BVAA Hot Spot ISO DIS 10497 Testing of Valves - Fire Type Testing Requirements

What is it?

This is a proposed revision to one of the core fire test standards that has now reached the draft standard ballot stage. The main changes are to:


• Make the monitoring of cavity pressure during testing for double-seated valves mandatory; tests to previous editions are acceptable if supported by a supplementary overpressure cavity test to demonstrate relief performance;
• Allow qualification of valves with more than one obturator (a qualified assembly is where all obturators have been qualified singly);
• Clarify and update the qualification of other valves by “materials of construction” and inclusion of a new “design” clause.

Why is it Important?
Fire testing is a significant and expensive element of valve qualification. Many manufacturers will have a legacy of many years of fire tests already performed. Substantial costs could be incurred if these have to be repeated due to changes in the requirements. If any BVAA members have any comments, or would like to participate in discussions by joining the BVAA Fire Test TEG, please contact the BVAA secretariat before 16-07-21.


Supersedes
When changes are finalised, ISO 10497:2010 will be replaced.


Continuous Improvement: Did we miss anything?
Hot Spots are intended to alert members and provide a brief overview of new standards, activities or procedures that are being introduced in the industry. If there is key information missing that would be helpful, please let us know so that we can improve our future service.

Please note: this Hotspot is for information purposes only. We invite comments from BVAA members only. Please also note that at time of publication ballots may be closed. For more information please contact the Secretariat: enquiry@bvaa.org.uk


Published: 1st July 2021

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