ML19260A240
| ML19260A240 | |
| Person / Time | |
|---|---|
| Site: | Catawba, Perkins, Cherokee  |
| Issue date: | 10/19/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Dail L DUKE POWER CO. |
| References | |
| NUDOCS 7911080291 | |
| Download: ML19260A240 (1) | |
Text
[M ga arcg#'o UNITED STATES M'N
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101 MARIETTA ST., N.W., SUITE 3100 o
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AT LANTA, GEORGI A 30303 g,
OCT 191979 In Reply Refer To:
RII:JP0 50-413, 50-414 50-488, 50-489 50-490, 50-491 50-492, 50-493 Duke Power Company Attn:
L. C. Dail, Vice President Design Engineering P. O. Box 33189 Charlotte, North Carclina 28242 Gentlemen:
Enclosed is IE Circular No. 79-21, "I revention of Unplanned Releases of Radioactivity," which provides information in inadvertent releases /on-site spills of radioactivity.
Should you have any questions related to the enclosed suggested preventive measures, please contact this office.
Sincerely, James P. O'Reilly Director
Enclosures:
1.
IE Circulars Issued in the Last Six Menths 1296 179 v ou oso p3 /
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007 1 9 1979 Duke Power Company cc w/ enc 1:
D. G. Beam, Project Manager Post Office Box 223 Clover, South Carolina 29710 J. T. Moore, Project Manager Post Office Box 422 Gaffney, South Carolina 29340 1296 180
Accession I;o.:
7908220128 SSINS:
6830 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 October 19, 1979 IE Circular No. 79-21 PFEVENTION OF UNPLANNED RELEASES OF RADI0 ACTIVITY Numerous incidents of unplanned releases of radioactivity have been reported to the NRC within the past few months. These incidents of leaks, overflows and spills have resulted in contamination of areas outside of plant buildings.
The attached table provides you with summary information on these events, theit apparent causes, the radiological consequences and the corrective actions.
We believe that a number of these incidents could have been avoided and preven-tive actions for these types of unplanned releases should be inatituted by all reactor licensees.
Based on the reported incidents, the following preventive measures can minimize the occurrence of such events.
1.
Review of procedures for transfer of radioactive liquids.
Errors in written procedures have led to mistakes in valve line-ups and tank overflows. Written procedures, including check lists for valve line-ups, should be developed and followed for operations which could cause spillr, of radioactivity. Management controls, including audits, should be employed to assure verbatim compliance with such procedures.
2.
Review of "as built" systems having the potential of inadvertent releases because of design or construction errors. Consider items such as:
Tank overflows should be rouced to liquid radwaste tanks.
a.
b.
Storm drains should be located away from areas with a high potential for spills, Consideration should be given to drip pans under equipment, such c.
as pumps and valves, from which leakage is expected.
d.
Cofferdams should be installed under doors to areas with a potential for radioactive spills.
e.
Preoperational testin;; should v that would permit radioactivity unit (s) under construction.
DUPLICATE DOCUMENT 3.
Periodically functionally test and p of systems that could cause an inadv Entire document previously corrosion degradation have occurred entered into system under:
to cause leaks. New permanent and t p9)
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