ML20212J702

Forwards Summary of Vendor Supplied Diesel Generator Ratings & Loading Calculations,Per NRC Request.Calculations Include Evaluation of Dead Load Pickup Capability in Hot & Cold Conditions

ML20212J702
Person / Time
Site:	Sequoyah
Issue date:	02/27/1987
From:	Gridley R TENNESSEE VALLEY AUTHORITY
To:	Youngblood B NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
NUDOCS 8703090105
Download: ML20212J702 (22)

Text

{{#Wiki_filter:. _____ _ ----. _ _ s.r - TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 SN 157B Lookout Place FEB 271987 U.S. Nuclear Regulatory Comaission Attn: Document Control Desk ~ Office of Nuclear Reactor Regulation Washington, D.C. 20555 J Attention: Mr. B. J. Youngblood In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328 SEQUOYAH NUCLEAR PLANT - ELECTRICAL CALCULATIONS - DIESEL GENERATOR RATINGS In response to a verbal request from NRC, TVA is providing additional information on the engine and generator ratings for the Sequoyah diesel generator system. provides a summary of the vendor supplied information for the generators and engines. provides a summary of the diesel loading calculations. These calculations include the evaluation of dead load pickup capability in the hot and cold conditions. Very truly yours, t l TENNESSEE VALLEY AUTHORITY R. Gridley, rector l Nuclear Safe y and Licensing Enclosures cc (Enclosures) U.S. Nuclear Regulatory Comission Region II Attn: Dr. J. Nelson Grace, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 l Mr. J. J. Holonich Sequoyah Project Manager U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue Bethesda, Maryland 20814 p ^ ! Mr. G. G. Zech, Director TVA Projects g U.S. Nuclear ReSulatory Commission g Region II jh0%j 101 Marietta Street, NW, suite 2900 j w pac Atlanta, Georgia 30323 Sequoyah Resident Inspector k Sequoyah Nuclear Plant I 2600Ibo$sy,rryRoad Fe bg S ddy a Tennessee 37379 WEL f An Equal Opportunity Employer

9 6 ENCLOSURE 1 SEQUOYAH NUCLEAR PLANT

SUMMARY

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d M 4 4'E N C [ W3 git.N!!IfAl Dl%ci!ll'T 1f W f W I!Ot iil 9tCYr The power unj t is a tandom packupe cornprislug of ido (2) RMI) ungJnca drivilip one (1) Electric Products pencrator. 10-045H4 Sec PSI) tirawing D370F02OO1..

• IThe rating of the power unit at 90 F ENGINE ftATING (2):

t_ Continuous: 6140 Bill' 4385 KW _ 2000 liour/Yrt 6040 BilP - 4750 KW 200 Hour /Yr 6840 DllP - 4885 KW 4 Hour /Yrt 6970 DHP - 4978 KW I:s Hour / Yrs 70401311P - 5000 KW GENRRATnft ItAT1NG: 475t>HW - 2f310 hour continuous rating Soon HW - b hour 5225 KW - ifts overload, 2 hours in any 24 hours. 0.6 P.F., 0900 Volts, 3 Phase, 00 liertz, 900 Iti'M. Tbc power unit is furnished completc with: A) Accobsory Rack 1) Expansion Tank with sight glass 2) Lube Oil Cooler 3) Engine Terminal Dox i 4) Main Lube Oil Filter 5) Auxiliary Turbo Lube Oil Filter 6) Proheater i' 7) Engine Water Temp Control Valvo i B) Alarm Temp & Pressure Contactnakors B) Fuel tanks in engino skid. l t . f",. C) Four air tanks par power phckapo moue ced on skid by means of I caddic support. lT. D) Two beat exchangers per power package moun. I:. ted on the skid.

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E) Switchgoar and Co$ trol Assembly consisting of: l', h( 1) Engine Control Panel r:. 2) Generator Exciter CubicleEngino Gauge Panoi mounted on Auxiliary E 3) I. = '

4) Concrator Neutral Cubicle F)

Motor driven air conprossors. g a C, .?;. 1,.-u !.c- .8

, / 7' ome n G ear L d5 enal sio SQW CIS 3 casAtons or stectneCAl, ElW2-D5 tin RP M E871 062I Ist POWS 4 spPPLY sysTanas ![ P.OWER S.YS..T.E.M.S We she W/ POST hec 8 508 telt EE$r".n*s*eb9.N.n June 6,*1979 l ] Tennessee Valley Authority i Division of Purchasing Post Office Box 2000 Chattanooga, To.nnessee 37401 ATTENTION: Mr. [. Marcel Anderson Purchasing Agent l ^' i i

REFERENCE:

Contract 7tC61-92652 { Sequoyah Nuclear Plant Diesel Engine Driven Emergency Generator Unit Power Systems Proposal No. 79130 Sentlemen: In reply to your letter of April 25, 1979, requesting ~ additional generator capacity from the existing units at the Sequoyah Nuclear Plant, Power Systems advises the followings i i l} The existing generators rated 4000 KW.8 P.F at the * .2000 hour rating are 1*lmited to tnatriting a,t'th'ls' tim,e i j ' as 4he results of the heat run Indic'ates that increasing the rating wIll reduce the 40 year life' qual'lfication.- i it has been suggested by Electric Products (manu'facturer i of the generators) that a field test be conducted at l rated load and temperature measureme'nts be made to fled out wha.t the generator characteristic,s arelunder actual 3 conditions. This would serve two purposess, i a) To find out if the unit could be rersted and if so, k what the degradatlon, if any, would be. 4 i b) To aid in sizing of forced cooling' equipment if T.V.A. chose that solution and also aid in determining what the unit could be rarated to. The above tests should be conducted in the presence of representatives from Electric Products and Power Systems. j 1 j 6l0A.C6

j [N. Qidal Generntor l] kaahSIS UNIN sqa cls so- --s - June 6, 1979 ( Mr. J. Mergel Anderson Tennessee Valley Authority Page 2,- i s" l

2) {

gee.' existing engines _.for this application are capabTe-att j 4400 kW sontinuout,(4750 KW - 2000 Hr./Yr. et O'F comaustion air. F Upgrading the units m,rature,, see dorating curve,or+glevated co'mbustion..alf, attached. require a changeout of the generator or rerate as per a y -- above, exciter, cooling water heat exchanger possible l generator control equipment and possible rep,lacement of generator anchor bolts aJ a result of a larger generator. The 2000 hour rating of 4750 KK (.8 P.F.) will be available In approximately 3 minutes after start signa,1. Since this falls short of the requested additional 1500 MW per unit, we felt that this option should be discussed with T.V.A. prior to proceedi,ng. t For an additional unit identical to the Watts Bar units furnished on Contract 74C63-83080, follows: Power Systems is pleased to quote as l) $1,321,959.00 plus 8. L.S. f rom June 1979. , (, , 2) Progress payment to apply. f 3) Dellvery approximately _12 months A.R.0. { 4) Alternates Cost plus fixed fee contract to be negotiated. 1 The above pricing reflects considerable escalation over the original diesel generators which you purchased from us for i the Watts Bar Nuclear Plant in 1974. to such a degree, we conducted an InternalIn fact, escalation soared investigation into the reasons prices had increased. i We feel sure you will recall the years 1974 and 1975 as years when prices eseglated b4 yond anythin We found, through our Investigation,g Industry had seen before. that the Electro-Motive diesel has increased in price by 134% and similarly the generator, by 1795 since your early projec,t. These, prices and the increase in all auxillaries, have caused this rather alarming escalation. We felt you deserved an explanation of l our price increases. This unit will be designed and and rated the same as the Watts Bar units with respect to seismic, amblent conditions, loading, specification, code and standards (latest edition), etc. k e 2/9 --,,--,,n. -,,,--.-,,-,_----,-_-_-_--.,_,-n-~,-n_ -n

m , s," I.f' .. _ _ _.. ~.. 54N CI7 powansystausomssox ra2-bs luRP [ June 6, 1979 er (- Mr. J. Mercel Anderson ' Tennessee Valley Authority Page 3 NJLTl[ It is our understanding that should T.V.A. elect to procure this unit, the codes and standards applicable would be the same as } now required on the Yellow Creek project. Please be advised that this will result In mately eighteen (18)a higher price and a lead time of approx months. 1974 and A.S.M.E. Section lli Class 31.E.E.E. 323-similar but not identical.complian'ce will result in the unit b i We are now in will be advised as soen as pricing isthe process available. t order for Watts 8ar will be manufactured to the o codes and standards. Therefore substitute in an effort to acce,erate delivery.it may not be a suitable l i Should the lead time of this unit exceed your requirements (* . standard commercial units until permanent Installati n be made. i In the event T.V.A. decides t$ replace the Sequoyah diesels within the same area that exists utilizing many of components. Enclosed is a M.T.U. Engine 8rochure for your review. i 1 Very truly yours, 1 POWER SYSTEMS A MORRISON-XNUDSEN DIVISION i Milton A. Sharpe ) Sales. Engineer NAStays

Attachment:

E4 Derating Chart

Enclosures:

M.T.U. - 1863 ZMW 05040 cc: Mr. Tom Hogan, T.V.A., Knoxville d I

100 - i,i S s m . 4 z Y y - A g EMD G45El AND E4 i i N ENGINE ItATING AT ELEVATED TEMPERATURE fF) y {, 'j

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r ll [ i J i j I i STANDARD PRACTICES for LOW and MEDIUM SPEED l STATIONARY DIESEL and CAS ( ENGINES f 1 A Sirth Edition f r> G I (% 1 n ~ Cotyro';phe 1972 l DIESEL ENGIXE MANt;FACTURERS ASSOCIATION l 122 East GIStreet l New %wk, N. Y.10017 l'avcs $1 LOD Dnenegie $9.00 Foreign

- 3, j q ~ i ig STAND.iRD PFACTICES ENGINE RATINGS stND PERFORMANCE 29 Ikbre restricthe ILcits ca toep, piston sp d. etc., are nude a Ratings. at E.levated Te.mperatures--Due t3.he re&ction I 'h* SP'"I'C "' Chi "I *."'*h.mereased temperature. cm me rat-part of perdase sycif. cations. tLe meet far sea-h hansts shouki a te c2nfu:ty cc:islerttL Itcstri:ticas in! Lit the engine nunufacturer

• * d"*'t w hen mtale a.ir exceeds 90 E. Engines equipped t
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*"b in has endeascr to inryme er.gine pric.rnunre. This is particula:If true because engiste unaufacturers c$ct engines with sulT4ieridy PC'E.ig upm tlic engme er,mg.nient. % Lir M W &c mM' A ecasenathe ratings to yrusit delhery of an output 10 per ceitt in ratuig 4 naturath sped a:W imiperclawed enn in excess of fidl 141 nting at rated syed with safe ognting tc:2;entares far any twu I.ours. Lut rmt to exceed a total of two g g. .q q laa2rs cist of any 24 conseusthe ta:ars 4 ogieration. ioo o I hj Q l l J E. ...fi.ij ~ i.' p!I [.8 o , ll y li i-1 i o i g g g Ratiags at H'cher Altitudes-Masmfacturers' sea levet rat- . ;.i, f* /! Pl l}I.! [hj d E

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G F wat harometric gessure v4 mt less than 2325 inches of t; I i .Q fCJ3b f.f.i8)iii sH j js-Q{ 3 C.gl] . f-4tjj' 8 ntercury. Mm2% 1s a }AlrEIy practkCsI pf Os 8s3Gn 14 tnat e 5: ImaccC%2rf M" bh.. "fhi .n :,H:!.g.; j pIr'.: 2-3.$ij!iiE.l r=rll! E

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.I l lii' 4 .fk () ii. l l 1 !!Hid,. jfj!.. Ekh $ iiE)'!* $ E M E N: M f]jfl5 i $.k 5 E Effects of Supercharging and Inlet Air Cooling on De-5 flI[k j)EIii[IE!!! Nil fit k!j $ ) l 1! ' Eiui M 2.*:'5.3I!. rating--.The use of superchargers and turhochargers as wcti as ? p !5 P uttake air cocling equipment aukes it possible to recoser varymg l' Mi !i !:jEidE'52!!$$sii]!fi" rH amoimts of the loss in te ale horsepower which oilxrwise wouhl h]; j'l(d} U.5 h53f3S l'lh.lN: "; Qt:2: Fer:dii E

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result in opera:ioi at a! ::udes atme 1500 feet or atmosgJieric I [ir i:; i-if .E! j'@:--];n E:-gy;i y tensperatuses atme 90 F. Itccause of the nuny variables, any i -.l l:..pp Ei! 7 ** i Y ;iis p hi Il fikp-i: mg -% N,} !!@{r 1,, Eri r ;t!i: ;-i;ddii formula for making derating calen12tions ender these conditions U !N; g! !j E.. q; i 81 !5.li. in jiE becomes so invoiced as to make its use impr:cticable. It is for i .; A ;g. o adfs t UT.i:. ! 'i![

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j55 S t fi 'il:' :~id!If. this reason that the cunes in Figs.13 and 14 hne been confined U I;iii;.On!E: 11 jj"- gg k tii ! =- 3 na! I:i rl to naturally agirated sad nonsuperclwged engines having io r. - l'iii; iEN;N=E:i ni hr.;cl!- 9;qi: ntl! iia!!!ir:..!4 ))jF hlI'I![ intal e air coubsig equipment. Engine maisulacturcrs,witti full 9 %'.o b b b k.[!F. t.2 knowledge of operating cos:ditsons will rate their engines m accord-f i ance wnh the ceruptnsatmg eqinpment farmsheJ. 'to offat altitude o rooo .ooo sono sooo => coo veoo e.ooo isono effect, engine manufxts.rers are tesieg sarious means of super-me naviruct asave sta trert un errr C Imycr shouhl, male cutain that {woper aHowa,nce Attitude Rat,ngs for Naturstly Aspunted and Nonsapenharged l CI#E*E: F,g.13. i i es nude in the net eng.cc rat:ng for any add,tional power required Engames Espreued im Per Cent of Their Sea Lesel statsmgs. - i J

4 i i \\;3 A SI-tr j nu swxneu ) ~ :.,=:" lY IEEE Standard Criteria for Diesel-Generator Units Applied as l M Standby Power Supplies for l Nuclear Power Generating Stations l iF t f 1 t L

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) i Waum E i razz V th4 at1.lsn4 ltEE STANDARD CPJTIRIA Ft)R DIE 8Et,CENERATUR L'NTTS APPLJED AS i E Purpose can maintain in the e,rviec,nvirenment for : h in any 24 h pertrut without exceedms the rasn. -7 The purpoet of this standard la to provide the ufseturer e dee'sm hrnits and without nduem2 j principal design critena, the design features, the mamtena nce mterval cata bha Fed for t hv cen. j testing and qualification requirements for the tmum reting. d individual dweel generator units which enable J' them to meet their functional "9uirements as a " * ' ' " ' ' 8 see of the a>==i.ceiwrvier vnit si iu cononma renas g part of the standby power supply under the con. t m il dations produced by tho design basis eventa cata. 3.8 redundant equipment or system. An 8 loged in the Plant Safety Analysis equipment or system that duplicates the emen. F tial function of another equipment or systsm to y the extent that either may perform the requircd

3. Definitions function regardless of the state of operation er r

l fadure of the other. 3.1 acceptable. Demonstrated to be adequate by the safety analysis of the plant. 3.9 service environment. The aggreret, uf t. conditione surrounding the diesel.generater 3.2 dealgn beels events. Postulated eventa unit in its 'neloaure, while n,rving the demgn used in the design to estabhsh the performane, load dunng normal, accident. and post serident i requirements of the structures and systema. operation. i t i 3.3 design load. That combination of eintric 3.10 standby power supply. The power aup. l loads, having the rnest unre power demand lP y that is winted to furnish eintne energy charactenstic, which is provided with eintric when the preferred power supply is not avail. energy from a diesel generator unit for the op. able. M l erstion of engineered safety features and other y systems required during and following shut. 3.11 start diew! signal. Nt input sirncl to i down of the reactor, the diesel.gennator unit start logic which initi. stes a dieul. generator unit start sequence. 3.4 diesel. generator unit. An independent source of standby electncal power that consist, 3.12 surveillance. The determination of the l of dieul fueled internal combustion enone (or state or condition of a system or subsystem. enpnes) coupled directly to an electrical genera. torta), the annociated mechanical and electrical j auxiliary systems and the control, protMtion. and surveillance systems.

4. References 3.8 load profue. The magnitude and duration (1) ANSI C50101977, American National I

of loads apphed in a preacnbed time sequence, Standard Gennel Requirementa for Synchro. including the transient and steady state charac. nous Machinu ' tenstica of the individual loads. {2] ANS! N1951976. American National l 3.8 qualified diesel. generator unit. A du. Standard Fuel Oil Systems for Standby Diesel. j pl gennator unit that meets the quebriestion C""* k"' { requirements of this standard (3) ANSL1EEE Std 3441975 (R 19806 IEEE j Rnommended Practices for Seismic Qualifica. 3.7 rating of dient generator unit tion of Class IE Equipment for Nuclear Power 3.7.1 continuoua rating. The clutne power Generating Stations. I output ca abihty thos the dwnel generator unit r ,gggg gg,g,gg7g, g,gg, g,4 can maintain in ilm persar ensaronment for Gennawn [ 6760 h of operntmn pe r e nmmont year with only [ acheduled outman for minntenance 5 ,,,g g g l 3 7.2 short ume rattnr. The elemir ener ,,,m ,,,,, g,,,, g,,,, g,,,,, g on p,,,,, j output capabilits that the dwel generator unit .er. bn t ers. Ny 60010 l { 5 l J?V1 s,

ENCLOSURE 2 SE,QUOYAH NUCLEAR PLANT DIESEL GENERATOR CALCULATIONS SQN-83-002 Pagea 103a through 105 . I. < 1 1 e e 8 e l o I l s

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6 oW 803S-39943 00'2. From M-X Re porF No. 6957 g, RI ,Mu 31,1986 (4Asedeno.) Can the engine handle total cyclic loads, starting simultaneously, at time greater than 21 minutes after the start signal, consisting of 387 HP plus the random load of 40.96 HP and 9 KW? 1. The engine will be in its hot condition at T>21 minutes. ~ 0 0 The nominal rating at 90 F is 3,070 x 2 = 6140; at 97 F, the rating is 6,140 x.982 (correction for higher ambient) = 6,029 BHP. The KW equivalent = 6,029 x.746 x.96 (gen. eff) = 4,318 KW cont. 110% KW = 4,750 KW The 5 hour rating (max) is 3,520 x 2 = 7,040 BHP; at 97 F = 7.040 x .982 = 6,913 BHP. gg qqq KW = 6,913 x.746 x.96 =,,A l KW it/isIE6 2. 387 HP - Assume 6 x HP inrush Start P.F. = 0.4 Start KVA = 387 HP x 6 = 2,322 KVA 2322 KVA x.4 = 929 KVAR IW Run = 387 x.746 x.1/9 = 321 KW i /,q 'I 1 [ 3. The random load is 167 KW start and 45 KW run. 4.. (a) Total run load in step = 321 + 45 366 KW Total start load in step = 929 +167 1096 KW 5. Assume full sequenced loads on system. (a) Loss of Off-Site Power 3562 KW, 1686 KVAR, 3949 KVA 3562 KW - 366 KW 71W + g KW 4292 KW when motors start - OK (b) Phase A 3787 KW,1990 KVAR, 4278 KVA 3787 KW - 366 l 74'lT KW O +g 4517 KW when motors start - OK ~ 3/5

r sQN E3 QQ3 TENN ESSEE VALLEY AUTHORITY KNOXVILt.E. TENNESSEE 37902 ( W7 C126, 400 Wost summit Hill Drive B44 '86 0 5 0 2 60I Mar s 1986 Norrison-Knudsen Company Power Systems Division Post Office Box 1928 Rocky Mount, North Carolina 27802-1928 Attention: Mr. Ed Martin Gentlemen: SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 STANDBY DIESEL GENERATORS CONTRACT 71C61-92652 - N2M-52 M-K/PSD IWO 6957 LETTER NO. 42G052 REVISED LOAD SEQUENCE ANALYSIS

References:

1. Your letter S/N 6957C-0-0022 datod April 3, 1986 (B44 860409 501) 2. Telecon between Morrison-Knudsen/ Power Systems Division (M-K/PSD)(Harry Faltor, Ed Martin) and TVA (Tom Hogan. Bill Kistler, Pete Bowman, Randall McIntosh) on April 17, 1986 We acknowledge receipt of your roferenced letter, and with the understandings summarized below, we are retaining all copics of the following reports marked (A), " Approved": T' Document No. Rev. Title NEI-PEPI T-1016 0 Transient Voltage Responso 6957R 1 Engine Capability Report .a To summarize our undorstandings per reference 2: 1. Since the 25-second load was evaluated at full horsepower of 540 with a 5-second acceleration time, an incrosso in acceleration time to 6 or 7 seconds will have no otract. i.e., 5-nocond acceleration time at maximum horsepower is the worst case. ( SENT Mg os was Eg MASTER FlLE u coun omnuma, e,,,,oy, 9/r

SQN E3 002 N 4of 4 g ( 2 Morrison-Knudsen Company 4 May 5, 1986 ~ 2. Due to roundup error for calculation, running KW has been f lower. Using the formula on last page of section 2b, ound to be maximum KW which can be applied at the 30-second step is:the real or ac 4482 XW -3099 KW Actual running load prior to 30-second load + 41 XV 2-33 Hp valves that turn off at T - 6 seconds -1100 KV 30-second load starting 324 XV TOTAL RANDOM LOAD that can be added at T - 30 Also, for any other evaluation up to 3 minutes, if running pl does not exceed 4482 KW, the diesels will pass acceptable fre us starting load quency recovery. 3. The engine is considered hot after 3 minut'es. 4. 4750 KW is the 100 percent rating of the diesel engine only. ( 5. The accuracy of engine evaluation is 15 percent if input inf accurate. ormation is 6. TVA specification 1166, service condition a,The acceptanc s specified in Any questions or comments on this matter should be directed t at (615) 632-7108. o V. R. Kistler Very truly yours, TENNESSEE VALLEY AUTHORITY Original Signed B7 o T.A. Hof an gg;{C.A.Chandley,ChiefMechanicalEn61neer c.vn l 5/5 ,.}}