API 570 핵심 요약 5-6

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 )

 

 

국내 최저가 화상영어 추천(한달 5만원 20회  20분)

국내 최저가 화상영어 (한달 5만원 20회 20분)

 

 

1. PQR gives data used in PQR test and test results, and cannot be revised.

 

2. WPS gives parameters to be used in production job, and must be within ranges qualified by the PQR test.

 

3. Essential variables (EV), if changed require new procedure qualification. Non essential variables (NEV) may be changed in WPS without new PQR. 

 

4. Supplementary essential variables (SEV) are considered as (EV) only if there is impact strength requirement. Otherwise, they are “non-essential” variables.

 

5. Tensile test for procedure qualification is passed if failure is in:

   a. Weld metal at strength  >=  Base metal SMTS, or

   b. Base metal at strength  >= 95% of base metal SMTS

 

6. Bend test crack shall not exceed 1/8” in any direction.

 

7. Radiography can be used for performance qualification only and the acceptance criteria shall be as per ASME IX.

 

8. P-numbers represent parent metal groupings of similar composition and properties, i.e., similar strength and ductility.

      F-numbers give similar usability aspects of filler material. 

      A-numbers give similar chemical composition of weld metal. 

      In “As welded” condition.

 

9. For performance, 1G is flat, 2G is horizontal, 3G is vertical and 4G  is overhead position. Pipe 5G qualifies 1G, 3G and 4G, but pipe 6G qualifies all positions.

 

10. For acceptance criteria of production welds refer to Table 341.2.3 of B31.3  for:

                   

• Weld reinforcement
• For radiographic results 
• General acceptance of welds

 

11. Reasons for inspection are to ensure safety, reliability and to meet regulatory requirements.

 

12. On-stream inspections can reduce down-time by

 

• Extending plant run as inspection is done when plant is still “on”.
• If replacement of piping is required, fabrication of replacement piping can be done in advance.
• Reducing work-load and peak-manpower requirement during shutdown

 

13. UT thickness measurement at high temperature requires correction of about 1% for each 100°F.

 

14. Radiography has advantages like:

 

• Pipe insulation need not be removed for pipe wall thickness measurement.
• Small diameter piping, nipples, threaded connections can be inspected
• Permanent record is available

 

15. Flanged fittings and valves are made thicker than pipes. The thickness is given by:

   t = 1.5 X Cylindrical thk + 0.1” for 150 lb to 2500 lb rating

   S = 7,000 psi for new condition

 

16. For 4,500 lb rating a factor of 1.35 is used instead of 1.5 in above formula.

 

17. For retirement thickness of valves and flanged fittings the value of “S” is selected from stress tables of ASME B31.3.

 

18. For flanges as per B16.5, the raised face thickness of 1/16” (0.06”) is included in flange thickness for class 150 and 300 flanges. For flanges of higher rating raised face is ¼” (0.25”) and is additional to flange thickness.

 

19. Flanged joints and fittings are hydrostatically tested. Minimum Test pressure shall be 1.5 times the 100°F rating rounded to next higher 25 psi. This is also the maximum System-test pressure. 

 

20. To locate the correct pressure temperature ratings for any flange, first refer to Table 1A of B16.5, which gives which table to refer for which material.