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GB/T 38109-2019 English PDF (GBT38109-2019)

GB/T 38109-2019 English PDF (GBT38109-2019)

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GB/T 38109-2019: Application guidance for safety accessories and instruments on pressure equipment

This Standard specifies the basic requirements for selection principles and settings of safety accessories and instrument for pressure equipment such as pressure vessels, industrial pipelines, etc. This Standard is applicable to the safety accessories and instruments such as pressure relief devices, emergency shutoff devices, etc. for the pressure equipment like pressure vessels, industrial pipelines, etc.
GB/T 38109-2019
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 13.240
J 74
Application Guidance for Safety Accessories
and Instruments on Pressure Equipment
ISSUED ON: OCTOBER 17, 2019
IMPLEMENTED ON: MAY 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 General Requirements ... 5
5 Selection Principles ... 6
6 Setting Basic Requirements ... 7
Application Guidance for Safety Accessories
and Instruments on Pressure Equipment
1 Scope
This Standard specifies the basic requirements for selection principles and settings of safety accessories and instrument for pressure equipment such as pressure vessels, industrial pipelines, etc.
This Standard is applicable to the safety accessories and instruments such as pressure relief devices, emergency shutoff devices, etc. for the pressure equipment like pressure vessels, industrial pipelines, etc.
This Standard is not applicable to the following pressure equipment:
--- Boiler, gas cylinder, oxygen chamber, non-metallic pressure equipment; --- Pressure equipment of military equipment and nuclear facilities;
--- Aerospace vehicles, railway locomotives, offshore installations, and pressure equipment for ship and underground in mines.
2 Normative References
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document.
TSG 21 Supervision Regulation on Safety Technology for Stationary Pressure Vessel
TSG D0001 Pressure Pipe Safety Technology Supervision Regulation for
Industrial Pressure Pipe
TSG R0005 Supervision Regulation on Safety Technology for Transportable Pressure Vessel
instruments shall meet the requirements of relevant safety technical specifications. 4.3 The type test items specified in safety technical specifications and product standards shall be conducted type test by the inspection agency approved by the special equipment safety supervision and management department; and obtain the type test report and certificate.
4.4 When leaving the factory, the safety accessories and instruments shall be provided with quality certificate documents; and shall be identified or marked on the obvious part of the products.
4.5 The pressure parts of safety accessories and instrument shall meet the requirements for the use of the pressure equipment. The materials that may come into contact with the fluid medium shall be considered for compatibility with the medium. 4.6 Safety accessories and instruments can be connected the pressure equipment by thread, welding or flange. The joints shall be safe and reliable; and have good sealing performance.
4.7 For the safety accessories and the instruments with electrical control components, the protection level and explosion-proof requirements of electrical components shall conform to the provisions of relevant standards.
4.8 The accuracy and range of the instruments shall meet the requirements for use; and the instruments that need to be verified shall obtain the qualified and valid verification certificate.
5 Selection Principles
5.1 The selection of safety accessories and instruments shall conform to the provisions of safety technical specifications such as TSG21, TSG D0001, TSG R0005 and related standards.
5.2 When selecting safety accessories and instruments, at least the following factors shall be considered:
a) Type and working conditions for use of pressure equipment;
b) Type, toxicity and hazardous properties of the carrier medium;
c) Failure mode of the pressure equipment;
d) Failure mode of safety accessories and instruments.

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