sadsack5000
Petroleum
- Apr 13, 2016
- 4
Hello all,
I work as an inspection engineer on a very large LNG facility where a risk based inspection exercise has been partially completed. We have circuitized the facility, identified the damage mechanisms and determined inspection intervals. Unfortunately the writing of inspection workscopes and placement of CML's was bypassed and now we are 2-years into operation with only single line work orders in a CMMS to instruct us that an inspection is due.
I am severely resource constrained but have now been granted approval to hire some inspection engineers to execute the workscoping activities. For consistency I want to develop a procedure which outlines the NDT techniques that should be specified for different damage mechanisms identified in the RBI. For example, bottom of line CO2 corrosion use a UT scan or profile RT depending on the pipe diameter.
I have seen basic guidance in API 577 on NDT detection technique for weld defects and there is some low level guidance in the book Practical Non-destructive testing but nothing solid that I would reference in my procedure.
Basically I need a guide which lists the potential damage mechanisms in O&G and gives the suitable NDT technique
E.g.
CO2 BOL
CO2 TOL
Chloride SCC (SS)
Chloride Pitting (SS)
Deaerator Cracking
HIC
H2S
etc..
I work as an inspection engineer on a very large LNG facility where a risk based inspection exercise has been partially completed. We have circuitized the facility, identified the damage mechanisms and determined inspection intervals. Unfortunately the writing of inspection workscopes and placement of CML's was bypassed and now we are 2-years into operation with only single line work orders in a CMMS to instruct us that an inspection is due.
I am severely resource constrained but have now been granted approval to hire some inspection engineers to execute the workscoping activities. For consistency I want to develop a procedure which outlines the NDT techniques that should be specified for different damage mechanisms identified in the RBI. For example, bottom of line CO2 corrosion use a UT scan or profile RT depending on the pipe diameter.
I have seen basic guidance in API 577 on NDT detection technique for weld defects and there is some low level guidance in the book Practical Non-destructive testing but nothing solid that I would reference in my procedure.
Basically I need a guide which lists the potential damage mechanisms in O&G and gives the suitable NDT technique
E.g.
CO2 BOL
CO2 TOL
Chloride SCC (SS)
Chloride Pitting (SS)
Deaerator Cracking
HIC
H2S
etc..
