Specifications

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MIL-STD-J472E
5.13.4.5 Illumination. Adequate illumination shall be provided in all areas. Warning p!acards,
staitways, and all hazadous areas shall be illuminated in accordance with the recommended levels of
Table XXI.
5.13.4.6 Thmnal contact hazards. Equipment which, in normal operation, exposes personnel
to surface temperatures greater or less than those shown below, shall be appropriately guaded.
Surface temperatures induced by climatic environment are exempt tim this mpirerncnt. C~ogenic
systems shall also be appropriately guarded.
Tern
mratlue limits
Exposure
Metal
Glass
Plastic or wood
Mornentiuy contact
60°
c
68° c
85° C
(la”F)
(154° F) (185° F)
Prolonged contact or handing
49° c
59°
c
69° C
(120° F)
(138° F)
(156° F)
Momentary or prolonged
0° c 0° c
contact or handling
(3?”;
(32° F)
(32° F)
5.13.5 General ecluipment-reiated hazards.
5.13.5.1 Interlocks and alarms. The operation of switches or controls which initiate hazardous
operations (e.g., ignition, movement of a crane) shall require the prior operation of a related
or locking
control. Where pmcdcabl% the critical position of such a control shall activate a visual
and auditory
warning device in the affected work area.
5.13.5.2 Acasa Equipment items shall be solocated andmounted that access tothem can be
achieved without danger to personnel from electrical, thermal, mechanical, chemical, radiological, or
other hazards.
5.13.5.3 Hazardous accesa
where access areas must be located over dangerous mechanical or
electrical compomn~ the twcess dcmror cover shall be designed to turn on an internal light when
opened. A highly visible warning label shall be provided on the outside of the dcx)ror cover.
5.13.5.4 E&e rounding. Where applicable, all exposed edges and comers shall be rounded to a
radius not less than 0.75 mm (.03 in). Shap edges and comers that can present a personal safety
hazard or cause equipment damage during usage shall be suitably protected or rounded to a radius not
less than 13 mm (.05 in). - -
5.13.5.5 Safbtv m
“WaDd
~s.
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5.13.6 Platforms.
=f@yp’@ti ——f=
shall be clearly visible and
5.13.6.1 ~ SeJf-lock@ or Wx faiI-safe devices SM1 be incorporated on elevatin
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stands, work platforms and “draw bridges” to prevent accidental or inadvertent collapsing or f Iing.
5.13.6.2 Mm&&, -y bjub andti, Ikdraik+ safdy bass or chains shall bc insdcd
around platforms and across stair or step openings in platforms, ledges, and catwalks,. Such guards
shall be phced 107cm (42 in)
above thd stNMMg st.tt?ace. An intenncdktc guard nut xhatl be
provided. Chains shall he used onlv where it is not femible to instail handrails or safety bars.
KuMxm-ds, IS cm (6 in) high, shall he !nstalled,
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