In Direct connections of Flanged connections, For all piping except open ended, For design temperatures ___________ only welded neck flanges shall be used.
Direct Answer
Option B: colder than minus 55°C
For piping systems operating at temperatures colder than minus 55°C, the IGF Code mandates the use of welded neck flanges. This requirement ensures maximum joint integrity and resistance to thermal stress, preventing potential brittle fractures or seal failures that could occur with less robust flange designs in cryogenic LNG service.
All Options
Detailed Explanation & Context
For piping systems operating at temperatures colder than minus 55°C, the IGF Code mandates the use of welded neck flanges. This requirement ensures maximum joint integrity and resistance to thermal stress, preventing potential brittle fractures or seal failures that could occur with less robust flange designs in cryogenic LNG service.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Ships subject to the IGF Code (AIGF).
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