PNO-III-88-037, on 880412,approx 1,000 Gallons of Radioactive Water Drained from RHR Sys Piping Into Equipment Room.Spill Occurred When RHR Valves Returned to Normal Positions After Leak Rate Testing.Cleanup of Rooms & Equipment Initiated

PNO-III-88-037:on 880412,approx 1,000 Gallons of Radioactive Water Drained from RHR Sys Piping Into Equipment Room.Spill Occurred When RHR Valves Returned to Normal Positions After Leak Rate Testing.Cleanup of Rooms & Equipment Initiated

ML20151J857
Person / Time
Site:	Clinton
Issue date:	04/13/1988
From:	Greger R, Shafer W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-88-037, PNO-III-88-37, NUDOCS 8804210202
Download: ML20151J857 (1)

I PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-III-88-37 Date April 13, 1988 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The infonnation is as initially received without verification or evaluation, and is basically all that is known by the Region III- j staff on this date.

Facility: Illinois Power Company Licensee Emergency Classification:

Clinton Notification of an Unusual Event ,

Clinton, IL 61727 Alert Site Area Emergency fjd l Cocket No. 50-461 ~ General Emergency gch X Not Applicable

.1

Subject:

RADI0 ACTIVE WATER SPILL INSIDE EQUIPMENT ROOM l About 5 p.m. on April 12, 1988, approximately 1,000 gallons of radioactive water drained l from the Residual Heat Removal (RHR) system piping into an equipment room. The unit has been shut down since March 19, 1988, for maintenance and testing.

No one was in the equipment room when the spill occurred, but two workers received minor radioactive contamination on their shoes, clothing, and hands when they entered and ,

discovered the spill. They were successfully decontaminated.

The spill occurred when RHR system valves were returned to their nonnal positions following leak rate testing of a containment isolation valve in the system. These valve movements l allowed water contained in the piping to drain through another valve which had been l disassembled for maintenance, j The eater which drained from the RHR system was collected in the equipment room sump and pumped to the radioactive waste water treatment system for processing. The licensee established appropriate radiological controls for the equipment room and initiated cleanup of the room and equipment contamination.

The resident inspector arrived at the plant about 11 p.m. to review the licensee's handling of the incient.

The State of Illinois will be notified.

Region III was notified of the spill by the resident inspector. This information is current as of 10 a.m., April 13, 1988.

CONTACT:

Y R Gre er

[L)D$thU W. Shafef FTS 388-5644 FTS 388-5656 DISTRIBUTION:

H. St. NMBB Phillips E/W WFN 1 l Chairman Zech %EOD NRR OTX NFI5T-Comm. Roberts ARM 01 SLITP l loom.CheWth31 E00 Mail To Comm. Carr PA Resident Inspector Offices DCS (Original)

'Comm. Rogers OGC Resident Inspector D0T (Trans. Only)

SECY OGC-H FAX T0: Nicholson Lane Regions 'g i D CA TWO- RES Region I '/

GPA NSAC Region II 'g ACRS Licensee Region IV I PDR HQS, Operations Officer /j 60 Region V Region III 8804210202 880413 Rev November 1987

-I 037 DCD