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GB/T 40939-2021 PDF in English


GB/T 40939-2021 (GB/T40939-2021, GBT 40939-2021, GBT40939-2021)
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GB/T 40939-2021: PDF in English (GBT 40939-2021)

GB/T 40939-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.130.20
CCS J 73
General requirements for low temperature medical cold
store
ISSUED ON: NOVEMBER 26, 2021
IMPLEMENTED ON: JUNE 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions... 4 
4 Basic requirements ... 5 
5 Environmental and hygiene requirements ... 7 
6 Safety requirements ... 8 
7 Component requirements ... 8 
8 Assembly requirements ... 9 
9 Tests ... 9 
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2020
“Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents”.
Attention is drawn to the possibility that some of the elements of this Standard may be
the subject of patent rights. The issuing authority shall not be held responsible for
identifying any or all such patent rights.
This Standard was proposed by China National Light Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee on
Refrigeration of Standardization Administration of China (SAC/TC 119).
The drafting organizations of this Standard: Zhengzhou Kaixue Cold Chain Co., Ltd.,
Henan Provincial Center for Disease Control and Prevention, China Refrigeration
Society, Institute of Physics and Chemistry, Chinese Academy of Sciences, Chinese
Center for Disease Control and Prevention, Tianjin National Biological Protection
Equipment Engineering Technology Research Center, Qingdao Haier Biomedical Co.,
Ltd.
Main drafters of this Standard: Dai Canli, Chen Yong, Gong Maoqiong, Wang Dan, Yan
Huili, Liu Zhanjie, Yin Congxu, Feng Renjun, Wei Qiang, Qi Jiancheng.
General requirements for low temperature medical cold
store
1 Scope
This Standard specifies the basic requirements, environmental and hygiene
requirements, safety requirements, component requirements, assembly requirements
and test methods for low temperature medical cold store.
The Standard is applicable to low temperature non-walk-in indoor prefabricated cold
store for medical samples, biological agents, biological samples, of which the nominal
volume is not more than 300m3, that is of mechanical refrigeration (hereinafter referred
to as the low temperature medical cold store). The low temperature cold store for storing
other special goods shall be implemented by reference.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB 3096, Environmental quality standard for noise
GB/T 3785.1, Electroacoustics - Sound level meters - Part 1: Specifications
GB/T 9237, Refrigerating systems and heat pumps - Safety and environmental
requirements
GB/T 18883, Indoor air quality standards
JB/T 6527, The sandwich panel use for prefab cold store
SBJ 14, Code for installation and acceptance of refrigerating system with HCFC,
HFC refrigerant
IEC 61010-1, Safety requirements for electrical equipment for measurement, control,
and laboratory use - Part 1: General requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 low temperature medical cold store
The non-walk-in indoor prefabricated cold store that the temperature range is -186℃~-
40℃, that is used for low temperature test or low temperature storage, preservation of
medical samples, biological agents, biological samples and special materials.
3.2 biological sample
Any substance obtained or derived from living organisms such as humans, animals,
plants, microorganisms or non-animal/vegetable multicellular organisms such as brown
algae and fungi.
3.3 non walk-in cold store
The cold store that no personnel is allowed in daily operation.
3.4 cooling-down time
Under the specified test conditions, the time required for the average temperature of
each measurement point to reach the specified temperature when the low temperature
medical cold store runs continuously under no-load condition.
4 Basic requirements
4.1 The low temperature medical cold store shall be manufactured and installed in
accordance with this document and the drawings and technical documents of the
professional designer. Special requirements shall be required in the contract or
agreement. Supplementary provisions or explanations shall be made in the
corresponding technical documents.
4.2 Environmental protection materials shall be adopted for the used envelope structure,
thermal insulation materials and refrigeration system thermal insulation materials.
4.3 The low temperature medical cold store shall have independent double door lock
storage door and equipment with double management function.
4.4 The low temperature medical cold store shall have a backup refrigeration device, so
as to ensure that the storage temperature requirements are met under the condition of
refrigeration system failure.
4.5 The low temperature medical cold store shall have all-weather, full-time remote
monitoring and information alarm functions. It shall have control and rights
management functions.
4.6 The storage temperature shall meet the requirements of Table 1.
4.12 The resolution of the pressure measuring device shall not be greater than 0.01MPa.
The measurement error shall not be greater than 0.01MPa.
4.13 The temperature and pressure data of the refrigeration system shall have a display
function. It shall be automated and exportable. The recording interval can be set from
1min ~ 30min. The data retention period shall not be less than 36 months.
4.14 The temperature in the store is higher than the upper limit or lower than the lower
limit set alarm temperature. Refrigeration system pressure is higher than the upper limit
or lower than the lower limit set alarm pressure. All shall have an alarm function. Alarm
parameters can be manually operated on site or set remotely. The alarm mode is
displayed by sound and light alarm or warning. When alarming, it shall have the
function of automatically sending alarm information.
4.15 The low temperature medical cold store shall have management functions such as
sample storage, retrieval and statistics.
4.16 The low temperature medical cold store for important medical samples, biological
preparations, biological samples shall be equipped with a temperature monitoring
system.
5 Environmental and hygiene requirements
5.1 According to the requirements of GB/T 18883, when the low temperature medical
cold store is installed indoors, the ambient temperature shall be controlled at
16℃~28℃; the relative humidity of the environment shall be controlled at 30%~80%;
the fresh air volume shall not be less than 30m3/(h·person). For the storage of biological
products with special requirements, they shall also meet their special requirements, such
as biological (total number of bacteria), cleanliness, ultraviolet disinfection.
5.2 The illumination of the core work area of the work site outside the store shall not
be less than 350lx. The illumination of other areas shall not be less than 200lx.
Waterproof, energy-saving lighting shall be used. The workplace shall avoid excessive
light and light reflections. Configure an emergency lighting system with a lighting time
of not less than 30min.
NOTE: The above-mentioned illuminance is the measured value at a height of 1m from the ground.
5.3 The impact of noise during operation on the surrounding environment shall comply
with the provisions of GB 3096.
5.4 The low temperature medical cold store shall have anti-vibration, moisture-proof
and rodent-proof facilities. The facilities shall be regularly cleaned, disinfected and
maintained.
7.4.2 Electrical components shall have product certification.
8 Assembly requirements
8.1 When the store body is an assembled structure, each side, top and bottom surface
shall be composed of heat-insulating sandwich panels. It can be integrally formed or
installed on site.
8.2 The dislocation between the plates at the joints of the enclosure structure shall not
be greater than 2mm. The difference between the diagonals of the surfaces shall not be
greater than 1.5/1000 of their theoretical value.
8.3 The sealing strip of the low temperature medical cold store door shall be close to
the surrounding of the door frame. The sealing performance shall be good.
8.4 The joints of the inner tank of the low temperature medical cold store shall be sealed
evenly, continuously and uninterruptedly with a low-temperature-resistant sealant.
8.5 The gap fastening material of the low temperature medical cold store shall be made
of the same expansion coefficient material as the inner tank, so as to ensure the same
low temperature deformation coefficient.
8.6 Electrical switches, buttons, meters and indicator lights shall be firmly installed and
meet the requirements of IEC 61010-1. The operation of all switches and buttons shall
be sensitive, precise and reliable.
8.7 Refrigeration system assembly shall meet the requirements of SBJ 14.
8.8 When pipes and cables pass through the storage body, anti-cold bridges and sealing
treatments shall be used. The treatment surface shall be smooth, firm and safe.
8.9 The refrigeration unit shall have safety protection devices and control devices to
maintain the normal operation of the low temperature medical cold store.
9 Tests
9.1 Test conditions
9.1.1 Test environment
The low temperature medical cold store shall be suitable for one or more of the
temperature bands shown in Table 3.
9.2 Test methods
9.2.1 General requirements
Visually inspect the cold store components and assembly quality.
9.2.2 Storage temperature
Cool down according to the test conditions specified in 9.1. When the operation of the
low temperature medical cold store reaches a stable operation state, and the operation
is stable for at least 24h, for multiple defrosts, the whole test operation cycle is the time
of the integral multiple of the defrost interval closest to 24h. Record the temperature of
each measurement point in the store.
9.2.3 No-load cooling-down time
According to the environment specified in 9.1, close the door of the low temperature
medical cold store. Adjust the thermostat to the required set position for the storage
temperature. Turn on the refrigeration unit. Test the time when the temperature in the
test room reaches the storage temperature.
9.2.4 Condensation
Continue to carry out after the end of the storage temperature test in 9.2.2. Other
conditions for the operation of the low temperature medical cold store are the same as
the storage temperature test. The stable operation time shall be at least 4h. Record the
ambient temperature, ambient humidity, temperature of each measuring point and
condensation.
9.2.5 Defrost performance
After the low temperature medical cold store reaches a stable operating state, observe
whether it can resume normal operation after the defrosting process and the temperature
change in the store.
9.2.6 Noise testing
Measure according to GB 3096 requirements.
9.2.7 Safety test
Carry out in accordance with the provisions of IEC 61010-1.
9.2.8 Cold store components
Use visual inspection and hand inspection.
9.2.9 Store body structure
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.