Change 1 2-1
MACHINE SHOP PRACTICES
2-1. General. The following paragraphs describe
machine shop rules, machine safety precautions, care
and use of equipment, laying out and mounting work, and
special operations on drilling machines.
2-2. Shop Rules. The practices and procedures
described in this chapter pertain to the manufacturing
and repair functions of aviation activities and are applica-
ble to all levels of maintenance. Because of the many
types of Army aircraft, each shop within the manufactur-
ing and repair section must, of necessity, have personnel
trained in general practices and procedures to the extent
that different type and model aircraft do not upset a
smooth running shop.
a. Responsibility. All supervisory personnel are
responsible for a continuing and effective shop safety
program. To implement and maintain this program, shop
supervisors will utilize bulletin boards, signs, and any
other effective method. Shop personnel will cooperate in
the shop safety program by making helpful recommen-
dations, and continually exercising care and caution in
the operation of all shop equipment. All shop personnel
will strive to improve the safety program and be espe-
cially alert to observe and correct hazardous conditions
and unsafe shop practices. All accidents, no matter how
minor, shall be reported to the shop supervisor, and all
published instructions regarding safety shall be strictly
adhered to. Also, safety engineers and safety officers will
ensure that proper safety procedures are adhered to in
accordance with AR 385-10, Army Safety Program. The
Occupational Safety and Health Act of 1971, OSHA
1910.251; all applicable fire codes, NFPA 410; and other
accepted civilian and military safety practices.
b. Shop Housekeeping. Housekeeping is the yard-
stick by which the shops are judged. A clean, well-ar-
ranged shop is a safe shop and reflects credit on all
personnel concerned with its operation. The following
shop practices shall be observed:
Oil pans or drip pans shall be used where
leaking oil, grease, and similar materials may cause
hazardous accumulations on equipment or floors. All
spills shall be cleaned up immediately. Approved sweep-
ing compound may be used to remove these materials
from the floor.
Floors shall not be cleaned with volatile or
flammable liquids. Fire hazard which may
damage equipment may result.
Floors shall be maintained smooth and
clean, free of all obstructions and slippery substances.
Holes and irregularities in floors shall be repaired to
maintain a level surface free from tripping hazards.
All unnecessary materials on walls shall be
removed and projections shall be kept to a minimum.
Aisles shall be clearly defined and kept free
of hazardous obstructions. Where possible, aisles shall
be suitably marked by painting.
All machines, work benches, aisles, etc.,
shall be adequately illuminated.
c. Equipment Safety. Unsafe equipment shall be
reported immediately. The following equipment safety
practices shall be observed:
Machines shall be located to provide opera-
tors with sufficient space to handle materials and perform
job operations without interference.
Bolt down all machinery that can move or
walk due to vibration (drill press, bench grinder, etc.).
Substantial low resistance conductors shall
be used to ground all stationary and portable machines,
equipment, or other devices in which static charges may
be generated, or which require electrical circuits of a
Shop machinery shall be operated only by
qualified personnel observing safe practices.