ML20236D229
| ML20236D229 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 03/15/1989 |
| From: | OMAHA PUBLIC POWER DISTRICT |
| To: | |
| Shared Package | |
| ML20236D071 | List: |
| References | |
| FC05021, FC05021-R00, FC5021, FC5021-R, NUDOCS 8903230012 | |
| Download: ML20236D229 (80) | |
Text
{{#Wiki_filter:. _ f I 1? i .i I a ATTACHMENT 1 CC River Water vs. Raw Water Calculation i i j 1 pA A potx esutsvas:7 _ _ . _ _ _ _ _ _ _ _ _ . _ _ _ _ _ #DL- '
-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -----------J
t, CALCULATION COVER SHEET GSE-A-ll-1
- SEE INSTRUCTIONS ON REVERSE SIDE M # // 9 8 3 / CALCULATION IDENTIFICATION PAGEgOg
' CURRENT @ ENGRG STUDY MR NO- DEPARTMENT (S) -
CALC.NO. O EEAR NO. . OA CATEGORY (V) wswe4 ew. k y .5'f6fl/ 65-/~d*2f-// 40 4 ut4c1EAA EN4 - b O lM TED COE STATION, FACILITY / AREA, SYSTEM NO., COMPONENT TAG NO. O NON COE FG.5 u M LT' I , RAvJ WAWr. PUMP UPEAATtod AC-10 A - D - CONTRACTOR / VENDOR CALCULATION TITLE (Indicative of the Purpose) LIM itt ucq RWER WATTR TEMeGCATuRGS VS . RMAJ W A'TOf- CALCU TION AND OR WW W
- jvp,7g. c 13g 04H605TtOu ENfo AlGee,wg
- APPROVALS SIGNATURE & DATE . REV. NO. CONRR M ON SUPERSEDES
- CALC. NO.
REONED (V) INDEPENDENT ^ PREPARER (S) / DATE(S) CHECKER (S) / DATE(S) OR REV. NO. YES NO REVIEWER (S)/ DATE(S) N ce. i2M lee ce (2/iq jge mehrt___.. o #/// g uT-88 -o938 4T-es-o:Isa 1/nWe9 (teme ostrec) DISTRIBUTION
- l l COPY l l COPY SENT GROUP NAME & LOCATION SENT GROUP NAME & LOCATION I I (v) l I (v) l I I I
, I l l l ! I I l l I I I I I I I I . I I I I s I I I I I l l 1 h ! f I I Rev 5/88
i GSE-B-10-F 1 of 2 3 MDR ENGINEERING ANALYSIS & STUDY CHECKLIST
Title:
CALCdLATlDAls bMDIM6 "THG ba rrfMG3 6vec.7Eup.vs.b FAW WATEA f:LON Document: QNf%sTind EM6tMEEOrJG) CALC - MT-M-Mif Rev. : O YES [L0 [LA
- 1. Does the calculation clearly identify the purpose?
X Comments-
- 2. Are CQE and Limited CQE components properly identified?
Comments: E CDM9MGM AG CM X ___
- 3. Are the requirements of GSE B-9 met?
Comments: do CHEcE9 Ice >4 WAt ceWLEte0 stacE 1HG X _ treeDog. 9RowoGo tw Houss cuecrawn e cottro W TH E c W E R. N
- 4. Is the material presented sufficiently detailed as to objective, method, assumptions, input, references and units?
Comments: kEFecsJce_s weae Aooe<a LATA sv x _ _tr0DGf,5% dE0 AF-TkR TGLGCO3 Tb CE I
- 5. Was the appropriate method used in the analysis?
Comments: X __
- 6. Were inputs correctly selected?
Comments: X _ _
- 7. Was all design input properly documented?
Comments: h _
- 8. Were all " engineering judgements" properly documented and acceptable?
Comments: Flow STE 09 RW Poup is F4Du (_uR-@ 'A lfDUEle doon DEGL,AJ 99JA/CA plt s 8-10.19 11/87 eme mm = - , . _ _ - - - -- - .__ . . .. _ ...,__.,._ . _
;; , J
.GSE-B-10-F 2 of 2 y
MDR ENGINEERING' ANALYSIS & STUDY CHECKLIST
Title:
'[Arn.Afe hALOW6 We(lum 46 2t@L EM/ VS. b l Document: Rev.: @
, YES ILO .- U/A
- 9. Have adjustment factors, uncertainties, and empirical-correlations used been correctly applied?
Comments: X __
- 10. Are the results reasonable when compared to the inputs?
Comments: X __
- 11. Is the conclusion clearly stated and not ambiguous? '
Comments: %
- 12. Are calculations involving Technical Specification ,
values and associated margins of safety clearly l
; identified?
"- Comments: 1. .__ i i
- 13. Do all calculations / computer runs meet the requirements.of B-9 and Form GSE-B-11-1G7' Comments: TsHOR.geora W 6 % 11 - 1 01ts dor __._ .X_
MpocAda M THis is 41 EA $ Wr A Mooimcwn 04 q s Reviewer: Reviewer: kMlb Date: Date: I-1961 Reviewer: Date: Reviewer: Date: Reviewer: Date: Reviewer: Date: Reviewer: Date: Reviewer: Date: Reviewer: Date: Reviewer: Date: l B-10.20 11/87 i l' w.~,.__.__.,_n,,_.~_ ___ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
u COMBUSTION ENGINEERING December 19, 1988 NT-88-0938 l Mr. William Weber Supervisor, Reactor Performance Analysis Omaha Public Power District ' Jones Street Power Station 4th & Marcey Streets Omaha, NE 68102
Subject:
Calculations Regarding the Limiting River Temperature vs. Raw Water Flow $
Enclosures:
(1) Governing Equations and their Solutions (2) Derivation of UA Factors for the Containment Fan Coolers and for the Component Cooling Water Heat Exchangers (3) Estimated Flow from 1 Raw Water Pump (4) Detailed Numerical Evaluations via the Solutions of Enclosure (1) ! (5) Curves for Limiting River Temperature vs Raw Water Flow for 3 CCWHXs and 2 CCWHXs. 1
Reference:
(A) FCS Letter FC-2604-88, dated December 8, 1988 (B) Containment Pressure Response for Fort Calhoun Station, Final Report, December 1988.
Dear Bill:
The purposes of this letter and its enclosures are to summarize and I document the calculations recently performed by Dick Whipple and myself regarding the required raw water flow vs. river temperature for FCS following a DBA LOCA. These results, in turn, will be used by 0 PPD to resolve the currently existing discrepancy between the USAR and the { plant Technical Specifications regarding the number of raw water (RW) pumps required to satisfactorily remove heat from the containment (indirectly, via the containment fan coolers (CFC's), the component cooling water (CCW), and the component cooling water heat exchangers ] WLWHXs)). The USAR states that two RW pumps are needed, whereas the l l Power Systems 1000 Prospect Hill Road (203) 688 1911 Combustion Engineenng, Inc. Post Othee Box 500 Telex: 99297 Windsor. Connecticut 06095 0500
NT-88-0938 December 19, 1988 i Technical Specifications allow only one to be available (if one is taken out'of service and if two are not available via a power failure). Neither statement.provides a technical basis, and it follows that either. can be correct depending on the assumed river temperature and the other parameters' of the problem. Reference (A) authorized Combustion
, ' Engineering to quantify the issues involved.
As shown in Enclosures (1) through (4), the approach taken was to use existing data (largely from the USAR, supplemented by manufacturer's equipment specifications) in conjunction with a straightforward solution of the governing energy equations to predict the system temperatures following a LOCA, where the containment is at its design temperature of 288'F. Fortuitously, as shown in Enclosure (1), the energy equations can be solved in closed form, which greatly simplifies the numerical parametrics to be performed. The algebraic solutions for the cooled CCW temperature (TCCWC), the hot CCW temperature (TCCWH), the heat rate (q), and the heated raw' water temperature (TRWH) are all provided. Enclosure (2) shows the bases via manufacturer's specification data for the {j performance factors (i.e. the UA v.alues) for both the FC's and the , CCWHX's. Enclosure (3) provides the details of the estimated (6600 GPM) flow from 1 RW pump; plant data to support this value was not available
)
as of this date. Detailed evaluations of the various temperatures are shown in Enclosure (4), where the following 3 constraints were used to determine the most limiting river water temperature (TR ) (1) T CCWC 5120*F; (2) q 2280x10 BTV/hr; and (3), TRWH s 210*F. Enclosure (5) provides curves of the limiting values of TRvs. RW flow l for 3 CCWHX's and 2CCWHX's in operation. All calculations and curves I presented assume a CCW flow of 7500 GPM (for 2 pumps) and a nominal CFC capacity of 280 x 10 BTU /hr. Parametrics in terms of other CCW flows (e.g., 3 pumps) or other CFC capacities (e.g., 420 x 10 BTU /hr) were 1 1 not performed in vicw cf assumed operator actions (in the E0Ps) to I secure some CCW flow and some CFCs such that the plant configuration is l consistent with the data used in the calculations. Either more CFC ) ) l
)
NT-88-0938 December 19, 1988
-l l
l capacity or more CCW flow will adversely affect the results of our 1 calculations. Russ Kirkland tells me that the E0Ps currently do not secure CFC's, but that they do secure one CCW pump if all three a're operating. , It is my understanding that OPPD will use-this information in a revised Technical Specification using 6000 GPM as a minimum RW flow from 1 pump and 60'F as a maximum river' water temperature to allow plant operation with 1 RW pump out of service indefinitely under these conditions. This data is consistent with the results of our calculations and is felt to provide sufficient margin relative to the available data base information provided. Per my conversations with you, the calculations have not been formally Q/A'd but have been both heavily and consistently scrutinized by myself and Dick Whipple to insure the accuracy of the . results. No allowances were made for flow rate tolerances or fluid density effects on flow rate measurements in the calculations. Also, as j we discussed, all of the calculations are limited by the TCCWC <120*F constraint. Relaxing this constraint would allow higher river temperatures, possibly approaching 85'F for 1 RW pump flow; this has not been pursued herein since the 120*F value is deeply imbedded in the FCS data base, including the recent DBA LOCA and MSLB calculations via Reference (B). The_ heat removal (q) rates calculated are all in excess i of 280 x 10 BTV/hr, even though T CCWC is limited to 120'F and the containment temperature is 288'F per the equipment specifications. This ) excess heat removal rate is largely due to the CCW flow used (7500 GPM, total, or 3750 GPM per 140 x 10 BTV/hr FC) being larger than the cooling coil specification value of 2340 GPM per CFC of that capacity. As always, we appreciate the opportunity to have supported OPPD. Please tell Jim Kecy that the total cost to date is approaching, but has not yet reached, $15,000. If there are no furthcr iterations, I can provide you with a final cost later this week. Please contact either Dick or i
=..
NT-88-0938 - December 19, 1988 myself if there are any further. questions.or comments. Very truly yours,. COMBUSTION ENGINEERING,.INC ,/ k* ,i William G. Dove, Jr Supervisor,' Operations Analysis WGD:dhs
Enclosures:
cc: G.C. Bischoff, C-E w/o enclosures W.E. Burchill, C-E w/o enclosures C.'Boughter, C-E R. Caruso, C-E w/o enclosures R. Kirkland,'C-E J. Kecy, OPPD l l
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, i .,- OMAHA PUEUC POWEFI DISTRICT Fort Calhoun Nuclear Station Box 399 Hwy. 75 Fort Calhoun, NL. 68023 FacsimileNumber(402)533-6747 TELECOMMt!NICATION 10: , __
b, f W E L E (2 FROM; (FCS) /d c/NTY* I6-MES5 AGE: L NrmAhe UE DO C ur:r E o 1l sum.4e - p e em lint. paw W4Tef- Flow ANAL 1os hcs +r-n-osse _ _ _ _ _ - -_-- - --_ - - ene b1 "h _
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MAINTENANCE ORDER NO. 42 882946 . PRIQWITY: 3 PLNT COND: . l~ SYSTTM AC-RN IT'M NO: RW-ll7 EQ LOCATION: 4ECC65104 0998 ROOM'INTK-ITEM NAME: CHECK VALVE ON DISCE' PUMP AC-10C REQUESTED SY: STEVE SWEARNGIN DATE 07/08/88 TIME:0706 SPECIFIC SYMPTOMS
& PROBLEMS: CBECK VALVE RW-ll7 AND RN-ll5 EAVE ,
e SHOWN LEAKAGE ON ST-ISI-RW-1. TESTING NEEDS TO BE PERFORMED TO p+g* 9
~ I
.MORE DATA ON LEAKAGE FOR ENGINEERING M/ JA O '
OPS SUPV:JCA EVALUATION.- PRC PROC: * 'DET WI: Y
-TECHNICAL REVIEW QC Y QA Y RWP: N
*NO PRC APPROVED PROCEDURE REQUIRED FOR DATA TAKING ONLY UNLESS SYSTEM TECH REV LINEUPS ARE.NOT ALLOWED BY EXISTING j BY: OI'S, TLP CODE:ASME III-3-71 CLASSi3 CQE Y PROC RESP:SFS QC REQUIREMENTS: OBSER QC REQ' IN DET-WI IF REQUIRED QC SIGN:RPS MET
.............._--....--_.---................-.....................y.--
QA REQUIREMENTS: DOCUMENT RESULTS OF TESTING AND DATA TAKING WITH THIS MO. QA RE PS QA SIGN:LHB MET:= MNT SUPV:JAD LEAD CRAFT IC CRAFT GROUPS: GM PE EM MM I&C .QC CONT FM TOTAL MEN: 0 0 0 0 2 0 0 0 DURATION DURATION: .0 .0 .0 .0 4.0 .0 .0 ~~'~6 0 EEQ FDUE FIRE TANK ENTRY ITEM: N FSI: N PERM: N WATCH: N PERMIT: N WORK INSTRUCTIONS: COMPLETE BLOW-DOWN OF SENSING LINES
'TO THE TRANSMITTERS AND PRESSURE GAUGES.
FIELD SUPV:JAD ACCT 1: 530.42 ACCT 2: ASSIGNED TO:ED ZBYLUT SCH START:07/08/88 SCH COMPLETE: OPERABILITY OF REDUNDANT EQUIP: f b a+- LAST RUN: MM APPLICABLE TECH SPECS: 1y i OUTAGE ESTABL BY: pp TAG NO. ,w:, RELEASED TO: 3W ,~. Ce Le l RELEASED BY SS: ,C RELEASE DATE-TIME: 9.A# fgy i HEALTH PHYSICS: . RWP No. O ADDL ACT RQRD: l WORK ACCOMPLISHED: h-u errs <sro -r2.cz e/ i f/Mf PM: Vf f PARTS & MATLS QNTY UNITS DESCRIPTION PO/ REQUEST STOCK NO. '
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i".DNP D A".'E - TIME RE TO S 1 Y SS DATE - TIME
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CRAFT SUPV: / ..._. y -MAINT SUPV: g QA: N QC: PM CHK: _ 7/ v A. - L
- . -____- P6G SO.bC-63
MO-082946 1.0 PURPOSE 1.1 THE PURPOSE OF THIS PROCEDURE IS TO CONDUCT TESTING OF-
.lW PUMP DISCHARGE CIIECK VALVES, RW-11$ AND RW-117 TO ODTAIN DATA FOR. ENGINEERING EVALUATION.
2.0 INITIAL CONDITIONS NOTE: LIMITING CONDITIONS OF TECE SPEC. 2.4 WILL BE IN EFFECT. WHENEVER THE DISCHARGE BLOCK VALVE (S) ARE OPEN. ; 2.1 RAW WATER SYSTEM IS IN SERVICE PER OI-RW-1, NORMAL OPERATION. h/-9F/ 2.2 NOTIFY SHIFT SUPERVISOR PRIOR TO STARTING TESTING. #-fJP ] 2.3 BLOWDOWN SENSING LINES TO FT-2890, FT-2891, AND ALL FOUR DISCEARGE PRESSURE GAUGES PRIOR TO STARTING TEST. A
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/ 7'7-$ 7 2.4 PLACE 3 COMPONENT COOLING WATER HEAT EXCHANGERS IN SERVICE.
P 3.0 PROCEDURE NOTE: TEST MAY BE SECURED AT ANY TIME PER LSO OR SS DIRECTION IF REQUIRED TO MAINTAIN CCW TEMPERATURES. 3.1 VERIFY HCV-2874A/B, HCV-2875-A/B, AND HCV-2876A/B OPEN
/-f17 3.2 OPERATE RW PUMPS AC-10A AND AC-100, SECURE RW PUMPS AC-10B'AND AC-10D. s 3.3 RECORD INDICATIONS AS FOLLOWS AC-10A DISCHG. PRESS V/ PSIG AC-10B DISCHG. PRESS 'O PSIG AC-10C DISCHG. PRESS y/A PSIG AC-10D DISCHG. PRESS eo PSIG FT-2891 v./
FT-2890 3. 4 GPM GPM > O[ /]_-iff 3.4 OPEN AC-10B DISCHG. VALVE (HCV-2851) BY FAILING INST. I AND BLEEDING DOWN AIR PRESSURE. / M 3.5 RECORD INDICATIONS AS FOLLOWS l AC-10A DISCHG. PRESS ,2f,j' PSIG 1 1 hh h
AC-10B'DISCHG. PRESS 40 .PSIG AC-10C: DISCHG. PRESS If.L PSIG AC-10D DISCHG. PRESS 'o PSIG FT-2891 3,3 FT-2890 ii GPM} GPM [ /,Zdd 3.0 OPEN'AC-100 DISCHG. VALVE (HCV-2853) BY FAILING INST. AND 3LEEDING DOWN AIR PRESSURE.
.ZiD 3.7 RECORD INDICATIONS AS FOLLOWS:
AC-10A DISCHG. PRESS 3o PSIC AC-10B DISCHG. PRESS O PSIC AC-10C DISCHG. PRESS .29.9 PSIC-AC-10D DISCHG. PRESS Ins- PSIG . FT-2891 3. c GPM FT-2890 J .f GPM M M P ),id/ l 3.9 CLOSE HCV-2851 BY OPENING IA ISOLATION AND
.REPRESSURIZING SYSTEM. / l'ftP
/
3.10 RECORD INDICATIONS AS FOLLOWSt l AC-10A DISCHG. PRESD. 3.L# PSIG l AC-10B DISCHG. PRESS e PSIG AC-10C DISCHG. PRESS _32,0 PSIG AC-10D DISCHQ. PRESS iLM PSIG Nk ? /N
-3.11 CLOSE HCV-2853 BY OPENING IA ISOLATION AND REPRESSURIZING SYSTEM. 74T8 3.12 OPERATE RW PUMPS AC-10B AND AC-10D, SECURE RW PUMPS AC-10A AND AC-10C. M 3.13 RECORD INDICATIONS AS FOLLOWS L AC-10A DISCHG. PRESS eo PSIG AC-10B DISCHG. PRESS 41 7 PSIG AC-10C DISCHG. PRESS eo PSIG AC-100 DISCHG. PRESS ' 4rr PSIG
, /1-ljf/
I 3.14 OPEN AC-10A DISCHG. VALVE (HCV-2850) BY FAILING INST. R AND BL2EDING DOWN AIR PRESSURE. g 3.15 RECORD INDICATIONS AS FOLLOWSt AC-10A DISCHG. DRESN 40 PSIG AC-10B DISCHG. PRESS 3f,y PSIG AC-10C DISCHG. PRESS o PSIG . AC-10D DISCHG. PRESS If,1 PSIG FT-2891 FT-2890 '.f 7s . t GPM GPM >U[ J_-iff 3.16 OPEN AC-10C DISCHG. VALVE (HCV-2852) BY FAIL 2NG INST. AIR AND ftf($ 0 Of E
BLEEDING DOWN AIR PRESSURE. 1-12/ 3.17 RECORD INDICATIONS AS FOLLOWS: AC-10A DISCHG. PRESS 4O PSIG. AC-10B DISCHG. PRESS - 27.7 ~ PSIG AC-10C DISCHG. PREGS /.1s DSIG AC-10D DISCHG. PRESS 2 r, u_ ___ PSIG FT-2891 u GPM FT-2890- .tf GPM
# c,7# /,2d f[
3.18 CLOSE HCV-2850 BY OPENING IA ISOLATION AND REPRESSURIZING SYSTEM. /f_-),,ff 3.19 RECORD INDICATIONS AS FOLLOWS AC-10A DISCHG. PRESS to PSIG AC-10B DISCHG. PRESS u (., PSIG AC-10C DISCHG. PRESS /ds PSIG ! AC-10D DISCHG. PRESS 31# PSIG FT-2891 ,,14 GPM FT-2890 .r .1 GPM 2 y#[# I/M 3.20 CLOSE HCV-2852 BY OPENING IA ISQLATION AND REPRESSURIZING SYSTEM. M 3.21 RESTORE SYSTEM TO NORMAL AS REQUIRED POR OPERATION. 7-4W 3.22 NOTIFY SHIFT SUPERVISOR TEST IS COMPLETE. C /f-f.fy' 78 REMARKS m
,/ /
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t'*/// // DATE/ TIME 7,EDf n/5" COMPLETED BM _, W/,14_ .. l
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l i PM9 11 09 73
1 Dato:"7/11/88 ,, To: J.K. Recy N' 8 #/4 From: S.F. Swearngin. .
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Subject:
Raw Water Pump Discharge Check: Valves Testing of the raw water pump discharge check valves' performed.to \ date has effectively shown that the "A" and "B" pump checks are performing adequately while both the "C" and "D" check valves are leaking excessively. 'y Data from the test performed.on 7/9/88 is as follows (MO-882946): 1
' AC-10A and Ac-10C running Total flow i both discharge block valves shut - 7500 gym l AC-10B block valve open (HCV-2851) - 7000 gym i AC-100 block valve open (HCV-2853) - 6500 gpm both discharge block valves open - 6300 gym ,
AC-10B and AC-100 running both discharge block valves shut - 7400 gym AC-10A block valve open (HCV-2850) - 7300 gym i AC-100 block valve'open (HCV-2852) - 6600 gym both discharge block valves open - 6100 gym Leakage Back pressure (between pump and check) AC-10A discharge check - 100 gym <0 psig AC-10B discharge check - 500 gym <0 psig I AC-10C discharge check - 800 gym 16.9 psig AC-100 discharge check - 1000 gym 14.0 psig , As can be seen from the test results, AC-10C and AC-10D discharge l check valves leak back sufficiently to build up pressure between the pump and the check valve. The above test results, in combination with the result of ST-ISI-RW-1 show that both valves are leaking excessively,.- e s
/ ^ ^ ^
L S.F. Swear i L Senior Engi r U - _ _ - __ __
m- , .Work Instructions MO-883012-Connect UT flow measurement device to piping as required per > direction of cognizant engineer. Vary flows as required to obtain.necessary data. Measurements performed with x-ties closed.. Pump Configuration FT-2890(gym) FT-2891(gpm) UT Flow AC-10A & AC-10C 4200 4200 3989(2891 header) Ac-10A & AC-10B N/A 8400 8325 (2891 header) 1 AC-10A & AC-100 4200 4800 4682 (2891 heeder) 3600 (2890 header) 1 AC-10C & AC-10D 7400 N/A 7400 (2890 header) l;
.AC-10A & AC-10C 4100 N/A 3400 (2890 header) !
I UT flows did not vary significantly.from the installed indication. Given the inaccuracies of ultrasonics, it is highly likely that
. installed instrumentation is erforming properly.
Cognizant Engineer Date 7- / M "/M vv g 1
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