-
Roofs- Maximum amount of primary seal that can be removed for repair while tank is still in service 653: 9.13.1
1/4
-
NDE- Minimum number of RT's required on a circular shell replacement plate
-
FFS- Current joint efficiency "E" in API 650
-
FFS- Joint efficiency "E"- Calculating tmin for an LTA, when LTA is away from rivets by ≥ 6"
-
FFS- Joint efficiency "E"- Calculating tmin for an LTA, when LTA is away from weld by greater of: 1" of 2t 653: 4.3.3.1
-
Reconstruction- Number of sets of center punch marks located on top and bottom edges of each shell piece 653: 10.3.5.2
2
-
Weld Qualification- Number of tension test to qualify a WPS IX: QW 451.1
2
-
Weld qualification- Number of bend tests to qualify a welder or welding operator in welding positions 1G-4G IX: QW 452.1.a
2
-
NDE- Minimum # of exposures to RT 360° of a weld using a double-wall technique, double-wall view (elliptical shot) V: T-271.2.b.1
2
-
NDE- RT film density range-allowed for the weld & IQI when using a gamma ray source
-
NDE- Minimum # of exposures to RT 360° of a weld using a double-wall technique, single wall view V: T-271.2.a
3
-
Impact Test- Number of test bars required in each set of impact test specimens
-
NDE- When using a shim under a hole-type IQI, the number of sides of the IQI that must be seen in the RT image V: T-277.3
3
-
Hot tap- minimum number of UT readings around the circumference of a new hot tapped nozzle 653: 9.14.3.2
4
-
Weld Qualification- Number of bend tests to qualify a WPS IX: QW 451.1
4
-
Weld Qualification- Number of bend tests required to qualify a welder in welding positions 5G & 6G IX: QW 452.1.a Note 1
4
-
FFS- Corrosion averaging in a shell LTA- Minimum # of UT readings to take on each designated vertical line 653: 4.3.2.1.c
5
-
NDE- Minimum number of RT's required on a square or rectangular shell replacement plate
-
Settlement- Minimum number of settlement points around circumference
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