that area. For repairs to base material, the minimum examination shall be
the same as required for butt welds. Indication of a defect shall be
regarded as a defect unless reevaluation by NDE or by surface conditioning
shows that no unacceptable indications are present. The use of foreign
material to mask, fill in, seal, or disguise welding defects will not be
permitted.
**************************************************************************
NOTE: Regarding Table IV, information based on the
table must be developed and included in each project
specification. Tables must clearly define the
systems to be inspected and the type of NDE
required. Specify 100 percent NDE when required by
DM-22 and 49 CFR 195, as covered by paragraph
entitled "Piping Subject to 100 Percent NDE." Where
appears, select 100 percent or random but not both.
**************************************************************************
TABLE IV
EXAMINATIONS AND TESTS FOR VARIOUS MATERIALS AND SERVICES
Examinations or Tests Required
___________________________________________________________________________
[Magnetic Particle]
Material or
[or] [Liquid
Ultra-
Application
Visual Radiographic
Penetrant]
sonic
___________________________________________________________________________
High-alloy austenitic
or nickel steels or
nickel alloys for
cryogenic service
and vacuum service
a. Tack welds
Yes No
No
No
b. Root passes
Yes No
Yes
No
c. Intermediate passes Yes No
No
No
d. Completed weld
Yes 100 percent
Yes(PT only) Yes for
for DN over
wall
32 mm 60
50 mm and
thickness
percent for
over
DN 32 mm
and less
d. Completed weld
Yes 100 percent
Yes(PT only) Yes for
for NPS over
wall
1 1/4 inches
1/2 inch and thickness
60 percent
over
for NPS 1 1/4
inches and less
High-alloy austenitic
or nickel steels or
nickel alloys for
other than cryogenic
or vacuum service
a. Tack welds
Yes No
No
No
b. Root passes
Yes No
[No] [Yes]
No
c. Intermediate passes Yes No
No
No
d.
Completed weld
Yes
[100 percent]
Yes(PT only)
[No] [Yes]
[Random]
SECTION 15216N
Page 22
Previous Page
