(5)
Stop all refueling, repairs on fuel and hydraulic systems, and all procedures that use flammable materials such as cleaning and de-icing fluids.
(6)
Make sure that the work area is clean and free from dust and loose
particles.
(7)
Use only approved materials to clean the components of the oxygen
system.
(8)
Make sure that there are no hydrocarbons (fuel, lubricants, solvents) in the work area.
(9)
Make sure that there are no flammable materials (paint, thinners,
cleaning solvents) in the work area.
(10)
Make sure that there are no sources of ignition (sparks, flame, smoking) in a radius of 20m (66ft) of the oxygen replenishing equipment.
(11)
Make sure that your hands, clothes, equipment and tools are all clean and free from hydrocarbons.
(12)
If possible, wear clean lint-free cotton-gloves when you touch components in the oxygen system.
(13)
Make sure that there is a good flow of air in the work area.
(14)
Make sure that the oxygen system is depressurized before you loosen or tighten connections.
(15)
Always open the manual shut-off valves on the oxygen cylinders slowly to prevent a sudden increase of temperature.
(16)
Only close the manual shut-off valves on the oxygen cylinders with your hands. Do not use force to tighten them.
(17)
The system must be flushed with oxygen when nitrogen has been used during a test.
TASK 35-00-00-960-001
Replacement of a Line in the Low Pressure Section of the Gaseous Oxygen System
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific clean lint-free cloth No specific access platform 1.6 m (5 ft. 3 in.) No specific 1 BAG - VINYL No specific 1 PLUG - BLANKING, APPROVED FOR USE WITH OXYGEN No specific 1 WARNING NOTICE
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 11-005 TRICHLOROTRIFLUORO ETHANE (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
20-21-14-911-001 Tightening Torques for Oxygen Unions 20-28-00-912-006 Electrical Bonding of Pipes 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 25-55-12-000-003 Removal of the Sidewall Panels in the AFT Cargo Compartment - FR59/FR65
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
25-55-12-400-003 Installation of the Sidewall Panels in the AFT Cargo Compartment - FR59/FR65
35-00-00-860-001 Special precautions when working on a Gaseous Oxygen System
35-23-00-790-002 Leak Check of Components in the Distribution Network of the Oxygen System
52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump
52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump
3. Job Set-up__________
Subtask 35-00-00-861-050
A. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 35-00-00-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU OXYGEN/PASSENGER/CTL AND WARN 2WR HA03 49VU OXYGEN/PASSENGER/CTL AND WARN 1WR HA02
Subtask 35-00-00-941-050
C. Put a WARNING NOTICE in position in the cockpit to tell persons not to operate the emergency oxygen system.
Subtask 35-00-00-010-051
D. Get Access
(1)
Open the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-001).
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