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100+ Free SOLAS Metal Fabrication Practice Questions

SOLAS Metal Fabrication Apprenticeship (QQI Advanced Certificate Craft, NFQ Level 6) practice questions are available now; exam metadata is being verified.

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2026 Statistics

Key Facts: SOLAS Metal Fabrication Exam

100

Practice Questions

OpenExamPrep

NFQ Level 6

QQI Advanced Cert Craft

SOLAS/QQI

4 years

Apprenticeship Length

SOLAS

7 phases

On/Off-the-Job Structure

SOLAS

Pass/Merit/Distinction

Phase Grading

SOLAS

Ireland

Metal Fabrication Trade

SOLAS

The SOLAS Metal Fabrication apprenticeship is Ireland's craft pathway to a QQI Advanced Certificate Craft at NFQ Level 6 (the SOLAS trade is officially 'Metal Fabrication'). It runs for four years across seven phases, alternating on-the-job phases with an approved employer and off-the-job phases at a training centre and colleges. Apprentices study welding processes (MMA, MIG/MAG and TIG), structural fabrication, plate and pipe work, thermal and CNC cutting, metallurgy and materials, fabrication drawing and development, distortion control and inspection. Each off-the-job phase is assessed by theory/knowledge tests, practical skills demonstrations and project work, graded Pass, Merit or Distinction under SOLAS criterion-referenced rules. This free prep includes 100 research-based practice questions with explanations and an AI tutor.

Sample SOLAS Metal Fabrication Practice Questions

Try these sample questions to test your SOLAS Metal Fabrication exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In Manual Metal Arc (MMA/SMAW) welding, what is the recommended maximum arc length relative to the electrode?
A.About twice the core wire diameter
B.About the same as the core wire diameter
C.About four times the flux coating thickness
D.As long as the arc remains stable, with no limit
Explanation: In MMA welding the arc length should be kept approximately equal to the diameter of the electrode core wire. A longer arc spreads the heat, reduces shielding from the flux gases, and promotes undercut, porosity and spatter.
2Which shielding gas is normally used for TIG (GTAW) welding of plain carbon and stainless steels?
A.Pure oxygen
B.Pure argon
C.Carbon dioxide
D.Compressed air
Explanation: TIG welding uses an inert shielding gas, most commonly pure argon, to protect the tungsten electrode and molten pool from atmospheric contamination. Argon is inert so it does not react with the weld metal or oxidise the tungsten.
3A weld shows a narrow groove melted into the parent metal along the toe of the weld, leaving it below the surrounding surface. What defect is this?
A.Undercut
B.Overlap
C.Incomplete penetration
D.Slag inclusion
Explanation: Undercut is a groove melted into the parent metal at the weld toe that is not filled by weld metal. It is caused by excessive current, too long an arc, incorrect electrode angle or too fast a travel speed, and acts as a stress raiser that reduces fatigue strength.
4Porosity in a weld is caused by which of the following?
A.Excessive travel speed only
B.Gas trapped in the solidifying weld metal
C.Using too small an electrode
D.Welding with the wrong polarity only
Explanation: Porosity is gas (hydrogen, nitrogen, oxygen, CO/CO2) becoming trapped in the weld pool as it solidifies, forming cavities. Common causes are damp electrodes, oil/grease/rust on the joint, loss of shielding gas, or excessive arc length.
5Why must low-hydrogen (basic-coated) MMA electrodes such as E7018 be stored in a heated oven or quiver?
A.To increase their melting rate
B.To keep the flux coating dry and avoid hydrogen pick-up
C.To soften the core wire for easier striking
D.To improve their electrical conductivity
Explanation: Basic low-hydrogen electrodes absorb moisture readily, and that moisture is a source of hydrogen which can cause hydrogen-induced (cold) cracking in the HAZ. Storing and re-drying them in a heated oven/quiver keeps the coating dry and the diffusible hydrogen low.
6On a welding symbol to BS EN ISO 2553, what does a triangle drawn ON the reference line (touching the arrow side identification line) indicate?
A.A fillet weld on the arrow side of the joint
B.A single-V butt weld
C.A spot weld
D.A surfacing (build-up) weld
Explanation: A right-angled triangle symbol on the reference line denotes a fillet weld, and its position on the line below the reference indicates the weld is on the arrow side of the joint. BS EN ISO 2553 governs the symbolic representation of welds on drawings.
7For a fillet weld, what is the relationship between the design throat thickness (a) and the leg length (z) for an equal-leg mitre fillet?
A.a = z
B.a is approximately 0.7 x z
C.a = 2z
D.a = z squared
Explanation: For an equal-leg, mitre-profile fillet weld the design throat thickness is the perpendicular from the root to the hypotenuse, equal to the leg length multiplied by cos45 (approximately 0.707). So a is about 0.7 times z. European design (BS EN 1993-1-8) specifies welds by throat thickness.
8Structural steel to BS EN 10025-2 designated S275JR has which yield strength and what does 'JR' indicate?
A.275 MPa minimum yield; impact tested at +20 C (27 J)
B.275 HB hardness; no impact requirement
C.27.5 MPa yield; tested at -20 C
D.275 MPa tensile strength; tested at -40 C
Explanation: In S275, the S denotes structural steel and 275 is the minimum yield strength in MPa (N/mm2) for thin sections. The 'JR' suffix specifies a Charpy V-notch impact value of 27 J at +20 C (room temperature). J0 is tested at 0 C and J2 at -20 C.
9What is the primary purpose of applying preheat to a thick section of medium-carbon steel before welding?
A.To increase deposition rate
B.To slow the cooling rate and reduce the risk of hydrogen (cold) cracking
C.To remove the need for a shielding gas
D.To increase the carbon content of the weld
Explanation: Preheat slows the cooling rate of the weld and HAZ, which allows hydrogen to diffuse out and avoids the formation of hard, brittle martensite. This reduces the risk of hydrogen-induced (cold) cracking, especially as carbon equivalent rises above 0.40.
10Which technique is MOST effective for controlling angular distortion when welding a long fillet-welded T-joint?
A.Increasing the current as high as possible
B.Using a balanced/back-step welding sequence and pre-setting the joint
C.Welding the entire length in one continuous fast pass
D.Removing all tack welds before welding
Explanation: Distortion is controlled by balancing shrinkage forces. A back-step or balanced welding sequence, pre-setting (pre-cambering) the joint against the expected movement, and adequate tacking/fixturing all reduce angular distortion. High heat input actually increases distortion.

About the SOLAS Metal Fabrication Practice Questions

Verified exam format metadata for SOLAS Metal Fabrication Apprenticeship (QQI Advanced Certificate Craft, NFQ Level 6) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.