Superseding
Chinese Name	����Ƭ��ȫװ�� ��4���֣���ʽ����
English Name
Chinese Standard Classification
Professional Classification
ICS Classification
Issued on	2012-05-11
Implemented on	2013-03-01
Abolished on
Issued by	AQSIQ and SAC
Chinese Pages
Word Count	10,000 words

 1  Scope
 1.1  This Part of GB 567 specifies technical requirements for test principles and methods, test devices and instruments, test conditions and test preparation, test rules, test procedures, data processing and measurement uncertainty calculation, etc. for burst pressure testing, flow capacity testing, fatigue testing and flow resistance testing in terms of type tests of bursting disc safety devices.
 1.2  This Part is applicable to the following bursting disc safety devices:
 ——This Part is applicable to the bursting disc safety devices used for pressure vessels, pressure pipes or other sealing pressure equipment (hereinafter referred to as pressure equipment) to prevent overpressure or excess vacuum;
 ——As for the bursting discs in the bursting disc safety devices applicable in this Part, the bursting pressure shall not be greater than 500MPa and not less than 0.001MPa.
 1.3  This Part is not applicable to the following bursting disc safety devices:
 ——Pressure equipment, possible to increase pressure abruptly in the operation, reaching reaction rate at detonation degree.
 ——Bursting disc safety devices under the special requirements in the defense military equipment.
 Note: detonation: phenomena generated very differently from the common burning and explosion when the burning rate of the material is as quick as above 1 000m/s.
 2  Normative References
 The following documents are indispensable for the application of this standard. For dated references, only the dated edition is applicable to this document. For undated references, the latest editions of the normative documents (including all the amendments) are applicable to this document.
 GB 567.1 Bursting disc safety devices-Part 1 Basic requirements
 GB 567.2 Bursting disc safety devices-Part 2: Application, selection and installation
 GB 567.3 Bursting disc safety devices-Part 3: Classification and installation dimension
 GB/T 2624 Measurement of fluid flow by means of orifice plates, nozzles and Venturi tubes inserted in circular cross-section conduits running full
 GB/T 21188 Measurement of gas flow by means of critical flow Venturi nozzles
 3  Terms and Definitions
 For the purposes of this Part, the following terms and definitions as well as those established in GB 567.1, GB 567.2 and GB 567.3 shall apply.
 3.1
 Burst pressure testing
 Test verifying operating performance of bursting disc safety devices to determine their bursting pressure at designate temperature.
 3.2
 Flow capacity testing
 Test determining operating characteristics of bursting disc safety devices and measuring their discharge capacity under corresponding pressure.