ML19250B774
| ML19250B774 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 10/19/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | William Jones OMAHA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 7911050218 | |
| Download: ML19250B774 (1) | |
Text
PDR:HQ UNITED STATES
- pa nrouq'o, NUCLEAR REGULATORY COMMISSION REGION IV fj${C
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October 19, 1979 Docket No.
50-285 Omaha Public Power District
' ATTN:
W. C. Jones, Division Manager -
Production Operations 1623 Harney Street Omaha, Nebraska 68102 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, I
1 Ka 1 V Sey it Director
Enclosures:
1.
IE Circulars Issued in the Last Six Months cc:
S. C. Stevens, Manager Fort Calhoun Station Post Office Box 98 Fort Calhoun, Nebraska 68102 7911050 12/1 128
Accession No.: 7908220128 SSINS:
6830 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Circular No. 79-21 Date-October 19, 1979 Page 1 of 2 PREVENTION OF UNPLANNED RELEASES OF RADIOACTIVITY Numerous incidents of unplanned teleases of radioactivity have been reported to the NFC 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 nuinber -f 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 transier of radioactive liquids. Errors in wricten precedures 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 located away from areas with a high potential for spills.
c.
Consideration should be given to drip pans under equipment, such as pumps aad valves, from which leakage is expected.
d.
Cofferdams should be installed under doors to areas with a potential for radioactive spills.
Preoperational testing should v -
e.
that would permit radioactivity unit (s) under consttuction.
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