ML19309F747
| ML19309F747 | |
| Person / Time | |
|---|---|
| Issue date: | 04/01/1980 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 8004300573 | |
| Download: ML19309F747 (6) | |
Text
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631 PARK AVENUE g$,***i* *,o'g KING OF PRUSSIA, PENNSYLVANIA 19408 April 1, 1980 THOSE LISTED BELOW:
EMERGENCY DIESEL-GENERATOR LUBRICATING OI! ADDITION AND ONSITE SUPPLY The enclosed Inspection and Enforcement Circular (Enclosure 1) was forwarded to the reactor operating license and construction permit holders listed in for information as indicated in Enclasure 3.
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Boyce H. Grier irector
Enclosures:
1.
IE Circular No. 80-05 2.
List of Lic'ensees and Construction Permit Holders Receiving IE Circular No. 80-05 3.
Sample Letter CONTACT:
D. L. Caphton (8-488-1254)
DISTRIBUTION:
w/ ADDRESSEES LIST Division of Technical Support, MPS (ATTN:
R. A. Harti sid)
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ENCLOSURE 1 SSINS No.: 6630 Accession No.:
UNITED STATES 7912190691 NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AN9 UFORCL M T WASHINGTON, D.C.
70555 IE Circular No. 80-Os Date:
April 1, 1980 Page 1 of 3 l
EMERGENCY DIESEL-GENERATOR LUBRICATING OIL ADDITION AND ONSITE SUPPLY Description of Circumstances:
On January 17, 1980, the Kewaunee Nuclear Power Plant experienced a partial loss of offsite power which resulted in a turbine trip, reactor trip, and one emergency diesel engine driven generator (diesel generator or D/G) supplying power to one engineered safeguards bus.
Offsite power continued to supply the other engineered safeguards bus.
During the day before, on 1-16-80, this diesel generator had successfully completed a 24-hour loaded test run but had a low lube oil alarm condition with oil level 1/2-inch low. The D/G was fully operational in this condition.
Before oil could be added on 1/17/80, the D/G was required for emergency power following the failure of the reserve auxiliary transformer.
The normal oil fill location could not be used while the D/G was operating.
The D/G Technical Manual (TM) indicated that oil could be added with the engine running, but did not describe the method to be used.
Lube oil was added by pumping into the engine through a pipe that was assumed to be a lube oil line; this line was color coded in the TM and painted with the lube oil system color code.
Three barrels of oil were added via this line while the D/G was operating.
After transferring the emergency bus to off-site power through the tertiary auxiliary transformer the D/G was shut down.
With the D/G shut down two more barrels of oil were added through this line without increasing the sump level.
Then two more barrels of oil were added through a different addition point and the level was restored to normal.
The following day a factory representative determined that the first five barrels of oil had been added to the engine air box through a mismarked (should have been color coded as an air line) drain connection.
Four and a half barrels of oil were drained out after which the diesel generator was satis-factorily test operated.
It is believed that the diesel engine could have been damaged had an engine start been attempted while the five barrels of oil were in the air box.
Further, it is noted that procedures for adding oil to the operatin the personnel perform-
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ing the how to add oil to a running ly added.
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