Ola Energy Bole Aviation Pressure Control Procedures

Excessive air volume released when the deadman handle is released.

Increasing the rate of air bleed when the deadman handle is released.

ILPCV not controlling hose end pressure as expected.

Adjusting control air pressure for correct hose end pressure.

ILPCV failing to control surge pressure to under 120 PSI.

A procedure to verify the accuracy of the venturi pressure gauge against a calibrated test rig gauge.

The difference between the venturi gauge pressure and the test rig pressure gauge reading.

A process of adjusting, overhauling, or replacing a venturi if its pressure readings are inaccurate.

A safety system that rapidly stops fuel flow in emergencies and controls the opening of the system for fuelling.

The deadman system should quickly stop fuel flow in an emergency, but not too quickly as to cause fuel surges.

Deadman systems are performance tested monthly and annually to ensure they function correctly.

The interval between activating the deadman system and fuel flow shutdown should be no more than 2 minutes.

The highest rate at which fuel can be circulated during the deadman system testing.

An in-line pressure control valve that directly senses pressure, without any pressure loss compensation. It simply limits the pressure at the pump outlet or hose entry.

ILPCVs without compensation are not sensitive to flow rate changes. Their pressure control might not be effective at different flow rates.

For a non-compensated ILPCV, the pressure indicated on the fuel sense gauge should not exceed 3.8 bar (55 psi) over the full flow range and shall not exceed 5.5 bar (80 psi) at shutdown.

A system that uses a venturi to compensate for pressure drops in the fuel line, ensuring consistent pressure control at the aircraft even with different hose lengths or flow rates.

Venturi compensation systems can use either a non-adjustable or an adjustable venturi.

Venturi checks are required during commissioning, equipment changes downstream of the venturi, and when the ILPCV pressure control fails to meet limits.

Venturi checks ensure accurate pressure control by verifying the venturi's indication of pressure at the aircraft adaptor.

Venturi issues often arise from blocked lines or valves, loose components, changes in downstream equipment like hose length or nozzle screen mesh.