Jet Research Center  Drill Collar Severing Tool  P/N 101293224 Rev. K      
 
    Page 9 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  Assembly of the Drill Collar Severing Tool 
 
4.1  Safety Procedures 
 
JRC  Drill  Collar  Severing  Tools  are  shipped  disassembled  to  allow  for  preferable 
transportation  methods.  Upon  delivery  to  the  end  user  destination,  the  DCST  can  be 
assembled in preparation for deployment into the well. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Ensure all required materials are identified and on hand before proceeding with handling of 
the  explosive  components.  Quantity  and  shape  of  explosive  components  in  the  kit  is 
dependent on DCST size. 
 
The DCST may use a Resistorized detonator, which reduces the possibility of accidental 
firing  by  stray  current,  or  a  Top  Fire,  RED  detonator;  that  provides  additional  safety 
enhancements  when  compared  to  conventional  Resistorized  detonators.  All  previously 
established  safety  rules  and  regulations  should  be  maintained  during  the  assembly  of 
explosives. 
 
 
4.2  Required Materials 
 
WARNING 
Refer  to  and  apply  the  procedures  listed  in  the 
“Recommended  Practices  for  Oilfield  Explosives  Safety; 
API Recommended Practice 67 (RP67)” before assembling 
or using this product. 
 
BE SURE YOU HAVE READ AND THOROUGHLY UNDERSTAND ALL 
SAFETY AND ASSEMBLY PROCEDURES BEFORE BEGINNING ANY 
ASSEMBLY.  BEFORE  PROCEEDING  WITH  EXPLOSIVES 
ASSEMBLY,  ENSURE  THAT  THE  WORKING  AREA  IS  CLEAN  AND 
SUITABLE  FOR  WORKING  WITH  EXPLOSIVES  AND  THAT  ANY 
SOURCES OF IGNITION ARE REMOVED.