ML19250C127
| ML19250C127 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 10/19/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Daltroff S PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| References | |
| NUDOCS 7911080263 | |
| Download: ML19250C127 (1) | |
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o UNITED STATES 8'y>f,f NUCLEAR REGULATORY COMMISSION c
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,d' KING OF PRUSSIA, PENNSYLVANIA 19406 Docket Nos. 50-277 0CT 1 91m 50-278 Philadelphia Electric Company ATTN: Mr. S. L. Daltroff Vice President Electric Production 2301 Market Street Philadelphia, Pennsylvania 19101 Gentlemen:
Enclosed is IE Circular No. 79-21, " Prevention of Unplanned Releases of Radioactivity," which provides information on inadvertent releases /on-site spills of radioactivity.
Should you have any questions related to the enclosed suggested preventive measures, please contact this office.
Sincerely,
, m, QtL~-
B ce H. Grier y
l rector i
Enclosures:
1.
IE Circular No. 79-21 2.
List of IE Circulars Issued in the Last Six Months cc w/encls:
W. T. Ullrich, Station Superintendent Troy B. Conner, Jr., Esquire Eugene J. Bradley, Esquire Raymond L. Hovis, Esquire Michael J. Scibinico, II, Assistant Attorney General 1274 215 7011 080 t
ENCLOSURE 1 Accession No.:
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 PREVENTION OF UNF' NNED RELEASES OF RADI0 ACTIVITY J
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, their 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 instituted 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 spills of radioactivity.
Management controls, including audits, should be employed to assure verbatim compliance with such procedures.
2.
Rcview of "as built" systems having the potential of inadvertent releases because of design or construction errors.
Consider items such at:
a.
Tank overflows should be routed to liquid radwaste tanks.
b.
Storm drains should be located away from areas with a hig's pote.ntial for spills.
c.
Consideration should be given to drip pans under equipmtnt, such as p ;mps and valves, from which leakage is expected.
d.
Cofferdams should be installed under doors to areas with a potential for radioactive spills, e.
Preoperational testing :
that would permit radios unit (s) under constructi DUPLICATE DOCUMENT 3.
Periodically functionally tes Entire document previously of systems that could cause a entered to system under:
corrosion degradation have oc ANO
[f)l to cause leaks.
New permanen
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1274 216
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