GB 19210-2003 Specification for cleaning of air conditioning and ventilation systems
Some standard content:
B1921C—2003
Chapter 3, draft B, 6.4.3 and Appendix A of this standard, Appendix B are recommended clauses. Most of its core technical contents are mandatory. This standard follows the relevant national policy wind and oil cleaning association professional industry standard "Evaluation of degassing and cleaning system. Decontamination and static recovery (ACR2OU2)" and the technical standard of the Japanese air duct cleaning association (1991 edition). The appendixes and appendix pieces of this standard are supplementary appendices. This standard covers both high school standard promotion and research, and was issued by Beijing University of Technology, and the supervision of this standard belongs to China National Institute of Standardization.
This standard was developed by: China Institute of Physics and Chemistry, Beijing University of Technology, National Standardization Technical Committee of Purification Equipment, Academy of Military Sciences, National Refrigeration Equipment Standardization Technical Committee. Bluestar Qingyin Engineering Co., Ltd.: The main contributors to this standard are Zhao Kuanhu, Li Dengxian, Ma Nianfang, Maoneng, Che Fengqi, Xue Defu, Zhang Ji, and GB 19210—2003
With the development of economy and the continuous improvement of people's living standards, central air conditioning and ventilation systems have become important facilities in many building centers. If people are concerned about the high risk of atypical pneumonia, the central air conditioning and ventilation systems will be fully equipped. In order to further effectively prevent the occurrence of atypical pneumonia, the Ministry of Health recently issued an emergency notice on the prevention of atypical pneumonia, requiring each large-scale building to do a good job in the disinfection of central air conditioning and ventilation systems. In order to standardize the ventilation system! .The production letter system improvement project may cause a pollution, so the national chemical management committee urgently issued the "air duct cleaning standard specification" and incorporated the standard into the relevant technical standards for the prevention and treatment of SARS. The diagnosis and evaluation standards of the air duct system mainly include the American National Air Conditioning Office Industry Standards, Air Duct Cleaning and Repair (ACR23) and the Chemical Technology Standard of this Association 3: Edition). In summary, the task of the preparation of this mark is to conduct practical evaluation of some important scientific parts in the standard, such as sampling and judgment in the inspection plan, etc. In the future, we will summarize the experience in the second process of the hospital and make supplementary comments in the standard. 1 Specification
Air conditioning and ventilation system cleaning specification
B192:02303
This standard meets the requirements of: Diwen and the rigid system in the research system (high name: the research system! The inspection of the degree of competition, the control of the type of work, the flow of washing to achieve the reverse washing and replacement, the two-phase monitoring and inhibition of the washing effect, this standard is applicable to the consideration of the physical properties of dust particles, and has no special requirements for air filtration and the cleaning conditions of the wind in the air conditioning system.
2 Normative Cited documents
The following documents shall become the clauses of this standard through use. For any dated referenced documents, their subsequent amendments (including the contents or revisions) shall not be applicable to this standard. However, the parties to the agreement on the standard shall pay attention to the latest version. For any undated referenced documents, the latest version shall apply to this standard. [1T50] Ventilation, purification equipment, terminology (G) 3/T7095 Air inhalation and decontamination equipment GB/T8208: Test method for total number of inhalable air microorganisms in public buildings GB/T18883 Standard for indoor air quality
3 Terms and definitions
In addition to the definitions in B/T160, the following terms and definitions are used in this standard 3 1
Social set Jining
refers to the adhesion to the inner surface of the air belt, the improvement of the wall of the fiber, the improvement of the other training materials, etc. 3.2
Air handling unit airFunrllilugmit conveying purification and Xie air "(hot and cold, south) unit. 3.3
Biological contaminants hindagicalcontaminantk microscopic fungi (mother bacteria, disease, animal skin, flowers, and other biological properties, to improve the number of biological substances. 3. 4
Connected vacuum dust can
contcae
with a controlled air inlet through a relatively large pipe connected to the portable collection device to transfer the suction loss relatively large stomach, the li head directly back to the cleaning surface contact 3.5
Cunluminal contaminants
pass and any material should not be in the system before. 3. 6
Cleaning area
A designated working space during the inspection and cleaning process to avoid transferring pollutants to adjacent areas. 3.7
Air duct system in ventilation and air conditioning systemAlrdoctsyeleminheatingventilalionandalr-canditlonigsystemsVentilation and air conditioning system is a small part of the air supply, ventilator, air conditioning unit and its components,1
GR19?1n—2003
Mechanical devicemechaniralagitatinndevdeeThe device that uses the dynamic method to remove pollutants and debris in the system,3.9
Machine cleaning
The physical method of removing pollutants and debris from the system. 3.10
Negative air machineA kind of high-efficiency air passing machine that is used to collect dust, contain dust and control the pressure in the working area. The exhaust port of this equipment does not need to be connected to the outside of the quick-release area. 3.11
Non-porous materialsOn-perons materials are materials that are not permeable to water and air in the ventilation system, such as films, rubbings or materials. 3.12
Porous materialsPorous materialsRalals
Materials that are sensitive to water or air in the ventilation system, such as core boards, wood, soil, etc. 3.13
Visually clean
The inner surface of the ventilation system is free of adhesives and residues. 3.14
Wet cleaning
The method of using water or liquid chemicals to clean the ventilation system and its components. Inspection of ventilation system
4.1 Inspection time
The ventilation system should be inspected regularly and the cleanliness level should not be less than the requirements in the table. In wet areas or areas with severe pollution, the inspection week should be shortened or advanced accordingly. 4.2 Inspection scope: Ventilation system inspection interval: Air handling units, air supply units, return air units, pipes and other components of the ventilation system should be inspected. When the ventilation system contains a single air handling unit: All standard units should be inspected. The indoor environment should not be exposed. When there is a small amount of pollution or when there are few pollutants that endanger the environment in the area. A collection environment control zone shall be provided. 4.2.1 Air handling unit All components of the air handling unit shall include filters and air filters, heating and cooling brine pipes, condensate drain pipes, humidification systems, noise reduction materials, fans and fan components, panels, seals and integral components, etc. 4.2.2 Supply air supply The typical parts of the air system shall include controllers, heat exchangers, heat recovery panels and their internal components. 4.2.3 Return air ducts CB 19210—2003 The typical parts of the return air system shall include supply air ducts, air conditioners, zone air boosters, air mixing boosters and grids, etc. 4.3 Inspection of microbial contaminants
The dust pollution in the ventilation system should be inspected, including the microbial contamination situation and the microbiological situation of the air treatment units, air distributors and other typical parts. If the ventilation system is equipped with a limiter, it should be inspected at least twice a year, and the air supply should be inspected for microbial sources.
4.4 Inspectors
The inspector should be familiar with the duct system to be inspected and have The inner ring tower adopts the cooling system of the air conditioning system, and is familiar with the modern air conditioning ventilation system wind cleaning procedures and state standards. The conditions for cleaning are as follows: When any of the following conditions occur, the ventilation system will be cleaned. n) There is pollution in the ventilation system: 1) Various pollutants or fragments in the system are accumulated to a level that can be clearly seen; 2) There are obvious biological pollutants in the test results. The inspection method should be in accordance with G/T181.1. The right standard is:
%）The ventilation system has a relatively large dust entering the room, or the system performance has decreased after testing the requirements specified in GB/T17LH5:
The heat exchanger coil, refrigeration coil, air flow control, filter and air handling unit have been confirmed to have certain restrictions, blockage, dirt deposition and serious impact on the performance of the duct system, ) There are special requirements for indoor air quality; people are not harmed, such as Jiang'an coal sticky cows have significantly increased, the immune system has been damaged, special circulation has enough sense to build the board adult to be forbidden
5 Engineering environmental control
5.1 Ventilation duct negative pressure
At the end of the cleaning, the air inside should be kept at a certain negative pressure. Business trips can be achieved through air negative machines or vacuum dust collection equipment: The exhaust air should be collected in accordance with relevant industry prevention measures to prevent pollution. The air-conditioner or high-altitude dust collector should be as close to the disinfection and inspection port as possible. The ventilation system can be operated after reverse connection. In order to maintain the required emergency pressure, other openings of the ventilation system should be sealed at regular intervals. If the ventilation system under the cleaning system is installed, it should be operated under negative pressure conditions.
If there is no special design, the air-conditioner should not be used to collect large amounts of dust. 5.2 Isolation of working area
The working area can be separated from other areas of the building by a barrier. The cross-pollution of the area outside the working area can be reduced by reducing the dust in the air outside the working area. 5.2.12 In the case of a two-stage cleaning of the ventilation system of non-public, commercial, and shipping companies, the following measures should be taken to protect the environment from microbial contaminants: (1) In summer, the operating area should be cleaned thoroughly and the protective ventilation should be carried out quickly: ensure that the air duct is under negative pressure. The indoor cooking room where the operating area is located should be kept connected to the indoor cooking room. 192102003
Replacement of parts and components, inspection of dust collection and storage, remote replacement of equipment and supplies, and flushing of dust collection devices. 5.2.2 Special circumstances: Special isolation of various types of waste materials in buildings, especially cleaning of ventilation systems of sanitary buildings. For the above situations, the following measures should be taken: 5.2.2 Special circumstances: Inspection of dust collection and storage, inspection of equipment and supplies, remote replacement of equipment and supplies, remote replacement of equipment and supplies, and flushing of dust collection devices. 5.2.2 Special circumstances: Special isolation of various types of waste materials in buildings, especially cleaning of ventilation systems of sanitary buildings. For the above situations, the following measures should be taken: ? 、Protection of health: The indoor ground alarm, danger equipment and home management of the operation area should be carried out. h) The isolation of the operation area should be handled by using 1mm fireproof polypropylene and its substitutes. The connection between the two isolation objects should be tight:
Negative pressure: The island area should maintain appropriate negative pressure. The negative pressure leather should be installed as much as possible to prevent the exhaust gas from leaking out of the negative pressure area: The negative pressure exhaust gas should be filtered through a high-efficiency air filter. If the pressure device is small enough, the high-volume gas meter should be confirmed according to the room model.
Before disassembling or disassembling the isolation device, the internal sealing system or the high-efficiency air filter should be disinfected.
5. 3 Decontamination and cleaning device
The equipment and equipment in the operation area should be cleaned. All equipment in the work area should be kept in a safe state. In the overall economy, the limit is higher than the lack of health knowledge. When people are working in a more polluted environment, they must know the internal pollutants of the system every day, or there is a strict hygiene chain, such as special fluorescent materials entering the cleaning system. Before the cleaning workpiece is started, the cleaning equipment must be sanitized and checked for safety. 5.3.2 Operating status
All cleaning devices should be kept in good working condition and meet the requirements of relevant performance and safety standards. 5.3.3 Vacuum cleaner filters
When there is a "re-setting of the filter efficiency for the elimination of biological or harmful substances, when the vacuum cleaner is in the range of 1 month to 2 months, the high-efficiency air filter with a filtration efficiency of 0.3 to 9.97% must be used. Before the following effects need to be ensured, the high-efficiency air flow through the piece must be ensured. 5.4 Fire detection equipment
Special engineering should not be damaged, changed or destroyed. The detection equipment in the ventilation system should be modified or replaced. When using fire detection equipment, the relevant national regulations and heat control regulations should be followed. 5.5 Building pressurization and decompression
The building pressurization and decompression plan should be considered. The dynamic changes in the building pressure will produce potential consequences. The building environment should be increased or reduced due to the increase in water or the reduction of insects. 5.6 The use of chemical agents
The chemicals used in the ventilation system should meet the requirements of the relevant national regulations and standards and should not cause damage to the ventilation system and personnel.
5.7 Pollutant treatment
The pollutants from the air intake system should be evenly distributed to prevent contamination. The production level should be classified and treated according to the relevant national or local regulations.
The dust collection equipment should be placed outside the building or in a negative pressure vehicle away from the sensitive air pollution. 5.8 Engineering plan
An engineering plan should be formulated for the ventilation system. The engineering plan includes the following contents: 9) General area monitoring plan
h) Working pressure:
) Corresponding procurement work:
d!
e The number of staff members in the work unit:
) Equipment verification:
h) The method used in the process
1) The cleaning agent used;
) Safety plan:
k) Its documents.
5.9 Air purification
GA19210-2Q03
The ventilation system is cleaned and cleaned after cleaning: General and commercial, health and health care, special room air is cleaned.
The purification process requires that the air should be purged at least once per hour to reduce the dust particles in the work area to the level of G13T18883. 5.:0 Hazardous volatiles
Before the special process begins, it must be confirmed that the type of chemical agents and substances used are free of gases: The use of volatile substances should be controlled as much as possible to prevent workers from being injured. 5.11 Notice
Before using any cleaning agent, disinfectant, or system cleaner, please read the cleaning notice issued by the property owner or its authorized agent, including any cleaning agents that may produce excessive or excessive gases. 6 Cleaning of ventilation system
6.1 Machine-controlled cleaning method
Reversible belt air delivery equipment, high-pressure air source, and high-pressure water source and other equipment should be installed in the same pipe to effectively collect the descending materials in the descending room. Before the machine is cleaned or after high-flow cleaning, any sealant and powder should be used. Polyester and other porous materials are allowed to use sealants as temporary measures.
6.1.1 Vacuum cleaning equipment
The vacuum suction belt should have sufficient power to ensure the protection of people and the environment inside and outside the room.
6.1.2 Analysis and recovery
The cleaning requirements are mechanical stirring. The debris stuck on the surface of the system should be separated and the debris can be transmitted to the vacuum cleaning equipment. 6.1.3 Contact type vacuum cleaners
Contact type point inspection equipment should use high-efficiency air exhaust equipment and be carried out in designated areas of the ventilation system. 6.1.4 Thermal cleaning
High-pressure washing, steam washing or any other form of wet cleaning process should not cause damage to the ventilation system components. The porous parts of the ventilation system should not be exposed to the active food or water. The wet air treatment unit should be sealed in the operation area with residual chemical warfare technology: the wastewater produced by wet air treatment should be packaged in the operation area and treated according to the current situation.
6.2 Components
All components with pollutant accumulation such as the air treatment unit, the exhaust panel, the cut-off water tray and the cooling pipe, the man-machine, the exhaust pipe, the main pipe and the parts should be disinfected: For areas where direct cleaning is difficult or no entrance should be opened for disinfection. There are places where the heating and cooling coils of the unit cannot be cleaned. The coils should be removed or removed for cleaning. The cleaning method used should ensure that the ventilation system meets the requirements of safety. After cleaning, the throttle valve, air vent, grille, diffuser and other air conditioning devices should be turned off. When cleaning the electric heating coil, the power supply of the coil should be turned on and the coil should be turned on or off. For wet cleaning, only non-toxic flushing agents are allowed. The chemical preparation should be replaced and cleaned before the coil is reused. The inspection port should be fully cleaned and cleaned. 6.3 Cleaning of glass fiber parts: Use an effective vacuum cleaner or other appropriate equipment to clean the glass fiber parts. The glass fiber should not be mixed during cleaning, the cleaning force must not cause density to the components, and the product should meet the requirements of visual disinfection. 6.4 Cleaning of biological pollutants
6.4.1 Cleaning method
The ventilation system surface should be cleaned by mechanical cleaning method to remove dust, release old dust, nutrients and the surface of the door frame after disinfection. 6.1.2 Replacement of porous materials
The porous materials contaminated by biological pollution should be replaced regularly: All porous materials under the standard should be cleaned before the new porous materials are developed.
6.4.3 Washing of porous materials contaminated by biological pollution
The light-emitting porous materials cannot be bright, so as to control the flow, the surface of the porous materials should be cleaned when replacement is required. 6.4.4 Surface treatment
Surface treatment using paint or sealant is sufficient as a temporary control measure to restore the overall health of the material surface. Other surface treatments include: disinfectants, disinfectants, and surface treatments. Disinfectants should be used strictly in accordance with the manufacturer's instructions. After cleaning, the material should be repaired and replaced.
7.1 Repair and replacement of materials
After disinfection, when dust particles or odors are obviously present on the surface of the material parts, and the pressure of the air entering the ventilation system is not affected, the material should be repaired.
Thermal insulation and other obvious products. If the agent is damaged by the supplier, the two areas that have been screened and cut off can be repaired with the corresponding procedures after the disinfection is qualified. 7.2 External insulation materials should be replaced due to cleaning operations. The exposed or cracked bricks or anti-fragmented bricks should be removed. After the cleaning operation is completed, the air conditioning system should be re-operated and these parts should be repaired to ensure that they can function effectively. 7.3 Records The original damage or damage to the ventilation components that need no special treatment found during the cleaning process should be recorded in time and handed over to the property management of the building being cleaned.
8 Engineering monitoring
When cleaning is carried out in a sensitive environment or in a building containing harmful objects, or under special safety requirements, engineering monitoring measures should be implemented. Specific monitoring indicators are as follows:
3 Inspection of cleaning effect
9.1 Inspection requirements
After the ventilation system is shut down and before the system components are used by the user, an inspection should be carried out to verify the cleaning effect. The cleaning effect inspection methods include the following: 3.2 Visual inspection method GB19210—2003 The porous and non-porous parts should be inspected by the visual inspection method to judge whether the duct system has reached the visual cleanliness. When there is no debris and non-adhesive material on the inner surface, it can be considered that the visual cleanliness has been achieved. 9.3 Weighing method 9.3.1 Place the magnetic sample frame on the inner surface of the duct for inspection. Wipe the surface of the duct covered by the non-woven fabric, and then After that, the quality is the worst before and after the withdrawal of the market. The cleaning effect of the air duct is evaluated to see the pollution situation in the air duct. 9.3.2 Use of materials
a) Wipe sample: The color and size of the sampling materials are shown in Appendix B: b) Non-woven fabric;
Dense time whole material packaging (ramxram);
Precision balance (±0.0001g;
Disposable plastic;
Measurement tray
[) Safe deposit box;
i) Record sheet
9.3.3 Inspection method
9. 3. 3. Preparation before inspection
Divide a piece of swab fabric into equal parts and put two parts in a sealed bag as a set. Fill in the inspection point and inspection position and write the model number on the sealed bag and store it for use after 1 person. Place each nonwoven fabric on a weighing scale twice and take the average value as the quality plate before replacement. 9.3.3.2 Current detection Place the selected sample in the test position. a) Use two pieces of nonwoven cloth to wipe the residual dust in the sample. b) Place the two pieces of nonwoven cloth in a plastic container for protection. 3) Mark the nonwoven cloth before cleaning. This position should be selected as the sampling position of the selected core. 9.3.3.3 Laboratory measurement The nonwoven fabric collected is measured twice on the same level and the average value is taken as the quality of the page. Take the average quality of each set and convert it into the value of each level and take this value as the quality of the sample. 9.3. 4 Standard index
Residual dust particles should be TC/r*
9.4 Inspection rules
The ventilation system should be randomly selected for testing (1 point on the duct, 3 points on the air handling unit, and 1 point on the inner surface of each point on the duct). The total average value should be obtained. The total average value should be in accordance with the requirements of 5, 3, and 4.
G8 19210—2003
ATOverview
Develop a monitoring plan for ventilation system flow. Appendix
(Theft Protection)
Engineering Monitoring
These methods are often developed by building owners or their representatives. The following issues should be considered in the development of the method: - Protection of industrial and labor products during the ventilation system management process, protection of precision equipment, building materials and isolation areas, protection and shutdown Use safety control devices,
Contents of engineering monitoring plan
A typical engineering monitoring plan should include the following main contents: 1. Verification of the personnel responsible for the cleaning project at the preparatory meeting: 1. Model documents of the equipment required for the cleaning project: 1. Confirmation of the sanitary conditions of the equipment before the equipment arrives at the work area! 1. Monitoring of the indoor environment, so that the selected work will have a small impact on the residents: 1. Monitoring of the effectiveness of the isolation zone
Check whether the chemicals and materials entering the work area are approved: Check the use of safety equipment:
Monitor the economic efficiency according to the specifications and this table: 1. Record the cleaned area:
Check whether the closing force number of the inspection port is correct: Provide engineering acceptance documents.
(Informative Appendix)
Test the form and size of the sampling frame of the test tube. If B1 is shown, t
, x=. ua . I un x=2c t I uFigure B, 1 sitting type template
80 num·20 mm
heart talk 19210—2503And give it to the property of the building being cleaned.
8 Engineering monitoring
When cleaning is carried out in a sensitive environment or in a building containing harmful objects, or under special safety requirements, engineering emergency control measures should be implemented, with specific monitoring requirements A:
3 Inspection of cleaning effect
9.1 Inspection requirements
After the ventilation system is cooled and before the system components are used by people, the cleaning effect should be inspected. The cleaning effect inspection methods include the following: 3.2 Visual inspection method GB19210—2003 The porous and non-porous parts should be inspected by the visual inspection method to judge whether the duct system has reached the visual cleanliness. When there is no debris and non-adhesive material on the inner surface, it can be considered that the visual cleanliness has been achieved. 9.3 Weighing method 9.3.1 Place the magnetic sample frame on the inner surface of the duct for inspection. Wipe the surface of the duct covered by the non-woven fabric, and then After that, the quality is the worst before and after the withdrawal of the market. The cleaning effect of the air duct is evaluated to see the pollution situation in the air duct. 9.3.2 Use of materials
a) Wipe sample: The color and size of the sampling materials are shown in Appendix B: b) Non-woven fabric;
Dense time whole material packaging (ramxram);
Precision balance (±0.0001g;
Disposable plastic;
Measurement tray
[) Safe deposit box;
i) Record sheet
9.3.3 Inspection method
9. 3. 3. Preparation before inspection
Divide a piece of swab fabric into equal parts and put two parts in a sealed bag as a set. Fill in the inspection point and inspection position and write the model number on the sealed bag and store it for use after 1 person. Place each nonwoven fabric on a weighing scale twice and take the average value as the quality plate before replacement. 9.3.3.2 Current detection Place the selected sample in the test position. a) Use two pieces of nonwoven cloth to wipe the residual dust in the sample. b) Place the two pieces of nonwoven cloth in a plastic container for protection. 3) Mark the nonwoven cloth before cleaning. This position should be selected as the sampling position of the selected core. 9.3.3.3 Laboratory measurement The nonwoven fabric collected is measured twice on the same level and the average value is taken as the quality of the page. Take the average quality of each set and convert it into the value of each level and take this value as the quality of the sample. 9.3. 4 Standard index
Residual dust particles should be TC/r*
9.4 Inspection rules
The ventilation system should be randomly selected for testing (1 point on the duct, 3 points on the air handling unit, and 1 point on the inner surface of each point on the duct). The total average value should be obtained. The total average value should be in accordance with the requirements of 5, 3, and 4.
G8 19210—2003
ATOverview
Develop a monitoring plan for ventilation system flow. Appendix
(Theft Protection)
Engineering Monitoring
These methods are often developed by building owners or their representatives. The following issues should be considered in the development of the method: - Protection of industrial and labor products during the ventilation system management process, protection of precision equipment, building materials and isolation areas, protection and shutdown Use safety control devices,
Contents of engineering monitoring plan
A typical engineering monitoring plan should include the following main contents: 1. Verification of the personnel responsible for the cleaning project at the preparatory meeting: 1. Model documents of the equipment required for the cleaning project: 1. Confirmation of the sanitary conditions of the equipment before the equipment arrives at the work area! 1. Monitoring of the indoor environment, so that the selected work will have a small impact on the residents: 1. Monitoring of the effectiveness of the isolation zone
Check whether the chemicals and materials entering the work area are approved: Check the use of safety equipment:
Monitor the economic efficiency according to the specifications and this table: 1. Record the cleaned area:
Check whether the closing force number of the inspection port is correct: Provide engineering acceptance documents.
(Informative Appendix)
Test the form and size of the sampling frame of the test tube. If B1 is shown, t
, x=. ua . I un x=2c t I uFigure B, 1 sitting type template
80 num·20 mm
heart talk 19210—2503And give it to the property of the building being cleaned.
8 Engineering monitoring
When cleaning is carried out in a sensitive environment or in a building containing harmful objects, or under special safety requirements, engineering emergency control measures should be implemented, with specific monitoring requirements A:
3 Inspection of cleaning effect
9.1 Inspection requirements
After the ventilation system is cooled and before the system components are used by people, the cleaning effect should be inspected. The cleaning effect inspection methods include the following: 3.2 Visual inspection method GB19210—2003 The porous and non-porous parts should be inspected by the visual inspection method to judge whether the duct system has reached the visual cleanliness. When there is no debris and non-adhesive material on the inner surface, it can be considered that the visual cleanliness has been achieved. 9.3 Weighing method 9.3.1 Place the magnetic sample frame on the inner surface of the duct for inspection. Wipe the surface of the duct covered by the non-woven fabric, and then After that, the quality is the worst before and after the withdrawal of the market. The cleaning effect of the air duct is evaluated to see the pollution situation in the air duct. 9.3.2 Use of materials
a) Wipe sample: The color and size of the sampling materials are shown in Appendix B: b) Non-woven fabric;
Dense time whole material packaging (ramxram);
Precision balance (±0.0001g;
Disposable plastic;
Measurement traybzxZ.net
[) Safe deposit box;
i) Record sheet
9.3.3 Inspection method
9. 3. 3. Preparation before inspection
Divide a piece of swab fabric into equal parts and put two parts in a sealed bag as a set. Fill in the inspection point and inspection position and write the model number on the sealed bag and store it for use after 1 person. Place each nonwoven fabric on a weighing scale twice and take the average value as the quality plate before replacement. 9.3.3.2 Current detection Place the selected sample in the test position. a) Use two pieces of nonwoven cloth to wipe the residual dust in the sample. b) Place the two pieces of nonwoven cloth in a plastic container for protection. 3) Mark the nonwoven cloth before cleaning. This position should be selected as the sampling position of the selected core. 9.3.3.3 Laboratory measurement The nonwoven fabric collected is measured twice on the same level and the average value is taken as the quality of the page. Take the average quality of each set and convert it into the value of each level and take this value as the quality of the sample. 9.3. 4 Standard index
Residual dust particles should be TC/r*
9.4 Inspection rules
The ventilation system should be randomly selected for testing (1 point on the duct, 3 points on the air handling unit, and 1 point on the inner surface of each point on the duct). The total average value should be obtained. The total average value should be in accordance with the requirements of 5, 3, and 4.
G8 19210—2003
ATOverview
Develop a monitoring plan for ventilation system flow. Appendix
(Theft Protection)
Engineering Monitoring
These methods are often developed by building owners or their representatives. The following issues should be considered in the development of the method: - Protection of industrial and labor products during the ventilation system management process, protection of precision equipment, building materials and isolation areas, protection and shutdown Use safety control devices,
Contents of engineering monitoring plan
A typical engineering monitoring plan should include the following main contents: 1. Verification of the personnel responsible for the cleaning project at the preparatory meeting: 1. Model documents of the equipment required for the cleaning project: 1. Confirmation of the sanitary conditions of the equipment before the equipment arrives at the work area! 1. Monitoring of the indoor environment, so that the selected work will have a small impact on the residents: 1. Monitoring of the effectiveness of the isolation zone
Check whether the chemicals and materials entering the work area are approved: Check the use of safety equipment:
Monitor the economic efficiency according to the specifications and this table: 1. Record the cleaned area:
Check whether the closing force number of the inspection port is correct: Provide engineering acceptance documents.
(Informative Appendix)
Test the form and size of the sampling frame of the test tube. If B1 is shown, t
, x=. ua . I un x=2c t I uFigure B, 1 sitting type template
80 num·20 mm
heart talk 19210—2503
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