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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.

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

(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. the welder: (A) is qualified because the discontinuity is less than the allowable criteria. . (B) is not qualified because the discontinuity exceeds the allowable criteria. 10. (D) is not qualified because the sum of discontinuities of both bend A and bend B exceeds the allowable criteria. (B) qualify the welder because the discontinuity is less than 1/4 inch total length. The inspector shall: (A) not qualify the welder because the discontinuity does not meet the allowable criteria. 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. (C) is qualified because the sum of discontinuities is less than the allowable criteria.also a root bend) was cut from the original weldment and was bent in place of "D". (D) Qualify the welder because the discontinuity was caused by a grinding defect. The discontinuity on the welder qualification bend specimen D is not caused by incomplete fusion or slag. 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. 9. or G4). (E) None of the above. On the simulated groove weld specimen (G1.CWI Part B Practical Examination 8. G2. G3.

G2. (D) measure the size of the weld (E) perform any desired NDE tests. On the simulated groove weld specimen (G1. or G4). (E) acceptable once the spatter is removed.CWI Part B Practical Examination 11. (B) 1/64 inch (C) 1/32 inch (D) 3/64 inch (E) 1/16 inch 12. On the simulated groove weld specimen (G1. G3. the weld was made parallel to the primary stress. On the simulated groove weld specimen (G1. (B) measure the undercut at the toe of the weld. or G4).1 14.5 (B) E7014 (C) E7015 (D) E7024 (E) A5. or G4). You are inspecting the welding on a job where the welders are using SMAW with a low hydrogen electrode on A516 Grade 70 steel.010 inch deep. (B) unacceptable because the discontinuity is underfill and not undercut. . (D) Unacceptable because the undercut is over 1/32 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. G2. 15. which selection below is closest to the maximum measureable underfill? (A) There is no underfill only undercut. G3. As you review the Welding Procedure Qualification Test Record (PQR). G2. G3. What shall be completed prior to performing a visual inspection of a weld? (A) remove slag and clean weld bead. (C) unacceptable because the undercut is over 0. (C) check the weld profile and effective throat of the weld. 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. 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.

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

the welder is quaified for all positions because of the 6G test and qualified for any pipe size over 3-inches in diameter. A welder was qualified usng the SMAW welding process on 3-inchSchedule 40 ASTM A106 Grade B open root pipe in the 6G position.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. (D) The welder is not qualified because an open root 60" joint on 10 gauge is too thin to prepare. (C) Not qualifed. (B) The welder is qualified for sheet and plate in the 1G position and for thickness of 1/8 inch and over. 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. (E) The welder id not qualified because the welder is only qualified for pipe and tube in the 6GR position. 22. A welder was qualified on 6-inchSchedule 120 ASTM A53 Grade B pipe with a 60" open root joint in the 6GR position. (D) Qualified. F4. . measure 3 inches from the right end of the joint. the welder is qualified for the pipe size but not qualified for the 2G position. (E) Not quailfied. the welder id qualified for all positions but not qualified for pipe sizes that are over 4-inches in diameter. with or without backing. 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 is quailfied only for the position and the diameter used for the specifiec qualification test.CWI Part B Practical Examination 20. With the even numbered side of the simulatd T-joint weld spcimen (F2. the welder is quailfied for all positions and for unlimited wall thickness. (C) The welder is qualified because both A53 and A524 are Group I steel. Is the welder qualified to weld 10-gauge (0. (B) Qualified. F6 or F8) facing you.

(B) Unacceptable because of excess overlap. 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. F7. (B) Acceptable because there is no corner crack. (C) Unacceptable because of excess convextity.793 psi. (E) Unqualified because the tensile strength did not meet the required minimum strength for A709 Grade 36. 24. With the odd numbered side of the simulated T-joint fillet weld specimen(F3. and line 25 lists 63.645 psi. Using the simulated bend specimen. The weld in this area is: (A) Unacceptable because of excess undercut. . 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. 26. 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. 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. F5. (D) Qualified because the yeild strength is above that listed for A709 Grade 36. no rejectable defects are visible. (C) Qualified because the inspector can't see the rest of the Procedure Qualification Test rRecored. (B) and (C) are true. F7. measure 5-1/2 inches from the left end. (E) Unacceptable for other reasons. (E) Acceptable in this location. if segment B was removed from an 8 inch diameter Schedule 40 ASTM A53 Grdae B pipe. or F9) facing you.line 24 lists 62. (C) Acceptable because the bend is approximately 180O. (D) Acceptable because (A). (B) Qualifed because the tensile strength is within the range listed for A709 Grade 36. F5. measure from the left end of the weld between 3/4 inch and 1-1/4 inch.CWI Part B Practical Examination 23. (D) Unacceptable because of excess concavity. or F9) facing you.

(D) It was welded in both directions. F6. (E) The weld is unacceptable because it has unacceptable undercut and is under size. (C) The weld is unacceptable because the undercut is too deep. 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. and measured from the left end. F5. (B) It was welded right to left for the complete weld. F6. F4. 29. measure from 4 to 4-3/4 inches from the left end. F7. 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 . or F9) facing you. What was (were) the weling direction(s). With the even numbered side of the simulated T-joint fillet weld specimen (F2. Which of the following statements is true for this weld and orientation? (A) The weld is acceptable. (D) The weld is unacceptable because it is undersized. What discontiuities exist in that area? (A) undercut (B) porosity and overlab (C) concavity (D) convexity (E) overlab and convexity 30. With 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. or F8) facing you. or F9) facing you. On the odd numbered side of the simulated T-joint fillet weld specimen(F3. measure the weld size. F7. The weld symbol for this weld specifies a 5/16-inch fillet weld which runs parallel to the primary stress. 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.CWI Part B Practical Examination 27. (B) The weld is unacceptable because it has excess convexity. F5. With the even numbered side of the simulated T-joint fillet weld specimen (F2. (C) It was welded in both directions. (A) It was welded left to right for the complete weld. F4. the welding direction(s) of travel (weld progression) is indicated by the bead appearance of the simulated fillet weld. or F8) facing you.

31. (D) The wrong flux on a low hydrogen electrode. 10 and 13 respectively of the Welding Procedure Qualification Record (PQR) (Appendix I)? Line 3: semi-automatic line 4: 2F line 5: A5.F5. 5. F6. 4. 6. 2 root bends. 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. F4. 2 root bends. With the even numbered side of the simulated T-joint fillet weld specimen (F2. or F9) facing you. Which of the following tests are required to be listed on the Procedure Qualfication Test Record per Appendix XIII? (A) ultrasonic or radiographic. F7. 2 reduced section tension (B) visual plus ultrasonic or radiographic. (B) A long arc. 2 face bends.CWI Part B Practical Examination (E) no discontinuity is present in the specified area. 2 root bends. (E) There is no spatter in this area of the weld. (A) (B) (C) (D) (E) Inspecting the odd numbered side of the simulated horizontal position fillet weld specimen (F3. 32. 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. F5. The fillet weld on this specimen was underrun by the welder. measure the weld size.20 Line 6: E71T-1 line 10: single pass line 13: down Line 3: semi-automatic line 4: horizontal line 5: A5.20 Line 6: E71T-1 line 10: single pass line 13: NA Line 3: manual line 4: vertical line 5: A5.20 Line 6: E71T-1 line 10: multiple arc line 13: NA Line 3: semi-automatic line 4: 2F line 5: A5. 2 face bends. 2 face bends. In accordance with Part B Examination Book of . what would you expect to be entered on the lines 3. 2 reduced section tension. which made the arc unstable redulting in arc blow. 2 reduced section tension (C) visual plus ultrasonic or radiographic. A sigle V-groove weld joint procedure is to be qualified using 3/8-inch thick ASTM A570 Grade 45 plate. F7.20 Line 6: E71T-1 line 10: multiple pass line 13: NA 33. or F8) facing you. or F9) facing you. 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 . (C) Not enough preheat for the ambient temperature.

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. 36. fluorescent liquid penetratnt testing (D) water washable. What NDE method is being shwon in photograph A? (A) water washable. F4. On the even numbered side of the silmultated T-joint weld specimen (F2. fluorescent liquid penetratnt testing (C) Solvent removable. 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. fluorescent liquid penetratnt testing (B) Post emulsifiable. F6 or F8) facing you.CWI Part B Practical Examination Specfications. visible liquid penetratnt testing 37. What discontinuity is revealed by the liquid penetratnt indication shown in photograph B? . 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. 38. visible liquid penetratnt testing (E) Solvent removable.

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. (C) Yes. Will the tensile strength of the specimen qualfy the welding procedure specfication? (A) No.750 pounds.500 pounds of load. and assume that it fractured at 25.930 psi (E) 118. 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. the fracture load as too high.CWI Part B Practical Examination (A) (B) (C) (D) (E) longitudinal toe crack transverse throat crack longitudinal crack longitudinal linear porosity transverse crack 40. (D) No. the fracture load was less than the calculated UTS. 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 42.930 psi (D) 87.370 psi (B) 61.740 psi (C) 79. fracture occurred below the specified minimum UTS. assume that it is broken from a welding procedure qualification test. . Examine the simulated unbroken reduced section tension specimen. (B) No. Assume that the tensile specimen fractures at an ultimate load of 26.600 psi 43. What should you enter in line 24 of Appendix I (select the closest answer)? (A) 54. frcature occurred above the UTS.

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. 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 . 44.) (A) None (B) 50oF (C) 70oF (D) 150oF (E) 225oF 46. yield strength is lower than UTS. What is the minimum preheat temperature for API 5LX Grade X42. For the joint designation B-U2-S.CWI Part B Practical Examination (E) No. (C) be finished parallel to the direction of primarry stress if over 125 micro inches. (D) not exceed a roughness value of 250 micro nches (E) meet the requirement of both (C) and (D) above. On a weld requiring surafce finishing by grinding. 45.