In Direct connections of Piping fabrication, Slip-on welded joints are only be used for instrument lines and design temperatures not colder than _______________
Direct Answer
Option B: minus 55°C
The IGF Code restricts the application of slip-on welded joints to instrument lines where design temperatures remain above minus 55°C. This limitation is critical because materials and weldments subjected to extreme cryogenic temperatures below this threshold require superior fatigue resistance and structural toughness provided by butt-welded connections rather than slip-on joints.
All Options
Detailed Explanation & Context
The IGF Code restricts the application of slip-on welded joints to instrument lines where design temperatures remain above minus 55°C. This limitation is critical because materials and weldments subjected to extreme cryogenic temperatures below this threshold require superior fatigue resistance and structural toughness provided by butt-welded connections rather than slip-on joints.
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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