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BS EN ISO 10497:2022

BS EN ISO 10497:2022

$142.49

Testing of valves. Fire type-testing requirements

Published By Publication Date Number of Pages
BSI 2022 28
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This document specifies fire type-testing requirements and a fire type-test method for soft- and metal-seated isolation valves with one or more obturators. It is not applicable to the testing requirements for valve actuators other than manually operated gearboxes or similar mechanisms when these form part of the normal valve assembly. Other types of valve actuators (e.g. electrical, pneumatic or hydraulic) can need special protection to operate in the environment considered in this valve test, and the fire testing of such actuators is outside the scope of this document. This document specifies the measurement and assessment criteria for: a) through-seat leakage; b) external leakage; c) cavity overpressure relief of double-seated valves; d) operability. This document specifies the rules whereby the fire-type testing qualification for a valve can be extended to untested sizes, pressure ratings and materials of construction of the same basic design type. Fire test reports of valves tested according to previous editions of this document are acceptable when submitted together with the full and compliant fire test report as per 6.7 of the edition under which it was tested. Any data missing as required from 6.7 within the fire test report are accepted or rejected at the purchaserā€™s discretion. NOTE       For the purposes of this document, the terms ā€œfire type-testā€ and ā€œfire testā€ are synonymous.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Test conditions
4.1 Direction and conditions for valves to be tested
4.2 Pressure relief provision
12 5 Fire test method
5.1 General warning
5.2 Principle
5.3 Apparatus
5.3.1 General
13 5.3.2 Specific apparatus
5.4 Test fluid
14 5.5 Test fuel
5.6 Procedure
19 6 Performance
6.1 General
6.2 Through-seat leakage during burn period
6.3 External leakage during burn and cool-down periods
6.4 Low-pressure test through-seat leakage after cool-down
20 6.5 Operability
6.6 External leakage following operational test
6.7 Test report
22 7 Qualification of other valves by representative size, pressure rating, design considerations and materials of construction
7.1 General
7.2 Design considerations
23 7.3 Materials of construction
24 7.4 Decisions by purchaser
7.5 Qualification of valves by nominal size and pressure rating
25 8 Special marking
26 Bibliography

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BS EN ISO 10497:2022
$142.49