Removing coatings from pipe

Details Removing coatings from pipe Removing coatings from pipe

1975-07-30

1976-12-28

Pendegrass, Verlin R.

Ammunition and explosives

Igniting devices and systems

102 27R, F42D 700

Patent

active

039994830

ABSTRACT:
A method and an article of manufacture useful in the method are provided for removing a fracturable coating, such as concrete, from a conduit, such as an underwater pipeline. According to the method a plurality of spaced explosive detonating cords are placed against the portion of the coating to be removed. Upon detonation of the explosive detonating cords the coating is sufficiently fractured to enable its convenient removal from the conduit by a diver but the conduit is only very slightly damaged, if at all, by the explosion.

REFERENCES:
patent: 2259564 (1941-10-01), Holland
patent: 3374737 (1968-03-01), Pike
patent: 3789759 (1974-02-01), Jones

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