Footnote
Clasification Society 2024 - Version 9.40

Footnote

Parent topic: Footnotes

For material thickness of more than 25 mm, Charpy V-notch tests shall be conducted as follows:

Material thickness (mm) Test temperature (°C)
25 < t ≤ 30 10°C below design temperature or -20°C, whichever is lower
30 < t ≤ 35 15°C below design temperature or -20°C, whichever is lower
35 < t ≤ 40 20°C below design temperature
40 < t Temperature approved by the Administration or recognized organization acting on its behalf

The impact energy value shall be in accordance with the table for the applicable type of test specimen.

Materials for tanks and parts of tanks which are completely thermally stress relieved after welding may be tested at a temperature 5°C below design temperature or -20°C, whichever is lower.

For thermally stress relieved reinforcements and other fittings, the test temperature shall be the same as that required for the adjacent tank-shell thickness.

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