Wednesday, October 31, 2012

[MW:15818] HST Pressure variation in two pressure gauges

Dear experts,

1.while performing a Hydro static test in a pipe line/spool at two different elevation for a continuous one line ,one pressure gauge  has found one reading  at one elevation and another pressure gauge has found another reading at another elevation how much can be the pressure variation in the Two pressure gauges as temperature is also a factor how much temp variation can be allowed as per code???

2.How much percentage of  increase in testing pressure can be increased in testing a pipe line for HST for a specific Testing pressure given in the Drawings???  

3.Please clarify whether Socket weld is Circumferential welding or not define types of circumferential joints???


DASARI SRIKANTH

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