ML20148B334

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Forwards Info Provided to Generic Assessment Panel in Response to Request for Analysis of .Determination of Cause of Failure for Source End Stops Impossible Based on Info Currently Available
ML20148B334
Person / Time
Issue date: 05/02/1997
From: Michele Burgess
NRC
To: Camper L, Combs F, Piccone J
NRC
Shared Package
ML20148B295 List:
References
SSD, NUDOCS 9705130051
Download: ML20148B334 (2)


Text

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UNITED STATES p"

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,g NUCLEAR REGULATORY COMMISSION i

t WASHINGTON, D.C. 20665-0001 O

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May 2, 1997 Not: To:

F. Combs L. Camper J. Piccone K. Ramsey i

M. Burgess %[ yf31[h7 From:

l RE:

Generic implications of Amersham source end stop failures i

1 The following information is provided to the Generic assessment Panel in response to your request for analysis of the letter dated January 6,1997, from the Globe X-Ray Services, Inc. to the NRC, regarding Amersham source end stop.

Based on the information currently available, it is not possible to determine the cause of failure j

for the source end stops, or to determine whether the manufacturing and quality control processes ensure that the source end stops meet minimum wall thickness specifications as registered. Since the manufacturer is located in the Commonwealth of Massachusetts, we i

recommend that this issue be transferred to Massachusetts for analysis and resolution, including the failure of this particular end stop, the generic implications of the failures, and the j

issue regarding the wall thicknesses. The attached letter transfers the matter and the background materials to Massachusetts, and requests that Massachusetts forward to the NRC a copy of the analysis and resolution.

This should close out ticket # IMNS5674.

copy to S. Baggett i

9705130051 970502 PDR RC PDR SSD

,ns j~

UNITED STATES NUCLEAR REGULATORY COMMISSION

'f WASHINGTON D.C. 20555-0001 i

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May 2, 1997 Mr. Robert Hallisey Radiation Control Program 305 South Street Jamaica Plain, MA 02130

Dear Mr. Hallisey:

The following information is being provided to you for your action, and is in reference to an incident involving failed Amersham source end stops. Preliminary information regarding this issue was provided to you at the March 6,1997, meeting between NRC and Massachusetts staff. At the time of the meeting, the NRC was waiting for information regarding an NRC 4

i Region IV inspection of the source end stop user, Globe X-Ray Services, Inc.

We have received the copy of the NRC Region IV inspection report. Based on the information 4

i currently available, in the inspection report and in the file, it is not possible to determine the cause of failure for the source end stops, or to determine whether the manufacturing and quality control processes ensure that the source end stops meet minimum wall thickness specifications as registered. As per our telephone discussion on April 1,1997, since the manufacturer is located in the Commonwealth of Massachusetts, we are transferring this matter to you for analysis and resolution of the issues involved, including the failure of this particular end stop, the generic implications of the failures, and the issue regarding the wall thicknesses. Attached l

is the file containing all currently available information regarding this issue. We request that you forward a copy of the analysis and resolution to the NRC upon completion of the investigation.

If you have any questions, please contact me at (301) 415-5868, or Steven Baggett at (301) 415-7273

)

i Sincerely, W44-6.-

Michele L. Burgess, Mechanical Engineer Sealed Source Safety Section Medical, Academic, and Commercial Use Safety Branch Division of Industrial and Medical Nuclear Safety 3

Office of Nuclear Material Safety f

and Safeguards

Enclosures:

As stated