1
Q
Subject to temper-embrittlement
A
Low Chromes
2
Q
Subject to chloride stress-corrosion cracking
A
300 SS
3
Q
Subject to polytheonic acid stress-corrosion cracking
A
300 SS
4
Q
Common material with an endurance limit (fatigue cracking cannot occur below this stress level)
A
CS
5
Q
Common material without an endurance limit
A
Aust. SS
6
Q
P-numbers allowed to use pre-heat in lieu of PWHT
A
P1 & P3
7
Q
P-numbers allowed to use CDW in lieu of PWHT
A
P1, P3 & P4
8
Q
P-numbers of base metal that should be examined for delayed cracking after repairs to SS cladding
A
P3, P4 & P5
API-510
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Decks in class (12)
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