ML20216K097

PNO-78-149:on 780822,plant DM Water Sys Was Contaminated from Sf Sys Due to Apparent Leakage Path Through Check Valves.Dm Water Sys Has Been Caution Tagged to Prevent Unauthorized Use & Formal Sampling Program Being Developed

ML20216K097
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	08/23/1978
From:	Cohen L, Liza Cunningham NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
PNO-78-149, NUDOCS 9804220092
Download: ML20216K097 (1)

Text

PDP CLl A 0 Ofg PRELIMINARY MOTIFICATION 7

!h /G August 23, 1978 l ,- m i

) PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-78 This preliminary notification constitutes EARLY notice of an event of

) /(V.. POSSIBLE safety or public interest significance. The information

presented is as initially received without verification or evaluation and is basically all that is known by IE staff on this date.

! Facility:

l Consumers Power Company, Big Rock Point (DN 50-155), Charlevoix, MI f l

Subject:

l CONTAMINATION OF DEMINERALIZED WATER SYSTEM i The licensee notified the region that the plant demineralized water system was contaminated from the spent fuel system due to an apparent leakage path through check valves. The licensee is involved in an investigation and evaluation program to identify the leak path, deter-mine the use of the demineralized water, and to establish any contami-nation levels.

All plant employees, except one on vacation, have been interviewed by the licensee. It was determined that approximately 25 gallons of -

demineralized water were removed from the plant for personal use in batteries and steam irons. All but 5 gallons have been recovered. a The licensee investigation of the remaining 5 gallons is continuing. "!

' At the present time no significant contamination appears to have occurred onsite or offsite. The maximum concentration measured in batteries filled with plant demineralized water was a fraction of MPC for '

l ( _ Cesium-137 or Cobalt 60.

The demineralized water system has been caution-tagged to prevent unauthorized use, and a formal sampling program is being developed.

All possible site uses of the water are being determined, sampled and analyzed.

A press release has been made by the licensee.

l The licensee has discussed the incident with the Michigan Department j of Public Health.

A Region III inspector will be at the site next Monday for a routine inspection and he will followup on this event.

Region III received notification of this occurrence by telephone from

the licensee at 2

00 p.m. on August 22, 1978. This information is current l as of 10:15 a.m. , August 23, 1978.

h Contact! LKCohen, IE x28188 LJCunningham, IE x28188 l 0 i

l R Distribution: Transmitted H St 4.'2 T Chairman Hendrie Commissioner Bradford S. J. Chilk, SECY

$E Commissioner Kennedy Commissioner Ahearne C. C. Kammerer, CA 87 Commissioner Gilinsky (For Distribution) 7R e i Transmitted: MNBB Mla '

L. V. Gossick, EDO P Bldg %!3/

H. R. Denton, NRR J. G. Davis, IE S. H. Hanauer, EDO Region g d,' y N J. J. Fouchard, PA SS Bldg 4C 3 2 (MAIL)

\ M. M. Haller, MPA C. V. Smith, HMSS 0. G. Abston, 01A ~/

R. G. Ryan, OSP ;3 R. Minogue, SD o H. K. Shapar, ELD - '

,0 pr