Welding Basic Interview Question and Answers

1. What is WPS?

WPS is Welding Procedure Specification, It is a written document that provides direction to the welder or welding operator for making production welds.

2. What is the Welding Process?

a) GTAW (Gas Tungeston Arc Welding)
b) SMAW (Shielded Metal Arc Welding)
c) SAW (Submerged Arc Welding)
d) FCAW (Flux Coated Arc Welding)
e) GMAW (Gas Metal Arc Welding)
f) PAW (Plasma Arc Welding)

3. What are the different types of Groove?
a) V – Groove
b) U – Groove
c) Double V Groove

4. What are the different types of Base Material with Grade?

CS
i) A 106 Gr B
ii) A 53 Gr B
iii) API 5L Gr B

SS
i) A 304
ii) A 304L
iii) A 316
iv) A 316L
v) A 321
vi) A 322
vii) A 347
viii) A 348

ALLOY
A 335 – P11
A 335 – P22

MONEL
ASTM B 165 No: 4400

ALUMINIUM
SB 241 Grade 5083

5 . Specify Electrode Trade Name
ESAB, LINCON, ADOR, GEKA, METRODE

6 . Welding Position

Pipe – 1GR, 2G, 5G, 6G,
Plate – 1G, 2G, 3G, 4G

PIPE:-
1G: – A Pipe is Horizontal Position and weld beed is a vertical position. The Pipe Will be rotated.
2G: – A Pipe is Vertical Position and weld beed is Horizontal Position
5G: – A Pipe is Horizontal Position and weld beed is Vertical Position
6G: – A Pipe is a 450 Position

PLATE:-
1G: – Plate is Horizontal and weld is Horizontal
2G: – Plate is Vertical and weld is Horizontal
3G: – Plate is Vertical and weld is Vertical
4G: – A Plate is in Overhead Position weld is Horizontal Position

7. Types of Welding Position?
Uphill Position and Down Position.

8. Type of Common Welds?

Groove Welds
Fillet Welds
Spot / Seam Welds
Plug / Slot Welds
Edge Welds

9. Type of Common Joints?

Butt Joints
T Joints
Lap Joints
Open Corner Joints
Closed Corner Joints

10. What are the Weldment Terms?
i. Weld Face
ii. Weld Root
iii. Fusion Zone
iv. Fusion Boundary
v. Heat Affected Zone (HAZ)
vi. Weld Toes
vii. Weld Width

11. What are the Welding Imperfections?
I. Cracks
II. Gas Pores and Carities
III. Sold inclusions
IV. Lack of Fusion
V. Surface and Profile
VI. Mechanical / Surface damage
VII. Misalignment.

12 . Types of Joint Preparation?
Bevel, V, J, S (Single & Double Sided)

13. ASME SECTIONS

a) SECTION I
Rules for Construction of Power Boilers

b) SECTION II
Materials
Part A – Ferrous Material Specifications
Part B – Nonferrous Material Specifications
Part C – Specifications for Welding Rods, Electrodes, and
Filler
Metals
Part D – Properties (Customary)
Part E – Properties (Metric)

c) SECTION III
Subsection NCA —- General Requirements for Division 1 and
Division 2
Division 1
Subsection NB-Class 1 Components
Subsection NC-Class 2 Components
Subsection ND – Class 3 Components
Subsection NE – Class MC Components
Subsection NF – Supports
Subsection NG – Core Support Structures
Subsection NH – Class 1 Component in Elevated Temperature Service- Appendices
Division 2 – Code for Concrete Containments
Division 3 – Containments for Transport and Storage of Spent Nuclear Fuel
and High Level Radioactive Material and Waste

d) SECTION IV
Rules for Construction of Heating Boilers

e) SECTION V
Non Destructive Examination

f) SECTION VI
Recommended Rules for the Care and Operation of Heating Boilers

g) SECTION VII

Recommended Guidelines for the Care of Power Boilers

h) SECTION VIII
Rules for Construction of Pressure Vessels
Division 1
Division 2 – Alternative Rules
Division 3 – Alternative Rules for Construction of High

Pressure Vessels

i) SECTION IX
Welding and Brazing Qualifications

j) SECTION X
Fiber – Reinforced Plastic Pressure Vessels

k) SECTION XI
Rules for In Service Inspection of Nuclear Power Plant
Components

l) SECTION XII

Rules for Construction and Continued Service of Transport Tanks.