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a suitable microwave energy absorbing shield is fitted over the antenna.
6.2.5 The equipment is not to be operated in any aircraft which is being refuelled or
defuelled.
Note: During all testing of aircraft radar equipment the beam should, whenever possible, be
directed with maximum upward tilt toward a clear area.
Issue 7: 8 December 2004
Amdt No. 213
SECTION 20.9 -10-
Issue 7
APPENDIX I
FIRE SAFETY REQUIREMENTS TO BE MET BY MECHANICAL AND
ELECTRICAL EQUIPMENT WITHIN 15 METRES (50 FT) OF AN
AIRCRAFT'S FUEL TANK FILLING POINTS AND VENT OUTLETS
DURING FUELLING OPERATIONS
1 APPLICATION
1.1 The requirements of this Appendix are applicable to all mechanical and
electrical equipment used within 15 metres (50 ft) of an aircraft’s fuel tank
filling points and vent outlets during fuelling operations.
1.2 Compliance with these requirements is the responsibility of the operator of the
equipment.
2 VEHICLES AND PLANT
Note: Because a higher standard of safety can be more readily achieved on diesel engines
than petrol engines, it is recommended that diesel engines be used on all vehicles, pumping
plants, etc., used within 15 metres (50 ft) of an aircraft’s fuel tank filling points and outlet
vents during fuelling operations.
2.1 All equipment shall be of good automotive design, and shall receive proper
maintenance to ensure that it is kept in good state of repair. All reasonable
means shall be taken to limit the hazard from fire. Particular attention shall be
given to possible sources of ignition such as:
(a) incandescent carbon or naked flame which could be emitted from the
engine or associated equipment; and
(b) arcing between metallic parts of electrical circuits and components caused
by:
(i) operation of switch contacts; and
(ii) faulty cable terminations; and
(iii) breakdown of electrical insulation; and
(iv) moving contacts or rotary electrical equipment; and
(v) accidental short circuiting or open circuiting; and
(c) exposure of hot parts to combustible matter; and
(d) overheating of working parts to the ignition temperature of any
combustible matter in the vicinity of the engines.
2.2 Parts of the equipment requiring attention are:
(a) fuel system; and
(b) exhaust system; and
(c) electrical system.
Issue 7: 8 December 2004
Amdt No. 213
-11- SECTION 20.9
Issue 7
2.2.1 Fuel system
The carburettor air intake shall be fitted with a flame arrestor, such as a
backfire non-return valve, or an efficient baffled and screened air cleaner.
The fuel tank shall be securely mounted, and the tank and its filler shall be
positioned so that fuel cannot be inadvertently spilled on the engine, its
exhaust, electrical and ignition system.
Fuel tank filling openings shall be fitted with well fitting caps.
Liquefied petroleum gas systems shall comply with Australian Standard 1425
and Australian Standard CB20, but excess flow valves and non-return valves
shall be fitted irrespective of size of tank.
2.2.2 Exhaust System
The exhaust system shall be provided with means to prevent hazardous
emission of incandescent carbon or naked flame. Baffled standard vehicle
mufflers, of good automotive design, and in good condition are acceptable.
2.2.3 Electrical System
Standard vehicle wiring shall be maintained in good condition. All additional
equipment such as obstruction lights, shall have wires and cables well
supported, with insulating grommets fitted wherever they pass through metal
panels. Equipment shall be suitably insulated and mechanically protected to
prevent breakdown during use.
Batteries shall be suitably covered to prevent accidental shorting of cells and
shall be provided with adequate means of natural ventilation.
3 Fuelling Vehicles and Plant
Aircraft fuelling vehicles and plant shall comply with the following:
(a) be fitted with an isolation switch between the battery and electrical
services;
(b) the engine exhaust outlet to be remote from the fuelling equipment;
(c) all electrical wiring to the rear of the vehicle cab shall be mechanically
protected;
(d) exposed electrical terminals shall be protected by insulating boots or
covers;
(e) generators, motors, switches and relays shall be of a type which will
prevent emission of hazardous sparks.
Issue 7: 8 December 2004
Amdt No. 213
SECTION 20.9 -12-
Issue 7
4 ELECTRICAL EQUIPMENT
4.1 Equipment above Ground level
All fixed and portable electrical equipment (other than vehicular) shall be of
the same requirements as the SAA requirements as for equipment operated in
Class 1, Division 2 locations, as specified in the SAA Wiring Rules, Part 1,
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