LNG ON-BOARD FUEL STORAGE AND DELIVERY SYSTEMS *

For every task in LNG On-Board Fuels Storage and Delivery Systems, the following safety requirement must be strictly enforced: Comply with personal and environmental safety practices associated with clothing; eye protection; hand tools; power equipment; proper ventilation; and the handling, storage, and disposal of chemicals/materials in accordance with local, state, and federal safety and environmental regulations.

XI. LNG ON-BOARD FUEL STORAGE AND DELIVERY SYSTEMS

A. DIAGNOSIS AND REPAIR

1. Interpret and verify complaint; establish a strategy for diagnosis and repair. P-1

2. Identify and inspect filler nozzle and receptacle; repair or replace as needed. P-1

3. Identify and inspect fill check valve; repair or replace as needed. P-2

4. Identify and inspect fuel shut-off valve; repair or replace as needed. P-1

5. Identify and inspect excess flow valve; repair or replace as needed. P-1

6. Identify and inspect safety relief valves; replace as needed. P-1

7. Identify and inspect pressure gauge; replace as needed. P-1

8. Identify and inspect economizer/regulator; repair or replace as needed. P-1

9. Identify and inspect manual vent circuit; repair or replace components as needed. P-1

10. Identify, test, and inspect cryogenic pump and components; repair or replace as needed. P-2

11. Identify and inspect vaporizer/heat exchanger; repair or replace as needed. P-1

12. Diagnose incorrect vaporizer operation to include: check coolant flow, coolant routing, and check for vaporizer LNG/coolant leaks. P-1

13. Inspect fuel storage container for fuel or vacuum leaks, repair or replace as needed. P-1

14. De-fuel fuel system using industry practices or manufacturer's procedures following all local, state and federal regulations. (Local procedures may vary and extreme care must be exercised if using actual fuel. Use of inert gas or shop air is recommended for practicing this task in the classroom.) P-1

15. Prepare fuel storage container for long term inactivity. P-1

16. Disable fuel delivery and isolate components of the fuel system. P-1

17. Pressure test fuel system, check for leaks. P-1

18. Inspect all connections, fittings, hoses and tubing for damage, chaffing, leaks, routing, and mounting; repair or replace as needed. P-1

19. Inspect and test system sensors (e.g., pressure, temperature, etc.); repair or replace as needed. P-1

20. Check fuel system operating pressures and pressure differential. P-1

21. Diagnose the cause of abnormal fuel delivery. P-1

22. Diagnose the cause of inaccurate fuel level indicator reading. Differentiate between tank sender and fuel gauge problems; service, adjust, repair or replace as needed. P-1

23. Test on-board methane leak detection system, verify operation; repair or replace as needed (service may require special training and certification). P-3

24. Inspect on-board fire suppression system, verify readiness; repair or replace as needed (service may require special training and certification). P-3

XI. LNG ON-BOARD FUEL STORAGE AND DELIVERY SYSTEMS

B. MAINTENANCE

1. Inspect fuel supply container(s) and related hardware for chaffing and damage (includes brackets, fasteners and supply vent system). Visually inspect data plate according to applicable regulations. P-1

2. Identify and inspect fill components; perform necessary maintenance. P-1

3. Identify and inspect fuel shut-off valve; perform necessary maintenance. P-1

4. Identify and inspect excess flow valve; perform necessary maintenance. P-1

5. Identify and inspect vaporizer/heat exchanger; perform necessary maintenance (coolant & LNG). P-1

6. Identify and inspect safety relief valves; perform necessary maintenance. P-1

7. Identify and inspect pressure gauge; perform necessary maintenance. P-1

8. Identify and inspect economizer/regulator; perform necessary maintenance. P-1

9. Identify and inspect manual vent components; perform necessary maintenance. P-1

10. Identify and inspect cryogenic pump system (when applicable); perform necessary maintenance. P-2

11. Connect relief/vent stack piping to an appropriate outdoor location (or ventilation system). P-1

12. Operate/read portable methane detector. P-1

13. Inspect fuel system for leaks. P-1

14. Visually inspect pressure relief valves; perform necessary maintenance. P-1

15. Inspect and check manual shut-off valves; perform necessary maintenance. P-1

16. Perform safe fueling procedures and determine fuel level. P-1

17. Test on-board methane leak detection system, verify operation; repair or replace as needed (service may require special training and certification). P-3

18. Inspect on-board fire suppression system, verify readiness; repair or replace as needed (service may require special training and certification). P-3

19. Identify and inspect exhaust heat shielding; repair as needed. P-1