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SB/T 10345.2-2012 (SBT 10345.2-2012)

Chinese standards (related to): 'SB/T 10345.2-2012'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusGoogle Book
SB/T 10345.1-2012English1059 Add to Cart Days<=7 Refrigerating systems and heat pumps. Safety and environmental requirements. Part 1: Basic requirements, definitions and classification SB/T 10345.1-2012 Valid SBT 10345.1-2012
SB/T 10345.2-2012English625 Add to Cart 0--10 minutes. Auto immediate delivery. Refrigerating systems and heat pumps. Safety and environmental requirements. Part 2: Design, construction, testing, marking and documentation SB/T 10345.2-2012 Valid SBT 10345.2-2012
SB/T 10345.1-2001English1399 Add to Cart Days<=9 Refrigerating systems and heat pumps. Safety and environmental requirements. Part 1: Basic requirements, definitions, classification and selection criteria SB/T 10345.1-2001 Obsolete SBT 10345.1-2001
SB/T 10345.2-2001English759 Add to Cart Days<=5 Refrigerating systems and heat pumps. Safety and environmental requirements. Part2: Design, constraction, testing, marking and documentation SB/T 10345.2-2001 Obsolete SBT 10345.2-2001


   
BASIC DATA
Standard ID SB/T 10345.2-2012 (SB/T10345.2-2012)
Description (Translated English) Refrigerating systems and heat pumps. Safety and environmental requirements. Part 2: Design, construction, testing, marking and documentation
Sector / Industry Domestic Trade Industry Standard (Recommended)
Classification of Chinese Standard J73
Classification of International Standard 27.080; 27.200
Word Count Estimation 44,497
Older Standard (superseded by this standard) SB/T 10345.2-2001
Quoted Standard GB/T 18517; ISO 12100; ISO 13849-1; ISO 14040
Adopted Standard EN378-2-2008, NEQ
Drafting Organization China Refrigeration Institute
Administrative Organization National Standardization Technical Committee refrigeration
Regulation (derived from) ?Ministry of Commerce Announcement 2012 No.47; Industry Standard Filing Announcement 2012 No.9 (Total No.153)
Proposing organization People's Republic of China Ministry of Commerce
Issuing agency(ies) People's Republic of China Ministry of Commerce
Summary This standard applies to the refrigeration system, including piping, components, materials and directly connected to the system ancillary equipment design and production. And provides a test of the refrigeration system, run, marking and documentation requ


SB/T 10345.2-2012: PDF in English (SBT 10345.2-2012)
SB/T 10345.2-2012
SB
DOMESTIC TRADE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 27.080; 27.200
J 73
Filing No.: 37192-2012
Replacing SB/T 10345.2-2001
Refrigerating systems and heat pumps -
Safety and environmental requirements - Part 2:
Design, construction, testing, marking and
documentation
ISSUED ON: AUGUST 01, 2012
IMPLEMENTED ON: NOVEMBER 01, 2012
Issued by: Ministry of Commerce of PRC
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 6 
3 Terms, definitions, naming, classification and abbreviations of refrigerants .. 6 
4 Major hazards ... 6 
5 Safety requirements and measures ... 7 
6 Requirements for assembly ... 13 
Appendix A (Normative) Additional requirements for R717 refrigeration systems
and heat pumps ... 50 
Appendix B (Normative) Determination of assembly type ... 52 
Appendix C (Normative) Requirements for intrinsic safety test ... 57 
Appendix D (Informative) Installation examples of pressure relief devices in
refrigeration systems ... 60 
Appendix E (Informative) Checklist for device appearance inspection ... 64 
References ... 66 
Refrigerating systems and heat pumps -
Safety and environmental requirements - Part 2:
Design, construction, testing, marking and
documentation
1 Scope
This part applies to the design and manufacture of refrigeration systems
including piping, components, materials and auxiliary equipment directly
connected to the system; specifies the requirements for testing, operation,
marking and documentation of the refrigeration system. For heat transfer fluids
that are not gaseous under atmospheric pressure, the requirements for the heat
transfer fluid circuit do not belong to the scope of this part, but this part still
applies to any safety devices related to the refrigeration system. This part does
not apply to refrigeration systems using air or water as refrigerants, nor does it
include requirements for refrigeration equipment used in potentially explosive
atmospheres.
The auxiliary equipment of the refrigeration system includes:
- Fan and fan motor;
- Motor and transmission mechanism of open compressor.
This part specifies the requirements related to fixed and mobile refrigeration
systems (including heat pumps) of various sizes.
This part is not applicable to systems using refrigerants not listed in Appendix
D of Part One of this standard, as long as the safety groups of these refrigerants
have not been determined.
The basic safety requirements for refrigeration systems in Part 1 of this
standard are also applicable in this part.
Part 3 of this standard also applies to the basic requirements of the installation
site.
This part does not apply to refrigeration systems and heat pumps manufactured
before the date of publication of this standard.
supply failures, control loop failures, takeover errors, etc.
5 Safety requirements and measures
5.1 General safety and environmental requirements
5.1.1 Overview
Safety and environmental requirements are given in 5.2 and clause 6 of this
part.
5.1.2 Hazard to people, property and environment
The design and construction of the refrigeration system and its components
shall strive to eliminate possible hazards to people, property and the
environment. The method of intentionally discharging refrigerant shall not cause
harm to persons, property and the environment and shall comply with relevant
laws and regulations.
5.2 Safety requirements for components and piping
5.2.1 General requirements
Components and piping shall comply with relevant standards.
5.2.2 Special requirements
5.2.2.1 Overview
In addition to the requirements of clause 5.2.1, the special components and
piping of the refrigeration system shall meet the following requirements.
5.2.2.2 Tightness
If the test method is not given in the standard of the component, the test method
applicable to the component and refrigerant shall be adopted to ensure its
tightness, see clause 6.3.4 for details.
If necessary, some or all tests of the components may be carried out, see 6.3.
The tightness test shall be carried out after the components have passed the
pressure resistance test or type test verification.
5.2.2.3 Piping joints
Piping joints must not be damaged by external freezing. They shall be suitable
for pipes, piping materials, pressure, temperature and fluid.
b) Steel, cast steel, carbon steel and low alloy steel
Steel, cast steel, carbon steel and low-alloy steel can be used for
components containing refrigerants, as well as heat transfer medium
circuits. Where low temperature and high pressure occur at the same time,
or where there is a risk of corrosion and/or thermal stress, steel with
appropriate impact strength shall be used, but attention shall be paid to its
thickness, minimum working temperature, fusion welding characteristics.
c) High alloy steel
Where low temperature and high pressure occur simultaneously, or where
there is a risk of corrosion and/or thermal stress, high-alloy steel may be
required. If necessary, the impact strength shall be adapted to the special
load, meanwhile the material shall be suitable for fusion welding.
d) Stainless steel
When using stainless steel, care shall be taken to ensure that the grade of
stainless steel is compatible with the fluid used and the impurities (such as
NaCl, H2SO4) that may exist in the environment.
5.3.1.3 Non-ferrous materials and their alloys (cast, forged, rolled, drawn)
The material of the components shall be suitable for the specified temperature
and pressure range; they can only be used with compatible refrigerants.
a) Copper and copper alloys
The copper in contact with the refrigerant shall be oxygen-free copper or
non-oxidized copper.
Copper and alloys with a high copper content shall not be used for parts
containing R717, unless their compatibility has been confirmed by tests or
experience.
b) Aluminum and aluminum alloy
The aluminum used in the gasket in the R717 system must not be less
than 99.5% pure. Aluminum alloys with a magnesium content of more than
2% shall not be used in halogenated refrigerants, unless their compatibility
has been confirmed by tests or experience.
Aluminum and aluminum alloys must not be used in contact with R40
(CH3Cl).
Note: As long as the strength of aluminum and aluminum alloy is appropriate and
compatible with the refrigerant and lubricating oil used, they can be used in any
- Pressure for test cycle: High pressure value shall not be less than 0.7 x
PS; low pressure value shall not be greater than 0.2 x PS. For the water
heat exchanger in the heat pump, the high pressure value shall be 0.9 x
PS.
- The test pressure of the last cycle shall be increased to 1.4 x PS (2 times
0.7 x PS); for the water heat exchanger in the heat pump, it shall be 1.8
x PS (2 times 0.9 x PS).
During the test, the components shall not crack, burst or leak.
Take 3 test pieces (not used for fatigue test) for pressure resistance test
with test pressure of 2 x PS. During the test, the components shall not
crack, burst or leak.
5.3.3 Marking
Various parts do not require special marking.
5.3.4 Document preparation
The following files of the component shall be provided:
a) Test results;
b) According to the requirements of 5.3.1, test certificates of materials shall
be provided, to ensure that the materials used are consistent with the
required specifications;
c) Any required certificates shall be signed by qualified personnel in charge
of inspection, testing and verification and be prepared by appointed
representatives;
d) The prepared document shall include the following contents:
- Maximum allowable pressure;
- Maximum allowable temperature;
- The refrigerant used;
- The oil used.
6 Requirements for assembly
6.1 Overview
The design, construction, testing, installation, documentation and marking of
refrigeration system assemblies shall meet the requirements of this clause.
The refrigeration system assembly using R 717 refrigerant shall also meet other
requirements specified in Appendix A.
The category of the assembly shall be determined in accordance with Appendix
B.
The refrigeration system shall be charged with refrigerant in the manufacturing
plant or at the installation site according to the method introduced by the
manufacturer (see 6.4.3.2).
Materials for construction, fusion welding and brazing shall be suitable to
withstand predictable mechanical stress, thermal stress and chemical stress.
They shall be compatible with refrigerants, refrigerant/oil mixtures that may
contain impurities and contaminants, heat transfer media.
6.2 Design and construction
6.2.1 Overview
All components of the refrigerant circuit assembly shall meet the requirements
of clause 5.
6.2.2 Determination of the maximum allowable pressure
6.2.2.1 Maximum allowable pressure (PS)
The determination of the maximum allowable ......