ML19344E128
| ML19344E128 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 05/06/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Pilant J NEBRASKA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 8008260690 | |
| Download: ML19344E128 (1) | |
Text
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bcc to DAC:ADM:
CENTRAL FILES UNITED STATES POR:HQ
[A8 "' Ac*'o, NUCLEAR REGULATORY COMMISSION LPOR 33 REGloN IV
--Ti I E I ) 5' I 3
611 RYAN PLAZA oRIVE SUITE 1000 NSIC I
AALINGToN. TEXAS 76012 3 ~ :.
e STATE 7
May 6, 1980 Docket No. 50-298 Nebraska Public Power District ATTN:
J. M. P11 ant, Director Licensing & Qualitf Assurance P. O. Box 499 Columbus, Nebraska 68601 Gentlemen:
Enclosed is IE Bulletin No. 80-10 which requires action by you with regard to your power reactor facility with an operating license.
For facilities with a construction permit, no action is required; the Bulletin is providing information only.
Should you have questions regarding this Bulletin or the actions required of you, please contact this office.
Sincerely,
/,
<f
/ N..' / /,.;.[I.;j
( w Karl V. Seyfrit
)
Director
Enclosures:
1.
List of Recently Issued IE Bulletins cc:
L. C. Lessor, Superintendent Cooper Nuclear Station Post Office Sox 98 3rownv111e, Nebraska 68321 8008260 gg
I r
I t
SSINS No.: 6820
[
UNITED STATES Accessions No.:
NUCLEAR REGULATORY COMMISSION 8002280677 i
0FFICE OF INSPECTION AND ENFORCEMENT L
WASHINGTON, D.C.
20555 l
Date: May 6, 1980 i.
Page 1 of 2 4
CONTAMINATION OF NONRADI0 ACTIVE SYSTEM AND RESULTING POTENTIAL FOR UNMONITORED, l
]
UNCONTROLLED RELEASE OF RADIOACTIVITY TO ENVIRONMENT l
Description of Circumstance l
l At the Brunswick Nuclear Facility, the auxiliary boiler was operated for an extended period of time with radioactively contaminated water in the boiler
)
2 at levels up to 2 x 10 microcuries per milliliter. A tube leak in the i
firebox of the oil fired auxiliary boiler resulted in an unmonitored, uncon-trolled release of radioactivity to the environment.
i 1
initial contaminating event was. caused by the use of a temporary heating 1 2 aose from the auxiliary boiler to a radioactive waste evaporator corcentrate tank.
Upon cooling and condensation of the steam in the temporary hose, contam-
'inated water siphoned from the concentrate tank back to the auxiliary boiler.
Due to additional, continuing leaks in the heat exchanger of the waste evaporator (to which the auxiliary boiler also provides process steam), the licensee's efforts to decontaminate the auxiliary boiler feedwater had been ineffective.
Maintenance of proper boiler chemistry was difficult because blowdown options 2
were severely restricted due to the contamination.
As a result, a boiler tube
. failure caused on the order of 100 millicuries of radioactive material to be released off-site via the auxiliary boiler fire. box and smokestack in the form of steam. This resulted in increased environmental levels of cesium and activa-tion products being detected as far as eight miles downwind from the site boundary.
Action to be Taken by Licensee with an Operating License 1.
Review your facility design api operation to identify systems that are considered as nonradioactive or described as nonradioactive in the FSAR), but could possibly become radioactive through interfaces with radioactive systems, i.e.,-a nonradioactive system that could become contaminated' due to leakage, valving errors or other operating conditions in radioactive systems.
In particular, special consideration should be given.to the following systems:
auxiliary boiler system, demineralized i
water system,. isolation condenser system, PWR secondary water clean-up system, instrument air system, and the sanitary waste system.
2.
Establish'a routine sampling / analysis or monitoring program for these systems in order to promptly identify any contaminating events which could lead to unmonitored, uncontrolled liquid or gaseous releases to i
the environment, including releases to on-site leaching fields or retention ponds.
i<
_ _.. _ ~.,
IE Bulletin No. 80-10 May 6, 1980 RECENTLY ISSUED IE BULLETINS Bulletin Subject Date Issued Issued To No.
80-05 Vacuum Condition Resulting 3/10/80 All PWR power reactor In Damage To Chemical facilities holding Volume Control System Operating Licenses (0Ls)
(CVCS) Holdup Tanks and to those with a Construction Permit (CP) 80-06 Engineered Safety Feature 3/13/80 All power reactor facilities (ESF) Reset Controls with an Operating License (OL)79-03A Longitudinal Weld Defects 4/4/80 All power reactor facilities In ASME SA-312 Type 304 with an Operating License Stainless ceel Pipe (OL) or Construction Permit (CP) 80-07 BWR Jet Pump Assembly 4/4/80 All GE BWR-3 and BWR-4 Failure facilities with an Operating License (OL) 80-08 Examination of Containment 4/7/80 All power reactors with a Liner Penetration Welds Construction Permit and/or Operating License (0L) 80-09 Hydramotor Actuator 4/17/80 All power reactor Deficiencies operating facilities and holders of power reactor construction permits Enclosure
.