MIL-HDBK-1110
d)
Excess oxygen posing fire or explosion hazard
Confined areas being cleaned or painted should be well
ventilated to prevent the accumulation of toxic or combustible
airborne contaminants. Mechanical equipment should be grounded,
along with conductive substrates being cleaned or coated, to
prevent sparking. Otherwise, an explosion may occur.
Confined spaces with limited ventilation and access may
have hazards that are not easily detected. They should be
checked for safety requirements before entering. Specific safety
requirements for confined spaces can be found in OSHA Safety and
Health Standards (29 CFR 1910) Paragraph 146 (Permit Required
Confined Spaces). Paints with "safety solvents" (relatively high
flash points) should be used in these areas. Hand and power
tools and other electrical equipment including lighting should be
non-sparking and explosion-proof. Because paint solvent vapors
are heavier than air, ventilation of confined spaces requires
exit of contaminated air from the lowest point. Other special
considerations may apply. Installation safety offices generally
provide guidance and support for confined space operations.
13.6.4
Remote Areas. When doing field work at remote
locations, personnel should have a response plan for emergencies.
Access to a telephone and medical treatment should be
established. Knowledge of first aid, especially CPR, for
immediate action is also beneficial.
13.7
Personal Protective Equipment. Hazards in painting
operations can be greatly reduced by use of protective clothing,
respirators, and other personal protective equipment.
13.7.1
Clothing. Protective garments must resist chemical
attack from three different routes of entry:
a)
Permeation - chemical works its way through the
suit
b)
Penetration - entry through physical imperfection
(damage)
c)
Degradation - properties of material chemically
degraded
Selection of the chemical protective clothing must be
based on the chemical, the operation (i.e., need for abrasion
resistance), and the effectiveness of the clothing material as a
barrier against the chemical. Contaminated clothing should be
discarded at the job site or thoroughly cleaned before reuse.
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