Re: [MW:25381] LTCS PQR

in your case and assuming that your Code is ASME VIII-1, A333 for this thickness & temperature is not exempted from Impact test. What is the governing thickness of A350? You can avoid impact if you satisfy all conditions of UG-20

2016-09-08 8:21 GMT+03:00 Mustaq Ahmad <mustaqnk@gmail.com>:

Dear Experts

I am new for this job please help me

for PQR of LTCS

1) required thickness min is 6.35mm & dia is 12 inch

2) design press = 20kg/cm2
design temp = -45.6/37.8 degreee celcius
op press = 20 max
op temp = -40 degree celcius

3) material is pipe - A 333 GR 6(P1 &G1) and flange - A350 GR LF2 RF

4) service is LPG plant- Relief and blow down

now please suggest me
a) what is is the size of the test coupon can be selected(dia with schd) where can i find the exact length of weld required to carry out mechanical testing for this PQR?
b) is it possible to carry out the PQR for pipe to flange joint
c) what consumable can be selected for this if GTAW & SMAW ?

Regards
AHMAD

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Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

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