Standard Inspection Procedure for Ultrasonic Thickness Measurement
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Standard Operating Procedure Ultrasonic (UT) Thickness Inspection
1.0 Scope
Ultrasonic (UT) examination is performed to provide the inspection and testing coverage necessary on the pipe weld and wall thickness on Ferrous material. Ultrasonic (UT) examination may consist of the following inspection and testing methods. a) Cabiration UT Equipment (Use standard block) b) Preparation visual inspection& pipe surface c) Utrasonic testing of the external pipe surfaces with use couplan, check display ( screen) on UT Equipment, then analysis and record
2.0 Personnel Qualifications
2.1 Personnel performing this procedure shall be classified as a minimum, Level I. 2.2 Level I inspectors shall be under the supervision of an on-site Level II or Level III supervisor.
3.0 Reference Documents
3.1 The following documents are referenced in preparation of this procedure and should be available on the job site location. ASME SEC V, VIII API 5L API 5CT API 5D Customer Specification, as applicable if any
4.0 Equipment 4.1 Equipment required to perform ultrasonic inspection as applicable, is as follows: 1. UT wall thickness DM4DL /DM5 DL 2. Calibration block standard Couplan 3. Wire brush 4. Steel ruler 5. Steel marker 6. Loop inspection (Magnifier) 7. Dust cloth 8. PPE
5.0 UT Examination procedure of the Pipe
1. Positive identification of the pipe to be inspect must be confirmed, such as but not limited to Tag No., equipment No/process line, service, size, connection, pressure setting. 2. Preparing Risk Assessment before start working. 3. Ladder, scaffolding or climbing devices should be OSHA Approved if any 4. Cleaning all surface the pipe will be inspection. All inspection surface areas shall be cleaned to insure removal of dirt, grease, thread lubricants, scale, or other contaminates 5. Calibrating UT (DM4DL) equipment with use calibration standard block 6. Beraggling couplan on the pipe surface 7. Patching the UT probe on the pipe surface and slow move then check display or screen on UT equipment 8. All relevan indication (found) of the moment inspection must be analysis and record 9. Clean up all tools and equipment and working area after finish the job. 10. Preparing UT inspection Report and signed UT level II, Customer
