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except that arc-producing devices such as switches, contactors, etc., which are
not operated during fuelling or defuelling operations need not to conform to the
requirements for this class of equipment. The controls of all arc-producing
devices which do not meet the requirements for Class 1, Division 2 locations
shall be clearly labelled so that there is no doubt that they are not to be
operated during fuelling operations.
4.2 Equipment below Ground level
Electrical equipment located below the general ground level of the apron (such
as apron power outlets, pump control switches, etc.) shall comply with the
SAA requirements for equipment operated in Class 1, Division 1 locations.
4.3 Cables
(a) All cables carrying electrical current at potentials up to 250 volts with
respect to earth shall be required to have 250 volt grade insulation and
shall be protected by a plastic sheath resistant to attack by fuel and oil.
(b) All cables situated in areas traversed by vehicles, hand-carts and the like
shall be suitably protected against mechanical damage. In no case shall
this protection be of a lower standard than that provided by hardwood
troughing with the dimensions by 2W and 3D where W and D are
respectively width and depth of the cable space where W is not less than
D.
(c) Where the use of trailing cables is permitted as a temporary measure, The
appropriate placement of wooden or other suitable portable barriers may
be used as an alternative to wooden troughing described in paragraph
4.3 (b) to guard against damage by vehicles and to ensure the safety of
pedestrians.
4.4 Protective Devices
All fuses and overload protective devices shall be hermetically sealed and
protected by a general purpose enclosure.
4.5 Batteries
All batteries shall be suitably covered to prevent accidental shorting of cells
and shall be provided with adequate means of natural ventilation.
4.6 Protection from Breakdown in Service
(a) All electrical equipment shall be suitably insulated and mechanically
protected to prevent breakdown whilst in use.
(b) All connections shall be secured with spring or lock washers to prevent
accidental loosening of connections whilst in use.
Issue 7: 8 December 2004
Amdt No. 213
CIVIL AVIATION ORDERS
PART 20
SECTION 20.10
Issue 2
HOT REFUELLING — HELICOPTERS
SUBSECTIONS
1 Meaning of hot refuelling
1A Application
2 Operator’s responsibilities
3 Responsibilities of pilot in
command
4 Procedures and equipment
5 Fuel loading
6 Radio transmissions
7 Inspection and testing of fuel
system
1 MEANING OF HOT REFUELLING
1.1 In this section, hot refuelling means the refuelling of a helicopter with its
engine or engines running.
1.2 Hot refuelling of a helicopter may take place with its rotor or rotors rotating.
1A APPLICATION
1A.1 The hot refuelling of helicopters must be carried out in accordance with:
(a) the requirements set out in section 20.9 other than the requirements set out
in paragraphs 4.1.1.1, 4.3.1, 4.3.8, 4.4.1, 4.5.1 and 5.1.4; and
(b) this section.
Note: Operators and pilots should note that the provisions of paragraph 5.1 of section 20.2
of the Civil Aviation Orders relating to the inspections and tests for the presence of water in
an aircraft’s fuel system before the start of each day’s flying are applicable to helicopters to
which this section applies.
2 OPERATOR’S RESPONSIBILITIES
2.1 Hot refuelling of a helicopter must not be carried out unless authorised by its
operator.
2.2 Before authorising the hot refuelling of a helicopter, the operator must be
satisfied that the refuelling can be carried out safely and, in particular, must
have regard to:
(a) the configuration of the helicopter and its engine or engines; and
(b) the location of the components of the helicopter’s fuel system; and
(c) the refuelling system or systems to be used and its or their components;
and
(d) the helicopter’s flight manual.
Issue 2: 8 December 2004
Amdt No. 214
SECTION 20.10 -2-
Issue 2
2.3 The operator of a helicopter who authorises hot refuelling of that helicopter
must include in the operations manual:
(a) the operational circumstances in which hot refuelling may take place; and
(b) the procedures to be followed during hot refuelling; and
(c) the requirements and instructions, if any, set out in the helicopter’s flight
manual that relate to hot refuelling; and
(d) if applicable, the instructions to ensure fuel quality as required for the
purposes of subparagraph 7.2 (b).
2.4 The operator must set out the matters referred to in paragraph 2.3 separately in
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