A valid permit from the
Department is required in accordance with Section 105.6
of this article, when a building or premises is used as an
aircraft fueling station, private airport, or heliport. Further,
a valid permit and general approval is required, in accordance
with Sections 105.6, 105.7 and 119 of this article,
for an aircraft fuel servicing tank vehicle designed and
operated for the purpose of fueling aircraft on the grounds
of an airport or heliport.
Whenever
welding and cutting operations are conducted on an airport
or in an aircraft factory or hangar, a special permit in
accordance with Section 105.8 shall be obtained from the
Chief and shall comply with the requirements of Chapter
35.
No person shall store
combustible materials, flammable liquids, flammable or
liquefied compressed gas cylinders (other than fire protection
equipment) or other hazardous materials in an aircraft
factory or hangar, except in hazardous materials storage
rooms or as otherwise permitted by this article.
Every aircraft factory and hangar shall be
equipped and maintained with metal drip pans under the
engines of all aircraft stored therein.
No person shall store, mix or transport a
pesticide or insecticide at any airport except in connection
with the application of such pesticide or insecticide within the
limits of airport facilities, or when such pesticide or insecticide
constitutes air freight and is stored and transported in
conformance with all applicable State and Federal regulations.
Any person conducting
aircraft servicing, maintenance, or testing of the fuel system
using the air ventilation procedures, shall reduce the
fuel tank atmosphere to below 20 percent of the lower
flammable limit of the fuel vapors. Air ventilation, as used
herein, means to pass undiluted air (air not containing
flammable vapors) through an aircraft fuel tank to render
the atmosphere of the tank below the lower flammable
limit of the fuel vapors involved. Before any inspection or
work is performed, tests by a qualified person shall be
conducted to determine that the presence of flammable
vapors in or around the fuel tank does not constitute a fire
or explosion hazard. This condition shall be maintained
throughout the period of inspection or work.
All open flame and spark producing
devices within flammable vapor areas shall be shut down and
shall not be operated while air ventilation is occurring.
Electrical equipment used in
the flammable vapor areas shall be approved for use in Class
I, Group D, Division 1 Hazardous Locations, as defined in
Chapter 9 of the LAMC (Electrical Code).
Aircraft electrical circuits which
are in flammable vapor areas shall be de-energized.
Suitable warning signs shall be
placed in conspicuous locations around the aircraft to indicate
that tank ventilation is in progress.
Aircraft-fueling vehicles shall be loaded only at an approved loading rack. Such loading racks shall be in accordance with Section 5706.5.1.12.
Exceptions:
- Aircraft-refueling units are allowed to be loaded from the fuel tanks of an aircraft during defueling operations.
- Fuel transfer between tank vehicles is allowed to be performed in accordance with Section 5706.6 when the operation is not less than 200 feet (60 960 mm) from an aircraft.
The fuel cargo of such units shall be unloaded only by approved transfer apparatus into the fuel tanks of aircraft, underground storage tanks or approved gravity storage tanks.