Nguyễn Duy Biên

Scopes ASTM A234: specification for piping fitting of wrought carbon steel and alloy steel for moderate and high-temperature service. Ordering information and general requirement sees ASTM A960. Material __Killed steel, forging, bars, plates, seamless or fusion-welded tubular product with filler added. “fusion-welded tubular with filler added: SAW, GTAW (filler add), GMAW”. MTC shall be cleared marking specification number, grades and date. __If product comply another standard like, the MTC shall be stated test value, “ex. NACE MR 0175, MTC shall state hardness value, forming and heat treatment, read more in NACE MR0175 part 1, 2, 3. Manufacture __Forging or shaping operation by cold and hot forming. __NDE may be performed either prior to or after forming on welded product. __NDE reports must state in the MTC and available review by purchase. Heat treatment __Heat treatment shall be performed after forming, see para. 7 on ASTM A960 __ASTM A234 WPB most finished by normalizing, Annualiz...

(SFI/IWE 1.06 - Table 3: Classification of process gases for welding joints and related processes)   ISO 14175 - I1 : 100% Argon ISO 14175 - I3 : 30% He and rest Argon ISO 14175 - C1 : 100% CO2

Bolt torque calculation, lubrication factor, and nut factor to be determined in Appendix K of ASME PCC-1 2019. See formula (K-1) or (K-1M). Check flange rate and bolt size in Table L-1. Bolt stress determination in Appendix O. Normally bolt stress is approximately of 40-60% of yield strength, example ASTM A193 B7 – yield strength is 105ksi --> target bolt stress of 60% YS = 105*0.6 = 63ksi = 63x1000 = 63000 psi. Don’t worry no need to find  root areas, bolt size and K factors . See Table O-3.2-1. Calculation target bolt torque Tb – see note (b) of Table O-3.2-1 (ft-lb). Example , See Table O-3.2-1 for Flange NPS ½”, nut factor K=0.2 (k=0.2), bolt material ASTM A193 B7 (check yield strength in Table 2 of ASME SA-193 2019 --> Bolt stress = 105 60/100 = 63ksi) => Tb = 63 1.05 = 66 ft-lb. Next double check determination of bolt stress see example O-4.3 in ASME PCC-1 2019. SI Unit see Table O-3.2-1M.  

  ASME B16.20 - 2017 Gasket RJ ___Marking ASME B16.20 2017 - Section RJ-4 and Table RJ-4. ___Dimensional inspection: ASME B16.20 2017 - Section RJ-5 and Table RJ-5. ___Identification number: ASME B16.20 2017 - Section RJ-7 and Table RJ-5. ASME B16.20 - 2017 Gasket SW ___Marking ASME B16.20 2017 - Section SW-4 and Table SW-4.1. ___Dimensional inspection: ASME B16.20 2017 - Section SW-2 and Table SW-2.1. ___Color coding: ASME B16.20 2017 - Section SW-4.3 and Table SW-3-1. ASME SA-193/SA-193M - 2019 ___Marking SA-193/SA-193M - Section 15 and ASME SA-962/SA-962M Section 20.3; 20.8. ASME SA-194/SA-194M - 2019 ___Marking SA-194/SA-194M - Section 13 and ASME SA-962/SA-962M Section 20.4; 20.8. ASME SA-307 - 2019 ___Marking SA-307 - Section 13. ASME SA-325 - 2019 ___Marking SA-325 - Section 15.   ASME SA-563 - 2019 ___Marking SA-563 - Section 14.

  Dimensional inspection: ASME B16.11 2016 - Section 6. Tolerance: ASME B16.11 2016 - Section 7.

(Carbon steel) (Stainless Steel) (Stainless Steel) Dimensional inspection: ASME B16.9 2018 - Section 6 and Table 6.1. Tolerance: ASME B16.9 2018 - Section 11 and Table 11-1.

Dimensional inspection: ASME B16.5 2017 - Section 6. Tolerance: ASME B16.5 2017 - Section 7.

ASME A-516/A-516M   Markings verification ASME SA-20/SA-20M-2019 - Production Marking - Section 13.    Plate shall be legibly marked with (eg.): The specification number:  SA-516 . The manufacturer's name or brand:  BCK. Grade:   GR.70N. Heat number:  3-5642. Plate identifier:  111-1 . Heat treatment:  MT. Additional: length, client, dimension, LTV...   Eg.  SA516 Grade 70 MT LTV Normalized: MT = material heat treated, see Section 20 of SA-20 2019. LTV = Supplementary S5 "Charpy V-Notch Impact Test", see Supplementary Requirement S5 of SA-516 2019. Code marking Code marking:  Txxxx  - Plate. Die stamp may be stamped on the thickness with T>= 6mm for carbon steel and  T>= 12 mm for stainless steel unless otherwise by supplementary requirements.   Dimensional and visual inspection Dimension/masses:   ASME SA-20/20M - 2019 Section 14.   Transfer markings Guide to transfer mar...

ASME A-106/A-106M   Markings verification ASME SA-106/SA-106M-2019 - Production Marking - Section 25 ASME SA-530/SA-530M-2019 - production Marking - Section 24 Each length of pipe shall be legibly marked with (eg.) The manufacturer's name or brand:  BCK. The specification number:  ASME SA-106/SA-106M . Grade:  B. Heat number:  3-35727. ASME SA-106/SA-106M - Table 4:  NDE/2500 PSI . The length:  6000 MM. The OD:  NPS 3". The Schedule:  SCH XXS. The weight:  not applicable for NPS 3". Supplementary:  not applicable.   Note: This material  do not  cover welded pipe, see Section 1.1 of ASME SA-106/SA-106B. NPS 4" and larger shall marked weight class. Production analysis shall be made on the representative two pipes from each lot, see Section 9.1 of ASME SA-106/SA-106M.   Dimensional and visual inspection Forming/dimension/masses:   ASME B36.10M - 2018; ASME SA-530/SA-530M - Table X1 Tolerance:  ASMESA-...

H và W là hai điểm quan trọng trong ITP (Inspection and Test Plan) bạn phải thông báo cho các bên để kiểm tra, chứng kiến trước khi chuyển sang bưới tiếp sau: " H " - Hold Point " W " - Witness Point Điểm "H" sẽ yêu cầu cao hơn điểm "W" (để hiểu rõ thì đọc các định nghĩa trong ITP): "H" - yêu cầu các bên phải xác nhận trước khi chuyển bước sau, trong trường hợp Khách hàng và đại diện không có mặt thì nhà sản xuất phải đợi để xác nhận. "W" - yêu cầu các bên phải xác nhận, nhưng không nhất thiết phải dừng công việc. Hai điểm trên, đối với tình hình đại dịch Khách hàng không tham gia chứng kiến thì sao? Bạn có thể lựa chọn video call với điều kiện gửi thông báo (NOI) đúng lịch và xác nhận với Khách hàng. Trường hợp điểm "W" nhưng khách hàng không tham gia được thì sao? Cty phải kiểm tra đúng và xác nhận kết quả cho Khách hàng, không cần phải Holding đến khi khách hàng đến chứng kiến. Do đó, lúc xây dựng ITP anh em nên...