|
US$179.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
WS 696-2020: (Hygienic specifications for the operation and management of air conditioning and ventilation systems in office and public places during the COVID-19 epidemic)
Status: Valid WS 696: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| WS 696-2020 | English | 179 |
Add to Cart
|
3 days [Need to translate]
|
(Hygienic specifications for the operation and management of air conditioning and ventilation systems in office and public places during the COVID-19 epidemic)
| Valid |
WS 696-2020
|
| WS/T 696-2020 | English | RFQ |
ASK
|
3 days [Need to translate]
|
(Hygienic specifications for the operation and management of air conditioning and ventilation systems in office and public places during the COVID-19 epidemic)
| |
WS/T 696-2020
|
PDF similar to WS 696-2020
Basic data | Standard ID | WS 696-2020 (WS696-2020) | | Description (Translated English) | (Hygienic specifications for the operation and management of air conditioning and ventilation systems in office and public places during the COVID-19 epidemic) | | Sector / Industry | Health Industry Standard | | Classification of Chinese Standard | C51 | | Word Count Estimation | 7,794 | | Date of Issue | 2020-07-20 | | Date of Implementation | 2020-07-20 | | Regulation (derived from) | State-health communication (2020) No. 13 | | Issuing agency(ies) | National Health Commission | WS 696-2020: (Hygienic specifications for the operation and management of air conditioning and ventilation systems in office and public places during the COVID-19 epidemic)
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Hygienic Specifications for Operation and Management of Air-conditioning Ventilation Systems in
Office Buildings and Public Places during COVID-19 Epidemic
Issued by the National Health Commission of the People's Republic of China
People's Republic of China Health Industry Standard
Office and public places during the COVID-19 pandemic
Hygienic specifications for operation and management of air conditioning and ventilation systems
2020-07 -20 implementation
2020-07 -20 released
Foreword
All technical content of this standard is mandatory.
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Drafting organizations of this standard. China Center for Disease Control and Prevention Environmental and Health Related Product Safety Institute, Shanghai Center for Disease Control and Prevention
Heart, Guangdong Provincial Center for Disease Control and Prevention.
The main drafters of this standard. Pan Lijun, Zhang Liubo, Yao Xiaoyuan, Sun Bo, Wang Jiao, Xu Huihui, Ye Dan, Zhang Jianpeng, Zhang Yujing,
Zhang Jian.
Office and public places during the COVID-19 pandemic
Hygienic specifications for operation and management of air conditioning and ventilation systems
1 Scope
This standard specifies the hygienic quality requirements, operation management requirements, and daily inspections of air conditioning and ventilation systems during the new crown pneumonia epidemic.
Monitoring requirements.
This standard applies to the hygienic management of air conditioning and ventilation systems in office and public places during the new crown pneumonia epidemic, and other infectious diseases
Refer to the implementation during the epidemic.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this
file. For undated references, the latest version (including all amendments) applies to this document.
GB/T 18204.5 Hygienic inspection methods for public places Part 5.Centralized air conditioning and ventilation systems
GB 37488 Hygienic indicators and limit requirements for public places
GB 50365 Air Conditioning and Ventilation System Operation Management Standard
GB 50736 Civil Building Heating Ventilation and Air Conditioning Design Code
WS 394 Hygienic Specification for Centralized Air Conditioning and Ventilation System in Public Places
WS/T 395 Hygienic Evaluation Specification for Centralized Air Conditioning and Ventilation System in Public Places
WS/T 396 Specification for cleaning and disinfection of centralized air conditioning and ventilation systems in public places
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Office buildings
Buildings for government agencies, organizations, enterprises and institutions to handle administrative affairs and engage in various business activities.
3.2
Low-, medium-, and high-risk regions
Based on the county (city, district, and banner) as a unit, comprehensive research and judgment based on population and incidence, and scientifically divided epidemic risk levels.
3.3
Air conditioning ventilation system
For the purpose of air conditioning and ventilation, all the equipment, which centrally process, transport and distribute the working medium, and control its parameters,
The sum of pipes and accessories, instruments and meters.
3.4
All-air air conditioning system
An air-conditioning system in which the indoor load in the air-conditioning area is borne by the air that has been heated or cooled.
3.5
Fan coil system with fresh air
The system in which air and water jointly bear the cold and heat load of the air-conditioned room, in addition to sending treated outdoor air into the room, it also
In the room, there is a terminal device using water as the medium to cool or heat the indoor air.
3.6
Fan coil system without fresh air
The fan drives the indoor air to flow, and the terminal equipment cools or heats the indoor air to reduce or increase the indoor air temperature.
To meet people's comfort requirements.
3.7
Multi-connected air conditioning system
A single refrigeration system consisting of one or several air-cooled outdoor units connected to several direct evaporative indoor units of different or the same type and capacity
Circulation system, which can directly provide treated indoor air to one or several areas.
3.8
Split air conditioner
It is composed of an indoor unit and an outdoor unit, which are installed indoors and outdoors, respectively, connected by pipelines and wires.
3.9
Air change flow
The amount of outdoor air entering the room from the air conditioning and ventilation system per unit time, in m3/(h·person).
4 Hygienic quality requirements
4.1 The hygienic quality of air conditioning and ventilation systems in public places should meet the requirements of WS 394.
4.2 The fresh air volume of the air-conditioning ventilation system in public places shall meet the requirements of GB 37488.
5 Operational management requirements
5.1 All-air air conditioning system
5.1.1 Preparation before opening
5.1.1.1 The source of fresh air and the scope of air supply should be mastered. When the type of air-conditioning and ventilation system, the range of air supply, etc. are unclear, it should
Turn off the air conditioning system at time.
5.1.1.2 Check whether the filter, surface cooler, heating (humidifier) and other equipment are operating normally, and whether the inner surface of the air duct is clean. response
Equipment and components such as open cooling towers and air handling units shall be cleaned, disinfected or replaced. Respond to the inner surface of the air duct and air supply sanitation
The quality is tested, and it can be operated only after being qualified.
5.1.1.3 The fresh air outlet and its surrounding environment should be kept clean and the fresh air should not be polluted.
5.1.1.4 The short-circuit problem of the fresh air outlet and exhaust outlet or the hidden danger of short-circuit under occasional weather conditions should be investigated. If unable to enter in the short term
If the physical location is rectified, the air conditioning and ventilation system should be turned off.
5.1.1.5 Before turning on the fresh air system in winter in cold areas, ensure that the freeze protection function of the unit is safe and reliable.
5.1.2 Management and maintenance during operation
5.1.2.1 Low-risk areas should be operated with the maximum fresh air volume, and the return air should be turned off as much as possible; medium and high-risk areas should be closed, such as return air
The air outlet (pipeline) or air-conditioning box is in use with a high-efficiency and above-grade filter device, or an effective disinfection device is installed, and the return air can be turned off. Such as
It has a mixed air structure. The mixed air components of the system should be closed before opening, and the mixed air mode should be stopped.
5.1.2.2 When air conditioning and ventilation systems are used in crowded places, indoor air flow should be enhanced; windows, doors, or fans should be opened
Wait for the ventilation device, or use natural ventilation for 20 minutes to 30 minutes every 2 hours to 3 hours in the air conditioner.
5.1.2.3 For shopping malls, office buildings and other places with a large flow of people, the ventilation should be strengthened;
The fresh air and exhaust system of the ventilating system should be operated in advance or closed for 1 h after a delay.
5.1.2.4 The sanitary management of condensate water such as air handling units and fan coils, and cooling tower cooling water should be strengthened.
5.1.2.5 The filters, vents, air handling units, surface coolers, heaters (humidifiers),
Equipment and components such as the condensate pan should be cleaned, disinfected or replaced.
5.1.2.6 U-shaped pipes such as sewer pipes, air handling devices, bathroom floor drains, and condensate drain pipes of air conditioning units shall be inspected weekly.
Water seal, replenish water in time when water is lacking.
5.2 Fan coil plus fresh air system
5.2.1 Preparation before opening
5.2.1.1 The air-conditioning ventilation system that is unclear such as the type of air-conditioning, the source of fresh air or the range of air supply should be temporarily closed.
5.2.1.2 Check whether the filter, surface cooler, heater (humidifier), fan coil and other equipment are operating normally. For open cooling towers,
Equipment and components such as air handling units and condensate pans shall be cleaned, disinfected or replaced. Deal with the inner surface of the air duct and the sanitary quality of the air supply
Carry out the test, can run after passing.
5.2.1.3 It should be ensured that the fresh air is taken directly from the outdoors, and it is forbidden to take the air from the machine room, corridor and ceiling. Ensure that the new air outlet and its surroundings
The environment is clean, and the fresh air is not polluted.
5.2.1.4 The fresh air system should be turned on 1 h before the opening of the site.
5.2.1.5 The short-circuit problem of the fresh air outlet and exhaust outlet or the hidden danger of short-circuit under occasional weather conditions should be investigated. If unable to enter in the short term
If the physical location is rectified, the air conditioning and ventilation system should be turned off.
5.2.1.6 The normal operation of the exhaust system shall be ensured.
5.2.1.7 For rooms with a depth of ≥14 m, measures should be taken to ensure ventilation in the internal area; if the fresh air volume is insufficient, it should be less than 30 m3/
(H. People) National standards require that the density of personnel should be reduced.
5.2.1.8 Before turning on the fresh air system in winter in cold areas, ensure that the freeze protection function of the unit is safe and reliable.
5.2.2 Management and maintenance during operation
5.2.2.1 The ventilation of public places with a large flow of people should be strengthened; before or after the business day, it should be opened or pushed in advance.
Turn off the air-conditioning system 1 h late.
5.2.2.2 The frequency of ventilation in densely populated office places should be increased. When the air-conditioning ventilation system is used, windows, doors or openings should be opened.
Ventilation devices such as fans, or natural ventilation for 20 minutes to 30 minutes every 2 hours to 3 hours of operation of the air conditioner.
5.2.2.3 The sanitary management of condensate water and cooling water of the air conditioning and ventilation system shall be strengthened.
5.2.2.4 Equipment and components such as cooling towers, air handling units, air supply outlets, condensate pans, etc. of the operating air conditioning and ventilation system shall be installed weekly.
Clean, disinfect or replace.
5.2.2.5 The water seals of U-shaped pipes such as sewer pipes, air handling devices, bathroom floor drains, etc. shall be inspected weekly to replenish water in time to prevent failure
Air mixing on the same floor.
5.3 Split air conditioner
5.3.1 Preparation before opening
Clean the air conditioner indoor unit filter with clean water, and clean and disinfect the air conditioner radiator when possible.
5.3.2 Management and maintenance during operation
5.3.2.1 Before using the split air conditioner every day, the doors and windows should be opened for ventilation for 20 to 30 minutes, and then the air conditioner should be turned on and adjusted to the maximum air volume
After running for at least 5 minutes, close the doors and windows; after the split air conditioner is turned off, open the doors and windows for ventilation.
5.3.2.2 For long-term use of split-type air conditioners and densely populated office places, the air conditioner should be ventilated for 20 minutes to 30 minutes every 2 hours to 3 hours.
min.
5.4 Fan-coil system or multi-line system without fresh air
5.4.1 Preparation before opening. Each independent temperature control space without fresh air fan coil system or multi-line system should be checked, and the air supply and return air are
Whether it has a closed air duct connected to the surface cooler to avoid taking back air from the connected ceiling. Fan-coil system or multi-line system without fresh air
The cleaning and disinfection shall meet the requirements of 5.3.1.
5.4.2 The management and maintenance during operation shall meet the requirements of 5.3.2.
5.5 Other operation management requirements
The air conditioning and ventilation system should also meet the requirements of current national standards such as GB 50365 and GB 50736.
5.6 Decommissioning of the air conditioning system
When a confirmed case of new coronary pneumonia, a suspected case, or an asymptomatic infection occurs, the following measures should be taken.
a) Immediately shut down the air-conditioning and ventilation system corresponding to the active area of confirmed cases, suspected cases or asymptomatic infected persons;
b) Under the guidance of the local disease prevention and control agency, immediately disinfect and clean the air conditioning and ventilation systems in the above-mentioned areas.
It can be reopened after passing the hygiene inspection and evaluation.
5.7 Hygienic evaluation, cleaning and disinfection of air-conditioning systems
The hygienic evaluation, cleaning and disinfection of air conditioning and ventilation systems in public places shall meet the requirements of WS/T 395 and WS/T 396.Office places
The hygienic evaluation, cleaning and disinfection of air conditioning and ventilation systems can be implemented in accordance with the requirements of WS/T 395 and WS/T 396.
6 Daily inspection and hygiene monitoring
6.1 Daily inspection
6.1.1 Collect basic information about the air conditioning and ventilation system, including the type of air conditioning and ventilation system, air supply area, design parameters, and the number of cooling towers
Amount, disinfection method, etc.
6.1.2 Check the integrity of the sanitation management system and sanitation management files.
6.1.3 Whether the new air outlet is equipped with a protective net and primary effect filter, and whether it is far away from the exhaust outlet of the building, open cooling tower and other pollution
source.
6.1.4 Whether the air supply outlet and return air outlet are equipped with anti-mouse devices and clean them regularly to keep the surface of the air outlet clean.
6.1.5 Does the unit have devices for emergency shutdown of return air and fresh air, devices for controlling the sub-regional operation of the air-conditioning system, etc., and can they be normal?
run. Air handling unit, air supply pipe, return air pipe, fresh air pipe, filter screen, filter, purifier, air outlet, surface cooler, heating
Whether the (wet) device, condensate pan, etc. are cleaned and kept clean as required.
6.1.6 Whether the air handling room is clean and dry, and whether irrelevant items are stored.
6.1.7 Hygienic quality inspection report of cooling water, condensate water, fresh air volume, air supply, and inner surface of air duct of air conditioning system.
6.2 Hygiene monitoring
6.2.1 The hygienic monitoring index and result judgment of the air conditioning and ventilation system in public places shall meet the requirements of WS 394.
The wind system hygiene monitoring index and result judgment can refer to the requirements of WS 394.
6.2.2 The hygienic inspection method of air conditioning and ventilation systems in public places shall meet the requirements of GB/T 18204.5.
The sanitary inspection method can be implemented according to the requirements of GB/T 18204.5.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of WS 696-2020_English be delivered?Answer: Upon your order, we will start to translate WS 696-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of WS 696-2020_English with my colleagues?Answer: Yes. The purchased PDF of WS 696-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version WS 696-2020?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version WS 696-2020 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|