AIGF Exit Exam • Set 3 Question 16 of 30

In Direct connections of Flanged connections, welded flanges shall not be used in nominal sizes _______________

✓

Direct Answer

Option D: above 50 mm

IGF Code regulations prohibit the use of welded flanges in nominal sizes above 50 mm for specific piping applications to mitigate risks associated with thermal expansion and contraction. Limiting flange size ensures that the mechanical connections remain within safe operational parameters, preventing fatigue-induced leaks in the fuel containment system.

All Options

A

below 50 mm

B

below 25 mm

C

above 25 mm

D

above 50 mm (Correct Answer)

Detailed Explanation & Context

IGF Code regulations prohibit the use of welded flanges in nominal sizes above 50 mm for specific piping applications to mitigate risks associated with thermal expansion and contraction. Limiting flange size ensures that the mechanical connections remain within safe operational parameters, preventing fatigue-induced leaks in the fuel containment system.

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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Q1 In Piping fabrication, For design pressures in ______________ and design temperatures of minus 10°C or colder, backing rings will be removed. Q2 In Piping fabrication, For design pressures in 10 bar and design temperatures of ___________, backing rings will be removed. Q3 In Direct connections of Piping fabrication, ____________ with sleeves and related welding, having dimensions in accordance with recognized standards Q4 In Direct connections of Piping fabrication, Slip-on welded joints are only be used for instrument lines and open-ended lines with an ___________ Q5 In Direct connections of Piping fabrication, Slip-on welded joints are only be used for instrument lines and design temperatures not colder than _______________ Q6 In Direct connections of Piping fabrication, ____________ used for accessory lines and instrumentation lines with external diameters of 25 mm or less. Q7 In Direct connections of Piping fabrication, Screwed couplings used for accessory lines and instrumentation lines with _______________ Q8 In Direct connections of Flanged connections, Flanges in flange connections will be of ____________ Q9 In Direct connections of Flanged connections, For all piping except open ended, what restrictions is applied? Q10 In Direct connections of Flanged connections, For all piping except open ended, For design temperatures ___________ only welded neck flanges shall be used.