ML20205J707
| ML20205J707 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 03/26/1987 |
| From: | George Thomas PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| REF-PT21-87, REF-PT21-87-058-000 NYN-87039, PT21-87-058-000, PT21-87-58, NUDOCS 8704010393 | |
| Download: ML20205J707 (2) | |
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George S. Thomas UI woe p Nuclear Produenon Put2c Service of New Hampshire N:w Hampshire Yankee Division NYN-87039 March 26, 1987 United States Nuclear Regulatory Commission Washington, DC 20555 Attention: Document Control Desk
References:
(a) Facility Operating License NPF-56, Construction Permit CPPR-136; Docket Nos. 50-443 and 50-444 (b) USNRC Letter, dated March 11, 1987, "RAI Regarding Problem with In-Containment Radiation Detector Signal Coaxial Cable," V. Nerses to R. J. Harrison (c) PSNH Letter (NYN-87035), dated March 18, 1987, " Request For Information Regarding GA Technologies 10CFR21 Report on Rockbestos Cable" Subj ect: Request for Information Regarding CA Technologies 10CFR21 Report on Rockbestos Cable Gentlemen:
In a recent discussion with members of the NRC staff, New Hampshire Yankee was requested to clarify the response provided in Reference (c).
In that response, it was noted that our review of engineering documents, construction documents and field verification revealed that Rockbestos Cable described in the subject 10CFR21 report was not us'ed in conjunction with radiat. ion monitors inside containment.
To further clarify our response, NHY does not utilize the coaxial type Rockbestos Cable between any GA Radiation Monitoring Instrumentation (e.g.,
the RM-80 microprocessor and the RD-23 ion chamber detector) either inside or outside containment. The Seabrook radiation monitoring design utilizes ITT-Surprenant cable, which is fully qualified for both normal and post accident service environments. Furthermore, NHY does not utilize the Rockbestos coaxial cable identified in the GA 10CFR21 report in any safety related radiation monitoring application at Seabrook Station.
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P.O. Box 300. Seabrook, NH 03874. Telephone (603) 474 9574
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e United States Nuclear Regulatory Commission March 26, 1987 Attention: Document Control Desk Page 2 Should you have any further questions regarding this matter, please contact the Bethesda Licensing office (Mr. R. E. Sweeney) at (301) 656-6100.
Very truly yours, George S. Thomas cc:
Mr. Victor Nerses, Acting Director PWR Project Directorate No. 5 Division of PWR Licensing A U. S. Nuclear Regulatory Commission Washington, DC 20555 Regional Administrator U.S. Nuclear Regulatory Commission - Region I 631 Park Avenue King of Prussia, PA 19406 Mr. A. C. Cerne NRC Senior Resident Inspector Seabrook Station Seabrook, NH 03874 Atomic Safety and Licensing Board Service List f
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