ML19260A246
| ML19260A246 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 10/19/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Stampley N MISSISSIPPI POWER & LIGHT CO. |
| References | |
| NUDOCS 7911080305 | |
| Download: ML19260A246 (1) | |
Text
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UNITED STATES e
NUCLEAR REGULATORY COMMISSION g - #s o
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101 MARIETTA ST., N.W., SulTE 3100 o,%
ATLANTA, GEORGIA 30303 OCT 191979 In Reply Refer To:
RII:JPO 50-416, 50-417 Mississippi Power and Light Company Attn:
N. L. Stampley Vice President of Production P. O. Box 1640 Jackson, Mississippi 39205 Gentlemen:
Enclosed is IE Circular No. 79-21, " Prevention 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, D
e
( 5, James P. O'Reilly Director
Enclosures:
1.
IE Circulars Issued in the Last Six Months 1296 306 3o F k
7911080
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OCT 191979 Mississippi Power and Light Company.
cc w/ encl:
C. K. McCoy Plant Manager Post Office Box 756 Port Gibson, Mississippi 39150 1296 307
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 UNPLANNED RELEASES OF RADIOACTIVITY 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.
Review of "as built" systems having the potential of inadvertent releases because of design or construction errors.
Consider items such as:
a.
Tank overflows should be routed to liquid radwaste tanks.
b.
Storm drains should be lotsted 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 testing should varire that cracerannor+- da aa+
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that would permit radioact:
unit (s) under construction DUPLICATE DOCUMENT 3.
Periodically functionally test.
of systems that could cause aa corrosion degradation have occu:
Entire document previour.ly to cause leaks. New permanent i entered into system under:
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No. of pages:
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