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CWI Part B Practical Examination

CWI Part B
Practical Examination
1.

If all of the simulated porosity (drilled holes only, each hole assumed to be 3/64
inch in diameter) included in segment 2 of the simulated fillet weld specimen F1
was spread out and randomly distributed in a 12 inch length of this weld (no
additional porosity present), the weld would be:
(A) unacceptable because the sum of the porosity exceeds the acceptable
porosity allowed per inch.
(B) unacceptable because of the porosity.
(C) acceptable with the porosity so described.
(D) acceptable because the individual pores are too small to consider, when it
is randomly distributed.
(E) unacceptable because the porosity is linear.

2.

If all of the simulated porosity (drilled holes only, each hole assumed to be 3/64
inch in diameter) included in segment 2 of the simulated fillet weld specimen F1
was clustered in less than 1/2 inch of this weld (no additional porosity present),
the weld would be:
(A) acceptable because the individual pores are too small to consider.
(B) unacceptable because of the porosity.
(C) unacceptable because the sum of porosity exceeds the acceptable porosity
allowed per inch.
(D) acceptable with the porosity so described.
(E) unacceptable because the porosity is linear.

3.

If all of the simulated porosity (drilled holes only) included in segments 1 (1/16
inch and 1/32 inch holes), 3 (1/32 inch diameter holes), and 4 (1/16 inch
diameter holes) of simulated fillet weld specimen F1 were spread out and
randomly distributed in a 12 inch length of this weld(no additional porosity
present), the weld would be:
(A) acceptable with the porosity so described.
(B) unacceptable because the individual pores in segment 1 are unacceptable.
(C) acceptable because the porosity of segment 2 and 3 are too small to be
considered.
(D) acceptable because the porosity of segment 3 is too small to be
considered.
(E) unacceptable because the porosity exceeds the acceptable limits.

(B) unacceptable because the undersize. (B) acceptable because the individual pores are too small to consider. If all of the porosity (drilled holes only) included in segments 2 (3/64 inch in diameter holes). (B) unacceptable because the undercut exceeds 0. the weld would be: (A) acceptable because the weld has the proper amount of face reinforcement. 7. (C) acceptable because an underrun of 1/8 inch is allowed. and 3 (1/32 inch diameter holes). (B) shall be visually inspected immediately after the completed weld has cooled to the ambient temperature.016 inch). If the entire simulated fillet weld specimen F1 was specified to have a fillet size of 7/16 inch (Note: ignore porosity and all other discontinuities). the weld: (A) shall be visually inspected immediately after the weld is completed. (C) unacceptable because the porosity exceeds the allowable. (E) unacceptable because underrun of 1/16 inch is acceptable. (D) acceptable because the undercut does not exceed 1/32 inch. the weld would be: (A) acceptable because it has at least 3/8 inch fillet weld for the complete length. (D) shall have final visual inspection not less than 24 hours after the completion of the weld and the weld is cooled to ambient. (C) shall be visually inspected not more than 48 hours after the completion of the weld.010 inch. 5. 6.CWI Part B Practical Examination 4. If the entire simulated fillet weld specimen F1 was specified to have a 3/8 inch size and was welded transverse to the primary stress of the member (ignore all porosity). (D) unacceptable because the number of pores exceeds the allowable limit. of the simulated fillet weld specimen F1 were clustered in 1 inch of this weld(no additional porosity present). If the simulated fillet weld on specimen F1 was welded on ASTM A517 base metal. (E) unacceptable because the weld is larger than specified. (Note 1/64 inch = 0. (D) unacceptable because no underrun is allowed. (E) shall have final visual inspection not less than 48 hours after the completion of the weld and the removal of preheat. the weld would be: (A) acceptable with the porosity so described. (E) unacceptable because the porosity is linear. (C) unacceptable because the porosity so described. .

G2.also a root bend) was cut from the original weldment and was bent in place of "D". G3. which selection below is closest to the maximum measureable undercut? (A) 1/64 inch (B) 1/32 inch (C) 3/64 inch (D) 1/16inch (E) There is no measurable undercut only underfill. (D) Qualify the welder because the discontinuity was caused by a grinding defect. (B) is not qualified because the discontinuity exceeds the allowable criteria. The inspector shall: (A) not qualify the welder because the discontinuity does not meet the allowable criteria. (C) is qualified because the sum of discontinuities is less than the allowable criteria. or G4).CWI Part B Practical Examination 8. 10. The discontinuity on the welder qualification bend specimen D is not caused by incomplete fusion or slag. (E) None of the above. On the simulated groove weld specimen (G1. (B) qualify the welder because the discontinuity is less than 1/4 inch total length. Evaluating only the simulated bend specimens marked A (a root bend) and B (a face bend) that were made from a limited thickness welder qualification test. 9. the welder: (A) is qualified because the discontinuity is less than the allowable criteria. (D) is not qualified because the sum of discontinuities of both bend A and bend B exceeds the allowable criteria. . (C) qualify the welder because bend D was disregarded and another bend specimen (specimen marked C-. (E) is qualified because the discontinuities is less than 1/8 inch deep.

(C) check the weld profile and effective throat of the weld. You are inspecting the welding on a job where the welders are using SMAW with a low hydrogen electrode on A516 Grade 70 steel. G2.010 inch deep. The weld is: (A) acceptable because the primary stress is parallel to the weld and therefore the weld carries very little of the applied load.5 (B) E7014 (C) E7015 (D) E7024 (E) A5. On the simulated groove weld specimen (G1. G3. what is/are the discontinuity(ies) located approximately 2-3/8 inches from the right end? (A) arc strike (B) Spatter (C) excess reinforcement (D) arc strike and undercut (E) none of the above 13. (D) Unacceptable because the undercut is over 1/32 inch deep. (E) acceptable once the spatter is removed. 15. or G4). On the simulated groove weld specimen (G1. which selection below is closest to the maximum measureable underfill? (A) There is no underfill only undercut. which of the following should appear on line 6 of the PQR (use line 6 of Appendix 1 in the Book of Specifications)? (A) A5. (B) 1/64 inch (C) 1/32 inch (D) 3/64 inch (E) 1/16 inch 12. (B) unacceptable because the discontinuity is underfill and not undercut. (D) measure the size of the weld (E) perform any desired NDE tests. What shall be completed prior to performing a visual inspection of a weld? (A) remove slag and clean weld bead. or G4). On the simulated groove weld specimen (G1. or G4). (C) unacceptable because the undercut is over 0. . G3.CWI Part B Practical Examination 11. G2. G3. the weld was made parallel to the primary stress.1 14. G2. (B) measure the undercut at the toe of the weld. As you review the Welding Procedure Qualification Test Record (PQR).

(D) Arc strike and spatter. the weld is parallel to the direction of the primary stress the part.CWI Part B Practical Examination 16. The 1-3/4 inch leg size meets the weld size specified on the drawing. (E) The weld is unacceptable because of the arc strikes. or G4). or G4). the weld is unacceptable. Which of the following is the best statement concerning the results of the review? (A) The welding process is not a "Manual" processes. G2. G3. (B) The undercaut is greater than the allowed. examine only the first 2-1/4 inches of the weld. What is the maximum convexity that this weld can have? (A) A maximum of 3/16 inch convexity is allowable for this size weld. Starting from the left end of the weld. 17. (C) Excess reinforcement and undercut. (E) Convexity is not limited by the weld profile acceptance criteria when the weld transitions smoothly into the base plate. the weld is unacceptable. however. (B) A maximum of 1/8 inch convexity is allowable for this size weld. What are the discontinuities and is the weld acceptable or unacceptable? (A) Undercut and excess convexity. (B) Underfill and insufficient weld size. (B) The Electrode is not a group F4 or an A5. G2. there are at least 2 discontinuities located between 7/8 inch and 1-1/2 inches from the right end of the weld. (C) The electrode is not an all position electrode and therefore cannot be used in the 3G position. (D) The reinforcement height is greater than that allowed. On the simulated groove weld specimen (G1. (C) The weld underfill is greater than the allowed. 19. (E) Underfill and undercut. . 18. (C) A maximum of 5/16 inch convexity is allowable for this size weld. the weld is unacceptable. the weld is unacceptable. A welder performance qualification test record (Appendix II-B) is reviewing as part of a CWI's work in preparation for welding of a structural steel job requiring compliance to the Part B-Examination Book of Specifications.18 electrode/filler. the weld appears to have excessing convexity. You inspect a fillet weld on 2-1/2 inch thick plate. (D) Only concavity is limited by the Book of Specifications because it would reduce the throat size of the weld. G3. (D) The thickness range qualified is incorrectly listed for unlimited thickness. the weld is acceptable. Which of the following statements is true for this area and weld orientation? (A) The weld is acceptable. (E) Answers (A) and (B) are correct thus making the welder performance qualification record (WPQR) incorrect. On the simulated groove weld specimen (G1.

(B) Qualified. Is the welder qualified to weld a 5-inch Schedule 80 ASTM A106 Grade B open root pipe in the 2G position using the same electrodes? (A) Not qualified.CWI Part B Practical Examination 20. (E) Not quailfied. A welder was qualified on 6-inchSchedule 120 ASTM A53 Grade B pipe with a 60" open root joint in the 6GR position. With the even numbered side of the simulatd T-joint weld spcimen (F2. with or without backing. the welder is quailfied only for the position and the diameter used for the specifiec qualification test. What is the fillet weldsize at that point if no underrun is allowed? (A) 1/8 inch (B) 1/4 inch (C) 5/16 inch (D) 3/8 inch (E) 1/2 inch 21. the welder id qualified for all positions but not qualified for pipe sizes that are over 4-inches in diameter. measure 3 inches from the right end of the joint.135-inch thick) ASTM A524 Grade II sheet in the 1G position? (A) The welder is not qualified for a material less than 3/16-inch thick. the welder is qualified for the pipe size but not qualified for the 2G position. F6 or F8) facing you. Is the welder qualified to weld 10-gauge (0. 22. F4. (D) The welder is not qualified because an open root 60" joint on 10 gauge is too thin to prepare. . (C) Not qualifed. A welder was qualified usng the SMAW welding process on 3-inchSchedule 40 ASTM A106 Grade B open root pipe in the 6G position. the welder is quailfied for all positions and for unlimited wall thickness. the welder is quaified for all positions because of the 6G test and qualified for any pipe size over 3-inches in diameter. (B) The welder is qualified for sheet and plate in the 1G position and for thickness of 1/8 inch and over. (E) The welder id not qualified because the welder is only qualified for pipe and tube in the 6GR position. (D) Qualified. (C) The welder is qualified because both A53 and A524 are Group I steel.

(C) Qualified because the inspector can't see the rest of the Procedure Qualification Test rRecored. (C) Unacceptable because of excess convextity.CWI Part B Practical Examination 23. On a review of a completed Procedure Qualifcation Test Record (using the format of Appendix I)—line 1 lists ASTM A709 Grade 36 as the base metal.645 psi. and line 25 lists 63. or F9) facing you. The weld in this area is: (A) Unacceptable because of excess undercut. F7. F7. (E) Acceptable in this location. if segment B was removed from an 8 inch diameter Schedule 40 ASTM A53 Grdae B pipe. (E) Unacceptable for other reasons. (E) Unqualified because the tensile strength did not meet the required minimum strength for A709 Grade 36. or F9) facing you.line 24 lists 62. Using the simulated bend specimen. F5. F5.793 psi. (D) Acceptable because (A). 26. (D) Unacceptable because of excess concavity. Ist this procedure qualified or unqualified? (A) Unqualified because the A709 Grdae 36 base metal requires special procedures to match the notch toughness of the base metal. measure 5-1/2 inches from the left end. the bend specimen is: (A) Acceptable because the two discontinuties at the toe of the weld on the face bend are too small (under 1/8 inch) to reject the weld. (C) Acceptable because the bend is approximately 180O. (D) Qualified because the yeild strength is above that listed for A709 Grade 36. With the odd numbered side of the simulated T-joint fillet weld specimen(F3. measure from the left end of the weld between 3/4 inch and 1-1/4 inch. (B) Unacceptable because of excess overlap. (B) Acceptable because there is no corner crack. Which selection is closest to the size(s) of the legs of the weld fillet? (A) 1/2 inch x 5/8 inch (B) 5/16 inch x 3/8 inch (C) 5/8 inch x 3/4 inch (D) 1/4 inch x 1/4 inch (E) 5/16 inch x 5/16 inch 25 With the odd numbered side of the simulated T-joint fillet weld specimen(F3. 24. (B) and (C) are true. (B) Qualifed because the tensile strength is within the range listed for A709 Grade 36. . no rejectable defects are visible.

On the odd numbered side of the simulated T-joint fillet weld specimen(F3. 28. (E) None of the above because it is impossible to tell the direct of welding from the simulated specimen. what discontinuity(ies) exist(s) between 1-3/4 inch and 2-3/4 inches in the weld or adjacent base metal that would make the weld unacceptble? (A) arc strike and undercut (B) arc strike (C) spatter and undercut (D) undercut . What was (were) the weling direction(s). (A) It was welded left to right for the complete weld. With the odd numbered side of the simulated T-joint fillet weld specimen(F3. F4. What discontiuities exist in that area? (A) undercut (B) porosity and overlab (C) concavity (D) convexity (E) overlab and convexity 30. With the even numbered side of the simulated T-joint fillet weld specimen (F2. or F8) facing you. 29. (D) It was welded in both directions. first it was welded right to left to the crater and then left to right to the crater where the weld was ended without filling the crater. or F9) facing you. F5. (E) The weld is unacceptable because it has unacceptable undercut and is under size. F6. or F9) facing you. F5. F4. measure from 4 to 4-3/4 inches from the left end.CWI Part B Practical Examination 27. the welding direction(s) of travel (weld progression) is indicated by the bead appearance of the simulated fillet weld. (C) The weld is unacceptable because the undercut is too deep. (D) The weld is unacceptable because it is undersized. measure the weld size. F7. or F8) facing you. F6. The weld symbol for this weld specifies a 5/16-inch fillet weld which runs parallel to the primary stress. (C) It was welded in both directions. and measured from the left end. F7. first it was welded left to right to the crater and then right to left to the crater where the weld was ended without filling the crater. Which of the following statements is true for this weld and orientation? (A) The weld is acceptable. With the even numbered side of the simulated T-joint fillet weld specimen (F2. (B) It was welded right to left for the complete weld. (B) The weld is unacceptable because it has excess convexity.

2 root bends. The fillet weld on this specimen was underrun by the welder. (A) (B) (C) (D) (E) Inspecting the odd numbered side of the simulated horizontal position fillet weld specimen (F3. 2 root bends. (D) The wrong flux on a low hydrogen electrode. 2 reduced section tension (C) visual plus ultrasonic or radiographic. (E) There is no spatter in this area of the weld. F7. F7. 32. 4 side bends (D) ASTM A570 Grade 45 is a prequalified material and therfore no PQR or WPS is required (E) None of the above 34. 2 face bends. what would you expect to be entered on the lines 3. With the even numbered side of the simulated T-joint fillet weld specimen (F2. 2 root bends. or F9) facing you. 2 reduced section tension (B) visual plus ultrasonic or radiographic. 6. 10 and 13 respectively of the Welding Procedure Qualification Record (PQR) (Appendix I)? Line 3: semi-automatic line 4: 2F line 5: A5. 4. 2 face bends.20 Line 6: E71T-1 line 10: single pass line 13: NA Line 3: manual line 4: vertical line 5: A5. F5.20 Line 6: E71T-1 line 10: multiple arc line 13: NA Line 3: semi-automatic line 4: 2F line 5: A5.F5. 2 face bends. If there is weld spatter present at the termnation point (crater) of the last weld pass on the odd numbered side of the smulated T-joint fillet SMAW specimen (F3 .20 Line 6: E71T-1 line 10: multiple pass line 13: NA 33. F4. which made the arc unstable redulting in arc blow.20 Line 6: E71T-1 line 10: single pass line 13: down Line 3: semi-automatic line 4: horizontal line 5: A5. (B) A long arc. 2 reduced section tension. (C) Not enough preheat for the ambient temperature. 5. In accordance with Part B Examination Book of . what is the most likely cause? (A) Using an arc voltage aaand weld current that are too low.20 Line 6: E71T-1 line 10: multiple arc line 13: NA Line 3: manual line 4: horizontal line 5: A5.CWI Part B Practical Examination (E) no discontinuity is present in the specified area. or F9) facing you. A sigle V-groove weld joint procedure is to be qualified using 3/8-inch thick ASTM A570 Grade 45 plate. Which of the following tests are required to be listed on the Procedure Qualfication Test Record per Appendix XIII? (A) ultrasonic or radiographic. 31. F6. measure the weld size. or F8) facing you.

F4. visible liquid penetratnt testing 37. What discontinuity is revealed by the liquid penetratnt indication shown in photograph B? . fluorescent liquid penetratnt testing (D) water washable. fluorescent liquid penetratnt testing (C) Solvent removable. visible liquid penetratnt testing (E) Solvent removable. What NDE method is being shwon in photograph A? (A) water washable. 36. the maximum undercut measures: (A) 1/64 inch or less (B) 1/32 inch (C) 3/64 inch (D) 5/64 inch (E) Greater than 5/64 inch Please refer to the photographs included in the test kit when answering questions 36 through 41. What type of transducer is being used in the ultrasonic test illustrated in photograph D? (A) straight beam (B) angle beam (C) c-scan (D) shear beam (E) cannot be determined 39. what is the maximum weld size this weld meets? (A) 3/16 inch (B) 1/4 inch (C) 5/16 inch (D) 3/8 inch (E) uwwnmeasureable because of the undercut 35. What magnetic particle indication is shown in photograph C? (A) incomplete fusion (B) lamellar tearing at the toe of the face reinforcement (C) elongated linear porosity (D) cracter crack (E) incompelete penetration on the root pass. 38. fluorescent liquid penetratnt testing (B) Post emulsifiable. F6 or F8) facing you.CWI Part B Practical Examination Specfications. On the even numbered side of the silmultated T-joint weld specimen (F2.

and assume that it fractured at 25. (C) Yes. frcature occurred above the UTS. Using the simulated reduced section tension test spceimen that has been taken from a welding procedure qualfication test that was welded on ASTM A572 Grade 65 with FCAW E81T1-Ni.740 psi (C) 79. Examine the simulated unbroken reduced section tension specimen.750 pounds.370 psi (B) 61. . assume that it is broken from a welding procedure qualification test. fracture occurred below the specified minimum UTS. What should you enter in line 24 of Appendix I (select the closest answer)? (A) 54.CWI Part B Practical Examination (A) (B) (C) (D) (E) longitudinal toe crack transverse throat crack longitudinal crack longitudinal linear porosity transverse crack 40. What type of transducer is bing used in the ultrasonic test illustraded in photograph E? (A) straight beam (B) angle beam (C) c-scan (D) shear beam (E) cannot be determined 42.500 pounds of load. the fracture load as too high. (B) No. Assume that the tensile specimen fractures at an ultimate load of 26. What indication would most liklely be detected with the yoke positioned as shown in the photogragh G? (A) transverse indications (B) longitudinal indications (C) rounded indications (D) non relevant indications (E) subsurface indications 41. (D) No.600 psi 43.930 psi (D) 87. the fracture load was less than the calculated UTS. Will the tensile strength of the specimen qualfy the welding procedure specfication? (A) No.930 psi (E) 118.

what is the mnimum permissible root opening as fit-up? (A) 3/16 inch (B) 1/4 inch (C) 3/8 inch (D) 9/16 nch (E) 5/8 inch . 45.) (A) None (B) 50oF (C) 70oF (D) 150oF (E) 225oF 46. (D) not exceed a roughness value of 250 micro nches (E) meet the requirement of both (C) and (D) above. when the base metal is 5/8 inch thick and the mase metal temperature is 28 oF? (Hint: see footnote. grinding marks shall: (A) be finished in any direction (B) be finidhed transverse to the direction of primarry stress. On a weld requiring surafce finishing by grinding. For the joint designation B-U2-S. What is the minimum preheat temperature for API 5LX Grade X42.CWI Part B Practical Examination (E) No. yield strength is lower than UTS. 44. (C) be finished parallel to the direction of primarry stress if over 125 micro inches.