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.