국내 최저가 화상영어 추천(한달 5만원 20회 20분)
국내 최저가 화상영어 (한달 5만원 20회 20분)
국내 최저가 화상영어 추천(한달 5만원 20회 20분) 아직도 말 못하는 수업만 하고 계신가요? ‘영어는 공부’가 아니라 ‘언어’라는 점을 아셔야 합니다 때문에 당연히 원어민과 대화를 하면
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해외 검사원 자격시험 자료 공유합니다
먼저 영어 공부를 선행하시고 시험 준비하기를 권장드립니다 본인은 일전에 드릴쉽승선해서 검사한 경험있는데 영어가들리지 않아 곤란한경험이 여러번있었습니다
일단 해외자격시험은 국내 자격보다 어렵지 않습니다 다만 영어로 시험이 진행된다는 점이 어려울뿐입니다
API 시험을 치고나서 느낌은?
시험코드는 반듯이 정독해보시고 시험 치세요 대분분의 문제가 해당코드에서 출제 됩니다 그리고 공부방법은 기출문제를 풀어보고 그문제가 어디에서 나오는지 알아야 한다는 것입니다 그것은 추가코드를 공부할때도 마찬가지 입니다 문제를 풀때 앞의 목차를 보면서 어디에서 나올것 같은지 한번씩 생각해 보시기를 추천 드립니다
아직 공유안한 자료들 많이 있습니다 혹시 필요하신분들 댓글 달아주세요 (510,570, 653, ASNT L3, CWI 등...기타 각종 코드 필요하신분들 )
Note : try these questions after read API 653 once; these questions are prepared to under stand each and every section of the API653
1. The lowest average thickness ‘t’ 1 and least minimum thickness ‘t’2 are…………
a. The value of ‘t’ 1 shall be greater than or equal to ‘t’ minimum.
b. The value of ‘t’ 2 shall be greater than or equal to 60% of ‘t’ minimum.
c. Any corrosion allowance required for service until the time of next inspection shall be added to ‘t’ minimum and 60% of ‘t’ minimum
d. a & b
e. All of the above.
2. The maximum vertical length ‘L ’calculated by formula L= 3.7*√D*’t’2 where D is….
a. Pit area diameter.
b. Deepest pit diameter.
c. Tank diameter.
d. Annular diameter.
3. Identifies a procedure for installing a nozzle in the shell of tank that is in service.
a. API 653 does not allow this.
b. It is nothing buy hot tapping.
c. Very critical repair.
d. In service repair.
4. Widely scattered pits may be ignored provided……………
a. All pits should inspect and can’t ignore in any case.
b. Sum of their dimensions along any vertical line does not exceed 2 inch in an 8 inch length.
c. If each pit less than 2 inch length
d. Non of the above
5. When calculating required minimum thickness from formula ‘t’ mim . = 2.6*(H-1)*D*G / S*E or ‘t’ mim.= 2.6*H*D*G/S*E .in this formula H will be……….
a. Nominal height of tank
b. Height from the bottom of the length’ L’ from the lowest point of the bottom of ‘L’ of the locally thinned area to the maximum liquid level .
c. Height from the lowest point with in any location of interest to the maximum liquid level.
d. All of the above.
e. ‘b’&‘c’
6. From the above question(S) maximum allowable stress in Ibf/ sq.in. is smaller of 0.80Yor 0.429T from bottom and second course. When Y is unknown what will be your action?
a. Take only 0.429T to calculate S.
b. Use 30.000 1bf/ sq.in.
c. Must need all the value to calculate.
d. Consult with tank engineer.
7. What will be the allowable hydrostatic test stress (1bf/ sq .in) for A537 Class-2 material of 2nd course shall in tank?
a. 41,500
b. 37,800
c. 34,300
d. 30,000
8. What will be the allowable product stress for A516-65 material in shell lower to the roof
a. 27,900
b. 31,500
c. 65,000
d. 30,700
9. Where we can get maximum allowable shell stresses for reconstruction tanks?
a. Table 4.1 API 653
b. Table 3.2 API 650
c. 8.4. API 653
d. ‘a’&‘b’
e. All of the above.
10. When calculating minimum thickness, the weld joint efficiency for butt welled tank constructed according to API 650 10th edition.
a. 1.0
b. 0.85
c. 0.7
d. None of the above.
11. The following are some historical causes of the tank bottom leakage or failure. But not one of this is
a. Lack of an annular plate ring when required.
b. Inadequately supported sumps.
c. Weld joint cracking.
d. Thinner the bottom plate more the corrosion.
12. For bottom plate thickness measurement we are using MFL & UT. The quality of data obtained for these techniques is dependent on personnel, equipment and _________
a. Location where the measurement was taken.
b. Procedure
c. Inspector
d. All of the above.
13.
The 1st shell thickness of the tank is 1inch and its stress is 27000 lbf/ sq.in. what will be the annular plate thickness. (note: product specific gravity is 0.9)
a. 0.22 inch.
b. 0.50 inch.
c. 0.31 inch.
d. 0.10 inch.
e. Not enough information given to calculate annular plate thickness.
14. The 1st shell thickness of the tank is 1 inch and material is A537 Gr-2, what will be the annular plate thickness (note: product specific gravity is 1.1)
a. The original nominal thickness for the thinner tank shell plate shall be used for this assessment.
b. ½ inch.
c. The original nominal thickness of the thickest tank shell plate shall be used for this assessment.
d. 1 inch.
15. Industry experience and laboratory test have shown that a membrane stress in tank shell plate of ______________ 7 ksi is required to cause failure due to brittle fracture.
a. Equal to.
b. At least.
c. More than.
d. Less than.
16. If tank bottom / foundation design with means to provide detection and containment of bottom leak, minimum plate thick at next inspection shall be ________
a. 0.10 inch.
b. 0.05 inch.
c. 0.20 inch.
d. 0.025 inch.
e. 0.05 inch if applied tank bottom reinforced lining >0.05inch thick.
17. Inspection records shall maintain by owner/ operator. Completed record file consisting of three types of records, they are________________.
a. Design drawing, inspection history, and repair/ alteration history.
b. Construction, inspection and repair / alteration history.
c. Thickness data, construction records and history of tank.
d. All of the above.
18. Material identification by original contract drawings, API name plate or other suitable documentation __________________.
a. Require further identification.
b. Do not require further identification.
c. Should be documented in record.
d. None of the above.
19. There was a tensile test done to identify the plate and two specimen selected for this test, each test results value of 50 ksi and 30 ksi. Tensile strength required by specification is 45 ksi. This test is_______________.
a. Pass.
b. Fail.
c. Depends on code of construction.
d. Not enough data to deside.
20. Tank structural material shall meet ________________.
a. ASTM A7 as a minimum.
b. ASTM A36 or A992 as minimum.
c. ASTM A7 was a steel specification that was discontinued in the fourth edition of API 650: 1970.
d. If existing rolled structural as per ASTM A7 as a minimum and if new structural as per ASTM A36 or A992 as minimum.
e. All of the above.
21. For reconstruction tanks, the maximum design liquid level for product shall be determined by calculating the maximum design liquid level for the each shell course based on the specific gravity of the product. For this calculation allowable stress for the material shall be determined using API std 650, table 3-2, for material not listed in table 3-2 an allowable stress value of ___________.
a. Lesser of 3/4 yield strength or 3/7 tensile strength shall be used.
b. Higher of 3/4 yield strength or 3/7 tensile strength shall be used.
c. Lesser of 2/3 yield strength or 2/5 tensile strength shall be used.
d. Higher of 2/3 yield strength or 2/5 tensile strength shall be used.
22. The thickness of the replacement shell plate shall not be less than the greatest nominal thickness of any plate in the same course adjoining the replacement plate except where the adjoining plate is a __________________ plate.
a. Thinner insert.
b. Thickened insert.
c. Thickened patch.
d. Thinner patch.
23. In tank replacement, for existing shell plate ½ inch thick and less, the outer edge of the butt weld attaching the replacement shell plate shall be at least _________ from the outer edge of vertical joints or _____________ form the outer edge of horizontal.
a. 8t; 10 inch.
b. 6 inch; 6 inch.
c. 6 inch; 3 inch.
d. 12 inch; 12 inch.
24. To reduce the potential for distortion of an existing tank due to welding a replacement plate into an existing tank shell must be considered of _________.
a. Fit up.
b. Heat input.
c. Welding sequence.
d. All of the above.
25. In a tank shell plate some area severely corroded and it has to replace with same shell plate material, thickness of shell plate is ¾ inch. What will be the corner radius of the new insert replacement shell plate?
a. 6 inch.
b. 3 inch.
c. 4.5 inch.
d. 12 inch.
26. 1-inch shell corroded area is planned to repair with lap welded 1-inch patch plate, this patch planning to weld from outside of tank. What fillet weld size on the patch plate near shell to bottom welds? (existing corner weld size is one inch)
a. 3/16 inch.
b. Lesser of repair plate thickness or bottom plate thickness.
c. ¼ inch.
d. ½ inch.
e. ¾ inch.
27. The maximum vertical and horizontal dimension of the repair plate for lapped patch shell repair is ___________.
a. 36 inch and 72 inch respectively.
b. 48 inch and 72 inch respectively.
c. 24 inch and 64 inch respectively.
d. 56 inch and 80 inch respectively.
28. The minimum lapped patch shell repair plate dimension shall be 4 inch with a minimum and maximum overlap of ___________.
a. 2t : 6t
b. 1 inch: 8t.
c. 4t : 6t
d. 6 inch: 24 inch.
29. Lapped patch repair method shall not be used if exposure of the fillet welds to the product will produce ______________.
a. Product corrosion.
b. H2S corrosion.
c. Stress corrosion cracking.
d. Crevice corrosion.
30. When reinforcing plates are used over insert plate, the minimum diameter of the insert plate shall equal to the diameter of the __________.
a. Penetration diameter + 12 inch.
b. Reinforcing diameter + 12 inch.
c. Penetration diameter + 24 inch.
d. None of the above.
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