Part 21 Report - 1996-011

ACCESSION #: 9602230108 SENTINEL Amersham Corporation 40 North Avenue Burlington, MA 01803 tel (617) 272-2000 tel (800) 225-1383 7 Feb 1996 fax (617) 273-2216 Document Control Desk Amersham U.S. Nuclear Regulatory Commission QSA Washington, DC 20555 Dear Sir or Madam: Amersham is closing out the potential Part 21 defect reported to you in an interim report on 8 Sep 95. The interim report concerned a model 899 drive cable connector that pulled off the drive cable. We have performed extensive testing to try and recreate the incident. The results of the tests indicate that the drive cable connector performs as designed and withstands the tensile test requirement of ANSI N432 after successfully completing the endurance test described in ANSI N432. The endurance test was conducted using a setup that simulated use in the Century type equipment as described in our letter dated 8 Sep 95. This setup was hypothesized to be a worst case condition due to the hard impact the connector receives when returned to the stored position. We have been unable to recreate a scenario under normal operating conditions that would cause the connector to pull off. In addition a review of similar occurrences has shown that there was some type of impact to cause the connector to pull off. As there is no indication of a defect in manufacturing, and the drive cable connector performed as required as evidenced by the testing , we conclude that there is no substantial safety hazard as a result of a defect and therefore no Part 21 impact. Please contact me if you require any additional information. Sincerely, Cathleen Roughan Regulatory Affairs Manager cc: Mr. John Kinneman U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406 Mr. Steve Baggett Sealed Source Safety Section Source Containment and Devices Branch Division of Industrial and Medical Safety, NMSS U.S. Nuclear Regulatory Commission 1 White Flint North 11555 Rockville Pike Rockville, Maryland 20852 *** END OF DOCUMENT ***

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