ISO 15500-13:2023
Road vehicles — Compressed natural gas (CNG) fuel system components — Part 13: Pressure relief device (PRD)
This document specifies tests and requirements for the pressure relief device (PRD), a compressed natural gas (CNG) fuel system component intended for use on the types of motor vehicles defined in ISO 3833.
This document is applicable to vehicles (mono-fuel, bi-fuel or dual-fuel applications) using natural gas in accordance with ISO 15403-1.
It is not applicable to the following:
a) liquefied natural gas (LNG) fuel system components located upstream of, and including, the vaporizer;
b) fuel containers;
c) stationary gas engines;
d) container-mounting hardware;
e) electronic fuel management;
f) refuelling receptacles.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Marking
5 Construction and assembly
6 Tests
6.1 Applicability
6.2 Hydrostatic strength
6.2.1 Housing
6.2.2 Fusible material
6.3 Leakage
6.4 Bending moment
6.5 Continued operation
6.5.1 Test procedure
6.5.2 Requirements
6.6 Accelerated life
6.6.1 General
6.6.2 Test procedure
6.6.3 Accelerated-life test temperature
6.6.4 Requirements
6.7 Benchtop activation
6.7.1 General
6.7.2 Thermally-activated relief devices
6.7.3 Series-combination relief devices
6.7.4 Parallel-combination relief devices
6.8 Thermal cycling
6.8.1 Test procedure
6.8.2 Requirements
6.9 Condensate-corrosion resistance
6.9.1 Test procedure
6.9.2 Test solution
6.10 Flow capacity
6.10.1 General
6.10.2 Test procedure
6.11 High-pressure activation and flow rate
6.11.1 General
6.11.2 Test setup
6.11.3 Test procedure
6.11.4 Acceptable results
6.11.5 Data analysis and availability
6.12 Water jet protection
6.12.1 General
6.12.2 Method of test
6.12.3 Acceptance criteria
6.13 Impact due to drop
7 Production batch inspection and acceptance testing
Annex A (normative) Determination of fusible material yieldtemperature and PRD activation temperature
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Marking
5 Construction and assembly
6 Tests
6.1 Applicability
6.2 Hydrostatic strength
6.2.1 Housing
6.2.2 Fusible material
6.3 Leakage
6.4 Bending moment
6.5 Continued operation
6.5.1 Test procedure
6.5.2 Requirements
6.6 Accelerated life
6.6.1 General
6.6.2 Test procedure
6.6.3 Accelerated-life test temperature
6.6.4 Requirements
6.7 Benchtop activation
6.7.1 General
6.7.2 Thermally-activated relief devices
6.7.3 Series-combination relief devices
6.7.4 Parallel-combination relief devices
6.8 Thermal cycling
6.8.1 Test procedure
6.8.2 Requirements
6.9 Condensate-corrosion resistance
6.9.1 Test procedure
6.9.2 Test solution
6.10 Flow capacity
6.10.1 General
6.10.2 Test procedure
6.11 High-pressure activation and flow rate
6.11.1 General
6.11.2 Test setup
6.11.3 Test procedure
6.11.4 Acceptable results
6.11.5 Data analysis and availability
6.12 Water jet protection
6.12.1 General
6.12.2 Method of test
6.12.3 Acceptance criteria
6.13 Impact due to drop
7 Production batch inspection and acceptance testing
Annex A (normative) Determination of fusible material yieldtemperature and PRD activation temperature
Bibliography