ML20094B888

Forwards SEP Topic III-10A,Thermal Overload Protection for Motors of Motor Operated Valves. Methodology to Determine Optimum Setpoints (Heater Size) for Thermal Overload Relays Developed

ML20094B888
Person / Time
Site:	Oyster Creek
Issue date:	07/30/1984
From:	Fiedler P GENERAL PUBLIC UTILITIES CORP.
To:	Crutchfield D Office of Nuclear Reactor Regulation
Shared Package
ML20094B892	List: ML20094B888 ML20094B910
References
TASK-03-10.A, TASK-3-10.A, TASK-RR NUDOCS 8408070300
Download: ML20094B888 (3)

Text

.

U M7 GPU Nuclear Corporation 100 Interpace Paraay Parsippany. New Jersey 07054-1 '

s (201)263-6500 TELEX 136-422 Writer's Direct Dial Number -

July 30, 1984 Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch U.S. Nuclear Regulatory Commission Washington, D. C. 20555

Subject:

Oyster Creek Nuclear Generating Station (0CNGS)

Docket No. 50-219 SEP Topic No. III-10A, Thermal-Overload Protection for Motors of Motor-Operated Valves During the integrated assessment of the subject SEP topic, GPU Nuclear made a comitment to evaluate thermal-overload relays f.or the motor operator for each engineered safety feature (ESF) valve.

GPU Nuclear has recently developed a methodology as described in the attached report with which to determine the optimum setpoints (heater size) for the thermal-overload-relays.

satisfy Regulatory Guide 1.106 position C2, which requires that theThe m setpoints be established with all uncertainties resolved in favor of completing the safety related function.

establishing these setpoints to help ensure completion of the valveSafety l operation while still providing motor protection.

A sample calculation for sizing the thermal overload setpoints on Core Spray Isolation valve motor operator is included in the report.

m{ $ g 8408 LA

( e 070300 m 840730) y g g.

GPU Nt.Ciear Corporation is a subsidiary of GeneralPubhc Utilities Cerocration l f

j l

~

2-l GPU Nuclear plans to utilize the methodology provided in the report for the remaining ESF valves in determining the setpoints. The evaluation and modification, if necessary, are expected to be completed by March, 1985.

Very truly yours, aa ys 2

5- gf'

.n ]

. . . " : CIIer Vice President and Director 1r/0331e cc: Administrator Region I U.S. Nuclear Regulatory Commission

. 631 Park Avenue ,

, King of Prussia, Pa. 19406 NRC Resident Inspector Oyster Creek Nuclear Generating Station Forked River, N.J. 08731 l

l l

. - - _ _ _ _ _ . _ . . . - - _ _ c-

^

( w sn. noe s\ % D WrMcHw!f' Abe 3

' Obsolete Devira m.: m anempo,se -t-me e n.," e,,s.t.

L ,

Table 48, muA Base 00,0, a i Table 48 NEMA Sue 2 Table 50, NEuA em 4 e Use Column A For- Use Column A Foc Use Column A Foc O CRios, CR10s@, open Types 4,7, e CR10s, CA10e@, open. Typse 4,7 s CRios, CRice@, open Typee 4,7. s

(\ CR110. CR11J@, M Endoeuke CR110, CM111@, M Enclosures CR110, CR111@, M Enctosures

• CR124At@@, Open or Type 1 CR12481@@, M CR131P@, M CR133C@ CR131D, CR1330, CR1340@, Ah CR133P@, M Enctosures Use Column 5 Foc use Column B Foc use Cetumn 5 For CR100. CR100@, Typee 1,12 - CR108, CR100@, TW 1, t'2 CM108. CR100@, Types 1,12 CR107. CR10e@, M Enclosures CR107. CR100@, M Enclosures CR107. CR100@, M Enctosures CRmC1@ CR1a0Ca@ ,,,,,,,,,,,,,,,,,,,,, ,,,,,,e,,,,,_

"""""'"*4"8""*" "" """' '**"d As w n,,,,, e., ,, , ,, e cAir3 nasier Cm see.

CA183 Cat. e

1. 88 Cetumn A Cetusne o col. A ,, g 3, 3 p3,gg b 0 41 7  ! 34 0 38 CaseA Coa 3A .

g se "iis M 7A gg as gg pgg g 0 Oo C . .. .F.75 C A .

0 &2 0 4F COMA 9 e3 9.83 Ctete #3 87 8 8e&8e 0 17 0 52 C0e0A t 1.2 10.7 C11Se N! lyl "y $

p 0 75 0 00

Sam C070A i'i 19 5 14.3

'i;!'

CtSte g: g; ;rg 0 e4 0 77 Cos7A 17.4 te t Cis3s 100 es 7 F10eC

0. 07 c.,A 1. . ,,.. ei.De ;g g  ;;;g 1 03 ON C100A fi t 10.3 C190s 12 110 Ft33C 1 14 1 04 Cit &A It ? It 4 C214e ""* t= FleeC 1 30 t 10 C13tA 9e 9 39 8 CSSee 1 42 1.30 CtseA 37.3 3e 3 CeB0s t sa in i;:n Ctosa a0 as e C33ee Table 51, wEuA sa. s Use Column A Foc

^

'j! j!! $*'3u 2

$j EE CR108. CR100@, Open, Types 4, 7,9 e4 a ao CsesA

-- as O Cae0s CR110 CR111@, M EnCicouros 8Ij rg y C

Table 49, NEMA Sue 3 CR131G, CR1330@, M 33: S or C== Use Column 8 Foc

'" C

, '3 ' , ' , use Column A Foc CR108. CR1097), Types 1,12 a ei e to CaesA CM106, CR100@, Open Types 4,7,9 CR107. CR100@, M Enclosures A s ei a r3 Cm" CR110, CR111@, M Enclosures IN !N $ EI CR131E@, M ""'""*'"'"*"" Hesse Cat no.

'" II e s3 e 21 CR123E@, M Enclosures set. A Cet e t To e or CeesA -

CneA e as 7 s4 Ces7A Use Column 8 Foc 7e . . _ C37sA

jj ll4 $I$$e CR106, CR109@, Types 1,12 $l gl too

@jj$

CueA ni en Co3e CR107, CR100(D, M EnCicoures $0s ir e ic e Ctese in ict Cms 13 5 12 o C1378 esos Isoter FuNeed Angevee Hedw Ca. he' 'II d 0 "30' ia 6 83 0 CtSie CR183 137 127 CSMA et t to 3 C163e Cef. A Cea. e 151 137 C77&A 17 e47 Cae7A iP 9 IS O Cie00 ISS IH CMSA s93 17 0 Cio18 23 t 39 F243e 26 is t C2 tag M3 23 5 F27 e 1 17 M5 35 S F3cce ,3.,3 gg$ Cte,dB g, 3g 22 6 19 9 C22te te 9 21 0 Ctsee 30

• t' 1

,,, ,,, == =3 r=r F32e ,tsea to,t

,. C1,218

,, 3 C ,,3e Coe =. n. r. m r2, C n.

Cli' 27 0 C33os o' ' 37 i snoe ,,o ei 3e

r

n wa

': - a c'=

Table 47, CRi0sk. st2e 1P@ so e itstas

.1 e u. e free te,eteewre oewise 8y 8 yI "

n o, e ,e,

i. i, Caio. n. .

n, ,,..

, .e se . r, ,t C teen. tieter edester Cat. Ice. (10 FtteC Fus.4eed Amtsree CAtt3 15 t . . . . . . - CtSto ter eve. sat sevees are now sesseied Dy tyse of is 7 1s o Cisse O Meetm,s onasov Ca in, e we64A Type Encessen. page tO g  ;;; g;g: e rt.ee -e

---

e=

.se e, e_o .ete,. v.e.

,,. ... C ,,.e gg gj C2ge

@meDo,nos noi. .enyuse tabie, nee . toeme. C,Rt!4 warse,.es te siene,e ,movated detect'y en nr us e Ctr3e G O'*'*** ***"*

3i e at e Cme @ Ttwee swames reeuwed as 0 30 7 C33ce 33 5 C3ese 38 0 Cacos k

..