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WorksheetsEMERGENCY OR TEMPORARY REPAIR USING ELECTRIC ARC AND GAS WELDING
Total questions: 15
Worksheet time: 10mins
During heavy weather, a crack develops on a deck plating near a welded bracket. The team decides to weld a temporary patch. Which factor should guide the shape and placement of the doubler plate?
Stress load path
Paint condition
Deck lighting angle
Weld bead color
A seawater pipeline develops a pinhole leak close to a flange. Hot work is permitted. Which temporary welding action prevents distortion that could worsen the leak?
Low-heat pass
Wide arc sweep
Fast travel speed
Deep root burn
A winch foundation bracket shows a progressive fatigue crack. The repair team plans an emergency weld while the vessel is underway. What is the primary reason for unloading the equipment before welding?
Reduce stress concentration
Improve welder posture
Avoid glare from motion
Protect nearby cabling
A minor hull crack is found just above the waterline. Before applying a temporary patch, the crew drills stop-holes at both ends. What is the purpose of the stop-holes?
Arrest crack growth
Support filler cooling
During the emergency sealing of a thin fuel overflow line, the engineer chooses gas welding instead of SMAW. What justifies this selection?
Lower heat impact
Faster slag removal
Wider bead pattern
Higher spark density
A distorted steel guard on a mooring winch is jamming the drum. Which action justifies the use of oxy-acetylene cutting as part of the emergency repair?
Free critical movement
Reduce crew fatigue
Enhance paint adhesion
Stabilize deck heating
A fractured grab-rail on a gangway must be welded urgently. The area shows salt contamination. What is the technician’s first action before welding the repair?
Remove chloride film
Remove deck signage
Rotate gangway wheels
Test deck vibration
A temporary weld is being planned on the hatch-cover stiffener after impact damage. What welding approach minimizes further deformation?
Short intermittent beads
Wide continuous passes
During emergency padeye repair for cargo lashings, the steel shows slight buckling. What determines whether temporary welding may proceed?
Material soundness
Bolt thread pitch
Paint gloss index
Lighting direction
A crack on a pipe bracket reappears shortly after an emergency fillet weld. What is the most likely reason for failure?
Load not isolated
Rod too expensive
Metal color faded
Joint too polished
A padeye crack is found during cargo operations. The surface is oily, and vibration from the winch continues. Which action ensures a safe temporary weld?
Weld as found with slightly higher heat
Secure machinery, clean surface, add support
Patch directly without removing vibration
Cool the weld with water during operation
Oil or grease must never be used on oxygen fittings because:
It may cause explosion risk
It lowers gas pressure rate
It blocks cylinder valves
It damages the hose seal
A fire watch is required during hot work to:
After work, the operator must:
Shut valves and bleed hoses
Tilt cylinders for draining
Cover torch with wet cloth
Remove regulators quickly
When cutting a 10 mm steel plate, gas pressure must be:
Set according to plate thickness
Maintained at lowest safe rate
Equal to acetylene flow rate
Adjusted by sound of flame
