MIL-T-13291F
3.2 Design. The hot-dip tank shall be new and one of the manufacturer's
current models capable of heating and maintaining selected working tempera-
ture of preservative strippable coatings and sealing compounds in accordance
with the requirements herein. The tanks shall include all components, parts,
and features necessary to meet the performance requirements specified herein.
All parts subject to wear, breakage, or distortion shall be accessible for
Design characteristics shall be in
adjustment, replacement, and repair.
accordance with the types specified in 3.2.1, 3.2.2, and 3.2.3.
3.2.1 Type I. Type I directly heated tank shall have the heating unit
attached to the outside of the dipping compartment.
3.2.2 Type II. The type II tank shall be directly immersion heated. The
heating unit shall be an immersion type heater, located in the bottom of the
dipping compartment.
3.2.3 Type III. The type III indirectly heated tank shall have a dipping
compartment submerged in a heat transfer fluid with the heating unit attached
to or immersed in the heat transfer fluid container.
3.2.4 Measurement systems. Unless otherwise specified, either the U. S.
Customary System of Units (US) or the International System of Units (SI)
shall be used in the design and construction of the hot-dip tank. When only
one system of measurements is acceptable, the particular system required
In this specification, all measurements,
shall be as specified (see 6.2.1).
may be converted to SI units through the use of the conversion factors and
methods specified in FED-STD-376.
3.2.5 Material. Materials shall be as specified herein.
Materials not
specifically designated shall be of good commercial quality. Contact between
dissimilar metals, especially brass, copper, or steel in contact with alumi-
num or magnesium shall not be used in contact with each other unless
protected against galvanic corrosion.
3.2.5.1 Reclaimed materials.
The hot-dip tank may contain reclaimed
materials provided such materials will not jeopardize the hot-dip tank's
intended use and performance. The reclaimed materials shall have been repro-
cessed, remanufactured, or recycled in a manner which will restore them to
the same chemical composition and physical properties as the materials ori-
ginally selected for use on the hot-dip tank.
3.2.6 Energy efficiency. The hot-dip tank and its applicable components
that directly consume energy in normal operation shall be designed and con-
structed for energy efficiency as governed by the latest developments
available with the industry.
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