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 1 of 8 E
SPECIFICATION FORM Form #BJT079 Revision 1
SPECIFICATION
NAME DATE
Originator Jack Barrington April 11, 1989
Checked Ed Rios April 11, 1989
Design Jack Barrington April 11, 1989
Approved Jerry DeLaat April 11, 1989
Rev ECN # Date Rev ECN # Date
A3381 8/16/94 DSEE ECN 7/15/03
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 2 of 8 E
SPECIFICATION FORM Form #BJT079 Revision 1
B5133 3/28/01 ESEE ECN 10/17/03
CSEE ECN 10/8/2002
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 3 of 8 E
SPECIFICATION FORM Form #BJT079 Revision 0
1.0 SCOPE
1.1 This specification covers the minimum recommended practice for the field inspection, pressure
testing, thread gauging, and identification of STANDARD SERVICE straight joints with non-
pressure seal (NPS) union ends, FMC or SPM integral union end straight joints, and FMC or SPM
fabricated straight joints.
2.0 GENERAL
2.1 Straight joints shall be inspected, gauged, and tested in strict accordance with the procedures
outlined within this specification at intervals not to exceed twelve (12) months.
2.2 Straight joints not permanently attached to truck, trailer, or skid-mounted unit shall have non-
pressure seal union ends. Straight joints used as ground line having line pipe threaded union ends
shall be immediately removed from service and destroyed.
2.3 Each district shall be responsible for the performance of required inspections and tests.
2.4 Region personnel will assign each straight joint a unique serial number in accordance with
Specification No. 40438.
2.5 Acceptable and unacceptable limits
2.5.1 Straight joints conforming to the requirements of this specification shall be identified in
accordance with Section 5.2.4 and returned to service.
2.5.2 Straight joints not conforming to the requirements of this specification shall be immediately
removed from service. Unacceptable straight joints shall be identified in accordance with
Section 2.5.3.
2.5.3 Unacceptable components shall be identified by either applying an "X" or other unique
symbol with aerosol spray paint of a color contrasting to the equipment paint color, or
attachment of a device clearly identifying the item as unacceptable. See Inspection Standard
No. 40421 Paragraph 8.0 for additional Identification Requirements.
3.0 INSPECTION
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.
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 5 of 8 E
SPECIFICATION FORM Form #BJT079 Revision 0
3.2.5 Wing Nuts
The wing nut shall be removed, thoroughly cleaned and visually examined to ensure the
threads are free of any injurious defects. Sharp edges or burrs on the body of the wing nut
shall be removed with a fine flat file to parent metal only. Rolled over edges or metal
fragments on hammer lugs shall be ground smooth. Care must be taken not to grind on the
body of the nut. If the nut is found to be gouged or grooved from grinding, it shall be
removed from service and discarded. Wing nut hammer lugs having 1/8” or less across the
flat at the top of the hammer lug shall also be removed from service and discarded. The
retainer segments and retainer ring shall be visually examined to ensure they are free of any
injurious defects. The wing nut will be inspected using the appropriate gauge kit according
to the gauge kit manufacturer’s instructions.
3.2.6 Union Gauge Kits
P/N 861827 - 1-1/2” 1502
P/N 76111 - 2” 1502
P/N 854064 - 3” 1502
P/N 861828 - 4” 602
P/N 861829 - 4” 1002
4.0 RESERVED
5.0 PRESSURE TEST
5.1 Each straight joint shall be hydrostatic pressure tested to its maximum rated working pressure (see
pressure chart) at intervals not to exceed twelve (12) months. Straight joints will be pressure tested
individually. Hydrostatic pressure tests shall be performed in accordance with the following
procedure:
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