Compliance Dates
Inspection and Test under §180.407 (c)
|
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
|
|
External Visual Inspection:
|
|
|
- All Cargo tanks designed to be loaded by vacuum with full opening rear heads
|
September 1, 1991
|
6 months
|
|
|
September 1, 1991
|
1 year
|
|
Internal Visual Inspection:
|
|
|
- All insulated cargo tanks, except MC 330, MC331, MC338
|
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
|
|
Lining Inspection:
|
|
|
- All lined cargo tanks transporting landing corrosive to the tank
|
September 1, 1991
|
1 year
|
|
Leakage Test:
|
|
|
- All other cargo tanks except MC 338
|
September 1, 1991
|
1 year
|
- MC 330 and MC 331 cargo tanks in chlorine service
|
September 1, 1991
|
2 years
|
|
Pressure Test:
|
|
|
|
(hydrostatic or pneumatic) (see Notes 2 &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 & MC 331 Service:
|
|
|
|
|
September 1, 1992
|
2 years
|
|
|
September 1, 1995
|
5 years
|
|
Thickness Test:
|
|
|
- All unlined cargo tanks transporting material corrosive to the tank, except MC 338
|
September 1, 1992
|
2 years
|
Note 1: If a cargo tank is subject to an applicable inspection or test requirement under the regulation in effect on December 30, 1990 and the due date (as specified by a requirement in affect on December 3,1990) for completing the required inspection or test occurs before the compliance date listed in Table 1, the earlier date applies.
Note 2: Pressure testing is not required for MC 330 & MC 331 cargo tanks in dedicated sodium metal service.
Note 3: Pressure testing is not required for uninstalled lined cargo tanks, with a design pressure or MAWP 15 psig or less, which receive an external visual inspection ad lining inspection at least once a year.
|
