Installation, commissioning and acceptance points during clean room construction

2019-05-14 14:50:00   Editor: Yan Hong shares    0

The main points of installation, commissioning and acceptance during the construction of the clean room project are that the entire process of clean room construction is very important. Yuhong shares scientific planning for these points in the clean room construction process, strictly grasping and carefully debugging, and it is necessary to rigorously sew from all aspects to deliver a strict standard clean room for customers. basic requirements


1. The construction enterprise undertaking the clean plant project shall have the corresponding engineering construction qualification and its grade, and shall have a sound quality management system.


2. The construction of the clean factory should be carried out according to the design documents and the contents of the contract. When the design is revised, it should be confirmed by the original design unit, visa, and approved by the construction unit.


3. Before the construction of the clean workshop, the construction plan and procedures should be formulated according to the characteristics of the specific project, so that the coordinated construction, clear stages and clear handover of each type of work ensure the overall construction quality and safe operation.


4. When the construction enterprise undertakes the detailed construction design of the professional design drawings in the clean plant project, it shall implement the relevant provisions of the current national standard “Code for Design of Clean Plants” GB50073, and strengthen the design quality management with quality management system. The construction details shall be approved or confirmed by the original design unit and approved by the construction unit before construction.


5. Concealed works of various professions in clean plant engineering must be checked and approved by the construction unit or supervisor before they are concealed.


6. The system commissioning of the completion and acceptance of the clean plant project shall be carried out with the participation of the construction unit and the supervision unit. The construction enterprise shall be responsible for the system commissioning and testing. The unit undertaking the commissioning shall have the technicians for debugging and testing and comply with this code. Specified test instrument.


Second, document management


(1) General provisions


1. The whole process of construction and installation, the details of the completed facilities, and all operation and maintenance procedures shall be confirmed by document.


2. The document management system should be an important part of the quality assurance system, provide a textual basis for the operation of the construction and installation, provide a clear basis for responsibility and rewards and punishments, and provide the original basis for quality improvement.


(2) Document type


1. Construction and installation documents are divided into three categories: system, standard and record.


2. Institutional documents include enterprise management, construction management, quality management, construction auxiliary materials acceptance, distribution management system, quality inspection system, safety and health management system, and personnel training system.


3. Standard documents include technical standards and working standards. Technical standards such as construction quality standards, construction process regulations, etc., work standards such as various positions, job operation methods or various standard operating procedures.


4. Record files include various records, vouchers and various reports.


(3) Opening and completion documents


1. The construction report shall have a start-up report, an intermediate acceptance form, a completion acceptance test adjustment record, a completion acceptance form, and a completion report.


2. In the construction and installation project, there should be equipment unpacking inspection records, civil concealed engineering records, pipeline concealed engineering system closed records, pipeline pressure test records, pipeline system cleaning (degreasing) records, air duct cleaning records, air duct leakage inspection records, Equipment single machine test operation record, system joint test operation record, etc.


(4) Technical specification


1. After the completion of the project, the construction party shall provide the construction instructions for the detailed conditions of the project, including: engineering and its functional functions, performance, final acceptance drawings, equipment list and inventory spare parts.


2. All types of facilities or systems shall be accompanied by a clear set of instructions for use, including: inspection and inspection plans to be completed before the facility is started, procedures for starting and stopping the facilities in normal and fault modes, and procedures to be used for alarms.


3. All kinds of facilities or systems should have performance monitoring instructions, including: test frequency, test methods, and measures when the test results do not meet the requirements.


4. All types of facilities or systems should have maintenance instructions, including: determination of safety procedures prior to maintenance or repair, technical requirements for maintenance actions to be taken when performance parameters are out of range, inspection and calibration of control safety and monitoring devices At the time of inspection, the requirements for inspection and replacement of various consumables are required, and the technical requirements for cleaning by the implementers in the maintenance work are required.


(5) Requirements for the formulation of documents


1. The identification of the document should clearly demonstrate the nature of the document.


2. All types of documents should have a system code and category that facilitates the description of their texts and atlases.


3. The filling of the document data should be true and clear, and should not be arbitrarily altered. If it needs to be modified, it must be signed at the nuclear reform office and the original data should be identifiable.


4. Do not use pencils to fill in the documents. The contents of the documents should be filled in. No spaces should be left. If there is no content, it should be indicated by “-” when filling in. The same content should be filled in repeatedly.


5. The document should be signed by the responsible person.


(6) Custody of documents


1. All kinds of records should be kept for three years after the completion of the project, and should not be destroyed in advance.


2. The copy of the document should be identical to the original.


3. The page numbers of all documents must be correct, consistent, and not torn at will.


4. The custody and filing of documents shall comply with the relevant provisions of the State, localities and industries.


Third, the construction organization


(1) General provisions


1. Units that undertake clean room and related controlled environment (hereinafter referred to as clean room) shall establish a quality management system in accordance with the relevant provisions of this code.


2. The construction unit shall prepare the construction organization design, and shall formulate the construction procedures of the specific project according to the contents of Appendix A of this code, and implement quality control according to the procedures throughout the construction process.


3. During the construction process, it is strictly forbidden to change the system, parameters, equipment selection, supporting facilities and main use functions without violating the design documents. It is strictly forbidden to not enforce the provisions of the mandatory provisions of this code. When the design is modified, it shall be confirmed and signed by the original design unit and approved by the construction unit, and shall be executed after notifying the supervisor.


(2) Construction deployment


1. The construction organization design should specify the location of the project, the project overview of the overall project, and the project profile of the purification project.


2. The construction organization design should clearly define the quality objectives, construction goals, safety objectives, environmental protection and energy conservation goals of the purification project.


3. The construction project department should have a project team headed by the project manager. The project is the project manager's total responsibility system. Personnel at all levels should have job responsibilities and division of labor.


4. The project team shall be equipped with the corresponding construction personnel according to the human resource plan required in the construction organization design, and the special work type must be certified.


5. Implement the quality responsibility system and implement the principle of “who is responsible for quality responsibility and who is responsible for quality responsibility”.


6. Prepare for intermediate acceptance and commissioning, trial operation, equipment, instruments, etc.


(3) Construction measures


1. The following quality assurance measures should be taken during the construction process.


(1) Establish a second-level quality assurance system for the company and project manager department, establish a project quality responsibility system for the first responsible person, and establish a quality management network in collaboration with relevant departments.


(2) Construction in strict accordance with the construction drawings and relevant specifications. It is strictly forbidden to arbitrarily change the drawings in violation of the design documents; it is strictly forbidden to dismantle water, heating, electricity, gas, communication and other supporting facilities without design confirmation and approval by relevant departments.


(3) Implement the listing system for construction workers and strictly enforce self-discipline.


(4) For the incoming materials, the spot check shall be carried out according to the regulations, and the test shall be carried out after passing the test.


(5) Work instructions should be prepared for key technologies, key processes, and special difficulties.


(6) It is advisable to carry out model construction for key parts and to be constructed on a large scale after approval by the owner and supervision engineer.


(7) Installation and commissioning of pipelines, equipment, etc. shall be completed before the construction of the building decoration and decoration project. When it is not possible to advance, it shall be completed before the construction of the finish.


(8) Construction inspection records and construction acceptance records and other records that should be reported should be completed in time to ensure that the documents are in sync with the project.


(9) For special production processes, special process regulations must be established, and construction personnel should be proficient in the special procedures.


(10) Construction procedures that require environmental requirements should be completed only after environmental requirements are met.


2, finished product protection measures


(1) Unify the whole product protection and warning signs.


(2) Equipment materials should be protected against rain, snow and sun, to avoid aging and corrosion of equipment materials.


(3) For important equipment and equipment such as air filters, special areas should be set up for storage.


3. Construction measures for special meteorological conditions


(1). When the ambient temperature below zero is likely to occur, there should be insulation and antifreeze measures for the construction water pipeline.


(2) Temporary heating equipment is provided to ensure the environmental temperature requirements for winter construction.


(3) When the ambient temperature is below zero, the hydrostatic test should not be carried out. When testing the water pressure at other times, it should be tested at any time and vented at any time.


(4) Rain protection measures should be taken in the construction area.


(5) During the dust storm, all the openings leading to the outside of the enclosed construction area shall be closed, covering all open-air storage equipment and materials, and the operation and commissioning of the system shall be stopped.


4, security assurance measures


(1) Emergency plan for safety assurance should be established, and safety policy should be formulated: prevention-oriented, self-help, unified command, division of labor, priority protection of people and priority protection of most people, priority protection of valuable property and other principles and guidelines.


(2) All construction personnel should have safety training.


(3) Defining the fire floor plan of the construction, drawing the location of the fire hydrant and fire extinguisher, the location of flammable and explosive, the emergency passage of fire, and the evacuation route.


(4) Signs and isolation facilities are required for entrances and exits where there is danger of crossing up and down.


(5) Do a good job in writing the safety and technical work, and carefully record and strengthen the awareness of prevention.


(6) Electrical safety regulations should be established.


(7) To strengthen the fire prevention work at the construction site, it is necessary to strictly implement the fire safety regulations, and the construction team enters the site to establish a fire prevention organization, and the responsibility is to the people.


(8) Eliminate the use of non-productive open flames on site. If the open fire is used due to production needs, the fire control should be used to cause sparks. After the end of the fire, there should be inspection measures.


(9) The construction unit shall refine and abide by the laws and regulations concerning construction safety, labor protection, fire prevention and anti-virus, and equip with necessary equipment, utensils and signs, especially the signs of smoking bans and fire bans.


5. Environmental protection and energy conservation


(1) During the transportation, storage and construction of construction materials, measures such as wrapping, covering, sealing and enclosure shall be taken to prevent pollution of the environment.


(2) Special waste storage sites should be set up at the construction site. The wastes should be stored and reused separately. Wastes that may cause secondary pollution must be stored separately, set up with safety precautions and have eye-catching signs.


(3) Reasonably coordinate the construction time of the construction sub-item according to the different requirements of the environmental noise standard day and night.


(4) There should be special management measures for products that affect environmental protection such as paints, blends, and adhesives.


(5) During the construction process, the site should be cleaned on the day of construction on the same day, and there is a system in charge of special personnel.


(6) Environmental assessment can be carried out as needed after the completion of construction.


(7) The construction organization design shall include the construction energy conservation content, prepare the construction energy conservation plan, and be reviewed and approved by the supervision (construction) unit, and provide technical training and necessary practical operation training for professionals engaged in construction energy conservation operations.


(8) Take measures to save electricity and water, and install metering devices for construction electricity and water.


Fourth, the construction procedures


(1) The construction and installation contents of the clean factory mainly include: architectural decoration, purification air conditioning system, various power public and safety facilities, and various piping and wiring; the construction and installation of the clean factory should be based on the specific engineering characteristics, and the functions should be arranged. Installation of relevant production process equipment and installation of secondary piping wiring.


(2) In the construction and installation procedures of the clean factory, according to the specific project conditions, complexity and other factors, if necessary, the secondary clean room decoration design or secondary piping design should be carried out.


(3) The construction and installation of the clean factory requires close cooperation with various professions and multiple types of work. According to the actual conditions of the project, the construction and installation procedures and planning progress shall be formulated, and the construction and construction of the clean plant shall be completed gradually and cyclically.


Five, building decoration


(1) General provisions


1. The clean room decoration and decoration project should include the main contents when designing the construction details:


(1) Technical requirements for interior decoration;


(2) The ceiling and wall are selected by the modulus of the metal wall panel;


(3) Comprehensive layout and airtight node diagrams of ceilings, partitions, doors and windows, return air outlets, lamps, alarms, equipment holes, pipelines, special caves, etc.


(4) Door and window structure and node diagram, metal wall installation node diagram.


2. The selection of materials for the decoration and decoration of clean workshops shall comply with the following provisions:


(1) The construction drawing design requirements of the project should be met;


(2) It should meet the requirements of fire prevention, heat preservation, heat insulation, anti-static, vibration isolation and noise reduction;


(3) The airtightness of the clean room should be ensured, and the surface of the material should not produce dust, adsorb particles or accumulate dust;


(4) Materials that are not mildewed, waterproof, washable, easy to clean and non-volatile molecular contaminants should be used;


(5) The special requirements of product quality and production process shall be met, and substances harmful to personnel health and product quality shall not be released.


3. The construction of the clean room decoration project shall be carried out after the main structure of the plant and the roofing project have been completed and accepted. When cleaning and decorating existing buildings, the site environment and existing facilities should be cleaned and cleaned to meet the requirements of clean construction.


4. The construction process of the clean room decoration project should be closed to the construction site, including the entry and exit personnel, equipment and materials for clean control.


5. The ambient temperature during the construction of the clean room decoration project should not be lower than 5 °C. When construction is carried out at low temperature, insulation measures shall be taken for construction operations with temperature requirements and influences.


6. During the construction process of decoration and decoration works, the construction site should be kept clean. For concealed space, cleaning and cleaning records should be made.


7. The construction process of the clean plant decoration project shall protect the surface of the completed decoration and decoration project, and shall not cause surface depression, damage and surface decoration pollution due to impact, tapping or the like.


(2) Wall, column and ceiling painting works


1. This section is applicable to the construction acceptance of coating works for water-based, solvent-based and dust-proof and mildew-proof coatings.


2. Confirmation of the status of the grassroots level shall meet the following requirements;


(1) Basic maintenance should meet design requirements;


(2) The surface flatness, verticality and yin and yang angles of the base layer;


(3) The substrate should be firm and firm, and no honeycomb, pockmark, hollow, powdered, cracked, etc.;


(4) The new building shall be cleaned of the building residue on the surface of the building and sanded with sandpaper; the old wall shall be cleaned and cleaned before application, and then filled with the interface agent;


(5) When applied on concrete or plaster base, moisture content requirements: solvent-based coatings should be greater than 8%; waterborne coatings should be greater than 10%;


(6) The plastering base should be applied evenly and firmly, without leakage, peeling, foaming, falling and cracking.


2. The painting project should meet the following requirements:


(1) The color of the paint should meet the design requirements;


(2) The construction of water-based paint finishing works should not be carried out on rainy days, and the ambient temperature should be controlled at 10~35 °C;


(3) Confirm that the base layer has been hardened, dried, and in accordance with the provisions of 4.2.5 of this specification before painting;


(4) The coating layer should be evenly coated and firmly bonded, and must not be leaked, penetrated, peeled, foamed, dropped and cracked.


(3) Floor coating works


1. Confirmation of the status of the grassroots should meet the following requirements:


(2) The residues of cement, oil and other residues on the base layer are cleaned up;


(3) When the base layer is the lowest floor of the building, a waterproof layer must be made;


(4) The dust, oil, residue, etc. on the surface of the base layer should be cleaned; sanding and repairing and leveling with a sander and wire brush, and cleaning the dust with a vacuum cleaner;


(5) When the old floor is painted, resin and PVC floor, the surface of the base should be polished and repaired with putty or cement.


(6) When the surface of the substrate is concrete, its surface should be hard and dry, and there should be no honeycomb surface, powdering, peeling, cracking, shelling, etc.; and it should be smooth and smooth;


(7) When the base layer is tile, terrazzo, steel plate, the height difference of adjacent plates should not exceed 1.0mm. The plate shall not have looseness or cracks.


2. The surface coating should meet the following requirements


(1) The thickness and performance of the coating should meet the design requirements. The thickness deviation shall not exceed 0.2mm;


(2) The surface coating must be carried out after the bonding layer has been dried;


(3) The surface temperature of the surface layer construction should be controlled at 5 ~ 35 ° C;


(4) Each ingredient must be used up within the specified time and recorded;


(5) Surface construction should be completed at one time. When the construction is carried out in stages, the joints should be made less and placed in a concealed place. The seams should be smooth and smooth, without scoring and revealing the bottom;


(6) The surface shall be free from cracks, bubbling, delamination, pitting, etc.;


(7) The volumetric electric and surface resistance of the anti-static floor should meet the design requirements.


3, the floor coating materials should be mildewproof, waterproof, easy to clean, wear-resistant, less dust, no dust and no harm to product quality.


(iv) Raised floor


1. The raised floor and its supporting structure should meet the design and load-bearing requirements. The factory certificate and review load inspection report shall be inspected before installation, and each specification shall have a corresponding inspection report.


2. The construction floor of the raised floor should meet the following requirements:


(1) The ground elevation shall comply with the design requirements;


(2) The surface layer of the ground shall be smooth, smooth and dust-free, the moisture content shall not exceed 8%, and the paint shall be painted according to the design requirements;


3. The surface layer and support parts of the raised floor should be flat and solid, and have the characteristics of wear resistance, mildew resistance, moisture resistance, flame retardant or non-combustible, pollution resistance, aging resistance, static electricity resistance, acid and alkali resistance.


4. For the raised floor with anti-static requirements, check the product certificate, certificate and anti-static performance test report before installation.


5. For raised floor with ventilation requirements, the opening ratio and opening distribution, aperture or side length on the surface layer should meet the design requirements.


6. The connection or bonding of the raised floor support poles to the building floor should be firm and reliable. The connecting metal members supporting the lower part of the pole shall meet the design requirements, and the exposed thread of the fixing bolt shall not be less than 3 buckles.


7. The allowable deviation of the laying of the raised floor surface layer shall comply with the following table.


8. The raised floor should be laid out carefully before the construction of the raised floor, correctly select the elevation reference point and mark the installation position and height of the floorboard.


9. After the installation of the raised floor, there should be no swing, no sound, and good firmness.


10. The installation of the raised and raised corners of the raised floor should be inlaid after cutting according to the actual situation, with adjustable support and cross bar, and the soft and non-dusting material should be used for jointing between the cutting edge and the wall.


(5), ceiling project


1. Before the construction of the ceiling project, the following concealed works should be accepted and handed over.


(1) Installation of various pipelines, functional facilities and equipment in the ceiling;


(2) Installation of keel, boom and embedded parts, including fireproof, anti-corrosion, mildewproof and dustproof;


(3) Other concealed works related to the suspended ceiling.


2. Before installing the keel, the procedures for the handover of the room height, the height of the hole and the elevation of the pipes, equipment and other supports in the ceiling shall be handled according to the design requirements.


3. The embedded parts, steel bars and steel hangers in the ceiling project shall be rust-proof or anti-corrosive; when the upper part of the ceiling is used as a static pressure box, the joint between the embedded parts and the floor or wall shall be sealed. deal with. The hanger should be dust-proof.


4. When accepting the ceiling project, the following documents and records should be checked:


(1) Details of construction, design and construction of ceiling construction and related product certification, performance test report and entry acceptance record;


(2) Concealed project acceptance records;


(3) Construction records.


5. The fixing and hanging parts of the ceiling should be connected with the main structure. Do not connect with equipment brackets and pipeline brackets; ceiling hangers shall not be used as support hangers for pipeline supports or equipment.


6. Air filters, lamps, smoke detectors, loudspeakers and various types of pipelines should be flat, tight and clean around the openings at the ceiling, and sealed with non-combustible materials. Seals should be sealed around the inspection port of the concealed project.


7. The elevation, size, arching and gap between the ceilings shall meet the design requirements. The gap between the plates should be consistent, the gap error between each plate should not exceed 0.5mm; and the sealant should be evenly sealed to make it smooth, smooth, slightly lower than the plate surface, and there should be no discontinuities and impurities.


8. The material, variety and specifications of the ceiling finish should meet the design requirements and check the performance of the product.


9. The distance between the booms should be less than 1.5m. The distance between the boom and the end of the main keel shall not exceed 300 mm.


10. The installation of the boom, keel and veneer must be safe and secure.


11. The materials, specifications and connection methods of the boom and keel should meet the design requirements. Metal hangers and keels should be surface treated.


12, the surface of the ceiling finish should be clean, smooth, consistent color, no warpage, cracks and defects; no mildew, no dust.


13. The joints of metal hangers and keels should be uniform and uniform, the corner joints should be consistent, the surface should be flat, and there should be no warping or hammering.


14. Permissible deviation and inspection method for ceiling installation.




(6) Wall engineering


1. Before the construction of the wall project, the following acceptance and handover should be carried out:


(1) Installation of pipelines and facilities related to wall engineering;


(2) Fireproof, anticorrosive, dustproof and mildewproof treatment of keel and embedded parts.


2. When checking the wall project, the following documents and records should be checked;


(1) Construction details, design and construction instructions of wall engineering and related product certification, performance inspection report and entry acceptance record;


(2) Concealed project acceptance records;


(3) Construction records.


3. Before installing the metal siding, carefully put the line according to the construction drawing. The corners of the walls shall be handed over vertically to prevent the wall panels from being twisted and twisted, and the vertical deviation of the panels shall not exceed 0.15%.


4. The joint gap of the wall panel should be consistent. The gap error of each panel joint should not exceed 0.5mm, and the sealant should be evenly sealed on the positive pressure surface. The sealant should be smooth and smooth, slightly lower than the board surface, and must not be interrupted. Impurities.


5. The electrical junction box on the wall panel, the control panel and the various openings at the crossing of the pipeline should be in the correct position, the edges are neat, tight, clean, and dust-free, and should be sealed with non-combustible or flammable materials.


6. The reserved openings for installing doors and windows should meet the design requirements, and should be smooth, tight, clean, and dust-free.


7. The partition plate installation should be firm. The position, quantity, specifications, connection method and anti-static method of the embedded parts and connectors should meet the design requirements.


8. Wall panel installation should be vertical, flat and correct. At the intersection with the ceiling panel and the relevant wall panel, anti-cracking measures should be taken; the joints should be sealed. Rounded corners should be used at the corners.


9. The surface of the wall should be smooth, smooth and consistent in color. The mask of the metal wall should be intact (before tearing).


10. Allowable deviation and inspection method for wall plate installation


(7) Door and window installation works


1. When checking the door and window project, the following documents should be checked:


(1) Construction drawings, design or construction instructions and other related documents for doors and windows;


(2) Product quality certification of doors and windows and (including main production materials) certificate of conformity, performance inspection report, entry acceptance record;


(3) Concealed engineering acceptance records for fixed and connected parts of doors and windows;


(4) Door and window airtightness test report (air cleanliness level 1 to 5 clean room).


2, the surface of the door and window should be no dust, no mildew, no adsorption of pollutants, easy to clean and disinfect, smooth, smooth, the glass on the doors and windows should be fixed.


3. The installation of the door and window frame and the sub-frame must be firm. The number, specifications, location, burying or connection of the embedded parts and connectors should meet the design requirements.


4. The door and window frame and the wall should be firmly connected. The gap between the door and window frame, the sub-frame and the wall should be even and should not exceed 1mm. The gap should be filled with a sealing material and sealed with a sealant.


5. The model, specification and quantity of clean room door fittings should meet the design requirements, and should be firm, smooth, dust-free, easy to clean and disinfect.


6, the surface of the door and window should be consistent in color, no rust, no scratches and bumps. The protective layer or film should be continuous.


7. The door leaf should be installed firmly, and the switch is flexible and closed tightly.


Allowable deviation and inspection method for window installation


Sixth, purification air conditioning system


(1) General provisions


1. The materials, accessories and equipment used in the construction of the purified air-conditioning system shall comply with the requirements of the engineering design drawings, and shall not produce or distribute substances that are harmful to the normal production of the products, the quality of the products and the health of the personnel.


2. The materials, accessories and equipment used in the construction shall have the product ex-factory certificate, etc., and should be accepted before entering the construction site, and the product acceptance record shall be made.


3. Concealed projects in the construction of air-conditioning systems can be concealed after the experience is collected and recorded.


4. The commissioning and commissioning of the air-conditioning system shall be carried out after the completion of the acceptance of the decoration and decoration of the clean room (area) and the various pipelines for purging and pressure testing.


(2) Ducts and components


1. The material of the air duct of the air-conditioning system should be selected according to the requirements of the engineering design documents. When the engineering design is not required, galvanized steel should be used. When the production process requirements or environmental conditions must use non-metallic ducts, non-combustible materials or B1 flame retardant materials should be used, and the surface should be smooth, flat, dust-free and mildew-free.


2. The air duct production of the air conditioning system should meet the following requirements:


(1) When the side length of the rectangular duct is less than or equal to 900mm, the bottom panel shall not be spliced; the rectangular duct of more than 900mm shall not be used for horizontal splicing;


(2) Bolts, nuts, washers and rivets used in ducts shall be of a material that is compatible with the performance of the pipe and does not produce electrochemical corrosion. No blind rivets shall be used;


(3) The inner surface of the air duct is flat and smooth, and no reinforcement frame or reinforcement ribs shall be provided in the air duct;


(4) S-type inserts, right-angle inserts and joint angle inserts shall not be used when the duct cannot be connected in blue;


(5) Air ducts with a cleanliness class of 1 to 5 shall not be snap-on;


(6) The galvanized steel duct shall not be seriously damaged by the galvanized layer, such as large-area white flowers on the surface layer, powder coating on the surface, etc.;


(7) The spacing between the bolts and rivet holes of the duct flange shall not exceed 80 mm when the air cleanliness level is 1 to 5; when it is 6 to 9, it shall not exceed 100 mm;


(8) When the side length of the rectangular duct is greater than 1000mm, the flangeless tube connected with the flange clamp shall not be used.


3. The production, cleaning and storage of air ducts shall meet the following requirements:


(1) When the air duct is produced on site, it shall choose a place with anti-canopy and fence, and keep the site clean;


(2) Anti-corrosion treatment should be carried out when there is damage at the bite seam, hemming and riveting of the air duct.


(3) After the air duct is manufactured, it should be carefully cleaned. The cleaning solution should be able to effectively remove dirt, oil stains, etc., and must not be harmful to human health and materials;


(4) After the air duct is cleaned by clean water for cleaning requirements, the end of the air duct should be sealed in time and stored in a clean room, and dust, moisture and deformation should be avoided.


4. After the air duct is cleaned, the air duct production quality inspection should be carried out by the light leakage method. The following requirements should be met:


(1) It should be carried out at night;


(2) The tools and tools used for testing shall be well insulated and provided with leakage protection; the outer surface shall be clean, free of oil, dust, and damage;


5. The production of static pressure box should meet the following requirements:


(1) The frame and fixing parts of the static pressure box body and the high-efficiency filter in the box shall be galvanized or nickel-plated or painted or painted;


(2) The outer casing should be firm and airtight, and its strength and air leakage should comply with the regulations.


6. All kinds of dampers for purifying air-conditioning systems shall be galvanized or other anti-corrosion treatment for moving parts, fixing parts and fasteners; reliable sealing measures shall be taken at the gap between the valve body and the outside.


7. The production of metal ducts should meet the following requirements:


(1) The requirements for the quality of the duct production, the allowable deviation, the quality of the weld and the flange connection or the failure of the flange connection shall comply with the relevant provisions of the current national standard "Code for the acceptance of construction quality of ventilation and air-conditioning engineering" GB50243;


(2) There must be no cracks or holes in the bite seam and flange flange of the air duct. If there are tiny cracks or holes, the sealant should be applied on the positive pressure side of the sealing surface;


(3) The joint between the air duct and the attachment should be tight. If there is a gap, sealant should be applied on the positive pressure side of the sealing surface;


(4) If there is any damage to the coating during the processing of the galvanized steel pipe, or if pinholes, pitting, peeling and other defects are found, more than 2 layers of anti-rust coating should be applied.


8. When the length of the rectangular duct is greater than or equal to 800mm or the length of the pipe is greater than or equal to 1250mm, the air duct reinforcement measures shall be taken. 9. The air-conditioning system shall be provided with test holes and necessary cleaning inspection doors. The inner surface of the inspection door should be smooth and smooth, flexible to open and close, tightly closed, and sealing measures should be taken at the joint with the air duct. The sealing material should be made of molded sealing tape or soft rubber strip.


10. The flexible short pipe should meet the following requirements:


(1) It should be made of flexible materials that are not dust-producing, mildew-resistant, smooth on the inner surface, airtight, moisture-proof, and anti-corrosive;


(2) The length of the flexible short tube should not exceed 250mm, and the joint should be firm and airtight;


(3) The flexible short pipe shall not be used as a straight-shaped connecting pipe section for the alignment and leveling of the air duct.


(3) Air duct system installation


1. The installation of the air duct of the purified air-conditioning system shall be carried out under the condition that the ground of the installation part has been completed and the indoors are provided with dust-proof measures.


2. After the installation of the air duct system, the rigorous test of the system should be carried out, and the process of air duct insulation can be carried out after the experience is passed.


3. The hoist and bracket of the air duct system should be firmly connected with the building envelope structure. When using expansion bolts, it should comply with the provisions of the corresponding technical documents. Supports and hangers should be treated with anti-corrosion treatment.


4. The installation of the air duct and its accessories for purifying the air conditioning system shall comply with the following requirements:


(1) It must be wiped clean before installation, so that it is free of oil and dust;


(2) When the suspension occurs during construction or the construction is completed, the air duct port should be blocked;


(3) Flange gaskets should be made of materials that are not dust-producing, aging-resistant, airtight and have certain elasticity; the thickness of the gasket should be 5-8 mm;


(4) Flange gaskets shall not be straight seamed. It is forbidden to apply paint on the gasket, and sealant can be used at the joint;


(5) When the air duct passes through the enclosure of the clean room (zone) ceiling, partition wall, etc., reliable sealing measures shall be taken;


(6) Other pipelines are strictly prohibited from passing through the air duct.


5. Installation of the air outlet in the clean room (area) shall meet the following requirements:


(1) Wipe clean before installation, no oil, dust, etc.;


(2) The connection to the duct shall be firm and tight;


(3) It should be in close contact with the ceiling/wall decoration surface, and the surface should be smooth, and the joints should adopt reliable sealing measures;


(4) The installation position of the tuyere of the same clean room (area) should be arranged in coordination with the lighting fixtures and other facilities, so that the arrangement is neat and beautiful;


(5) The air supply port with high efficiency air filter should be reliable and fixed.


6. The tightness test after installation of the air duct shall comply with the engineering design requirements or the following provisions:


(1) The rigorous test shall be carried out separately according to the system, and the air leakage shall comply with the provisions of the current national standard “Code for the Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering” GB 50243;


(2) Purification test of air duct of air conditioning system, high pressure system (system with air cleanliness level 1~5) is tested according to high pressure system, working pressure is lower than 1500Pa air duct system (6~9 level system) Tested by medium voltage system.


7. The installation of air duct components and valves shall comply with the relevant provisions of the current national standard "Code for the Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering" GB 50243.


8. The air ducts of the air-conditioning system are required to be insulated and insulated, and the following provisions shall be met:


(1) Insulation or heat insulation of air ducts and their components shall be made of non-combustible or flame retardant materials. The materials, density, specifications and thickness shall comply with the requirements of the engineering design documents;


(2) Materials that are prone to dust and mildew shall not be used in clean rooms (areas);


(3) The construction and acceptance of insulation and insulation shall comply with the relevant provisions of the current national standard “Code for the Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering” GB 50243.


9. When the air-conditioning system is cleaned and sealed, the air duct and accessories are installed. After opening the port seal film, it should be connected immediately; when it is necessary to temporarily stop the installation, the port should be resealed.


10. The outer surface of the air duct insulation layer should be smooth, sealed and free of slack. If the air duct in the clean room (area) has insulation requirements, the outer surface of the insulation layer is smooth, does not accumulate dust, does not absorb dust, and is easy to wipe. The joint should be sealed with sealant.


11. The flexible short pipe shall not be used as the alignment and leveling pipe of the air duct.


(4) Cleaning air conditioning equipment installation


1. Purification of air-conditioning equipment should have complete random documents, including packing list, instructions, product quality certificate, performance test report and necessary drawings, etc. Imported equipment should also have commodity inspection documents.


2. Before the installation of the equipment, the unpacking inspection should be carried out with the participation of the construction unit and the relevant parties, and the unpacking or acceptance records should be made.


3. The handling and location of the equipment shall meet the following requirements:


(1) The handling and hoisting of equipment shall comply with the relevant requirements of the product manual, and shall carry out relevant protection work to prevent equipment damage;


(2) Before the equipment is in place, the installation site and equipment foundation shall be checked and accepted;


(3) The equipment is in place and installed, and it should meet the requirements of the product specification and relevant standards.


4. Before installing the high efficiency air filter, the following conditions should be met:


(1) The construction and decoration of the clean room (area) and the construction of the piping project have been completed and passed the acceptance;


(2) The clean room (zone) has been thoroughly cleaned and cleaned, and the air-conditioning system has been cleaned and continuously tested for more than 12 hours;


(3) The installation site and related parts of the high-efficiency filter have been cleaned and cleaned;


(4) The high-efficiency filter has been visually inspected, and the frame, filter paper, sealant, etc. are free from deformation and breakage - damage such as breakage or shedding.


5. The installation of high efficiency air filter should meet the following requirements:


(1) After passing the visual inspection, it shall be installed immediately;


(2) The frame for installing the high-efficiency filter should be flat and clean, and the flatness deviation of the mounting frame of each filter should not exceed 1mm;


(3) The installation direction of the filter must be correct. The perimeter of the filter and the interface after installation should be tight and not leaking;


(4) When using mechanical seal, it should be sealed with airtight gasket, its thickness is 6~8mm, and it should be closely attached to the filter frame; after installation, the compression of the litter should be uniform, the compression ratio is 25%~50%;


(5) When the liquid tank is sealed, the installation level of the trough shall be free from leakage; there is no dirt or moisture in the trough. The height of the sealing liquid in the tank should be 2/3 of the groove depth, and the melting point of the sealing liquid should be higher than 50 °C.


6. Installation of the fan filter unit (FFU) shall comply with the following regulations:


(1) The conditions before installation shall meet the requirements before installation of high efficiency air filter;


(2) The appearance inspection shall be carried out in a clean environment, and there shall be no deformation, rust, peeling of the paint film, or damage to the splice plate;


(3) The installation frame should be smooth and smooth;


(4) The installation direction must be correct, and the FFU unit after installation should be convenient for maintenance;


(5) There should be reliable sealing measures at the joints with the frame;


7. The installation of the clean laminar flow hood shall comply with the following provisions:


(1) Before installation, visual inspection shall be carried out without deformation, falling off or breakage;


(2) Installation shall be carried out with independent columns or booms, and shall be provided with anti-swaying fixing measures and shall not be supported by relevant equipment or siding;


(3) Laminar flow hood directly installed on the ceiling, and sealing and vibration isolation measures shall be provided between the surrounding of the box and the ceiling plate;


(4) The installation of the vertical unidirectional flow layer flow hood shall not exceed 0.1%; the horizontal unidirectional flow layer flow hood shall have a vertical deviation of ±1 mm; the height tolerance shall be ±1 mm;


(5) After installation, continuous test operation of not less than 1.0 h shall be carried out to check the operation equipment, components and electrical interlock functions.


8. Assembly and installation of the air conditioning unit for purifying the air conditioning system shall comply with the following requirements:


(1) Model, specification, direction, functional section and technical parameters shall comply with the design requirements;


(2) Sealing measures shall be taken between functional sections;


(3) The air-conditioning unit assembled on site shall be tested for air leakage after installation. The air leakage rate of the unit used in the air cleanliness class 1~5 clean room (zone) shall not exceed 0.6%, and the level 6~9 shall not exceed 1.0. %, the detection method of air leakage rate should comply with the current national standard "combined air conditioning unit" GB/T1429;


(4) The inner surface should be smooth and clean, and there should be no oil, debris or dust;


9. The installation of electric heaters in the air conditioning system shall comply with the following regulations:


(1) The outer surface should be smooth and free of dust, and should be made of stainless steel;


(2) Insulation insulation layer of 800mm before and after, non-combustible materials shall be used; ducted gaskets shall be connected to ducts and electric heaters, and heat-resistant and non-combustible materials shall be used;


(3) The metal casing shall be well grounded; the exposed terminal shall be provided with a safety shield.


10. The installation of the air shower room should meet the following requirements:


(1) According to the engineering design requirements, the measurement and positioning of the air shower room should be carried out correctly;


(2) Before installation, it should be visually inspected to confirm the external dimensions, structural components, no deformation, no abnormality or falling off of the nozzle;


(3) Check that the floor of the air shower room installation site is level and clean, and the relevant retaining structure retains holes to meet the installation requirements;


(4) A vibration isolation pad shall be provided between the air shower room and the ground, and sealing measures shall be taken between the air and the enclosure;


(5) The horizontal deviation of the air shower room shall not exceed 0.2%;


(6) Carry out continuous test operation of not less than 1.0h according to the relevant requirements of the product manual. Check each sports equipment, components and electrical interlocking performance.


11. The installation of mechanical residual pressure valve should meet the following requirements:


(1) According to the engineering design requirements, the measurement and positioning of the residual pressure valve are correctly carried out;


(2) Before installation, it shall be visually inspected to confirm that the structure should be able to operate correctly and sensitively;


(3) For the residual pressure valve installed in place, the horizontal deviation of the shaft of the valve body and the valve plate shall not exceed 0.1%;


(4) The installation of the residual pressure valve should be firm and the joints with the wall should be reliably sealed.


12. The installation of dry air coolers shall meet the following requirements:


(1) According to the engineering design requirements, the measurement and positioning of the dry surface cooler should be carried out correctly;


(2) The connection with the chilled water supply and return pipe should be correct and tightly sealed;


(3) The surface of the heat exchange surface should be clean, smooth and in good condition. A drainage device should be provided at the lower part, and the drainage of the condensed water discharged from the water seal is unblocked.


(5) System debugging


1. The commissioning of the purification air-conditioning system shall be undertaken by the construction unit and the construction unit shall participate. Commissioning includes stand-alone commissioning and system linkage commissioning and commissioning.


2. The performance and accuracy of the instrumentation used in system commissioning shall meet the test requirements and shall be within the effective use period of the calibration certificate.


3. Before the combined commissioning and commissioning of the air conditioning system, the following conditions should be met:


(1) Various equipments in the system have been tested in a single machine and passed the acceptance test;


(2) The relevant cold (heat) source system for cooling and heating needs to be commissioned, and has been commissioned for acceptance;


(3) The decoration and piping of the clean room (area) have been completed and passed the individual acceptance;


(4) Cleaning and wiping have been carried out in the clean room (area), and the entry of personnel and materials has been carried out according to the cleansing procedure;


(5) Purify the air-conditioning system for thorough cleaning, and carry out trial operation for more than 24 hours to achieve stable operation;


(6) The high efficiency air filter is installed and qualified for leak detection.


4. The stable linkage test run and commissioning time of the air conditioning system with cold (heat) source shall not be less than 8h.


5, clean air conditioning system with cold (heat) source linkage test run, should be carried out in an empty state or in accordance with the contract.


6. Purification of air-conditioning system The single-machine trial operation of various equipments shall comply with the current national standard "Code for the acceptance of construction quality of ventilation and air-conditioning engineering" GB 50243 and related product standards.


7. The commissioning results of the air volume and wind speed of the one-way flow clean room shall be in accordance with the relevant requirements of NEBB's Cleanroom Certification Test Procedure Standard and shall comply with the following provisions:


(1) The air supply test result should be within ±5% of the design air volume, and the relative standard deviation should be no more than 15%;


(2) The average wind speed of the section shall be within ± 5% of the design value, and the relative standard deviation (unevenness) of the wind speed of each section shall not exceed 15%.


8. The test results of the air supply volume of the non-unidirectional flow clean room shall refer to the relevant requirements of NEBB's “Cleanhouse Certification Test Procedure Standard”, which shall be within ±5% of the design air volume, and the air volume of each air outlet shall have a relative standard deviation (unevenness). Degree) not more than 15%.


9. The fresh air volume test result shall not be less than the design value and shall not exceed 10% of the design value.


10. The temperature and relative humidity measurement results in the clean room (area) shall meet the following requirements:


(1) The measured results of temperature and relative humidity in the clean room (area) shall meet the design requirements;


(2) According to the average value of the measured results of the specified test points, the deviation value shall be within 90% of the accuracy of the design requirements of the test points.


11. The static pressure difference test results of the clean room (area) and adjacent rooms and outdoors should meet the design requirements.


12. The airflow flow test in the clean room confirms the unidirectional flow, non-unidirectional flow, and mixed flow flow type, which meets the design and performance technical requirements.


13. Test the airflow direction in the clean room to confirm that the airflow direction and its uniformity meet the design and airflow pattern requirements.


14. The control system of the air-conditioning system and its implementation, detection, monitoring, adjustment of components and accessories are implemented, so that the action is accurate, the display is correct, the operation is stable, and the control accuracy meets the design requirements.


Seven, exhaust and exhaust treatment


(1) General provisions


1. The materials, accessories and equipment of the exhaust and exhaust system shall comply with the requirements of the engineering design drawings and shall comply with the relevant national standards, regulations and specifications for environmental protection and public health.


2. The materials, accessories and equipment used in the construction shall have the product ex-factory certificate, etc., and shall be accepted and accepted before entering the construction site, and have a quality acceptance record.


3. The concealed works in the construction of various exhaust and exhaust systems in the clean workshop can be concealed after the experience is collected and recorded.


4. All kinds of exhaust and exhaust systems should be painted according to the type of exhaust in the pipe, the type of medium and the concentration of the medium. The flammable and toxic exhaust should be specially marked. The piping should indicate the direction of flow.


5. The commissioning and commissioning of the exhaust and exhaust systems shall be carried out simultaneously with the purification and air-conditioning system in the clean plant, and shall be separately commissioned and commissioned according to each independent exhaust and exhaust system. Commissioning and commissioning should be carried out with the participation of the construction unit.


(2) Ducts and accessories


1. The materials of air ducts and accessories should be selected according to engineering design requirements.


2. When the exhaust pipe adopts metal pipe, the material type, specification, performance and thickness shall meet the requirements of the design drawing. When the design does not require, the thickness of the galvanized steel plate and stainless steel plate shall not be less than the following table.


3. When the non-metallic air duct is used for the exhaust duct, the material type, specification, performance and thickness of the duct shall comply with the requirements of the design drawings; when the design is not required, the thickness of the non-metal duct sheet shall comply with the current national standard "Ventilation and Air Conditioning Engineering". Construction quality acceptance specification "GB 50243".


4. The production of exhaust ducts in clean workshops shall comply with the following provisions:


(1) Non-combustible materials shall be used for the sealing material and fixing material of flammable and toxic exhaust ducts;


(2) Bolts, nuts, washers and rivets used in ducts shall be of a material that is compatible with the performance of the pipe and does not produce electrochemical corrosion;


(3) Galvanized steel sheets shall not be seriously damaged by galvanized layer, such as large-area white flowers on the surface layer, powdering of coatings, etc.;


(4) The spacing between the bolts and rivet holes of the duct flange shall not exceed 100 mm; the four corners of the rectangular duct flange shall be provided with screw holes.


5. After the inner and outer surfaces of the air duct are cleaned, the quality inspection of the air duct should be carried out by the light leakage method. Air duct leakage inspection should be carried out at night.


6. The strength test pressure of the exhaust duct should be 500Pa lower than the working pressure, but not lower than -1500Pa. There is no crack at the seam.


7. All kinds of dampers, exhaust hoods and other components of the exhaust system shall be inspected and accepted according to the engineering design or product qualification certificate, and shall meet the following requirements:


(1) The handwheel or wrench of the manual damper shall be turned clockwise to close, and the adjustment range and opening angle indication shall be consistent with the blade opening angle;


(2) The damper of the exhaust system used for discontinuous operation shall be closed when closed;


(3) The damper for shutting down the exhaust system, when closed, the leakage rate shall not exceed 3%;


(4) Electric and pneumatic dampers should be accurate and reliable.


8. The damper making materials of explosion-proof, flammable and toxic exhaust systems must meet the design requirements and should not be used on their own.


9, anti-smoke valve, flexible short tube should meet the following requirements:


(1) The smoke control valve (exhaust outlet) shall comply with the relevant fire protection product standards and have corresponding product certification documents;


(2) The material for the production of flexible short tubes for smoke control systems must be made of non-combustible materials.


10, the production quality, allowable deviation, weld or bite quality of the exhaust duct (including metal, non-metal), damper, hood, etc., duct flange connection or flange connection and duct reinforcement, etc. It shall comply with the relevant provisions of the current national standard "Code for the Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering" GB 50243.


(3) Exhaust system installation


1. The installation of the air duct main pipe and the branch pipe of the exhaust system should be carried out simultaneously with the purification air conditioning system; the branch pipe connected to the exhaust hood and the exhaust point should be installed after the completion of the enclosure of the clean room (area) Carry out and take perfect dustproof measures.


2. The branch (hanging) frame of the exhaust system should be treated with anti-corrosion treatment and should be firmly connected with the structure of the building.


3. After the installation of the exhaust system is completed, the system should be tested for tightness. The cleaning and external surface treatment of the pipe should be carried out after acceptance.


4. When the exhaust duct passes through the fireproof, explosion-proof wall, ceiling or floor, protective casing shall be provided, and the thickness of the casing steel plate shall not be less than 1.6mm. The protective casing shall be pre-buried and securely fixed; the gap between the air duct and the protective casing shall be sealed with non-combustible insulation material.


5. Installation of exhaust ducts shall comply with the following regulations:


(1) The exhaust air duct containing flammable or explosive medium or the air duct installed in an explosive atmosphere shall be provided with reliable grounding;


(2) When the exhaust duct passes through the wall, ceiling and ground of the clean room (zone), a casing shall be provided and shall be airtight;


(3) Other pipelines are strictly prohibited from passing through the exhaust duct;


(4) The outdoor exhaust pipe is fixed to the cable, and it is strictly forbidden to connect with the lightning rod or lightning protection net.


6. When the gas temperature in the exhaust duct is higher than 80 °C, protective measures should be taken according to the engineering design requirements.


7. The tightness test after installation of the air duct shall comply with the engineering design requirements. When there is no requirement, the following provisions shall be met:


(1) The rigorous test shall be carried out separately according to the system;


(2) The test pressure (P) of the exhaust duct system is 1500 Pa, which allows the air leakage to be equal to or less than 0.0117 P0.65 (m3/(h·m2)).


8. The installation of the exhaust duct, the connection of the duct and the installation of the branch (hanging) frame shall comply with the relevant provisions of the current national standard "Code for the Acceptance of Construction Quality of Ventilation and Air Conditioning Engineering" GB 50234.


9. The installation of the duct and valve of the dust removal system shall meet the design requirements. The air duct should be laid vertically or obliquely to avoid horizontal pipe laying; the valve on the suction pipe section of the dust removal device should be installed on the vertical pipe section.


10. The exhaust air duct containing condensed water or other liquid should be laid at a slope of more than 5%, and a draining device should be provided at the lowest point.


11. The exhaust pipe (hood) connected to the production process equipment shall be installed according to the design requirements, and the position shall be correct and fixed.


12. The exhaust air duct should be waterproofed through the roof or the external wall, and there should be no water seepage. The hood of the exhaust system should be installed securely.


(4) Installation of exhaust gas treatment equipment


1. The exhaust air treatment equipment shall have complete technical documents of the equipment body and purification (adsorption) materials and accessories, including product specifications, quality certificate, performance test report, packing list and necessary drawings, etc. There are commodity inspection documents, etc.


2. Before the installation of the equipment, the unpacking inspection should be carried out with the participation of the construction unit and the relevant parties, and the unpacking and acceptance records should be made. According to the function of the exhaust treatment equipment or the complexity of the treatment technology, the inspection and acceptance of the equipment before leaving the factory should be carried out when necessary. The specific inspection contents and requirements of the factory shall be specified in the contract.


3. The handling and lifting of equipment should meet the following requirements:


(1) The handling and lifting of equipment shall comply with the relevant requirements of the product specification, and shall carry out relevant protection work to prevent equipment damage or treatment performance degradation;


(2) Before handling and hoisting of large and medium-sized equipment, a safe and feasible handling and lifting plan shall be formulated according to the equipment dimensions, weight, product specification requirements and safety production requirements, and shall be implemented after approval by the construction unit and project supervision.


4. The equipment should be checked and accepted before the equipment is in place. The basic acceptance should check the consistency of the weight of the equipment (including the weight of the purification treatment material) and the carrying capacity.


5. The installation of adsorption-type exhaust gas treatment equipment should meet the following requirements:


(1) The foundation of the overall exhaust gas treatment equipment shall be directly placed, and the surface level shall not exceed 2‰;


(2) The verticality of the body of the adsorption device should not exceed 2‰;


(3) The center of the selected main port should be aligned with the installation reference line and the base surface, and the allowable deviation should not exceed 3 mm;


(4) Before loading the adsorbent, the inside of the equipment should be purged with clean air to remove debris, etc.;


(5) Before loading the adsorbent, check the effective activity of the adsorbent according to the provisions of the equipment technical documents;


(6) After filling and installation, the air tightness test shall be carried out according to the design requirements. The test pressure should be +500Pa and the dwell time should be 30min. There should be no leakage or abnormality after inspection.


6. Installation of wet exhaust gas treatment equipment should meet the following requirements:


(1) The foundation of the washing tower and liquid tank shall have a surface level of not more than 2‰;


(2) The plumbness of the washing tower and the liquid tank should not exceed 1‰;


(3) After the equipment and pipelines are assembled, water is injected to the working liquid level. The air tightness test should be carried out at a working pressure of +500 Pa gas pressure. The holding time is 30 min. After the inspection, there should be no leakage and abnormal phenomena; The working pressure is tested for the strength of the liquid pipeline. The holding time is 20 min. There should be no leakage or abnormality after inspection.


7. The installation of the precipitator should meet the following requirements:


(1) Model, performance parameters, direction of entry and exit should meet the design requirements;


(2) The surface level of the precipitator shall not exceed 2 ‰; the verticality of the precipitator casing shall not exceed 1 ‰;


(3) The dust collector installed on site shall be tested for air leakage, and the air leakage allowed at 1500 Pa is 3%;


(4) When the filter dust removal device is used, the installation and airtightness test shall be carried out according to the requirements of the product specification;


(5) The housing of the bag filter, electrostatic precipitator and its auxiliary equipment should be reliably grounded.


8. The installation of the rotary exhaust gas treatment equipment should meet the following requirements:


(1) Model, performance parameters, take-over position, etc. should meet the design requirements;


(2) The basis of the equipment, the surface level shall not be greater than 2‰; the verticality shall not be greater than 1‰;


(3) The housing of the equipment should be reliably grounded.


9. Installation of adsorption-type exhaust gas treatment equipment should also meet the following requirements:


(1) The method of loading the adsorbent includes the height of the adsorbent layer, the degree of compactness, etc., and should meet the design requirements;


(2) The support of the adsorbent layer is reliable and convenient for loading and unloading;


(3) The level of the surface of the adsorbent layer should not exceed 3‰, and the height difference of each adsorbent layer should not exceed 1‰;


10. The installation of the wet exhaust gas treatment device should also meet the following requirements:


(1) The installation position of the sprinkler is correct, the fixing is firm, the spraying is uniform and the spraying surface meets the design requirements;


(2) When the heat exchanger is installed in the equipment, the installation position is correct, the fixing is reliable, and the heat exchange surface is clean and intact;


(3) The equipment accessories (including liquid level gauge, pressure gauge, etc.), piping and valves are installed in the correct position, the action is flexible, and the meter indication is accurate;


(4) The model, specifications and performance parameters of the circulating pump should meet the design requirements.


(5) System debugging


1. The commissioning and commissioning of the exhaust and exhaust gas treatment system shall be undertaken by the construction unit, and the construction unit and the supervision unit shall participate in the commissioning, including the single-machine test of the equipment, the system joint commissioning and commissioning. The performance parameters and accuracy of the instrument and instrument for debugging shall meet the test requirements and shall be within the validity period of the calibration certificate.


2. Before the joint commissioning and commissioning of the exhaust system, the following conditions should be met:


(1) Various equipments in the system have been tested in a single machine and passed the acceptance test;


(2) The decoration and decoration of the clean room (area) and the distribution of various types of piping are completed and passed the single acceptance;


(3) Cleaning and wiping have been carried out in the clean room (area), and the entry and exit of personnel and materials has been carried out in accordance with the clean-up procedure.


3. The joint commissioning and commissioning of the exhaust system should reach the performance parameters of the engineering design (including air volume, wind pressure, etc.), and the stable continuous test run time should not be less than 4.0h.


4. Before commissioning the exhaust system, the construction party shall prepare a trial operation and commissioning plan, which shall be carried out after approval by the construction unit. Complete commissioning information and reports should be provided after commissioning.


5. The single-machine test operation and commissioning of the equipment shall meet the following requirements:


(1) The test operation requirements of the ventilator and the water pump shall be carried out in accordance with the current national standard "Code for the acceptance of construction quality of ventilation and air-conditioning engineering" GB 50243;


(2) The trial operation and commissioning of the exhaust gas treatment equipment shall be carried out according to the requirements of engineering design or equipment technical documents, and the stable continuous trial operation time shall not be less than 2.0h;


(3) All manual and electric damper operations should be flexible, reliable and accurate.


6. The joint commissioning and commissioning of the exhaust system shall meet the following requirements:


(1) The deviation between the total air volume commissioning result and the design air volume should not exceed ±10%;


(2) The deviation between the system wind pressure debugging result and the design value should not exceed ±10%;


7. The initial pressure drop and noise of the test and commissioning of the exhaust and exhaust gas treatment system shall not exceed the requirements of the engineering design and product specification.


8, the exhaust system linkage test run and commissioning, should also meet the following requirements:


(1) The operation of equipment, valves and main accessories during trial operation shall comply with the design requirements and be correct and without abnormal phenomena;


(2) The air volume of each exhaust system should be adjusted in balance, and the allowable deviation of the air volume of each tuyere or hood from the design air volume should not exceed 10%;


(3) The gas supply and supply and drainage systems related to the exhaust system are operating normally.


Eight, piping engineering


(1) General provisions


1. This chapter is applicable to the construction and installation quality inspection of carbon steel pipes, stainless steel pipes, engineering plastic pipes and other piping projects where the design pressure in the clean workshop is not more than 1 MPa and the design temperature does not exceed the allowable temperature of the material.


2. Pipe installation should have the following conditions:


(1) The civil works related to the piping project have passed the inspection and acceptance, meet the installation requirements, and have completed the handover procedures;


(2) Construction shall be carried out in accordance with the engineering design documents;


(3) The materials, accessories and equipment used in the piping project have been inspected and qualified, and there are corresponding product ex-factory certificates. Specifications, models and performance should meet the design requirements;


(4) The inside of pipes, fittings, valves, etc. have been cleaned up and free of debris. Pipes with special requirements on the inner surface of the pipe shall meet the requirements of the design documents and have been processed before installation and passed the inspection.


3. Before the valve is installed, the valves of the following pipelines shall be pressure tested and rigorously tested one by one. If they are not qualified, they shall not be used.


1 valves for conveying flammable fluids and toxic fluid pipelines;


2 valves for conveying high purity gas and high purity water pipes;


3 Valves for conveying special gas pipelines and chemical pipelines.


4. Before installing the valves of various types of fluid pipelines except the scope specified in Article 7.1.3, 20% of each batch shall be inspected, and not less than 2, for shell pressure test and tightness test. When it is unqualified, it should be doubled and checked. If it is still unqualified, the batch of valves should not be used.


5. When the pipeline passes through the clean room (zone) wall, ceiling, floor and special structure, it should meet the following requirements:


(1) Flexible connection should be adopted when the pipeline crosses the expansion joint, anti-seismic joint and settlement joint;


(2) Casing shall be provided when the pipeline passes through the wall, ceiling and floor. The gap between the casing and the pipeline shall be sealed with non-combustible materials that are not easy to produce dust;


(3) Pipe joints and welds shall not be placed in the casing.


6. The pipes, support and hanger materials installed in the clean room (area) should be made of materials that are not easy to rust and dust, and the outer surface should be smooth and easy to clean.


7. The valves, flanges, welds and various connecting parts on the piping should be easy to access and should not be close to the wall, ceiling, floor, floor or pipe rack. For flammable, explosive, toxic and harmful fluid pipelines, high-purity medium pipelines and valves with special requirements, the connecting parts shall be set strictly according to the design drawings.


8. Pipes with static grounding requirements shall be electrically conductive between the sections. When the resistance of the pipe flange or threaded joint exceeds 0.03 Ω, the wire shall be connected. When the resistance of the pipeline system to ground exceeds 100Ω, two grounding leads shall be provided.