Section 8C - Repairs, Alterations & Rerating ( API 570 pg 67-70)

Question 1

1. During a pipe repair or alteration, when can Controlled-Deposition Welding be used as an alternative for post-weld heat treating?

A. For P1 and P3 materials
B. For P1, P3 and P4 materials
C. For P3, P4 and P5 materials
D. For P1 through P15F materials
E. Whenever inspector approves the procedure

Answer 1

B. For P1, P3 and P4 materials

Question 2

2. Welding is performed on an in-service pipe. What welding processes can be used when using Controlled-Deposition Welding as a substitute for PWHT?

A. Only SMAW
B. Only SMAW & SAW
C. Only SMAW & GMAW
D. Only SMAW & GTAW
E. Only SMAW, FCAW, GMAW & GTAW
F. Any welding process that Engineer approves

Answer 2

E. Only SMAW, FCAW, GMAW & GTAW

Question 3

3. Which of the following must be done when performing Controlled-Deposition Welding as a substitute for postweld heat treating? (Open Book)

A. Develop and qualify a specific WPS for each application
B. During welding, maintain a 400°F interpass temperature
C. After welding, perform an UT flaw detection examination
D. After welding, perform a pressure test

Answer 3

A. Develop and qualify a specific WPS for each application

Question 4

4. Controlled- Deposition Welding is going to be substituted for postweld heat treating. When developing the weld procedure, the test coupon must be the same: (Open Book)

A. Material specification as the repair weld, but grade can be different
B. Material specification and the same grade as the repair weld
C. P-Number as the repair weld, but material specification can be different
D. P-Number and thickness as the repair weld

Answer 4

B. Material specification and the same grade as the repair weld

Question 5

5. SMAW temper-bead welding is performed in lieu of a PWHT. What preheat maintenance temperature should be maintained at the completion of welding? (Open Book)

A. 250°F +/- 50°F
B. 300°F +/- 50°F
C. 400°F +/- 50°F
D. 500°F +/- 50°F

Answer 5

D. 500°F +/- 50°F

Question 6

6. If Controlled-Deposition Welding is performed using SMAW, the preheat must be maintained after welding. What is the purpose of this preheat heat maintenance?

A. Out-gassing any hydrogen that is in the weld
B. Relief stresses in the weld
C. Maximize the amount of Pearlite in the weld metal
D. Reduce the size of the grains in the weld metal

Answer 6

A. Out-gassing any hydrogen that is in the weld

Question 7

7. When Controlled-Deposition Welding is performed as a substitute for PWHT: (Open Book)

A. Additional supporting information can be found in WRC Bulletin 412
B. The repair plan must be authorized by the owner/ user
C. Only the SAW and GMAW welding processes are allowed
D. A contract repair organization can use an appropriate weld procedure that was previously qualified by the owner/ user

Answer 7

A. Additional supporting information can be found in WRC Bulletin 412

Question 8

8. A weld procedure is being qualified to perform Controlled-Deposition Welding as a substitute for PWHT. The coupon and test weld are 1.5” thick. What wall thickness and weld thickness are qualified for this procedure?(Thicknesses are listed below)

A. Wall <1.5”, Weld <1.5”
B. Wall <2”, Weld <1.5”
C. Wall <3”, Weld <2”
D. Wall <3”, Weld <3”
E. Wall <8”, Weld <1.5”

Answer 8

A. Wall <1.5”, Weld <1.5”

Question 9

9. A weld procedure is being qualified to perform Controlled-Deposition Welding as a substitute for PWHT. The coupon and test weld are 3” thick. What wall thickness and weld thickness are qualified for this procedure?(Thicknesses are listed below) [Open Book]

A. Wall <3”, Weld <3”
B. Wall >2”, Weld <3”
C. Wall <3”, Weld <2”
D. Wall >2”, Weld <2”
E. Wall 2-8”, Weld 1-3”
F. Who knows? Can’t read the chart!!!!!

Answer 9

B. Wall >2”, Weld <3”

Question 10

10. Materials used in making repairs and alterations to piping systems shall be:

A. NDE tested for defects prior to welding
B. Of a known weldable quality and conform to the applicable code
C. Identical to the base metal materials
D. Have a yield stress of less than 40,000 PSI

Answer 10

B. Of a known weldable quality and conform to the applicable code

Question 11

11. After a repair is completed, a pressure test shall be performed if deemed necessary by:

A. The authorized inspector
B. The piping engineer
C. Both the inspector and piping engineer
D. Either the inspector or piping engineer

Answer 11

A. The authorized inspector

Question 12

12. Pressure tests are normally required after:

A. All repairs and alterations
B. Major repairs
C. Alterations
D. Major repairs and alterations

Answer 12

D. Major repairs and alterations

Question 13

13. Substituting appropriate NDE procedures for a pressure test after an alteration may be done only after consulting with the:

A. Authorized inspector
B. Piping engineer
C. Both the inspector and engineer
D. Either the inspector or piping engineer
E. Both the engineer and owner/ user

Answer 13

C. Both the inspector and engineer

Question 14

14. A pressure test will be performed on an existing insulated 8 NPS line that is 650 feet long. The insulation is 2-1/2” asbestos. The pressure test is done to provide some assurance about the integrity of the piping system. What is a cost-effective way to perform this pressure test?

A. Strip all the insulation and perform a hydrotest
B. Strip all the insulation at the joints and perform a hydrotest
C. Leave insulation in place and do a hydrotest. Keep pressure on for a long time. If the pressure on the gauge does not drop significantly, assume there is no leak
D. Leave insulation in place and perform a pneumatic test. Soap all the insulation joints
E. Do not perform the test, but falsify the reports & sign the papers that you witnessed the test. You’ll get a nice kick back. But beware, if you are found out, your API 570 cert will be deactivated by API

Answer 14

C. Leave insulation in place and do a hydrotest. Keep pressure on for a long time. If the pressure on the gauge does not drop significantly, assume there is no leak

Question 15

15. When performing socket-welding, what is the minimum required gap between the pipe end and the socket-weld fitting?

A. 1/32”
B. 1/16”
C. 1/8”
D. 3/16”

Answer 15

B. 1/16”

Question 16

16. During an alteration, a tie-in will be made with a socket-weld fitting. It is impractical to pressure test this weld. Which is NOT a requirement for exempting this pressure test? (Open Book)

A. The final pass must be examined with either MT or PT
B. Minimum weld size is 3/16”
C. Weld must have a minimum of two passes
D. Work must be authorized by the authorized inspector

Answer 16

B. Minimum weld size is 3/16”

Question 17

17. A butt-weld is made in the field in a piping system where pressure testing is impractical. What is the minimum NDE that is required?

A. 100% RT or UT final weld
B. MT or PT the root pass
C. MT or PT root and final passes
D. MT or PT the root and final passes, and 100% RT or UT final weld

Answer 17

D. MT or PT the root and final passes, and 100% RT or UT final weld

Question 18

18 A socket-weld is made in the field in a piping system where pressure testing is impractical. What is the minimum NDE that is required?

A. 100% RT or UT final weld
B. MT or PT the root pass
C. MT or PT the final pass
D. MT or PT root and final passes
E. MT or PT the root and final passes, and 100% RT or UT final weld

Answer 18

C. MT or PT the final pass

Question 19

19. During repairs or alterations, a butt-weld is made in the field in a piping system where pressure testing is impractical. If UT flaw detection is used to examine the weld, what are the needed qualifications for the examiner?

A. SNT-TC-1A Level 2 or 3
B. SNT-TC-1A Level 3
C. TNS CT-A1 Level eno, owt or eerht
D. Industry Qualified UT Angle Beam Examiner

Answer 19

D. Industry Qualified UT Angle Beam Examiner

Question 20

20. Rerating calculations of a piping system must be performed by the:

A. Authorized inspector
B. Piping engineer
C. Inspector or piping engineer
D. Piping engineer or a fabrication engineer

Answer 20

C. Inspector or piping engineer

Question 21

21. A pipe is rerated to a higher pressure and temperature. After the rerate, a pressure test is:

A. Always required
B. Never required
C. Required only if the inspector believes one is necessary
D. Required, unless records show that a pressure test was done in the past at pressure greater than or equal to the test pressure needed for the new conditions

Answer 21

D. Required, unless records show that a pressure test was done in the past at pressure greater than or equal to the test pressure needed for the new conditions

Question 22

22. A piping system is rerated that increases the design temperature from 500°F to 650°F. Which of the following is the LEAST important concern?

A. Increased corrosion
B. Lower allowable stresses
C. Metallurgical degradation
D. Piping flexibility

Answer 22

C. Metallurgical degradation

Question 23

23. If a piping system is rerated to a temperature below the ambient temperature, what type of test may be required by the applicable rating code?

A. Charpy impact test
B. Guided bend test
C. PMI test
D. Tension test

Answer 23

A. Charpy impact test

Question 24

24. Who is a ratoncito 🐭?

A. Walter
B. Sarah
C. Raheem
D. Corey
E. All of the above

Answer 24

E. All of the above

*Code conflict, answer C is also a correct answer.