(2025 EXAM) UW CUTTING & WELDING CH 1,2,4.

Question 1

Where is “Splash Zone” welding conducted?

Answer 1

Dry welding at the “splash zone” is generally conducted in a dry box or cofferdam at atmospheric
pressure.

Question 2

What welding type is most widely used in wet welding?

Answer 2

Shielded metal-arc welding is the most widely used process for wet welding.

Question 3

What dress is preferred for hand protection in U/W welding?

Answer 3

THICK, GAUNTLET-TYPE RUBBER GLOVES IN GOOD CONDITION, WORN OVER A PAIR OF
LATEX-TYPE GLOVES AFFORD THE BEST PROTECTION AGAINST ELECTRICAL SHOCK.

Question 4

What is the most dangerous location for a Diver to perform welding?

Answer 4

A DIVER IS AT RISK TO SEVERE ELECTRICAL SHOCK WHEN PERFORMING A CUTTING
OR WELDING OPERATION WHILE ONLY PARTIALLY IMMERSED IN WATER. HENCE, THE
SPLASH ZONE IS THE MOST HAZARDOUS LOCATION IN WHICH A DIVER CAN BE PLACED.

Question 5

At what depth are habitats required to be filled with an inert gas?

Answer 5

NO HABITAT WELDING WILL BE PERFORMED
IN AN AIR ENVIRONMENT AT DEPTHS GREATER THAN 60 FSW. HABITATS SHALL BE FILLED WITH AN INERT GAS AT DEPTHS GREATER THAN 60 FSW.

Question 6

When using the Self Consuming technique, tilt the electrode to a lead angle of ___° ± ___° in the line of intended weld?

Answer 6

Tilt the electrode to a lead angle of 45° ± 15° in the line of intended weld.