MIL-HDBK-1005/9A
protection from the corrosive environments. Careful selection
of materials is necessary. The following points should be
considered:
a) Concrete block or masonry buildings are preferred
over steel to resist corrosion.
b) Exhaust and ventilation ductwork must be
structurally sound. Ductwork must have the proper materials to
resist corrosive fumes vented or a corrosive atmosphere on the
exterior side. Roof fans and ventilators should be suitable for
corrosive atmosphere of building air space.
c) Piping and conduit material should be resistant to
the corrosive agents and operating conditions to which they may
be exposed. Paint exposed metal that is nonresistant to
corrosion with a corrosion-resistant paint. Consider the effect
of a corrosive atmosphere on building interior roof and walls.
d) Tank materials (or liners) should be of proper
corrosion-resistant material.
e) Materials for seals, connectors, and gaskets on
piping and pumps exposed to corrosive materials should be
carefully selected to avoid damage.
f)
Pump housing should be corrosion resistant.
g) Provide overhead piping which carries corrosive-
type materials with a corrosion-resistant sleeve and directed to
a safe area to avoid safety hazards from leaky piping. Provide
emergency area floor drains.
h) Proper welding specifications and materials are
necessary for constructing or repairing tanks and equipment
which are exposed to corrosive materials.
i) Electrical boxes should be located away from
corrosive environments. If located in corrosive operating
areas, they should be sealed gasket types and corrosion
resistant.
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