Criteria for pipe stress analysis

A fellow piper passed on this link he stumbled across while asking the question:

"Do you know of any criteria by which you would select pipes to have stress analysis?"

assembly.nerdworld.com/assembly. ... num=229312

Just in case the link ever dissapears, here is the text:

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Selection criteria for lines subject to comprehensive stress analysis according NORSOK standard:

As a general guidance, a line shall be subject to comprehensive stress analysis if it falls into any of the following categories:

All lines at design temperature above 180°C.
4" NPS and larger at design temperature above 130°C.
16" NPS and larger at design temperature above 105°C.
All lines which have a design temperature below -30°C provided that the difference between the maximum and minimum design temperature is above:
-190°C for all piping
-140°C for piping 4" NPS and larger
-115°C for piping 16" NPS and larger
Note: These temperatures above are based on a design temperature 30°C above maximum operating temperature. Where this is not the case, 30°C must be subtracted from values above.
Lines 3" NPS and larger with wall thickness in excess of 10% of outside diameter. Thin walled piping of 20" NPS and larger with wall thickness less than 1% of the outside diameter.
All lines 3" NPS and larger connected to sensitive equipment such as rotating equipment. However, lubrication oil lines, cooling medium lines etc. for such equipment shall not be selected due to this item.
All piping subject to vibration due to internal forces such as flow pulsation and/or slugging or external mechanical forces.
All relief lines connected to pressure relief valves and rupture discs.
All blowdown lines 2" NPS and larger excluding drains.
All piping along the derrick and the flare tower.
All lines above 3" NPS likely to be affected by movement of connecting equipment or by structural deflection.
GRE piping 3" NPS and larger.
All lines 3" NPS and larger subject to steam out.
Long vertical lines (typical 20 meter and higher).
Other lines as requested by the stress engineer.
All production and injection manifolds with connecting piping.
Lines subject to external movements, such as abnormal platform deflections, bridge movements, platform settlements etc.