Construction and properties
The Full Tension Splice consists of an aluminum main pipe coated with explosives. For feral lines, a steel pipe over a steel core is also used, which in most cases is coated with a filler pipe with a diameter equal to the line diameter. Steel liners are joined with a single steel pipe coated with explosive.
The Full Tension Splices are used for splicing electrical transmission lines.
The implosive connector can also be used for:
- Anchoring of steel cables.
- Bardun fasteners for antenna and high-voltage masts.
Full Tension Splice
Full Tension Splice with explosives
Full Tension Splice Assembly Film
See how a Full Tension Splice is assembled and detonated in the field.
VP Assembly Full Tension Joints
Specifications
Explosives
Pentritt (PPentritt (PETN) ETN)
Special characteristics
The splice is designed to be pulled through the run-out blocks. Special withdrawal nomograms based on empirical values and theoretical tests showing limit values during withdrawal are available for standard liners.
Technical
Feral lines
Line diameter: 12,33-56,7
Length: 460-1500
Steel lines
Line diameter: 7,32-25,7
Length: 300-800
Aluminium lines
Line diameter: 12,7-43
Length: 300-700
Rules of use and safety
- Detonating fuse must be cut with a sharp knife or special tool suitable for this purpose.
- Detonating fuse must be initiated with a catch cap or teeth.
- Moist pentrite has low sensitivity; interruptions in detonation may occur.
- Dry pentrite has great sensitivity.
- If spills or remnants of detonating fuse are discovered after detonation, this must be collected and treated as an explosive item.
- Safety distance min. 50m upon detonation.
Detonation
- Place the line ends with attached line joint in the shooting stand approx. 1m above the ground. A simple wooden stand can be used for this purpose.
- Make sure the connector is correctly mounted. Inaccuracy can cause reduced grip length and thus reduced holding power.
- Tape the catch cap to the explosive. Make sure that the trap cap is placed in the correct place as shown in the SPECIAL INSTRUCTIONS OF THE USER'S MANUAL, part 3, DETONATION, point 2, and that the trap cap lies in the longitudinal direction of the pipe close to the explosive.
- Carry out turnover of the charge.
- Remove any remnants of the PVC hose and the joint is finished.
Detonation instruction
Approval and classification
Notified Body (Approving institute)
CE 0812
(PVTT, Finland)
In general, reference is made to national laws and regulations. Regulations for the handling of explosive substances. Chapter 11. Collection, reception and destruction.
