1. No
Yes
> 15ksi ?
Dynamic or
Cyclic Loading ?
Yes No
PSL 1-4, 3G
PSL 5
PSL 6,7 …
ASME Div 3
Elastic or
E-P Analysis
ASME Div 2 /
API 6A
ASME Div 3
E-P Analysis
API 579
(or equiv.)
FAD
Fracture
Mechanics
Analysis

2. Yes
Yes
Yes
Dynamic or
Cyclic Loading ?
> 15ksi ?
> 350 F ? No No
JJ material
class
KK material
class
AA-HH
API 6A
corrosion
allowance calc.
API 6A
corrosion
allowance calc.
accelerated
corrosion analysis
K1C fracture
toughness
cycle life calc.
elevated temp.
K1C frac. tough.
cycle life calc.
API 6A
design life calc.

3. Yes
Yes
Yes (PSL7)
> 15ksi ?
> PSL4 ?
Critical Service? No
No (PSL 5-6)
PR1, PR2
PR3
PR4
API 6A /17D
design life calc.
API 579 (or equiv.)
FAD – cycle
design life
API 579 (or equiv.)
FAD – cycle
design life
fracture
toughness test
+ cycle life analysis
fracture
toughness test
+ cycle life test
API 6A / 17D
validation tests