RESEARCH AND TECHNOLOGY CENTER
11211 FM 2920 Tomball, TX 77375
NUMBER
40204
Title: Page Revision
Inspection and Testing Procedures for Straight Joints Used in Standard
Service 4 of 8 E
SPECIFICATION FORM Form #BJT079 Revision 0
3.1 Prior to a hydrostatic test, all external and internal surfaces, where possible, shall be visually
inspected to ensure such surfaces are free of excessive erosion, corrosion, or surface imperfections.
3.2 Additional inspection points are as follows:
3.2.1 Terminal End Wear (NPS only)
Each straight joint NPS terminal end (male and female) shall be inspected using the
appropriate tubing I.D. inspection gage in accordance with the inspection method shown on
Drawing C-33449. Straight joints having unacceptable terminal ends shall be immediately
removed from service with NO other field inspection required. Continuation of inspection
(visual, hydrostatic test, etc.) shall be performed only on straight joints whose terminal ends
are found to be acceptable within the limits of the gauging practice in the aforementioned
inspection.
3.2.2 Female Union Subs
ACME threads shall be thoroughly cleaned and visually examined to ensure threads are free
of any injurious defects (cracks, chips, etc.). Any sharp edges or burrs shall be removed
with a fine flat file to parent metal. The female union sub seal ring seat shall be visually
examined to ensure it is free of erosion, corrosion, or other injurious defect. The union sub
will be inspected using the appropriate gauge kit according to the gauge kit manufacturer’s
instructions.
3.2.3 Union Sub Seal Ring
The union sub seal ring shall be removed and visually examined to ensure it is of the proper
type and free of cuts, blemishes, or other injurious defect. If any defect is found, the seal
ring shall be replaced.
3.2.4 Male Union Subs
The union sub seal face shall be thoroughly cleaned and visually examined to ensure it is free
of erosion, corrosion, or other injurious defect. Sharp edges or burrs shall be removed with
a fine flat file to parent metal. The union sub will be inspected using the appropriate gauge
kit according to the gauge kit manufacturer’s instructions.