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Definition
→ installed on outlets of all pressurized process vessels to prevent back flow
→ permits flow in only 1 direction (fm inlet to outlet)
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Term
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Definition
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Term
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Definition
| detect fire in close proximity to process components and are also connected to the ESD system to provide the same results as an ESD Shut-In occurrence |
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Term
• Production Process Equipment
• Compressors and Pumps
• Pipeline SDV
• All Wellhead SSVs |
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Definition
Within 45 seconds of an ESD activation the following 4 needs to shut in following: |
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Term
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Definition
| has failed to operate properly or is in By-Pass mode of operation if the Liquid Overflow condition occurs |
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Term
1. Operator opens a bypass valve around LCV
2. Level Control Valve (LCV) fails in open position |
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Definition
| 2 Common Causes of Gas Blowby: |
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Term
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Definition
| discharge of gas from a process component through a liquid outlet. |
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Term
| Indirect Heated Component |
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Definition
- vessel or heat exchanger used to increase the temperature of a fluid by transfer of heat from another fluid, such as steam, hot water, hot oil, engine exhaust, or other heated medium. |
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Term
| Direct Ignition Source (Fired Components) |
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Definition
| point of sufficient temperature and heat capacity to ignite a combustible mixture such an an exposed surface, a flame or a spark |
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Term
| Temperature Safety Elements (TSEs) |
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Definition
| must be installed on all components |
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Term
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Definition
- Actuation of this must shutdown all Engine driven components, due to the TSEs melting or ASH detecting 60% of the LEL |
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Term
Emergency Support Systems (ESS) |
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Definition
Secondary protection from all detectable leaks and small gas
leaks in an inadequately ventilated area should be provided by |
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Term
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Definition
- Primary protection from leaks of sufficient rate to create an abnormal operating condition within a pressure component should be provided by _____ sensor to shut off inflow & _____ to minimize backflow.
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Term
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Definition
________ sensor should be installed at the highest practical location on the component to the minimize the chances of
fouling by flow stream contaminants |
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Term
| Level Control Valve (LCV) |
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Definition
Gas blow-by can be caused by failure of a liquid level control system or the inadvertent opening of a By-Pass Valve around a _________ |
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Term
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Definition
primary protection from under-pressure in an atmospheric
component should be provided by an _________ |
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