Coil pressure testing

[migueldiazch]

According with API 560. Fired Heaters for General Refinery Service, coils shall be hydrostatically tested to a minimum pressure equal to 1,5 times the coil design pressure, but I am confused if this criteria applies just for new Fired Heaters. What would be the criteria for Fired Heaters that have been in service for several years.

Bes regards,
M.D

 

[bhushan76]

Para 17.5.1.2 of API 560 mentions alternatives when hydrotesting is not practical for any reasons.But i doubt if this a practically possible for a convection coil of furnace which is already installed in furnace and hence all of coil is not accessible for visual inspection.

However if question above relates to a new coil being installed in the existing old furnace I think hydrotesting of coil as per Para 17.5.1.1 should not be a problem as the coil will be designed per current API edition.