179.500-18—Inspection and reports.

(Place)

(Date)

Steel Tanks

It is hereby certified that drawings were submitted for these tanks under AAR Application for Approval ______ and approved by the AAR Committee on Tank Cars under date of ______.

Built for ____________ Company

Location at

Built by ____________ Company

Location at

Consigned to _________ Company

Location at

Quantity

Length (inches)

Outside diameter (inches)

Marks stamped into tank as required in § 179.500-17 are:

DOT-107A* * * *

Serial numbers __ to __ inclusive

Inspector's mark

Owner's mark

Test date

Water capacity (see Record of Hydrostatic Tests).

Tare weights (yes or no) (see Record of Hydrostatic Tests).

These tanks were made by process of

Steel used was identified as indicated by the attached list showing the serial number of each tank, followed by the heat number.

Steel used was verified as to chemical analysis and record thereof is attached hereto. Heat numbers were stamped into metal. All material was inspected and each tank was inspected both before and after closing in ends; all material accepted was found free from seams, cracks, laminations, and other defects which might prove injurious to strength of tank. Processes of manufacture and heat-treatment of tanks were witnessed and found to be efficient and satisfactory.

Before necking-down ends, each tank was measured at each location prescribed in § 179.500-4(c) and minimum wall thickness in inches at each location was recorded; maximum inside diameter in inches at each location was recorded; value of D in inches at each location was calculated and recorded; maximum fiber stress in wall at location showing larger value for

(D2 d2)/(D2−d2)

was calculated for 7/10 the marked test pressure and recorded. Calculations were made by the formula:

S=[0.7P(D2−d2)/(D2 d2)]

Hydrostatic tests, tensile test of material, and other tests as prescribed in this specification, were made in the presence of the inspector, and all material and tanks accepted were found to be in compliance with the requirements of this specification. Records thereof are attached hereto.

I hereby certify that all of these tanks proved satisfactory in every way and comply with the requirements of Department of Transportation Specification No. 107A* * * *.

(Signed)

(Inspector)

(Place)

(Date)

Record of Chemical Analysis of Steel for Tanks

Numbered ____ to ____ inclusive

Size _ inches outside diameter by _ inches long

Built by ____________ Company

For _______________ Company

These analyses were made by

(Signed)

(Place)

(Date)

Record of Chemical Analysis of Steel in Tanks

Numbered ____ to ____ inclusive

Size __ inches outside by __ inches long

Built by ____________ Company

For _______________ Company

(Signed)

(Place)

(Date)

(Signed)

(Place)

(Date)

(Signed)

CFR

179.500-18—Inspection and reports.