AIGF Exit Exam • Set 3 Question 5 of 30

In Piping fabrication, For design pressures in 10 bar and design temperatures of ___________, backing rings will be removed.

✓

Direct Answer

Option C: minus 10°C

Backing rings must be removed from fuel piping butt welds when design pressures reach 10 bar and temperatures are -10°C or colder to eliminate root crevices and fatigue notches.

All Options

A

minus 5°C

B

plus 10°C

C

minus 10°C (Correct Answer)

D

plus 5°C

Detailed Explanation & Context

Backing rings must be removed from fuel piping butt welds when design pressures reach 10 bar and temperatures are -10°C or colder to eliminate root crevices and fatigue notches.

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.