API-RP-576
API ICP Self Study Notes API ICP Self Study Notes
Fion Zhang/ Charlie Chong
Causes of damaged valve seats; 1. Corrosion 2. Debris. 3. Careless handling. 4. Valve leakage causing erosion corrosion; • Improper maintenance. • Improper installation. • Improper valve assembly. • Operating at near the valve setting. 5. Valve chattering; • Chattering due to wrong blowdown setting. • Chattering due to lengthy pipe length at inlet. • Chattering due to obstruct inlet. 6. Severe over-sizing of pressure relieve valve resulting in abrupt closing of valve. Fion Zhang/ Charlie Chong
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Causes of damaged valve seats;<br />
1. Corrosion<br />
2. Debris.<br />
3. Careless handling.<br />
4. Valve leakage causing erosion corrosion;<br />
• Improper maintenance.<br />
• Improper installation.<br />
• Improper valve assembly.<br />
• Operating at near the valve setting.<br />
5. Valve chattering;<br />
• Chattering due to wrong blowdown setting.<br />
• Chattering due to lengthy pipe length at inlet.<br />
• Chattering due to obstruct inlet.<br />
6. Severe over-sizing of pressure relieve valve resulting in<br />
abrupt closing of valve.<br />
Fion Zhang/ Charlie Chong
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