IR 05000213/1985008

Ack Receipt of Informing NRC of long-term Corrective Actions Planned to Resolve Signal Cable Transmission Problems Between Meteorological Bldg & Control Room,Per Insp Rept 50-213/85-08

ML20215M693
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	10/23/1986
From:	Martin T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:	Opeka J CONNECTICUT YANKEE ATOMIC POWER CO.
References
NUDOCS 8611030167
Preceding documents:	ML20236H228 (23 July 1987)
Download: ML20215M693 (2)

Text

_

.

I i '.

DDT 2 31986

.

Docket No. 50-213

~

Connecticut Yankee Atdmic Power Company ATTN: Mr. J. F. Opeka Senior Vice President - Nuclear Engineering and Operations Group P. O. Box 270 Hartford, Connecticut 06101 Gentlemen:

Subject: Inspection No. 50-213/85-08 We have received your letter, dated October 3, 1986, outlining your long-term corrective actions planned to resolve signal cable transmission problems bet-ween the Meteorological Building and the Control Room at the Haddam Neck Plan These actions will be examined during a future inspection of your Radiological Environmental Monitoring progra Your cooperation with us is appreciate

Sincerely, Oririn.6i 5iero II7

.

/ y as T. 'Ma t n, Dirdcior Division of Radiation Safety and Safeguard 2 cc:

R. Graves, Plant Superintendent ~.

D. O. Nordquist, Manager of Quality Assurance R. T. Laudenat, Manager, Generation Facilities Licensing E. J. Mroczka, Vice President, Nuclear Operations

' Gerald Garfield, Esquire Public Document Room (PDR)

Local Public Document Room (LPDR)

Nuclear Safety Information Center (NSIC)

NRC Resident Inspector State of Connecticut D611030167 861023 PDR ADOCK 05000213 G PDR -

'

/

J OFFICIAL RECORD COPY RL HN 85-08 - 0001. /21/86 j[4$

. - . . - .

-- _

_ - _ _ _

.

• - Connecticut Yankee Atomic 2

,

Power. Company bcc:

Region I Docket Room (with concurrences)

Management Assistant, DRMA (w/o enc 1)

.Section Chief, DRP M. McBride, RI, Pilgrim J. Shediosky, SRI, Millstone 1&2 T. Rebelowski, SRI, Millstone 3

J. Akstulewicz, LPM, NRR Robert J. Bores, DRSS i

j

,

/

'

i f

R D SS Y

RI:DRSS RI:DRSSd43 R:QRSS Weadock/e'mw Shanbaky Pas tak Bellamy 10/)3/86 10/4/86 10/ /6 10//A/86 0FFICIAL RECORD COPY RL HN 85-08 - 0002. /21/86

, , _ - - - , -__ . __ - . _ _ -

. - . _ - _ - _ . _ . _ . . ._ _ ._. _

r

.

. .

'.

CONNECTICUT YANKEE ATOMIC POWER COMPANY B E R L I N. CONNECTICUT P O BOX 270 HARTFORD. CONNECTICUT 06141-0270 TELEPHONE 203-665-5000 October 3, 1986 Docket No. 50-213 B11652 Mr. Thomas T. Martin, Director Division of Radiation Safety and Safeguards U.S. Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 References: (1) T. T. Martin letter to J. F. Opeka, dated May 20, 1985 (2) J. F. Opeka letter to T. T. Martin, dated August 14, 1985 Gentlemen:

Haddam Neck Plant Inspection Report No. 50-213/85-08 Informational Letter in Regard to Unresolved Item No. 50-213/85-08-04 I&E Inspection No. 50-213/85-08 identified an unrer31ved item (No. 50-213/85-08-04) in regard to Connecticut Yankee Atomic Power Company's (CYAPCO) inability to bring meteorological monitoring equipment within tolerance ranges specified in cali-bration procedures. As pointed out in the inspection report, CYAPCO attributes this problem to defects in certain pairs of the underground meteorological signal cable between the Meteoro-logical Building and Control Room. Because of this problem, CYAPCO committed to provide a short term solution and evaluate potential long term solutions considering the recurring nature associated with the underground meteorological signal cabl Again, as noted within your inspection report on March 31, 1985, during a phone conversation CYAPCO confirmed that a short term solution had been accomplished. This was done by utilizing spare pairs within the existing cable for meteorological signal trans-mission. Once this switchover was completed, successful instrument calibration was attained. This short term solution did not address the concern about the long term ir2tegrity of the underground cabl f( .L f l +$ '!^.! $ 0 -

.

. . .

, -2-

In response to your second request to evaluate a long term solution, phase one of the two part action plan committed to in Reference (2) has been completed. A supplemental means of data transmission via use of an on-demand, dial-up data terminal was installed in the control room to obtain meteorological data from the mini-computer at the base of the tower, via a telephone line completely separate from the underground meteorological signal cabl This terminal was operational on October 1, 1985. The strip chart recorders remained operative. Thus, there are presently duplicate paths for getting meteorological data to the control roo The planned final solution to provide meteorological data access in the control room, which we initially planned to have in-service by October 11, 1986 per Reference (2), entails replacing the existing analog recorders with digital data displays and installing a dedicated, real time data termina This will continually display meteorological data which will be digitally transmitted via a telephone line rather than by the existing underground cable whose long-term integrity is uncertai The request from the station for corporate engineering assistance was delayed due to relatively low priority (the interim fix worked well) during preparations for, and conduction of a major refueling outag Evaluation of manpower resources by corporate engineering, when the request was finally received, determined that an inservice date of December 1, 1987 would be reasonably achievable, given other work in progress or already planne This is the date by which CYAPCO intends to implement the above described final solutio Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY

-

J% f. Op6Ma Senior Vice President

.

)

. _ _ _ _ . - _ _ _ _ _ _ _ . _ _ _ _ . _ _ . _ _ _

_