CHAPTER 28
PAGE 6
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RA - FLUGZEUGBAU GmbH
SERVICE MANUAL EXTRA 200
PAGE DATE: 1. July 1996
9 When draining fuel, ensure that suitable containers are
available and that drained fuel is stored safely. Do not
allow fuel to drip to the ground and form pools.
10 If it is necessary to ventilate a tank when the aircraft is
in hangar, ensure that vapors do not accumulate to ex-
plosive or toxic levels in the hangar.
W A R N I N G When fuel is being drained, there is little control over
the release of fuel vapor. This vapor should be dissi-
pated as quickly as possible. Compressed air or explo-
sion-proof blowers may be used for the purpose.
Air Ventilation
1 Completely drain the fuel system per Chapter 12-10-
02.
2 Remove inspection doors (refer to Chapter 28-11-03)
and tank caps.
3 Use compressed air or an explosion-proof blower to
blow air into the tank until tank interior is dry and free
of vapor.
4 Continue ventilation whenever tank is open and being
worked on.
W A R N I N G If flammable vapors from cleaning solvents are allowed
in the tank increase air circulation to dissipate them.
MAINTENANCE PRACTICES
Reduction of Fuel Tank Vapor Hazards
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