ML18078A826

Forwards Responses to Request for Addl Info Re NRC Question 13.9 (Preoperation Testing) Parts a Thru D.Encl Info Will Be Incorporated in FSAR as Amend

ML18078A826
Person / Time
Site:	Salem
Issue date:	02/05/1979
From:	Mittl R Public Service Enterprise Group
To:	Parr O Office of Nuclear Reactor Regulation
References
NUDOCS 7902080164
Download: ML18078A826 (11)

Text

e PS~G Public Service Electric and Gas Company 80 Park Place Newark. f\\l.J. 07101 Phone 201 430-7000 Director of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washin~ton, D*. C.

20555 Attention:

Mr. Olan D. Parr, Chief February 5, 1979 Light Water Reactors Branch 3 Di~ision qf Project Management Gentlemen:

RESPONSE TO REQUESTS FOR ADDITIONAL INFORMATION NO. 2 UNIT SALEM NUCLEAR GENERATING STATION DOCKET NO. 50-311 Public Service Electric and Gas Company hereby transmits 60 copies of. its responses to certain of your requests for additional information to NRC Question 13.9 (Preoperation Testing) parts a thru d.

The information contained herein will be incorporated into the Salem FSAR in ari amendment to our application.

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

Enclosure 79020801Co~

The Energy People R. L. Mittl General Manager -

Licensing and Environment Engineering and Construction

. ~* -

• e OUES.7!01;.13.9(a) (lr.. it'ic;J Testinc).

• .The test*rr.etbods and plant.'s electrical syst.err.*s status.nee::'to be defined fer **test~ that will be c::o0c-.:ctec to. satisfy reg~1~tory pcsitions~in R~culatorv;GGi~e 1.,li -~Pr~6per~ticn~l T*esting of Redundant-bnsit; Elect~i'cai Power Syster.-:s. to *.* * *.

• Verify Proper.Loa:* Group. J..ssignmel"Jts.**

if e.xceptions t.o this*

9u.ide ere.. faken*, they should. be *explaine~ in _sufficient det'ail

~6 sho~ that. th~ plant*s~jtu~ an~ te~t m~tho6s-will provjd~

.. equival'er.t. assurance of proper load _c;tcui:. assigrir.1ents and

• i n de:=-: n den c e bet we.er. t e d u n cfa ri t AC and DC sou t c es of on s i t e

.po\\.ier and independence' fr-orr. ofrsite *power *sources.

• Other"Wise,

• the test. methods d_esc::ribed in Re.gulato.ry Gui'oe L~l wi.ll*be reguirea_ by_ the staff.

ANSWER.*... *.

The No.

• 2

• Uni.t ** ini tia.1.preoperationa_l._test.progr~* is in full.**

~onforrnance with the* Reg~latory *guide wh1ch: f1inctionally.

dernons.trates <the.independence among redundant onsite. power.

s6u;r-ces***and their' load groups.

This. is.accomplished b~* the.

• . performance 'of* the In.tegra tee Safeguards Test. **.As stipulated in part, c~ 1 ".of. the guide, isolation from the off site trans-.

mission netwo~k ~ill.be accompl,ish:ed,;by'.the.direct actuatiC:in'

• _o'f ~he.undervoltage.*s~nsirig relays. (openin'g_the 4 kv.AC.

.. unde:rv~l tage relay knife. swit'ches*)... All loads off the No. 2 Unit group buses not required tb*mairita.i.n necessary.. and*

.*independent construction. and testing activities, as well. as badkup power t~ ~o. 1 Unit,~ill b~ de-energized to the maximtirr. extent practical..

The* functional. testin~ requirerrierits covered.. under c. 2. and c.3 of this guid~ate ~erformed as part of the Integrated Safe~µards Test.

P78 l 70 49 013.,(*)

~...

'QUES~I6~.13;~1b).

Ou r.po s i ti on re la ti ~ e to yo i..l r pr c p Os a l. to

• e n rd na t. e. the < * *.

turb'ine tiip test frorr, )00 percer.t power is that it is.n.ot ac-ceptable.~. PSE&G* shoulcf b~ modified 'to* include. tr.is test or

• • • .tti:e**follo.... ing _a'C(:iti:6nal inf~rir.ation *sr;ouid be provided:

1. -'Provide* a-~list1ng *of* all in:itiating event:s or con_ditioris' that*- r*esult. in opening o.f. main generat,or output breaker.

2.

Describe w!:dth trips*lis.ted. in.. iteml will result in a direct turbi'ne trip -event and which trips.~iii result...

in* a turbi.ne trip event via sensed T-G overspee'd co:ndi tions.

~-* 't>escribe. the automat*ic transfer functions-.for. the.plants.**

.electrical dist("ibution system along* with asso~iat.ed *time del~y~~fbr each iriitiatihg *event or.conditi~riJ 4~.. Desc.rib~* the means by which yo.u plan to initiate t.he genera~or*load rejection test from 10.0.percent power.*

ANSWER*.***

.1.

Table Ql3. 9-1 1nai'i;=ates *the initia_ting ~vents. which cause

. opening of *the rr,*ain.*genera-tor*. ou~put ~break~ts :a~d thos~ wr.i ch

.result.. ir:i*a. turbirie;trip.* ;he initiating.. events.are gro.Lrped_t.o*

ind i cite. whether th'ey Cl ct to. *cause. ~ di~ ec t' 't u"r bi'he tr f p. 0 r-a turbine.trip;via_ a.~om~?.n.tripping.device.** Refer.to :Fig~re.

Ql3~*9-l for information.regarding the *breaker.setup.

2.

~s indicated. in T~bl~ Ql3.9-l, all automati~ generator breaker*tri~s (bdth breakers) wil1 ca~se a di.rect turbin~

trip.

Only a manual trip of both breakers will not cause a

.

• dire c.t

• turbine - tr i ~;.

This wil.1 not cause. a turbine overspee::

trip but r.esult in. a. reac-tor tr:ip through primary system pa~amete~s ~n~ a*sLlbs~quent* tuibine trip~

An individual output-breaker trip wili. not.tause a t~rbine tri~~r overspeed P78 110 50 Q 1 3

• 9 ( b )* -1

E:r:c:e th'e.g_er:e~e.to~ st:.lJ.

he..-~

o~-:.;::: tc

-:~.e el~c:.r:.cc..2.

via the re=ai~inf o~t~~~ treaker.

C""".*':".... ~-

~.J Cperatior. of the ucit ~itt cnly one genera~or breaker i~ service operatin£ coLditioc used durinf peri6ds of mainte~a~ce ~tict re~uire the condition.

~ny trip signal which nor~ally opens tot~ generator breaker~ and causes a direct turbine trip is unaffected ty having one treaker open prior to the trip signal.

The trip signals listed in Tatle Q 13.9(t) wtich nor=ally open only one generator breaker and do not produce a direct. turbine t~ip would perfor= in the same reanner if a generator breaker were o~en prior to th~ trip signal.

In this case, the unit would respond as if a manual trip of both generator breakers had occurred.

the transfer of... *re L v \\T -,..c.,.,..,

e:.-

'-'.!:-' tusses fro:::. tre transf~r is acco:::.plished i~ less* than one second.

wben all of :~e follo~ing con~itions exist:

a. 3cth 500 k~ genera~or breakers are open.

a*..:.xiliar::

D.

Fcten~ial exists on the Station Fower Transformer.

c. None of the pro:e~tive trips have occ~rred (i.e., b~s differential, bus overload, and failure of a~xiliary power transformer side infeei breaker).

4.

The Generator Trip Test will be performed at lC'.:'~ cf ra"':ed ther:::al po,,..er.

It is expected that a reactor trip and a tur~ine trip, as well as a~y t~rbine overspeed,

~ill be noted an~

recorded.

The tes~ is performed by manually op~ning both ou"':p~~

breakers.

P78 170 51 Ql3.9(b)-2

\\ * ;. r,..

~ ':..: -._: r_

.; i 11 a l '*.* 2 y

:

c all :=. e:

a t *.; r ; ::.. TJ <::

t r i p *

~dditional turbine trip would be in:icnifican~ly differe~t

+ -.,...

r r

L.........:.--

that [Ener~ted d~rin~ a reactor tri? a~d th~t tbe generato~ tri~

as described abcYe.is the more severe transie~t, the co::t[

associated with a turtine trip tect ~o not ~ppear tb justify the benefits to he deriYed fro:: the te[t.

t~rtine triF) test vill te perfcr=ed.

r7G 170 52 Ql3.9(b)-~

. TABLE Ql3. 9.-.l

!~!TI~TiNb EVENT GEN..c?.EAKE?. *... *.

. t 1 ~9. TR IP Generator.. Over load.*.

Gerierator Out of.st~~

• Turbine Trip*

Lo s s o f. Fi e l d. (BC! ck up ).* *

.. *Loss of Field. (Regula.r) *.

Field For.c::ing * *

• Negative Phas~*~equence Turbin~ Trip*

Generator.. Differential-.

Gene~aior N~utr~l Gro~nd- (Regular)

Overall Di ffer.entia.i. (Redular)..

T Generator Neu.tr-al* Gr6unc (Ba*c::kup*l Overa'll Differential (Backup~.*

Auxiliary Power -Tr.ansformer Differential.

(Regular) *.

Aux *. Power. Tr ar.sfo rm.er. Gr.6und* (*Regula.r).

'~:..

Aux. Power. Tr ansiotme r Over load (Ba tkup )_

. *Aux *. Powe-r. 'rr:*an~ ~ o ~*~.e.t*:: G.r.. o*.. Urid. (.Ba_~*~"up*)_

Group* Bus *. Break~r. 2BGGD

.. Group Bus~ Breaker 2EFGD Group Bus. Breaker. 2AEGD Group Bus. Breaker 2AHGD

• .Yes Yes.

Yes Yes..

Yes Yes Yes Yes Yes.

• Yes

• t2 Station Power Transf6rmer Dffferential.** Yes 13 kV B~s~ Section Breaker*Fail~re Yes Table Ql3.9(b)-l

'GEN *. BREJ..KEr. *.

t 9-10 TP.! P Yes Yes.

Yes Yes Ye.s

- Yes

• Yes Yes Yes*.*.

Yes No No

.* T.u":rtE*!NE *.. *

.* TR:P:

-Yes Yes Yes Yes.

Ye.s Yes.

Yes Yes Yes*

Yes No No

T 1.. : :.:r Q l j. 9 -:-1......

. lN!TIATING.EVEN':'

so*o kV *Bus* *. B.rea*ke r 500 kV B.us ~ *Breaker SOO"kV Bus. Breaker f 1-5 Failure..

• 11..;.a.Fa i1 ur;-e t 9-10 Failure*

'500 kV Bus. Breaker. 11.;.5 CT Modu.f.e 5'00 kV.

B.us_~ Breaker 11~8 CT. Mo du.le.

5 00 kV* Bus. Breaker. t 1-9 CT Module f 3 T~. Breaker Failure*

Soo*kv. K*eeney Line Re.lay (Reaula r J

~

5 0.0 *kV *Keeney Line Relay (Ba ck up) 5 00 kV Bu.s.* Br.eake r J 1-9 Failure..

.500 kV Bus.;. *Breaker 12"".'10 Failure, GEN. BR£J..!:£R*

~l-9 TF\\IP.

Yes Yes

• Yes Ground.. Yes Grounc Yes.

Ground Yes Yes No*

.No No No:

500 kV'Bus. Breaker*t9~10 CT~Mo~Ol~ Graurid. N6

..Manual Trip

.M an ~a 1 T.r i p

• Yes No.

GEN. BREAKE::.:

. T:.JR.E !NE J9-10 T~Z:?

T::.: F No No

• • No No.

No Yes No No

' No No*

No No..

No No Ye.s No Yes No Yes Yes-*

Yes.

No Ye*s No.

No No Yes No.

• Turbine trip acts.to trip g~h*rator outp~t breakers thiough a.30 se=on~ time de.lay.:

RWS

gs P78 170 SS/56.

Table Ql3.9(b)-2

I,

1- :.**.:

.. t' *.

I I

~*. ~

"*."c***,*......

. :*(

N02-GE~0

• tl\\*~1N...

.\\.*.

--A~,c..-c~~ A"" o""'

11"(

>,;.... t'.'

l"";rw1:::.* ~.. *.;

3*1 ¢..

2SS-.7/ 24 ii:: v.

. :3'0/4 03 MVA

~0.2 GE~E~TO~

• 25 KV

• 1~00 MVA 0.9 P-f.

Note:

~J. I G~~=.<ATOR.

. 25 KV. l&:lO. MVA 0.9.~t

{*). The.Keeney Lin~ will be :av~ilabie when Unit _.2 is in operati~n..

~*

. The. st'a'f ! con_ci uded tJie ~eg*u'latory Gu1de l.108 I* *periodic

'resting of DicselG~nr:rator Uni.ts as;On~ite. Electric Power Sy.stems>*

et ~uclear'.Po.'lor'.er F*li!nts* is applicable -for the-Sa.lem 2 facility;:**

Since*_ this 9*uide add_rcsses bot.h pre~operatiorial. a*nd pe.riodi~..

testing, *PSELG.needs t*o be._modified-to d,escribe how )'Our planned.

pr~-ope:ratiof!al tests. wi.ll

• con!ora* with" this gu{de of how the;* *

• .will provide_ for eqµiv.a.lent pr:e-6,Perational testing.

The -No. 2 Unit inl.tial pre-ope;-ational test pr~*9~am _is in con~

fo~-ce with the ~gulat.ocy Guid'e *1*108 vith the following ex~

ceptions:.

• Paragraph c2 ~a ( 4) -~ We_ comply.with the s_ection by tripping the "iese1.-output: bre_~k:er at* 21~0 J<W c2()00 hour_ ratin9 > veri!y_i~q that.the volta9e.reg-U1atiori.is*rn.aintairied within the acceptable

--* 1intits. ~d-the ailowabie-bverspeed d~s. i:'o:t 'trip out the diesel.

• .We f~e_l ~-h~s transient is more severe: than the ioad *shedding

-. requirements ident.!-fied in the regulatocy guide.

Paragraph c. 2a (5) _ *..we will perfo~ the test described in this.

.. section, but. due to the sequence cf testing $. t may not be innnedietel:r after >t.he test described.in C: *. 2. a (3).,. The generator sy_~tems will, *however; be at full_ load tempeI:"ature$.

• Paragraph, c.. 2.a(6) - Our plant is net designed to perform the

.test des"cribed in this* s'ection~-

Ci' /3. 9(c) -/

l

Paraqraph c.2.a(9) -

To accomplish this reliability demonstration, we -..,ill increase the frequency-of surveillance testing to acquire the 23 consecutive 6uccessfull valid st.arts per diesel prior to

. t proceeding beyond the Zero Power Physics '!'est Program.

-ro accomplish this,.wc intend to take credit for those diesel atarts accomplished to date or scheduled during Integrated Safe-guards Testing, as -long as the die~els are loaded to a minimum of approximately 25\\ and the run durations-are approximately 30 minutes or more.

All additional starts will comply with the regulatory guide criteria for valid tests.

t? /3. '1 {c/- z_

~-

,i.;. ' -

~

. *. ';. l.-..

The staff* has :con cl oded the. :Reg. Guide. 1. 6 B.'2.~ Initial *start-

. up T.~s.t Pr:osrdr.i to Dcmon.?trate Rcr::ote *Shutdown Capability 'for *.

. \\\\ater.-C:opfed J~utlcar.Power Plants". is applfcable !or. the Salem 2.

facility.. :.J\\l~C requi.res* that your: ap?li¢ation be correc~ecl and.. *.

• iDodi fied to describu*: the test's planned to con.form w_i th the guide

'or £h0\\..' that 'cqui va lent testing ~ill be conducted.' :state your

• rntent tO..coipl~* with our:-requireroent. :

ANSWER*..

The Salein plant. was. designed for remote hot shutdown. froo outside the control.room.

This.. was.. described in Section 7. 7 of the -FSAR,;;

Our capability to 90 to a cola shutdown condition *through the use

-of'-'procedurcs' and tenporacy modi'ticatioris was' descri'.bed ~n the Resporis~ t6-Question*Q9.CS~.

General Design* Criterion 19. -of lb CFR SO Appendix A requ;res a*

design ca pa bi li ty for' remqte he>~:-s,hutdo..;m with 0 potential: '

_cap:ab{1:i ty. *for. sub$~quent *cold shutdown.. thro~gh ~ui table procedures *.

_*A detail procedure wili i,e* vtitten.exp'iain.in9 the actions to be-taken 'to brin'g the pl.ant. from a.* hot. &hut-down to a cold shut-down C<"'"1dition from outside the control room.* This procedure Yill be completed b~; February 19,.1979 ~

• A t_rial-run, not an actual* test ho"Wever, will be performed to

• demOnst.rate -the comm*unication, *coordination.and capabilities of the proc:-cdure con di ti_ons.*:' This trial. run sha.11 be.performed prior to fuel *load.

A fll1lctiof)al outline will be submitted to* the staff *

. which_ will pres~nt t.h'e highlights-of the. detail procedure. ind.icatin9 how cold. shutdown wi'il. achieved* : 'l'his will be transmitted for thc'staffsrcview by Fcbi;-uary 5, 1979.

-** Al..2\\