49 CFR 180.407 - Requirements for test and inspection of specification cargo tanks.
|Test or inspection (cargo tank specification, configuration, and service)||Date by which first test must be completed (see note 1)||Interval period after first test|
|Note 1: If a cargo tank is subject to an applicable inspection or test requirement under the regulations in effect on December 30, 1990, and the due date (as specified by a requirement in effect on December 30, 1990) for completing the required inspection or test occurs before the compliance date listed in table I, the earlier date applies.|
|Note 2: Pressure testing is not required for MC 330 and MC 331 cargo tanks in dedicated sodium metal service.|
|Note 3: Pressure testing is not required for uninsulated lined cargo tanks, with a design pressure or MAWP 15 psig or less, which receive an external visual inspection and lining inspection at least once each year.|
|Note 4: Insulated cargo tanks equipped with manholes or inspection openings may perform either an internal visual inspection in conjunction with the external visual inspection or a hydrostatic or pneumatic pressure-test of the cargo tank.|
|External Visual Inspection:|
|All cargo tanks designed to be loaded by vacuum with full opening rear heads||September 1, 1991||6 months.|
|All other cargo tanks||September 1, 1991||1 year.|
|Internal Visual Inspection:|
|All insulated cargo tanks, except MC 330, MC 331, MC 338 (see Note 4)||September 1, 1991||1 year.|
|All cargo tanks transporting lading corrosive to the tank||September 1, 1991||1 year.|
|All other cargo tanks, except MC 338||September 1, 1995||5 years.|
|All lined cargo tanks transporting lading corrosive to the tank||September 1, 1991||1 year.|
|MC 330 and MC 331 cargo tanks in chlorine service||September 1, 1991||2 years.|
|All other cargo tanks except MC 338||September 1, 1991||1 year.|
|(Hydrostatic or pneumatic) (See Notes 2 and 3)|
|All cargo tanks which are insulated with no manhole or insulated and lined, except MC 338||September 1, 1991||1 year.|
|All cargo tanks designed to be loaded by vacuum with full opening rear heads||September 1, 1992||2 years.|
|MC 330 and MC 331 cargo tanks in chlorine service||September 1, 1992||2 years.|
|All other cargo tanks||September 1, 1995||5 years.|
|All unlined cargo tanks transporting material corrosive to the tank, except MC 338||September 1, 1992||2 years.|
|MC 300, 301, 302, 303, 305, 306||20.7 kPa (3 psig) or design pressure, whichever is greater.|
|MC 304, 307||275.8 kPa (40 psig) or 1.5 times the design pressure, whichever is greater.|
|MC 310, 311, 312||20.7 kPa (3 psig) or 1.5 times the design pressure, whichever is greater.|
|MC 330, 331||1.5 times either the MAWP or the re-rated pressure, whichever is applicable.|
|MC 338||1.25 times either the MAWP or the re-rated pressure, whichever is applicable.|
|DOT 406||34.5 kPa (5 psig) or 1.5 times the MAWP, whichever is greater.|
|DOT 407||275.8 kPa (40 psig) or 1.5 times the MAWP, whichever is greater.|
|DOT 412||1.5 times the MAWP.|
|Minimum manufactured thickness (US gauge or inches)||Nominal decimal equivalent for (inches)||In-service minimum thickness reference (inches)|
|Minimum manufactured thickness||In-service minimum thickness (inches)|
Title 49 published on 2014-10-01.
The following are only the Rules published in the Federal Register after the published date of Title 49.
For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.
Title 49 published on 2014-10-01
The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 49 CFR Part 180 after this date.