ML18219D817

as Requested, Transmit Record of Conference Call on June 1 with Regard to Program for Qualifying Transmitters

ML18219D817
Person / Time
Site:	Cook
Issue date:	06/01/1978
From:	Dolan J American Electric Power Service Corp
To:	Kniel K Office of Nuclear Reactor Regulation
References
Download: ML18219D817 (7)

Text

e~c-fry ge REGULATORY INF NATION DISTRIBUTION SYSTEM (RID DISTRIBUTION FOR INCOMING MATERIAL 5/- 6 REC: KNIEL K ORG: DOLAN J E DOCDATE: 06/01/78 NRC IN 8c MI PNR DATE RCVD: 06/13/78 DQCTYPE: LETTER NOTARIZED: NQ COPIES RECEIVED

SUBJECT:

LTR 1 ENCL 0 FURNISHING INFO SUPPORTING APPLICANT"S BELIEF THAT THE FOXBQRO TRANSMITTERS THAT MEASURE PRESSURIZER PRESSURF AND STEAM GENERATOR STEAM FLOW ON UNIT 2 ARE QUALIFIED FOR STEAM LINE BREAK ACCIDENT CONDITIONS.

PLANT NAME: COOK UNIT 1 REVIEWER INITIAL: X JM COOK UNIT 2 DISTRIBUTER INITIAL:0~

pI

~>>++++++++>++++>+ DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS NOTES:

I 5 E 3 CYS ALL MATERIAL PSAR/FSAR AMDTS AND RELATED CORESPONDENCE (DISTRIBUTION CODE B001)

FOR ACTION: ASST DIR D EISENHUT+>LTR ONLY(i BR CHIEF ORBOi BC++LTR ONLY(i >

PROJ MGR REEVES++LTR ONLY(1) LIC ASST'RBWi LA+4LTR ONLY(1)

INTERNAL: G II 4+LTR ONLY< 1) NRC PDR4.+LTR ONLY< 1)

I 5 E4+LTR ONLY(2> OELD++LTR ONLY(i>

OPERATOR LIC BR4+LTR ONLY(i) EMERGENCY PLAN BR++LTR ONLY<i)

QAB++LTR ONLY(1) CASE+4LTR ONLY(i>

MIPC++LTR ONLY < ) l AD FOR ENG++LTR ONLY<i)

MECH ENG BR>4LTR ONLY(l) STRUCTURAL ENG BR4>LTR ONLY(i)

MATERIAL ENG BR4+LTR ONLY<2) AD'OR REAC SFTY+<LTR ONLY(i)

REACTOR SYSTEMS BR++LTR ONLY(i> ANALYSIS BR4<LTR ONLY(i>

CQRE PERFORMANCE BRcc4LTR ONLY<i AD FOR PLANT SYSTEMS~<LTR ONLY<

AUXILIARY SYS BR++LTR ONLY(l) CONTAINMENT SYSTEMS>+LTR ONLY(f I 8c C SYSTEMS BRcc4LTR ONLY(1) POWER SYS BR+<LTR ONLY< 1)

AD FOR SITE TECH44LTR ONLY(4) AD FOR SITE ANLYS>+LTR ONLY(1)

ACCIDENT ANALYSIS+4LTR ONLY(1) EFFLUENT TREAT SYS<+LTR ONLY<i)

RAD ASSESSMENT BR4+LTR ONLY(i) KIRKWOQD++LTR ONLY(i >

EXTERNAL: LPDR S ST. JOSEPH'I++LTR ONLY < 1 )

ONLY(1> 'IC++LTR NSIC4+LTR ONLY'<1)

ACRS CAT B++LTR ONLY(ib>

DISTRIBUTION". LTR 56 ENCL 0 CONTROL NBR: 7816500b3 SIZE: 3P THE END NM%%%%%%4 <<c 44%%%%%4%%%%%%0%%%%%%%%0

NRC 3031305 006 UNITED STATES NUCLEAR REGULATORY COMMI'DC DAILY Af'CESSION LIST 05/04/78

, FILE'EVEI S . DOC. DATE a a~mawmmmw~mwwammmwamwww~mmwwmmmea 50 515 PORTLAND GENERAL ELECTRIC'"COMPANY 'PEBBLE SPR/NGQ ¹2 50 04/23/78 ACCESSI'AN,NRRt '77308 0315 TASK DOCUMENT 'TYPE: ME,'MO NBR NBR'FICHE 515

'C DOCUMENT SIZE . '2P  !'OTARIZED!

DOCKET DATE: L'PDR REPORT NBR! 'ECP RECP! VASSALLO D B AFFI ORG: ROSS D 'F ORG AFFIL SUBJECTt SER SUPPLEMENT INPUT FOR SUBJECT So 04/26/78 ACCESSION NBR! 77311 0387 'TASK NBR!

515 DOCUMENT TYPEt MFMO FICHE NBR !

C DOCUMENT SIZE! 1P NOTARIZED:

DOCKET nATE: LPDR!

REPORT NBRt, RECP'ASSALLO D B RECP AFFI ORG! VOLLMER 'R H ORG AFFI SUBJECT! SER 'SUPPLEMENT INPUT FOR SUBJECT WITH 'CONTAINMENT PURGE IS RESOLV So 04/26/78 ACCESSION NBR! "77333 0065 "TASK NBR!

515 DOCUMENT, TYPE: MEMO 'FICHE NBR C DOCUMENT SIZE! 1P NOTARIZED:

DOCKET DATE. LPDR:

RFPORT NBR!

RECP! HELTEMES "C J RECP AFF ORG! VARGA S A ORG AFFI SUBJECT! FORWARDING" QUESTIONS RAISED BY A

~

r>>.i >>e>>

B5 5lP'l, Pt.IUITORE 9i+ui8 AMERICAN ELECTRIC POWER Service Corporation 2 Broadfoay, Neo York, N. Y. JOOOci (2l2) 422 -4800

>>y, JOHN E.DOLAN Senior Encennec Fiec Pfccuknc Esginecfing Pr +

'gQgQ June 1, 1978 AEP: NRC 00021

-Aiaa 4 1ggp Mr. Karl Kaiel, Chief Light Water Reactors

'a wg>>

5o-3 i5 Branch No. 2 9 3I@

Division of Project Managemen 4 United States Nuclear Regulatory Commission Washington, D. C. 20555

Dear Mr. Kniel:

Per your request, this will transmit to you a record of our conference call on June 1 with regard to our program for qualifying transmitters on Donald C. Cook Nuclear Plant Units 1 and 2. This conference call involved Messrs. R. W. Jurgensen and J. C. Jeffrey and myself at AEP and Messrs. R. Tedesco, T. Ippilito, C. Miller, R. Cudlin and yourself at NRC.

At the March 20, 1978 meeting with the Commission, we presented data to support our belief that, the Foxboro transmitters that measure pressurizer pressure and steam generator steam flow on Cook Unit 2 were qualified for steam line break accident condi-tions. We still believe those arguments are valid and that they provide adequate assurance that operation of Cook Unit. 2 does not involve undue risk to the public health and safety.

Understanding, however, that, the .NRC has some reservations as to the arguments we presented, we have 'established the follow-ing programs that we believe will remove all such reservations.

ROSEMOUNT TRANSMITTERS On March 28, 1978 we verbally ordered a total of 30 transmitters from Rosemountc Incorporated. The order involved 16 steam generator steam flow transmitters plus 4 spares to cover both Units 1 and 2. It also included 8 pressurizer pressure trans-mitters plus 2 spares, also for both Units 1 and 2. Delivery of all 30 transmitters is expected in September October of this year.

~

~

I'

Mr. Karl Kniel 6/1/78 Although your questions formally only relate to Unit 2, we believe it is prudent to treat both units equally.

As to the qualifications of the Rosemount transmitters, 3 differential transmitters have each been sequentially tested to meet IEEE 344-1971 and IEEE 323-1971, irradiated to 44 megarads, then seismically tested, then environmentally tested to conditions that more than envelope our steam line break accident conditions. We have the Rosemount report on such tests and we are reviewing it for our concurrence with Rosemount's statement that the transmitters passed the tests successfully. We are further checking the acceptance criteria for output signal accuracy and evaluating the results against the Westinghouse accident analysis.

The output signal of the tested transmitters is 4-20 ma whereas our'circuits require 10-50 ma. We have developed circuit changes that willaccommodate this difference and are checking these with Westinghouse. Any change will be com-pletely external of the transmitters and, therefore, not affect the test results.

al While only differential transmitters were sequentially tested, we believe that the pressure transmitters are equally qualified since they are identical in des'ign and installation except that one sensing line will be unconnected. To further confirm this belief, an individual environmental test was run on a pressure transmitter.

BARTON TRANSMITTERS As you know, we replaced 12 steam generator level, 3 pressurizer level, and 2 reactor coolant pressure transmitters on Cook Unit 2 with new Barton transmitters prior to startup. Full sequential qualification testing on such Barton transmitters is underway at Westinghouse and expected to be physically completed by the end of July 1978. We placed an additional order with Westinghouse on March 23, 1978 for similar Barton transmitters to be installed on Unit l.

Westinghouse has ordered a second lot of Barton transmitters which will include those 'we have 'ordered for Unit l. Yesterday Westinghouse of their ability to advance I received notice from'1979.

delivery toward March Westinghouse believes'hat the qualification test on lot one will be applicable to lot two, but they still intend to do verification testing on additional samples from lot two.

I mentioned on the phone that while we expect the Rosemounts to be fully qualified, we are examining the merits of ordering additional Barton transmitters as a further backup to the

Mr. Karl Kniel 6/1/78 Rosemounts on the pressurizer pressure and steam generator steam flow applications.

~summar We believe thi.'s brief outline 'of our program on transmitters answers your tel'ephone request of'ay. 31 to Mr. R. W.

Jurgensen'. Based on what has bee'n outlined, we expect to re-place the'pecified Foxboro transmitters on both Cook Units 1 and 2 not later than the'ext refueling outage of each unit currently contemplated for April 1979 on Unit. 1 and October November 1979 on Unit 2. We will earnestly examine opportunities for earlier installations following receipt and qualification of the individual transmitters.

We further believe that, based on the presentations made to you at past meetings, the continued operation of Cook Unit 2 prior to replacement of the'pecified Foxboro transmitters does not create any undue hazards to the'ub'lic health 'and safety.

Very truly yours, ohn E. Dolan Senior xecutive Vice President Engineering American Electric Power Service Corporation JED:rm

lf p