Cable Abandonment Using 3M Cold Shrink CSCAK Kits - Installation Guide + Video Demo

By Chris Dodds on 26th February, 2014

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3M Cold Shrink Cable Abandonment Kits are suitable for XLPE and EPR insulated cables with lead sheath and steel wire armour or wire braid (galvanised steel, phosphur bronze or stainless steel) - this includes single and multi-core power cables, 600/1000 volts up to 3.3kV.

3M Cold Shrink Cable Abandonment Kits CSCAK1 - CSCAK5 accomodate cables 12 - 81mm outside diameter.

Cable abandonment kits are generally employed to abandon cables in the offshore, marine, petrochem, nuclear and power industries on decommissioning projects. Decommissioning projects in the oil and gas sector include a requirement to safely abandon offshore power, control and instrumentation cables - 3M CSCAK kits effectively "ground" the abandoned (redundant) cable circuit thereby avoiding potential electrocution shock to engineers caused by inadvertent energisation.

3M CSCAK kits are specified for routine offshore cable maintenance and final platform cable decommissioning where topside, subsea and drill site cables must be abandoned. 

3M Cold Shrink Abandonment Kits require no heat source to install - "cold-applied" - and are therefore suitable for use in Zone 1 and Zone 2 hazardous areas with potential explosive atmospheres. No "hot-working" permits, no naked flames.

Fig 1 : Prepare the cable as indicated below exposing the primary insulation, lead sheath, bedding, armour and cable oversheath - abraid the cable sheath and clean using suitable cable cleaning wipes for 50mm.

 

Fig 2 : Apply 3M 2228 Mastic Tape to seal the cable crutch over lead sheath and between the cable cores - 3M 2228 tape should overlap 5mm on to cable bedding or lead sheath (if applicable)

Fig 3 : Wrap 2 half lapped layers of 3M Scotch 24 Tinned Copper Mesh Tape over the cable to be abandoned starting at the conductors up on to the cable armour - use binder wire over the conductors and lead sheath (where applicable) to ensure contact. Fit 3M Constant Force Spring over the Scotch 24 Tape and cable armour - if an earth is required this should be fixed between the Scotch 24 Tape and cable armour. Over tape the 3M Constant Force Spring with 2 layers of highly stretched 3M Scotch 23 Self Amalgamating Tape applied in the same direction as the spring. Continue up over the cable oversheath for 10mm.

 

Fig 4 : Where an earth braid is being used apply 1 layer of mastic strip around the cable sheath at given dimension, push braid into mastic and apply a second layer over the braid.

 

Fig 5 : Position the 3M Cold Shrink End Cap over the end of the cable as shown - shrink onto the cable by unwinding the core.

Fig 6 : Position the 3M Cold Shrink PST (Pre-Stretched Tube) over the cable to be abandoned - commencing 15mm on end of end cap shrink down the 3M Cold Shrink PST by unwidning core in an anti-clockiwse direction.

Video : 3M Cold Shrink Cable Abandonment Kits CSCAK (Demo)

• Further reading

3M Cold Shrink Cable Abandonment Kit

3M Cold Shrink Cable Abandonment Kits Installed At Gas Processing Plant

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3M Cold Shrink Cable Abandonment Kits CSCAK - Power Cable - Instruction

Category:  LV Cable Jointing & Terminating

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