CSWIP 3.1: Question with Answer and Explanation – Part 7

CSWIP 3.1 QUESTION AND ANSWER SERIES

CSWIP 3.1: Question with Answer and Explanation – Part 1

CSWIP 3.1: Question with Answer and Explanation – Part 2

CSWIP 3.1: Question with Answer and Explanation – Part 3

CSWIP 3.1: Question with Answer and Explanation – Part 4

CSWIP 3.1: Question with Answer and Explanation – Part 5

CSWIP 3.1: Question with Answer and Explanation – Part 6

CSWIP 3.1: Question with Answer and Explanation – Part 7

CSWIP 3.1: Question with Answer and Explanation – Part 8

CSWIP 3.1: Question with Answer and Explanation – Part 9

CSWIP 3.1: Question with Answer and Explanation – Part 10

CSWIP 3.1: Question with Answer and Explanation – Part 11

CSWIP 3.1: Question with Answer and Explanation – Part 12

CSWIP 3.1: Question with Answer and Explanation – Part 13

CSWIP 3.1: Question with Answer and Explanation – Part 14

CSWIP 3.1: Question with Answer and Explanation – Part 15

CSWIP 3.1: Question with Answer and Explanation – Part 16

CSWIP 3.1: Question with Answer and Explanation – Part 17

CSWIP 3.1: Question with Answer and Explanation – Part 18

CSWIP 3.1: Question with Answer and Explanation – Part 19

CSWIP 3.1: Question with Answer and Explanation – Part 20

1) Which of the following would not be required to be checked before welding?

a. The welding consumable
b. The welder qualification
c. Calibration of the welding equipment
d. ( answer ) The workshop humidity

weld 3.PNG

Pls see below link: Typical Duties of a Welding Inspector

2) Is it permissible to allow a trainee welder to carry out production welding?

a. ( answer ) Never
b. Yes as long as the supervisor is happy with his workmanship standard
c. Yes as long as he has the approved qualification to cover the intended scopr of work
d. Yes as long as no NDT is required on the finished weld
  • Before Welding: list of available qualified welders related to WPS’s, certificates are valid and ‘in-date’. 
  • During Welding: is approved to weld the joint

3) What information should be recorded as a minimum, on a completed production weld?

a. Size and type of electrode used
b. Welding supervisor’s name
c. ( answer ) Welder’s identification, date and weld number
d. Welding inspectors name

After Welding – Weld Identification: 

  • identified/numbered as required
  • is marked with welder’s identity

4) Which standard is used for the basic requirements for visual inspection?

a. ( answer ) BS EN 970
b. API 1104
c. BS EN 7079
d. BS EN 4515

BS EN 970 – Non-destructive examination of fusion welds – Visual examination

5) Which standard is used for European welding procedure qualifications?

a. ASME IX
b. BS EN ISO 4872
c. ( answer ) BS EN ISO 15614
d. BS EN ISO 287

weld 4

6) A procedure is a document which:

a. ( answer ) Specifies the way to carry out an activity or a process
b. Provides binding legistative rules that are adopted by an authority
c. Specifies which resources shall be applied by whom and when, to a specific project, product process or contract
d. A written and verbal description of the precise steps to be followed

7) Which BS EN standard is used for welding symbols on drawings?

a. BS EN 970
b. BS EN287
c. ( answer ) BS EN 22553
d. BS EN 4515

weld 5.PNG

8) A document that is established by consensus and approved by a recognised body and provides, for common and repeated use, guidelines, rules, characteristics for activities or their results, aimed at the achievement of the optimum degree of order in a given context is called:

a. Normative document
b. Regulation
c. Specification
d. ( answer ) Standard
  • Specification: Document stating requirements. Meaning full data and its supporting medium stating needs or expectations that is stated, generally implied or obligatory.
  • Standard: A document that is established by consensus and approved by a recognised body. A standard provides, for common and repeated use, guidelines, rules, and characteristics for activities or their results, aimed at the achievement of the optimum degree of order in a given context.

9) A fillet weld has a design throat thickness of 8mm. What is the minimum leg length that is required?

a. 5.6mm
b. ( answer ) 11.2mm
c. 11.8mm
d. It cannot be determined from the information given

weld 6.PNG

Design Throat Thickness = Leg Length x 0.7

Leg Length = Design Throat Thickness x 1.4

It means: 11.2mm

10) Which of the following actions can help to prevent the production of spatter during a welding process:

a. Switch to AC power
b. Use dry electrodes
c. Reduce arc current
d. ( answer ) All of the above

Spatter: small droplets of electrode material can be projected clear of the weld and may be fused to the parent metal. Cause:

  • Excessive current
  • Damp electrodes
  • Contamination
  • Incorrect wire feed speed when welding with the MAG welding process
  • Arc blow

Prevention:

  • Reduce arc power
  • Reduce arc length or swith to AC power
  • Modify electrical settings ( but be careful to maintain full fusion )
  • Use dry electrodes

Pls see next part:

 

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