Upendra Tiwari

Definition- A  pressure vessel  is a container designed to hold gases or liquids at a  pressure  substantially different from the ambient  pressure . Design involves parameters such as maximum safe operating pressure  and temperature, safety factor,corrosion allowance and minimum design temperature (for brittle fracture). Reference Documents and Codes- Design code Purchase order specification Purchaser's standards Approved drawings ASME SEC VIII Div 1 or 2 ASME V ASME IX Note- ASME SEC VIII Div 1 for (15-3000) psi ASME SEC VIII Div 2  for (3000-10000) psi ASME SEC VIII Div 3  for more than 10000 psi 1. Division 1  is based on normal stress theory, 2. Division 2  is based on maximum distortion energy (Von Mises). Inspection Activities from start to finish- Material Inspection Fabrication Preparation for Welding Fit-Up Inspection Monitoring of Weld Conditions Back Gouging Inspection Visu...

            Reference Documents- 1.     Design code 2.     Purchase order specification 3.     Purchaser's standards 4.     Approved drawings 5.     API 650 6.     API 620 7.     API 653 8.     BS 2654 Inspection Activities from start to finish-              Material Inspection            Fabrication Inspection            Plate Preparation            Shell Courses and Base Plates containing Welded Seams            Post Weld Heat Treatment of Hot Formed Components            Assembly Inspection             Painting and Coating              ...

      Reference Documents- Design code Purchase order specification Purchaser's standards Approved drawings API 598 API 6D API 594 ASME / ANSI B16.5 API 600, 602, 603, 604 Following Inspection Activities from Start to Finish- Material Inspection Welding Inspection Post Weld Heat Treatment Visual and Dimensional Checking Low Pressure Air Test Hydrostatic Testing Post Hydrostatic Testing Final Inspection Name Plate Checking Painting and Coating Spare Parts, Loose Items and Accessories Reporting Release Note Packing, Marking and Shipping Final Book (Dossier) Other Topics- https://upendratiwari786.blogspot.com/2019/12/pmi-inspection.html https://upendratiwari786.blogspot.com/2019/12/difference-between-codestandard-and.html https://upendratiwari786.blogspot.com/2019/12/raw-material-identification-rmi-mtc.html https://upendratiwari786.blogspot.com/2019/12/visual-examination-as-per-code-asme-b.ht...

Reference Documents- Design code Purchase order specification Purchaser's standards Approved drawings ASME SEC-8 Div 1or 2 ASME V ASME IX  BS 5500 Following Inspection Activities from Start to Finish- Material Inspection Fabrication Preparation for Welding Fit-Up Inspection Monitoring of Welds Conditions Back Gouging Inspection: Inspection of Completed Weld Non Destructive Examination Weld Repair Post Weld Heat Treatment Mock-Up Test of Tube to Tube-Sheet Weld Visual and Dimensional Inspection of Tubes,Tube Bundle and Shell Tube Bundle Insertion Pneumatic Test Hydrostatic Testing: Final Inspection Name Plate Checking Painting and Coating Spares and Accessories Reporting Release Note Packing, Marking and Shipping Final Inspection (Dossier) The following final documents are reviewed and signed off by the third party inspector: As built, drawings if required  Manufacturer's data reports,  Material certificate or ce...

Radiography Inspection- Paragraph-136.4.5 When required by this Chapter (see Table 136.4), radiographic examination shall be performed in accordance with the requirements of Section V, Article 2, of the ASME Boiler and Pressure Vessel Code, except that the requirements of T-274 are to be used as a guide but not for the rejection of radiographs unless the geometrical unsharpness exceeds 0.07 in.  (2.0 mm). (A) Acceptance Standards.            Welds that are shown by radiography to have any of the following types of discontinuities are  unacceptable: (A.1) any type of crack or zone of incomplete fusion or penetration (A.2) any other elongated indication that has a length greater than (A.2.1) 1 ⁄ 4 in. (6.0 mm) for t up to 3 ⁄ 4 in. (19.0 mm), Inclusive (A.2.2) 1 ⁄ 3 t for t from 3 ⁄ 4 in. (19.0 mm) to 2 1 ⁄ 4 in. (57.0 mm), inclusive (A.2.3) 3 ⁄ 4 in. (19.0 mm) for t over 2 1 ⁄ 4 in. (57.0 mm) where t is the thickness of th...

Casting Definition- Casting is the process where metal is heated until molten.While in the molten or liquid state it is poured into a mold or vessel to create a desired shape. CASTING DEFECTS- Casting defects can be categorized into 5 types. 1. Gas Porosity: Blowholes, open holes, pinholes 2. Shrinkage defects: shrinkage cavity 3. Mold material defects: Cut and washes, swell, drops, metal penetration, rat tail 4. Pouring metal defects: Cold shut, misrun, slag inclusion 5. Metallurgical defects: Hot tears, hot spot. Other Topics- https://upendratiwari786.blogspot.com/2019/12/pmi-inspection.html https://upendratiwari786.blogspot.com/2019/12/difference-between-codestandard-and.html https://upendratiwari786.blogspot.com/2019/12/raw-material-identification-rmi-mtc.html https://upendratiwari786.blogspot.com/2019/12/visual-examination-as-per-code-asme-b.html https://upendratiwari786.blogspot.com/2019/12/difference-between-upstreammidstreamdow.html https://upendratiwari786.blo...

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Upstream' is about extracting oil and natural gas from the ground. Midstream' is about safely moving them thousands of miles. Downstream' is converting these resources into the fuels and finished products we all depend on. Previous Topics- https://upendratiwari786.blogspot.com/2019/12/pmi-inspection.html https://upendratiwari786.blogspot.com/2019/12/difference-between-codestandard-and.html https://upendratiwari786.blogspot.com/2019/12/raw-material-identification-rmi-mtc.html https://upendratiwari786.blogspot.com/2019/12/visual-examination-as-per-code-asme-b.html https://upendratiwari786.blogspot.com/2019/12/third-party-inspection-for-pressure.html https://upendratiwari786.blogspot.com/2019/12/main-defects-in-welding.html https://upendratiwari786.blogspot.com/2019/12/third-party-inspection-for-pressure.html https://upendratiwari786.blogspot.com/2019/12/radiography-test-film-inspection-as-per.html https://upendratiwari786.blogspot.com/2019/12/common-def...