Technical data

h. All aircraft, equipment, work stands, solvents contain-
ers/buckets, people, and adjacent equipment shall be
grounded prior to using the painting equipment.
i. Prior to cleaning electrostatic paint guns, the operators
shall ensure that they and the gun are grounded, and that
the equipment is de-energized. All spray nozzles and
auxiliary equipment being cleaned with flammable sol-
vents shall be done inside the paint hangar facility with
the ventilation system operating.
j. The manufacturers operational/safety procedural criteria
is used as a supplement to these procedures.
k. All electrical equipment within the paint hangar facility
must be approved for explosion proof environments.
The painting equipment used for this process must have
been tested and approved by a recognized laboratory for
NFPA70 Class I, Division I, Groups C and D locations.
l. When painting fueled aircraft, the paint hangar facility
and aircraft shall be protected with by a fire suppression
system. The fire suppression system must be fully
operational prior to the start of electrostatic painting.
Facility fire suppression required for electrostatic paint-
ing is outlined in MIL-STD-3007, ETL 02-15, and ETL
98-8.
m. Supervisory personnel must ensure all fire/safety pre-
cautions have been implemented prior to the start of the
painting operation.
n. LEL readings in the fuel vent areas must be taken prior
to the painting of each aircraft. LEL readings must be
maintained at or below 20 percent.
5.5.2 Field Level Aircraft Painting Operations. Field
level painting of aircraft shall conform to the following safety
and health protection precautions:
Electrostatic spray painting of JP-8 fueled aircraft
constitutes a significant hazard when the on-
board fuel temperature exceeds 100° F.
a. Painting of aircraft at field level shall be limited to only
maintenance painting operations. Maintenance painting
is permitted in designated paint areas identified and
approved per requirements in AFOSH STD 91-17 and
approved by the Base Fire, Safety, Bioenvironmental,
and Environmental Management Offices. Aircraft con-
taining JP-5, JP-8, or equivalent fuel may be electro-
statically painted at field level organizations, providing
the on-board fuel temperature is below the flash point of
100° F before electrostatic painting operations begin.
b. The requirements for aircraft painting in AFOSH STD
91-17 shall be strictly followed.
c. Personnel involved in painting operations of both unfu-
eled and fueled aircraft shall be trained in the fire/safety
and environmental hazards associated with the pro-
cesses.
d. All safety and regulating features on associated spray
painting equipment and safety equipment shall be op-
erational.
e. Unauthorized personnel will not be allowed in desig-
nated paint areas during painting operations.
f. Prior to starting a paint operation, ground all aircraft,
metal solvent containers, flammable waste containers,
airless and air-assisted airless paint spray equipment,
and adjacent equipment as deemed necessary by the
Base Safety Office.
g. Supervisory personnel must make sure all fire/safety
precautions have been implemented prior to the start of
the painting operations.
h. LEL readings at the fuel vent areas must be taken prior
to the painting of each aircraft and maintained at or
below 20 percent LEL as defined in OSHA Standard
1910.94.
i. Painting equipment shall be the HVLP or electrostatic
type in accordance with EPA NESHAP requirements.
5.5.3 Electrostatic Aircraft Painting. Electrostatic
painting of aircraft shall conform to the following safety and
health protection precautions:
Electrostatic spray painting of JP-8 fueled aircraft
constitutes a significant hazard when the on-
board fuel temperature exceeds 100° F.
a. Aircraft to be electrostatically painted shall be defueled
and purged. Exceptions: Aircraft fueled only with JP-5
and/or JP-8 are authorized to be painted with electro-
static airless spray equipment approved in SA 480
without being defueled and purged, providing fuel
temperature remains below 100° F. Electrostatic spray
painting of JP-5 or JP-8 fueled aircraft can only be
performed in designated paint hangars that are approved
for this function by the local base Fire, Safety, Bioen-
vironmental, and Environmental Management Offices.
The aircraft being electrostatically painted must be
grounded in two locations to prevent accidental electri-
cal discharge from the electrostatic spray equipment.
Each base is responsible for establishing procedures to
ensure that the temperature of on-board fuel is below
100° F before and during electrostatic painting applica-
tions.
TO 1-1-8
Change 3 5-5