WELDING AND GAS FREE ENGINEERING (SWBS 074)

Question 1

The Coast Guard requires certified welders to perform qualified welding, and brazing procedures in order to:

Answer 1

(1) Provide standardization across the service
(2) Ensure high quality welds
(3) Provide an adequate level of safety
(4) Develop a valid method to measure knowledge and skill level
(5) Provide consistent requirements between organic and commercial service providers

Question 2

WHAT guidance sets forth the requirements for qualification of Weld Procedure Specification (WPS) and provides a link to all approved procedures or inspection methods?

Answer 2

SFLC Technical Standard, 074-1 Welding and Allied Processes

Question 3

What organization may welder’s certification may be maintained through?

Answer 3

• Coast Guard
• American Welding Society (AWS)
• American National Standards Institute (ANSI)
• American Society of Mechanical Engineers (ASME)
• American Bureau of Shipping (ABS)
• NAVSEA or any other internationally recognized welding authoritative organization

Question 4

Coast Guard employees are Coast Guard certified welders when they have qualified to the following:

Answer 4

• approved procedure or inspection method
• sustained qualification maintenance requirements
• recorded the appropriate documentation in the Training Management Terminal (TMT), its successor, or equivalent

Question 5

Except as noted in Paragraph 6, all welds require inspection by ____________________.

Answer 5

a certified Non-Destructive Examination (NDE) inspector

Question 6

Can a welder inspect their own weld?

Answer 6

The welder shall not inspect their own weld.

Question 7

Certification Waivers. A waiver to perform welds or inspections may be submitted when the welder and/or NDE inspector are not certified per the provisions of this Manual. Waiver-approving authorities are:

Answer 7

• The SFLC-IOD Division Chief and Deputy are the approving authority for welding waiver requests for Advanced Ship System Instruction and Support Team (ASSIST) personnel.
• Coast Guard Engineer Officers (EO), Sector Engineering Section Chiefs, and Engineer Petty Officer (EPO) are the approving authority for welding waiver requests for Coast Guard personnel assigned to their units.
• Coast Guard Base Naval Engineering Department Heads (NED) are the approving authority for welding waiver requests for Maintenance and Weapons Division (MWD) and Industrial personnel.
• The SFLC Coast Guard Yard Industrial Manager is the approving authority for welding waiver requests for Coast Guard Yard personnel.

Question 8

Non-Waivable Welds. Except during operational emergencies, only Coast Guard members (including Coast Guard Reserve serving on active duty and civilian employees) with an active certification in the appropriate procedure are allowed to perform non-waivable welds. The following welds are considered non-waivable:

Answer 8

• a. Primary hull structure (underwater body and freeboard)
  1. Hull shell plating (and attached frames, girders, and stiffeners)
  2. Structural deck plating (and attached stanchions and stiffeners)
  3. Water tight bulkheads (and attached stiffeners)

NOTE: Paragraph 5a pertains to welding OF primary hull structure (remove/replace, crop/renew) and does not limit welding ON primary hull structure (studs, brackets, pads, fixtures, etc.).

• b. Pressure vessels (any operating pressure)
• c. Pressurized piping (above 500 psi operating pressure)
• d. Propulsion and generator shafting.
• e. Propellers and impellers
• f. All materials other than steel, stainless steel, aluminum, copper, CuNi, brass and bronze
• g. All materials with yield strength over 100 (kilopounds per square inch) KSI, such as flight decks and buoy decks

Question 9

Name the process to follow when a weld inspection by a certified NDE inspector may be waived?

Answer 9

TS-074-01 waiver process

Question 10

If a weld inspection by a certified NDE inspector is waived via the TS-074-01 waiver process. Who may inspect the subject weld?

Answer 10

• The welding supervisor
• EO
• EPO
• Port Engineer

Question 11

When a weld inspection by the NDE is waived via the TS-074-01 waiver process and conducted by the Weld Supervisor, EPO, EO or Port Engineer. What guidance must be use to complete the inspection?

Answer 11

• AWS B1.11
• MIL-STD-2035A

Question 12

All non-waivable welds that are performed under operational emergencies shall be inspected by a _______ once the vessel is dockside.

Answer 12

Certified Non-Destructive Examination (NDE) Inspector

Question 13

All welding and allied processes performed by Commercial Contractors on cutters and boats shall be conducted in accordance with their respective contracts that should refer to the _________ describing those processes.

Answer 13

SFLC specifications

Question 14

Can the Gas Free Engineering process and Confined Space Inspection process be waivied?

Answer 14

The gas free engineering and confined space inspection process may never be waived.

Question 15

Prior to starting any welding, cutting, burning, or other thermal processes in voids, tanks, closed compartments, or poorly ventilated spaces, those spaces shall be determined to be gas free, safe for personnel and safe for hot work in accordance with?

Answer 15

Technical Standard 074-2, Gas Free Engineering