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5 Cards in this Set
- Front
- Back
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What does API 576 cover? |
Inspection of pressure relieving devices. |
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When are relief valves used.......and when are safety valves used? |
Relief valves: incompressible fluids (liquids). Safety valves: compressible fluids (Gases, Vapors) |
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What are pilot operated valves? |
PRD's in which the main valve is combined with and controlled by an auxiliary valve (pilot). |
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What do rupture discs do? |
Rupture discs are used to protect the PRD against corrosion or plugging due to system fluid. |
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What is visual on stream inspection, and how often must it be performed on PRD's? |
Visual on stream inspection is like a survey to check that the valve is correct, tag is correct, etc. etc. This survey shall be conducted at intervals not more than 5 years. |
