Jet Research Center Drill Collar Severing Tool P/N 101293224 Rev. K
Page 11 of 20
Jet Research Center, 8432 South I-35W, Alvarado, Texas, 76009-9775, USA
Telephone 1-817-761-2000; Toll Free 1-800-451-5403; Fax 1-817-783-5812; Website www.jetresearch.com
4.3 DCST Assembly
Note: Refer to Drawings D00051806 (Fig.3), D00747816 (Fig.4) and Table 4 in Section 7.
4.3.1 Open boxes containing the Explosive Pellets (item 15.1) and two Cartridge
Assemblies (15.2). Carefully un-wrap them and ensure that they are all in good
condition and that you have the proper number of pellets to assemble the tool, see
Table 4 in appendix 1. Divide the pellets into two equal groups; set both groups of
pellets aside.
4.3.2 Remove MDF Assembly (14) from container. Remove protective tube from booster
end. Carefully straighten the MDF cord.
4.3.3 Place half the pellets over the steel tube of the MDF allowing them to bottom out
against the base of the MDF.
4.3.4 Place cartridges over the MDF tube with the small diameters facing each other (see
Detail C on drawing D00051806)
4.3.5 Place the remaining pellets on the MDF tube. Make sure there are an equal number
of pellets on each side of the cartridges.
4.3.6 Slide MDF Assembly tube through the center hole of the end clamp. Hand-tighten
the Set Screw (7) to secure the end clamp to the tube. At this time the explosive
column should be tightly held (with no play or movement) between the base of the
MDF and the end clamp. (Detail B, Drawing D00051806)
4.3.7 Carefully bend the cord of the MDF to an approximate 3/8” inch diameter arc and
insert the booster into the offset hole of the end clamp. Gently tighten the Set Screw
(8) to hold the booster in place against the end clamp. Do not over tighten the set
screw that holds the booster. Only a slight resistance needs to be felt to ensure
that the booster remains in place. (Detail B, Drawing D00051806)
4.3.8 Remove the Carrier Tube Assembly (1) from its carton.
4.3.9 Place the Spacer Spring (9) in the bottom of the carrier tube.
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