PAL-AT Installation Manual
79
10.10 Requirements for Field Joints with Wind-Down End Seals
This procedure only applies to field joints where two pipes with wind-down end seals are joined together.
It should not be performed until immediately before the insulation and shrink sleeve are applied to
seal the field joint.
1. Drill two 1” diameter holes through the jacket in the wind-down portion of only one of the end
seals. It does not matter which of the two end seals is drilled (see Figure 10-5).
2. The holes should be spaced at least 2” away from the ATP cable to prevent accidental
damage to the cable during drilling.
3. One hole should be located in the top half on the end seal and the other approximately opposite it
in the bottom half.
4. Be careful not to damage the ATP cable or pipe when drilling the holes.
5. Test the ATP wires for continuity and insulation as described above after drilling the holes.
6. Proceed with the normal field joint closing procedure.
Figure 10-5
Wind-Down End Seal Modification
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