MIL-DTL-2036E
APPENDIX A
Clearance shall exist between the gland nut flange and the tube when the packing is fully compressed.
The radial clearance between the cable and the tube shall be not greater than .03125 inch (.7938mm).
A.3.6.2 Nonrotating equipment. Provisions for cable entrance shall be in accordance with the equipment
specification. If cable entrance requirements are not specified, space shall be provided at suitable
locations on the top and bottom of the enclosure for installation of Navy standard terminal tubes.
A.3.7 Bearing housing construction of rotating equipment. The following are applicable to bearing
housing of rotating equipment:
(a)
Ball or roller bearings are not considered as forming any part of the flame path.
(b)
Grease drains shall be outside the bearings.
(c)
A removable outer bearing cap is not considered part of the required length of fit unless the cap is
essential to hold the bearing in place.
A.3.8 Identification plates. In addition to the information required for identification of the equipment,
identification plates shall state "Explosionproof, Group D. For use in gasoline vapors and similar
atmospheres. CAUTION: During repair, do not deform, damage, or paint mating surfaces of enclosure
parts. All enclosure parts should fit tightly using all fasteners provided."
A.3.9 Warning plates for electrical control equipment. Explosionproof control equipment shall be
provided with a readily legible, nontarnishing warning plate, reading as follows:
"WARNING: EXPLOSIVE VAPORS PRESENT. DISCONNECT SUPPLY CURRENT BEFORE
OPENING COVER; DO NOT ENERGIZE UNLESS THE EQUIPMENT IS FULLY ASSEMBLED AND ALL
OPENINGS IN THE ENCLOSURE ARE PROPERLY CLOSED."
A.3.10 Drawing information. Equipment drawings covering explosionproof enclosures, in addition to the
equipment specification requirements (see 6.2.2), shall include the following:
(a)
Identification of equipment as "explosionproof".
(b)
Cross-sectional view of all explosionproof joints. Methods of assembly around explosionproof
joints shall also be illustrated.
(c)
Finish dimensional details with tolerances and clearance of each metal-to-metal joint.
(d) Detail of identification plate.
(e) The internal free volume of the enclosure.
(f)
The total internal volume of the enclosure when empty.
(g) Record of the NAVSEA Investigation, including:
(1) Report number and date.
(2) Navy approval activity, file number, and date of approval letter.
(h) Weight.
(i)
Drawings used for manufacturing purposes shall carry the notation "DO NOT DRILL THROUGH"
where applicable to bolt holes.
(j)
Class and type.
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