ML20246L408

Followup Special Rept:On 890227,detector RE-063H & Preamplifier RM-063H Found Defective.Replacement Detector Purchased & RM-063H Will Be Fully Operational by 890515

ML20246L408
Person / Time
Site:	Fort Calhoun
Issue date:	03/17/1989
From:	Morris K OMAHA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LIC-89-246, NUDOCS 8903240170
Download: ML20246L408 (2)

Text

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March 17, 1989 LIC-89-246 1623 jHarnet Omaha, Nebraska 68 Omaha P 402/S36 4000 102 2247 U. S.

Attn: Nuclear Regulatory Commi ssion Document Mail Station Pl-137 Control Desk Washington, DC 20555

References:

1.

2. Docket No. 50-285

} Letter OPPO K dated Februar(y. J. Morris) to NRC (Document C Inoperability7,1989 of Main (LIC-89-161),

Steam Li a Speci l ontrol Desk)

Report on

3. and Wide Letter OPPDfor Range Noble Gas Post-Accident Monitoring n Stack Mo itne R K ,

g=

Inoperability 23, 1989, of Wide LIC-89-227), Special Rang (e N ontrol DeskReport o ) bd for Post-Accidentg Monitorin n

SUBJECT:

o le Gas Stack Monitor RM-0 Followup to Special Report Gentlemen: RM-063H for on Post-Accident Inoperability nofor Main n toring ne MoSteam iRa Omaha Public Power District ments of Fort Monitoring Calhoun Statio(OPPD)

Instrumentation "n Technical Spesubmits if thi of one channel for . c ble in Modes 1, 2noble and gas 3RM-063H ication 2.21 andre-one chann

" Post-Accident minimum operable Ifchannels the stack monitor RM-063L, RM-063Mequi main requi steam line radiation monit a submit a Specialrement, number Report OPPD of operable tomust orchannels theeither rest is l Cchannels RM-064 be operand to operab 5.9.3 within 14 days followi ommissionn seven days of ess than the orethe theevent inoperable

, or prepare and RM-063H and RM-064 and indic preferences 2 and 17, 1989. on 1989.

Monitors RM-063L a ed thatand theseRM-063Mmonitors

- 3L would be inoper RM-063M, were returned to e opera,ble by March service on March 13, PDR8903240170 890317 g

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o '* , - U. S. Nuclear Regulatory Commission

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LIC-89-246 l On February 27, 1989, wide range noble gas stack monitor RM-063H was undergoing ,

calibration when detector RE-063H and RM-063H preamplifier were four.d to be I defective. A replacement detector has been purchased from the manufacturer j (Victoreen). Victoreen has informed OPFD that the delivery date of the replace-ment detector will be March 28, 1989. It is planned that RM-063H will be fully operational by May 15, 1989.

Upon receipt of parts for Main Steam Line Monitor RM-064, replacement was  !

completed. The vendor was contacted to verify proper calibration technique because the secondary calibration had only been conducted during an outage in the past. Results of the conversation indicated that a primary calibration would be required in addition to the secondary calibration. The original primary calibration was performed by-the manufacturer; OPPD has not performed a subsequent primary calibration and consequently did not have a procedure for ,

doing so. The secondary calibration is currently being conducted, concurrent l with the primary calibration procedure development underway by the Chemistry Department. It is planned that RM-064 will be fully operational by May 15, 1989.

If you have any questions, do not hesitate to contact us.

Sincerel ,

h ,

K. J Morris Division Manager i Nuclear Operations KJM/dm c: LeBoeuf, Lamb, Leiby & MacRae R. D. Martin, NRC Regional Administrator P. D. Milano, NRC Project Manager P. H. Harrell, NRC Senior Resident Inspector 1

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