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Title 49 Part 178 → Subpart J → §178.347-2

Title 49 → Subtitle B → Chapter I → Subchapter C → Part 178 → Subpart J → §178.347-2

Electronic Code of Federal Regulations e-CFR

Title 49 Part 178 → Subpart J → §178.347-2

e-CFR data is current as of December 5, 2019

Title 49Subtitle BChapter ISubchapter CPart 178Subpart J → §178.347-2


Title 49: Transportation
PART 178—SPECIFICATIONS FOR PACKAGINGS
Subpart J—Specifications for Containers for Motor Vehicle Transportation


§178.347-2   Material and thickness of material.

(a) The type and thickness of material for DOT 407 specification cargo tanks must conform to §178.345-2, but in no case may the thickness be less than that determined by the minimum thickness requirements in §178.320(a). Tables I and II identify the specified minimum thickness values to be employed in that the determination:

Table I—Specified Minimum Thickness of Heads (or Bulkheads and Baffles When Used as Tank Reinforcement) Using Mild Steel (MS), High Strength Low Alloy Steel (HSLA), Austenitic Stainless Steel (SS), or Aluminum (AL)—Expressed in Decimals of an Inch After Forming

Volume capacity in gallons per inch10 or lessOver 10 to 14Over 14 to 18Over 18 to 22Over 22 to 26Over 26 to 30Over 30
Thickness (MS)0.1000.1000.1150.1290.1290.1430.156
Thickness (HSLA)0.1000.1000.1150.1290.1290.1430.156
Thickness (SS)0.1000.1000.1150.1290.1290.1430.156
Thickness (AL)0.1600.1600.1730.1870.1940.2160.237

Table II—Specified Minimum Thickness of Shell Using Mild Steel (MS), High Strength Low Alloy Steel (HSLA), Austenitic Stainless Steel (SS), or Aluminum (AL)—Expressed in Decimals of an Inch After Forming

Volume capacity in gallons per inch10 or lessOver 10 to 14Over 14 to 18Over 18 to 22Over 22 to 26Over 26 to 30Over 30
Thickness (MS)0.1000.1000.1150.1290.1290.1430.156
Thickness (HSLA)0.1000.1000.1150.1290.1290.1430.156
Thickness (SS)0.1000.1000.1150.1290.1290.1430.156
Thickness (AL)0.1510.1510.1600.1730.1940.2160.237

(b) [Reserved]

[Amdt. 178-89, 54 FR 25030, June 12, 1989, as amended at 55 FR 37064, Sept. 7, 1990; Amdt. 178-104, 59 FR 49135, Sept. 26, 1994; 68 FR 19285, Apr. 18, 2003]


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