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Recent content by glothex

  1. glothex

    KHK standards for preessure vessels

    KHK is special authorized Inspector for High Pressure Gas Safety Law (HPGSL) Japan. Their inspector will inspect equipment when it is manufactured in Japan. But for foreign country, they have approved Inspector agency list for each country such as HSB as Mr. Deanc said, or LR. So you must ask...
  2. glothex

    Design Pressure

    I am sorry, my english is not so good. So in this case, I don't understand little bit what Mr. JStephen said. I sometime found "design pressure" is stated as "Full Water" and "Atmospheric". But I treated both different, when "Full Water", I do it like my question above. When "Atmosheric", I...
  3. glothex

    Design Pressure

    Thanks a lot. Even I got more knowledge about vacuum condition.
  4. glothex

    Design Pressure

    How do I decide pressure size when design pressure on data sheet is described as Full Water only. Do I have to decide pressure one by one according to the elevation of component for getting pressure head? Is it usual method?
  5. glothex

    Inspection Template for Ellipsoidal head

    I design pv with ellipsoidal head size ID=3500 mm, we calculate as per UG-32(d) t=(PD)/(2SE-0.2P). Then we order that head to sub-vendor, but sub vendor request R crown and R knuckle sizes, so we inform sub vendor that R Crown is 3150 mm and R Knuckle is 595 mm (Refer to UG-32(d) that an...
  6. glothex

    Inspection Template for Ellipsoidal head

    We made ellipsoidal head refer to an acceptable approximation of a 2:1 ellipsoidal head (one with a knuckle radius of 0.17D and a spherical radius of 0.90D). What is the of inspection template which shall be used? Using true shape of ellips 2:1 or shape with a knuckle radius of 0.17D and a...
  7. glothex

    Tube RT

    Refer to UNF-57(b): "In addition, for vessels constructed of titanium or zirconium and their alloys, all joints of categories A and B shall be fully radiographed in accordance with UW-51" Question: I use SB-338 Grade 2 (Ti Gr.2, Welded Tube) for a heat exchanger. Is logitudinal welding of that...
  8. glothex

    General requirement of Material Specification

    Dear All, Could someone help me? Some materials of ASME or ASTM has general requirement such as SA-6/A 6; SA-20/A 20; SA-480/A 480 Is it possibble material's maker makes SA-516 Grade 70 without refer to SA-20? (or SA-240 304 without refer to SA-480) Thanks in advance. Best regards, Glothex
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