Trial 2 overview of oil handling operations mc cord pipeline
- 1. McMhord Pipeline OVERVIEW OF OIL HANDLING OPERATIONS
- 2. Training Goals To learn the basic description and characteristics of the pipeline Understand the leak detection and monitoring systems Overview key maintenance components on the pipeline
- 3. Description Starts at pump station near jet fuel tanks 30002 and 30003 Ends at the Air Force Base fuel depot Length is 14.25 miles long Diameter 6’’
- 4. Description Isolation Valves are located at mile post 2.5 5.1 and 10.0 Valves are generally only operated on during pipeline maintenance activities Overpressure protection of the pipeline by pressure relief valves located along the pipeline Pressure relief valves are small ¾” thermal relief valves designed to protect the system from thermal expansion over-pressurization
- 5. Description The receiving facilities at the air base are protected from excessive transfer pump pressure by a reverse check valve that automatically closes if the transfer line pressure at the air force base exceeds 120 psi This will shut down the pipeline transfer pumps The pumps are designed to shut down in case of high vibration, low pipeline pressure, and additive injection malfunction.
- 6. Leak Detection Monitoring key variables for both the jet fuel transfer mode and the static mode During transfer operations, the key leak detection variable is the jet fuel transfer volume difference Measured at the refinery pump station and at the air force base
- 7. Leak Detection Shut down the transfer and immediately check the pipeline operation if the volume difference exceeds 2,000 gallons The U.S. Oil pump station monitors the pressure and alarms conditions occur for any pressure drop exceeding 15 psi A drop in pressure will trigger an immediate check of the jet fuel volumes transferred.
- 8. Monitoring Mode Monitoring the static pressure of the line Isolated at both ends and maintained at a minimum of 200 psi Unexplained pressure drop in excess of 15 psi will result in an alarm
- 9. Pipeline Maintenance The Cathodic Protection System- Equipped with an impressed current cathodic protection system for the entire length of the pipeline Key system components consist of a rectifier, well-type anodes, and cabling necessary to connect the system components. Periodic testing is required to determine if the cathodic protection is optimized for best performance.
- 10. Pipeline Maintenance If the system is under-protected, corrosion damage could occur, while over-protection could result in damage to the protective coating on the pipeline A complete history of the system in the form of records and previous measurements, along with a complete set of schematics of system components provide a baseline for comparison to future measurements and are useful in troubleshooting any system problems
- 11. Review Starts at pump station near jet fuel tanks 30002 and 30003 Ends at the Air Force Base fuel depot Length is 14.25 miles long Diameter 6’’ Monitoring key variables for both the jet fuel transfer mode and the static mode During transfer operations, the key leak detection variable is the jet fuel transfer volume difference Measured at the refinery pump station and at the air force base The Cathodic Protection System- Equipped with an impressed current cathodic protection system for the entire length of the pipeline Key system components consist of a rectifier, well-type anodes, and cabling necessary to connect the system components. Periodic testing is required to determine if the cathodic protection is optimized for best performance.