[MW:7276] Can we do painting prior to hydrotest?

Dear Members,

 

Our contractor has raised a design change request for painting prior to hydrotest.As per COMPANY specification,painting to be carried out after successfull complection of hydrotest,but contractor wants to do painting before hydrotest,can we accept this deviation? if  we want to accept the deviation,what criteria to be follow??

 

Our design conditions are 105 barg hydrotest pressure and design temp.85 deg.c,NDT is 10% MT & 10% RT.

 

Waiting for reply.Pl.respond ASAP.

 

Regards,

Satish

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