SECTION V
Prepared By GTF 08/02/02
Approved
ANCILLARY Engineer RJH 02/13/96
SPECIFICATION Approved
Mgr Engr DR 02/13/96
(GENERIC) Approved
GGM QA GTF 08/02/02
REVISION 004 08/02/02
SUBJECT: FULL LENGTH DRIFT/END DRIFT INSPECTION PROCEDURE
1.0 SCOPE
1.1 This document sets forth the procedure for the drifting of Hunting's proprietary connections.
2.0 REFERENCES
2.1 The latest edition of the following documents shall form part of this specification:
2.1.1 API Spec 5CT
2.1.2 API RP5A5
3.0 EQUIPMENT
3.1 The following equipment is required to perform drift inspection:
3.1.1 Appropriate drift for product being inspected.
1. Drift Length Tolerance: -0.000"/+0.125"
2. Drift Diameter Tolerance: -0.000 to +0.005"
NOTE: The drift length tolerance is for that length of the drift that is within the given drift
diameter tolerance. The taper or bevel shall not be part of the specified drift length.
4.0 VERIFICATION
4.1 Using a properly calibrated vernier dial caliper or micrometer, measure the drift diameter to the
nearest 0.001 of an inch on each end and in the middle of the drift. Measure with sufficient
number of readings to determine the largest and the smallest diameters. Record the measurements.
4.2 Using a steel scale, measure the overall length of the mandrel excluding rounded or tapered
leading edges.
4.3 Measuring devices shall be the same temperature as the drift mandrel. (The same temperature
means within 5oF of each other after being stabilized for 30 minutes.)
4.4 If a drift mandrel is found to be out of tolerance, all tubes drift tested between that time and the
previous acceptable verification shall be redrifted.
NOTE: Any drift mandrel found to be out of tolerance shall not be used.
5.0 VERIFICATION FREQUENCY
5.1 The drift mandrel’s specified length and diameters shall be verified at the following frequency:
5.1.1 Prior to the start of an order.
5.1.2 At the start of each shift.
5.1.3 At shift change.
5.1.4 After the final shift of the day.
5.1.5 At the completion of the order.
G:\degeorge\my files\word\ancillary-generic\drift-004 Page 1 of 2
SECTION V
Prepared By GTF 08/02/02
Approved
ANCILLARY Engineer RJH 02/13/96
SPECIFICATION Approved
Mgr Engr DR 02/13/96
(GENERIC) Approved
GGM QA GTF 08/02/02
REVISION 004 08/02/02
SUBJECT: FULL LENGTH DRIFT/END DRIFT INSPECTION PROCEDURE
6.0 INSPECTION FREQUENCY
6.1 An end drift shall be performed following each coupling buck-on at a 100% frequency.
6.2 A full length drift shall be performed if required by the purchase order at a 100% frequency.
7.0 INSPECTION PROCEDURE
7.1 Assure the drift mandrel is at the same temperature as the pipe being inspected.
7.2 Remove thread protectors and visually inspect to assure the pipe to be inspected is clean and free
from debris on the tube I.D.
7.3 Using appropriate caution to prevent damage to any threaded or machined surface, carefully insert
the appropriate drift mandrel inside the tube I.D. from the coupled end.
7.4 Insert the drift mandrel to a depth in the tube equal to the back-up tong marks on the tube OD
surface for end drifting or equal to the entire length for full length drift. Use a force equal to or
less than the weight of the mandrel.
7.5 Use appropriate caution to prevent damage to the threaded area when removing the drift mandrel
from the tube I.D.
8.0 ACCEPTANCE/REJECTION
8.1 If the drift mandrel passes freely through the required drift length, the tube has passed the drift test
and is acceptable.
8.2 Any tube in which the mandrel does not pass freely through the required drift length or stops due
to an obstruction shall be rejected.
9.0 REWORK
9.1 All tubes which fail the drift test shall be visually inspected on both O.D. and I.D. to assure the
tube straightness and cleanliness on the I.D. surface.
9.2 Following a cleaning of the tube I.D. surface, redrift the tube in accordance with 7.3 - 7.5.
9.3 Acceptance/rejection shall be as specified above in Section 8.0, Paragraph 8.1 of this document.
10.0 IDENTIFICATION
10.1 All tubes that pass the drift test shall be stenciled “END DRIFT” or "FULL LENGTH DRIFT"
adjacent to the coupling as applicable.
10.2 All tubes that fail the drift test shall have a red paint band painted adjacent to the coupling and a
red paint band in the area that the drift stopped with the word “no drift” stenciled clearly adjacent
to the red band.
G:\degeorge\my files\word\ancillary-generic\drift-004 Page 2 of 2
