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Title: Tube cutter tool and method of use for coupon removal

A tube cutter tool is insertable into a tube for cutting a coupon from a damaged site on the exterior of the tube. Prior to using the tool, the damaged site is first located from the interior of the tube using a multi-coil pancake eddy current test probe. The damaged site is then marked. A fiber optic probe is used to monitor the subsequent cutting procedure which is performed using a hole saw mounted on the tube cutter tool. Prior to completion of the cutting procedure, a drill in the center of the hole saw is drilled into the coupon to hold it in place.
 [1];  [1];  [2]
  1. (Ballston Lake, NY)
  2. (Scotia, NY)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) KAPL
Patent Number(s):
US 5626445
Contract Number:
Research Org:
Knolls Atomic Power Laboratory (KAPL), Niskayuna, NY
Country of Publication:
United States
tube; cutter; tool; method; coupon; removal; insertable; cutting; damaged; site; exterior; prior; located; interior; multi-coil; pancake; eddy; current; probe; marked; fiber; optic; monitor; subsequent; procedure; performed; mounted; completion; drill; center; drilled; hold; eddy current; fiber optic; optic probe; tube cutter; damaged site; cutter tool; /408/29/