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GB 567.4-2012: [GB/T 567.4-2012] Bursting disc safety devices -- Part 4: Type test
GB 567.4-2012
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.240
J 74
Bursting Disc Safety Devices -
Part 4. Type Test
ISSUED ON. MAY 11, 2012
IMPLEMENTED ON. MARCH 1, 2013
Jointly Issued by. General Administration of Quality Supervision,
Inspection and Quarantine;
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 ... 5 
4 Burst Pressure Testing ... 6 
5 Flow Capacity Testing ... 10 
6 Fatigue Testing ... 18 
7 Flow Resistance Testing ... 21 
8 Uncertainty Of Measurement ... 31 
Appendix A (Informative) Table of Test Records and Test Results ... 33 
Foreword
Appendixes A and B of this Part are recommendatory; the rest are mandatory.
"Bursting Disc Safety Devices" (GB 567) is divided into 4 parts.
— Part 1. Basic requirement;
— Part 2. Application, selection and installation;
— Part 3. Classification and mounting dimensions;
— Part 4. Type test.
This Part is Part 4 of GB 567.
This Part was drafted according to the rules specified in GB/T 1.1-2009.
This Part was proposed by and shall be under the jurisdiction of the National
Technical Committee on Boilers and Pressure Vessels of Standardization
Administration of China (SAC/TC 262).
Chief drafting organizations of this Part. Shenyang Institute of Special Equipment
Inspection and Research, Shanghai Gas Industry Association, China Special Equipment
Inspection and Research Institute, Shanghai Huayi Engineering Co., Ltd., Bureau of
Safety Supervision of Special Equipment (SESA) of AQSIQ, Shenyang Aerospace
Xinguang Security Systems, Inc., Dalian Ligong Safety Equipment Co., Ltd., Chengdu
Chenghang Industrial Safety System Co., Ltd., Shanghai Huali Safety Device Co.,
Ltd., and Shanghai Institute of Special Equipment Inspection and Technical Research
Chief drafting staffs of this Part. Zhang Zhiyi, Xu Ziping, Song Xuxian, Zhou Weiming,
Shou Binan, Gao Jixuan, Chen Chaohui, Liu Duo, Han Fengjuan, Li Yue, Xiang
Dongliang, Yang Xiuxia, Wang Zhenggang, Xu Weipu, and Wei Yongbiao.
Bursting Disc Safety Devices -
Part 4. Type Test
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. Phenomenon that is generated very differently from the common burning and explosion
when the burning rate of the material is quickly, above 1 000m/s, is known as detonation.
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 P art 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
The test that verifies the operating performance of bursting disc safety devices to
determine their bursting pressure at designate temperature.
3.2
Flow capacity testing
The test that determines the operating characteristics of bursting disc safety devices
and measures their discharge capacity under corresponding pressure.
3.3
Theoretical relieving (discharge) capacity
The discharge capacity that is calculated according to the ideal nozzles of net flow
area, expressed by weight or volume per unit time.
3.4
Measured relieving (discharge) capacity
The discharge capacity of bursting disc safety devices that is measured under relief
pressure, represented by discharge weight or volume per unit time.
3.5
Coefficient of discharge
4.3.2 Temperature measurement
Thermocouple, thermal resistance or other devices that are able to accurately
measure the bursting disc temperature shall be adopted to measure the test
temperature of the bursting disc. The resolution of the temperature measuring
instruments shall not be below 0.5°C. All the leading wires and transmitters or
instruments shall be covered when calibrated.
4.3.3 Pressure measurement
The pressure measurement point shall be as close as possible to the tested bursting
disc. Pressure gauge or pressure transmitter whose accuracy grade is not below 0.4
and measuring range is 1.5~3 times of the test pressure value shall be adopted.
4.4 Test conditions and test preparation
4.4.1 Test medium
In general, the test medium shall be compressed air, water or hydraulic oil. However,
the test medium under high pressure or high temperature shall be nitrogen, hydraulic
oil or heat-transfer oil.
4.4.2 Test preparation
Test preparation shall meet the following requirements.
a) Check and make sure the burst pressure test device is in normal condition.
The accuracy and measuring range of the measuring instruments and sensors
are in coinciding with the parameters of the test disc;
b) Conduct preliminary test to ensure that the burst pressure test device be able
to reach the test requirements and make the operation personnel get fully
aware of the concrete test details;
c) All the process of the actual test shall be covered in the preliminary test and
the necessary data shall be recorded and the instruments and sensors shall
be calibrated.
4.5 Test rules
4.5.1 Sampling
Sampling of bursting discs for test shall be selected at random from the same lot in
the lot production; the number of samples shall be 4.
4.5.2 Test number
Randomly select 3 pieces from the sampled bursting disc devices for burst pressure
testing.
4.5.3 Test temperature
4.5.3.1 Where the test temperature of bursting discs is normal, the test temperature
shall be controlled within (15-30) °C.
4.5.3.2 Where the test temperature of the bursting disc is a little higher or lower, the
permissible...