The two primary concerns when welding on in-service piping and equipment are
______________________ and __________________.
- Burn thru and Cracking
- Rupture and Cracking
- Burn thru and Rupture - correct answersBurn thru and Cracking
To minimize burn through, the first weld pass to equipment or piping less than ________________ thick
should be made with ________________________ diameter welding electrode to limit heat input.
- 1/2 in.,3/16 in. or smaller.
- 1/4 in.,3/32 in. or smaller.
- 1/4 in., 3/16 in or smaller.
- ... - correct answers1/4 in.,3/32 in. or smaller.
What type of welding electrode should only be used when welding on in-service piping or performing
hot tap operations?
- Cellulose electrodes.
- High hydrogen electrodes.
- E7016, E7018 and E7010.
- E7015, E7018 and E7016. - correct answersE7015, E7018 and E7016.
Corrective action for a non-conformance will depend upon?
- the nature of the non-conformance and its impact on the properties of the weldment
- size of discontinuity causing the non-conformance
- potential consequence of the non-conformance
- probability of the non-conformance causing weld to fail - correct answersthe nature of the non-
conformance and its impact on the properties of the weldment
,Tasks that a welding inspector should perform;
- task prior to welding, during welding and upon completion of welding
- QC and QA activities
- review of welding procedures and welder qualifications
- Approve repair procedures - correct answerstask prior to welding, during welding and upon completion
of welding
Visual inspection of a piping weld requires a minimum light intensity of;
- 1000 μW/cm2
- 100 foot candles
- 1000 foot candles
- 100 μW/cm2 - correct answers100 foot candles
Which of the following electrode designations can be a filler metal for either GTAW or GMAW welding
process?
- E6010
- E70T-1
- EX71T-1
- ER70S-2 - correct answersER70S-2
What does the "S" mean in the electrode identification system for GMAW and GTAW welding processes?
- Sulfur
- Solid wire
- Solid Flux
,- Strength - correct answersSolid wire
What does the "XX" mean in the electrode identification system for GMAW or GTAW welding processes?
- Strength
- Electrode wire
- Chemical Composition
- Solid wire - correct answersStrength
Personnel "shall" have a vision test performed.....
- Every 6 months
- Every 90 days
- Annually
- Bi-annually - correct answersAnnually
Personnel "shall" have a annual vision test to assure natural or corrective near distance acuity. They must
be able to read the _______ letters on the standard ____________ or equivalent near vision test.
- j-1, Yager test
- l-1, jaeger test
- H-1, jaeger test
- j-1, ... - correct answersj-1, ...
When welding on in-service piping the flow rate of a liquid or gas in the pipe should be between....
- 1.2-4.0 ft per sec
- 1.3-4.0 ft per sec
- 1.3-4.1 per sec
, - 1.5-4.0 ft per sec - correct answers1.3-4.0 ft per sec
Hot tap and in-service welding operations should be performed with only....
- High hydrogen consumables
- No hydrogen consumables
- Low hydrogen consumables
- Low chloride consumables - correct answersLow hydrogen consumables
Globular transfer is a mode of what type of welding process?
- FCAW
- GMAW
- SMAW
- GTAW - correct answersGMAW
Which welding process has a low tolerance for contaminants on filler and base metals?
- GMAW
- GTAW
- SMAW
- FCAW - correct answersGTAW
When using SMAW welding process, deposition rates are lower than which of the following processes?
- SAW
- GMAW
- FCAW
- All of the above - correct answersAll of the above