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
