I am having a discussion with out Mechanical Integrity engineer about the need to pressure test the pressure relief devices on our oil filled transformers. He wants to know if we can raise the pressure on a transformer, to measure the pressure that the pressure relief device opens. I have never heard of anyone routinely testing these devices on transformers, and I question the need to do so. He is looking at it from the standpoint that we have a tank, with a pressure relief device, and a means to generate pressure. (Transformer fault) He wants to add these devices to the testing program with all of the other pressure relief devices in the plant. Is anyone doing this? Also, does anyone routinely test their sudden pressure switch on their transformers? Not sure how you would do it. I have not told him about the SP switches yet. Would like some discussion on this topic from the group. Thanks.
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