544-545 / 975
Copyright © 2002 - 2014 Risknowlogy®. All rights reserved. v4
®
What is a Proof Test
‣
A way of finding undetected, dangerous failures
‣
With “demand” mode systems ….
‣
you can run all day with a dangerous fault
‣
you don’t know it
‣
until the day you needed it to work
‣
As near as you can, simulate a demand
‣
Which means you need to know what it is supposed to do
‣
Frequency of Proof Testing is decided by your dangerous undetected failure rate
4