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  • Users: pnrngv
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  1. pnrngv

    Fabrication Tolerance - Rectangular Tank Top plat flatness

    Hi, What is the recommended fabrication tolerances for the top plate flatness of the rectangular tank? There is no limitations or guidance in any of the standards. As a good practice +/- 5.0mm tolerance measured between the distance is < 500 MM should be ok ? Any expert opinion and references...
  2. pnrngv

    Clarification SS316/316L

    Hi, In Client general Piping Class standard it is mentioned as SS 316/SS 316L. It is not specified as Dual Grade. However, End user/Client deliverable (ISO, MTO and other documents) specified as SS 316L only. Reviewer is insisting on the Dual Grade requirement. Need some clarification on the...
  3. pnrngv

    SS Bolts for Incoloy 825 Valve

    Hi, Need expert metallurgy advice on galvanic corrosion for using stainless bolts on ASTM B564 N088825 (Incoloy 825) valve body-bonnet bolting. Project specification allows to use austenitic stainless bolting AISI Type 316 (per A193). However, need clarity with respect to galvanic corrosion...
  4. pnrngv

    Fiscal Metering

    Fiscal metering system thread481-243523 Hi..This is in continuation to the referred thread on Metering system. For metering system, I have few questions : 1.the importance of Pressure Balancing line at the Inlet at of each metering train and recommended sequence of operating this balancing...
  5. pnrngv

    Check Valve in Reciprocating Pump Circuit

    thread378-124275 Hi, There is a Check Valve installed in the discharge side of the reciprocating pump in the Chemical Injection Package. Working and Stand-by Pumps are connected to common header. During FAT of the packages, when testing the scenario of switching from Working (Pump A) to...
  6. pnrngv

    ASTM A351 CK3MCuN is a 6% Mo Super

    ASTM A351 CK3MCuN is a 6% Mo Super Austenitic Grade of Stainless Steel. For the Gas flowline service with 5.22% mole H2S, is this material is suitable for the service? How can we interpret this with ISO 15156-3 Standard. Please suggest

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