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Crude Storage Tank Gauging & Vapor Recovery Checklist
このチェックリストは英語版です。
Verify safe manual and automatic tank gauging, overfill prevention, and vapor recovery unit performance for crude oil and condensate storage tanks to control losses and emissions.
API MPMS Ch. 3.1AAPI MPMS Ch. 18.240 CFR 60 Subpart OOOOaAPI STD 2350
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Gauging Procedures & Accuracy
- Is tank liquid level determined by an approved manual or automatic tank gauging method with documented procedures? *
- Are automatic tank gauges verified against manual innage/outage checks at the required frequency? *
- Are temperature and water cut (free water) measured for net volume determination? *
- Are gaugers trained on hazards of manual thief-hatch gauging, including hydrocarbon vapor exposure? *
Overfill Prevention
- Is an overfill prevention system (level alarms/automatic shutdown) installed and functional? *
- Are high-level and high-high-level alarm set points defined and periodically proof-tested? *
- Date of the most recent overfill alarm/shutdown proof test. *
Thief Hatches & Pressure Relief
- Are thief hatches and pressure-vacuum vents closed, seated, and inspected to prevent uncontrolled venting? *
- Are hatch gaskets and PV valve set points verified against the tank design pressure? *
- Are hatches confirmed closed during normal operation via inspection or monitoring? *
Vapor Recovery & Emissions Control
- Is a vapor recovery unit (VRU) or control device routing tank vapors and operating within design capacity? *
- Is the control device (VRU, flare, or combustor) maintaining the required control efficiency (e.g., 95%)? *
- Are storage vessel potential-to-emit VOC determinations documented to confirm applicability of controls? *
- Are inspection and maintenance records for the vapor control system retained? *
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