Contractor Order No.
Manufacturer's Name or Trademark
Tech. Dir. Compliance (Contractor to leave
blank space for future service use)
Internal nameplate - A metal nameplate shall be securely affixed
to an internal structural component. The information to be included on the name-
plate shall be identical to that specified in paragraph 3.5.1 above. The nameplate
shall be visible and accessible through one of the access doors.
T a i l assemblies - The tank shall have provision for either a bob-
tail assembly or a long tail cone (see 6. 4).
B o b - t a i l assembly - The bob-tail assembly shall be smoothly
contoured and without fins.
Long tail cone assembly - The long tail cone assembly shall
have provisions for either 0, 2 or 4 fins. Provisions shall also permit mounting
the fins either vertically and horizontally, or at 45 degrees from the vertical.
W e i g h t - The empty weight of the tank with two fins installed on
the long tail shall not exceed 200 pounds.
Float switch actuation - The tank float switch shall be actuated
at the following levels:
285.0 to 291.0
a. 6° `nose up
288.0 to 294.0
b. 1 15' nose up
c. 1 20' nose down
277.0 to 283.0
A e r o d y n a m i c smoothness - Variation from the nominal contour
smoothness of the tank as shown on the applicable drawings shall not exceed the
dimensions shown herein when measured with a spline over the distance of six (6)
inches in any direction including weld bead height. The nominal dimension varia-
tion for the first third of the tank shall be ± .032 inches and ± .050 inches for the
remaining two-thirds of the tank. All external screws, rivets, etc., shall be flush.
Cleaning - Each tank component shall be thoroughly cleaned,
internally and externally, of dirt, sand, metal chips or other foreign matter while
being assembled. The tank shall be thoroughly cleaned of the above after assembly.