MIL-HDBK-1032/2
materials warehouses by NAVSUP policy and storage restrictions of certain
materials. NAVSUP policy permits man-up equipment to operate to the 25-foot
(7620 mm) limit while man-down equipment is restricted to 18 feet (5490 mm).
Combined Shed Storage. When a flammable/hazardous materials
4.3.3
warehouse is combined with shed storage, provide a 4-hour fire wall to
separate the two storage areas. Shed and warehouse floors shall be at the
same elevation, with spill containment trenches or drains at fire doors.
Access to the shed shall be from the dock area of the warehouse, NOT from
within a storage area.
Construction. Construction requirements for flammable/hazardous
4.4
materials warehouses shall be in accordance with the provisions of DOD
MIL-HDBK-1008; 29CFR Part 1910.106(d); and NFPA 30. Roofing must be specified
to resist thermal expansion and twisting which may lead to roof collapse
during a fire. Refer to Table 8 for general design requirements.
Structural elements shall be noncombustible.
4.4.1
Structural Elements.
Fire Walls. Provide fire walls with a 4-hour rating to separate
4.4.2
noncompatible storage areas from other occupancies and limit fire areas as
described in subparagraph 4.3.2. Outside walls may be 2-hour rated.
Doors. Fire doors shall be of the rolling or sliding steel type.
4.4.3
Where possible, eliminate fire door penetration of fire walls. Provide metal
doors for personnel use.
4.4.4
Explosion Relief. In storage areas that are classified as a cut-off
room or an attached building, and where Class 1-A liquids (NFPA 30) are stored
in containers larger than one gallon (3.79 L), the exterior wall or roof
construction shall be designed to include explosion venting features such as
lightweight wall and roof assemblies, and roof hatches or windows of the
explosion venting type. NFPA 68, which provides information on this subject,
shall be used in conjunction with good engineering judgment.
Floor Coatings. Provide nonabsorbent, nonskid, corrosion, and acid
4.4.5
resistant coatings on all flammable storage and staging area floors.
Showers and Eye Wash Stations. Provide emergency showers and eye
4.4.6
wash stations within 100 feet (30.5 m) of areas inside the facility subject to
potential spills.
4.4.7
Ventilation. Storage spaces for each category of hazardous material
listed in Table 8 must have separate ventilation systems. Ventilation systems
must provide continuous control and prevent build-up of explosive
concentrations of vapors. Provide a ventilation ratio of effective vent area
to floor area of at least 1:30 using roof vents or other suitable methods.
Provide minimum mechanical air circulation of six air changes per hour for
inside storage. Connect ventilation system to room lighting switch and supply
air system. Exhaust from both the floor and roof heights. Refer to 29CFR
Part 1910 and NAVSUPINST 5100.27. Ducts, fans, and other parts of systems
used to ventilate corrosive atmospheres shall be of corrosion resistant
construction.
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