ML20085F534

From kanterella
Jump to navigation Jump to search
Amend 2 to Change Request 25 to License DPR-4 Re Permissive Switch,Variable Frequency Motor Generator Set Mods & Safety Injection Sys Flow Totalizer
ML20085F534
Person / Time
Site: Saxton File:GPU Nuclear icon.png
Issue date: 10/10/1967
From: Neidig R
SAXTON NUCLEAR EXPERIMENTAL CORP.
To:
Shared Package
ML20083L048 List: ... further results
References
FOIA-91-17 NUDOCS 9110220206
Download: ML20085F534 (7)
v • d • e


Text

. . .

.V' SAXTON NUCLFAR EXPDtIMMITAL ColtPORATION DOCKET No. 50-12.6 r ' V of C a p!Iance LICDiSE DPlt-l.

Change Request No. 25 Amendment No. 2

1. Applicant hereby nutanits Amendment No. 2 to Change Request No. 25 to the Saxt on Technicial Specifications as provided for in 10 CFil 50 59,
2. To support the requested change applicant sutraits revised pages and '

figures to the SAFEGUARDS REPORT FOR Tile SAXTON ltFACTolt OPERATING AT 35 FNt, dated December,1966 and revise 1 figures to Amendment No. I tu Change Request Nc. 25 SAXTON NUCLEAR EIPatIMDITAL CORPORATION By /s/ R. E. Neidin President a y 17 FM W h'f -

3370

, !, + *

  • Revised 9/1/67 shall be added to the reactor trip breaker circuits via aux 111-ary relay contacts (BLX/UF1) and BlX/UF2 as ahown in Figure 111-2 (Dwg. 883 D 175 attached). Circuitry shall be stranged such that cetuation of one underfrequency relay will trip both reactor trip breakers via the auxiliary relays acting on the breakers' shunt trip coil. The second underfrequency relay will operate in the same manner as the first. Both auxiliary relay circuits shall act upon both reactor trip breaker under-voltage trip devices.
  • This arrangement will prevent reactor trip for normal small fluctuations in f requency while assuring that a loss-of flow could no occur from a significantly reduced flow condition.
3. Permisolve Switc)

In order to over-ride the above reactor tripo during low power operation or during startup, a manually actuated permissive switch (69) is installed to over-ride the above trips only when the reactor is to be operated at a power of 23.5 MWt or less.

These trips can not be overriden if the power level is above 23.5 MWt and will be automatically restored when the operating power level is increased above 23.5 MWt as shown in revised vigure 111-2 of amendment 1 (Dwg. 883 D 175 attached).

i 111-3

e,e

  • Revised 9/1/67 C. VARIABLE TREQUENCY MOTOR GENERATOR SE1 MODIFICATIONS During the increased power operation of Core II, the reactor cool-ant pump will be supplied with power from the variable frequency motor-generator set. A description of the motor-generator set is given in Section 218 of the Saxton Final Safeguards Report. The motor-generator set will be used to assure an increased flow coast-down of the reactor coolent pump in the event of a loss of AC power to the plant. The modifications to be made to the plant electrical system to provide the increased coastdown are described below.

Trip circuit additions to assure normal motor-generator set fre-quency are deocribed in Section 111-B-2. A one-line diagram of the modifications is shown in revised Figure III-3a (EDSK 329325, Sheet 1 at ached).

Measurements of the reactor coolant pump flow coastdown with the coastdown energy of the generator have been made at Saxton and are the basis for the curve used in the loss of flow accident analysts presented in Section VI-C. In order to assure that the generator coastdown inertia will be available in the event of loss of power to the motor-generator set, the excite *, field supply of the genera-tor will be automatically transferred from the A-C driven exciter to the*1tSV Stat, ion Battery Bus. -The transfer will be accomplished using a live transidy-schgee in which the generator exciter field supply will be connected to the station battery prior to the open-ing of the tie to the decaying normal exciter field supply. .

The signal to accomplish the transfer will be initiated by loss of voltage to the exciter field control or loss of variable frequency generator output voltage, see revised Figure 111-3b (EDSK 329325, sheet 2 attached.) Redundant undervoltage relays are provided to initiate the transfer signal in each case (Items 27-1 and 27-2 and items 27GX and 27GI). l Redundant transfer equipment (Items T-1 and T-2 are also provided-to assure the completion of the transfer. The connection of the generator exciter to the battery bus is paralleled through the t ransfer equipment and the connection to the normal AC supply is in series through the equipment so that either set will perform the necessary transfer functions. The power required to operate the transfer equipment will also be taken from the 125V battery.

III-4

, e i , .

D. SAFETY INJECTIO!1 SYSTDI FifM IUTALIZER I In order to meet the IEEE single raode failure criteria, the j

automatic stopping of the cafety injection pumps has- been l rmoved while the alaru feature has been retainci.

This has been accomplished by renoving the contacts of control relay FIC-21CR from the trip coil circuit of the ,

S.I. pumps.

f a

b a

In-9 mwe reww w i ow ww ww--ewe -S w -e w e- i =. ww w -v-vv y-we m

__.. . . , , v . . .

,;. -..py,z .

GL'tO f98 ' ' ,Y

'.\

_7_ut. . - . _ _ _ _ _ _ _ ._ _ _.y r

,,_, . .w.f,n

    • .'.' r$i$% sa-

~,,, ': ,,,  ?'::.y'e. ". . . us s-. _ h

  • e >< y >.,y ktsa .I

, . l' .

5v .o

_ __ _ e sj >=

d C

-_ . +, . _ . .

_-+.-

. n.

3, 3,,,.g3, s un

- % I7I i

8 J

k. ,, , , t..t. 2 t % t, w wq,tascM *Nj

's t: cat tis ,arastest  ;( 1)

.O. ti ... t y..1,91:-. 4..i ._. .it se. v,, g .I I

.+ .- o g. , , .

lf f s. es.y i I

! T 4___\ _ , _ __. m.~ _A. l l

, .,, et  : ,, b . _s _ -. - . _

1 e e" y" e,,

o j g - Trg-' ' ~~', l I sn 6-

,a t

.e

't r

i

, \.  : . is t * .

-ca A i*

i , s.A.88 s I lg .

l E

2 * } (v%c i r s; t t l e.w J

(. . g _4 7' ,

e 4 81 . . .

g,_ _g__;j ,. p , t.s

, ,1. .v. . ..

, .... . l \ g iii ,

i i r 8'

.c.ev -

t j l ' gs,' Ls .-: nJ .'

,n e, . .. p . . .. 1l; j S

+**.s- .9 ri g -

l }..re. s, t - n *1- \ l J

[isa l'.A

, .e s 4 gj ( , l t

  • n . + -. .- - _ ..  % . m?'~ .,.yp q.%y) ? , '

g

al.-e rcihm l- . . .

ut r.* 1 3 3 < ; :.( s 2e e s 9 4 a e s;

  • s s a + 4 .+
  • ~~~'~~ **~

4 M8 A W' 6 8;t 4.as'l- e1

e su C G5 s's W ., #4CCG.atgk *ng swg s> ois,, s y _

A W .s( ALA PRw M .4M 1 m- . ,1 a .

1 .. . , . , ~ ,

~

it N # $ d

  • f,giaw , g *. .g*I 6 g*gM A
  • o 8

4

s pg.'31 m a st ye aiew *

- A %TE ,

  • '*  % i J 66 ' i 8 t) 14.

e <

' { * ** ._.

  • 4%

$ {O g, a .,. 4

.1O m "% _

____,T +  %- ..

l a e acne s.g ,,,5 c & a

  • d ~64,- -..+ -

g sia y p o., - g ,g,, g oy og g ,

5 >At 0 Oa*

c=t40bSo*t0 m g gg 09 ma A.*4 (po6**si o a.P v 4.omSht1 b PER, 6 At Dwa %& %1til su eve t)

D K% c ist.JP *s0'*L 's Caat.6 E Set. AV s 4.?te?AnL1

'9 'sC' T9 't' ( ow f A&T Coe ltt% DEA"lLA 41LS h 66. k [41 -

RIL'Vi> E t) . St / t

  • w 6,%4 6 6 4. s. st* 4 a'p' a t ov %;.= otsst ELEC te c Com.aom at.co.

g , >*** e, u g*, g .,j . 4 .}, a.aw s e4 a.e o< v e.ette,es= es .se

"' T J p# /.w-.4' y

g i G* 2 "-

  1. , , .1 ** 14t f 0 ** IL ALT 08L Pt.?J L'T i- 4 o

}y, 3 p?;.(

o -

i 3'"-

. ,,tattoa taie cimevits

__ l g s.f?.;_.

d. -- *-
M v "."-. - , , ...".."..- , . ..18 ._ 8 3 D 17 5 1 -_

s w.'

. .u-v" - s' '***r'*we,. ,

.

  • 4 , g g s'.g ;,j p e . . , g , 4 ,

, SKETCH 5HEET ,,

. ,4- ' , , ;. % . . .%) , r g. e ..i . g. - -

s.4s om teus a:~.fy,ha

,9 ,

e,. 9s. '

  • WESTlHGHOUSE ELECTRIC CORPOR ATION ,[ ' . ,,.'

T aw ee r.n c, .

t g ,

4

'd 4 . +. .

N kN s .

p,At. i k

3 }( .-

e p

( k \

\

I

. . r I sk z.

S L

t u 1 ( '1.

&< , (' N '(/

,. y 3'. $e "* ,

,- t .-

r

N .

~ s a, ..-

f s.

I g. 'M ., lT..: sp; c, I o i g z.-.-

v

-- ' 6, , e

.. H , r: .

g'i kw k *

,. - ./*

_ m s. ,

j * ', l'-

u i . . . - . .w ., ,n

~ }., t -

.= x . d,

_ ,k . .', .,'5 :.  %

k t

en ..,.. ., s, $p

, As- '[;' j' f

p ;g g

w w Q

, . rn

.q.,ve [v '

n.

J b i w $,t.

E 1 i

I ie

< 4 N

+. . i @ .

s N

Mr%l.4*u

. ,. . . .3 *Te

r

! ,- l cQ L -'

6" 9kI

' ' ~ ' ~

  • j -
k. .h,.

,j j . ,.

%. /

A .. .

, ,. , . ji',p h.

) b t g% m  :. i7w yu,, <f*f'. je I ?j'g q( ,

b b-l ( ;% E Mj'l .f;YJjle. fl 4 .. l

, c' ,k W

  • N & \ $ .

j U f ,

h5 k,'I M.A._ X ~

-4.h'dAh.t w V/ i / *a 's , , '. .'. " l !"6; f .: 7X/ A*J'.*V' ( .5 ~' A'4s V.t" m. , WS , . . -

1

~ ,'.

C Nd "Va~ D!s - fp,,5Jf3ky32.'G;.LW y-

. t.a v 2 ,9,si,, c. a -Ae++- 4rfo -4M- + % ? h f -N. X'. &... 2,u.-Ya .

4 f,g e '*'%** * . ea s

g D j f _ .

j

.N w

y{

s . .

H/ Mn NL Nf

(~) f 23o/440 -//J'Y XL p ac pl

.L 1 1 /.C.4 AF4 i

i r '

- .B .

M A

I (h,,,'

s, g '

i .

h j ~NA O -

4 Q.. . . .,

,.VfT 3 '

'>\\t%

4 3 Yo 2

\"

) ,

frr' DYA%rtsne PW6, /D-M243 v g <) \I '

  1. o Qh(2 d\ $$ '- /

) D *4 t h i . - g x = c, 1 b.  ; .

kk ,

'. Coararr.1 70 at NMr Btrotr Attr'k.

. w ,~ ,,ne ,u w - e x,sa, By r*2 A MrcA. Sturc.V efcXJ7Yed .

3 T/.5JrrcM r 12 xxs st.

steers >iesay,vic.o rssourrx z,u[k scme s 1

- ,aruns,exe- ,e.

l rm.m.n  : -

YT' YYL . ' Y'h'..F. .ase t *AN

-e k7 .h.?Sy fu 5b.N o

_m..- .

g* . # ' '

'g en.1<r &&Iha'rk~ -

~-M vse rtto a n

,<< s r u o u a $+rdhttHMMWN!i@?g$??N

..pya w x.;;ng;sy9gy w v um -, . -

. , .. ? . . -

(o n Ex.c cr' .ftc r. a s co- ea co< c e) j; A c#

y-f& .,r..c .x -jfg .p %y.;

, , 'J.' . M M .,. 2 . *t{' _

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ -_____U_ - - - _ - - _ - - _ - - - - - - -

Retrieved from "https://kanterella.com/w/index.php?title=ML20085F534&oldid=2739747"