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  1. ChiangJaron

    ASME BPVC.V-2021 ARTICLE 1 MANDATORY APPENDIX III - III-112.6

    Dear All, Could any one help to explain the code meaning? III-112.6 Education, Training, and Experience Requirements for Initial Qualification. (b) Paragraph 6.2. Documented training or experience gained in positions and activities comparable to those of Levels I, II, and III [highlight...
  2. ChiangJaron

    Div2 3.10.3 (similar to UCS-85)

    Dear All, The material P1G1 has certified by supply as following general PWHT simulation test with mill sheet. If apply ASME SEC.VIII DIV.2, the material P1G1 perform PWHT as following as table 6.16 (reducing temperature and increase holding time), should we recertificate this material by...
  3. ChiangJaron

    Initial Level III qualified.

    Background A person has LV II certificate which qualified by any NDE training company as following ISO-9712. He also have enough training hour, experience, work experience and meet LV III condition of SNT-TC-1a. Question: May the person to be assigned a NDE LV III by top management without...
  4. ChiangJaron

    Initial Level III qualified.

    weldstan / EdStainless Refer to ASME V article 1 mandatory appendix III para.4.4, The NDE Level III, in the methods in which certified, shall have sufficient technical knowledge and skills to be capable of training and examining NDE Level I, II, and III personnel for certification in those...
  5. ChiangJaron

    Initial Level III qualified.

    All expert, Assumption, a new pressure vessel manufacturer. They would follow ASME system with U certificate. They would like to build NDE system with person, procedure, equipment and written practice. Of course, the personal qualification meet any Level II as ASNT SNT-TC-1A requirement. My...
  6. ChiangJaron

    UT ASME sec. V article 4

    Dear all, During CODE 2017 edition, If I applied sec.V article4 appendix VIII, its required and mandatory to follow appendix IX, too. Because the code mentions procedure qualification required per appendix IX. Now, CODE 2019 edition that delete the texts. Is still a mandatory required to...
  7. ChiangJaron

    SS321 material testing (will to PWHT)

    Dear EdStainless, Sometimes, the cladding vessel (carbon steel plus stainless steel clading) shall apply small nozzle in Stainless material. And the base metal, carbon steel, shall be PWHT whole parts together. Therefore, the stainless steel shall be PWHT together as above condition. And the...
  8. ChiangJaron

    UT required ASME sec.V article 4

    Dear all, code contents: T-434.1.5 Heat Treatment. The calibration block shall receive at least the minimum tempering treatment required by the material specification for the type and grade. If the calibration block contains welds other than cladding, and the component weld at the time of the...
  9. ChiangJaron

    SS321 material testing (will to PWHT)

    Dear All, I have some question about stainless material testing, special the material subject to PWHT. Pressure vessel with SS321 material including pipe and flange. All impact test requirement exempt from all rule of code, except UHA-51(c). The pressure vessel to be perform PWHT. Question 1...
  10. ChiangJaron

    SA-537 CL2 heat treatment and post-weld heat treatment

    Dear DVWE, Thanks for your information about questions 1 & 2. Regarding question 3, Your understood was correct. And more clear description as below my mentions, For plate and electrodes, we shall consider material failed risk after long term PWHT as you said for welding repair, PWHT failed...
  11. ChiangJaron

    2019 UCS-66 for flanges

    Dear ENG2194: The code provided any table is convenience for checking MDMT what we need. It's not only one way to exempt impact test. You may change your mind firstly and refer the steps in my understanding as, First step : you should assume all impact test are required. Second step : Find...
  12. ChiangJaron

    SA-537 CL2 heat treatment and post-weld heat treatment

    Deae Expert, Background Material SA-537 CL2 The product plate shall be delivery in heat treatment condition in Quenched and tempered. And the tempering temperature is request 595℃ minimum as code. Welding progress is SMAW with ASME SFA-5.5 E8016-G PWHT and Impact test are required...
  13. ChiangJaron

    tubesheet to shell welding

    Dear All, Please refer attached calculation sample that I evaluated the welding seam strength and allowable loading force. Someone can suggest me whether suitable or not.https://files.engineering.com/getfile.aspx?folder=cff46601-85ff-4e5f-912b-8ded44ea9eaa&file=cal.pdf
  14. ChiangJaron

    tubesheet to shell welding

    for 212197 The NDT only request by client to perform PT inspection after welding.
  15. ChiangJaron

    tubesheet to shell welding

    SnTMan, The description that welding for first layer shall be GTAW welding progress.
  16. ChiangJaron

    tubesheet to shell welding

    Dear All, I have a welding question about tubesheet to shell welding affairs. As my attached sketch, I would like confirm the welding shape whether defined a corner joint? Question 2, the welding shape whether accepted by ASME VIII Div.1...
  17. ChiangJaron

    Metric size bolt for ASME standard Flange (B16.5 or B16.47)

    Dear All, Can any one point out where accept or un-accept Metric size bolt used for ASME standard flange. Information From B16.5 para 1.6, it's only mention that "Except for diameter of bolts and flange bolt holes, combining values from the two systems constitutes nonconformance with the...
  18. ChiangJaron

    UG-119(c)(1) for lower case text.

    It's an urgent about nameplate text to follow up. Is it required markings on a nameplate shall be in characters not less than 5/32 in. (4 mm) high?? How about lower-case text? For example: Good Job technical.
  19. ChiangJaron

    ASTM material

    Dear All, I have a question about the ASTM material to apply in ASME pressure vessel construction. As my attachment, table II-200-1 of ASME section II part A. Please explain to me that "X" and "..." marking means on this table. Is it means that can not apply ASTM material for ASME VIII Div.1...
  20. ChiangJaron

    fiber elongation

    Dear All, I have a question about fiber elongation calculation for the material P No.1 Gr No. 1 and 2. And whether necessary stress relief or not after forming. For example, Material: SA-516-70 For pressure vessel head application : approx. 2:1 semi-elliptical Head inside dimension : φ650 mm...

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