ML20202B498

Rev E3 to Calculation M-662, RHR & Core Spray Pump NPSH & Suction Pressure Drop

ML20202B498
Person / Time
Site:	Pilgrim
Issue date:	12/22/1997
From:	Harizi P, Mileris G, White T BOSTON EDISON CO.
To:
Shared Package
ML20202B485	List: ML20202B482 ML20202B498 ML20202B508
References
M-662, M-662-RE3, NUDOCS 9901290097
Download: ML20202B498 (114)

Text

{{#Wiki_filter:.. _. - _.._ i ? i 1 l i BECo Calculation M-662, Rev. E3 'I '~ 9901290097 990121 PDR ADOCK 05000293't i PDR .6 r P ~ s 1

CALCULATION COVER SHEET PILGRIM NUCLEAR POWER STATION SHEET 1 OF ll2 including Attachments CALC. NO. M-662 REV. E3 FILE NO. SR RTYPE NSR ll B4 01

Subject:

RHR and Core Spray Pump NPSH and Suction Preliminary Calc. O Pressure Drop l Finalization Discipline Division Manager: T.F. White Due Date: 5 Approval /s/: a : Final Calc. {} r i independent Reviewer: Geome V. Mileris /s/ Statement Attached W Page(s) By: Philip D. Harizi Date Ch'k'd George V. Miteris Date Agreed I'I fh0 12-l5-9 7 dH ^" I /r/2 Q 7 W { -~ ' i i Note: Revision E1 provided NPSH analyses for 75 F heat sink temperature. l l Revision E2 is based on new stacked-dis: strainers and removes the debris head loss analysis. l-Revision (~3 is based on a new Containment Heatup analysis per License Amendment 173. This design analysis @ DOES. O DOES NOT require revision to aff ected design documents. Affected Design Documents: Refer to Calc M-664 for Potentially Affected Documents A PDC O IS, @ IS NOT Required. A Safety Evaluation @ IS. O IS NOT Required. Refer to SE-3127 This design analysis O DOES, @ DOES NOT affect the piping analysis index (pal). If the pal is affected. initiate a revision to Calculation M561. Minor revisions made on pages of this calculation. See next revision. Replaces Calc. No. Voided By Calc. No. O i Or Attached Memo l

' CALCULATION CHEET PREPARED BY: PD14-i i c, CALC.# M442 () Boston Edison CHECKED BY: h I REV. E3 DATE 25-NOV 97 SHEET Z OF 103 Table of Contents Section Number Description 1.0 Statement of Problem 2.0 Summary of Results and Recommendations j 3.0 Calculation of Total Suction Losses and NPSH Available 3.A Method of Solution 3.B Input Data and Assumptions 3.C Calculations / Analyses j 3.C.1 Suction Line Head L.oss Calculation 3.C.2 Net Positive Suction Head Calculation 3.C., Sump Hydraulic Performance 3.C.4 Maximum Allowable Pump Suction dP @ IST Conditions { 3.C.5 Containment Initial Conditions (0 Updated FSA.R NPSH Analyses and Figures 4.A Method of Solution 4.B Input Data and Assumptions 4C Calculations / Analyses 4 C.1 Definition of Terms 4.C.2 Equations 4.C.3 Benchmark Case 4 C.4 Updated FSAR NPSH Analysis and Figures 5.0 References 6.0 Attachments l l l l l l

CALCULATION SHEET PREPARED BY: MH-CALC. # M442 Boston EdiSOff CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 3 OF-103 1 Table Number Table Description 1 Input Values 2 Pump Suction Line Configuration l 3 Pipe Line Losses 4 Total Suction Loss 5 NPSH & Max Suction dP @ 130 F 6 NPSH & Max Suction dP @ 166 F 7 NPSH & Max Suction dP @ 185 F 8 NPSH & Max Suction dP @ 0 PSIG 9 Section 4 Inputs 10 Benchmark Case Containment Pressure Available and Required i1 Benchmark Case NPSH Available and Required 12 Containment Pressure Available @ 1%/ Day Leakage Rate 65 F Seawater Temperature 13 Containment Pressure Available @ 5%/ Day Leakage Rate 65 F Seawater Temperature 14 RHR Pump with 1%/ Day Leakage Rate - 65 F Seawater Temperature 15 Core Spray Pump with 1%/ Day Leakage Rate - 65 F Seawater Temperature 16 FliR Pump with 5%/ Day Leakage Rate - 65 F Seawater Temperature '17 Core Spray Pump with 5%/ Day Leakage Rate - 65'F Seawater Temperature 18-Containment Pressure Available @.1%/ Day Leakage Rate 75 F Seawater Temperature 19 Containment Pressure Available @ 5%/ Day Leakage Rate 75 F Seawater Temperature 20 RHR Pump with 1%/ Day Leakage Rate - 75 F Seawater Temperature 21 Core Spray Pump with 1%/ Day Leakage Rate - 75cF Seawater Temperature 22 RHR Pump with 5%/ Day Leakage Rate - 75#F Seawater Temperature 23 Core Spray Pump with 5%/ Day Leakage Rate - 75 F Seawater Temperature 24 ECCS Pump NPSHA Over a Range of Pool Temperatures and Zero Containment Leakage

- CALCULATION SHEET PREPARED BY: %Q. h SOSf0f Edisorp CHECKED BY: MW CALC.# M462 REV. E3 DATE 25-NOV 97 SHEET 4 OF 103 2 Figure Number Figure Description 1 Evaluation of Sump Hydraulic Performance 2 Amendment 9 Benchmark Case - Original FSAR Figure 14.5-10 3 Amendment 9 Benchmark Case - Original FSAR Figure 14.5-9 4 FSAR Figure 14.5-10 NPSH Availability for RHR and Core Spray Pumps After a DBA-LOCA 65 F Seawater Temperature 5 FSAR Figure 14.5-13 NPSH Margin for RHR and Core Spray Pumps After a DBA-LOCA 65 F Seawater Temperature 6 FSAR Figure 14.5-18 NPSH Availabili.:y for RHR and Core Spray Pumps After a DBA-LOCA 75 F Seawater Temperature 7 FSAR Figure 14.5-19 NPSH Margin for RHR and Core Spray Pumps After a DBA-LOCA - 75 F Seawater Temperature 8 FSAR Figure 14.5-9 Total NPSH Available at Maximum Flow

CALCULATION SHEET gggg PREPARED BY: PD}f CALC.# M462 CHECKED BY: h REV. E3 DATE 25-NOV-97 SHEET 6 OF 103 1.0 Statement of Problem This calculation provides an analysis of NPSH conditions for the RHR and Core Spray Pumps during performance test conditions and determines the margin for NPSH available following the Design Basis Loss of Coolant Accident (DBA LOCA). Proper and reliable performance of Emergency Core Cooling System (ECCS) pumps requires adequate net i positive suction head (NPSH) which is defined as the absolute pressure at the pump impeller datum less the vapor pressure of the fluid being pumped. If the available NPSH is less than the NPSH required by the pump, cavitation will occur within the pump. Cavitation reduces the pump performance and may cause mechanical damage. It is necessary to calculate the head losses in the suction lines for the RHR and Core Spray Pumps under normal testing and accident conditions The suction head losses will be used to evaluate pump NPSH at the normal testing and DBA LOCA conditions to determine the minimum margin that will be available to accommodate potential degradation of the suction strainers from LOCA-generated debris. A fixed amount of margin is subtracted from the total available and is used as the basis for the maximum allowable strainer head loss at normal conditions to be applied during pump In-Service Testing (IST). l It is necessary to perform a time dependent analysis of NPSH conditions following the DBA LOCA using the predicted suppression pool temperature profiles and postulated values for containment leakage to determine the minimum NPSH margin that will be l available. The suppression pool profiles are based on the design basis recirculation line break DBA LOCA with 65 F and 75 F ultimate heat sinks Results from the analysis are presented in new FSAR figures showing the minimum NPSil margin for the low pressure ECCS pumps following a DBA LOCA. 2.0 Summary of Results and Recommendations i Table 4 provides the suction pressure drop that is calculated for each RHR and Core i Spray Pump operating at the normal IST performance test conditions and at accident conditions The test condition value represents the pressure drop at the pump suction l between the idle pump no-flow condition and with the normal pump test flow rate 1 i Tables 5,6, and 7 provide calculations of the available NPSH and margin for suppression I pool temperatures of 130 F,166 F. and 185 F. These are the suppression pool temperatures at the stan and at the peak for the 65 F and 75 F heat sink design cases [Refs 10 & 37]. Table 8 gives the available NPSH at the point of minimum NPSH margin during the Suppression Pool cooldown when containment pressure drops back to o psig. l l With the suction conditions degraded due to LOCA-generated debris, a positive NPSH margin must be maintained at the peak pool temperature based on the corresponding

l g gg CALCULATION SHEET PREPARED BY: PDit CALC.# M-662 CHECKED BY: M REV. E3 DATE 25-NOV-97 l SHEET 6 OF 1o3 wetwell pressure shown on Figures 4 and 6 (described below). Evaluation of the ECCS pump NPSH conditions with LOCA-generated debris is included in Ca'.ulation M-734 l [Ref. 39]. Conditions associated with the DBA LOCA are used because this event produces the highest peak in suppression pool temperature. Table 8 provides the available NPSH and margin for the point of minimum NPSH margin l following a DBA LOCA based on the results shown in Figures 5 and 7 (described below). l The 128 F data corresponds to the 5% per day leakage case at the peint of minimum margin when the containment pressure has decreased to atmospheric pressure for the 65 F l heat sink design case. The 124 F data corresponds to the 1% per day leakage case and the 132 F data corresponds to the 5% per day leakage case at the point of minimum margin when the containment pressure has decreased to atmospheric pressure for the 75 F heat sink design case. Figures 4 and 6 provide graphical presentations of the calculated values for " primary l containment pressure" and the " containment pressure necessary to meet NPSH required" for both the RHR and Core Spray pumps after a DBA LOCA with 65 F and 75 F heat ' sinks. Containment pressure is evaluated for a containment leakage rate equal to the l Technical Specification (TS) limit (1%/ day) and 5 times the TS limit (5%/ day). Figures 5 and 7 provide graphical presentations of NPSH margin as a function of time i after a DB A LOCA with 65 F and 75 F heat sinks. The margin curves shown on this figure are the difference between the primary containment pressure and the containment l pressure required to meet the NPSHa for the pump. The Core Spray pumps are predicted j to have smaller NPSH margin throughout the accident response. For the 65 F heat sink l case, the point ofleast margin for the Core Spray pump occurs during the suppression i pool cooldown, approximately 39 hours afler the accident at which time Core Spray pump margin is approximately 10.6 feet. The minimum RHR pump margin occurs at the same l time and is approximately 11.7 feet. For the 75 F heat sink case, the point ofleast margin for the Core Spray pump occurs during the suppression pool cooldown, approximately 72 j hours afler the accident at which time Core Spray pump margin is approximately 10 0 feet. The minimum RHR pump margin occurs at the same time and is approximately iI 2 feet From these total NPSH margin values 2 feet are deducted and the remaining margin is the minimum available for accornmodating LOCA-generated debris on the suction strainers. Based on the information pre:sented, substantial NPSH margin will be available to assure reliable operation of the RHR and Core Spray pumps Available NPSH will exceed l required NPSH over the entire range of suppression pool temperatures that are predicted j following the DBA LOCA. To complete an analysis for the adequacy of NPSH available to the RHR and Core Spray pumps, a debris head loss analysis must be performed for i l comparison to the margin for NPSH available presented in this calculation The debris I analysis and comparison to the NPSH margin is included in Calculation M-734 [Ref 39). l

i l $ Boston Edison PREPARED BY: PpQ-l CALCULATION SHEET CALC,# M-662 CHECKED BY: M 1 REV. E3 DATE 25-NOV-97 ] l l SHEET 7 OF 103 ) 3.0 Calculation of Total Suction Losses and NPSH Available 3.A Method of Solution i This calculation determines the suction line losses for the RHR and Core Spray Pump. ) These losses are used to predict the suction pressure drop that will occur with a clean strainer. The suction line head loss is calculated at the conditions for temperature and pump flow rate for the pump performance In-Sersice Test (IST). The calculation for suction head loss is repeated at the predicted accident conditions for wetwell temperature, pressure, and pump flow rate. This calculation predicts the NPSH available at the ECCS pump suctions under accident conditions and the resulting margin between NPSH Available and NPSH Required. A number ofvariables determine the margin for NPSil available to the pumps. Principally ' they are: Suppression pool water level, temperature, and density. Wetwell pressure. Vapor Pressure of the suppression pool water. Pump suction line head loss which is principally a function of geometry and flowrate (which includes the clean suction strainer head loss). 3 The suction pressure drop as would be read on a pressure gage mounted at the pump suction is also calculated. The pressure drop is the difTerence in the pressure read with the pump idle (0 gpm) and with the pump at the test flow rate. This measurement method cancels out the effect of gage height versus the datum such that only the delta-P is imponant. There is a maximum amount of strainer fouling that can be tolerated such that there will be l adequate NPSH to the ECCS pumps under containment accident conditions. This calculation determines the minimum margin for NPSH available to the ECCS pumps following the bounding DB A LOCA. A fixed amount of the total available margin is used to calculate the maximum pressure drop that may be allowed during routine pump performance testing. The allowable pressure drop for the test conditions is based on the calculated suction line losses at the accident conditions for wetwell temperature, pressure, and pump flow rate. The pressure drop at the test conditions (Poror-suuc - Poror.atwiso ) provides a measure of the dynamic pressure drop caused by resistances and restrictions in the suction line plus l the conversion of static head to velocity head as follows. l dP = Parar-snue - Paror.uivre; = Suction Line Pressure Drop + Velocity Head 1

PREPARED BY: Pt>ff CALCULATION SHEET gg g CALC.# M462 CHECKED BY: M REV. E3 DATE 2540V-97 SHEET 8 OF 103 The allowable suction dP is a fixed amount of NPSH margin allocated for surveillance testing purposes and must be of suflicient magnitude so that it is within a reasonable measurement range considering testing accuracy and repeatability. 3.B Input Data and Assumptions The physical configurations of the suction lines to the RHR and Core Spray Pumps are taken from the drawings listed in the Reference section. The head losses due to pipe fittings are in accordance with [Ref. 7]. Pipe friction values are based on the Moody diagram [Ref. 7]. The pipe roughness value was selected for steel pipe with light rust per [Ref. 8]. The strainer characteristics are in accordance with [Ref.14]. The design basis accident conditions inside containment are in accordance with [Ref 10,37]. The 5600 gpm RHR Pump flow rate is the mnout flow for single pump operation. This single pump value of flow bounds the per-pump flow for the two-pump case used in accident analyses [Ref.11,12]. The 4400 gpm Core Spray Pump flow rate is the runout flow rate assumed in the accident analysis (4100 gpm) plus a minimum flow recirculation flow rate of 300 gpm [Ref. I1,12]. The following assumptions apply:

1. The RHR and Core Spray Pump accident flow rates of 5600 gpm and 4400 gpm, respectively, correspond to the flow at zero reactor pressure.

2. The RHR and Core Spray Pump performance test Oow rates of 4800 gpm and 3300 gpm, respectively, correspond to the IST test conditions with 80 F torus water

l PREPARED BY: PDS CALCUI.ATION SHEET gg CALC,# M442 CHECKED BY: l REV. E3 DATE 25 NOV 97 SHEET 7 OF 103 3.C Calculations / Analyses 3.C.1 Suction 1 ine Head I,oss Calculation Definition of Terms l l K = resistance coefficientfor velocity headloss calculation rate ofpow (gym) Q = V = mean velocity offlow (ft'sec) velocity head (ft) hr = haar = headloss due topuidflow through valves andfittings (ft) headloss due topow through a clean suction strainer (ft) h srnmen t head loss due topaw through suction pipe (ft) h nee l = t total headloss due topow in the suction line with a clean suction strainer (ft) hst ~ density (lbmft') p = acceleration ofgravity equal to 32.2ft'sec' g = dP = pressure drop at pump suction (psi) cross sectional area ofpipe or anfice, orpow area in valve (in') a = A = cross sectional area ofpipe or onfice, orpuw area in valve (ft') d internaldiameter ofpipe (in) = D internaldiameter ofpipe (ft) = c = absolute roughness (in) relative roughness l cD = l = frictionfactor in Equation 5 readfrom Moody diagram lRef 7] L = length ofpipe (ft) equivalent length ofa resistance topow, in pipe diameters 1:D = kinematic viscosity (ft'sec) v IIcad 1.oss Formulas Averarc Flow Velocity l' = (O 17 4805 x 160) Eq I ~ A Velocity IIcad hr = 1,2 Eq. 2 2R i (

CALCULATION SHEET g,gg PREPARED BY: PD}4-CALC.# M462 CHECKED BY: M REV. E3 DATE 25-NOV 97 SHEET 10 OF 103 Reynolds Number Re= Eq.3 v Losses For Valves and Fittines h eg = K y 2 i Eq.4 2g Losses For Straight Pipe L' V

• hipipe = f Eq.5 D> 2g r

Clean Strainer Losses The clean strainer rated pressure drop was taken from Calculation M-667 [Ref. 38] and used to generate a table of values at different flow rates by using a flow-squared relationship. In addition, the initial pipe spool piece is 16" ID which connects to the 17.25" ID suction lines. A head loss K-factor for the sudden enlargement (K = 0.036) was rdded to obtain the total K-factor for the valves and fittings in each suction line. Total Line Loss hst =huar - h nre - h swuwa Eq.6 t t Pump Suction Pressure Dron dP = (hst he ) x (p I44) Eq. ~ Note: This pressure drop (psi) represents the difference betu een the gage pressure readings taken at the pump suction w

• e pump idle (0 gpm) and with the pump at the normal F

flow rate. Since the gage i, ag from a static pressure tap, the velocity head (hr ) is added to the line loss to give ae total change in head

l t $ Soston Edison CALCULATION SHEET PREPARED BY: TW CALC.# M462 CHECKED BY: b l REV. E3 DATE 25-NOV-97 SHEET 11 OF 103 3.C.2 Net Positive Suction Head Calculation Definition of Terms ) NPSHs Netpositive suction head available at the centerline of the pump inlet (ft) = Netpositive suction head required at the centerline of the pump inlet (ft) NPSHa = Net positive suction head margin: NPSHs - NPSHa (ft) NPSHu = Elevation head ofsuppression pool water measured at the centerline of hz = thepump inlet (ft) Dynamic head loss caused bypow through a clean suction strainer and the i hst = suction line (ft) Temperature of the suppression pool water ('F) Troot = i Primary containment positive pressure (psig) Pc = Saturation vaporpressure at the temperature of the pumpedfluid (psia) Pm = Specipe volume offluid(ft'ilbm) Vsr = Eaustions The NPSH available to the RHR and Core Spray pumps is-NPSH,, = h2-hSt + (14.696 + Pc - Sp)(144)(vsp) Eq. 8 The margin for NPSH available is: NPSH ti = NPSH,t - NPSHn Eq.9 ) Tota / Avallable Afargin is the arithmetic difference between the NPSH available and required as de(med above. Available Ala ginfor LOCA Debris is equal 1o 1he Total Available Afargin minus the fixed head loss of 2 feet allocated for pump in-senice te:, ting Constant Inputs lulR Pumps: 27 feet at 5600 gym [Ref b} NPSHa = Core Spray Pumps: 29 feet at 4400 gpm /Ref 5] 12.5feetfrom minimum normal suppresuion water level (-3 '0") to the promp inlet h = i centerline at (-15 '6 ") l Per From the ASAfE Steam Table I " Properties ofSaturatedSteam andSaturated = Water (1' mperature)" l e Same as above. Vsr =

CALCULATION SHEET PREPARED BY: YD gggg CALC.# M462 CHECKED BY: M REV. E3 DATE-25-NOV-97 SHEET 12 OF 103 3.C.3 Sump Hydraulic Performance Sump hydraulic performance, with respect to air ingestion potential, can be evaluated on the basis of submergence level and inlet velocity. Submergence level refers to the water depth above the suction strainer outlet and inlet velocity is the water average velocity entering the strainer outlet pipe. These parameters are expressed nondimensionally as the Froude Number: y Froude Number = hs-V mean velocity offlow (ftdec) = water depth above strainer outlet pipe (ft) s v g acceleration ofgravity equal to 32.2ft%ec' = For BWR's, the air ingestion is zero for Froude Numbers less than 0.8 with a minimum submergence of 6 feet (Ref. 3]. The limiting case for the Pilgrim ECCS suction strainers is the suction line to the RHR pump from the common ECCS strainer since the RHR velocity is greater than for the Core Spray pump, with the evaluation as follows (refer to Figure 1): EL -3'0" minimum tonis water level = EL -l2'3" strainer core pipe outlet top ofopening = 7.69ft/sec RHR inletpipe mean velocity id; 5600 gym (ID - l7.25 ") = 7.69 FrouJe Number = = 0.45 Froude Number 0.45 < 0.8 and submergence 9.25 ft > 6 ft, /. Air ingestion potential = ZERO i i i

$ Boston Edison PREPARED BY: 1)Dlt-CALCULATION CHEET CALC.# M462 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET /3 OF (03 3.C.4 Maximum Allowable Pump Suction dP a IST Conditions The maximum allowable pump suction pressure drop as measured at the IST testing conditions is based on the total suction head losses plus the additional fixed head loss of 2 feet at the accident conditions for wetwell '.empetature, pressure, and pump flow rate. The total suction head loss (hst)is calculated at both the IST conditions for temperature and pump Dow rate and for the accident conditions. The fixed head loss of 2 feet at the accident conditions is used to calculate a maximum dP for the test conditions that will ensure that NPSH s will meet or exceed the available + margin for LOCA debris at the accident conditions using the following relationship: { [(hst-rux + h st ) x (hst-rest I hst.rux )} + hr.n:sr h x (prest I 14-1) (Gj.10 dl%r = i Maximum allowable suction pressure drop at ISTconditions (psi) d1%r = Fixed head loss of 2 feet at accident conditions allocated to pump h st = i In-Service Testing (157) (fi) Suction head loss at accident conditions (ft) hst.rux = Suction head loss at IST conditions (ft) hst-rest = Velocity headatISTconditions (ft) hr. rest = prest Density at ISTtemperature (thmft') = 3.C.5 Containment Initial Conditions The initial conditions assumed for containment temperature and pressure prior to a DBA-LOCA are determined in accordance with BECo Calculation M-748 [Ref 40]: Volume Temperature Pressure Relative (ft') ( F) (psig) Humidity ($) Drywell 132.000 150 1 30 80 Wetwell Airspace 124,500 85 0 00 100 Calculate Initial Mass of Noncondensible Gas: '(Pn + 14.696)-( Pyp)'(V )*i44 "~ i n fl Alp = (Drynii) R(T, 460) f i L..

PREPARED BY: WW CALCULATION SHEET Fd % CALC.# M-662 CHECKED BY: } REV. E3 DATE 25-NOV.97 SHEET /f OF 103 2 i (Pg + 14.696)-(pPyp) (Vy)*l44 n My= (wetwell) R(7jy + 460) where: R = 53.3 fl-lbf/lbm-R Pir = 17184 psia @ 150 F 961 psia @ 85 F Dryweil = 7,613 lbm Wetwell Airspace = 8,702 lbm Total Noncondensible Gas = 16,315 lbm The value of 16,315 lbm is used as the initial nitrogen mass inside containment at the stan of the DBA-LOCA. This mass of nitrogen is based on a Drywell volume of 132,000 ft' which is a conservatively low value for determining the minimum credible initial mass. The DB A-LOCA involves a breakdown of the reactor vessel pressure boundary with subsequent flooding of only the core volume within the reactor shroud. Therefore, the Drywell volume used to calculate the containment pressure Pc after a DBA-LOCA is conservatively based on the larger volume of 147,000 ft' as was used in the original FS AR NPSH analysis. l

CALCULATION SHEET gggg PR2DARED DY: Ppn-CALC.# M462 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET ff OF fo3 Evaluation of Sump Hydraulic Performance 2 Strainers w/ 2 RHR & 1 Core Spray Suction Nozzle Each Stacked Disk Construction with Horizontal Core Tube 2 Strainer Screen Area = 670 ft Each Screen Openings = 1/8" Diameter 40% Open Area 0.120' Thick Rated Head Loss = 0.5254 psi at 10,000 GPM l Torus Mnmum Water Levell l EL -3'0" l u l s a Minimum Submergence = 9 Y l Torus l l E L -12'3"l" N 18" Outlet Pipe for Each Pump RHR Flow V = 7 69 ft/sec [Refs.13,14,15,38] l Strwner 24" Core Pipe l @ 5600 GPM per Pump Figure 1

~ k O5l 9 5 -i C g h Table 1 - Input Values E O Friction Factor f for 18" Fitti. gs = 0.012 E 4 Z Piping Absolute Roughness e (in) = 0.006 2 e (ft) = 0.00050 S Q o 5! -1 lK Values (Crane) ] 45 EL l 90 LR EL l 90 SR EL Tee Branch l Tee Run l Gate Valve l B' fly Valve Effective UD for Fitting 10 1 14 20 60 20 8 25 g fr Turbulent Flow Friction Factor 0.0120 0.0120 0.0';20 0.0120 0.0120 0.0120 0.0120 3 g g. K = (UD)

• f r FOR 18" FITTINGS 0.120 0.168 0.240 0.720 0.240 0.096 0.300 4

lK Values (Calculated) l 56 EL l 64 EL l Flex Joint Effective UD for Fitting i 12.4 1 14.2 8 fr Turbulent Flow Friction Factor l 0.0120 0.0120 0.0120 K = (UD)

• fi FOR 18' FITTINGS l

0.149 0.170 0.096 lK Values (Crane) l Expand l Reducer [ Effective K for Fittings Pipe Eccentric independent of Friction Factor 16 x 17.25 18 x 12 K = fixed 0.036 0.090 0 s RHR and Core Spray Pumps Flow Loss (psi) Loss (ft) y Q Suction Strainer Loss (Clean) o 3000 0.047 0.112 Q 3500 0.057 0.136 O O 3600 0.068 0.161 $. E 3750 0.074 0.175 4100 0.088 0.209 4400 0.102 0.241 g 4600 0.111 0.263 9 U 4800 0.121 0.287 5000 0.131 0.311 5100 0.137 0.324 5600 0.165 0.390 Rated delta 0.5254 psi at 10000 gpm 10000 0.525 1.245 RHR/CS NPSH Calc 25-NOV-97 File = RHRSST03.XLS l

Table 2 - Pump Suction Line Configurelion to 2 O o m l L Length d Di meter D Diimeter a Area A Ares pipe g Pipe No. (ft) (inches) (ft) (in ) (ft ) Pipe Class Schedule m g g 2 2 O g CS A-1 79.0 17.25 1.44 233.71 1.62 18*-HL/HD Std g CS A-2 1.0 11.25 0.94 99.40 0.69 12"-HD Std g g g O CS B-1 79.0 17.25 1.44 233.71 1.62 18"-HUHD Std CS B-2 1.0 11.25 0.94 99.40 0.69 12"-HD Std g h g RHR A 94.0 17.25 1.44 233.71 1.62 18"-HUHB Std a RHR B 56.0 17.25 1.44 233.71 1.62 18"-HL/HB Std m O m RHR C 56.0 17.25 1.44 233.71 1.62 18"-HUHB Std n RHR D 94.0 17.25 1.44 233.71 1.62 18"-HUHB Std i Valve or CS A-1 CS A-1 CS A-2 CS A-2 CS B-1 CS B-1 CS B-2 ' CS B-2 3

h g

Fitting Count K Count K Count K Count K w O w l 45 EL l 4 0.480 1 0 0.000 4 0.480 0 0.000 6" ~ 90 LR EL i 1 0.168 0 0.000 1 0.168 0 0.000 90 SR EL I 3 0.720 0 0.000 3 0.720 0 0.000 56 EL 1 0.149 0 0.000 1 0.149 0 0.000 Flex Joint 1 0.096 I O 0.000 1 0.096 0 0.000 i 0 0.000 0 0.000 0 0.000 Tee Branch 0 0.000 Tee Run 1 0.240 0 0.000 1 0.240 0 0.000 Gate Valve 1 0.096 O 0.000 1 0.096 0 0.000 Butterfly ValvC 1 0.300 l 0 0.000 1 0.300 0 0.000 Expand 1 0.036 1 0 0.000 1 0.036 0 0.000 Reducer 0 0.000 1 0.090 0 0.000 1 0.090 3 V & F Total K = 2.285 0.090 2.285 0.090 oT m g Valve or RHR A RHR A RHRB RHR B RHR C RHR C RHR D RHR D m Fitting Count K Count K Count K Count K

x

x 45 EL 3 0.360 3 O.360 3 0.360 3 0.360 l 90 SR EL ! 0 0.000 0 0,000 0 0.000 0 0.000 "y 90 LR EL 4 0.672 2 0.336 2 0.336 4 0.672 y i 56 EL 0 0.000 1 0.149 1 0.149 0 0.000 i 64 EL i 1 0.170 0 0.000 0 0.rA0 1 0.170 g Flex Joint i 1 0.096 1 0.096 1 0.096 1 0.096 4 Tee Branch ! 0 0.000 0 0.000 0 0.000 0 0.000 Tee Run 1 0.240 1 0.240 1 0.240 1 0.240 Gate Valve 1 0.096 1 0.096 1 0.096 1 0.096 l Butterfly Valve, 1 0.300 1 0.300 1 0.300 1 0.300 0.036 1 0.036 1 l 0.036 1 0.036 Expand 1 0.000 0 0.000 0 0.000 1 0 j 0.000 f Reducer 0 V & F Total K = 1.970 1.613 1.613 1.970 RHR/CS NPSH Calc 25-NOV-97 File = RHRSST03.XLS \\

k O O Table 3 - Pipe Line Losses 5 6 5 h f (Eq 1) (Eq3) (Ref 8) (Ref 7) (Eq4) (Eq5) 0 y Valves & 0* g Reynolds Pipe Relative Pipe Fittings Pipe g z h var he pin Flow Rate Velocity V Number Roughness Friction t Pipe No. Q (gpm) (ft/sec) Re e/D Factor f (ft) (ft) y O rY -4 For Torus Testing Temp Tpoot (F) = 80 CS A-1 3300 4.53 6.93E+05 0.00035 0.0160 0.73 0.28 CS A-2 3300 10.65 1.06E+06 0.00053 0.0170 0.16 0.03 U CS B-1 3300 4.53 6.93E+05 0.00035 0.0160 0.73 0.28 E h CS B-2 3300 10.65 1.06E+06 0.00053 0.0170 0.16 0.03 RHR A 4800 6.59 1.01E+06 0.00035 0.0160 1.33 0.71 4 RHRB 4800 6.59 1.01 E+06 O L 35 0.0160 1.09 0.42 RHR C 4800 6.59 1.01E+0G 0.000 ^, E 0.0160 1.09 0.42 RHR D 4800 6.59 1.01 E+06 0.00035 0.0160 1.33 0.71 For Torus Peak Temp Tpoot (F) = l 130 l. CS A-1 4400 6.04 1.55E+06 0.00035 0.0158 1.29 0.49 CS A-2 4400 14.20 2.38E+06 0.00053 0.0170 0.28 0.06 CS B-1 4400 6.04 1.55E+06 0.00035 0.0158 1.29 0.49 CS B-2 4400 14.20 2.38E+06 0.00053 0.0170 0.28 0.06 RHR A 5600 7.69 1.98E+06 0.00035 0.0158 1.81 0.95 RHR B 5600 7.69 1.98E+06 0.00035 0.0158 1.48 0.56 o 3 RHR C 5600 7.69 1.98E+06 0.00035 0.0158 1.48 0.56 5 RHR D 5600 7.69 1.98E+06 0.00035 0.0158 1.81 0.95 Q 8 8 cn tn For Torus Peak Temp Troot (F) = l 166 l 5 CS A-1 4400 6.04 2.05E+ 06 0.00035 0.0155 1.29 0.48 CS A-2 4400 14.20 3.15E+06 0.00053 0.0170 0.28-0.06 CS B-1 4400 6.04 2.05E+06 0.00035 0.0155 1.29 0.48 CS B-2 4400 14.20 3.15E+06 0.00053 0.0170 0.28 0.06

p RHR A 5600 7.69 2.61E+06 0.00035 0.0155 1.81 0.93 RHR B 5600 7.69 2.61 E+06 0.00035 0.0155 1.48 0.55 RHR C 5600 7.69 2.61E+06 0.00035 0.0155 1.48 0.55 RHR D 5600 7.69 2.61 E+06 0.00035 0.0155 1.81 0.93 RHR/CS NPSH Calc 25-NOV-97 File = RHRSST03.XLS

b h-h Table 3 (Cont.) - Pipe Line Losses (Eq1) (Eq3) (Ref 8) (Ref 7) (Eq4) (Eq5)

• g m

_4 z g 5 Valves & Reynolds Pipe Relative Pipe Fittings Pipe gZ h var he pipe Flow Rate Velocity V Number Roughness Friction w t g z, Pipe No. Q (gpm) ~ (ft/sec) Re e/D Factor f (ft) (ft) A rri For Torus Peak Temp Tpoet (F) = 185 MM CS A-1 4400 6.04 2.32E+06 0.00035 0.0155 1.29 0.48 y CS A-2 4400 14.20 3.55E+06 0.00053 0.0170-0.28 0.06 y s CS B-1 4400 6.04 2.32E+06 _0.00035 0.0155 1.29 0.48 3 o g CS B-2 4400 14.20 3.55E+06 0.00053 0.0170 0.28 0.06 5 W RHR A 5600 7.69 2.95E+06 0.00035 0.0155 1.81 0.93 0 RHR B 5600 7.69 2.95E+06 0.00035 0.0155 1.48 0.55 RHR C 5600 7.69 2.95E+06 0.00035 0.0155 1.48 0.55 RHR D 5600 7.69 2.95E+06 0.00035 0.0155 1.81 0.93 i. A O E 9 9 s 8 8 AA T-RHR/CS NPSH Calc 25-NOV-97 File = RHRSST03.XLS

k 'O Table 4 - Total Suction Loss S 6 Ef (Table 3) (Table 3) (Table 1) (Eq6) (Eq 2) (Eq7) 0 d Total Total Valve & Total Piping Clean Suction Suction Velocity Suction E z Fitting Head Loss Strainer Head Loss Head @ Pi Pressure y h pipe hL STRAINER hst hv Drop j g Flow Rate Losses hevy t Pump No. Q (gpm) (ft) (ft) (ft) (ft) (ft) (psi) O M -4 For Torus Testing Temp Tpoot (F) = 80 Core Spray A 3300 0.89 0.31 0.14 1.33 1.76 1.34 DI Core Spray B 3300 0.89 0.31 0.14 1.33 1.76 1.34 6 E h h RHR A 4800 1.33 0.71 0.29 2.32 0.67 1.29 RHR B 4800 1.09 0.42 0.29 1.79 0.67 1.07 RHR C 4800 1.09 0.42 0.29 1.79 0.67 1.07 RHR D 4800 1.33 0.71 0.29 2.32 0.67 1.29 For Torus Peak Temp Tm (F) = l 130 l Core ^rray A 4400 1.58 0.55 0.24 2.37 3.13 2.35 Core Spray B 4400 1.58 0.55 0.24 2.37 3.13 2.35 RHR A 5600 1.81 0.95 0.39 3.15 0.92 1.74 RHR B 5600 1.48 0.56 0.39 2.44 0.92 1.43 RHR C 5600 1.48 0.56 0.39 2.44 0.92 1.43 RHR D 5600 1.81 0.95 0.39 3.15 0.92 1.74 S b For Torus Peak Temp Troot (F) = l 166 l m t Core Spray A 4400 1.58 0.54 0.24 2.36 3.13 2.32 O N Core Spray B 4400 1.58 0.54 0.24 2.36 3.13 2.32 RHR A 5600 1.81 0.93 0.39 3.13 0.92 1.71 tn to 5 RHR B 5600 1.48 0.55 0.39 2.43 0.92 1.41 RHR C 5600 1.48 0.55 0.39 2.43 0.92 1.41 h RHR D 5600 1.81 0.93 0.39 3.13 0.92 1.71 v For Torus Peak Temp Troot (F) = l 185 l Core Spray A 4400 1.58 0.54 0.24 2.36 3.13 2.31 Core Spray B 4400 1 58 0.54 0.24 2.36 3.13 2.31 RHR A 5600 1.81 0.93 0.39 3.13 0.92-1.70 RHRB 5600 1.48 0.55 0.39 2.43 0.92 1.40 RHR C 5600 1.48 0.55 0.39 2.43 0.92 1.40 RHR D 5600 1.81 0.93 0.39 3.13 0.92 1.70 RHR/CS NPSH Calc 25-NOV-97 File = RHRSST03.XLS

h a5 5 o -4 ~,. C Table 5 - NPSH & Max Suction dP @ 130F (Table 4) (Eq8) (Ref S&6) (Eq9) (Eq 10) g g 5 Z i g Available Max Suction u Suction Suction Total Ma. gin for dP S Q Torus Elev Head Wetwell Available LOCA Measured O M -1 Temp Vapor Spec Head Loss Press Available Required Margin Debris @ IST - Tpoet Press Pvp Volume Vsp hz hst Pc NPSHA NPSHa NPSHu NPSHu conditions 3 E (F) (psia) l (ft'/lbm) (ft) (ft) (psig) (ft) ' (ft) (ft) (ft) (psi) o Core Spray Pumps A & B @ 4400 GPM: h 130 2.2230 0.016247 12.50 2.38 0.00 39.30 29.00 10.30 8.30 1.82 2.00 43.98 29.00 14.98 12.98 1.82 5.00 51.00 29.00 22.00 20.00 1.82 RHR Pumps A & D @ 5600 GPM: 130 2.2230 0.016247 12.50 3.20 0.00 38.48 27.00 11.48 9.48 1.92 2.00 43.16 27.00 16.16 14.16 1.92 5.00 50.18 27.00 23.18 21.18 1.92

==. RHR Pumps B & C @ 5600 GPM: g 130 2.2230 0.016247 12.50 2.46 0.00 39.22 27.00 12.22 10.22 1.70 2.00 43.90 27.00 16.90 14.90 1.70 j g 5.00 50.92 27.00 23.92 21.92 1.70 g m Q 'n B m = Note. Wetwell pressures of 2.0 & 5.0 psig are presented for information. + RHR/CS NPSH Calc 25-NOV-97 File = RHRSST03.XLS

g g gR O g H i c h Table 6 - NPSH & Max Suction dP @ 166F h-(Table 4) (Eq8) (Ref S&S) (Eq9) (Eq 10) tg g Z' 14 g Available Max Suction u Suction Suction Total Margin for dP S Q Torus Elev Head Wetwell Available LOCA-Measured O M M Temp Vapor Spec Head Loss Press Available Required Margin Debris @ IST NPSHa NPSHu

NPSH, Conditions M

Tpcxx Press Pvp Volume Vsp h2 hst Pc NPSHA (F) (psia) (ft'/lbm) (ft) (ft) (psig) (ft) (ft) (ft) (ft) (psi) h h Core Spray Pumps A & B @ 4400 GPM. 166 5.4620 0.016428 12.50 2.38 0.00 31.96 29.00 2.96 0.96 1.82 3.21 39.56 29.00 10.56 8.56 1.82 4.70 43.08 29.00 14.08 12.08 1.82 ~RAR' Pumps A & D @ 55 0 GPM:' ~ ~ ~ ~ ' '~ ~ 166 5.4620 0.016428 12.50 3.20 0.00 31.14 27.00 4.14 2.14 1.92 3.21 38.74 27.00 11.74 9.74 1.92 4.70 42.26 27.00 15.26 13.26 1.92. RHR Pumps B & C @ 5600 GPM: 166 5.4620 0.016428 12.50 2.46 0.00 31.88 27.00 4.88 2.88 1.70 3.21 39.48 27.00 12.48 10.48 1.70 j g 4.70 43.00 27.00 16.00 14.00 1.70 g m Q 8 9 m m Note: Wetwell pressure of 3.21 psig is the minimum required pressure at 166F to maintain the minimum NPSH margin of 10.56 ft from Table 8 for the limiting Core Spray Pump at 128F. Wetwell pressure of 4.70 psig is the equilibrium pressure at the 166F peak pool temperature. J+ l RHR/CS NPSH Calc 25-NOV-97 File = RHRSST03.XLS

. (n

D o

o Table 7 - NPSH & Max Suction dP @ 185F m -k ? h m -i 'o oC (Table 4) (Eq8) (Ref S&6) (Eq9) (Eq 10) { m _4 M Available Max Suction g O 1 Suction Suction Tntal Margin for dP g h f g Torus Elev Head Wetwell Available LOCA Measured a Temp Vapor Spec Head Loss Press Available Required Margin Debris @IST m m Tpoot Press Pvp Volume Vsp hz hst Pc NPSH4 NPSHg NPSHu NPSHu Conditions n (F) (psia) (ft'/lbm) (ft) (ft) (psig) (ft) (ft) (ft) (ft) (psi) Core Spray Pumps A & B @ 4400 GPM: 185 8.3855 0.016541 12.50 2.38 0.00 25.15 29.00 -3.85 -5.85 n/a 8 h 3 2.46 31.01 29.00 2.01. 0.01 1.82 5 W 5.82 39.01 29.00 10.01 8.01 1.82 0 8.00 44.21 29.00 15.21 13.21 1.82 RHR Pumps A & DYS606 GPMi 185 8.3855 0.016541 12.50 3.20 0.00 24.33 27.00 -2.67 -4.67 n/a 2.46 30.19 27.00 3.19 1.19 1.92 5.82 38.19 27.00 11.19 9.19 1.92 8.00 43.39 27.00 16.39 14.39 1.92 RHR Pumps B & Cg5660 GPM: ~ 185 8.3855 0.016541 12.50 2.46 0.00 25.07 27.00 -1.93 -3.93 n/a y 2.46 30.93 27.00 3.93 1.93 1.70 o x 5.82 38.93 27.00 11.93 9.93 1.70 m 8.00 44.13 27.00 17.13 15.13 1.70 Q L m m D. O Note: Wetwell pressure of 2.46 psig is the minimum required pressure at 185F to maintain a positive 3 U Available Margin for LOCA Debris for the limiting Core Spray Pump. Wetwell pressure of 5.82 psig is the minimum required pressure at 185F to mair.tain the minimum NPSH margin of 10.0 ft from Table 8 for the limiting Core Spray Pump. Wetwell pressure of 8.00 psig is the equilibrium pressure at 185F peak pool temperature. RHR/CS NPSH Calc 25-NOV-97 File = RHRSST03.XLS

k O U Table 8 - NPSH & Max Suction dP @ 0 PSIG 5

• f

~ (Table 4) (Eq8) (Ref S&6) (Eq 9) (Eq 10) M A Available Max Suction p E O Suction Suction Total Margin for dP + 6 Z To Elev Head Wetwell Available LOCA Measured O Temp Vapor Spec Head Loss Press Available Required Margin Debris @ IST S-E Tecxx Press Pvp Volume Vsp bz hst Pc NPSH4 NPSHa NPSHu NPSHu Conditions Qm 3 (F) (psia) (ft /lbm) (ft) (ft) (psig) (ft) (ft) (ft) (ft) (psi). Core Spray Pumps A & B @ 4400 GPM 5 Pool Temp @ 0 psig: 124 1.8901 0.016221 12.50 2.38 0.00 40.03 29.00 11.03 9.03 1.82 5 128_ 2.1068_ _0.01_6238 12.50 2_.38 0.00 39.56 29.00 _ _ _10.56 8.56 1.82 132 2.3445 0.016256 12.50 2.38 0.00 39.03 29.00 10.03 8.03 1.82 RHR Pumps A & D @ 5600 GPM Pool Temp @ 0 psig: = 16.21 14.21 1.92 124 1.8901, 0.016221 12.50 _ 3.20, _ __0.00 39.21 23.00 _ 3 128 2.1068 0.016238 12.50 3.20 0.00 38.74 27.00 11.74 9.74 1.92 o E 9g 132 2.3445 0.016256 12.50 3.20 0.00 38.21 27.00 11.21 9.21 1.92 O m m RHR Pumps B & C @ 5600 GPM .5 Pool Temp @ 0 psig: 124 1.8901 0.016221 12.50 2.46 0.00 39.95 23.00 16.95 14.95 1.70 0.00 39.48 27.00 12.48 10.48 1.70 128 2.1068 0.016238 12.50 _ _2.46 132 2.3445 0.016256 12.50 2.46 0.00 38.95 27.00 11.95 9.95 1.70 Note: This data gives the point of Minimum NPSH Margin during the cooldown when Pc drops to O psig. The 124 & 132 deg F data corresponds to the 1% & 5% per Day leakage cases for a 75 deg F heat sink. RHR/CS NPSH Calc 25-NOV-97 File = RHRSST03.XLS =

fj Boston Edison PREPARED BY: PDR CALCULATION SHEET CALC.# M-662 CHECKED BY: MW REV. E3 DATE 25-NOV-97 SHEET _ ZI OF (03 Section 4.0 Modated FSAR NPSH Analyses and Finures i Section 4.A Method of Solution i This section of the calculation prepares updated NPSH analysis for the FSAR. The original analysis was submitted to the AEC during the Pilgrim licensing review via Amendments 9 and 24 ) to the SAR. This analysis was incorporated into the FSAR as Figures 14.5-9,14.5-10, and l 14.5-13 and Section 14.5.3.1.3. The revised analysis in this calculation will be incorporated into I. the UFSAR. The same approach used in the original FSAR analysis is used. Considering a known suppression pool temperature profile, the coincident containment pressure is calculated using simple thermal i equilibrium assumptions. The " Containment Pressure Required" to provide the necessary NPSH is calculated and plotted with the coincident containment pressure. The difference between the containment pressure at any point in time and the containment pressure required represents NPSH margin. Calculation results are plotted as figures. 1 i 1 l l l I l

PREPARED BY: PDS ggggg CALCULATION SHEET CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 26 OF 103 Section 4.B Input Data and Assumptions Table 9 - Section 4 Inputs Amendment 9 Ref. 65 F Seawater Ref. 75 FSeawater Ref. Parameter Benchmark see Temperature see Temperature see Note 1 N"" I Note 1 Revised Analysis Revised Analysis 34f 0.5?Mday ., 31,33c I?Vday 34f I?Vday a.Contauinient Leakage Rate ..g_ ' impaired Containment 5?Uday 31,33c ~ 53Vday 33c 5%/ day 33c t.. Leakage Rate _,_,..._ _. FSAR Fig.14.5-17 37(8) ' Pool temperature profile i Amendment 9 31,33c FSAR Fig.14.5-7 33d (6) Figure 1-2 v... ..._.....FS AR Fig 14.5-10 ' Ultimate 11 eat Sink 65 F 31,33c 65 F 33c 75 F 37 ' Temperature Operator action time to 10 min 33b 10 min 33b 10 min 37 initiate containment coolme SSW Flowrate 5000 ppni .,.. 33d . 4500 gpm. _ 3 3 e __ _ 45f.!0 gpm 37 Core Spray..NPSil Rgpiired 3 28 feet _,j 31,33c 29 f1 at 4400 gpm 8 29 ft at 4400 gpm 8 i..RIlR NPSil Required _ i.. 28 feet. ' 31,33c 27 ft at 5600 gpm j 9 j 27 ft at 5600 gpm j. 9

Drmell Free Volume 147,000 ff 33a 147,000 ff j

33a 147,000 ff 33a Wetwell Free Volume _ ..l20,000 fP 33a 124,500 ft' 35a 124,500 ff 35a 5.2E6 lbm 31,33c 84,000 ft' 34a 84,000 ff 34a i Toms Water Volume _ Initial Torus Water 80'F 31,33c 80 F 40 85 F 40 .Tcmperature _, 80 % 40(5) 80 % ' 40(5) ' Initial Drvucil Relatise 100 % 31,33c . Ilumidjty 40 100 % 40 initial Wetwell Relatise 100 % 31.33c 100 % llunudity

PREPARED BY: 13)Q. $ Boston Eh CALCULATION CHEET CALC.# M-662. CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 27 OF 103 Table 9 - Section 4 Inputs Amendment 9 Ret 65 FSeawater Ret 75 FSeawater Ret Parameter Benchmark see Temperature see Temperature see Note 1 Note 1 Note 1 Revised Analysis Revised Analysis Initial Wetwell Airspace 80 F 31,33c 80 F 40(3) 85'F 40(3)

5. Temperature

[ initial Drywell Temperature i. 150 F 31,33c 150 F 40(4) 150 F 40(4) j , Initial Drywell Pressure ...__0.psig. , 31,33c 1.30 psig. 40 J 1.30ysig _,_ 40 j Initial Wetwell Airspace ~ 0 psig 31,33c 0 psig 40 0 psig 40 . Pressure ) 1 16,315 lbm 40 Initial Mass of Nitrogen _,.. ~ ' 15,666 lbm [ 40 16,315 lbm j 40 Containment Reference n/a 45 psig or 59.7 psia 34f 45 psig or 59.7 psia 34f Pressure Pr Containment Reference Leak n/a I?Uday ofAfr 34f ISVday ofAfr 34f Raty /.t RIIR Pump Suction ime 4.2 feet (7) 3.20 feet Table 6 3.20 feet Table 7 IIcad Loss CS l ump Suction line IUad ' 4.2 feet (7) 2.38 feet ' Table 6 2.38 feet Table 7 i Loss Elevation head 12.5 feet " Section 12.5 feet Section 12.5 feet Section 3.C.2.b, , 3.C.2.b, 3.C.2.b Notes for Table 9

1. Numbers in parentheses refer to the following notes. References are given at the end of this section.

2. Initial "Dywell Airspace Pressure"is assumed at 1.30 psig. Drywell and Wetwell pressure, temperature, and humidity are used to calculate the initial mass of noncondensible gas inside containment. The combination of the values selected for each orthese six parameters provides a conservative estimate of the initial mass of noncondensible gas.

3. Initial Wetwell airspace temperature is assumed to equal the initial suppression pool temperature.

CALCULATION CHEET. pg PREPARED BY: - PDH-CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET -28 OF 103

4. Initial Drywell Temperature is assumed to equal a uniform value of 150 F instead of the 135 F (General area temperature l

per FS AR Table 5.2-2 "Drywell Atmosphere Cooling Data Sheet") which is used in containment and decay heat removal system analysis. A higher initial temperature is conservative because less initial noncondensible mass is present in containment. Therefore, the partial pressure of noncondensible gas is less initially and less over the course of the transient and cooldown resulting in a lower value for NPSHA.

5. The initial Drywell humidity used is 80% versus 100% assumed in the Amendment 9 analysis as described in the reference.

6. A table of values for suppression pool temperature as a function of time after the accident is taken from the pool temperature curve specified.

7. Amendment 9 analysis was prepared before the actual piping configuration was knowm The suction line head loss used in the benchmark analysis was estimated between 4.2 and 4.7 feet. Use of the value of 4.2 feet gives good agreement between the benchmark case for Figure 14.5-10. Use of the value of 4.7 feet gives good agreement between the benchmark case and Figure 14.5-9. The actual suction line head losses are lower based on the as-built piping configuration.

8. The data table for the suppression pool temperature curve contained in reference 37 was provided by GE.

l 1 )

2 1 cal CULATION CHEET $hmEh PREPARED BY: PDit CALC.# M-662 CHECKED BY: b I REV. E3 DATE 25-NOV-97 SHEET 29 OF (03 I Section 4.C Calculations / Analyses i Section 4,C.1 Definition of Terms l H: E!cration ofsuppression pool unter surface above thepump centerline,ft Hsl Suction line losses,ft 14 Reference mass leakage rate at reference pressure Pr, ihm/sec Mt Initial mass ofdry air inside the Dr>well and Il'etwell, ihm Mt

• Mass ofdry air remaining inside the Dr>well and li'etwell after leakage, ihm in Mass ofaireiirrogen in mixture, lhm gas inteak Mass leakage ratefrom containment, lhm&ec inwater Mass of water vapor in mixture, ihm NPSHA Netpositive suction headavailable, feet NPSHM Net positive suction head margin, feet NPSHR Net positive suction head required, feet Pc Pressure ofprimary containment, psia Pc Req'd Pressure ofprimary containment required to provide NPSHR, psia PJ Initialpressure of Dr>well, psia Pgas Pressure ofgas in a mixture ofgas and water vapor, psia Ps Initialpressure of lYetwell air space, psia PT Reference pressurefor mass leakage rate Lr, 45 prig or 59. 7 psia Psp Saturation vaporpressure, psia R or Rgas Specific gas constantfor air / nitrogen, 53.3ft-lbfihm 'R Rwater Specific gas constantfor uuter vapor, 85.8ft-lbfihm-R AT Length of time step, see Td Temperature in Dr>well. *R 7p 1'emperature ofsuppressionpool water, F Ts Temperature in li'etwell air space, R l's l'olume offree air space in li'etu ell ft' l'd Free Dr>well vohane,ft' p

Density of unter in pool, thft' Relative Humidity as Humidity Ratio l l l

i PREPARED BY: PDR-CALCULATION SHEET Fd % CALC.# M442 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET So OF lo3 I Section 4.C.2 Eaustions 1 An expression for calculating the initial mass of noncondensible gas inside the Dgwell and torus can be derived based on the ideal gas law: PV = MRT I Solving for the mass (M): M ='PV RT The total initial mass of noncondensible gas inside containment is the sum of the initial mass located in two separate volumes (torus airspace, and Drywell): Mt = Md + Ms The initial mass in each volume is composed of water vapor and noncondensible gas (air / nitrogen). To calculate the initial mass of noncondensible gas, the contribution to tne initial pressure from water vapor is subtracted. The magnitude of this water vapor contribution is a function of relative humidity p and the saturation pressure corresponding to the mixture temperature: Per Dalton's Rule: 3 Pmixture = Pgas+ $P,p} f i ~ \\$P,p} so P =P gas mixture Equation i l is used to calculate the total initial mass in the Drywell and Wetwell airspace. As discussed above the equation is derived from the ideal gas law, Dalton's rule and the defmition of j relative humidity. The result of Equation i 1 provides the initial mass of noncondensible gas in primary containmeni: I {Pd-( Pip)](14Jk)l'd [Ps-(p Pip))(/JJ"# )! s M=- + -- fi fl ~ Eq.I1 f R 1d R Ts Equation 11 is the general equation to calculate the initial mass of noncondensible gas inside containment as a function ofinitial pressure. humidity, and temperature. Amendment 9 analysis used Eq.12 which is derived from Eq. I1 by setting Drywell pressure equal to 14.7 psia (0 gage). Wetwell airspace pressure equal to 14.7 psia (0 gage), and Drywell and Wetwell humidity equal to 100%. Equation 12 was used to calculate the Amendment 9 FSAR curves.

CALCULATION CHEET PREPARED BY: M g, g CALC.# ' M462 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET Sl OF 103 l (14.7 - Pvp) (144 '"2D, ) Vd (14.7-Pvp)(144 '" 2 Eq.12 M= -+ p * ) Vs f RTd RTs Equations 13a and 13b were used in the Amendment 9 analysis to calculate the percentage of the original mass of noncondensibles in containment afler 1.5 days: Eq.13a At 5% per day: M = (0.95)'SM = 0.926M, f f Eq.13b At 0.5% per day M = (0.995)I M = 0.9925M, f f The above ratio's for 5%/ day and 0.5%/ day were applied as a flat amount in An:endment 9 analysis. Although conservative, this approach is unrealistic and arbitrary. FSAR Appendix R (Equation R.49) provides a rational basis for calculating the leakage from containment based on the calculated pressure during any time step, and a reference leakage at a reference pressure. This equation is presented as Equation 14: 0.5 2 (,% j- \\ P) (atmosphere's) Eq.14 171/cak LT ( \\ / j-( P r> Where: Lr = Leak rate al reference preshure (lhin imil fitne) Py NC/CYCitCC prCSAlfre lH UllHOAp/IClYA P = COHIQlHlHCHIprCSSilft' U1 liHit' AICp lH UllHOAp/lCYCS Equation 14 is modified as shown in Equation 15 to calculate leakage as a function of pressure measured in units of psia. t

r PREPARED BY: M CALCULATION SHEET. gg CALC.# M462 CHECKED BY: b REV. E3 DATE 254lOV-97 SHEET 32 OF 103 0.5 I 14.7 /- \\ Pc ) ? Eq.15 micak = LT (Psia) f % 2 14.7 ,sj_ ? \\P) _ T Only a portion of the mass leaked from the containment is gas since the mixture leaking from containment is a mixture of water vapor and noncondensible gas. The humidity ratio (w) can be ( used to determine the amount of dry gas contained in the vapor / gas mixture. This ratio is derived from the ideal gas law since the water vapor and gas are homogeneously mixed in the containment volume (Drywell and Wetwell) and both the water vapor and gas are at the suppression pool l temperature. Also, the containment atmosphere is assumed to be at 100% relative humidity (saturated) aner the event has been initiated. Equation 16 which provides the humidity ratio based on the ratio of gas and water vapor pressure is derived from the ideal gas law as follows: m b' m __ water ___ Ras 'P 'P M Ewater* ? gas 85.8 P gas gas P W = 0.621 Pgas P =P-P gas c sp P,p Eq.16 m = 0.62/ P - P,p y Since "mw" from Equation 15 is a mixture gas and waier Japor where: j micak = mwater + mgas i and &= \\ mgas I Solving for and mwater mwater = M mgas

l s CALCULATION SHEET p PREPARED BY: PDM-CALC.# M462 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET '33 0F IO3 Substituting e m for m in the first equation yields: gas water micak = m mgas + mgas Solving for mgas yields: micap Eq.17 m#"# = (m + 1) Equation 17 provides the mass of noncondensible gas in a mixture with total mass equal to mica and a humidity ratio m. The noncondensible gas remaining in containment at any time after the containment isolates is the initial mass minus the mass of noncondensible gas that has leaked. The remaining mass (Mt*) is calculated by the following formula: Mt* = Mt - E (*/'" ( At) Eq.I8 m + 1) Equation 19 is used to calculate the containment pressure at any time as the sum of the partial pressure of the remaining noncondensible gas and the vapor pressure corresponding to the suppression pool temperature. e ,3 Mt

• R 7p ft ~

Eq.19 Pc - + Pip til+1's I 144in s NPSHA is defined by the following terms: ( . n f 44 '"1 Eq.20 NPSHA =(Pc-Pip) \\ ft]) +H.-#3/ P The term (Pc-Pip) represents the net pressure above the vapor pressure provided by the noncondensible gas inside containment. Therefore: Eq 21 Pgas =(Pc-Pip) NPSHA is calculated as follows, where Pgas is measured in feet of water:

CALCULATION CHEET PREPARED BY: PDS Fd % CALC.# M462 CHECKED BY: b REV. E3 DATE 25-NOV-97 SHEET Sf OF 107 f 144"'2 h k ft * ) Eq.22 NPSHA = Pgas + H: - Hst P The containment pressure required to provide adequate NPSH is derived using Equation 20 by letting NPSHA equal NPSHR and solving for the containment pressure Pc. When NPSHA equals NPSFIR the containment pressure is by definition egual to the required containment pressure' Pc R:q 'd. } l A j Eq.23 Pc Reg'd= Psp +(NPSHR - H:+ Hst), g- ]44 "'. l \\ fi ) The NPSH margin is the difference between the containment pressure that is available and the containment pressure required. f ]44'"2 h Eq.24 NPSHM=(Pc-Pc Reg'd) \\ ft2) P or NPSHM = NPSHA - NPSHR The following three equations are general conversions used throughout this calculation: ( h ]44 in !, \\ ' ft ") Eq.25 P(feet)= P(psi) 7 3 lbm p \\ ft ) r 3 lbm p \\ ' ft3) Eq.26 P(psi)= P(feet) g 2 ]44 in,- ( 'jf2) Eq.27 7'( R)= T( F)+460

CALCULATION CHEET PREPARED BY: PbH-g,g l CALC.# M462 CHECKED BY: REV. E3 DATE 25-NOV-97 j SHEET .7f OF 103 i Section 4.C.3 Benchmark Case The calculation performed to prepare the curves currently presented in the FSAR is repeated to benchmark the methodology. This case is the first case performed and is hereafler referred to as the " Benchmark Case" Per Amendment 9 to the FSAR, the following methodology is used:

1. Calculate the initial mass of air [or nitrogen] inside the primary containment assuming atmospheric pressure and a 100% relative humidity in both the Wetwell and Drywell. The l;

initial Drywell temperature was assumed to be 150 F, and the Wetwell temperature 80 F. The total mass is given by Equation 12.

2. Assume the containment leaked at a constant rate of 5% free vol/ day for 1.5 days, the time required following an accident for the pool temperature to return to 130 F with one RHR l

loop operating. The reduced mass is then given by Equation 13a and 13b.

3. Due to flow through the Drywell vents or vacuum breakers, the Drywell and Wetwell pressures will be approximately equal, i.e., Pd = Ps.

4. The Drywell and Wetwell airspace masses and volumes can be combined and the l

containment (Drywell and Wetwell) pressure calculated as a function of the suppression pool temperature for the following reasons: j Water from the pool is being pumped into the reactor vessel by a core spray cooling system l pump. This water is heated by the decay heat of the reactor core and pours out of the vessel via the break and into the suppression pool via the Drywell vent system. The water which returns to the Wetwell is hotter than the suppression pool water by approximately L 50 F. Because of the large flow of water involved, the low thermal capacity of the Drywell atmosphere, and the slow time rate of change of the temperature of the water flowing i through the Drywell, the Drywell atmospheric temperature will track the water temperature. I The Drywell airspace temperature will always be hotter than the pool temperature because of the elevated temperature of the break flow. l l

5. The containment pressure is then given by Equation 19.

l l

6. The total NPSH available to the pumps is given by Equation 20.

PREPARED BY: TfpQ. gg g CALCULATION SHEET CALC. # M-662 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET 36 OF 103 in the following table the methodology used to calculate values plotted on the original FSAR Figure 14.5-10 is repeated. Based on a comparison, the values contained in the following table and plotted on the attached Figure 2 are consistent with the results presented in original FSAR Figure 14.5-10. Tahic 10 - Henchmark Case Containment Pressure Available and Required at 0.5% and 5%/ day Leakage FI4.5-10 Eq.27 Lookup Eq 13a Eq 19 Eq 21 Eq.13b Eq 19 Eq.21 Eq.23 Mt%lt ca. Mt%1t en, Pc Req'd for 5?Vday Pc d 5% 0.5*Vday Pc d 0.5% NPSHA of Tune Pool Temp Tp Psp Leakage Rate Leakage Pgas Leakage Rate Leakage Pgas Hz Hsl 28 feet bec) ( F) ( R) (psian (%) (psia) (fect) (%) (psia) (fect) (fect) (fect) (psia) i i *alues below ! ' l'alues below ' l'alues below ' l' clues below plotted on plotted on plotted on plotted on Rgure : Rgure 2 Rgure : Rgure 2 U U U U l(H) I 2(, 0 58r. I 99(, 0 92(, 1-l.696 29.(>8 09925 14 6'1(. 29.68 ' I 2.5 4.2 10.42 ~ I "29.66 09925 14 696 ' 59 66. III5 d '2 " bili ~ 21Mt 126 2 5x6 2 007 0 9 N. I4.695~ : ~59'.'52 'I 0.9925 ' ~ "I4.732 . 29.6l[115~ ' 4II 35.49 l4 696 100 I27I . 587 2 069. 0926 ~ !9925 ~ II549 29.70 12.5 4.2 10.58 4lH) 158 8 589 2S l'53 0926 14.696 ~5Ui 0 500 '13 0.0 . 590 - 2.'255" - 0926 14.696 29.18 0.9925 14.947 29.77. 12.5 4.2 10.64 . 2 600 131.0 ' 591 ~ 2.286 : 0.926 14.696 29.04 0.9925 ^ 15.029 29.82 ' 12.5. 4.2 10.70 ~ io ~ 591 ' '2.34i "~0.9 56 14.696 28.91 0.9925 15.111 29.88 12.5 4.2 10.76 7t l32.0 ...o.. 4... -...... 9 p S00 133 0 . 593 2 407 0.926 14.696 28.77 0.9925 15.194 .' 29.94 ; 12.5 4.2 10.82 ^ 900 134.0 ~[ Sya~^'2375 0 956~ 14.696 28.63 0.9925 15.281 30 00 12.5 4.2 10.88 -.......-..-a....-..... 1000 134 8 ' 595 2.526 0926 14.696 28.52 0.9925 15.351 30.05 12.5 4.2. 10 93 l40 5 . 601 2.U' 5 0.U26 ~ 'I5.008 IU5 0.9925 15.876 } 30 39 12.5 4.21 11.32 2A00 ^ ~ 2 e -...-.4 ..4.. 18 H H) I44.5 ' 605 3.242 ' o926 "i55402 28.57 0.9925 16.276 ' 30 62 12.5 4.2 11.63 ~ 57.i , 608 U96 0 956 I"5.717 28.ii'. 09925~ 16 595 30.81 12.5 ' 4.2 11.87 ~ l. 41H N) " ~ ~ '57{ [30.95 _ ~~.993 58.88~ 0.9025 51H10 I 50 0 610 " 3 72l' " 05'6 l6 12.5 4.2 12.09 15 2

PREPARED BY: PDS $ Boston Edison CALCULATION SHEET CALC.# M-662 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET T/ OF /oS Talite 10 - Benchmark Case Containment Pressure Available and Required at 0.5% and 5%/ day Leakage F14.5-10 Eq 27 Lookup Eq 13a Eq.19 Eq.21-Eq.13b Eq.19 Eq.21 Eq.23 Mt%1 (r. Mt%1t Q Pc Reg'd for 5"Vday Pc g 5% 0.5?Uday Pc g 0.5% NPSHA of Time Pool Temp Tp thp Leakage Rate Leakage Pgas Leakage Rate Leakage Pgas Hz Hsl 28 feet (sec) ( F) ( R) (psial (*') (psia) (fect) (%) (psia) (feet) (feet) (fect) (psia) 6tH10 152.0 . 612 3.903 0.926 16.220 . 28.99. 0.9925 17.104 , 31.08 12.5 i 4.2 i 12.27 .r 9g,gg t-154.0 514 ' "iSIM~ 0.955 16.454 29.11 0.9925 17.342 ! 31.20 12 5 II 12.46 50H)o 156.0 516 [511" 0.925 16.703 29.22 0.9925 17.59 i 31.32 12.5 I'5 12.67 9t H Hi 157.5 . 61x 4.468 ; 0926 16.890 1 29.31 i 0.9925 17.782 i 31.41 ^ 12.5 4.2 12.82 itHHNI ' 159 0 ' 619 4 633 ~ 0.926 17.085 ' 29.39 ' O.9925 17.980 ' 31.50 12.5 4.2 12.98 15000~ 163 2" , inii' ; 5 113. 0.926 17.655 29.63. 0.9925 18.555 31.76. 12.5 "li" 13.45 ^ 20t'Uii ~ ~ ~I55 0 " 'A25'^ 1555" OI125 l'7.909 29.15 0.9925 18.812 i 31.87 12.5 4.2 13.67 25000 165 5 626 5 401 ~ 0926 17.984 29.76 0.9925 18 888 ' 31.90 12.5 4.2 13.73 .......... ~.. ItHHH1 1650 625 5 116. 0926 17.909 29.73 09925 IM MI2 , 3I87 12 5 42. 13 67 ' '40000 1620 022 4 972 0 926 I7[485 " 29 56 0.9955" IX'3xI 5IS68 III5 12 13.31 Sout Hi ' l5M I 618 4 542'. Oi)in 'I6.979 . 29.35 0525 "iiii2 ". "5IT4i. 'lil~ "I'2 12.89 6t H M H) $ ~15I)~". 5i.4. i.IUT [~iii>I5 16.454 I 29.11 0.9925 [ 17.342 ! 31.20 12.5 ; 4.2 12.46 ^ 7t H HiO "5.55 0 5iiU ' 57,W "IEUi5 ~ 15.382 28.82 0.9925 16.762 30.89 12.5 4.2 12.00 .-..+ xtNH10 144.0 604. 3.200. 0.926 15.350 28.54 0.9925 16.223 30 59. 12.5 4.2. I1.59 600 2"xx9 ~ 0.956 [ ~l4.959 ! 28.32 0.9925 15.826 30.36 12.5 4.2 11.28 ~[ ' "14il.0 90t H M) ~ ItHHHHi "136 5" 55i ' 2 64ti 0.926 14.696 28.26 0.9925 15.502 30.15 12.5 4.2 11.04 II. 15tHHN) [25 5 5S6 1.U0 0.925 14.696 29.74 0.9925 14.696 29.74 ; 12.5 10.40 q. t .p ...g.-... .. p....

PREPARED BY: PpH-gggg CALCULATION SHEET CALC.# M-662 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET 38 OF 10.7 In the following table the methodology used to calculate values plotted on the original FSAR Figure 14.5-9 is repeated, and the results of the recalculation are plotted. Based on a comparison, the values contained in the following table and plotted on the attached Figure 3 are consistent with the results presented in the original FSAR and Amendment 9. Table i1 - llenchmark Case NPSil Available and Required Eq 27 Lookup Eq 13a Eq.19 Eq 21 Eq.22 Pool Mt%1t@5% Pc @ 5% Temperature Tp hp lit list Leakage Leakage Pgas NPSHA NPSHR ( F) ('R) (psia) (feet) (fect) (%) (psia) (fect) (fect) (feet) l'alues below plotted on Fig 3 l'alues below plottedon Fig 3 O O i 140 600 ' 2 889 j 12.5 ~ 4.2 ~ 0.926 14.959 28.3 36.6 28 13 0 . 5io li5i[I2.5 42 0.926 15.993 28.9 37.2 28 + - - - - ? g-t g n g-g- --* 37y g -- t- - t -- ~ - -. m 170 630...,. 5 99 5 12 5 4.2 0.926 18.669 30 0 38 3 28 l +...... ..r... ISO 640 7.511 12 5 4.2 0926 20.386 ~ 30 6 38.9 28 o Eq.27 Lookup Eq.13a Eq.19 Eq.21 Eq.22 Pool M t % 1t 4 5 % Pc @.5% Temperature Tp Ihp lif Hsl Leakage Leakage Pgas NPSHA NPSHR (#F) ( R) (psia) (fect) (fect) (%) (psia) (feet) (fect) (fect) j l'alues below plotted on Fig 3 l'alues below plotted on Fig 3 0 0 ~i9925 15.826 30.4 140 "600 ~5AM9 12.5" 15" ~ 38.7 28 ( . t.. .i ......,.....4... ... ~.. .........._j.,.. -...... 160 620. 4.746 12 5 4.2 0.9925 18.114 31 6 39.9 28 ...-.......I.L.........7,5U ~ I'995 12.[ ~II 0.9955 19.579 32.2 40.5 28 i ~ ' ' T76 I' 180 640 } 7.511......... 21.311 32.8 41.1 28 12 5 4.2 0 9925

i CALCULATION SHEET

1. tg,gg PREPARED BY:

Pp M-- l CALC.# M462 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 39 OF 103 l l l Section 4.C.4 Updated FSAR NPSH Analysis and Figures 1 The calculation performed to prepare the updated FSAR curves is fundamentally consistent with that used in the " Benchmark Case" Revised inputs are utilized in this analysis per Table 9. The following methodology is used:

1. Calculate the initial mass of air (or nitrogen) inside the primary containment. The total initial mass is given in Section 3.C.5 as 16,315 lbm.

)

2. Calculate the reference leakage rate Lr:

The reference leakage rate is a percentage of the initial mass of noncondensibles per unit time. So for the 1%/ day and 5%/ day cases, the reference leak rate is: L (1%) = 16315lbm(.01/ day) = 163.15lbm day or 0.001888lbm / sec T L [5%) = 16315lbm(.05/ day) = 815.75lbm dar or 0.009442 lbm / sec T

3. In successive steps from after the accident until the point of minimum NPSHM is passed, calculate:

Mass leakage (water vapor + gas) from containment ( m/cak ) using Eq.15 l Relative humidity to using Eq.16 i Noncondensible gas leakage from containment ( mgay ) using Eq.17 Remaining mass of noncondensible gas in containment (Alt *) using Eq.18 Containment pressure (Pc) using Eq.19. This calculation is performed for: l 1%/ Day leakage rate - Table 12-for a 65 F seawater temperature i Table 18 for a 75 F seawater temperature j 5%/ Day leakage rate - Table 13 for a 65 F seawater temperature l Table 19 for a 75 F seawater temperature l l

4. Using the same suppression pool temperature data and time steps from the previous step, calculate:

Pressure provided by the remaining mass of noncondensible gas in containment (Pgas) is calculated using Eq. 21, NPSHA using Eq. 22, Pc Rey 'd using Eq. 23, NPSHM using Eq. 24. l l l

~. -- PREPARED BY: PDW $ Boston Edh CALCULATION SHEET CALC.# M462 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 40 OF 103 l These steps are performed separately for the RHR and Core Spray pumps. The results are contained in the following tables: l RHR pump at 1%/ Day leakage rate - 65 F Seawater Temperature (Table 14) i RHR pump at 5%/ Day leakage rate - 65 F Seawater Temperature (Table 16) CS pump at 1%/ Day leakage rate - 65 F Seawater Temperature (Table 15) CS pump at 5%/ Day leakage rate - 65 F Seawater Temperature (Table 17) RHR pump at 1%/ Day leakage rate - 75 F Seawater Temperature (Table 20) l-RHR pump at 5%/ Day leakage rate - 75 F Seawater Temperature (Table 22) CS pump at 1%/ Day leakage rate - 75 F Seawater Temperature (Table 21) CS pump at 5%/ Day leakage rate - 75 F Seawater Temperature (Table 23)

5. As in the Amendment 9 methodology; due to flow through the Drywell vents or vacuum breakers, the Drywell and Wetwell pressures will be approximately equal, i.e., Pd = Ps.

The Drywell and Wetwell airspace masses and volumes can be combined and the containment (Drywell and Wetwell) pressure calculated as a function of the suppression pool temperature for the following reasons: t l Water from the pool is being pumped into the reactor vessel by a core spray cooling system pump for the 65 F case (by a Core Spray pump and LPCI pump for the 75 F). This water i is heated by the decay heat of the reactor core and pours out of the vessel via the break and into the suppression pool via the Drywell vent system. Because of the large flow of water involved, the low thermal capacity of the Drywell atmosphere, and the slow time rate of change of the temperature of the water flowing through the Drywell, the Drywell atmosphuic temperature will track the water temperature The Drywell airspace temperature will always be hotter than the pool temperature because of the elevated temperature of the break flow. l l

CALCULATION CHEET PREPARED BY: M pt g gdjgort CALC.# O2 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 41 OF (03 PILGRIM STATION NPSil Availability for RIIR and Core Spray System -+-Pc (psia) a 5% Leakage --e--Pc (psia) 'a; 0.5% Leakage -*-Pc Req'd -e-Pool Temp ( F) 22 170 .5NN-N {; ! ! l } r_- U ~i $ = hr i + N - -5~!M-$d f _;-$~.@ ~ t _ =-. - ;=.._ a i, .t.. ____._q_ g gg _.2 z-4 s: = _ -+ =_j 7 ;_g_1 1 -t_;_ >+-+-+r. r_- 3 4 ,r y gj

g

'O . ll!j 160 g .__., _ _*w i i + li_ ' - -t_;_ $4_.J- - i Jiz.- .I' r__ 1-t.,2_l ! I rr.--- t __ a-t-t+i Kx m t- ___t -t +1*r _; rf C r:rj:.r ~; i rrr- ; - A - :-+ K. _t-4,; _2__.t=t X ;: --+-t: i;;e + 4 u.- 122 r - - i ^. ;_. -1 n =;-E. - = = _ - _, + f t_i_ - ? -- IX n 150 4:r.: :- E c _In c ; ;; [c[- i~' i.!! 5- _ ! -N. r5 [ _4 t , __ia__.__yr. : -'~h _hEh g =_ w _ r ! _ = _ = -. 2: ... g, n a G _~ T-1 - 4

• rt_, }

E +=tzj(z:- t1r g . 7, __4_#_i_t y a_. j- _ TJ- { E :-- ^ ^.. .i n- _f --* 27 14 : i -- ;__ gq 1 1 __+

• rt-i 2 :_t i r\\

- =_ -t r t n r.1:n i 1 1 1 4 i s.- - ; - - t __;__i_ _._1_. _.i . ___13 :4_._ ? 8 g '3" 2 -~ = =*==: - J+y! H - I i -i. IEmia i - - 13.:i * =- L r i i t :1_tt*

1_

..t: .= .i I;; t - :: ! }+ : E i i 2: 2 11: 2!I + __ _ *.. t .t t V I4 120 =. i . : !_=__} Q >

t-

_r z t ni-2:$'" F . ~~~ :1, ; 2rt ' _ t_--1 _l_'.; x_7 ' g' }. g-

==* =:=~t=_m:1.l.:::t.=_+tq_yt t 1 4 --- _ q -._.t

1 2

= - - - + 3 m __;__ j

y

+ - ; -; ,_~"e

• tt

== 1 : =t-+~ all i i - + 1Tt: t t:t = f --2 i__i i i-' 10 110 1-1 = _ _ L L_ ; __.4 4_: t Ett e

rdn:

t-+~f 1 1 r.tr ~ :p - - - 2:1.. -- r : _2__1.nt t-+ Ict~ . ; t_- t --t ' ' + 2:1 _r_ -

ri 3_;t

__; =1gg__2f; .;_ _ 7; ;;_;_; 7 _ t _r t .tt _ =_.

t=l_ rt-

. 24

_2 _.4-a m _a _. _.4_.m; ~ 1 g g 100 liHH) 10000 100000 1000000 Time After Accident (seconds) l i l Amendment 9 Benchmark Case Original FSAR Figure 14.5-10 NPSil Availability for RIIR and Core Spray System Figure 2 l 1

il I \\ l i[ O4. O35> $ $b [Wa4 Om I J 9 g O<. o3 2 UIwo Om .J 0 W>. w,, g$ n2O> *e CIWug TN Oa 2m O s nn ] }_. l+ +I T _ y r!t r { ,tf _ _. 7 I l . IgT t{t; _J . TT q}I -{

e. u M yg y 9

T q[fp! rp .{i iie a ne ' H.- ~ 7_ ( _ < j } 1 J J q lI g i + f1r ri.i _7 i' + _r 7}&_ ~ "I i7_ . jig +! .I

j I.)

gg f 3_g, Tt - ~ - ~ TfI a jr! -Iif _ 7T mo c +. Ti .yi li.(I'I T. [- n ' jl,l ll t 1 Mi j,., ,l, !{, i, ' t,4 J t I, + j 1 7 + - i,-j ' _ _ D a ', *,fI 7_7 a mo ' i - ,[ g } 7_ f' ) a tiI!tl Iji ti;}. .llj_ gq l7 . b 4 I u 1L v 7 y .ii3 i -tl r ]' W m* {l H I .,j - ~ S 3J dN 1!4J - - ~ 1 8 fC W mn ' r t_ pjl I ~ -]-l +q !; ts - ^q+ w[i ft 1 _t - _ j, - Fl4 + l {i7 j

I[t i i ;i

• }i4,rt

,l!;ij m= iii t!:!l;!{i;ij9t i,. i.{ i 4j . 'i r 'j vlt.t yt i,l '!.7 J [ j ij t'. t t ,+! 'i;jjt, ~ t, iil;.ij . ~ il. e ?.; tI, + ! t! ' j ,li l noc ' I4ftts i i i i l l j jt:, i t l j *

• l

,l j i>l: i. il -!4 i;;,. j ;! 'f;i{t; i ,jt,; l:i:ti.fj;{ ,. i ne C= -m.- } ~G_ 5_ >=

• ===E3g g 8_g3= w!C Zg C !.

E =, 3 g = ? E.< I g ; 3 g-Q$caEgem E, Vceo yEg ',gg w.9go n ry. <,,m$2o ] " g. 6y, 5

• I j

s CALCULATION CHEET PREPARED BY: DW Bostors Edieors CALC.# M-662 CHECKED BY: h REV. E3 DATE 25-NOV-97 SHEET 43 or 103 22 0 Based on Case (B) Suppression Pool Temperature Cune Figure 14.5-7 20 65 F Seawater Temperature Suppression Pool 160 1 emperature T l y lx S I 150 Containment Pressure C I with Design Basis { $ 16 i L @ ge @ l % ay --- 140 2 a n 2 s k c. Margin E E gn V e 130 [ c ^3 f ? Containment Pressure &2 E with Leakage R 5 ?VDay E _ _. j L gy Contamment Pressure 120 ~5 C' for CS l' ump NPSIIR E .5 in _{ 110 Containment Pressure g j 100 l 1 6 90 00 01 1.0 10.0 100.0 1000.0 Time After Accident (hours) Figure 14.5-10 NPSil Availability for RHR and Core Spray Pumps After a DBA-I OCA Figure 4 9

CALCULATION SHEET PREPARED BY:

• PPH-

& Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET if OF 103 20 RHR Pump Margin .'d.1%/Dar Leakage / il i .i j < @ 5%/ Day Leakage 15 -{ f ll s O ',l ..l l %g n CS Pump Margin l 3,e I" ~ ~ ^ ~ - - ~ ~ ~ ~ 41 IWDay Leakage f 4 vs ). W SWDay Leak' age i 5 5 . -.. ~... -. - -. ,1 I i ~ Based on Case (B) Suppression Pool Temperature Cunc Figure 14.5-7 3 65'F Scanater Temperaturc O 7 0.0 0.I 1.0 10 0 100.0 1000.0 Time After Accident (hours) t Figure 14.5-13 NPSil Margin for RIIR and Core Spray Pumps After a DBA-LOCA Figure 5

CALCULATION CHEET PREPARED BY: D H- & Boston Edison CALC.# M-662 CHECKE0 BY: REV. E3 DATE 25-NOV-97 SHEET 4f OF 10'$ 26 190 Based on Suppression Pool Temperature Cune Figure 14.5-17 j 24 75'F Scanater Temperature i; Suppression Pool Temperature

22 l

170 C -d j 1 e, E 20 .i - -Containment Pressure, gg y [ l uith Design Basis j t i Leakage 'd I WDay b g Margin {' Leakage @5%fDay-150 $" ~ I IX y Ej 16 -/, / = 140 2 .E E i Containment Pressure 3 k Il for CS Pump NPSilR ~ ~ ~ - - ~ ' ~ ~] ~ ~ ' ~ ~ ~ ~ ~ ~ ~ ' I30 $ r 12 i - -V 120 Containment Pressurc j for RIIR Pump NPSIIR I10 10 f x 100 0.0 ol 1.0 10.0 100.0 1000.0 Time After Accident (hours) FSAR Figure 14 5-18 NPSil Availability for RHR and Core Spray Pumps Aller a DBA-LOCA Figurc 6

CALCULATION SHEET PREPARED BY: D )4 Mon Edison CALC.# M-662 CHECKED BW REV. E3 DATE 25-NOV-97 -SHEET K OF 103 20 RHR Pump Margin j -d ISVDay Leakage ';/ I l - -/--lR 5tVDay Leakage IS .l-l .:j / l y 5 i CS Pump Margin ^ h ,l 4R liVDay Leakage j_ o g + TJi ft 55UDa.v Leakage 7. 3 _..d Based on Suppression Pool Temperaturc Curve Figure 14.5-17 75'F Scanater Temperaturc 0 0o nI 1.0 10.0 100.0 1000.0 Time After Accident (hours) Figure 14 5-19 NPSil Margin for RHR and Core Spray Pumps After a DBA-LOCA Figure 7

CALCULATION SHEET PREPARED BY: Pbif- & Boston Edison rAh CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 47 OF 103 50 s 45 1 Minimum NPSHA with Zero Containment Leakage 1 i l t' 1 j I i l 40 d l I i 4 1 8 l .2 'E i i 4 35 -d =- 2: t 5 I 30 - NPSHR for Core Spray Pump ] I I I i 1 + i 4 = = =

= = NPSHR for RHR Pump i + + 25 l - - - -J--- 4 Pc Based on Nitrogen.\\ lass = 16,315 lbm 20 120 130 140 150 160 170 180 190 200 Suppression Pool Temperature ('F) Initial Conditions: i Drywell 150*F. 80% RH.1.3 psig.132.000 ft' l Wetucti 85'F.100% RH. O psig. 124.500 ft' ( Figure 14.5-9 Total NPSH Available at Maximum Flow Figure 8 i l

CALCULATION SHEET PREPARED BY: PDFF & Boston Edison CALC.# M-662 CHECKED BY:.M REV. E3 DATE 25-NOV-97 SHEET 48 OF fo3 Talite 12 - Containment Pressure Availal>Ie fa 1%/ Day Leakage Rate - 65 F Seawater Temperature Lookup Eq 15 Eq 16 Eq 17 Eq 18 Eq 19 Time Tp Tp Psp ma,u. c) nus JT Mt* Pc (seconds) ('F) ( R) (psia) (Ibm /sec) (n/a) (Ibm %c) (sec) (Ibm) (psia) 128.8 $dx M 2.150 l _ _j j _f 16.315 15.25 j_ 5MM M i 2.150.j 0 00052 J, 0.102 0 00047 { 100 l 16.315 15.25 I28 8 I "". 200 131.8 591M 2.329

0 00052 {

0.102 0.00047 100 }~ 16.315 15.49 ~ D3.[ 5931 2.414

0.00061 0.110 0 00055 200 16.315 15 61 400 13 T.7 j

593.7 { 2.453 j 0 00(165 0.114 0.00059 200 16.315 J 15 66 600 j 400 ] _ 16.314 15.85 IINN) 135.9 595.9 j 2.598 0.00067 j 0.116 0 00060 i g j 2tHH1 141 3 l 601.3 i 2.984 ! OlHN)73 } 0.122 03)0065 1000 } 16.314 16.36 4000 148 3 608 3 3.568 i 0 (HH)35 0.139 0.00075 2000 } 16.312 17.10 i 6t H.H1 153.7 613 7 4.068 ! 0.00099 0.164 0.00085 2000 16.311 17.71 10000 l60.7 620 7 4T8f2 [ 0 Oii10Q 0.185 T00092 4000 _ 16.307 18 t12_. ~ 14000 164 5 624 5 5.275 ! u.tK)120 ! 0.217 0.00098 4000 16,303 19.16 2000 16.101.__j 19 32 16tHHI 165 7 625 7 5 419 000125 l 0.236 0.00101 l 20f H)0 166 4 6261 5.514 0 00126 3 0242 0 00102 4000 16.297 19.43 j 240tH 166 2 n2<. 2 5 48:; o00127 0.246 0 00102 4000 16.291 l 19 40 16.287 j 19.22__ 100t >0 165 0 625 n 5 341 ii tHil27.j 0.245 0 00102 6000 35000 163 6 623 6 5 168 i 0.00126 l 0.239 0.00101 5000 j 16.282 19.01 4tWHHi 1620 j 622.0 4.972

o 00124 1 0.232 0.00100 l 5000 16.277 18.77 ntHHHi 154 0 614.0 4.103 0.t K)121 {

0.224 0.00099 } 20000 16.257 j 17.71 j ~ 300tHi 146.0 (.06 0 33M f o tH1109 [ 0.188 0.00092 l 20000 16.238 [ 1638 593 2 2.758 0 00094 ~ 0.156 0.00081 l 20(HK) 16.222 15.99 I(MH100 138.2 i [ 200(H 16.209 15.45 I2iMHHi 132.3 j 5921 2.360 OJKH)77 0.130 0.00068 140tHH) 127.5 587 5 2.079 O.00060 { 0.112 0.00054 i 20000 16.198 ! _ 15 05 15(HN)0 125 5 5M5 5 1.969 , 0110042 !_ 0.100 J 0AK)038 ! 10000 _j 16,194 j, 14.90 16001H1 1238 531 8 1.MMO O00031 0.095 0.00029 j 10000 16.191 14.77 180000 120 8 580 M 1.729 0 00018 ] _ 0.091 . 0 00017] _ 20(NH) 16.188 l _14.70 19f M H10 119.3 5791 1.658 01HHKM) J 0.083 J 0.00(H)0 [ 10000 16.188 Cl4.71 2tHNHHI ]18 0 578 0 l.60 l 000000 ! 0.079 l OJHN)00 ' 10000 [ 16,188 j 14.70 RHR/CS Calc 25-NOV-97 Fife = NPSH65.XLS Page 1 of 2

CALCULATION SHEET PREPARED BY: I'bh & Boston Edison CALC.# M-662 CHECKED BY: Mb 1 REV. E3 DATE 25-NOV-97 SHEET 47 OF lO3 Table 12 - Containment Pressure Available @ 1%/ Day Leakage Rate - 65 F Seawater Temperature Lookup Eq 15 Eq.16 Eq 17 Eq 18 Eq 19 Time Tp Tp thp ma c) mou JT Mt* Pc Iseconds) ( F) ('R n (psia) (Ibm /sec) (n/a) (Ibm /sec) (sec) (Ibm 1 (psia) i 2ltHMMI t 116.8 l 576.8 1.546 1 0.0(KKX) 0.076 j OJKXXX) 100(K) 16,188 14.70 [ I 22(HMM), I14.5' 574.5 l'.451 000000 0.070 0.00000 10000 ( l6.188 I 14.70 Il5[ 575 6 1.495 21mHHi ! ~ ~{0.00000 0.073 O.00000 10000 16.188 14.70 l i 24mHNI l 113.5 _j 571.5 l.41() L 0.0(MXX) [ 0.068 O f KKXK) j_1(xXH) l 16.188 j 14.70 250tHNI 112.5 j 572 5 1.370 { OJKKHX) { 0.066 { 03HX)00 10000 i 16,188 14.70

2MHH10 111.5 571 5 1.333

0 0(x4)0 1 0.064 J OTHK)00 100tK)

( 16.188 16.188 14.70 1 l 27(HHHi i10._7 570 7 I 301 o 00fK)0 l 0.062 j 0 0(K)00 10000 1 [ 14.70 28tHHHi 110.0 570 0 1.275 j O (XXKK) 1 0.060 l 0 00000 _ImHX)J 16.188 [ 14.70 29t H H HI 109.1 56') i I243 . 11:0000() j 0.059 1 0.00(X)0 }_10000 l 16.188 I 14.70 t i itHHHHi 108 4 l 568 4 1.217 ! 0 00mK) [ 0.057 0.(XX)00 l 10000 }_ 16.188 14.70 litHHHi 1078 5678 I194 ! 0 (KKK)0 0.056 C O(X)oo j 100(X) ! 16,188 14.70 ~ 12f M H H' 107 0 567 0 i If5 ) fl 000(x) 0.055 OJHXHX) l 10000 l 16.188 _j_ 14.70 110t H Hi 100 3 566 1 'J6 ti t HH H K) 0.054 i O tHHHH) 10mH) ! 16.188 14.70 1 f 0()53

O (HHH M).

IMHNI 16.I88 14 70 f 14 HHHi 105 8 St 5 S i 127 ti(HHHH6 1(HHH) 16.188 i 14.70 t ]f 03MHiOO 15t H H Hi 105 1 5651 1.105 0 0mHHI ' O.052 O WXKX) 1_10000 ! 16.188 ! 14l7U ] TNHHHi 104.4 564 4 l.083 0 (KHKK) 0.051 18t H M N) ; _ l(_)3.4_ 563 4 1.051 j 000000 i 0.049 1 0 00000 l 20000 1 16,188 5621 1.016

03XXXX) l 0.048 j 0 0mK)0 L 20m)0 l 16.188_

14.70 j JIMHHN) 102.3 14.70 5tHHHHI 97.5 l 557 5 0 880 0 00000 { 0.046 j 03)o000 J _100(MH) j_ _16.188 14.70 NHHHHI 94_0 554 0 0,791 0 0000() j 0.040 j 0.00000 l 10mM)0 1_16,188 j_ 14.70 l 7t H H Hin 91.4 551 4 0.729 0.00000 j 0.035 1 0 0(XX)0 10000() I 16.188 [ _ 14.70.__. 80tHH Hi 89 3 549 1 0682 t 03xXxx) f 0.032 } O mXX)0 f 100fRK) I 16.188 [ 14.70. l 1 0 030 ! 03KXX_K)4. 100000 ' 16.188 1 14.70 i 9f MH HHi 87.4 547 4 0 643 0.00000 ____j u 4 92iHHHI 87 0 l 5470 0 635 0.00000 j 0.028 ,l_ OJHKXH) [ 2fMHK) 16.188 j_14.70 J RHR/CS Calc 25-NOV-97 File = NPSH65.XLS Page 2 of 2

CALCULATION SHEET PREPARED BY: T)D W & Boston Edison CALC.# M-662 CHECKED BY: _ M, REV. E3 DATE 25-NOV-97 SHEET fo OF _ 103 Talile 13 - Containment Pressure Available @ 5%/ Day Leakage Rate - 65 F Seawater Temperature Lookup Eq.15 Eq 16 Eq.17 Eq IM Eq.19 Time Tp Tp Psp mu o nus JT Mt* Pc (seconds) ( F) ("R ) (psia) (ibm /sec) (n/a) (Ibm /sec) (sec) (Ibm) (psia) _ _ 4 __16.315 15.25 i 12M1_ j 5MM.M l 2.150 j 0.102 0.00234 100 j _16.315 15.25 128.8 i SMM M 2.l50

0.00258

{ 1(H) +

i. _ 16.315 1

15.49 j 200 131 8 591 M 2.129 i 0.00258 0.102 0.00234 100 16.314 15.61 400 133.l__ j 5931 2.414

0.00307 0.110 0.00277 200 l

600 133.7 593.7 2.453 0.00327 0.114 0 00294 }_ 200 16.313 15 66 10(H) 135.9 595 9 2 598 0.00335 0.116 0 00301 400 16.312 15.85 2(HH1 141.3 601 3 2.984 0.00364 0.122 0 00325 1000 16.309 16.35 l 1.56M ' 0 00427 l 0.139 0.00375 2000 16.301_ _ 17.09 4tHHi I48.3_,' 60M.3 3 68 H HI 153.7 613.7 1 4.068 . 0.00497 { 0.I64 j 0.00427 2000 j 16.293 17.70 10000 160.7 620.7 l 4.M22 i 000543 0.186 0 00458 4000 16.275 18.59 14(HHi 164.5 j 624 5 l 5.275 0.00597 0.218 0.00490 4000 16.255 19.11 16000 165.7 625 7 5 419 ' 0 00623 0.237 j,000503 2000 16.245 19.27 4 i 20000 160 4 6264 1514 o00610 0.243 000507 ! 4000 16.225 ! 19 37 1 24000 166 2 020 2 5 4MM o00634 i T24M ! o00508 4(H H1 10.204 19.32 ~ 1(HHHi 1650 625o 514 l o00632 g 0.247 J _000507 6000 j 16.I74 19.12 15000 161.6 j_ 623 6 5.16M 000623j 0.241 1 0.00502 5000 i 16.149 18.90 f 16.124 18 65 40000 162.0 [ 622.0 4.972 0 00612 _{ 0.234 0.00496 5000 [0.00599 j 0.226 g 0.00489 20000 } 16,026 17.52 NHHHI 1540 614.0 4.103 M0(HHI 146 0 j 606 0 1 161 l 0.00530j 0.190 [ 0.00445 20000 15.937 j 16.53 1(HHHH1 13K.2 i 59M 2 2.75M i 000445 } 0.159 j 0.00384 20000 15.M60 j _15.69 12tHHH1 132.3 5921 2.360 ! 0.00341 ! 0.133 1 0.00301.} 20000 15,800 l 15.12 140000 l27.5 SM7 5 2.079 i 000227 i 0.115 ! 0.00204J__20000 _ 15.759 L 14.70._J 15(HHH1 125.5 585 5 1.969 0 00014__j 0.102 l 0.00013 10(M)0 15.758 l 14.70 160000 123M 5M1 M 1.MMO 0 0(M)oo O.096 1 0.00000 10000 15.758 { 14.70 J I MIMHlo 120.8 5M0 M 1.729 0.00(HN) O.091 ! 0.00000 20(HM) 15.758 j _ 14.70.J .] 0 00000 j_ 0.083 0.0(XMM). 10(HH1 15.758 l 14.70 l'MHHHi l19.3 5791 165M 2t H H H)u llM O 578 t} l 601 0 00000 O.079 ! 0 0(MHK) 10000 ; 15.758 ] 14._70 RHR/CS Calc 25-NOV-97 File = NPSH65 XLS Page 1 of 2

CALCULATION SHEET PREPARED BY: WF & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET fl OF 103 Tal>Ie 13 - Containment Pressure Availalite @ 5%/ Day Leakage Rate - 65 F Seawater Temperature Lookup Eq 15 Eq.16 Eq.17 Eq 18 Eq 19 Time Tp Tp Pvp mi m c) maxs JT Mt* Pc (seconds) (*F) ( R1 (psia) (Ibm /sec) (n/a) (Ibm /sec) (sec) (lbm) (psia) 1.546 1 0 0(K)00 0.076 0.00000 10000 15.758 14.70 ~ 21(HHHI ) I16 8 576 8 t f 0.(KN)00 220IHto I i15A l 575.6 0.073 0.00000 10000 15.758 14.70 1.495 . 210iMH) 141 574 5 1.451

0 00000 0.070 0.0000()

10000 15.758 14.70 ~ l 24fMHM) 113.5 573.5 1.410 [ 0.000(M) ' O.068 0.00000 10000 j 15.758 14.70 25(HH10. _112.5 i 572 5 1.370 1 0.00000 0.066 0.00000 10000 l 15,758 14.70 ~ i .t ~ 1.333 0.00000 6 0.064 0.(KK)00 10000 15.758 14.70 111.5 571 5 l 260000 _110._7 l 570.7 .l 30I_ _ _ 0.000m) ] 0.062 0.00(XX) 10000 15.758 14.70 270000 i 2M0(HND i 110 0 570 0 1.275 0.00(KX) j 0.060 0.00000 10(HR) 15.758 14.70 29tHM H) 109.1 I 569.1 l.243 0 00000 l 0.059 0.00000 10000 1 15.758 14.70 3itHHHi 107 8 56M 4 1.217 i 0.00000 1 0.057 0.00(X)0 10000 l 15.758 14.70 Tt HHH vo. 108.4 l 4 567N 1.194 j 0.00000 ) 0.056 0.000 >0 10000j_ 15.758 14.70 12(H)00 ~ 107 0 5670 1.169 0 0tHHM) j 0.055 0 00000 1(xWM) _j 15.758 14.70 l iof M H) 106.3 566 1 1 146 O(HHHH) 0 054 j 0 00000 10000 15.75X [ 14.70 _j 15.75M i 14 70 140t HHi 105x 565x 1.127 H 0(Ht00 ;, 0.053 j 0 00000. j 1(HHH1 565l 1.105 0 00(KM) ; 0.052 1 0.(KKHM) J 10(RM) j_ 15.758 14.70 35tHN)0 1(J5.1 104.4 564.4 1.083

0 0mHM) 1 0.051 0.00000 J 10000 15.758 14.70 i 160t HM) i ~ 103 ] l 563 4 1.051

0.00(KX)

TMtHHH1 i f 0.049 0 00()00 20(HXI 15.758 14.70 j ~ y 15,758 14.70 l i 4tHHHHi l 102.3 562.1 1.016 - 0.00000 j 9.048 0.0000(), 20000 50t HH)0 97 5 557.5 0 580 0.00000 j 0.046 0.00000 1 10(xx)0 15,758 1.5.70 l 100000 15.758 14.70 1 6(HHHHI ' 94 0.j 5540 0.791 0 00000 } 0.040 { 0.0000 J0 _ 15.758 14 70 7tHMH)0 91 4 551 4 O_729 0.00000 ! 0.035 1 0.00000 ; 100000 St H H N10 89 3 5493 0.652 ! 0.005UI)] 0.032 ~ ~ I 0.00(K)0 100000 15.758 14.70 91NHHH1 87 4 547 4 0643 0.00000 I 0.030 1 0.(NxXM M 100000 15.758 14.70 9200(Hi 87 0 547.0 0.635 O (KHK)oj 0.028 l 0.0(MN)0 [ 20m)0 15.758 L 14.70 RHR/CS Calc 25-NOV-97 File = NPSH65.XLS Page 2 of 2 ,____...___m m. m 1

CALCULATION SHEET PREPARED BY: PN.E & Boston Edison CALC,# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 62 OF lo3 Table 14 - RIIR Pump with 1%/ Day Leakage Rate - 6C"F S-water Temperature Fl4 5-10 Lookup Lookup Eq 19 Eq.21 Eq.22 Eq 23 Eq 24 P, Req'd for NPSHA of Time Time Tp Density INp Pc Pgas llz list NPSHA 27 feet Margin (secs) (hours) (cF) (Ibnvil') (psia) (psia) (feet) (fect) (fect) (fect) (psia) (fect) Piotted Plotted I i i Plotted I l Plotted l ' on Hg 4 on Fig 4 ( _ _ _ _ __.___ _ _ on Fig 4 on Rg 5 ,\\ j 100 0.03 128.8 bl.57 2.150 15.25 30.63 12.5 3.20 39.9 9.72 12.9 _j l 2tH) 0.06 13I M : 61.52 2.329 15.49 30.81 12.5 3.20 40.I i. 9.89 I 3. I j 400 l 0.1 l._j_131.1 j 61.50 2.414 ! 15.61 30.89 12.5 3.20 40.22 _ 9.97 l 13.2 j 600 ! 0 17 ! 133 7.' 6149 _2_.453 ! 15.66 30.93 12.5 3.20 40.2 [ 10.01 l 13.2 4 135.9 ; 61.45 2.598 {.15 85_ r 2 ..... p 31.06 12.5 4__3.20 J,,40.4 ,_10.15 j 13.4 _ 0 28 10tHI 2000 0.56 141.3 61.35 1 2.984 ! 16.36 31.39 12 5 l 3.20 40.7 10.53 ( _ 13.7_. 2_ ._ _3_. 20 41.1 1 11.09 j 14.1 17.10 - 12.5 4f MH) 1.11 148 3 61 22 i 3.568 l N H H1 1 67 151 7 61 12

4.06M '. ___. } 31.82 l

~ a _ _2. 5 l' 3.20 i 41.4 I_1.58 14.4 32.15 1' 1 17.71 i t t ot HiO 2.78 160 7 <,o 9M 4 M22 18 62 ; 32_.59 12.5 1 20 41.9 12.32 I49 32 82 12.5 3 20 42.1 12.76 15 1 14tHHi 1 89 164 5 s.o on 5275 19.16 i 12.5 i 42.2 1250 15 2, _. j INHH1 4.44 165 7 on.MM 5.419 19.32 _ 52 89- ~ ~ ~ ! 3 20 1 20000 5 56 j 166.4 60 M6 ! 5.514 ; 19.43_ !_ 32.93 12.5_j 3.20 1 42.2 13.00 {_ _ _15.2 24(HH) 6 67 j 1(>h.2 60 M7 j 5_488 ; 19.40 l 32.91 12.5 [ 3.20 _j_42.2 j, 12.97 L 15.2 [ 42.1 12.83 j _15.1_) 3t WHH) U3 165 H l 60 M9 i 5 341 [ _19.22 [ 32.82 }_ 42.0 ]t_ 12.5 j 3.20 l 35(HH) 9.72_ ; 161 6 60.92 ! 5.168 i 19.01 l 32.72 12.5 ! 3.20 12.66 l 15.0 j 4fHHH) 11.l] ; 162.0 j 60.95 l 4.972 i 18.77 ! 32.61 12.5 l 3_20. __! 419 _ [ _ _12.46 _j _14.9_ l 60t HHi 16 67 1540 61.1I l _4;ioi l 17.71J 32.06 12.5 j__3 20_j _41.4j __ 11.61 14.4 __s__8_n _ 10.89 j 13 8 1 40 4_ _3.20 01 27 3.361 ; 16 78 ! 31.53 12.5 Mt H H H1 22.22 1460 4 m IIH H H H) 27.i8 13M 2 61 41

2.75M j l_5.99J 31.02 12.5 j_ 3 20j. 40.3_i _ l0.31_

,,13.3 _ j 12tHHHi 33 33 132.3 61 51 } 2.360 15 45_ _ l 30.64 { 12.5 j_ 3.20 39.9 j 9.92 j _ l_2.9__ l 140(HH) 18 M9 127.5 61.59 2.079 15 05 i 30.33 ( 12.5 j. 3.20 39.6 j_ 9.65 l2.6 _ } s RHR/CS Calc 25-NOV-97 File = NPSH65.XLS Page 1 of 3

CALCULATION CHEET PREPARED BY: WW & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET f7 OF 103 Table 14 - RIIR Pump witti 1%/ Day Leakage Rate - 65 F Seawater Temperature F14 5-10 Lookup Lookup Eq.19 Eq.21 Eq 22 Eq.23 Eq.24 P, Req'd for NPSHA of Tune Time Tp Density Psp Pc Pgas IIz Hsl NPSHA 27 feet Margin (secs) t hours) ( F) t ibm /ft'l (psia) (psia) (fect) (fect) (fect) (fect) (psia) (fect) 12.5 _j f50000, 41.67 { J25 5 } 61.63 l 1.969 14.90 30.21 12.5 3.20 39.5 9.54 j i ' 16tH)00 : 44.44 1 123.8 1 61.65 j l.K80 14.77 30.10 12.5 3.20 39.4 9.46 [ 12.4 _j i f IKtHHHi 50 00 f ' l'2ii 8 61.70 1 1.729 14.70 30.27 12.5 3.20 39.6 9.31 } 12.6 190000 52578 i~U9.3 61.72 l 65M 14 70 J 30.43 12.5 3.20 39.7 9.25 12.7 118.0. 61.74 1.601 14.70 1 30.55 12.5 { 3.20 l ~ 39.9 ~~~ 59~ l [ 20tHHM) 55 56 }' 9.19 5M.33 U6x f 61.76 ! l.546 14 70 30.67 12.5_}_ 3 20 _j. 40.0 9.14 13 0 !210000 220000 6 I.1 I I15 6 ; 61.78 1.495 l 14.70 30.78 12.5 3.20 l 40.1 9.09 13.1 24HHin ' 63IM9 114.5 I 6130 1.451 y) 30.87 ~ 'I5[ 3 20 [ 40.2 { 9.05 13.2 ~~ f 24fMH)0 ' i 9.01 13.3 66 67 113.5 ; 61 81 1.410 l 14.70 J 30.96 [ 12.5 3.20 J 40.3. 250000 69.44 112.5 i 61.82 1.370 ' 14.70 L 31.05 J 12.5_._ 3.20 _j 40.3 8.97 13.3 26t H HHI 72 22 l I 1,5 61 XI lW I4T70 ! 31.13 j 12 5 3.20 { 40.4 8 93 13.4 270t H Hi 7; 00 110.7 61 x; ! ml 14.70 3I 20 12 5. 2 20 40.5 8 90 'I3.5 I j ~ II 25 ] 12.5_ { 12tf _; 40 6 _ 8.88 13 6 2SlHHHi 77.7X 110.0 61 86 1 275 14.70 i 29tH HMl X0.56 109.1 61.87 1.241 14.70 31.32 12.5 13.20 ; 40.6 8.85 i 13.6 4 30(HHH) X3.33 1(JK 4 j 61 SX _ l.217 14.70 31.37 12.5 l 3.20 j _ { 13.7 40.7 8.82 310'H Hi M6Ii 107.M ! 61.89 1.194 14.70 31.42 12.5 ! 3.20 j ~ 40.7 [ 8.80 l 13.7__ i ~ 12.5 I 3.20 ! 40.8 } [ 8.78 13.8 } [ 1.169 14.70 31.48 3 l320000 MM M9 til7.0 61.90 3.20 ] 40.8 } 8.76 13_S 33fM100, 91 67 106.3 ; 61.91 j _ _1.146 ; 14 70_ j 31.53 12.5 1 t { 3 20. _j 40.9 j 8.74

__13.9 140000, 94 44 { 105.K 61.92 l _ l.127 j 14.70 31.57 12.5

{. 8.72 13.9 40.9_j _ 105.1 61 93 j l.105 j 14.70 31.61 12.5__ 4 _ 3.20._ ' 350000 97.22 14.70 31 66 [ l2.5_}_ 3.20 41.0 8.70 [ _ 14 0 40000 It Hl.00 l 104.4 61.94 1.081 j. 1 3xlHH)0, 105.56 103.4 ; 61.95

1.051 14.70 j 31.73

_ 12.5j 3.20 41.0 8.67 _l40_ 4 400000 111.11 102.3 61.97 I.016 ' 14.70 l 31.80 12;5_ _ 3.20 j 41.1 8 63 t 14.1 RHR/CS Calc 25-NOV-97 File = NPSH65.XLS Page 2 of 3

CALCULATION SHEET PREPARED BY: Wd Soston EdisOM CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET Ff OF 103 Tal>Ie 14 - RilR Pump with 1%/ Day Leakage Rate-65 F Seawates Temperature F14.5-10 Lookup Lookup Eq 19 Eq 21 Eq 22 Eq.23 Eq.24 P, Req'd for NPSHA of Time Time Tp Density 15p Pc Pgas Hz Hsl NPSHA 27 feet Margin (secs) t hours) ( F) tibnt ft'l (psia) (psia) (feet) (fect) (fect) (fect) (psia) (feet) / . 5(H HH.HI ! l38.89 { 97.5 j 62.03 0 880 14.70 32.03 12.5 3.20 _ j 41.4 8.50 14.4 ,J ' NHHHN) ; 166.67 I 94.0 i 62.07 0.791 14.70 32.27 12.5 3.20 { 41.6 _ 8.42 14 6 j 71M NMM1 i I94.44 91.4 62.10 0.729 14.70 32.40 12.5 3.20 41.7 8.36 14.7 80(HMH1 j 222.22 89.3 62.12 I 0.682 14.70 32.49 12.5 3.20 41.8 8.32 14.8 _[, 0.643_ f_ 14.70 l 32.57 I 2.5 3.20 41.9 8.28 14.9_ j 91MMNW) 1 250 00 87.4 62.I5 8.27 l 14.9 j 0635 } l4.70 32.59 12.5 3.20 _ j _ 41.9 920tHM1 i 255 56 { 87 0 l 62.I5 1 P RHR/CS Calc 25-NOV-97 File = NPSH65.XLS Page 3 of 3

CALCULATION CHEET PREPARED BY: PDH- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET ST OF 103 Talile 15 - Core Spray Pump with 1%/ Day Leakage Rate - 65 F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq.21 Eq 22 Eq.23 Eq.24 P Reg'd for NPSHA of Time Time Tp Densit) Psp Pc Pgas liz Hsl NPSHA 29 feet Margin Isecs) Ihours) FF) (Ibm /ft') (psia) (psia) (fect) (fect) (fect) (fect) (psia) (fect) l l Plotted l l Plotted Plotted Plotted l \\ on Fig 4 'j ~ l on Fig 4 on Fig 4 " on Fig 5-~ . _0.7 7 ~ 10.22 I 15.25 30.63 12.5 _2.38 i [ 100 0.U3' ~ 12x x.' 61.57 2 150 4 11.7 2.___ 61.52 2.329 15.49 30.81 12.5 2.38 J' 40.9 l 10.40 11.9 200 0 06.. - - _3 I N 1 i i 400 j 0.11_. _[ 133.1. 61.50 2.414 _15.6_ _1_ 30.89 12.5 _ __2_.3 8_ _. 4_1_.0. a 10.48 r.12.0 __ i 4 f300 i 0._17. _ _. _1_3 3.7 ' 61.49 . _2.453 _15.66 _ _ 30.93 12.5 2.38 41.0 i 10.51 12.0 { w y 135 9 61.45 2.598 15.85 31.06 12.5 2.38 l 41.2 10.65 i 12.2 i ItHHI ! 0.2_8_ c L 2000 0 56_ L _41.1 61.35 2.984 16.36 31.39 12.5 2.38 1 41.5 ! I1.03 i 12.5 i 1 a + 4 i 17.10 31.82 12.5 __ _2_ _3 8 I 41.9 ! 11.59 1 12.9 i 61 22 1 3_.568 ! 4fHH1 l 1.11 9 148.1 4 4 a 151.7 61 12 i 4 06M i 17.71 32.15J _12.5_ 2.38 l 42.3 ' 12 08 { 13.3 j 6t H NI 1.67 1 It H100 2 7x 160 ? no 9M 4 X22 iK 62 32_.5_9 ! 12 5 2 38 ~ 42.7 12.82 13.7 m 14000 3 M9 164 5 60 90 5.275 19.16 32_.82 i 12.5. 23M 42.9 13.26 13.9 . + lotHin 4.44 + 165.7 603M 5.419 19.32 ! 32.89 12.5 2.3M l 43.0 J _13.40 14 0 J 60 x6 5.514 [ 19.43 [ 32.93 12.5 2 38 j 43 0 L_13.49 l 14.0 l 20000 5.56 166.4 l 24000 ' 6 67 { 166 2 60 M7 5.488 19.40 32.91 12.5 2.38 j 43.0 1 13.47 j __14.0_ 13.9 M.33 {1650 ; 60 S9 5.341, 19.22 32.82 12.5 2.38 42.9 [ _ _13.32 i 3 TMH 10 j j 1 19.01 32.72 12.5 2.38 42.8 l 13.16 I 13.8

t.. _163.6 6t t92

.! _ 5_ 168 35000 9.72_ a i I 32.61 12.5 2.38 l 42.7 l 12.96 13.7 i j 60.95 1 4 972 l _18 77 ' 4f HH10 I 1. I 1 , 1620 __L i 6t H HHI 16.67 i 154.0 61.1I 4.103 ; 17.71 } 32.06 12.5 2.38 l 42.2 L'._ 12.12 13.2 i } ~ ~ g 8t H H H1 22.22 i 146 0 61.27

3 361 l 16.78 1 31.53 12.5 2.38,

~ 12.6_ y i _41.6J _II.39 _ lot H H10 27.7M ; 13M 2 61 4i j 2 75M i 15.99_ [ 31.02 12.5 ] 2.38 i 41.1 i 10.81 12.l_.J .8 10.43 11.8 j 12t H HHI 33.31 1323 61.51 2.360 15.45 i 30 64 12.5 l 2.38 i 40 w _a ..- 2 127.5 61.59

2.079 15;05 [ 30.33 12.5 l 2.38 I 40.5 10.15 I 1.5 i

140000 1M 89 i RHR/CS Calc 25-NOV-97 File = NPSH65 XLS Page 1 of 3 i i

CALCULATION CHEET PREPARED BY: Pb44- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 66 OF 103 Table 15 - Core Spray Pump with 1%/ Day Leakage Rate-65 F Seawater Temperature F 14.5-10 Lookup Lookup Eq.19 Eq.21 Eq 22 Eq.23 Eq.24 P, Reg'd for NPSHA of Time Time Tp Density Ps p Pc Pgas Hz Hsl NPSHA 29 feet Margin (secs) t hours) ( F) tibm/fth (psia) (psia) (fect) (fect) (feet) (feet) (psia) (fect) 40.3 [ _ 10.05 11.3 } 15tH100j 41.67_ j _125.5 j 61.63.j 1.969 j 14.90 l 30.21 12.5 2.38 j 11.2 ( 16tH100 l 44 44 { 123.8 i 61.65 1 880 j 14.77 j 30.10 12.5__2.38__ 40.2 _ _ 9.96. _ _

IXtHM10 50 00 j _ 120.8 f 61.70 1.729 14.70_j 30.27 12.5 2.38 40.4

_ 9.82 _ _ I I.4_ j 14.70 ] 30.43 _j_ 12 5 _ {_ 2.38 40.5 9.75 11.5 19tH100 52.78 119.1 ! 61.72 l.658

2(HH100 55 56 118.0 61.74 1.601 ! 14.70 l 30.55 12.5 2.38 40.7 9.70 11.7 4

] {y 12.5 2.38 40.M ] 9.64 .I 14.70 _l 30.67 [ II6.8 61.76 1.546 11.8 21tHM10 58 33 r l22tNHH1

61. I I 115.6 61.78 1.495 14.70 } 30.78

_ 12.5 2.38 40.9 9.60 Q l1.9 7 21t H M N) 61 M9 I14.5 61.80 1.451 14 70_ [ 30.87# _12.5 2.38 41.0 9.55 l 12.0 a 24tHHHi, 66.67 l 113.5 618 l 1.4 t o 14.70 ' 30.96 12.5 2.38 l 41.1 9.51 _ L12.1 25iHHH1 69,44 112.5 i (il M2 1.370 14.70 31.05 g.5_ _ 2;38_ j 4 l_.2 .94_8, { 12.2 _ 260t H M) 72 22 I i 1. 5 6I M4 i 111 14.70 1 31.13 12.5. 23M ! 41.2 9 44 i 12.2 270000 75 00 110 7 oI Mi ! 'o1 14.70 ! ~5l.20. 12.5 ! 2.3M 41.3 9.4 l 12.3 ~ + 2XIMHHi

77. 7M 110 0 b l M6 i 1 275 14.70

'5 i~.25 ! 12.5 2.3M 41.4 9.39 12.4 l.241 14.70 N I~3 I l I2.5 2.38 45'.4 9.36 [~f2.4 - ^ ~~ f 109.1 f 61.M7 291 H H HI MO.56 3(HMHN) l MT.31 ] 108.4 j (> l.XM 1.217 ; l_4.70__ 31.37 l 12.5 2.38 41.5 9.33 _ 12.5 _t > 310000 86.11 j 107 M 61.89 1.194 l 14.70 31.42 i 12.5 2.38 41.5 l 9.31 12.5 _ 32(M100 l XM 89 j 107.0 61.90 j 1.169 14.70 31.48 12.5 2.38 41.6 9.28___ C _12_6_ j 1 9.26 _ Q 12.6 j 1.146 l 14.70 31.53 12.5 2.38 41.6 33(HH)0 l 91 67 j 106.3 l 61.91 3 9.24 12.7 34t H91 ; 94.44. J 105.x ! 61.92 1.127 l 14.70 31.57 12.5 2.38 41.7 _j 31.61 12.5 2.38 41.7 j 9.22 l 12.7 15fMNN) 97.22 j _105. I 61.93 , 1.105 l 14.70 g 12.5 j _ 2.38, T 41.,8 _j 16t HM)0 100 00 l 104 4 61.94 ! 1.0M3 ; _ 9.20 _ { _ _12.8 _ ] 2 14.70.j 31.66 _f. IMiH M H) 105.56 ' 101 4 51.95 { l.051 41.8 ! 9.17 i 12.8 14 70 } 31.73 12.5 2.38 40t HM10 lll ]I l02) 61.97 l 1.016 14.70 L 31.80 } 12.5 2.38 i 41.9 i 9.14 i 12.9 RHR/CS Calc 25-NOV-97 File = NPSH65 XLS Page 2 of 3

CALCULATION CHEET PREPARED BY: ppF1- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET I~7 OF 103 Table 15 - Core Spray Pump with 1%/ Day Leakage Rate - 65 F Seawater Temperature F14.5-10 Lookup Imkup Eq.19 Eq.21 Eq.22 Eq.23 Eq 24 P Req'd for NPSHA of Time Time Tp Densit_s Psp Pc Pgas Hz Hsl NPSHA 29 feet Margin (secs) (hours) (*F) (ibm /ll') (psia) (psia) (feet) (feet) (fect) (feet) (psia) (feet) 5(HHHl0 13N M9 1 97.5 62.03, } 0.M80 { 14.70 32.08 12.5 2.38 J 42.2 L 9.01 13.2 6fHHH)0 166.67 94.0 62 07 0.791 14.70 32.27 12.5 2.38 42.4 1 _ _ 8.93 13.4 7(H HHH1 194.44 91 4 62.10 0.729 14.70 32.40 12.5 2.38 42.5 ~ 8.87 13.5 _ 1 KlHHHN) 222.22 89.3 62.12 0.682 14.70 32.49 12.5 2.38 42.6 8.83 13.6 92iHHH1 ! 255.56 l 62.I5 '} 0.643 14.70 32.57 12.5 2.38 42.7 8.79 13.7 9tMNNM1 250 (M.) 87.4 _ _ 2.7_ u 13.7 E7.0 i 62.15 i _0.635 14.70 32.59 12.5 2.38 4 8.78 RHR/CS Calc 25-NOV-97 File = NPSH65.XLS Page 3 of 3

CALCULATION SHEET PREPARED BY: D}} & Boston Edison CALC..# M-662 CHECKED BY: M REV. E3 DATE F LNOV-97 SHEET 56 OF 10 3 Table 16 - RIIR Pump with 5%/ Day Leakage Rate - 65 F Seawater Temperature F14.5-10 Lookup Lookup Eq 19 Eq. 21 Eq 22 Eq 23 Eq 24 P. Req'd for NPSHA of Time Time Tp Density Ps p Pc Pgas Hz Hsl NPSHA 27 feet Margin (secs) (liours) (*F) (Ibm /ft'n (psia) (psia) (fect) (fect) (fect) (fect) (psia) (feet) l Plotted l Plotted l Plotted Plotted } 39.9 y on Fog t i on Fig 4 on Fig 4 on Fig 5 _ 28 8 61.57 _2.I50 15.25 30.63 12.513.20_{ 200 0.06 131.M 61.52 I 2.329 I5.49 30.81 l 12.5 3.20 40.I L_12.9 9.72 0 03 100 1 j 9.89 l 13.1 ~ f 2.414 4tM) O 11 ~ T33.1 61.50 _j 9.97 13.2 15.61 30.89 12.5, 3.20 40.2 600 0 17 133 7 l 61.49 l 2 451 15.66 30.92 12.5 1 3.20 40.2 I 13.2 10 01 t i 1000 0.2M '135 9. 61.45 ! 2.598 15.85 31.05 12.5 3.20 40.4 10.15 l 13.4 2tH H) O.56 j[41.3 f 6115 21984 f 16.35 31.38 12.5 3.20 40.7 10.53 13.7 _ _ 1.1 [ l1.09 14.1 ! JIMMI 1.1 I [ _l48.3 j 61.22 l 3.568 l,17.09 31.80 12.5 3.20 4 { btHHi 1 67 l 151 7 61.12 4 06M j 17.70 32.11 _ ,12.5 3.20 41 4 l 11.58 l4.4 l 40000 2 78 160 7 < >0 9M 4 M22 iM.59 _ 3 2. _.52 12 5 i 1 20 t 4i M 12.32 14.M 15.0 I4tN)0 1 M9 : 164.5 bo 9a 5275 19.11 32.72 12 5 ' 3.20 42 0 12.76 ~ _f 15.1 10000 4 44 [ 165 7 60 MM j 5 419 1917_ 32.77 12.5 3.20 j 42.1 j I2.90 15.I 20t M10 5 56 166 4 60.M6 j _$514 l _19.37 32.73 12;5 3.20_ !

42. l l _13.00 3.25 l} 41.9[ ] _' 12.83 3.20 42.0 }

12.97 15.0 166.2 : 60 M7 l 5.488 i 19.32 32.73 12.5 i 24000 6.67 4 i M.33 165.0 60 89 5.341 f %I2 f30000 32.59 12.5 j l 14.9 15000 9.72 163 6 ; 60.92 5.168 ! 18.90 32.45 12.5 3.20 l 41.8 12.66 14.8 3.2'U-] _41.6 - IW ' ' f 18 65 f 41HiOO 11.'11 ' 162.0 f 60.95 12.46 32.30 12.5 4.972 11.61 13.9 154.0 61 1I 4,103 [ 17.52 31.61 12.5 3.20440.9 4 _ 10.89 ' 6t N H N) l6 67 ( 13.2 M(HHH) 22.22 ! 146 0 61.27 3.361 I 16.53 30.94 12.5 3.20 40.2 i 7 ~ 39.6_ f _10.31 ~ ' 12.6 ~~ ~ 1758 ' f ~l579~ 30.33 12.5 3.20 100000, 27578 [ ~l3M.2 I 61.41 29.87 12.5 {_,,3.20 j _ 39 2_ j 9.92 _j 12.2 ! 15.l2_ j 12tHMH) 33.33 l 132.3 61.51

2160

' 2.079 14.70 ; 29.51 ! 12.5 [ 3.20 ' 38 8 j. [ 11.8 127.5 61.59 9.65 140000 38.89 ' RHR/CS Calc 25-NOV-97 Fite = NPSH65.XLS Page 1 of 3

CALCULATION SHEET PREPARED BY:, T'l>tF & Boston Edison CALC.# M-662 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET f7 OF /03 Talile 16 - RilR Pump with 5%/ Day Leakage Rate - 65*F Seawater Temperature F14 5-10 Lookup Lookup Eq 19 Eq 21 Eq 22 Eq.23 Eq 24 P, Reg'd for NPSIIA of Time Time Tp Density Pvp Pc Pgas llz list NPSilA 27 feet Margin (secs) timurs) $ ('F) tilmvft') (psia) (psia) (fect) (fect) (fect) (fect) (psia) (fect)

I5tHHH) 41 67 l _.2}.5 l 6I63 1.969 j 14.70 j 29.75 l 12.5 3.20

[ 39 0 9.54 12.0 l16tHH)0l 44.44 j l_23 x j 61.65 j 1.380 1 14.70 { 29.94 12.5 3.20 j 39.2 9.46 12.2 14.70 30.27 12.5 3.20 J 39.6 J 9.31 12.6 llxtHHHi 50 0() [__120 8 l 61 70 i 1329 ; l 19tHH)0 52.7M l 119.3 ! 61.72 l 1 658 i 14.70 30.43 12.5 }_ 3.20 39,7__{ 9.25 12.7 j ! 2tHHHH) ! 55.56 118 0 i 61 74 i 1.601 ! 14.70 30.55 12.5 3.20 39.9 l 9.19 12.9 116.X. 6136 1.546 l 14.70 30 67 12.5 3.20 40.0 1 9.14 13.0 ! 210tHH) 58 33 ~ a 22 H H)O

61. I l_

115,6 617x j 1.495 i 14.70 30.78 12.5 3.20 a _40.I J 9.09 13.I 1 30.87 12.5 3.20 40.2 J _ 9.05 13.2 210000, 63.89 j _ l14 5 l 61 80 l 1.451 ! 14.70 L 24tHHl0, 66 67 ; 113 5 ; 61 81 j l.410 l 14 70._ 30.96 _y_ 12.5 i 3.20 40.3 l 9.01 13.3 250t H)0 69 44 ll2 5 til x2 l.370 ! 14.70 31.05 ' 12.5 I 3.20 40.3 8.97 } 13.3 3 20.' 40 4 3 93 13.4 12.5 260000 72 22 I11 5 61 x1 1.111 14 70 31.13 - 3 i 27t n H to 75 00 ! I10.7 ol x; 1.101 14 70 ' 31.20 i 12.5 : 3 20 40 5 8.90 13 5 4 + I. .25 12.5 i 3.20 j i 3.6 31 40 6 j 8 88 .j 250000 77.78 110.0 6i x6 t.275 14.70 29tHH10 l 80 56 109.i 6i M7

1.243 l 14.70 31.32 12.5 l 3.20 j _ 40 6,_[

8.85 J_ 13.6 it H H H)O M3.33 j__ { 14.70. 110000, S6.11 j _107 8 ; 61 89 1.194 l 14.70 3 31.42 _j 12.5 ( 3.20 j 40.7_}. _ j. 13.7 31.37 12.5 l 3.20_ j 40.7.j 8 82 j 1.217 108 4 61 xx 120000 x8 89 j 107 0 61.90 1.169 l 14.70 j 3148 ' 12.5 ] 3.20 j 40 8_j _8 78 [ _ 13.8_ j 8.80 { 13.7 i 31.53 12.5 .1' 3.20 [ 40.8 i 8.76 13 8 . _14.70 1 - 11tHHM) 91.67.!.. i 100.3 61.91 1.146 140000 ; 94 44 i, 1058 61.92 1.127 j 14.70 ! 31.57 12.5 3.20 j 40.9 ] _ 8.74 _ { .__.4 4 13.9 .] 150000 97.22 [ 105.1 61.91 l.105 j 14.70 _j 31.61 12.5 3.20 J 40.9 j 8.72 _ _ [ 13.9 160000 100.00 ' 104.4 ' 61.94 1.083 i 14 70 l 3166 g 12.5 3.20 { 41.0 ! 8.70 j_ 14 0 1x0"00 105.56, 1034 61.95 1.05I ; _14.70 J 31.73 L 12.5_ g _3 2(1_ ! 410 _ j 8.67 l 14 0 j 14.1 400000 III I1 102.3 6I 97 1 016 j 14 70 l 3180 j 12.5 L 3.20 l 41.1 i 8.63 RHR/CS Calc 25-NOV-97 File = NPSH65.XLS Page 2 of 3

CALCULATION EHEET PRGFARED CY: %)f ?) Boston Edison CALC.#, M-662 CHECKED BY: REV. E3 DATE 25-NOV-57 SHEET 60 OF 103 Talile 16 - RIIR Pump willi 5%/ Day Leakage Rate - 65 F Seawater Temperature Fl4.5-10 Lookup Lookup Eq.19 Eq 21 Eq 22 Eq.23 Eq.24 P, Reg'd for NPSHA of Time Time Tp Density Ps p Pc Pgas Hz Hsl NPSHA 27 feet Margin (secs) (hours) ("F) (thm/ft') (psia) (psia) (fect) (fect) (fect) (fect) (psia) (fect) ,j 14.70 l 32.08 12.5 3.20 41.4 8.50 14.4 97.5 62.03 _j 0.x80 5tHHKMt j,138.89 62.07__i ! 0.791 14.70 32.27 12.5 3.20 41.6 8.42 14.6 60f KK10 l 166.67 94.0 [372iI'j{ ~ ~ ~ ~ 3.20 41.7 8.36 14.7 7(NWKH) 194.44 91.4 62.10 0.729 14.70 32.40 12.5 41.8 8.32 14.8 M(HNNM) 222.22 89.1 62.12 0.682 14.70 32.49 12.5 . L 643 4 _I4.70 32.57 12.5 3.20 j 41.9 8.28 14.9 9(MNHM) 250 00, 87 4 ! 62.15 0 92tMKH1 255.56 j 87.0 l 62.15. L 0.635 l 14.70 32.59 12.5 3.20 J 41.9 8.27 _ 14.9 i 4 i 4 RHR/CS Calc 25-NOV-97 File = NPSH65 XLS Page 3 of 3

CALCULATION SHEET PREPARED BY: 'Pp)f- ~ & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET Q OF 10 3 Talile 17 - Core Spray Pump with 5%/ Day Leakage Rate-65 F Seawater Temperature Fl4 5-10 Lookup Lookup Eq 19 Eq.21 Eq.22 Eq 23 Eq 24 P, Req'd for NPSIIA of Time Time Tp Density 15 p Pc Pgas llz list NPS11A 29 feet Margin (secs) t hours) ( F1 (Ibnuft's (psia) (psia) (fect) (fect) (fect) (feet) (psia) (fect) l Plotted i I Plotted 1 ( l Plotted Plotted i I "" h # \\ I""I$8 A "" N # "" N 3 R .---_-L---_-. S C L IIH) 0 01 l 128 x i 61.57 _;150 15.25 30.63 l 12.5 [_ 2.38 40.7 1 10.22 11.7 2 2tH) 0 06 i 111 8 61.52 1 2.329 15.49 30.81 12.5 1 2.38 40.9 1 10.40 11.9 L + i j t 400 0 11 i 133 1 6I.50 _2.414 15.61 S.39 l 12.5 l 2 38 41.0 i _ _ _10.4 8 12.0 2.451 i 15.66_ 3<.W l 12 5 2.38 41.0 i 10.51_ _. 4 2 4-6t H) 0 17 133 7 6149 .i -. 1 12.0 1 f 135 9 _ ; _2.59x 412 j _10 65 _ { ltHN) 0 2x 61.45 ! 15.85 31.05 12.5 2.38 12.2 i 2f MHi 0 56 ' I41.1 61.35 ' 2.984 ' 16.35 t' 31.38 ! 2.5 8 11.03 l 12.5

n. _2_.3_8 I

41.5 1 .. g 4000 1.11 j 14x.3 61.22 . _ 3.56x _17119 j. 3180 12.5 l 2.38 j 41.9 11.59 12.9 a.t H Hi 1 67 153 7 61.I2 . 4.06x. 17.70 32.11 l 2. 5 l 2.38 I 42.2 12.08 13.2 l 10t Hl0 2 78 160 7 no 9x 4 X22 lx 59 32 52 12.5 21x f 12 6 IIx2 ' I16 14tHN) 1 R9 164 i f >0 90 E 2'i 19 II 32 72 12.5 21x : 42 x 13 26 13 x f 3177. l_2.5_ ; 21x . _2 9 j 13.40 _ 53 9 16tHto 4 44 165 7 60 xx 5 419 19.27 4 20t H H) 5 56 ! 166 4 60 x6 5.514 j 19 37.j 32.78 12.5 l 2.38 42.9 j _ 13.49 1 13.9 240t H) 6 67. 166.2 ; 60 x7 5.4MM 19.32 .1' 32.73._L 12.5 I~ 2.38 42.8 1 13.47 13 8 1 4 4 ,i 1 -+ 32.59 J 12.5 } 2.38, : 4 13.16 13 6 60 89 5.341 19.12 42.7__! 13.32 } 13.7.- 3t H HH1 M.33 165 0 1 35tHHI 9.72 I 163 6 60.92

5.16x

.! _18.90 _12.5_ r!2 38 32.45 _. _ p _2.6 _ 5 4 40000

11. I I 1620 l 60.95 l 4 972 ; 18 65 32.30 12.5 i 2 38 42.4 12.96 13 4 3

2.38,j_1.7 6t H HHi 16 67 1540 61 11 4 103 ; 17.52, 31.61 12.5 i _ _ { 41 l_ 4 12.12 12.7 Mt H M)O 22.22 146 0 61.27

3.361

_l6_.53 ! 30 94 12.5_ ( 2.38 __11.39 l _12._1. 2.38 i 40.5 i 10 81 11.5 ItHHHHI 27.78 13x 2 61 41

2.75M ' 15 69 I 30.33 [_ _12.5

' 2.38' [4T(I~ ^ 10.43' !~To ] 120t H N) 31 33 l'23 61.51 2.360 15Il2 f 29 87 j_ .l 2.5 14t H H10 18 M9 127.5 61 59 2.079 14.70 29.51 [ l_2 5__ ! 2.3x ! 39 6 10.15 j 10 6 i RHR/CS Calc 25-NOV-97 File = NPSH65.XLS Page 1 of 3 _____o

CALCULATION SHEET PREPARED BY: %ff & Boston Ettison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 62 OF /03 Talite 17 - Core Spray Pump with 5%/ Day Leakage Rate-65 F Seawater Temperature F14.5-lo Lookup Lookup Eq.19 Eq 21 Eq 22 l Eq 23 Eq 24 P, Reg'd for NPSHA of Time Tmic Tp Densit3 Ps p Pc Pgas Hz Hsl NPSHA 29 feet Margin o ecs) (hours) ("F tibm/f th (psia) (psia) (feet) (fect) (fect) (fect) (psia) (fect) 15(H H H 8 41 f_,7, Ll25.5 l 61.61 l.969 j 14.70 29.75 12_5 l 2.38_ _ ( 39.9 [ 10.05 10.9_ _ 6165 f.KMO I 14.70 29.94 12.5 j 2.38 40.1 l 9.96 11.1 _ 16f H H H1, 44.44 ! 123x,i 40 4 j, 9.82 11.4 IMIHHHi 50 00 l 120 M 61 To 1.729 ! 14.70 30.27 12.5 2.38 16 ! 14.70 30.43

12. 5___n 2.38 40.5 1'

9.75 11.5 l'NHHHt 52.7M i 119.3 61.72 ,i _ _. 5x 1 _ i _. 20tHHH) 55.56 ]18 0 61 74 { l 601 14.70 j 30.55 l 12.5 {__ 2.38 40.7 9.70 11.7 21tHHHf 58 33 1 I6.x 61 70 . i546 ._14.70 { 30.67 1 12.5 ! 2 38 40.8 9.64 11.8 22iHHH) 61.1I j i15 6 61 7K ~ 1.495 __I4.70 30.78 { 12.5 l 2.38 40.9 9.60 11.9 1 2itHHHi 61 89 j 114 5 61 Mo l.451 14.70 30.87 l 12.5 2.38 41.0 1 __ 9.55 12 O _ . _. 70 30.96 l 12.5 2.38 41.1 l 9.51 12.1 24'Hion 66 67 ^ 113 5 61.x1 ,i 1.410 14._. y p ~ ~~ ~ {[ 25t H Hio 6944 112 5 61 x2 1.170 i 14.70 3105 ! 12.5 2.3M j 41.2 9 48 12.2 I2.2 26'HHHi 72.22 III s v.1 xJ I.111 14.70 31.13 l25 2.3M 41.2 9 44 I 12 5 2.1M 41.3 9.41 1, 12.1

4. 3_1.20 2 78 Hlf Mt 75 00 110 7 ol x5

1. ;o l 14 70

...e 31.25 { 12.5 2.38 41 4 9 39 i 12.4 ) 2 xi H H >o 77 78 l io n e,l x6 1275 14.70 7 3 3 2'MHH10 Mo 56 109 i 61.x7 I.241 j _14.70_l 31.32 l 12.5 2.38 i 41.4 _ [ _ _ 9.36 I l_2 -l __ j 100000 M3.33 108 4 61 xx l 1.217 i 14.70 l 31.37 12.5 2.38 41.5 I 9.33 l 12.5 . a __. _9.3 _1 _ i. 12.5 _ llotHHI x6 I I [ 107 x 61 M9 1.194 14.70 1 31 42 12.5 2.38 41.5 120000 xx 89 107 o 61 90 1.169 14.70 j 31.48 12.5_ j _ 2.38 _ _ 41.6 i 9.28 I 12.6 i i 14.70 31.53 12.5 2.38,j 41.6 9.26 12.6 196 3 61.91 1.146 ; 11t H Hlo 9167 34rHHH) 94.44 { 105 x 61.92 1.127 14;70 31.57 12;5 _2 33 j 41] j_ 9.24 l 12.7 j 35f H H H) 97.22 g 105.1 61.91 1.105 l 14.70 31 61 l 12.5 _ 2.38 j _, 417 j _ 9.22 j__ _ I2.7 _ _ 9.20 16t H HHi 10000 104 4 61.94

I UST. 14.70 l 31.66 !

12.5 2.38 : p__12.8 _1 8 i 4 1... . g_ _ JIN Hlon iIl 11 1021 61 97 1.016 14.70 1 31 80 l _ _12.5 1 2.38 _j 9.17 i 12.8 3x0000 105.56 101.4 61.95

1.051 14.70 j 31.73 l 12.5 2 38 j 41.8 3

41.9 [ 9.14 _ ] _ _. l_2.9 j RHR/CS Calc 25-NOV-97 File = NPSH65 XLS Page 2 of 3

CALCULATION CHEET PREPARED BY: 'PD R gosfog Edison CALC.# M462 CHECKEDPV' REV. E3 DATE 25-NOV-97 SHEET OF 10 3 Table 17 - Core Spray Pump with 5%/ Day Leakage Rate-65 F Seawater Temperature F14 5-10 Lookup Lookup Eq 19 Eq.21 Eq.22 Eq 23 Eq 24 P, Req'd for NPSHA of Tinic Time Tp Densit) Ps p Pc Pgas Hz Hsi NPSHA 29 fect Margin (wes) (liours) ('F) (Ibm /fi') (psia) (psia) (fect) (fect) (fect) (fect) (psia) (fect) 5(HHHH) 138.M9 L 97.5 62 01 l _ 0. NMO 14.70 l 32.08 12.5 2.38 j_ 42.2 j_ 9.01 13.2 3 6 HHHH) 166 67 l 94.0 62 07 0.791 14.70 } 32.27 12.5 2.38 j_ 42.4 _{ 8.93 13.4 7(H HHHI l94.44 9 ].4 62 10 0.729 14.70 32.40 12.5 2.38 42.5 8.87 13.5 ~ 13.6 _ j M(HHHHI ; 222.22 ._ N9.3 62.12 0 6M2 14.70 32.49 12.5 2.38 42.6 8.83 i 87.4 62 15 0.643 14.70 32.57 12.5 2.38 42.7 _j_. 8.79 13.7

9(HHHH1 f 250.tK) 62.15 l 0 635 14.70 32.59 12.5 l 2.38 42.7 [ _ 8.78

_ 13.7 3 ! 92tHHNi { 255.56 37.0 l RHR/CS Cafe 25-NOV-97 Fife = NPSH65 XLS Page 3 of 3 =

CALCULATION CHEET PREPARED BY: 'PDJP & Boston Edison CALC.# M-662 CHECKED BY:, REV. E3 DATE 25-NOV-97 SHEET 64 OF lO3 Talile 18 - Containment Pressure Availalile @ 1%/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq 15 Eq.16 Eq.17 Eq 18 Eq.19 JT Mt* Pc Time Tp Tp Psp mtm c) maxs (secondo ( F) ("R t (psia) (Ibm / scc) (n/a) (Ibm /sec) (sec) (Ibm) (psia) j j i30.0J 590 0 2.2_2_3_ j j i6315 15.35 2.453 0(>0056 0.105 j 0.00051 312 16315 15.66 l I33,7 ] _ 593.7 1I2 _f 0.116 { 01H)060 245 _16315 16.19 557 139 5 j 599.5 2;M53 _ O 00()67 2.935 0.00032 0.133 0 00072 31 16315 16.29 140 6 l 600.6 5x8 619 141. 601.3 2.95X

_0,000R4 0.137 _ 0.00074 31 l 16315 16.36

{ 656 142 0 602 0 3 041 ! 0 00086 0.139 0.00075 37 16315 16 43 i 969 147.g j 607M j 3.521

0 00087 J 0.141 0.00076 313 16314 17.04 1.281 1521 612.1 3.916

! 0.00099 0.162 0.00085 312 16314 17.53 1.594 155.3 1 615 1 I 4.235 000106 0.179 0.00090 T 313 16314 17.92 ~~ ~ ^ __-[ 61M 0 f 4.520 OjEi!II ~ 0.192 00093 313 16314 18.26 1.906 158 O 2.219 1601 j 620.1 4.753 ! 0.00116 0.205 j 0.00096 313 16313 18 54 2.531 1620 6220 4 972 ~ 000119 0.214 1 0 00098 313 16313 } ~ 18 81 2.M44 1617 621 7 5 176 0 00122 0.224 ' 0 0m199 313 16113 j 19 05 1.156 165 4 62s a 5C 000124 0.232 0.00101 313 16112 19 30 I ~ l241 _{0.00102 311 _j 16112 19.52 0 1469 166.9 626 9 5 579 00t]I26. ! 1.7x l 168 2 628 2 5.749 0 00128 0.249 j 0.00103 j 313 i 16312 19.72 ~ 4.094 169[ 629 4 5 912 . 000130 0.256 0 00103 313 1631I 19.91 4.406 170 4 i 610 4 6.049 l 0.0013I,i 0.263 0.00104 313 163II 20.07 .a _ 5 ~ t 4.719 171.3 i 631.3 6.175 ! 0.00133 1 0.268 j 0.00105 313 16311 20.2 l 5.031 172 2 612 2 6 305 0 ( II 0.274 [0.00105 313 16310 20.36 5.144 173((_; 613 0 6 420 0.00135 _, 0.279 [ 0.00105 3!3 16310 J 20.49 20.73_ J 5.656 173.7 j 611 7 6 52_2 0.00136 ] 0.284 l 0.00106 j 313 16310] 20 61 _ 5.969 174 4 614 4 6 626 01K)l37 j 0.288 j 0 00106 j_ 313 16309 l 313 i 16109 j 20 B4 6.2X I 175.0 615 0 6.717 0.00137 ; 0.292 1 0.00106 6 594 175 7 635 7 6 X23 0 0013N 0.296 i 0.00107 j ~313 _ 1 16309 1 20 96 6.906 176.2 l 616 2 6.9{11 0 00139 0.300 _}_ 0.00107 313 i 16308 j 21.05 7.157 176.7 616 7 6 979 0 00139 0.303 1 0 00107 251 i 16308 l 21 14 RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 1 of 6 l

CALCULATION SHEET PREPARED BY: 9'b l4- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 6 OF 103 Talite 18 - Containment Pressure Availalile @ 1%/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq 15 Eq 16 Eq.17 Eq IM Eq 19 J 7' Mt* Pc Time Tp Tp INp muu c) mas beconds) ( F) ("R) (psia) (Ibm /sec) (n/a) (Ibm /sec) (sec) (Ibm) (psia) l 7.1 M8 l_76E ! 636.x 6.995 0110140 1 0.307 0 00107 { _31 l 1630M 21.15 _ 63M M t 7.315 0.00140 J 0.307 0.00107 }_ 1,845 L 16306 21.52 9.033 1_7M M_ j t 12.49M i 181.0 641 0 7.6M 1 j 0.00142 _i 0.320 0 00108 l 3,465 j_16302 21.93 __ l 15.M4M 182.0 6420 7.850 l 000145] 0.335 03)0108 I_ 3.350 16299 22.12 lM 642 3 7.903 0 00146 ] 0.342 0.00108 { _ 3,477_ L l6295 { 22.17 [ 19,325 ._ 2 3. { 22.924 182.2 l 642 2 7.MK5 ' O.00146 j 0.344 0.00108 1 3,599 16291 22.15 22 05 _ ] l 26.715 181 7 l 64I.7 l 7.799 ' O 00146 J 0.344 0.0010M { 3,811 16287 i 10.495 IMI e 641 0 7 681 0 00145 0.340 0.00108 l 3.760 [ 162M3 21.91 14.32M 180.1 1 640.1 7.52M 04x)l44 0.336 0.00108 3,M34 l 16279 21.73 3M. l l M 179 5 ' 619 0 7.34M O00144 0.330 0.0010M 3.790 i 16275 21.53 l ~ 0.00108 [ 5~M93 42.011 1775 637.7 7.15i , 01IO142' ~ 0.322 16270 l 21 28 15.91. 1765 616 3 6.916 ' 0 00141 1 0.314 0.00107 l 3.907 16266 ! 21.03 49.M69 174 3 6:4x 6 6M7 000119 0.305 ~il00I'Hi 1.952 16262 -i 20 76 i ~ ~ ~i ~ _ M6._' 0 0 00I06 4.012 Ib25M 20 50 G 1.MM I 171 3 v T; ; 6 461 0 0013M U.2M6 0.00106 ! 3.999 16254 20.25 57.850 171 M 611 M 6 246 000136 i 0.00134 i 0.277 0.00105 ! 4,118 16249 20 00 61.995 170.3 t 610.3 6 035 f 0 00132 l 0.269 10.001041 4,lK1 __j 16245 19.74 66.179 168 7 62M 7 5 817 70.369 167.2_ 627 2 5 61M 014!!30 ] 0.260 l 0.00103 }_ 4.191 16241 19.51 i 74.594 165.7 l 625.7 5.425 0.00128_[_ 0.252 l 0.00102 J _4.225J 162_36J l9.27 78.915 164 2 l 624 2 5.237 0110126 _ { 0.244 } O00101 4.321 j 16232 i 19.05 S1.272 162.8 622M 5 068 O00124 j 0.236 1 0.00100 4,357 1 16227 i IM 85 M 7.590 l61.{ { ~ 62I.4 4 503 OJJ0122 _ } 0.229 l Op0099 j. { _18.65 _. 4,318 16223 91.959 160.0 620 0 4.741 0 00120 1 0.222 1 0 00098.{ 4,3_69., 16219 _Ql8.45 61M 7 4.597 0001IM. [ 0.215 l OAm097 ; 4.355 _ { 16215_ L 18.27 96.115 158 7 i 100.721 157.5 617 5 4.466 0 0011_6 [ 0.209 j _ 0.0fK)96._[ 4,409 j _16210 _j _ _IM ll__ 16206 j 17.96 105.12M 156.3 6161 4.339 0 00114 i 0.204 1 0 00095 ) 4.405 ^ 109.611 155I 615 I 42i5 0 00lI2 ['Ei9F liHE)93 4.484 i6252_j__1[K0 RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 2 of 6

CALCULATION SHEET PREPARED BY: PDW & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 66 OF 103 Table 18 - Containment Presuire Available (d) 1%/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq 15 Eq 16 Eq 17 Eq 18 Eq 19 Time Tp Tp Pvp mtexx (a mins elT Mt* Pc (seconds) ( F) (*R) (psia) (!bm/sec) (n/a) (Ibm /sec) (sec) (Ibm) (psia) ! 114.124 154.0 1 614.0 l 4.103, j (Lt}0llo l 0.193 0.00092 4.512 J,16198 17.66 ! 118.662 153.0_j 61311 4 005 ' O.00108 j 0.188 0.00091 4,539 16194 17.54 151.9__{, 611.9 l 3 897 0.00106 0.184 0.00090 4.644 16190 17.40 1233 06 ; 4 I6186 17.29 , __.64 9 127.955 l 151.0 j, 6li 0 3 812 OJK)l04 0.179 0.00088 4 j 112.617 150 0 610 0 3.718 0 00103 ' O.176 0.00087 4.682_ _l6131 17.18 l 117.29x ; I49p 609 0 j 3 628 O00101 0.172 { 0.00086 4.662 16177 17.06 141.980 148.1 l 608.1 3.547 0.00099 0.168 0.00085 4.682 16174 16.96 3 460 OI)0097 0.165 0.00083 4,769 [ I6170 f 146.749 ,147.l],607.1 16.84 I 146.2 606.2 i 3.3x3 - 0.00095 0.161 0.00082 4,796 16166 16.74 l 151.545 ) j 156.333 14[5.1 ~ 3.307 I 0 00093 0.157 0.00081 4.789 16162 16.64 605 3 l000091 0.154 0.00079 4,823 16158 16.56 j 161.157 144.5 604 5 i 1.241 }, 4,844 _ { 16;47 _ 4.813 16154 165.970 143.7 l 601 7 3.176

000090 0.151 0.00078 16150 l

16 39 170.M l 4 142 9 602 9 1 112 0 tHHISM 0.149 0.00077 4 ,i 16.36 172 SOU 142 6

602e, 1 US9 0 (H HiS6 0.14(,

0 thio 75 ; 1.987 l 16149 _1 176.400 142.2 602 2 1.054 . 0000X5 0.145 l 0.jH1075 j_ 3.600 _ ! 16146 j_16.31 IS0JH)O 141 7 3.020 0.00084 0.143 }_0.00074 L 3,600] 16144 16.26 j . j _ 6017

181.600 141 3 l

6013 2.987 0.00083 0.142 0.00073 3.600 16141 16.22 000082 0.140 0.00072 3,600 16138 16.17 j I M7.200 140.8 } 600X 2.954 190.St H) 140.4 I 600 4 2.921 ! 0.00081 0.139 0.00071 3.600 16136 16.13 2.8(7 194.400 140.0[ 000080 0.138 0.00070 3.600 _16133 16.08 600 0 i 3 195.000 139.5 599.5 2.856 000079 0.136 0.00070 n 600 16131 16 04._j 201.600 139.1 l 5991 2 x24 0 00078 } 0.135 j 0.00069 3,600 16128 16 00 205.200 138 7 598.7 2.792 0.00077] 0.133 0.tKK)68 3.600 16126 15.95 20S.800 13M 2 5W 2 2.760 0110076 l 0.132 0.00067 3.600 _}_16123 i 15.91 212.400 137 F. 597h 2 729 0.00075 1 0.131 0J10066 3.600 j l6121 [ l5 87 _ 2163HHi !313 5971 2.699 0 00073 i 0.129 I 0.00065 3.600 i 16119 i 15 83 ~f 0._I28 l 0.00064_ _..35d N I6115 ~~ ^ l l5.78 219.600 Iin 9 596 9 2.668 000072 RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 3 of 6

CALCULATION SHEET PREPARED BY: PD Ff- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 47 OF 103 Table 18 - Containment Pressure Available rai 1%/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq 15 Eq.16 Eq.17 Eq.18 Eq.19 Time Tp Tp Psp mau c) m0AS JT Mt* Pe (seconds) ( F) ( R) (psia) (Ibm /sec) (n/a) (Ibm /sec) (sec) (Ibm) (psia) 136 5 j $96 5 2.638 ) 0.00071 0.127 0.00063 L3,600 l 16114 15.74 l 223,200 { 2.607 i 0.00070 0.125 0.00062 3,600 j 16112 15.70 226,800 l 136 O_ j 5960 j 230.400 l 135 6 595 6 2.578 ! 000068 0.124 0.00061 3,600 1 16110 15.66 ~ l234JMKl } b5 2' [ 595 2 j 2.549 0.00067 0.123 0.00060 _ _ 3,600 16108 15.62 i 237,600 134.7 594,7 2.520 t 03H)066 j 0.121 0.00059 3,600 l 16106 15.58 [ 241,2ito f }l[14.3~ 239I f000064 l 0.120 0.00058 3,600 l 16103 15.5i ~ ~ 594 3 l 244.800 l _133 8 j 593 x {462 j 0.00063 0.119 0.00056 j _ 3.600 16101 15.50 1 24M.400 1 133 4 1 593.4 i 2.434 i 0.00062 0.117 0.00055 3,600 16099 15.46 ! 252ilUO d1Ji 591 0 23U7' f 0.00060 _} 0.I16 0.00054 3,600 16097 I5.42 l 255.6tH) 132.5 592 5 2.379 0.00059 0.115 0.00053 _ 3,600 16096 15.38 l j 259,200, 132 1 5921 2.35,1 000057 0.I14 0.00051 3,600 16094 15.34 3 13 l 9 591 9 2 337 000056 0.113 _, 000050, 3,600 16092 15.32 262.KIMI 4 266,400 131.7 591 7 2 124 0 (HH155 i 0.112 0.00049 l 1.600 16090 15.30 270.000 131.5 591 5 2.3 I I o (HH154 0.111 0.00049 j 3,600 16058 15 28 273.600 131 2 j 591 2 2 298 0.00053 0.111 0 00048 { 3,600 J 16087 15.26 277,200 111 O_j 5910 l 2.285 0 00052 0.110 0.00047 ( 3,600 16085 15.25 0.00052 0.110 0.00047 3,600 16083 15.23 250 800 ' 130.8 590 8 2.272 ~ ! 0.00051 ~ 2.258 0.109 0.00046 3,600 16082 15I21 ~ ~~ 284.400 ; 130 6 i 590 6 2XM.000 ! 004 590.4 2.245 0110050 0.108 1 0.00045 3 600 16080 15.19 f 1101 f 590 2 2 135 0 tiUUF. 0.108 0.00044 3,600 Ll6078 15.17 291.600 295,200 129.9 589.9 2 219 > 0 00048 0.107 0.00043 3,600 16077 15.15 3 0 00047 0.107 0.00043 J 3,600._ 16075 15.13 298.800 129.7 589.7 2.207 j 102.400 129.5 589 5 2.194 0.00046 0.106 0.00042 ! 3,600 16074 15.11 4 306.000 129.3 5X9. 3 2.I81 0.00045 ; 0.106 0.00041 3.600 16072 j 15.09 109.600 129.1 589.1 2.159 0.0UO44 } 0.105 l 000040 f ~~3,600 15071 15.08 311.200 128.9 588.9 2.156 l 0 00043] 0.105 _ Of)(1039 [ 3.600 16069 15 06 116.800 12x 6 I 58x 6 2.144 0 00042 1 0.104 0.00038 1 3.600 l 16068 l _15 04, RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 4 of 6

CALCULATION SHEET PREPARED BY: DS & Boston Edison CALC. # M-662 CHECKED BY: _ REV. E3 DATE 25-NOV-97 SHEET $8 OF fo3 Table 18 - Containment Pressure Available @ l'A/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq.15 Eq.16 Eq 17 Eq 18 Eq 19 JT Mt* Pc Time Tp Tp Pvp m xx to mars a (seconds) ( F) (cR) (psia) i (Ibm /sec) (n/a) (Ibm /sec) (sect (lbm) (psia) OJKK)37 3.600 16067 { 15 02 j j 320.4f MI 12M 4_ j _ 588 4 2.131

o00041 0.103

_. 0.00036 3.600 16065 15.00 t l 324.000 l 128.2 j 588.2 2.1 I 8 l 000040 0.103 128 0 588 0 2.106 ! 0.00039 0.102 0.00035 3.600 16064 14.98 j l 327.600 f 2.(J94 ! 0 00038 0.102 0.00034 3.600 l 16063_j_ 14.97 311.200 127.8 587M 16062 14.95 f _ 3.600 0.00033 0.00037 0.10I j 334.S00 127 6.j 587.6 2.082 , 0.00035 0.101 l 0.00032 3.600 16061 14.93 31S.400 127.3 j 5M7.3 i 2.070 0 00031 j { 3.600 142.000 127.i j 587.1 2.0[K 000034 0.100 16060 14.91 ^ ~

0.00033 0.100 0.00030 3.600 16058 14.89 5K6 9 2.046 345.600 126.9 0.099 [0.00029 3.600 16057 14.88

! 149.200 126.7 ' 5X6 7 2.036 [ 0.00031 ~ 0.099 ~ E00028 ~~ 152.800 126 6 586.6 2.027' ! 0$00030 3.600 ' i 15056 14.87 f 03K)029 . f 586 4 160J H NI 12(e.2 SS6 2 2.()08 0 0(H)28 1 0.098 j _0.00026 j 3.600 16055 14.85 0.098 2 017 156.400 126 4 0.00025 j 3.600 16055 I4.84 tt,1.61HI 1260 5x6 0 1.998 000027 l 0.097 j 0.00024 ; 3.600 16054 14 M2 i 167.200 125.9 %49 l 989 0 tHHi25 l 0.097 ' o iH H)23 1.600 16051 ,? 14 MI ~ IO96 000022 3.600 16052 f 14 80 i 170.800 125.7 5x5 7 1.980 0 00024 0 ) ~ ~14f8 ~ f 3.600 16051 374.400 125.5 i 585.5 1.971 j 01K4)22 0.096 0.00020 17MJH M) 125 4 [ 585 4 1.962 l 0 00021 0.0 % 0.00019 l 3,600 16051] 14.77 3x t.600 125.2 585 2 i 1.953 ! 0.00019 0.095 0.00017 l 3.600 16050] 14.76_ 185.200 1250 l 585 0 1.944 ~ 0.00017 0.095 0.00016 1 3,600 16049 1 14.74 T SM. Son 124f 584.9 1.935 0 0(K)l5 ' O.094 J 00014 [~ 3.600 { 16049 l 14 73 192.400 124.7 584 7 1.926 0.00013 0.094 _j 0 00012 1 3.600 16049 14.72 i 396JH)0 124 5 584 5 1.917 0.00010 0.094 O.00009 I 3,600 16048 14.71 199.600 124.3 5x41 1.9(i3' O.00005 { 0.093 0.00005 l 3.600 _. 14.70 401.2tH1 124 2 5X4 2 1.899 0.00000 j 0.093 ! 03M)0'K) j 3,600 16048 ~ 14.70 _ I6048 406.800 1240 5S40 I M90 0.00000 0.092 ! 0.00000 1 3.600 16048 14.70 OJN)000 0.092 i ~II O(K)00 I 3,600 14.70 ~ j [I4 70~~ i 16048 410.400 l23.8 5M3 S 1.881 ~ 3191 N00000 3.500' f 15U8 [ 0 414.000 121.7 5x17 I 873 0.00000 RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 5 of 6

CALCULATION CHEET PREPARED BY: PI))(- & Boston Edison CALC.# M-662 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET 69 OF- [03 Talite 18 - Containment Pressure Availalile @ 1%/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq.15 Eq 16 Eq.17 Eq 18 Eq 19 Time Tp Tp Pvp man c) nws JT Mt* Pc (seconds) ( F) ( R) (psia) (Ibm /sec) (n/a) (Ibm /sec) (sec) (Ibm) (psia) 417.6tH) 123.5 5M3 5 l 1.864 0.00000 0.091 0.000(X) L 3,600 1 16048 14.70 421.200 123.3 SM3.3 i 1.855 0.00000 0.090 0.000(x) 3,600 16048 14.70 _ 424.8(N) 123.1 _j 583 I 1.847 0 00000 0.090 0.00000 3.600 16048 14.70 42M,400 ! 123.0 581.0 I.838 0.00000 0.089 0.00000 L_ 3,600 16048 14.70 432,000 l22 8 582.x 1.830 0.00000 0.089 0.00000 3,600 16048 14.70 i S I M.400 _120 2 j 5X0.2 1.702 0.00(xx) 0.088 0.00000 86,400 16048 14.70 l 604.8tM' _ i M 2_ _ j. 57M 2 1.610 0 tx)o00 0.081 0.00000 86,400 16048 14.70 l f _ I164_j 576 2 i 691.200 1.522 0.tNHRM) 0.077 0.00000 86,400 16048 14.70

777.600

_114.3_ 574 1 l 1.442 0.00000 0.072 0.00000 86,400 16048 14.70 x64.000 I i12.3 572.3 i 1.362 j 0 0(x)00 0.068 0.00000 [ 86,400 16048 14.70 RHR/CS Calc 25-NOV-97 File = NPSH75 XLS Page 6 of 6

CALCULATION SHEET PREPARED BY: 'PD}f- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 70 OF 103 Talile 19 - Containment Pressure Availalite @ 5%/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq 15 Eq.16 Eq 17 Eq 18 Eq 19 JT Mt* Pe Time Tp Tp Pvp m.a c) mm u (seconds) (*F) (*R) (psia) (Ibm /sec) (n/a) (Ibm /sec) (sec) (Ibm) (psia) 16315 15.35 { _I3"S. 59" U 2J2,3 j _ j __312 16314 15.66 312 j 133.7 591 7 2.453

0.00280 l 0.105 0.00253 i

557 139.5 i 599 5 2 853 f 0.00335 0.I16 0.00301 8 245 16313 16.19 585 ~i40 6 600 6 [955_. l 0 00408 _ ~ 0.133 0.00360 [~31 16313 16.29 l _ j 601.3 2.988 0.00420 l 0.137 j 0 00370 [. 31 ] 16313 16.36 619 141.3 656 142.0 6020 3.041 0.00428 0.139 0.00375 j 37 i 16313 16.43 607 x 3.521 0.00435 0 141 0 00381 1 313 1 I_6312 17.04 _ 969 l 147.8 1.2M 1 i 152.1 612 I t 3.916 0.00492 ] 0.162 0.00424 ' 312 163II 17.53 r 1.594 155.3_ _ j 615.1 4.235 0.00531 0.179 0.00450 313 16309 17.92 1.906 158 0 i 618 0 4.520 l 0.00557 0.193 0.00467 313 16308 18.26 2.219 I60 l~ 4'.735 1 0kSE' O.205 0.00480 [313 }_16306 18.54 620 1 1 2.531 162.0 6220 4.972 0 00594 0.214 I 0.00489 313 j 16305. 1 18 80 16103_j i9 04 2.844 161.7 621 7 5.I76 000607 0.224 0.00496 313 16102 ( 19 29 1.156 165.4 625 4 51x7 0 00619 0.232 0.00502 313 i 0.00631 0.241 0.00508 i 313 16300 19.51 _ ! 0.0063T (( 0.249 1.469 166 9 626 9 5.579 I 0.00513 l 313 16298 19.71 1.781 { _li>M 2_ 62x 2 Si749 313 16297 19.90 4.094 169.4 l 629 4 5.912 0 00649 l 0.256 0.00517 4 1 j 0.00656 [ 0.263 } 0.00520 g_ 313 16295 20.05 j 4.406 it0 4 { 610 4 6 049 611.3 6.175 0 00663 0.269 0.00522 i 313 16294 20.20 4.719 171 3 i 5.031 172i 612 2 6 305 0]Ei6T8~ 0.274 _ Oy0524 _ ]I}3[ __16252 _ 20.34 ] 5.344 173.0 631.0 6.42(I 0 00673_j 0.279 { 0.00526 313 16290 20.48 5.656 173.7 613.7 6.522 O (K)678 0.284 0.00528 313 16289 20.59 5.969 174.4 634 4 6 626 000682 _ 0.288 300530 i_ 313 _ ] 6287 20.71 6.281 l75() 615 0 6.717 0.00686 i 0.293 0.00531 ! 313 l 16285 20.82 6.594 I75 7 635 7 6 M23 0.0(Ky9!i j, 0.296 } 0.00532 [ 313 l__16284))O.94 _ 6.906 176 2 616 2 6 901 0.00694 j 0.301 j 000533 t 313 l. 21.02_. 16282 0 00534 251 i 16281 .i 21.11_ j 7.157 176 7 616 7 6.979 0 00696. 0.304 j i. RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 1 of 6

CALCULATION SHEET PREPARED BY: PDQ- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 7/ OF lO3 Tahic 19 - Containment Pressure Available @ 5%/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq 15 Eq 16 Eq 17 Eq 18 Eq.19 m As JT Mt* Pc Time Tp Tp Pvp mtsig to o (seconds) ('F) ( R) (psia) (Ibm /sec) (n/a) (Ibm /sec) (sec) (Ibm) (psia) 000699 0.307 0 00535 l 31 ] 16280 21.13 i

7. I MM i

176.8 [ 616 M 6 995 j i 0.00700 0.308 0.00535 {_ 1,845 l 16271 21.48 9.033 17M.8 j 63M M 7.315 181.0 j 641.0 7.6M 1 0 00710 0.321 j 0.00538 3,465 i !6252 { 21.88 12.49M i 15.84M 182.0 1 6420 7.M50 O.00722 0.336 0.00540 3,350 16234 22.06 l 19.325 ! IE2.i ~ 7.9U3 ! OI)0726 0.344 0.00541 l ~ 3,477 ~ 16i96 22.06 ~ 642.3 16215 22.10 f 22.924 I,82[ [j 642.2 7 M55 0 00727 0.346 01)0540 { 3,599 26.735 1 M 1.7_j 641.7 7.799 0 00726 j 0.346 0.00540 3.811 16175 21.95 10.495 181.0 1 641 0 7.681 0.00723 ~ 0.343 0.00539 3,760 16I55 21.80 14.32M iMO.I[ 640 1 7.528

O E1719 0.338 0.00537 1 3.834

. 16134 21.61 TM.IIM i79.0 639.0 7.34M ! 000714 0.333 0.00536 3,790 16114 21.39 42.0 l I l77.7 l 617.7 7.I37 f0.00708 0.326 0.00534 3,892 ~~~i6093 21.13 ~~~ 0 00700 0.317 0 00531 3,907 16072_ _ 20.86._ 45.9 l x 176 3 j 616 1 6.916 i ,.309 0.00528 i 3.952 16051 20.58 49.M69 1748 614 8 6 6M7 000691 l 0 51.MM I 171 1 611 1 6 461 o tH1682 0.299 i 000525 4.012 16010 20.30 1 57.MMn 171.M 611 M 6 246 000672 I 0.290 O00521 3.999 16010 20.04 I ~ ~ ! ~i9I7 f 0.282 it.00516 [ 4' ~,118 ~ ~~ ~ b l.99M 170.3 6301 6 035 0 00662 15988 0.00652 i 0.273 0.00512 l 4,181 l5967 J 19.50 ~ 66.179 16M[7~ l 628.7 5 M17 f 15946 19.25 70.169 167.2 627.2 5 618 i 0.09640 0.264 0.00506 1 4,191 ....t s L 74.594 165.7 i 625 7 5 425 O00629 0.256 0.00501 [ 4.225 ~} I5925 19.01 7M.915 164.2 624.2 5237 O00618 0.248 0.00495 1 4,321 l l'5903 18.77 ] ~ ~ Mt.272 162M 622M 5 068 0.00606 0.241 J 00488' 4.357_ [ i_5882 } IM[5_ ~ M7.590 161.4 621.4 4.903 0.00594 i 0.234 0.00482 i 4,318 l 15861 l 18.34_, 91.959 160.0 620 0 4.741 0 00582 ; 0.227 0.00475 j. 4.369 1 15840 l 18.13 96.315 i SM.7 6iM 7 4.597 000570 [ 0.220 01)0467 i 4.355 i 15820 i I7.94 100.721 157.5 617 5 4 466 0 00558 {_ 0.214 i 0.00460 l 4,409_ ; 15800_ { 17 77_ 105.12 M 156.1 616 1 4 139 000547 O.209 ! 0 00453. 4.405 15780 1 17.60 15760 l I7 43, ; O.204 o00445 4.484 109.6 I i 155.1 6151 4 215 000515 RHR/CS Calc 25-NOV-97 File = NPSH75 XLS Page 2 of 6

CALCULATION SHEET PREPARED BY: 93) W- & Boston Edison CALC.# M-662 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET 72 OF lo3 Talite 19 - Containment Pressure Available @ 5%/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq 15 Eq 16 Eq.17 Eq 18 Eq.19 Time Tp Tp Psp muu c) mars JT Mt* Pe (seconds) ( F) (#R) (psial (Ibm /sec) (n/a) (Ibm /sec) (sec) (Ibm) (psia) i I I 4. l_24 ; _54 0 J 614.0 4.103 j 000523 l 0.198 l 0.00437 i 4,512 15740 1 17.28 l 3 4 005 j 0.00512 [ 0.194 0.00429 [ _ 4.539 1

118.662 153 0 613 0 15721 17.14

! 123.306 151.9 611.9 3.897 l 0 00501 0.190 0.00421 j _ 4.644 15701 17.00 J l 127.955 15I.0 611.0 3.M 12 i 000489 0.185 0.00413 J 4.649 15682 16.88 j 132.637 150 0 [ 610 0 [ 3.718 ! 0.00478 l 0.182 0 00405 1 4,682 15663 16.74 l 117.29M t 1490 1 609 0 3.628 ! 0 00466 1 0.178 0.00396 4.662 15645 16.62 f 608.I 3.5j7 005454 0.I74 j_ 0.00387 ] ' 4.682 141.950 I4x I 15626 16.50 146.749 147.1 607.1 3.460 l 0 00443 l 0.170 { 0.00378 j 4,769 15608 16.38 151.545 146.2 606 2 l 1.383 000430 } 0.167 l 0 00368 j _ _4.796_{_ _15591 16.27 156.311 145 1 605 1 3.307 ' 0 00417 0.163 l 0.00359 I 4.789 15574 16.16 161.157 144 5 i 604.5 3.241 O.00404 0.160 0.00349 [ 4,823 15557 j 16.06 165.970 141.7 l 601 7 3.176 000393 0.157 _0 00339_ { 4.813 j 15540 { _ _15.97__ f, 6.154 l 000329 170.x la 142 9 602 9 1.I12 0001M0 4,844 j 15524 l 15 37 172.xini 142 6 v.02 v, t ox9 0 00167 i 0.152 ' 0 00319 1.9x7 t 15;lM i 15 84 l_O00315 I76.400 142 2 602 2 1054 o00362 l 0.151 I 1.6tMi 15507 15 7M 180AHH 141 7 601 7 3.020 0.00355 l 0.149 l 0 00309 3.600 15496 } 15.73 _ 601 3 i 2.987 0 00347 j 0.148 0.00302 3.600 15485 j 15 68 1S3.600 141.1 1 ! M7.200 140 8 600 M 2.954 000339 0.146 _ 0 00296 j. 3.600 __ 15474 15 63_ _ 190.800 I40.4 600 4 2.92_I l 0.00289 J 3.600 15464 15.58 0 00331 0.145 194.400, 140.0 6000 2.887 0 00322 0.144 0.00282 j 3.60() 15454 l_15 53 198.000 139 5 599.5 2.856 ' O.00314 ; 0.142 0.00275 ] 3.600 15444 1 15.48._ 201.600 139I 599l 2 824 000305 l 0.141 , 0 00167 L 3,600 j__15434 g_5.43_ _ l 205.200 138 7 595 7 2.792 0 00296 i 0.139 1 0 00260 ! 3.600 j 15425 15 38 i 3,600 j 15416Y 15 33 l f 0.00252_ { 203.800 13X 2 598 2 2.760 0 0U57' O.138 212.400 137 8 597x 2.729 0.002,77 j 0.137 [ 0.00244 ; 3.600 _j_ 15407_j. 15.29 216.000 137 3 5971 2.699 0.00267] 0.135 _j 000235,j_ 3.600 _} 15398 15.24 2I9.600 136.9 596 9 2 668 0.00257 j 0.134 i 0.00226 4 3.6(10 j 153W1_j, 15.19g RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 3 of 6 l \\

CALCULATION SHEET PREPARED BY: PD)F & Boston Edison CALC # ____ M-662 CHECKED BY: / REV. E3 DATE 25-NOV-97 SHEET 7J OF 103 Table 19 - Containment Pressure Availabic @ 5%/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq.15 Eq 16 Eq 17 Eq 18 Jg.19 m As JT Mt* Pc Time Tp Tp Ihp man c) o (seconds) ( F) ( R) (psia) libm/sec) (n/a) (!bm/sec) (sec) (Ibm) l (psia) 596 5 2.63M

0.00246j 0.I33 0.00217 l _ 3.600

{_15382 15.15 I 223.200 136.5 l 15.10 j 226.800 ! 1360 l 596.0 2 607 0.00235 1 0.131 0.00208 l 3.600 __p_ __1_5375 0.00223. 0.I30 0.00197 j 3.600 15368 L I5.06 _ {0.00211]4 _ 135 6 j 595 6 2 578 210.400 0.129 0.00187 { 3.600 15361 l 15.01 214.000 135 2_ _j 595 2 2.549 237.600 { 1341 j 594.7 2.520

0.00198 1 0.127 0.00176 _ _ 3.600 _ l_5155 { 14.97 241.200 ;

j 594 3 2 491 0.00184 { 0.126 0.00163 3.600 1 15349 14.93 134 3 ~ ~ f 0125 l 0.00150 ! 3.600 l5343 14 88 244.800 I l33A 1 591 M 2 463 O.00169 ~ 591 4 2 434 0.00153 l 0.123 7 00136 { 3.600 15339 14 84 T ', 248.400 ! 133 A' J ~ {000135 [ 0.122 0.00120 l 3,600 15334 14.80 l33IO. j 593 0 2.407 252.000 t 1 132.5 i 592 5 2.179 0.00115 j 0.121 0 00102 1 3.600 _,15331 14.76 255.600 l 1 259.200 ; _ _ j 5921 2.351 j 0.00090 j 0.119 0.00080 l 3.600 15328 14.72 132.l 262.800 131 9 591 9 2 137 0.00055 _j 0.118 0 00()49 3.600 { 15326 14.70 a 2< 6.400 131 7 i 591 7 2 124 0 00023 i 0.118 ! 0.00021 3.600 { 15125 14.70 270.ut H I 131 5 591 4 J ill o tHHH)0 k[.k l7 k5 f MMMM) 3.600 15125 } I4 70 591 2 2 298 0.t H H Hl0 l 0[116 ! 0 00000 3.68H) 15125 I 14.70 I 271.600 131 2 , 277.200 131 0 i 591 0 2.2M5 O.00000N 0.I15 j 0.00000 i 3.600 15325 l4.70 ~~ 5 _.4 t r 2MO.M00 1303 i 590M 2.272 0.00000 i 0.114 ! 0.00000 ! 3.600 15325 14.70 J m 234.400 130 6 590 6 2.258 0 00000 0.114 0.00000 L 3.600 L' 15325 14.70 l i a 0 00000 0.113 0.00(K)0 l 3.600 l 15325 l 14.70 2MS.(HHI 130 4 I 590 4 2.245 ' ~ 130 f_ ~!,' 590.2 2.252 0.00000 0.112 0.000fA) [~ 3.600 15325 14 70 291.600 _ _ _ + 12'.9f. j 5M9.9 2.219 0 00000_j 0.111 0.00000 l 3.600 15325 J4.70 295.200 29M.800 129 7 589 7 2.207 0 (HKM)0 j 0.1 I I ] 0.00000 i 3.600 15325 14.70 j 102,400 129 5 j 5M9 5 2.194 000000 ' O.110 l 000000 l 3.600 15325 14.70 j 206.0tHi 129 3 539.1 2.181 0.tHHX)0 0.109 _{ 0.00000 _ [. 3.600 __I_5325 14;70 j 309.600 129.1 5M9.1 2.169 0.00(KMJj 0.108 }_0.(!0000j 3.600 1532_5 _ I4 70 _ ] 313.200 128 9 583.9 2 156 0.00000 ! 0.108 ! 0.00000 ! 3.600 l _ 15325 14.70 _j T 16.800 128 6 5MM 6 2.144 o tMHH)] 0.107 ! 0.tKKK10 i 3.600 i 15125 14 70 RHR/CS Calc 25-NOV-97 File = NPSH75 XLS Page 4 of 6

CALCULATION SHEET PREPARED BY: PDF1- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 74 OF 10 3 Table 19 - Containment Pressure Available @ 5%/ Day Leakage Rate - 75 F Seawater Temperature Lookup Eq.15 Eq 16 Eq 17 Eq 18 Eq 19 m As JT Mt* Pc Tunc Tp Tp Psp ma c) o beconds) ( F) ( R) (psia) (Ibm /sec) (n/a) (Ibm /sec) (sec) (Ibm) (psia) 3,600 l 15325 14.70 120.400 ! 128 4 SXM 4 2.131 , 0 00tK)0 0.106 [ 0.00000 3 24.0(H) 128.2 588 2 3,600_j 15325 14.70 2.118 0 00000 0.105 0.00000 1 i 127.600 ' 128 0 i 58M 0 2.106 0.00000 y 0.105 0.00000 j_ 3.600 15325 14.70 _ . 131.200 ! 127.M j 587 M 2.094 . 0 0(xxx) ! 0.104 0.00000 3,600 15325 14.70 114,MtH1 127.6 ] 587 6 2.082 0.00000 j. 0.103 0.00000 3,600 15325 14.70 i j_l5325jl ( 153_25 14.70 _ 11M.400 ! 127.3 j 5M7. 3 2.070 0.0(HK)0 j 0.103 J 0.00000 3,600 3,600 14.70 342.000 ; I 27. I 587.I 2 058 l 000000 j, O.102 Q 00000, _ O00000 j 0.101 0.00000 3.600 15325 14.70 145.600 126.9 5M6 9 2.046 i 149.200 ! 126.7 f 586.7 2.036 I 0(HKW i 0.101 0.(KXX)0 3,600 15325 14.70 152.800 126.6 j 586 6 2.027 0.(Ei(EiU 0.100 0.00000 { 3,600 15325 14.70 4 0 00000 { 3,600 15325 14.70 2.00M ! 0.1MHK)0 }[,0.099 0.00000 ] 3,600_. _15325 _, 456.400 126 4 5M6.4 2.017

O00000 f

SM6 2 0.099 l4 70 160.(H Hi 126 2 161.6( H) I26 0 5Mo o I 998 0 0(HH)O O 098 0.00000 ! 3.600 15125 14 70 170.M00 125.7 585 7 1 980 0 tHHHin ' [0.09M { 0 00iH>0 3.600 I5125 I4 70 j 167.200 125.9 5M; 9 1 9X9 0 00000 I5325 14.70 O.097] 0.00(HH) 3.600 i 174.400 125.5 5x5 5 1.97I o O(HM10 0.097 0.00000 3,600 { l5325 14 70 ~~ ~ 17M.(H H) I"25 4 5M5 4 1.962 0.0UU50-~ 0.096 0.00000 3.600 l 15325 14.70 0.096 0 00000 3,600 l 15325 14.70 ~ 1X I.600 125.2 i 585 2 1.953 0.00000 ~ (l5325 185.200 i25 0 5x5.0 1.9I4 0 00000 0.095 0.00000 _ 3.600 14.70 3XX.M00 124.9 SMI 9 l.935 0.00000 0.095 0.00000 3,600 1 15125 14.70 g 192.400 124.7 5M4 7 1.926 0 0(H)00 0.094 0.00000 3.600 { 15325 14 70 3 0.094 l 000000 3,600 ( l5325 ~ I4.70 196.000 124.5 584 5 1.917 O 00(H)0 j 199.600 124.3 5M41 1.908 . 0 (HH)00 j 0.093 l 0.00000_[ _3,600 i 15325 j 14.70 403.200 124 2 5M4 2 1.M99 0.0iHH)0 j 0.093 _[ 0.00000,j 3/100_ { 15325 l 14 70 J 406.800 124.0 5M4 0 i M90 ti.00000j 0.092 ] _000000_t 3.600 i 15325 1. 14 70 J I I 15325 j 14.70 410.400 123.8 581 M i MMI 000000_j 0.092_j 0(J0000 j _3.600 414.t H Hi 123.7 5M1.7 1.873 0 00000 ! 0.091 i 0.tH)o00 3,600 15325 _ [ _ 14.70 _ RHR/CS Calc 25-NOV-97 File = NPSH75 XLS Page 5 of 6

- CALCULATION SHEET PREPARED BY; DS ~ & Boston Edison -CALC.# M-662 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET 7.7 OF 103 Tahic 19 - Containment Pressure Available @ 5%/ Day Leakage Rate - 75oF Seawater Temperature Lookup Eq.15 Eq.16 Eq 17 Eq.18 Eq 19 l Time Tp Tp FNp mm c) nws JT Mt* Pc (seconds) (*F) (*R) (psia) (Ibm /sec) (n/a) (Ibm /sec) (sec) (ibm) (psia) 4 37 9H' ! _123.5___[_ 583.5 i.864 0.00000 0.091 0.00000 3,600 1 15325 14.70 _123 3 J 583.3 1.855 0.00000 0.090 0.00000 3,600 15325 14.70 j 421.200 i; 424.8tNI l _123.1 j 583.1 l 1.847 0.00000 0.090 [0.00000 3,600 15325 14.70 1 428.400 ! 123.0 J_ 583.0 l.838 0.00000 0.089 0.00000 3,600 15325 14.70 432.tH10 i 122.8 j 582.8 i 1.830 0.00000 0.089 0.00000 3.600 { 15325 14.70 j . 702 0.00000 0.088 0.00000 86,400 ! 15325 14.70 518.400 120 2 580.2 l l 578 2 l 1.610 0.00000 0.081 0.00000 86,400 [ 15325 _j 14.70 604.800 l 118 2 g 691.200 116.2 _ ! 576.2 j l.52,2 0 00000 0.077 0 0(X)00 86,400 15325 14.70 0 0.072 0.00000 86,400 15325 14.70 777.600 1 I 4.3 1 574 3 1.442 fo.00000 iHXX)0 0.068 0.00000 _ 86,40 ]0 15325 14.70 864.(H NI I12.3 l 572.3 1.362 i RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 6 of 6

CALCULATION SHEET PREPARED BY: T>h t & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 76 OF 103 Tahic 20 - RilR Pump with 1%/ Day Leakage Rate - 75 F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq.21 Eq.22 Eq 23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Density 15 p Pc Pgas llz list NPSilA 27 feet Margin (secs) (hours) ( F) (Ibnt I)$ (psia) (psia) (fect) (fect) (feet) (fect) (psia) (fect) / Plotted l l Plotted l Plotted Plotted \\ on Fig 6 l j_ un Fig 6 l on Fig 6 on Fig 7 312 i 0.09 [ _133.7 l 61.49 [ 2.453 ._ 15.66 30.93 { 12.5?_g.20 40.2__,I _ 10.01 3 13.2 I, ' 12.50 3.20 l 40.6.[ 10.40 _ 13.6_ _ j 557 0.15 [_ 139.5 61.3M ! 2.851 16.19 j 31.28 5xx O 16 Ll40;6 1 61.16 ! 2.915 16.29 31.35 12.50 3.20 _j 40.6 { 10.48 13.6 i 619 0.1,7 [ 141_.3 l 61.15 2.988 16.36 31.39 l 12.50 3.20 ' 40.7 10.53 13.7 656 01H [._142. 0 ! 61.34 3.041 16.43 31.43 { 12.50 3.20 40.7 10.58 13.7 i 969 0.27 [ 147.8 l 61 21 3.521 17.04 31.79 12.50 3.20 41.1 11.05 14.I i 32JM 12.50 3.20 41.4 11.43 14.4 j f ~17.53l[ 92 32.26 } 12.50 1.251 i 0.36 l 152.1 ; 61 15 3.916 t ~ I 155 1 6109 4.235 3.20 41 6 j 11.74 l 14.6 , ' ~ l.594 0 44 1.906 0 51 l 15X 0 61 01 4 520 1M.26 [ _32 43 l 12.50 3 20. 41.7 12.02 14.7 ~ I 2.219 0 62 ; 160 1 < o 99 4 751 18 54 32.56 12 50 3 20 41.9 12.25 l4.9 2.531 0.70 j 162.0 t,0 9 5 4.972. 1M.81 32.63 12.50 3.20 42 0 $ 12.46 15 0 32.79 12.50 3.20 42.1 j 12.66 15.1 l { 19.U5 2.M44 0.79 [ l63.7 { 60 92 5.176 j 19.30 32.89 12.50 3.20 47.2 i 12.87 15.2 j ! 3.I56 0.83 ! 165 4 60 SM j 5.3X7 3.469 ; 0.96 [_ 166.9 l 60 85 4. 5 579 j _19.52 32.99 12.50 3.20 42.3_ j_ _13.06 [ 15.3 _j 3 19.72 33.07 12.50 3.20 42.4.[ 13.23 [ 15.4 j T.78 I ; 1.05 l 168.2 l 60 X2 j 5.749 j 5.912 19.9I 33.15 12.50 3.20 42.4 j j 13.38 [ l 5.4 i 4.094 1.I4 [ I69.4 60 80 4.406 1.22 i 170 4 60 78 6 049 ; 20 07 l 33.21 12.50 3.20_ J 42.5. } _ l 3.52_ [ 15.5 j f __ _171.1 ; 60 76 6.175 l 20.21 j 33.27 12.50 3.20 42.6 l 13.64 i 15.6 4.719 1.31 5.011 1.40 i 172.2 60 74 6.303 ' 20 36 l 33.33 12.50 3.20 42.6 j _13.77_ _, _ _15.6 y 5.144 ' I.4M j i73 0 60.72 ' 6 420 l 20 49 ] 33.38 12.50 [ 3 20 _ L 42.7_j 13 88 15.7 _J i 13.98 t 15.7 j 5.656 1.57 { I73.7 60 ? ! 6 522 20 61_ { 33.42 J 12 50 l 3;20 [ 42.7 5.969 1.66 ' 174.4 60 69 6 626 20.73 l 33.47 12.50 i 3.20 i 42.3 14.09 15 8 l RHR/CS Calc 2 -NOV-97 File = NPSH75 XLS Page 1 of 6

CALCULATION CHEET PREPARED BY: %H- & Boston Edison CALC.# M-662 CHECKED BY: Mjk REV. E3 DATE 25-NOV-97 SHEET 77 OF 103 Table 20 - RIIR Pump _with 1%/ Day Leakage Rate - 75 F Seawater Temperature F14.5-10 Lookup Lookup Eq 19 Eq 21 Eq 22 Eq.23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Density th p Pc Pgas Hz Hsl NPSIIA 27 feet Margin Becs) (hours) (*F) (ibm /Q'l (psial (psia) (fect) (fect) (fect) (fect) (psia) (fect) l 14.18 15.8 n.2M I.j 1.74 l75.0 j 60 6M ! _6.717 j 2_0 K4 33.51 [ 12.50 ( 3.,20 _ J _ 42.8_I _ 14.28 _15_.9 _. l 6 20.96 33.55 i 12.50 f_._ _3.20.. _ J' _ 42.9 1 6.594 ' l.M3 875.7 60 66 ... M 21 j L l L.20 t 42.9 J 14.36 15.9 3

6.906,

1.92 176 2 6065 l 6.901 j 21.05 33.58 12.50 _ ] _ 2.9_ } 14.43 _.l l 7.157 ! 1.99 176.7 4 15.9 60 64 [ 6.979 21.14 33 61 12.50 ( 3 20 { 3__.20 l 42,9 l 14.45 _15._.9 _ 4 i 7.1 M8 2.00 l 176M ', 60.64 ' 6.995 ; _21.15 33 62 12.50 4 . i 4 _ 43.0 _ { 14.76 16 0 J 3.20 , _.315 21.52 33.75 l 12.50 9.013 2 51 j 178 8 l 60 60 7 i 12.49M. 3.47 j 181.0 l 60 55 ' 7.681 21.93 33.88 12.50 l 3.20 3 _ 43.2 [ 15.12 16.2 l l J 16.2 15.M4M j 4.40 { 182.0 { 60.53 [ 7.850 [2.12 33.94 12.50 3.20 l 43.2 { _ 15.29 15.34_ j _ _ 16.3 j 19.125 5.37 { 182.1 l 60.52 l 7.901 l 22.17 33.95 12.50 3.20 43.3 22.924 6 37 1M2.2 l 60.52 ! _ 7.M85 ! 22.15 J 33.94 12.50 3.20 e 43.2 j 15.32 16,.2 _. j 3.20 43.2 15.24 16.2 i 2v.735 741 IMi 7 60 51 7.799 22 05 1 33.90 12.50 i in 495 x 47, IMI o no 5 s 7 6x t 21 91 33.M4 ! 12.50 I 1 20 43 I l'5 12 16.1 14.128 9 54 1Mo i on 57

7. 52x 21.73

~U.77 12.50 ) 3 20 43.I 14.97 16.I _f I A.80 16.0 f _7.34M { 21.53 33 6'i [ 12.50 { 3 20 j_ f f 3M.ll8 43.0 1059 179.0 60.59 j l_77.7 60,62 7.137 ! _21._28 33.60 j 12.50 3.20 42.9 ! 14.59 i 15.9 l 42.01I i iI 67 4 5."l x, 12.75 l76.3 60.65 6.916 j.2103 33.50 12,50 3.20 42.8 l 14.37 15.8 49.869 ' 13 85 I74.8 i 60 6M 6 6M7 j 20.76 33.40 12.50 3.20 i 42.7 ~ 14.15 _ 15.7 51.MM I 14.97 l _ g 173.3 l 60.72 [ 6 463 ! 20.50 33.29 12.50_ ! 3.20 ; 42.6 13.93 15.6 57.8M0 16 03 171.8 ! 60.75 i 6 246 ! 20.25 33.19 12.50 l 3.20 j 42.5 ! 13.71 15.5 _,f 15.4_ j 13.51 33.08 { 3.2_0__[ 42.4 } 32.97 [ _12.50 61.99M i7 22 ; 170.3 60 78 [ 6.035 1 _20._00 12.50_ j J20 l 42.3 j 13.29 i 15.3 66.179 1M 3M l 168.7 60 M i [ 5 817 [ 19.74 32.87 1 12.50 i 3.20 42.2.i 13 10 15.2 70.169 19.55 i 1_67.2 i 60 85 5 61M 19.51 a 15.1 l 74.594 20 72 I65 7 l 60 MM 5 425 l 19 27 j 32.76 j 12.50 l _ 3 20 l _42.1. { 12.91 _.19.05..!. 32.66 1 12 50 l 3.20 i _..i 12.72 15.0 t 42.0 7M.915 21.92 164.2 60 91 ', 5.237 i a _. - _ _ - 1 i 5.06x IM M5 j 32.5_6 _ ! 12.50 j _ 3.20 41.9 12.56 14.9 i S t.272 23 13 162M 60 94 RHR/CS Calc 25-NOV-97 File = NPSH75 XLS Page 2 of 6

CALCULATION SHEET PREPARED BY: 33)M- & BoMon Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 76 OF 103 Table 20 - RIIR Pump with 1%/ Day Leakage Rate - 75 F Seawater Temperature F14.5-10 Lookup Lookup Eq 19 Eq.21 Eq.22 Eq.23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Densit.s Psp Pc Pgas Hz Hsl NPSHA 27 feet Margin becs) t hours) (*F) (lbm/flh (psia) (pria) (fect) (fect) (fect) (fect) (psia) (feet) 87.590 24.33 [ 161.4 60 97 (_,4.903_ j 18.65 32.46 12.50 3.20 41.8 12.40 14.8 91.959 l 25.54 j _160.0 60.99 l 4.74I IM 45 32.37 12.50 3.20 41.7 12.24 14.7 96.315 ' 26.75 ' l_58 7 6I 02 j 4.597 I8.27 32.28 12.50 3.20 41.6 _ _ 12.10 14.6 100.723 27.9M 157.5 61.04 ! 4.466 18.11 32.19 12.50 {_ 3.20 41.5_ 1,_ 11.97 14.5 ,105.128 l 29.20 156.3 ' 61 07 4 339 17.96 32.11 12.50 3.20 41.4 { _ l1.84 14.4

109.611, 10 45 1551 61 09 j 4 215 17.80 32.03 12.50 3.20 41.3 11.72

{ 14.3 I1.61 14._2] 3.20 41.2 _ 14.2 [_3.20 g] 41.2

I14.124 11.70 154 0 j 61.1I i 4.103 17.66 31.95 12.50

( _ l1.52 I 1 x.662, 12.96 151 0 l 61.13 4.005 17.54 { 31.88 12.50 121.106 14.25 151.9 j 61 15 3.897 17.40 ' 31.80 _ 12.50 J 3.20141.1 ] 11.41 L I 4. '__ i 127.955 15 54 ! 15] O of 17 1 812. 17.29 31.74 12.50 l 3 20 ' 41 0 j 11.33 j 14.0 12.50 I ~ 3.20 '4 l'.0 l 11.24 14.0 f l50 0 ol 19 3 7iM 17 18 } 3167 ~ 112.617 16 M4 137.29x 13 14. 1490 ol 21 362x I7.06 i 31.60 12 50 3 20 ! 40 9 ! 11.15 13.9 IIIl7 l 3.8 ~ ~ '.53 i2 50 3 20.j. 3l 40.3 l 14 I.980 19 44 14M i o1.21 3.5> 7 16.96 146.749 40.76 ! 147.1 l 61.25 3.460 i 16.84 31.47 12.50 3.20 ; 40.8 _ 10.99 13.8 13.7 l 151.545 ' 42.10 { 146 2 j 61 26 j 3.381 j 16.74 j 31.40 12.50 3.20. J 40.7 . _ 10.91 _j_.13.6 _ 16 64 31.34 12.50 3 20 _ J 40.6 10.84

156.131 43 43 [ _145.3 j 61 28 j 3 307 j 161.157 44.77 [ 144.5 j 61.30 l 3.241 j 16.56 31.28 12.50 3.20 { 40.6 _. 10.78 j

13.6_ _ [ 165.970 46.10 [ 143.7 l 61.11 3.I76 i 16 47 31 23 12.50 3 20 J 40.5 10.71 [ 13.5 10.65 13.5 16.39 31.17 12.50 {_ 3.20 J 40.5. j 170.814 47.45 j 142.9 61.32 i 3.112 i 172.800, 43.00 j 142 6 61 11 L 3.059 16.36 31.15 12.50 {_ 3.20 J 40.5_ _, 10.63 i 13.5_ j 176.400, 49 00 l 142.2 o1 14 I 3 054 16.31 1 31.12 12.50 l 3.20 1 404._ { 10.59 l 3.4 180.000 50 00 ! I41.7 61 14 3.020 M.26 j 31.09 12.50 j, 3.20 _ j 40.4 10.56 l 13.4 1 I41.3 61.15 2 987 16 2_2 l 3106 12.50 [ 3 20.j 40.4 10.53 i 13.4 i K1.600 51 00 L IS7.200 i 52 00 i 140.M 61.36 l 2.954 16.17 ; 31.02 12.50 } ~ 3.20 i 40.3 10.50 l 13.3 . __ [~ 13.3 _ 30.99 l 12.50 [ 3 20 ~5.3 10.46 ^ 190.x00 53.00 ! 140.4 61.17 2.921 16 13 RHR/CS Calc 25-NOV-97 Fife = NPSH75.XLS Page 3 of 6

CALCULATION CHEET PREPARED BY: 1>2>tf- & Boston Edison CALC. # M-662 CHECKED BY: MM REV. E3 DATE 25-NOV-97 SHEET 77 OF 10 3 Table 20 - RIIR Pump with 1%/ Day Leakage Rate - 75 F Seawater Temperature F 14.5-10 Lookup Lookup Eq 19 Eq.21 Eq 22 Eq.23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Density Pvp Pc Pgas Hz Hsl NPSHA 27 feet Margin (secs) t hours) t F) (Ibm /ft') (psia) (psia) (fect) (fect) (feet) (feet) (psia) (fcet) ! 194.400 j 54 00 ! 140.0 i 61.3M 2.887 ! 16.08 30.96 12.50 3.20 40.3 10.43 13.3 I ~2.liS6 l 16.04 30.93 12.50 3.20 40.2 10.40 13.2 1 ~ ~~ I 198.000 ? 55.00 [ 139.5

61. 3M

~ j 201.600 ! 56 00 I l.51 61.39 2.824 16.00 30.90 12.50 3.20 40.2 10.37 _[ 13.2 ] .. _.792 _1._5.9_5 30.87 12.50 3.20 40.2 I 10.34 13.2 205.200 ' 57.00 133.7 61 40 2 i -y 1 g 30.84 12.50 3 20 J~ 40.1 i 10.31 13.1 20x.803 ' 5M 00 138 2 61 41 2.760 l 15.91 I 212.400 - 59.tMi . I 3_1. M ! 61.41 2.729 ! 15.87 ~ 30.81 12.50 3.20 } 40.1 T 10.28 ~~ ' 13. I ~ 1 + i i 61.42 .t 2.699 15.83 l 30.77 12.50 3.20 } 40.1 l 10.25 13 1 }'. 137.3 i 216.000 ' 60 00 __ t. 219.600, 61.00 136.9 l 61.43 i. 4 2.66M I_5.78 j 30.74 12.50 3.20 40 0 } 10.22 13.0 4 , 223,200, 62.00 136.5 l 61.44 2.63M 15.74 30.71 12.50 3.20 40.0 10.19 13.0 f l36.0 ~ 1 i I5.70 30.68 12.50 [ _3.20__ [ 40.0 10.I6 13.0 l 61 45 2.607 l226.S00i 61 00 { l15 6 ' 61 45 ! 2 578 15 66 ! 30.65 12.50 ! 3 20 ! 40.0 10 13 13 0 ! 210.400 64 00 ^ ~ 1 3.20 39.9 10.10 'l 2.9 I 2T4JHM) 65 00 135 2 61 46 2 549 15.62 30.62 l 12.50 i i 7 [_12.9 12 50 1.20 .t 3_9.9 1_0.0X 217.600, 66 00 134 7 nl 47 2.520 15.58, 30.59 1 , 241.200 ; 67 00 l 134.3 61.4 x I 2.491 15.54 I 30.56 12.50 ( 3.20 _{ 39.9_[ _. { l2.8 10.05 12.9 l244.800; 6M 00 [ 133.x { 614x j 2 462 15.50 f 30.53 12.50 3.20 { 39.8 _ _ 10.02 !+._12.8

4. 2.434 15.46 30.50 12.50 3.20 l 39.8 9 99

{ 133.4 61 49 , 248.400 ' 69 00 ' 255.600 71 00 [ 132.5 l 61.51 !' 2.379. 15.42 30.47 12.50 3.20 39.8 L 9.97 l 12.8 . 252.000 70 00 133 0 61.50 1 2.407 15 T 30.44 12.50 3.20 39.7 [ 9.94 12.7 _.t__ m _._39.7 l 9.91 j 12.7 l 132.1 61.51 l 2 351 ; 15.34 I 30.41 12.50 { 3.20 259.200 72 00 __w 15.32 30.39 12.50 1 3.20 l 39.7 I 9.90 12.7 j 262.S00 73.00.i _ 131.9 61 52

2. 337, 15.30 30.38

_12.50__l 3.20 l 39.7_ L 9.89 _i _ 12.7 _ -e 266.400 74 00 13I.7 61 52 . 2.324 . _{ L _ 12.7 _. _I_ 30.36 j 12.50 i 3.20 } 39.7 9.87 I31.5 61 53 i 2.3 I I 15.28 270.000 75 00 30.35 l 12.50 ; 3 20 ; 39 6 ; 9.86 6 12.6 271.600 76 00 131.2 61.51 2.298 15.26 ~ I 30 33._+{ ' 1_2.50 .....- -. 20' 4 T. 39 6 ; 9.85 12.6 4 277.200 77.00 131.0 01 5; 2.2x5 15.25 i + y. _ _ 2xo.x00 7x(H) 130.x 69 54 2.272 15.21. 30.31 ! 12.50 l 3.20 39 6 i 9.84 l 12.6 RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 4 of 6

CALCULATION SHEET PREPARED BY: PDM- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 80 OF 103 Table 20 - RIIR Pump with 1%/ Day Leakage Rate - 75 F Seawater Temperature FI4.5-Io 1.ookup Lookup Eq.19 Eq 21 Eq.22 Eq.23 Eq.24 Pc Req'd for NPSHA of Time Time Tp Density thp Pc Pgas Hz Hsl NPSHA 27 feet Margin (secs) t hours) ( F) (Ibm /Ili (psia) (psia) (fect) (fect) (fect) (fect) (psia) (fect) i JM4.400 1 79.00 1 130.6 61.54 [ 2.258 ! 15.21 30 30 {_ 12.50 J 3.20 39.6 i 9.82 [ 12.6 28x.(HH) 80 00 i30 4 61.54 2 245 4 15.19 30.28 12.50 3.20 39.6 I 9.81 12.6 291.600 ; Mi 00 i ~ 6155 2.232 f 15.17 30.27 12.50 3.20 39.6 l ' ~ 9.80 " ' ~ ~ l30 2 12.6 295.200 ! x2 00 I l2U.9 61.55 I 2.219 ! 15.15 30 25 12.50 3.20 39.6 9.78 ~ ~{ 12.6 ~ j 298.800 M3 00 i 129.7 61.55 2.207 15.13 30.23 12.50 3.20 l 39.5 9.77 i 12.5 4 -t 4 39.5 9.76 1' 12.5 302.400 X4 00 1'. 129.5 ; 61.56 i 2.194 ! 15.11 30.22 l 12.50 4 _ 3.20 t_ 306.000 85.00 f 129.3 61.56 2.181 I 15.09 30.20 12.50 3.20 39.5 9.75 l 12.5 i _ f _ 12.5 F 120.1 61.57 2.169 i 15.08 l 30.19 12.50 3.20 39.5 9.74 309.600 86 00 1 s L 1 111.200 ' x7I00 .t 128 9 61 57 l 2.156 , _ _15.06 30.17 12.50 3.20 39.5 9.72 12.5 i 316.800 xx 00 i 128 6 61.57 2.144 ! 15.04 30.16 [ 12.50 [ 3.20 ] 39.5 9.71 12.5 320.400 M9 00 12x 4 n13x 2 Ill 15.02 30.14 j 12.50 l 3 20 ' 39.4 9.70 12.4 i f 9'69 l'2.4 i [io.13 ! 12'.50 1 20 39 4 124.000 90 00 12x 2 al ;x 211x 15 00 _ _2.4 I 3 20 39 4 9.68 127.600 91 00 123 0 oI <x 2 100 14 9x j _ 30.1I_ L 12.50 ; 9.66 p _ 12.4 _ 311,200 92 00. 127x 61 59 2 094 [ _I4.97 j 30.09 '_ I2.50_ _3.20 j _ 39.4 J 134.X00 9300 127.6 61 59 l 2.082 i 14.95 30.08 12.50 3.20 ! 39.4 9.65 12.4 t _14.93 30.06 _12.50 __3.20 1 39.4 1 9.64 12.4 , 118.400 94 00 127.1 61 60 2.070 J. i w. i [ _2.058 ; 14.91 { 30.05 12.50 3.20 l _ 39.3 l ,' I26.9 61 60 2 046 14 89 j 30.03 l 12.50 l 3.20 ! 39.3 j-__ 9.63 __ 12.3 342.000 95.00 12'7.1 ; 61 60 t 12.3 _ 9.62 345.600 96 00 _o r 9.61 , _12.3 l I4 88 30.02 l _12.50g 3]O j,39.3 j _ 149.200 97.00 i 126 7 61 61 2.036 152.800 9x 00 ! 126 6 61 61 2.027 ' 14 87 30.01 l 12.50 { 3.20 _j, 39.3 [ 9.60 12.3 j 14.85 l 30.00 l 12.50 i 3.20 39.3 j _ 9.59 12.3 i 356.400 99.00 126 4 61.61 2 017 t 126 2 61 61 2.00s 14 84 i 29.99 j 12.50 1 3.20 39.3 { 9.58 12.3 160.000 100 00 161 600 101.00 120 0 6162 1.99X 14.82 i 29.98 ! 12.50 3.20 39.3 i 9.57 i 12.3 3 20 i 39.3 !. U6~ f ~ ~II.3 ) 1418[1] 29.96 T 12.50 ~ 367.200 102.00 l 125.9 6162 I.9X9 170.800 103.00 125 7 61 62 1.980 14 80 ! 29.95 l 12.50 L 3 20.! 39.3 i 9.59 _12.3 l Page 5 of 6 RHR/CS Calc 25-NOV-97 File = NPSH75.XLS

CALCULATION SHEET PREPARED BY: Pbf}- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 81 OF 103 Table 20 - RIIR Pump with 1%/ Day Leakage Rale - 75 F Seawater Temperature Fl4 5-10 Lookup Lookup Eq 19 Eq.21 Eq 22 Eq.23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Density Pvp Pc Pgas Hr. Hsl NPSilA 27 feet Margin (secs) t hours) ( F) (Ibm /0') (psia n (psia) (fect) (fect) (feet) (fect) (psia) (fect) l04.00 14.78 29.94 12.50 3.20 39.2 i. 9.55 L _ 12.2_ l 37 8.400 j. _ l_25.5 61.61 L1,.971 j 14.77 29.93 12.50 3.20 39.2 9.54 12.2 ]j 1.962 ! 17M.000 ! 105.00 125.4 61 63 1 ! 3x1.600 [ 106ltH] 61.63 i 1.944 l 14.74 l 29.91 12.50 3.20 I ~ 39 2 j

9. 5 ".

~ 1272 1.953 i 14.16 1 29.92 12.50 J 3.20 l 39.2 9.53 12.2 125.2 61.63 - TX5.200 107.00 125 0 ; TXX.800 f 108 00 ~ [~i335 ! 14.73 29.90 12.50 3.20 l 39.2 9.51 12.2 l24.9 61.64 , 392.400 109.00 124.7 l 61.64 I.926 14.72 29.89 12.50 3.20 { 39.2 9.50 12.2 796,tHH1 ; I10.00 124.5 ! 61.64 1.917 ~ 14.71 29.87 12.50 3.20 } 39.2 9.49 12.2 ~ ~~ ~~ I ~~ ! 14.70 29.88 12.50 3.20 } 39.2 9.48 -~'li2 199.600 111.00 124.3 61.64 l.908 i l'24 2 61.65 1.899 ! 14.70 l 29.90 12.50 3.20 ]j 39.2 9.48 12.2 401.200 112 (H) [ 15890 ! 14.jii { 29.92] 12.50 I 39.2 [ 9.47 I 2_.2 ~ 3.20 406.800 I13.00 1240 61.65 12.2 l 12.50 1 20 39 2 ! 9.46 ! [29.942[9I96 f l2 50 410.400 114 00 121 8 (>l t.5 ' l.SS I 14.70 ~ i 1 20 39 3 9.45 12 1 414.000 115 00 121 7 al as 1 871 I4.70 , 29.98 ] 12.50_ j 3 20 39 1 9.44 12 3 121 5 6 I on 1.864 14.70 417.600 116 00 421.200, 117.00 l231 til.66 l I;M55 14.70 _f 30.00 _ ( 12.50 3.20 i 39.3 9.43 _ g 12.3 J 424.800 11800 123.1 61 66 ! 1.847 ! 14.70 30.02 12.50 3.20 { 39.3 l 9.43. [__ 12.3 .] 423.400. 119.00 i 123.0 ' 61 66 ' l.838 l 14.70 30.04 12.50 3.20 l 39.3 9.42 L 12.3 _] 432.000 120 tH) j 122 8 6I t.7 1.830 ; I4.70 l 30.05 l 12.50 3.20 ) 39.4 9.41 _ _ j. 12.4 61.7I 1.702 I 14.70 } 30.33 1 12.50 3 20 39.6 9.29 _ [ l2;6 5 iM.400, I44.00 [ l20 2 ; 604.S00 168.00 i l18.2 61.74 I 1.610 14.70 i 30 53 l 12.50 3 20 39.8 9.20 j . 12.8 g 691.200 192 00 l l16.2 61.77 ! 1.522 14.70 l 30.72 l 12.50 3.20 j _ 40.0 J _ 9. I I _ l __i 3.0, 777.600, 216.00 I14 3 61 80 1.442 ' I4.70 l 30.89 l 12.50. 3.20 i 40.2 { 9.04 i 13.2 X643HH) 240 00 112.3 61 x1 1.362 14._70 l 31.06 l 12.50 [ 3.20 40.4 j 8.96 1 13.4 RHR/CS Calc 25-NOV-97 File = NPSH75 XLS Page 6 of 6

CALCULATION SHEET PREPARED BY: T3)H- & Boston Edison CALC. # M-662 CHECKED BY: )N REV. E3 DATE 25-NOV-97 SHEET 82 OF lo3 Table 21 - Core Spray Pump with 1%/ Day Leakage Rate - 75 F Seawater Temperature Fl4 5-10 Lookup Lookup Eq 19 Eq.21 Eq.22 Eq.23 Eq 24 P.- Reg'd for NPSHA of Time Time Tp Density Psp Pc Pgas Hz Hsl NPSIIA 29 feet Margin becs) (hours) (*F) (Ibm /f t ') (psia) (psia) (fect) (fect) (fect) (fect) (psia) (feet) Plotted l Plotted l Plotted Plotted l vnFignl } on Fug 6 on F:g 6 on Fog 7 312 0.09 133.7 61.49 ,2 453 ! 15 66 30.93 12.50 2.38 41.0 10.51 12.0 4 557 j 0.15 139.5 61.1M j 2 851 16.19J 3128 l 12.50 2 38 41.4 10.90 [ _ t 12.4 i 5xx 0.16 140.6 { 61 16 j 2.935 16 29 !_ 31.35 12.50 619 0,17 141.3 l 61.35 } 2.9S8 l 16.36 31.39 12.50__ 2.38 _ ; _41.5 __ 10.98 _ _12._5 2.3M t 41.5 11.03 12.5 .l 16.43 31 43 12.50 2.38 j 41.6 _ 11.08 _ _12.6 656 U.IM j 142 0 61.34 3041{! 969 0.27 l 147 x 61 21 l_7.04 } 31.79 12.50 2.38 I 41.9_j_ _ I.55 [__12.9__ 3.521 I 1 ! 2M1 0.36 l 152.1 61.15 3.916 ! 17.53 J 32.06 12.50 2.38 _ 2.2 j_ _ 11.93 13.2 4 1.594 0 44 ' 1551 61 09 i 4.235 17.92._. [ 32.26 . l 12 24 13.4 12.50 2.3M 42.4 1.906 0.51 15x 0 61 04 4 520 1M.26 ; 32.43 ; 12.50 42.5 12.52 _, 2.219 0 62 160 I no 99 47s1 Ix 54 $12.56 { 12.50' l 2.1M 13 5 2.1x 42.7 12.75 11.7 2.511 0.70 . 1620 60.95 4.972 18 81 ; 32.68 ! 12.50 ! 2.38 i 42 8 ! 12.96 13.M + f 5.176 l[0$ 32.79 l 12.50 [ 2.38 $ 4E9 _[_ IEI6 159 j 2.S44 't79 163 7 ; 60.92 ,,] 43 0 j 13.37 14.0 1.156 O 88 j 165.4 60.88 l _5.3M7, 19.30__ 32.89 j 12.50 2.38 i 1.469 0.96 [ 166 9 60 MS l 5.579 l _19.52 32.99 12.50 2.38 j 431 j _ _ _l3.56 14.I 1.7S I 1 05 }_ 168.2 l, 60 82 l 5.749 ; I9.72 i 33.07 12.50 J 2.38.} 43.2 _{ _ 13.72 14.2 4.406 1.22 170 4 ; 60.78 6 049 l 20.07__ f 33.I5 _ 12.50 2.38 l 43.3 j_ 13 88 _ l4.3 _ ] 4.094

1. I 4 ! 169 4 ;

60 80 ' 5.912 19.91 _ j 33.21 12.50 2.38 43.3 l 14.02 1 14.3, J 4 4.719 1.31 i 171 3 60.76 6.175 20.21 j 33.27_j 12.50 2.38 j 43 4 ! 14.14 j _ l44, .{ t 5.011 1.40 20 36 ! 33.33 i 12.50 l 2.38 j 43.4 j 14.27_; _ _14.4 j 172 2 60.74 6.301 i 5 144 1.48 1730 60 72 6 420 20.49 ! 33.38 [ 12.50 l 2.38 43.5 ! 14.38 j 14._5, j 5.656 1.57 171 7 60 71 6 522 20 61 { 33 42, 12.50 i 2.38 43.5 i 14.48 14.5 t 5.969 I 66 ! 174.4 60 69 6.626 20.73 ! 33.47 12.50 l 2.38 43 6 _{ 14 58 14,6 f RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 1 of 6 1 l 4 L .______..J

CALCULATION CHEET PREPARED BY: FD)}- Q Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 83 OF 103 Table 21 - Core Spray Pump with 1%/ Day Leakage Rate - 75 F Seawater Temperature F14 5-10 Lookup Lookup Eq.19 Eq 21 Eq 22 Eq.23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Densit.s Psp Pc Pgas Hz Hsi NPSilA 29 feet Margin becs) (hours) ( F) (Ilim/H') (psia) (psia) (fect) (fect) (fect) (fect) (psia) (fect) . 717 1 20.84 33.51 12.50 2.38 l 43.6 14.6 _ J l.K3 60 66 j 6.323 [ _ 20.96 33.55 __12.50 2.38 { 43.7 _ _ 14.67 14.7 ! 6.2X I..i 1.74 [_._175.0 i 60 6x i 6 i .t j __.i _175.7 14.78 i 6.594 i t i.92 j l76 2 j 60 65 j _.6.901 21.05 33.58 12.50 2.38 43.7 14.85 14.7 l 6.906 ; l 7.157 1.99 1._76.7 60 64 6.979 _ 21.14 33.61 12.50 2_.38 43.7.._ [.. _14.93._ 14.7 1 j 7.188 2.00 i l76.x 60.64 l 6 995 21.15 { 33.62 } 12.50 2.38 43.7 ] 14.95 14.7 __ 9.033 2.51 l78 8 j 60 60 ! 7.315 21.52 ' 33.75 { 12.50 2.38 43.9 _[_ 15.26 14.9 j 12.498, 3.47 e _ _181_.0 ! 60 55 i 7.681 21.93 33.88 12.50 2.38 44.0 15.62 15.0 i i i 60 51 l 7.850 22.12 33.94 12.50 2.38 44.1 15.79 15.1 j[ 182.0 f 60.52 { 7.'903 ~~22.17 33.95 12.50 238 7 44.1 15.84 I 15.i'~'~ 15.848 4 40 19.325 5.37 182.3 22.924 6.37 ' 182.2 60 52

7 XX5 22.15 1' 33.94 i 12.50 2.38 1 44.1 15.82 15.1 t

5 i 26.735 7.43 181.7 60 51 7.799 22 05 ' 33.90 l 12.50 l 2.38 ' 44 0 15.74 15.0 i f { % U ] 12.50 I 2 TX 44 0 15.62 15.0 10.495 x 47 IMI o 60.55 7 oSI 21.91 14.12X 9 54, 180.1 00 57 7.52x 21.73 ! 33.77 l 12.50 2.38 l 43.9 15.47 l 14.9 i p 1 35.118 10.59 ! 179.0 i 60.59 i 7.148 21.53 } 33.69 12.50 2.38 i 43.8 l 15.29 l 14.8 ~ ~ i t. i 33.60 12.50 2.38_ _t 43.7 1 15.08 14.7 i t_ __.177.7 6062 i 7.137 _21.28 1 1 42.011 11.67 i 4 i. 4 45.918 12.75 j. 176;3 ' 6065 { 6 u'o 21.03 33.50 12.50 _ 2.38 ] 43.6 [_ 14.87 l 14.6 __g 49.869 11.85 i 174x 60 6M i 6 687 i 20.76 33.40 12.50 2.38 i 43.5 14.64 _[, 14.5 I I h + - -. - - - 4 51.851 14.97 173.3 60 72 6.463 l 20.50 33.29 12.50 2.38 ! 43.4 l 14.42 j 14.4 4 _.246 l 20.25 ( 33.19 12.50 2.38 l 43.3 j _14.21 _ [ 14.3 6 57.880 16 08 ; 171.x 6u 75 61.99M I7.22 [ l70.3 60 78 6 035 } _20.00 _' 33.08 12.50 _ 2_.38 j 43.2 ] 14.00 14.2 j [ 13.79 _[ __14.l _ J 60 x 1 j 5;817 l _19.74 l 32.97 12.50, __2 38 J 43.1 66.179 18.38 j 163.7 70.369 19.55 t 167.2 60 M5 1 5.618 i 19.51 ! 32.87 _12.50 l _ 2.38 i 43.0_ j _ 13.60_ [_ ,14.0_ 2.38 13.4I i 13.9 74.594 20.72 l65.7 l 60 MM 5 425 ;.19 27] 32.76 12.50 j. _ _! 42.9 i 5.237 i 19.05 i 32.66 12.50 l 2.38 42.8 i 13.22 L' 13 8 ) 7X.915 21.92 164 2 60 91 6 4- +-- 'l 13.06 i 13.7 i f li>2 5 l 60 94 5.068 18 85 1 32.56 12.50 j 2 38 42.7 Mt.272 23.13 RHR/CS Calc 25-NOV-97 File = NPSH75 XLS Page 2 of 6

CALCULATION SHEET PREPARED BY: 1)DH- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 84 OF [03 Table 21 - Core Spraf Pump with 1%! Day Leakage Rate - 75 F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq.21 Eq 22 Eq.23 Eq.24 Pc Req'd for NPSHA of Time Time Tp Density Ps p Pc Pgas Hz Hsl NPSHA 29 feet Margin (secs) (hours) ( F) tibm/ft') (psia) (psia) (fect) 6cet) (fect) (fect) (psia) (fect) ! M7.590 l 24.33 [ ~ 161.4 j 60.97 ! 4.903 ! 18.65 32.46 ' 12.50 2.38 i 42.6 12.90 1 13 6 [ 434i l i8.45 32.37 12.50 2.38 42.5 12.74 i3.5 f 91.959 l 2534 l i60 o j 60 99 ISM 7 j 61 02 [ 4.597 l 1127_ 32.28 12.50 2.38 42.4 12.60 13.4 96.315 j 26.75 ; ', 100.723 27.98 : 157.5 61 04 ! 4.466.i _18.11 t 32.19 12.50 ! 2.38 42.3 12.47 13.3 1 i._. 13.2 105.128, 29.20. 156.3 l 61 07

_ 4.339 l 17.96 j_ 32.11 _ 12.50 4 2.38 g _42.2 j

___I 2.3 5 _ 13.1_ j 109.61I ; 30 45 155.I l 61 09 [4 215 ! 17.80 32.03 12.50 2.38142.1 l _12.22 2.38442.1 g _ j 13.1 12.12 114.124 i 31 70 ' 1540 ! 61.11 ' 4.103 i 17.66 31.95 12.50 ) 1 I x.662 12.96 1530 ' 61.I3 4 005 17.54 j 31.88 12.50 2.38 y 42.0 J_ 12.02 _ [ l 3.0 121.106 34 25 15I 9 f 6I.I5 l 3 897 17.40 31.80 12.50 2.38 ! 41.9 I i1.91 ~~{ 12.9 L2.387 41.9 i~ 11.83 j 'Ij.9] 127.955 ' 35.54 151 0 f 61 17 1 812 l 17.5 31.74 12.50 112.617 16 84 1500 61 19 ! T 71x 17.1x 31 67 12.50 l 2.38 41.8 1_1.74 12.8 t i 117.29X 1x I4 149 0 61 21 1 625 17 06 ' 31 60 12 50 2.3x 41.7 11 65 12.7 t { 31.5 { _ 12.50 f 215 41.7 11.57 12.7 141.950 19.44 145.1 61 21 1547 16.96 , 146.749, 40 76 1471. 61 25 l 3 460 16.84 [ 31.47 12.50 { 2 38. 41.6 L _ l1.49 _ j. 12 6 l 151.545 42.10 [ 186.2 ! 61.26 j _ _3.333 16.74 1 31.40 12.50 { 2.38 j _ 41.5 i 11.41 l 12.5 { 3.307 _.. 16 64 j 31.34 12.50 l 2.38 1 41.5 11.34 _L 12.5 156.333 43.43 [ 145 1 ; 61.28 161.157 44 77 1 144.5 l 61 30 ( 3.241 j _ 16.56 l 31.28 12.50 l 2.38 j _41.4 [ 11.28 __j 12.4 165.970 46 10 143.7 61 31 4 3 176 ! 16.47 ! 31.23 ( 12.50 } __ 2_38 _j 41.3 ! 11.21 12_3 j 170.x14 47.45 142.9 61.32 3.112 { lh39 [ 31.17 l 12.50 2.38 i 41.3 1 __11.15 12.3 _ j 2.1 _ j 172.M00 48 00. 142 6 61.33 3.089 ! 16.36 j_ 31.15 12.50 _. 2.38 _ _ 41.3 _ _ _l1.13 _ j 1 41.2 11.10 l 12.2 __j 31.12 12.50_L 2.38 176.400 49 00 ' 142 2 61 34 j 3.054 t _16.31 t 16 26 ! 31.09 12.50 j _ 2.38_j 41.2 11.06 12._2 _ j 1 x0.000 50.00 141.7 61 34 i 3 020 ; I 1X3.600 51.00 l 141.3 61.35 l 2.957 ; 16 22 _,I~ 3106 l _12._50_j, 2 38 j 41;2_ l 11 03_ ,12.2.__ j .._2.1 1 31.02 1 12.50 2.38 i 41.1 i 1_1_.00 187.200 52 00 140 x 61 16 ,' 2.954 : 1._6.17.1 4 190.X00 51 00 140 4 61 17 ' 2.921 16.13 30.99 1. 12.5(L 2.38 ! 41.1 10 97-. 7 12,.1, RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 3 of 6

CALCULATION SHEET PREPARED BY: PbW & Boston Edison ~ CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 85' OF 103 Talite 21 - Core Spray Pump with 1%/ Day Leakage Rate - 75 F Seawater Temperature F14.5-10 Lookup Lookup Eq.19 Eq.21 Eq 22 Eq.23 Eq.24 Pc Req'd for NPSHA of Time Time Tp Density Pvp Pc Pgas Hz Hsl NPSHA 29 feet Margin (secs) (hours) ( F) tibm/ft ') (psia) (psia) (fect) (fect) (fect) (fect) (psia) (fect} ' 194.400 ; 54.00 ! 1403) i

61. 3M

_ 2.MM7 16.08 30.96 12.50 2.38 41.1 1 10.93 { 12.1 i 1 ]' l' 198.0(Hi 55.00 j _,139.5 61.38 2.856 16.04 30.93 12.50 2.38 41.0 1 10.90 j 12.0 i + 201.600 56 00 l _ l.39.1 61 19 . 2.824 ' 16.00 30.90 12.50 2.38 41 0 i 10.87 12.0 i 1 i ,i _. 10.84 ' 205.200, 57.00 1'. 13M 7 614ti ! 2.792 15.95 { 30.87 12.50 2.38 41 0 12.0 i 7 ' 20M.M00 5M 00 1 13M 2 i 61.41 - 2.760 15.91 1 30.84 12.50 2.38 41.0 10.81 J' 12.0 i t i t 1

212.400 l.

59 00 [ 137.M 61 41 ' 2.729 15 87 30.81 12.50 2.38 40.9 10.78 11.9 + 137.3 6142 2.699 15.83 30.77 12.50 2.38 40.9 10.75 11.9 l 156.9 216.000 i 60 00 l I 219.600 ' 6 l.00 61 41 2.66M I5.78 30.74 12.50 2.38 j _ 40.9 _ _ _ 10.72 11.9 j 2.638 15.74 30.71 12.50 [ 2.38 j 40.8 10.69 11.8 J 221.200 62.00 ._ 136.5 i 61.44 1 i 1 30.68 12.50 2.38 40.8 10 66 11.8 22t.800 61.00 t 136.0 61.45 t, 2.607 1_5._70 _. 30.65 ! 12.50 2 38. 40.8 10 64 11.8 2. I 210 400 64.00 135 6 61 4; 2.57M 15 66 11.7 ~ ^ 214J H Hi 65.00 135.2 v.! 46 2.549 15 62 30 62 12.50 21M 40 7 10 61 217m00 66 00 I34.7 v.I 47 2 520 15 58 30.59 - 12.50

2. 3 M.

40.7 10 SM I 1.7 f 40.7 10.55 _.u. I I.7 ~ f l 241.200 67 00 134.3 I 614M i 2 491 ! 15.54 30.56 12.50 2.38 l 2.462 j

244.800 l 68 00 [_ l}1.8 15.50 30.53 12.50 2.38 J _40.7 10.52

} __ l 1.7 614x

24M.400 ; 69.00 [_133.4 61.49 l 2.434 15.46 30.50 12.50 2.38 j 40 6

_ 10.50 _ 11.6_ I 30.47 12.50 2.38 40.5 10.47 11.6 61.50 1 2 407 i q ' 252JMH) 70 00, 1_31 0. 61.51 l 2.379 l 15.38 i 15.42 255.600 71.00 l 132.9 30.44 12.50 j _2.38 40.6 l 10.44 11.6 i s 1 11_.5 p._ _2.38 l 40.5 l 10.42 i 61.51 2.351 ; 15.34 i 30.41 12.50 259.200 72 00 [_ 132.1 _g 4 4 262.M00. 73.00 131 9,i 61.52 ' 2.337 > 15.32 I' 30.39 12.50 i 2_.3_8 40.5 j 10.40 i i 1.5 1 _.s _ 1 n } 266.400, 74.00 131.7 61.52 2.324 - 15.30 ! 30.38 [ 12.50 ! 2.38 ! 40.5 10.39 11.5 1' 1 ~ 12.50 j_2 38 j 40.5 l 10.38 11.5 i ~4 - +- 15.28 ; 30.36 270.000 75 00 [ 131.5 ; 61 51 ! 2.311 j 10.37 _[ l1.5_ j 271.600 76 00 ; 131 2 61.51 l 2.298 ; 15._26 _ !_ 30.3,5_ 12.50 l 2.38 j 40_.5_ [ 40 4 10.35 j 11.4 l 277.200 77.00 i 131 0 61 51 l 2.285 15._25. ! 30.33 l 12 50 [ _ 2.38 ; 2M0.M00, 7M 00 ito 8 61.54 2.272 15.23 30.3l j !2.50 [ 2.38 j 40.4 10.34 11.4 i RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 4 of 6

CALCULATION SHEET PREPARED BY: PM & Boston Edison CALC.# M-662 CHECKED BT : M REV. E3 DATE 25-NOV-97 SHEET 86 OF 103 Tahic 21 - Core Spray Pump with 1%/ Day Leakage Rate - 75 F Seawater Temperature F14 5-10 Lookup Lookup Eq 19 Eq.21 Eq.22 Eq 23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Density Psp Pc Pgas Hz Hsl NPSHA 29 feet Margin (secs) (liours) ( F) (Ibntflh (psia) (psia) (fect) (feet) (feet) (feet) (psia) (feet) / 61.54 t 2.258 15.21 30.30 12.50 2.38 i 40.4 10.33 l 11.4 2X4.4tH), 79.00 L 130 6 i l288.000' K0 00 } 130.4 l 61.54

2.245 15.19 30.28 12.50 2.38 9 40.4 10.31 11.4 s

3 291MH) ' X I.00 { '130.2 61.55 1 2.232 15.17 30.27 12.50 2.38 i 40.4 10.30 11.4 J 295.200, M2.00 [ I29.9 f 61.55 {M19.j 15 15 30.25 12.50 2.3 h _j _ 40.4 10.29 11.4 t f295.M00 M3 00 l I29,7 ! 61.55 i 2 207 l 15.13 ! 30.23 12.50 2.38 40.4 { 10.28 l 11.4 302.400, K4po j 129.5 61.56 2.194 ! 1511_ j 30.22 12.50 2.38 40.3 ] 10.26 L 11.3 1 106.t H HI ' M5 00 l 129.3 61.56 4 2.181 ! 15.09 i 30.20 12.50 2.38 ' 40.3 [ 10.25 I 11.3 '40.3 [ 10.24 IB f [2.169 [ i5i) [ 129.1 30.19 12.50 _ [ 2.3 109.600, 8 6 (10 61.57 311.200 87.00 [ 128 9 ; 61.57 ' 2.156 l 15 (16_ _ l 30.17 12.50 L2.38 _ l 40.3 _[__10.23 _ { 11 3, _] l 2.144 ! 15.04 l 30.16 12.50 [ 2.38 ; 40.3 10.22 l 11.3 116.x00 SS 00 12S 6 61 57 120.400 M9 00 12x 4 615x 2.111 ' 15 02 30.14 12.50 1

2. 3 M 40.3 10.20 II 3

~ ~ I 2 38 40.2 10.19 I 1.2

125 2 bl 58 2.1 Ix 15 00 ! 30.13_j 12.50_ 1 324.000 90 00 4

327.600 91.00 [ 128 0 615x 2.106 14.9x_ [ 30.11 g2__$0J _ 2.38 40.2 l ._10 18._' 11.2 40.2 i 10.17 11.2 1 131.200 92 00 ! 127.M 61.59 _2y94 { 14.97 ] 30.09 12.50 2.38 _4 314.800 93.00 ! 127 6 i 61.59 2_.082 l 14.95_ [ 30.08 12.50 2.38 } _ 40.2 1 10.16 11.2 1 2 070 l 14.93 ! 30.06 12.50 _2.38 _ ! _ _ _40.2] 10.15 11.2 31M.400 94.!H) [ 127.3 ; 61 60 1 1' 14.91 i 30.05 12.50 L' _ 2.38 40.2 10.13 ,--lIJ 1 61 60 i 1.2 142.000 95_.00.'.1_2 7.1 61 60 f _2.058 j 14.89 i 30.0312.50 [ _2.38 40.2 j _10J2_ _ +[ 145.600 96.00 ! I26.9 i 2.0 16 ._ f 30.02 j 12.50 ( 2.38 g _40.1 2.38 i 40.I j _10. I 1_1 _ _11._1_ 349.200 97.00 126 7 61 6I

2.016 j I4.88

[ [ 10.10 l 11.1 152.M00, 98 00 [ 126 6 61 61 2.027 ! 14.87 1 30.01 12.50 _I4 85 j 30.00 12.50 !. j 40.l j _ 10.10 L _ 11.1 ,j 2.38 356.400 ' 99 00 i 126 4 61 61 [ 2.017 ; i 2 i 40.1 l 10.09 i 11.1 -.. 38 14 r.4 i. 29.99 12.50 160.000 100.00 ! 126.2 61 61 2.00x i

40. l j, 10.08 _(_

11.l_ _ _ 361.600 101.00 j 1260 61 62 1.998 l 14 82 l 29.98 12.50 L 2.38., 167.2t HI 102 00 125.9 61 62 1.959 14 Mi ! 29.96 l 12.50 } 2 38 ; 40 I. - - - -.i 10.07 I 1.1 170.S00 103.00 125 7 61 62 1.9S0 14.80 29.95 i 12.50 ! 2.38,

40. I j 10.06 1

11.1 i RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 5 of 6

CALCULATION C HEET PREPARED BY: %)L & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 87 OF 10 3 Table 21 - Core Spray Pump with 1%/ Day I.cakage Rate - 75 F Seawater Temperature Fl4.5-10 Lookup Lookup Eq 19 Eq.21 Eq.22 Eq.23 Eq.24 Pe Req'd for NPSIIA of Time Time Tp Density 15 p Pc Pgas Hz Hsl NPSHA 29 feet Margin (secs) (f ours) (*F) tibne'R $ (psia) (psia) (feet) (fect) (fect) (fect) (psia) (fect) 374.400 ; 104.00 _ 125.5 l 61 63

i.971 14.78 29.94 12.50 1 2.38 40.1

[ 10.05 _ l 1.1 125.4 j 6163 l.962 14.77 29.93 12.50 2.38 40.0 10.04 11.0 378.(HK) l 105.00 I 381.600 j 106.00 125.2 61 63 1.953 14.76 29.92 12.50 2.38 40.0 10.03 j_ 11.0 l f 3MS.200 I107.(H) 125.0 6163 1.944 14.74 29.91 12.50 2.38 40 0 10.02 I 11.0 1.915 14.73 29.90 12.50 2.38 '40.0 ~ I ~ ~ l 1.0 l 3SM.300 ! l08.00 124.9 6I 64 10.02 + [' ~ 11.0 f 392.400 f 109.05 _ [15.7 61.64 1.926 14.72 29.89 12.50 2.38 40.0 10.01 1.917 14.71 29.87 12.50 2.38 40.0 10.00 11.0 ! 396.tKHI, i10 00 124.5 61.64 f 399.600 ! 111 00 [ 124.3 61.64 1.908 14.70 29.88 12.50 2.38 40.0 9.99 11.0 j , 403.200 1I2.00 124.2 ! 61.65 1.899 I4.70 29.90 12.50 2.38 40.0 9.98 11.0 [ 406.500 ' 890 14.70 29.92 12.50 2.38 40.0 9.97 _ _11,0_ I I 3.00 124.0 ; 61.65 l { 410.400 114 (Mi 123 x 61.65 18xl 14.70 29.94 12.50 2.38 40.1 l 9.96 11.1 414.t H Hi 115 00 121.7 ni os I.M71 6 14.70 29.96 12.50 2.3M 40.1 9.96 l 11.1 j 417.600 116.00 121 5 b i n6 1.S64 l 14.70 29.98 12.50 2.1M 40.1 9.95 11.1 40.1 9.94 j _ _11.1 117 00 l23.1 } 61.66 1.M55 i 14.70 30.00 12.50 2.38 i 421.200, 118.00 l_23.1 61 66 l 1.847 14.70 30.02 12.50 2.38 I j { 11.1 40.1 9.93 424.500 ) f 6166 j 2.3Q _ 40.2 9.92 j 11.2 1.838 14.70 30.04 12.50 l 428.4(H) ; i19.00 l23.0 ] _40.5 {_ 9.91 i 11.2 j 412.tHJO ' 120 00 122.8 61.67 1.830 l 14.70 30.05 12.50 2.38 40.2 j 9.79 11.5 l 51M.400 l 144.00 [ 120.2 j 61.71 l 1.702 ! 14.70 30.33 12.50 2.38 i 4_ 12.50 2.38 40.7 9.70 11.7 ! 604.800 ; 168.00.'.113.2,' 61 74 l 1.610 ! 14.70 30.53 1 r 691.200 i 192.00 l l 16.2 ' 61 77 1.522 i I4.70 30.72 12.50 2.38 _ 40 8J_ 9.62 i I 1.8 t 30.89 12.50 2.38 41.0 { __9.55 _j j 12.0 777.600, 216.00 [ l I4.3 6 I MO 1,442 ; _I4.70., M64.000 240.00 [ l12.3 ' 61 x1 1.162 l 14.70 { 31.06 12.50 l 2.38 [ 41.2 i 9.47 12.2 RHR/CS Calc 25-NOV-97 File = NPSH75 XLS Page 6 of 6

CALCULATION SHEET PREPARED BY: P)W- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 88 OF 103 Table 22 - RIIR Pump with 5%/ Day Leakage Rate - 75 F Seawater Temperature F l4.5-10 Lookup Lookup Eq.19 Eq.21 Eq.22 Eq.23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Densit.s Psp Pc Pgas IIz Hsl NPSHA 27 feet Margin tsecs) (liours) (*F) (ibm'fth (psia) (psia) (fect) (fect) (fect) (feet) (psia) (fect) Plotted Plotted I l Plotted, l Plotted l I i -4.--._ _,____ on Rg [ on Rg 6 .20 [?" N A : \\ "" 0 0 F 8 {__3 __j 40.2 10.01 13.2 _ _ 61.49 l 2.453_ f 15.66 1 .. -. [ 133.7 30.92 12.50 i TI2 l 0 09 i p. . _13.6 557 O 15 l 139.5 61 TS , 2_K53 i _1_6.19 4 31.28 12.50 3.20 i 40.6. ~., 10.40 i 1. 5xx 0.16 ! 140 6 61.16 2.915 I 16.29 ! 31.34 12.50 3.20, 40 6 10.48 13.6 4 619 0 17 I41.1 6135 ~ 2.988 l 16.36 ! 31.39 12.50 3.20 40.7 10.53 13.7 2 4 656 O 18 1420 61.14 j 3 041 l 16.43 ! 31.43 12.50 3.20 40.7 10.58 13.7 969 0.27 1478 61 21

3.521 17.04 31.79 12.50 3.20__j

41. l _. [_ _11.05

}_ _ 14.1 61.15 i 3.916 17.53 32.05 12.50 J 3.20 l 41.4 } 11.43 .[__ 14_.4 152.1 l.2x1 0.36 j 12.50 i 3.20 I 41.5 1' 11.74 ,i - 14.5 1.594 0 44 1551 ! 61 09 l 4.215 i 17.92 1' _ 32.25. 12 50 { 1 20 41.7 12.02 l 14 7 i I 1.906 0 51 15xo nl 04 4 520 lx 26 ; 32 42 { 2.219 0 62 Ita I v.o 99 4m lx 54 12 55 12.50 l 1.20 41 x 12.25 14 x l 15.0 12.50 1 20 42 0 12 46 t 2 ;il o 70 1620 vo 95 4 972 18 80, 32 66.. - -12.50 3.20 l 15 i 2.x44 0.79 161.7 ; 60 92 5.176 19.04 ! 32.77 l __12.66 _.2.1 4 1 2 T.156 0 xx l 165 4 l 60 xx 5.387 19.29 j 32.87 ! 12.50 3.20 1 42.2 1 _ 12.87 .[ 15.2 (32.97 j 12.50 _ 3.20 ' 42.3 _ j__ _13.06 l 15 3 1.469 0 96 ! 166.9-60 M5

5.579. 19.51 1.781 1.05 16M 2 '

60 x2 5.749 ! 19.71 ( 33 05 J 12.50 l 3.20 42.3 { l3.23 { 15.3 _ y 13.38 [ 15_.4 4.094 1.14 169 4 l 60 80 5 912. 19.90 i 3312 J 12.50 L3.20 j 42 4 j ._ i _ _15.5_ .._2._5. !. _ _13.52 . _... _,l __3_3.18_,i 12.50 3 4 _ _. 20 l 20 05 4.406 1.22 ! 170 4 60.7M 6 049 20.20 ! 33.24 i 12.50 3 20 42.5 ! 13.64 j 15.5 4.719 i TI 171.1 60 76 l 6175 l 20.34 ! 33.29 } 12.50 l 3.20 42.6 ! 13.77 [ -1 15.6 I 5.011 1.40 172 2 60 74 6 101 -4 5.144 14x 171 o no 72 6 420 20 48 ! 33 34. 12.50 L' _3 20..., _.2 6 13 88 ._15.6 4 1 a 5.656 1.57, 171.7 60 71 6 522 20 59 ; 33.38 12.50 j _. 3.2p 42._7 l 13.98 [ 15.7 5.969 1 66 174 4 60 69 6 626 20.7I [ _3 3_.4_2 12.50 i 3 20 42.7 l 14.09 15.7 1 t Page 1 of 6 RHR/CS Calc 25-NOV-97 Ftie = NPSH75.XLS

CALCULATION EHEET PREPARED BY: PDR- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 89 OF 103 Table 22 - RilR Pump with 5%/ Day Leakage Rate - 75 F Seawater Temperature F14 5-10 Lookup Lookup Eq 19 Eq.21 Eq 22 Eq 23 Eq 24 Pc Req'd for NPSHA of Tunc Time Tp Density Ps p Pc Pgas Hz Hsl NPSHA 27 fect Margin (secs) (hours) ( F) tibnt'fi$ (psia) (psia) (tec0 (feet) (fcct) (feet) (psia) (feco 20.82 l 33.46 l 12.50 _ 3.20 (, 42 8_ [ 14.18 t 15.8 j 60.6x l 6.717 j 6.2x 1 I 74 (,175;0 j _ [ 175.7 l 60 66 i 6 823 20.94 l 33.50 12.50 3.20 1 42.8 _j _ 14 28 _ L 15.8_ i 6.594 1 83 i t. 4 . 6.90I 21.02 l 33.53 12.50 3.20 l 42.8 14.36 15.8 l 6.906,' l.92

176.2 i 60 65

.' -6.979 21.I1 j 33.56 12.50 3.20 _1' 42.9 I4.43 l 5.9 7.I57,' I.99 1 176.7 i 60.64 .i . 33.56 12.50 3.20 ! 42.9 14.4 5_ L 15.9 p 4 t-- 7.1xx 2.00 [_176.x j 60 64 i 6.995 21.13 j ,i 2 51 178 x ! 6n 60 7.315 214x l 33.67 12.50 3.20 ! 43.0, 14 76 l 16.0 ! 9.033 4 4 43.1 l _ 1_5.12 _ _ _ 16.1_. 12.498 3'47,i IMI o 60 55 7.6x1 21.58 33.78 12.50 3.20 __ I 5.x4x 4.40 l I82.0 : 60 51 ! 7 550 22.06 I 33 80 12.50 3.20 43.1 1 15.29 i 16.I 3.20 ] 43.1 ~ ~I 16.l ~' ~~ f IX2.1 ! 60.52 7.903 i 2f5~i 33.78 12.50 f 19.125 15 34 5 37 !, 22.924 6 37 i Ix2.2 i 60 52 7.xx5 ! 22.06 l 33.74 12.50 3.20 l 43.0 15 32 l 16.0 + 26.715 7 41 IMI.7 60 51 7.799 21.95 j 33.66 12.50 ! 3.20 l 41 0 { 15.24 l 16.0 l 10.495 S 47 1x10 no s s 7 6x 1 21 x0 33.5x 12.50 3 20 42 9 15.12 15.9 34.128 9 54 INo I no 57 7 52K 21.61 33.47 ; 12.50 3.20 42.5 14 97 15 X [~ 33.35 h 12.50 42 7 14 50 i5.7 3 20 10 59 -{ l79.0 . 7.148 21.39 15.1 I X 60 59 4 60 62 7.137 [ 21.13 33.24 {_ 12.50 3 20 _j. 42.5 _ ; _14.59_ { 15.5 42.011 l 11 67 L 177.7 45.918 12 75 ( 176.3 ; 6065 6.916 l 20.86 33.10 ~ 12.50 3.20 J 42.4 j 14.37 L 15.4 ___ 49.569 13 55 [ 174.x ; 60 6x

6;657 j 20.58 [ 32.96 12.50 3.20 ! 42.3 j 14.15

[_ 15.3 _ _ 3 l 13.93 [._ 15._I 3 51.XK1 I4.97 j _ l73.1 l 60 72 l 6.463 l 20.30 l 32.83 _ 12.50 3.20 j. 42.1 13.7i 15.0 l i 57.xx0 16 08 ! l7l 8 60.75 6.246 i 20.04 [ 32.69 12.50 3.20 42.0 _J 4' t 61.998 17.22 ! 170 3 60 7x ,' 6 015 ,l _19 7_7 1 32.55 l 12.50 . _3.20 l 41.5 t 13.51 r 14 8 l i _4 .g 41.7 13.29 14.7 l 66.179 18.38 i 163.7 60 51 5 x17. 19.50 1 32.41 l 12._5 _0L 3.20 1 70169 19.55 ; I67 2 60 M5 5 61x i 19.25 _..i 32.27 l 12.50 l 4 13 10 14.6 l _1_6.. 4__ 3_. 20 74.594 20 72 165.7 60 xx 5425 i 19.01__1 32.13 l 12.50 i 3.20 41.4 12.91 l 14.4 j 78.915 21.92 j 164 2 60.91 5.237 18.77 ! 32.00 l 12.50 3.20 41.3 i 12.72 { _ 14.3 i 3.20 41.2 { 12.56 14.2 l S t.272 23 13 ' 162 x 60.94 5.06M 13.55 i 31 37 _} 12_.50 3, RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 2 of 6

CALCULATION CHEET PREPARED BY: PDM- & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 90 OF 10 3 Table 22 - RIIR Pump with 5"'./ Day Leakage Rate - 75 F Seawater Temperature FI4 5-10 Lookup Lookup Eq.19 Eq 21 Eq 22 Eq.23 Eq 24 Pc Req'd for NPSHA of Tmic Time Tp Density Ps p Pc Pgas liz Hsl NPSHA 27 feet Margin (secs) (hours) ( F) tibm/fth (psia) (psia) (fect) (fect) (fect) (fecti (psia) (fect) M7.590 24.33 , 161.4 ! 60.97 4.903 i 18.34 } 31.74 12.50 3.20 l 41.0 12.40 1 14 0 12.24 1 13.9 1600 - 60.99 4.74I 18.13 31 61 12.50 3.20 { ' 40.9 ~ ~ 91.959 25.54 96.315 ; 26 75 [58 7 61 02 4.597 17.94 31.49 12.50 3.20 l 40.8 [_I2.10 _b 13.8, 31.38 ] 12 50 3.20 J 40.7 11.97 j 13.7. _ 100.723, 27.9X 157.5 6104 l _4.466 17.77 l 12.50 3 31.26 3.20 40.6 11.84 13.6 105. I 2X 29.20 156 3 j 61 07 ' 4.339 l 17.60 1 12.50 3.20 40.5 _g i1.72 13.5 f __ 31.15 , 109.61I, 3045 155.I ! 61.09 q ,_215 17.43 4 l14.124 31.70 154.0 61 II l 4.101 17.28 i 31.05 12.50 3.20 40.3 _ i _ l I.61_. 13.3, y I1x.662 ; 32.96 153 0 l 61.13 l 4 005 ! 17.14 30.95 12.50 3.20 J 40.2 J _ l1.52 } 13.2 121.106 34.25 151 9 61.15

3.897 i 17.00 30.84 12.50 3.20 l 40.1 l

11.41 l 13 1 ~ 1 ~ 127.955 35 54 l'51 0 61.17 i~$21M12 16 88 30.75 12.50 3.20 j 40.1 ~T I1.33 i 13 i I I 3.0 11.2_4 _ f 112 617 36 X4 1500 61 19 3.71 x 16.74 30.65 _, _ 12.50 3 20 ; 40 0 117.29x 1x.14 1490 v.1 21 162M 16 62 30 56 12.50. 1.20 l 19 9 11.15 12.9 141.9x0 19.44 148 1 61 21 3 547 16.50 30 47 12.50 3.20 19 x Ii 07 12 M , 146.749, 40.76 147.1 61 25 3 460 16 38 30.37 12.50 _ 3 20 _ l _39._7,{ 10.99 { 12.7 151.545, 42 10 i 146.2 61 26 l _ 3.381. 16.27 ! 30.29 12.50 3.20 J 39.6 j_ 10.91 J 12.6 ] 156.133 41.43 } 145.3, 612x i 3.307 ! 16.16 30.20 12.50 3.20 l 39.5 Q 10.84 l 12.5 _ _ _j 161.157, 44.77 { 144 5 61.10 l 3 241 16.06 30.12 12.50 3.20 j 39.4 1.10.78 { 12.4___ i 61.31 ! ~ 3.176 i 15.97 1 30.04 12.50 3.20 j 39.3 [ 10.71 [_ _ l_2.3 165.970 46.10 { f43.' ~ 170.M14, 47 45 i l_42.9 61 12 3.112 ' l~5 87 ' 29.96 12.50 3.20139.3 1 10.65 12.3 i 15.84 } 29.93 12.50 3.20_j 39.2 10.63 12.2 j 172.800 4x 00 142 6 61 31 3 089 176.400 49 00 142.2 61.14 3 054 15.78 t 29.89 j 12.50 3.20 j _ 39.2 10.59 j _12._2 i 1S0.000 50.00 141 7 61 14 3 020. 15.73.__ [ 29.84 [ 12.50_{_3 20 j_ 39.l _j 10.56 _ L 12.1 a 10.53 151.600 51 00, 141.1 61.15 2.987 15.68 ; 29.79 l 12.50 l 3 20 j _ 39.1 l 4_ _,12.1 I S7.200 52.00 140.8 61 16 2.954 15.63 29.75 j 12.50 _ {__3 20 3 _39.0 10.50 12.0 190.800 53.00 140 4 61 37 2.921 15.58 29.70. 12.50 i 3.20 39 0 10.46 12.0 J RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 3 of 6

CALCULATION CHEET PREPARED BY: D Q- & Boston Edison CALC. # M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 91 OF lo3 Tahic 22 - RIIR Pump with 5%/ Day Leakage Rate - 75 F Seawater Temperature F14 5-10 Lookup Lookup Eq 19 Eq.21 Eq.22 Eq.23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Density Psp Pc Pgas Hz Hsl NPSHA 27 feet Margin (secs) (liours) ( F1 t ibm /ft') (psm) (psia) (fect) (fect) (feet) (fect) (psia) (fect) j 194.400, 54 00 [ 140 0 j 61.tx 2.MM7 15.53 l 29.66 12.50 3.20439.0___ 10.43 12.0 _j j 195.000 l 55 00 139.5 ' 61.38 2.M56 15.48 j 29.61 12.50 3.20 1 389 10.40 11.9 j {201.600 56 00 139.1 61.39 2 M24 15.43 ~ 29.57 12.50 [ 3.20 38.9_} _ _10.37._ _ _ { 11.9 I {205.200; 57.00 t 13M 7 61 40 I 2 792 15.38 29.53 12.50 [ 3.20 38.8 10.34 i 11.8 61 4I i 2.760 15.33 } 29.48 12.50 3.20 38.8 10.3I [_ l I.8 , 20x.X00 l 58 00 I3M 2 j 212.400 59 00 137.x, 6141 i 2.729 15.29 29.44 12.50 3.20 38 7 10.28 11.7 , 216JHH1 ; 60.00 137.3 j 6142 2.699 15.24 29.40 12.50 [_ 3.20 38.7 10.25 11.7 l 219.600 ; 61.00 136 9 61.43 2 668 15.19 29.36 12.50 [ 3.20 38.7 10.22 11.7 221.200, 62 00 136.5 l 61 44 2.63 M 15.15 j 29.32 12.50 l 3.20 38 6 10.19 _] I I.6 38 6 10.16 i 11.6 226,M00 61 00 l 136 0 ! 61 45 2.607 ; 15 10 ! 29.28 12.50 j 3.20 210.400 l 64.txt 135 6 61 15 2 57x 15.06 { 29.2_4_ [ 12.50 l 3.20 ! 38 5 10.13 11.5 ' 29.20 12.50 1.20 l 3M.5 10.10 11.5 234.000 65.t HI 135 2 61 46 2.549 15 01 I 217.600 66 00. I34.7 6147 2.520 I4.97 [ 29.16 . IIJ _ _ 2.50 3.20 38.5 10.08 1 4 241.200 67 00 134.3 61.4x j 2.491, 14 93 { 29.13.

j. 38 4 _j.

_10 05_ L 11.4 12.50 3.20 j _2 462 f 14.88

244.X00 l 68 00 j 133.8 !

61.48 g.20J 38 4 _ {_ _1102 _ _{ 11.4_ 3 29.09 12.50 248.400 ! 69.00 1' 133 4 61.49 l 2.414 1 14.84 29.06 12.50 3.20 -t 38.4 9.99 j 11.4 l 252.000 70 00 j 133.0 61 50 l 2;407 j 14 80 29.03 12.50 3.20 _j 38.3 9.97 _j 11.3 255.600 71 00 ! 132.5 61.51

2.379 l 14.76 28.99 12.50 3.20 l _ 38] [_

9.94 11.3 259.200 72 00 132.1, 61.51 2.351. 14.72 28 96 12.50 l 3.20 g 38 3 J _9.91 i 11.3 ] 262.x00 73 00 131.9 61 52 2.337 l 14.70 _ 28.95 12.50 l 3 20 } 38 2 j 9.90 ? I1.2 28.97 l 12.50 ( 3.20 ! 38.3 _j. 9.89 _ I 1.3,_ j 266.400 74 00 131.7 61.52

2.324 l 14.70__;

2703H H1 75 00 131.5 61 51 2.311 ! 14.70 l 29.00 l 12.50 l 3.20 i 38 3 ]. _ 9.87 j__ 11.3 _j 273.600 76 00 I31 2 61.51 2.298 14.70 {_ 29.03 j_12.50 l 3.20_j 38 3 ! 9.86 j 11.3 l 277.200 77.00 131 0 61 51 2.285 ; 14.70 ! 29.05 l _12;50_{. 3.20 ; 38.4.{ 9.85 l 11.4 j 280.M00 78 (H) 130x 61 54 i 2.272 l 14.70 j 29.08 l 12.50 ! 3.20 1 38 4 9.84 _ C.4lI _ J RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 4 of 6

CALCULATION SHEET PREPARED BY: 9M- & Boston Edison CALC.# M-662 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET 92 OF~ (03 Table 22 - RIIR Pump with 5%/ Day Leakage Rate - 75 F Seawater Temperature F14 %I0 Lookup Lookup Eq.19 Eq.21 Eq 22 Eq.23 Eq.24 Pc Reg'd for NPSHA of Time Time Tp Densits Psp Pc Pgas Hz Hsl NPSHA 27 feet Margin (secs) t hours) ( F) (Ibm /ft') (psia) (psia) (fect) (feet) (fect) (fect) (psia) (feet) 1 284.400 79.00 _ 130 6 61.54 2.25M { 14.70 1 29.11 12.50 3.20 38.4 9.M2 i 1.4_ _j

288.000 30.00 130 4 61.54 2.245 [ 14.70 } 29.14 12.50 3.20 38.4 9.81 11.4 i 14.70 29.17 12.50 3.20 38.5 9.80 11.5 291.600

M 1.00 130.2 i 61.55 2.232 t

295.200 M2.00 I29.9 : 61 55 2.219 14.70 29.20 12.50 3.20 38.5 9.78 11.5 3.20 3855~~~ 9.77 ~~}i7 ! 61.55 2 207 14.70 29.23 12.50 ~ ~ 52(I1{38;6 [ 9.76 ]_ ]f' 11.6 _ _ 298.X00 M1.iHi 11.5 l l 302.400 l M4.00_ 129.5 61.56 2.194 l 14.70 29.25 12.50 l 106.tHHi, M5.00 129.3 j 61.56 , 2. I X 1 [ 14.70 29.28 12.50 3.20 _j 38 6 j 9.75 _ l I.6 _ _

309.600, M6.00 [ l29.1 l 6I 57 i 2.169 j 14.70 29.3I I2.50 {_ 3.20 l 38 6 9.74 11.6 4

! 313.2tN) M7 00 j I28.9 l 61.57 2.156 i 14.70 29.34 12.50 3.20 l 3 8.6 _., 9.71 l 11.7 9.72 I 11.6 316.XtH1 + M3 00 j 12M 6 ! 6157 2.144 { 14.70 29.37 12.50 3.20 l 38.7 38.7 ; 9.70 11.7 ' 320.400 M9.00 ; 12M 4 615x 2.111 ! 14.70 209 l_2.50 3.20 j. 12.50 1.20 3M 7 [ 9 69 11.7 { 29.45 j 29.42

324.000 90 00 12M.2 v.1 48 211M 14 70

12.50 l 120 3M 7.

9.68 I I,7 12 7.t 00 91 00 12M 0 foi 58 2 100 14.70 2.094 14.70 2937 12 50 i 3.20 38 8 _j 9.66 ii.M ^ 311.200, 92.00 127.M t.1 59 61 59 2.082 14 70 29.50 l 12.50 l 3.20 38.8 _{ 9.65 _. I 1.8 334.800 93.00 127.6 4 , 33M.400, 94 00 [ 127.3 61 60 2.070 14.70 29.53 12.50 }_ 3 20 38 8 j 9.64 I I.8 l 342.000 95.00 [ l27.I < > I no l _ _2.05K j 14.70 29.55 12.50 [ 3.20 38.9 I 9.63 i i 1.9 345.600, 96 00 i 126.9 61 60 j 2.046 l 14.70 l 29.58 12.50_}_ 3.20 38.9 { 9.62 1 11.9 ! 14.70 ! 29.60 12.50 j._ 3.20 38.9 i 9.61 [, i 1.9 , 349.200, 97.00 j _ l26.7 61.61 [ 2.036 14.70 {__29.62 12.50_[. 3.20 ; 38.9 1 9.60 [ I 1.9 l 352.M00 98.00 [ 126.6 61.61 l 2.027 j _14.70 l 29.64 12.50 { 3_20 _(38;9 J _9.59 j i 1.9 ] 356.400 99.00 ' I26 4 6I 6i 2.0I7 9.58 360.000 100 00 i 126 2 61 61 ' 2.008 14.70 l 29.66 12.50 [ 3.20 l 39 0.} L 12.0 i 361.600 101 00 i 126.0 61.62 1.99M 14.70 1 29.68 12.50 l 3.20 ! 39.0 4 _ 9.57. _ 12.0 9.56 12.0 367.200 102.00 125.9 6I62 1.9X9 14.70 ! 29.70 t 12.50 [ 3 20.{ 39.0 j _ 1.980 14.70 l 29.72 ] 12.50 [ 3.20 j _ 39 0 ! _ 9.55 i 12_.0 370.800 10100 125.7 61 62 + RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 5 of 6

CALCULATION CHEET PREPARED BY: PDtt & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 73 OF 10 3 Table 22 - RIIR Pump with 5%/ Day Leakage Rate - 75 F Seawater Temperature F14 5-10 Lookup Lookup Eq.19 Eq 21 Eq 22 Eq 23 Eq 24 Pc Reg'd for NPSHA of Time Time Tp Density Ps p Pc Pgas Hz list NPSHA 27 feet Margin (secs) t hours) ( F) tibm/ft') (psia) (psia) (rect) (fect) (fect) (fect) (psia) (fect) j 374.400 j 104.00 l 125.5 { 01.63 ! _1.971 l _14.70 29.74 12.50 3.20 39.0 9.55 .i 12.0_j ! 378.000 [ 105.00 j_ l25.4 { 6163. l 1.962 14.70 29.76 12.50 3.20 39.1 _ _ 9.54 j_ 12.1_ j i 6I 63 1.953 14.70 29.78 12.50 L 3.20 39.I 9.53 _! _ 12.1 _ , 38 I J.00 1 106._00 { 125 2 - 385.200 ! 107.00 125.0 i 61.61 1.944 14.70 29.80 12.50 l 3.20 39.1 9.52 1 12.1 ~~ -[ 12.1~ ! 38K.800 ! 108 00 T24 9 ! 61 64 1.915 14.70 29.82 12.50 l 3.20 39.1 9.51

392.400 ; 109.00 124.7 l 61 64 l.926 IOO 29.84 } 12.50 3.20 39.1 9.50 y 12.l _

i 196.000 l 110.00 124.5 ! 61 64 1.917 14.70 29.86 12.50 3.20 39.2 9.49 12.2 f 399.600 f 111.00 ~ ' 124 3 61 64 1.908 14.70 29.88 12.50 3.20 l 39.2 9.48 12.2 _ 3 ~ ~ , 401.200 ' 112.00 124 2 6165 1.899 !4.70 29.90 12.50 3.20 39.2 9.48 12.2 _ ] l 40n.x00 I13 00 I 124 0 61.65 1.890 14.70 29.92 12.50 3.20 39.2 9.47 12.2 ' 410.400 114 00 l 123 x 61 65 1.xxl 14.70 29.94 W2_.50 3.20 39.2 _ _ 9.46 _ ; 12.2 l 414.000 l l 5 00 ; 123.7 61 65 1 871 14 70 1 29.96 [ 12.50_ { 3.20 39 3 9.45 12.1 ' 417.600 l l61Hi 121 s ni o6 i e. 4 14 70 { 29._98_ 12.50 ' 3.20 39.1 9.44 12.3 i ' 421.200 117.00 j 121.3 61 66

, l.M55 14 ]O ! 30.00 12.50 3.20. j _39.3 _j 9.4 3 _ L,12_.3 _

61 66 ! 1.847 14.70_i 30.02 12.50 3.20 _ 39.3 [ 9.43 _ ( 12.3 f 424.800 118.00 [_,123 1 ; 428.400, 111).0f! [ l23 0 ! 61.66 j 1.838 14.70 30.04 12.50 i 3.20 39.3 l 9.42 l 12.3 l 432.tHHI f 120.00 j 122.K i 61 67 l 1.830 14.70 30.05 12.50 3.20 39.4 j 9.41 ~ 1 - ~ 12.4 ~ _ _. 2 9_ f 12.6 ' 5iM.400 144IDO [ 120 2 l 61 71 1 1.702 , I4.70 _ 30.33 12.50 _ _ _3 2 39.6 l 9 604.300 168 00 118.2 6l.74 { l.610. 14.70 30.53 12.50 3.20 39.8 9.20 _( , 12_8 _ _ _ 9.1 I 13.0 j 691.200 192.00 i16.2 61.77 [ 1.522 I 14.70 30.72 12.50 3.20 _ 40.0 l 777.600 216.00 i14 1 61 SO 1.442 i 14.70 30.89 12.50 } _, 3.20 40.2 i 9.04 13.2 M643 HH) 240 00 t 112.3 61 81 1.362 14.70 ] 31.06 12.50 l 3.20 40.4 [ 8.96 13.4 l RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 6 of 6

CALCULATION SHEET PREPARED BY: PDQ. & Boston Edison CALC.# M-662 CHECKED BY REV. E3 DATE 25-NOV-97 SHEET W OF 103 Table 23 - Core Spray Pump with 5%/ Day Leakage Rate - 75 F Seawater Temperature F14.5-10 Lookup Lookup Eq 19 Eq.21 Eq.22 Eq 23 Eq 24 Pc Reg'd for NPSHA of Time Time Tp Density Ps p Pc Pgas Hz Hsl NPSHA 29 feet Margm (secs) (Imurs) ( F) (Ibnvfth (psia) (psia) (fect) (fect) (fect) (fect) (psia) (feco l l Plotted j Plotted Plotted Plotted l on Fig 6 I on Fog 6 on Fig 6 on Fig 7 f 61.49 i 2.453 i 15.66 30.92 12.50 2.38 41.0 10.51 [_ 12.0 l f 312.. l 0.09 133.7 ~ O.15 139.5 61.38 i 2.853 16.19 31.28 12.50 2.38 41 4 _ 10.90 _ { _ 12.4 _ l 557 j 10.98 { _12.5 5xM i 0.16 140 6 61.36 j _2.935 16.29 31.34 12.50 2.38 g] 41.5 2.38 f 017 [ 141 3 61.35 { 2.9xx 16.36 31.39 12.50 619 41.5 11.03 12.5 1 61 14 j 3.041 16.43 31.43 12.50 2.38 i 41.6 11.08 12.6 656 0.18 [ 142.0 l 41.9 11.55 f 12.9 l 969 0.27 i l47.8 ~ 61 23 i 3.521 17.04 31.79 12.50 2.38 I I.2MI l O'.36 f l52.1 ~ 61 15 17.53 32.05 12.50 2.38 ~{ 42.2 !1.93 f 13.2 i I ~ 3.916 + l.594 O 44 155.1 6I 09 45235 ' T752 32.25 12.50 2.38 f 42.4 12.24 l 13.4 i [ I5S o i r.1 04 4 520 1836 32.42 i 12.50 2.38 42.5 l 12.52 l 13.5 1.906 0.53 { 12.50 2.38 42.7 12.75 i I37

2.219 0 62 160 I t.o 99 4.751 1M 54 32.55 2 531 0 70 162o no 95 4.972 i iM.80 32.66 l2.50 2.3M 42.8 12.96 i

I38 ~ 32.77 12.50 ~ ' 2.38 ~ 41 9 ~ 13.16~I 13.9 ~ ~ ~ [ ~ 5.176 f 19.03 ~ 2.844 0.79 '163 7 j 60 92 l 60 MS 5.387 _19.29 32.87 12.50 2.38 43.0 [ _ 13.37 {_ 14.0

3.156 !

0.88 l_65.4 j g ! 3.469 ~ 0.96 I 166 9 i 60 M5 5.579 19.51 32.97 12.50 2.38 43.1 } _ 13.56 [ _14.1 3.7X 1 I.05 [ _ l_68.2 i 60 x2 5.749 _19.71 33.05 12.50 2.38 43.2 13.72 _ [ 14.2 a _ _ [_ _169.4 60 7M i 6.049 [ _ 5.912 19.90 33.12 12.50 2 38 ! 43.2 13.88 [ 14.2 ' 4.094. 1.14 60.50 ._____._3_-. 14 20.05 33.18 12.50 2.38 I 43.3 14.02 -

170 4 4.406 1._22.

p_.._.. j { y 4.719 1 31 [ 171.3 60 76 i 6.175 l 20.20 33.24 12.50 2.38 43.4 _ 14.14 _j _ _ 14.4_ f _6.303 l _20.34 33.29 12.50 2.38 43.4 14.27 14.4 14.38___ [ J._5__ 5.011 1 40 [ 172.2 60 74 g 5.144 1.48

173.0 60 72 6.420 l 20.48 33.34 12.50 [ 2.38_

, 3.5 4 43.5 ! I4.48, [ _ _ I,4.5 j 33.38 12.50 l 2.38 5656 1.57 j 173.7 60 71 6.522 ; 2_0.59_ 12.50 [ 2.3 8_. j 43.5 l 14.58 _[ 14.5 20.71, f 33.42 5.9t>9 1.66 174.4 6069 ' 6.626 ; RHR/CS Calc 25-NOV-97 File = NPSH75 XLS Page 1 of 6

CALCULATION SHEET PREPARED BY: PDH- & Boston Edison CALC.# M-662 CHECKED BY: M REV. E3 DATE 25-NOV-97 SHEET 9f OF 103 Table 23 - Core Spray Pump with 5%/ Day Leakage Rate - 75 F Seawater Temperature Fl4.5-10 Lookup Lookup Eq 19 Eq.21 Eq 22 Eq 23 Eq 24 Pc Reg'd for NPSHA of Time Time Tp Density th p Pc Pgas Hz list NPSHA 29 feet Margin (secs) (hours) ( F) (Ibm /ft') (psia) (psia) (feet) (fect) (feet) (fect) (psia) (fect) 43.6 ] _ _ 14.67 l _ 14.6 1 60 6M [_ _6. 717 i _20.82 } 33.46 12.50 2.38 J 43.6 j 6.2X 1 1.74 f, _175.0 175.7 60 66 6 823 20.94 33.50 12.50 2.38 l _ _14.78 14.6 ! 6.594 1.83 1.92 [ l76.2 f 60 65 3 6.901 j 21.02 33.53 12.50 2.38 j 43.6 . _ 14.85 14.6 _ 6.906 l 7.I57 I.99 { I76.7 l 60 64 [ _6.979 [ 21.II 33.56 { 12.50 2.38 43.7 _ _ i4.93 j 14.7 3 f 7.188 2 00 [ 1768 i 60.64 l 6.995 21.13_.] 33.56 12.50 2.38 43.7 14.95 14.7 2.51 [ 178.8 60.60 7.315 ! 21.48 33.67 12.50 2.38 43.8 15.26 14.3 l 9.013 _.681 I 21.88 33.78 12.50 2 38 43.9 15.62 14.9 ~ 7 3 47 j lMi0 60 55 l 12.49S 3 ( 4.40 { 182.0 j 60.53 7 M50 22.06 33.80 12.50 2.38 43.9 l 15.79 l 14.9 l 15.K48 ' 19.325 j 5.37 182 3 j 60.52 7.903 22.10 33.78 12.50 2.38 43.9 } 15.84 14.9 22.924 l 6.37 182.2 1 60.52 i 7.885 22.06 33.74 12.50 2.38, 43.9 [ __ 15 82 14.9 26.715 7.41 1x1.7 60 51 i 7.799 21.95 [ 33.66 12.50 [_ _ 2.38.[ 43 8 l l_5.74 _ __4;8_ l I 30.495 M 47 181 0 m 45 7 6MI 21 M0 l 33.5_8 l 12.50 ~ 2.38 43.7 15.62 14.7 I 14.12S 9.54 180 I w 57 7 ;2x 21.61 l 33.47 j 12.50 2.3M 43+ 15 47 14.6 l 15.29 14.5 i 3S. I I X 10 59 l79.0 m.59 7.348 21.39 33.36 12 50 2.38 ! 43.5 4 42.011 l 11.67 j _ 15.08 [ 14.4 _ ] l77.7. 60 62 ! 7.137 ! 21.13 33.24 12.50 2.38 43.4 i _ L 14.2 ) 6 916 l 20.86_ _ _ L _14.87 _ l 176 3 ! i, 45.91 M ; 12 75 33.10 12.50 2.38 43.2 60 65 49.X69 13 85 j 1748 60.6x 6.687 ! 20.58 32.96 12.50 2.38 43.1 l 14.64 14.1

20.30 32.83 Ll2_.50_

2.38 j _ 42.9 1 _14.42 j. 39_ 51.SS I 14.97 j_ 173 3 ' 60.72 l 6.461. 32.69 2.38 i 42.8 1 14.21 i 13 8 [ 12.50 g 57.M80 16 08 [ 171.M 60.75 ' 6.246 _203{4__ ! 32.55 _ { l2.50 j 2.38_j _ 42.7 j 14.00 13.7 61.995 17.22 [ 170 3 60.78 6.035 19.77 66.179 IX 18 168.7 60.81 ~ 5.817 19.50__ [ 32.41 L !2.50 ! 2.38 42.5 ! i3.79 t _ i 3.5 70.169 19.55 167.2 60 85 5 6iM 19.25 i 32.27 12.50 }_ 2.38 4_2_4__] 13.60 _ _ _13.4_ j { 165 7 60 SM 5425 191)1. [ 32.13 12.50 1 2.38 42.3.j 13.41 13.3 74.594 20 72 75.915 21.92 164 2 60.u l 5 237 18._77 [ 32.00 12.50 [ 2.38 42.1 [ 13.22 13.1 j M1.272 23 11 i 162.x 60 94 5.06x 18 55 31.87 j 12.50 [ 2.38 42.0 13.06 13;0 ) RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 2 of 6

CALCULATION SHEET PREPARED BY: P]))f. & Boston Edison CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET 76 OF 103 Table 23 - Core Spray Pump with 5%/ Day Leakage Rate - 75 F Seawater Temperature FI4.5-10 I.colup Lookup Eq 19 Eq 21 Eq 22 Eq 23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Density Pip Pc Pgas Hr. Hsl NPSilA 29 feet Margin (secs) (hours) ( F) (Ibm /ft') (psia) (psia) (feet) (fect) (fect) (feet) (psia) (feet) ! M7.590 24.33 161.4 1 60.97 j _4.901.j 18.34 31.74 12.50 2.38 41.9 { _ 12.90 j 12.9_ j I i 91.959. 25.54 160.0 60 99 1 4.741 ! l8 I3 31.61 12.50 2.38 41.7 12.74 I I 2.7 61 02 41597~ ! 17.94 31.49 12.50 2.38 41 6 ~ii60 T 12.6 ] } %.315 ! 26."[5[ [ T55t.7 ,100.721 f 27.9X _ 157.5 ; 61 04 i 4.466 l 17.77 31.38 12.50 2.38 41.5 _ I2.47 [_ 12.5 I f 4.339 j 17 60 31.26 i 12.50 2.38 41.4 12.35 l 12.4 l 105.128 ! 29.20 156.3 i 61 07 [ 109.611 30.45 155.I 61 09 ! 4.215 l 17.43 31.15 12.50 2.38 i 41.3 12.22 12 3 114.124 31.70 I54.0 61 11 I 4.103 17.28 31.05 12.50 2.38 41.2_ [ 12.12 l 12.2 ~ ~' f 4 005 17.14 30.95 12.50 2.38 41.1_. } _ 12.02 L 12.1 l 118.662 ;. 34 25 I51.9 l 61.15 j _3 897 ',17.00 30.84 12.50 2.38 j 41.0_} _ 11.91 L 12.0 32.96 1530 ,1 61.I3 .i _ 4 121.306 127.955 35.54 l l51.0 i 61 17 3.812 16.88 30.75 12.50 2.38 } 40.9 l 1.83 11.9 132.617, 36 84 j 150 0 ' 61 19 ! 3.718 16 74 30 65 12.50. 2.38 1 40.8 11.74 11.8 l 117.298 18 14 149 0 61 21 1 628 16 62 30.56 1.1 50 { 2 3X 40.7 11.65 11.7 l a 1.980 19 44 14x 1 01 24 1 547 16 50 30 47 12.50 21x 40.6 11.57 11 6 16.3x l 30 37 12.50 2.3M 40.5 11.49 }. I 1.5 j , 146.749 40 76 147.I o1 25 1460 j i 151.545 42.10 146.2 ' 61 26 . 3.381 ~ 16.27 [ 30.29 12.50 2.38 1 40.4_[_ i 1.4 I .j i 1.4 l56.333 43 43 145.3 612M l 3.307 j 16.16 l 30.20 12.50 2.38 _{ 40.3 11.34 [ _ 11.3 _ 101.157 44.77 ! 144 5. 61 30 l 3.241 ! 16.06 l 30.12 12.50 2.38 i 40.2 11.28 I 11.2 165.970 46.10 143.7 61.31 '3.176 I 15.97 l 30.04 12.50 2.38 i 40.2 11.21 11.2 i ~IGIl'f 3 5] 1 lj _ ~ 170.814 47.45 142.9 6I 32 3 I12 15;87 _j 29.96 12.50 2.38 172.500 48.00 142.6 61 13 3 089 15.84 [ 29.93 _ 12.50 ! 2.38 _1 40.1_ [ _11.13 I 1. I I76.400 4900 142.2 61 14 . 3 054 15.78 l 29.89 12.50 2.38 40.0 11.10 11.0 1S0.000 50 00 i I41.7 61 14 3.020 15.73 l 29.84 12.50 2.38 10 0 11.06 11.0 181.600 $ 1.00 141.3 61 15 2.987 15 58 ~ l 29.79 ~ 12.5N 2.3x l 39.9_j 11.03 I ~ ~ iU ~ l I S7.200 52.00 140 K 61 in 2.954 15 63 7 29.75 12.50 ! 2.38 ! 39.9 11.00 i 10.9 l 2.38 ! 3958 ~ 10.97 I IO 8 ~ ~ ~ ; I [ 12.50 ~ 190.800 53 00 140 4 61.17 2.921 15.58 29.70 RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 3 of 6

CALCULATION SHEET PREPARED BY _ R>)}- Q Boston Eclison CALC. # M-662 CHECKED BY: REV. E3 DATE 2$-NOV-97 ) SHEET 77 OF 103 Table 23 - Core Spray Pump w;th 5%/ Day Leakage Rate - 75 F Seawater Temperature Fl4.5-10 Lookup Lookup Eq 19 Eq 21 Eq 22 Eq 23 Eq 24 Pc Req'd for NPSHA of Time Time Tp Density l5p Pc Pgas fiz lisl NPSIIA 29 feet Margin (wes) t hours) ( F) ( thm/ft'n (psia) (psia) (fect) (fect) (fect) (fect) (psia) (feet) 194.4(H 3,i 54 00 140.0 61.3 M } 2.8M7 l 15.53 29.66 l 12.50 2.38 1 39.8 i 10.93 l 10.8 i _. t l19MJHM; 55 00 l 139.5 61.3M ' _2 M56 ,15.48 29.61 l 12.50 2.38 39.7__[ __10.90 10.7 j 201.600,! 56 00 ' _139.1 61.39 _2.M24 _15.43. 29.57 1 12.50 2.38 1 39.7 j 10.87 I 10.7 I 4 .t 15.38 I 29.53 12.50 2.38 ! 39.6 l 10.84 l 10.6 1 205.200 ! 57.00 138.7 j 61 40 t _2.792 j 1 l 208.800 58 00 I3M 2, 61.41 _2.760 j 15.33 2148 12.50 L2.38 j 39 1 [ _ 10.81 10 6 212.400 59 00 i 137.M. 61 41 2.729 l 15.29 ! 29 44 12.50 { 2.38 1 39.6 i 10.78 i 10 6 j 4 1 29.40 12.50 { 2.38 3 10.5 j 216.t H H1 60 00 137.3 61.42 2.699 ; 15.24 { 29.36 39.5 10.75 1 219.600 ' 61 00 ; 136.9 j 61.43 ! 2.66M j 15.19_j _ 12.50 l 2 38 ! 39.5 10.72 l 10.5 j 221.200 62 00 j 136.5 ; 6144 I 2.61M 15.15 j, 29.32 12.50 2.38 ! 39.4 10.69 10.4 i 15.10 i l 12.50 2.38 l 39.4 226.M00 61 00 ; 1360 6145 ! 2.607 ! 155' f _29.28 4 {f ~ ' ! ~ ~l 0 4 10.66 10.4 29.24 12.50 2.38 : 39 4 10.64 ~~ 210.400, 64 00 t 135 6 61.45 2.57M i 2143HN) 65 00 ! 135 2 61 46 2 549 15 01 l 29.20 j 12.50 2.1x 39.3 !O 61 10.3 237.600 66 t Hi i14 7 61 47 2.520 14.97 ' 29.16 1 12.50 2 iM 39 1 10 SM 10.3 24I.200 6700 I34 1 61 JM 2;491 14 91 }_ 29 13 12.50 ; _2 TM I 39.2 _j 10.55_ ; _ _ _ 10 2 _ ._L2.38]_ 2 462 14 88_ }_ 29.09 12.50 244.800 6M 00 ; 133.M i l.48 39.2 .}. 10.52 j _10 2_ j [ 133 4 6149 2.434 ' l4.84 } 29.06 _ 12.50 ! 2.38 _j 39.2 ( 1050 _{ 10.2 j 24M.400, 69 00 252.t H N) 70 00 ; 1330 61 50 l 2;407 14 80 1 29.03 12.50 i 2.38 39.1 l 10.47 10.1 _ j 255.600 71 tHI 132.5 61.51 2 379, 14.76 1 28.99 12.50 l 2.38 39.1 10.44 10.1 l ! I4 7f 28.96 12.50 ! 2.38 ; 39.I 10.42 10.'l ) 259.200 72 00 152.1 61.51 2.351 ~ ~ 262.M00 ' 73(H) i 131.9 61.52 , 2.317 14.70 l 28.95 12.5jl i 2_. 3_8_..._,i 39 i 10 4 _. _. 1. _ t..-__ _0 _ _10.1 l t _._ u 266.400, 74 00 131.7 61 52 l 2.324 _14.70 l 28.97 12.50 L2.3M g 39.1__! _. 10.39 10.l___l 270J H H1 75 00 131 5 61 53 2.31I. 14.70 [ 29.00 J _12.50 ! 2.38 39.1 i 10.38__ __.10.1 l 271.600 76 00 131 2 61.53 2.29M ' I4.70 _ [ 29.03 l 12.50 L_2.38 j _ _39.l _ [ _10.37_ 10.1_ q l 277.200 77 00 131.0 61 53

2_2M5 l_4 70 _ [ 29.05 [ 12 50 L 2.38 10.35

[ 10;2 _ _ ; 39.2 280.M00 7M (H) 130.M 61 54 2 272 14 70 l 2_9 08 l 12 50__ i_ _ 2.38 39 2 ' 10J4_ _ 10 2 _ t 4 R!!R/CS Calc 25-NOV-97 File = NPSH75.XLS Page 4 of 6 -J

CALCULATION SHEET PREPARED BY: PDQ. & Boston Edison CALC.# M-662 CHECKED BY: REV _ E3 DATE 25-NOV-97 SHEET 78 OF 103 Table 23 - Core Spray Pump wilh 5%/ Day Leakage Rate - 75oF Seawater Temperature Fl4 5-10 Lookup Lookup Eq 19 Eq 21 Eq.22 Eq 23 Eq 24 Pe Req'd for NPSHA of Time Time Tp Density Ps p Pc Pgas Hz Hsl NPSHA 29 feet Margin necs) t hours) (*F) tibneft's (psia) (psia) (fect) (fect) (fect) (fect) L (psia) (feet) 2x4.400, 791M1 j 130 6 61 54 2.25M j I4.70

29. I I 12.50 2.38 39.2 10.33

( 10.2_ _J i 2xx of Mi x0 tHI 130 4 (.l 54

2.245 14.70 _ 29.14 12.5t) 238 39.3 10.3!

j 10.3 _ > 291Jd'0 x 1.00 130 2, 61 55 2.232 14.70 29.17 12.50 2.38 39.3 10.30 l 10.3 1 i 295.200 ; x2 00 1_2_9.9 61 55 t 2.219 14 70 i 29.20 12.50 2.38 39.3 ! ~ ~16 29 I I 10.3 _.4 __ 4._ 298.800 M3.00 129.7 61 55 2.207 l 14.70 I. 29.23 12.50 2.38 39.3 i . _.28 l 10 3 10 1 3 _.m 102.400 -, x4 00, 129.5.' 61 56 ! 2.194 l _14 70 i 29.25 12.50 1' 2.38 1 39.4 i 10.26 [ 10 4 4 _ + __. 4 ___.4 . _10.25 __. o 10._.4_ _ _. _. 106 tuni x5 00 2.1x1 14.70 1' 29.28 12.50 2.38 39.4 l 1_29.3 61.56 j.. 4 2.169 l 14.70 l 29.31 12.50 2.38 39.4 l 10.24 [ 10.4 109.6t Mi x6 00 } 129I 61 57 4 111.200 M7.00 128.9 6157 2.156 14.70 j 29.34 12.50 2.38 39.5 1 10.23 l 10.5 l 1 316.x00 xx 00 j l 128.6 ' 61.57 2 144 l 14.70 { 29.37 ] 12.50 2.38 39.5 _ l 10.22 10.5 j 120.4t H) 89 00 128.4 615x 2.111 14.70 [ 29.39 1 12.50 2.3x 39.5 - 10.20 10.5 l ~~ ~~ l 2 3x 5955 ' 10119' 10.5 124 (N MI 90 tui 12x 2 of sx 2 llx 14.70 ; 29 42 I2.50 127 f.tMi 91 00 125 0 61 4x 2 ItH. 14 70 29.45 12.50 ! 2 3x 39.6 10.1x 10 6 i 1 i 10 l 131.200 92 00. 127 x 61 59 2 094 14 70 i_ _29 47 _.17.- ... __10.6__ ~ _ _2 _50._ g_ 2 3 x.. _39 6 l t ..-y ... - l 29.50 12.50 39.6 l 10.16 134.800 93.00 i 127.6 6159 2.0x2 14 2 38 _ _.70 J 10.6 i 4 a ._4_. 4 5 11x.400 94 00 i 127.3 61 60 2.070 l 14.70 ! 29.53 12 50 j 2.38 l 39.6 j _ _l 10.6 10 15 1 14.70 l 29.55 12.50 { 2.38 39.7 l 10.13 10.7 34 2.t H M t 95.00 l_27.1 61 60 2.05x r t 2046 14.70 7 29.58 12.50 l 2.38 39.7 t 10.12 l 10.7 i 345.600 96 00 126 9 61 60 4 { 29.60 ! 12.50 5 2.38 i 39.7 1 10.11 10.7 149.200 97 00 ; 126.7 61 61 2 016 _14 70__ 4 %_. _ 4 j i

126 6 61 61 2.027 1430_j 29.62 l 12.50 1 2.38 j 39.7 10 10

[ _10.7 352.x00, 9x 00 1 150.400 99 00 126 4 6 I t.1 2 017 14.70 j 29.64 ( 12.50 ( 2 38 j 39.8 t 10.10 l 10.8 160 t M W) 1(H { 00 (26 2 6I 61 2.008. 14 70 ! 29.66 { 12.50 2.38 i 39.8 161/dHi, 101 00 1260 61.62 1.998 1430 [ 29.68 _j 12.50 i 2.38 39.8 10.08_ __, 10 8 10 09 j j 2 10.8 _j 367.200 102 00, 125.9 61 62 1.989 14.70 ! 29.70 i 12.50 ! 2.38 39.x i 10.07 10,8 1 370 Xf Hi 101.t Mi 125 7 6162 1 980 14.70 ; 29.72 i 12.50 2 3x 39 x 10 06 10 8 ~- RHR/CS Calc 25-NOV-97 File = NPSH75.XLS Page 5 of 6

CALCULATION SHEET PREPARED BY: PDl4 & Boston Edison z CALC.# M-662 CHECKED BY: REV. E3 DATE 25-NOV-97 SHEET ?? OF 103 Table 23 - Core Spray Pump with 5%/ Day Leakage Rate - 75 F Seawater Temperature Fl4.5-10 Lookup Lookup Eq 19 Eq.21 Eq 22 Eq 23 Eq 24 Pc Reg'd for NPSHA of Tunc Time Tp Density Pg Pc Pgas Hz Hsl NPSHA 29 feet Margin (secs) t hours) ( F) tibm/ft'n (psian Ipsia) (fect) (fect) (fect) (fect) (psia) (fect) 14.70 29.74 12.50 2.38 l 39.9 { _ _ 10.05 j_ 10.9 j

374.400 j 104.t]O 125.5 l 61.63 1 1.971 3

j 37M.tHM) j 105.00 } 125.4 ' 61 63 1.962 14.70 29.76 12.50 2.38 L _39.9 { 10.04 [ 10.9 l 381.600 j 106 00 j 12S.2 61.63 1.953 14.70 j 29.78 12.50 2.38 j 39.9 L 10.03 [ 10.9 39.9 L _10.02 10.9 3X5.200 l 107.00 ' l25.0 l 61 63 l.944 14.70 [ 29.80 12.50 2.38 j 1XX.800 j 108 00 124 9 61.64 1.935 14.70 29.82 12.50 2.38 39.9 l 10.02 _ [ _ 10.9 1 4 j 392.400 l 109.00 124.7 j 61 64 1.926 14.70 29.84 12.50 } 2.38 40.0 l _10.01 i i 1.0 29.86 l 12.50 2.38 40.0 {_ _10.00 [ _ 11 O__l j 196.t H 10 110 00 124.5 ! 61 64 1.917 j _14.70_ 29.88 j 12.50 2.38 40.0 l _ { l 1.0_ _j 9.99 199.600 1I1.00 124 3 61.64 _l.90M j 14;70_4 401.200 112 00 124.2 j 61 65 j l.K99 1 14.70 } 29.90 l 12.50 2;38g _ 40.0 [ _ _{. _11.0_ j 9.98 61 65 j _ l.890 14.70 i 29.92 i 12.50 2.38 40.0 j 9.97 l 11.0 406.800 - 111.00 ! 1240, 61.65 ! 1 MMi 14.70 29.94 12.50 !

2. 3M 40.1 9.96 l

11.I ~ i 410.400 114 00 121 M 12.50 f 2.1M 40_I E96 11.1 414.t H Hi 115 00 121 7 61 65 1 871 I4 70 29.96 l 1.1 12.50 j _ 2 38 40.I 11. 9 5 j 417.600, i16 00 121 5 61 66 i 1 M64 I4.70 l _29.98. 12.50 (__218_ ; 40.1 j _ _ 9.94 i 11.1 _ _j 14.70 30 00 421.200 117.00 ; 123 1 61 % _ l M55 " 14.70 i 30.0212.50 ,n 2.38 40.1 9.93 1 11.1 j }i4]O [ 30.04 ] 12.50 [} 424.M00 118.00 i 123.1 61 M 1.847 2[38~~i 40.2 } _ _ 9.92 _j ! I I9.00 123 0 61 66 N38 ^ _ _ 30 05 _ { 2 38 ] 40.2 { _ _ 9.91 _ _ j _ lI.2_ ] 42M.400 ~~ l4.70 12.50 _ l 1.2_ _ j 412.(H N1, 120.00 l22.8 61.67

_ l.M30 11.5 _

i 518.400 144.00 l 120.2 61.71

1.702 14.70 30.33 12.50 j _2.38

_40.5 9.79 _ j , 11.7 9.70 l.610 l 30.53 { 12.50 i 2.38 { _ 40.7_j _ 604.800 16M 00 118 2 6I 74 l _ _14.70 3 691.200 192.00 l16 2 61.77 1.522 14.70 l 30.72 12.50 l 2.38 i 40.8 j_ 9.62 [ l 1.8 [ 2.38. 41.0 ! 9.55 j_ 12.0 _ f( 30.89 __ 12.50 [ _2.38 41.2 9.47 I,2.2 _ _ j 12 50 777.600, 216 00 l 114.1 61 80 1.442 _l 4.7t1 31 06 864.(H HI 240 00 ; i12.3 61 MT 1.362 l4.70 y i RHRICS Calc 25-NOV-97 File = NPSH75.XLS Page 6 of 6 i

CALCULATION SHEET gggg PREPARED BY: PDbb CALC,# M462 CHECKED BY: M 1 l l REV. E3 DATE 25-NOV-97 1 SHEET 100 OF 103 This table contains calculated values of NPSHA and NPSHR for RHR and CS pumps as presented on FSAR Figure 14.5 9. Containment leakage is assumed equal to zero in this calculation. Table 24 - ECCS Pump NPSHA Over a Range of Pool Temperatures and Zero Containment Leakage Core Spray Pump Pc Based on Nitrogen Mass - 16.315 lbm Eq.27 Lookup Eq.19 Eq.21 Eq.22 0% Suppression Pool Leakage CS Temperature Tp Pvp Pc Pgas H/ Hsl NPSHA NPSHR 1 ('F) ( R) (psia) (psia) (fect) (feet) (fect) (feet) (feet) \\ *alues plotted . 6K.E... 130 , 590.0, 2.2230 15.346 30.702 12T. 2.38 40.82 29 140 j,600.0 {, 2.8892 16.235 j 31.311 ._12 5...,_2.38_ g4 l.43 j.,29,,,g 150 j 610.0 J 3.7184 17.286 j 31.931 _ 12.5. 4 2.38 ( 42.05 ' 29 160 ' 620.0 4.7414 18.532 32.557 12.5 i 2.38 42.68 29 166 626.0 5.4623 19.386 32.938 12.5 2.38 43.06 29 I 170 630.0 f 5.9926 20.005 33.195 I 12.5"'l 2.38 43.32 29 180 liidif 7.5110 21.746 ~55Eil~i55 " 2.38 45 96 24 185 645.0 i 8.55f"I~5535i ~E.IfiT ii5 * "2.38 44.29 29 I RIIR Pump Pc Based on Nitrocen Wss in 315 lbm Eq.27 Lookup Eq 19 Eq.21 Eq 22 0% Suppression Pool Leakage RHR Temperature Tp Pvp Pc Pgas He Hsl NPSHA NPSHR ( F) ( R) (psia) (psia) (feet) (feet ) (feet) (feet) (feet) } I 'alues Iidues plotted planed ... +.. H8? F.?) i30 .. 540.0 ! 2 2230 _ _15.346 > 30.702 l 2. 5 3.20 40 00 27 140 ! 600.0 l 2.8892 I 16.235 31.311. 12.5 3.20 . 40.61 27 150 'l 610.0 I 3.7184 i 17.286 31.931"I" 'IE5 3.3U' I 4I?23' $ 2I ! 160 I 620.'O ' 4.7414 "IUE' 55.55I li5' ~ 5.20 I~ 4II6 Y 2I l 166 626;0 i 5;462.[ ..g I4.386 32,438.. I25 3.20 42 24 .E.. 170 630.0 5.9926 ; 20 005. 33 195 12 5 3.20 42.50 27 [.. 180,. .[640 0 Mil 0' [21.56 [33 843, ...[ 43514.[ 2I ] 123 5.2() l ........ I 8 5.._.. ' 645.0 8 3855 ' 22.732 ' 34.171 12 5 3 20 ' 43 47 27

CALCULATION SHEET PREPARED BY: PDN-CALC.# M.442 i Bostors Edisor ' CHECKED BY: h REV. E3 DATE 25-NOV-97 SHEET 101 OF 103 Section 5.0 References 1. FSAR Section 4.8, Residual Heat Removal System 2. FSAR Section 6.4, Core Spray S.,etem ) 3. Regulatory Guide 1.82 Rev.1, " Water Sources for Long-Term Recirculation Cooling Following a Loss-of-Coolant Accident", U.S. Nuclear Regulatory Commission, November,1985 4. GE Report GE-NE-523-A044-0595 5. Bingham Pump Curve No. 27956 and 27763 (Core Spray Pumps) 6. Bingham Pump Curve No. 28457, 28167, 28168, and 28169 (RHR Pumps) 7. Crane Technical Paper No. 410, Crane Co., New York, N.Y.,1981 j 8. Brater & King, Handbook ofHydraulics, Sixth Edition, McGraw-Hill, New York, NY,1976 9. General Electric Report GE-NE-523-A044-0595, "PNPS Decay Heat Removal Capability", May 1995 (SUDDS/RF #95-127 Rev.1) 10. FSAR Section 14.5, Postulated Design Basis Accidents 11. General Electric Report NEDC-31852P Rev.1, "PNPS SAFER /GESTR-LOCA Loss-of-Coolant Accident Analysis",1992 j 12. BECo Calculation N110, Rev. O, "OPL-4 (ECCS Parameters) for SAFER /GESTR-LOCA Analysis for PNPS" 13. Pilgrim ECCS Suction Strainer Data Sheet per Specification M-618 14. CI A363. Rev. E0 "ECCS Suction Strainer Installation Branch Pipes #1 & #2" 15. CI A365, Rev. EO "ECCS Suction Strainer Installation Branch Pipe #3" 16. M100-51-7, " Core Spray System Suction Piping to Core Spray Pump P-215A" 17. M100-54, Rev. E2, " Core Spray System Core Spray Line Rerouting Assembly" 18. M100-256-4, Rev. E2, " Core Spray Critical Piping, S.E. Quadrant Below Elev. 23'-0" 19. M100-52-6, Rev. E2," Core Spray System Suction Piping to Core Spray Pump P 215B" 20. M100-265-4, Rev. E2, " Core Spray Critical Piping, N.W Quadrant Below Elev. 23'-0" 21. M100-251-4, Rev. El, "RHR Nuclear Piping S.E. Quadrant Below Elev. 23'-0"

CALCULATION SHEET PREPARED BY: PD}t O soroaedi CALC.# M462 CHeCxeD Bv: REV. E3 DATE 25-NOV-97 l SHEET l 02. OF 103 22. M100-43-7, Rev. El, "RHR Nuclear Piping, S.E. Quadrant Below Elev. 23'-0" 23. M100-47-8, Rev. El, "RHR Nuclear Piping, NW Quadrant Below Elev. 23'-0" 24 M100-266-3, "RHR Nuclear Piping, N.W. Quadrant Below Elev. 23'-0" 25. M100-262-4, Rev. El, "RHR Nuclear Piping, N.W. Quadrant Below Elev. 23'-0" l 26. M100-42-9, Rev. El, "RHR Nuclear Piping S.E. Quadrant Below Elev. 23'-0" 27. M100-252-4, Rev. El, "RHR Nuclear Piping, S.E. Quadrant Below Elev. 23'-0" 28. M100-47-6, Rev. El, "RHR Nuclear Piping, N.W. Quadrant Below Elev. 23'-0" 29. M100-263-3, Rev. El, "RHR Nuclear Piping, N.W. Quadrant Below Elev. 23'-0" l 30. M100-264-6, Rev. El, "RHR Nuclear Piping, N.W. Quadrant Below Elev. 23'-0" 31. Amendment 9 to License Application Filed June 30,1967 (Docket No. 50-293),03/11/68 32. Amendment 24 to License Application (Docket No. 50-293) 33. FSAR: a) Table 5.2-1 Primary Containment System Principal Design Parameters and Characteristics b) Section 14.5.3.1.2 Containment Response c) Section 14.5.3.1.3 Core Standby Cooling System Pump Net Positive Suction Head d) FSAR Figure 14.5-7 Loss of Coolant Accident Suppression Pool Temperature

Response

e) FSAR Table 14.5-1 Loss of Coolant Accident Primary Containment Response Summary 34. Technical Specifications for Pilgrim Nuclear Power Station: a) Minimum water volume per LCO 3.7.A.I.a. b) Maximum water volume per LCO 3.7.A.I.b. c) Maximum suppression pool temperature during normal continuous power operation per LCO 3.7.A.1.c. d) Minimum differential pressure between drywell and suppression chamber per LCO 3.7.A.1.i. e) Allowable suppression chamber water level range per LCO 3.7.A.l.m. f) Maximum containment leakage rate per surveillance requirement 4.7.A.2.a. I

CALCULATION SHEET PREPARED BY: 9bS-Bostors EdisoFP CHECKED BY: M CALC.# M462 REV. E3 DATE 26 NOV-97 l SHEET 103 OF 103 35. BECo Calculation S&SA-91 Rev. El, " Containment and Decay Heat Removal Analysis Inputs" 36. GE Specification,22A5756, Containment Data, Rev. 3, February 1982 37. GE Report GE-NE-T23 00749-01 " Containment Heatup Analysis with ANS 5.1 Plus 2 Sigma Decay Heat" December 1997 with Transmittal ofData Tables as Attachment, SUDDS/RF # 97-96 38. BECo Calculation M-667 Rev. I "RHR System Hydraulic Analysis" 39. BECo Calculation M-734 Rev. I "RHR and Core Spray Pump Suction Strainer Debris Head Loss NPSH Evaluation" 40. BECo Calculation M-748 Rev. O " Containment Temperature & Humidity Conditions and Nitrogen Mass" 41. PCI Report PCI-NP-PNS-01 Rev. 0 " Suction Strainer Head Loss Analysis" February 1997, SUDDS/RF # 97-48 42. BECo Dwg CI A300 Rev. E0 "RHR/CS Strainer Assembly Drawing" l 43. BECo Dwg Cl A363 Rev. E0 "RHR/CS Strainer Branch Pipe Design" J l 44. BECo Dwg CI A365 Rev. E0 "RHR/CS Strainer Branch Pipe Design" l l Section 6.0 Attachments l l = Independent Verification Statement Record 1 i

CALC M-662 R:V E3 At'achment d. Page 1 of 9 Calculation - Independent Verification Statement Record l Calculation # IHl62, Revision # E3 has been independently verified by the following method (s), 1 as noted below; i Mark each item yes, no or not applicable (N/A) and initial each item checked by you. Design Review neluding verification that: l Design inputs were correctly selected and included in the calculation. ' Assumptions are adequately described and are reasonable. Input or assumptions requiring confirmation are identified, and if any exist, the calculation has been identified as " Preliminary" and a " Finalization Due Date" has been specified. Design requirements from applicable codes, standards and regulatory documents are l identified and reflected in the design. Applicable construction and operating experience was considered in the design. The calculation number has been property obtained and entered. An appropriate design method or computer code was used. A mathematical check has been performed. Thw output is reasonable compared to the input. Attemate Calculation ciuding verification of asterisked items noted above. l The attemate calculation ( 7 pages) is attached. ] Qualification Testing for design feature including verification of asterisked items noted above and the following: . The test was performed in accordance with written test procedures. Most adverse design conditions were used in the test. Scaling laws were established and verified and error analyses were performed, if applicable. Test acceptance criteria were clear 1y related to the design calculation. Test results (documented in ) were reviewed by the calculation Preparer or other cognizant engineer. Independent Reviewer Comments: MP g eg%"fs.WA DWa /286/9> IS/ M. l Independent Reviewer /Date Preparer concunence with /S/ /2-/s-97 l findings and comment resolution PreparIr or Other C6gnizant Engineer a NESD 3.06 Rev 7 Exhibit 3.06-C

' CALC M-662 Rsv E3 ^ Calc M662 RIV 3 Check "h I p,g, Review of Calc M-662 Rev 3 I I WATER PROPERTIES-Cameron Hydraulic Data Vsp ft*/lbm p - lbm/ft' Om/cm centesches conhposses p-abf.sectrt v-ft /sce Pvp-psia Temp F 3 2 2 62.37 0.9991 1.12 1.118992 2.34E-05 1.21E-05 60 62.27 0.9974 0.9 0.89766 1.87E-05 9.69E-06 75 62.22 80 62 0.9931 0.69 0.685239 1.43E-05 7.43E-06 100 ~ ~ ~ 0.016247 61.56 0.986 0.51 0.50286 1.05E-05 5.49E-06 2.223 130 60.79 0.9737 0.38 0.370006 7.73E-06 4.09E-06 170 60.61 0.971 0.364 0.353444 7.38E 06 3.92E-06 178 60.57 0.9703 0.36 0.349308 7.3E-06 3.88E-06 180 60.87 0.392 4.22E-06 166 60.455 0.345 3.71E-06 185 Mo= 7612.601 OK Mw= 8702.102 OK Mrov = 18314.7 OK Strainer Suction Loss @ 5600 Opm = 0.16518, psi OK Should'anio mf DvugtipiA300lC1 A350lC1 A369)lllReEE0 sixi SUDL$t 1RF 97-0487 ^ fBeforences should.be changedjo Revl.E0 M( Devgs_C1A36As l l l l l m Tables 1862 l LReplEEYiordin0 of 47i.R'ElliviIti35fEfsinI6sKlosi'6iisSR45W6sei$ "

oniaechstrainerMandML/DfanguesdMSR,451;a.u

, g Table 3 Velocity = 7.687755 ft/sec for 17.25 pipe id and 5600 Opm flow OK I I Re= 2013698 for 130F and 5600 Opm 18"line OK close to calc value Re= 2419862 for 166F and 5600 gpm 18"line OK close to calc value Re= 2976771 for 185F and 5600 gpm 18"line OK close to cale value l I HL v&f = 1.808977 Eqa 4 for RHR D @ 130F OK HL line = 0.948403 Eqa 5 for RHR D @ 130F OK Teble 4 HL vel = 0.918262 Eqa 2 for RHR D @ 130F OK close to cale value HL suct = 3.15 Eqa 6 for RHR D @ 130F OK close to cale value dp = 1.739925 Ega 7 for RHR D @ 130F OK close to cale value l I Table 5 NPSH4= 38.48143 Eqa 8 for RHR D @ 130F and Pc = 0 OK NPSHu= 11.48 Eqa 9 for RHR D @ 130F and Pc = 0 OK DP IST = 1.91845 Eqa 10 for RHR D @ 130F and Pc = 0 OK Note: Table 4 values for suction loss were rounded up slightly (increased) for input into Table 5 for conservatism. i l I I Table 6/7 Same as Table 5 but at 166 and 185F and not recelcu!ded. It is noted that the max iST DP for the B & C RHR lines could be increased to 1.92 psi and still provide more total margin than the A & D RHR lines. I I l l Page1

CALC M-662 Rev E3 I Calc M662 R;v 3 Check p g, g Review of Calc M462 Rev 3 Table 8 NPSH4= 39.03318 Eqa 8 for CS @ 132F OK NPSHu= 10.03 Eqa 9 for CS @ 132F OK DP IST = 1.818054 Eqa 10 for CS @ 132F OK Checked point of minimum margin. I I I Table 9 Same as Rev 2 Table 8 with minor changes except that suction head loss values have been revised for CS and RHR as recalculated in previous sections. I I I l I MUidtia[liduidtENENedIIbNi/se$~fiiditdi{iss57[ Section 4.C.1 D.. [ h kk Tables 10 & 11 Benchmark same as previous calc rev except tables were numbered 9 & 10. I I l Table 12 max = 0.000767 Eqa 15 - 120000 sec and 1% leakage 65F OK ,= 0.129438 Eqa 16 OK mcas= 0.000679 Eqa 17 OK Mt* = 16208.43 Eqa 18 OK Pc = 15.44869 Eqa 19 OK 1 Notes: for eqa 15 & 16 use Pc and Py from previous step. for eqa 18 used M* from previous step for Mt for eqa 19 used 147000 for drywell volume for conservatism. The symbol for time in eqa 18 should be t instead of T which is used elsewhere for temperature i I I I I I I Table 13 Similar to Table 12 except leakage rate highter and Pc same time as Table 12 is less. I I I I Table 14 Pgas = 30.10803 Eqa 21 for 160000 seconds and 1% leaka0e RHR OK NPSHA = 39.4 Ega 22 OK Pc req. = 9.467813 Eqa 23 OK NPSHm = 12.4 Eqa 24 OK NPSHm = 12.40292 Eqa 24 att OK Table 15 NPSHA = 40.22 Eqa 22 at 160000 see 1% leak CS OK Pc req. = 9.963 Eqa 23 at 160000 sec 1% leak CS OK NPSHm= 11.2 Eqa 24 at 160000 sec 1% leak CS OK I I I Table 16 Similar to Table 14 but highter leakage and NPSH margin less at 160000 sec. I I I I I Table 17 Similar to Table 15 but highter leakage and NPSH margin less at 160000 sec. I I I Table 18 m tag = 0.000844 Eqa 15 - 180000 sec and 1% leakage 75F OK e ,= 0.14307 Eqa 16 OK mcas= 0.000738 Eqa 17 OK Mt* = 16143.34 Eqa 18 OK Pc = 16.26299 Eqa 19 OK Table 19 Similar to Table 18 except 5% leak rate and for same time Mt* and Pc are lower l l l l I I l Page 2

~ - - - ~ CALC M-662 Rsv E3 o(( Cile M662 Rev 3 Check p g, I Review of Calc M462 Rev 3 l l Table 20 Similar to Table 14 but 75F water temperature vs 65F. Pas = 31.08184 Eqa 21 for 180000 seconds and 1% leakage RHR OK 0 NPSHA = 40.39 Eqa 22 OK Pc req. = 10.66971 Eqa 23 OK NPSHm = 13.4 Eqa 24 OK NPSHm = 13.38116 Eqa 24 alt OK Table 21 Similar to Table 20 except for CS NPSHA = 41.21 Eqa 22 at 180000 sec 1% leak CS OK Pc req. = 11.06236 Eqa 23 at 180000 sec 1% leak CS OK NPSHm = 12.2 Eqa 24 at 180000 sec 1% leak CS OK l l l Table 22 Similar to Table 20 but hi0hter leakage and NPSH margin less at 180000 sec. I I I I I I Tabla 23 Similar to Table 21 but highter leakage and NPSH margin less at 180000 sec. I Table 24 Pc = 16.34803 Eqa 19 for 130F OK P0as = 30.69714 OK CSf@ R? RHR NPSHR'anii NPSinshould'refdr 16fisine $~ndt 'flaiire 6?" l l l l i Page 3

Calc M662 Rev 3 Check Equations 12/16/97 Review of Calc M-662 Rev 3 WATER PROPERTIE v vt'/ ibm p-Ibm /ft om/cm' centision r 62.37 0.9991 1.12 62.27 0.9974 0.9 62.22 62 0.9931 0.69 0.016247 61.56 0.986 0.51 60.79 0.9737 0.38 60.61 0.971 0.364 60.57 0.9703 0.36 60.87 0.392 60.455 0.345 Mo= ={(1.3 + 14.696)-{ 0.8* 3.7184))* 132000* 144/53.3/(460+150) Mw= =((14.696H1 0.5961)) 124500*144/53.3/(460+85) Mror = = SUM (C16:C17) Strainer Sudion Loss @ 5600 gpm = =(5600/5100)^2*0.137 Should alsh'hef DwgiCIA300?ciAssoltiAMe~all Rei.'e' " ~ F '~' References should t(changed to.ReWE0 for Dwg5 CI A38.. : ,. m Tables 1&2 l l ,m f6ipl55iwofdiigM 45' IN 80itfIifIC51 tic ~eIBIM5fiitis f"""7'""" -on embh strainer line end the IJD and.K bssd.ls for $R.45Lg x a mm ya 7 o Table 3 g 5 Velocity = =5600/7.4805/60/(17.25 ^ 2* 0.7854)* 144 g a TE k Re= =17.25/12*7.69/G9 - U g.N Re = =17.25/12*7.69/G13 E 3@ Re= =17.25/12*7.69/G14 4S h, w HL v&f =

1.97*(7.69)^2/64.4 HL line

=(0.0158* 94/1.438)*(7.69)^ 2/64.4 Page1

Calc M662 Rev 3 Check Equations 12/16/97 Review of Calc M-662 Rev 3 Table 4 HL vel =

1.81 +0.95+0.39 dp

r{d.92+3.15)*61.56/144 Table 5 NPSH =

12.5-3.2+((14.696-2.223)*144*0.016247) 4 NPSHu

m38.48-27 DP IST = =(((3.2+2)*(2.32/3.2))+0.67)*(62.22/144) Note: Table 4 values for suction loss were rounded up slighti input into Table 5 for conservatism. Table 6/7 Same as Table 5 but IST DP for the B & C total margin than the Table 8 NPSH = =12.5-2.38+((14.696-2.3445)*144*0.016256) A NPSHu=

29.03-29 DP IST

=(((2.38+2)*(1.33/2.38))+1.76)*(62.22/144) Checked point of mini Table 9 Same as Rev 2 Table have been revised for Section 4.C.1 M5ititiElouldEEibeNidE16rs/s55"tsihiidftM7". TPM"F*" 1,. ..c ~.. .. a.: p w a NMMM"MMM4,3= 59.7psisjgggggg 3.a jsgg, y g a Tables 10 & 11 Benchmark same as E h Table 12 mm= =0.001888*((1.(14.7/15.99)

• 2)/(1.(14.7/59.7) ^ 2))^ 0.5 of$

9= =0.621*(2.758/(15.99-2.758)) E y$ m,as=

C65/(C66+1) e Mt*

=16222-((C65/(C66+1))*(120000-100000)) Pc = =((16209*53.3*592.3/(147000+124500))/144)+2.36 Notes: for eqa 15 & 16 use Pc and Py from previous step. Page 2 L

Calc M662 Rev 3 Check Equations 12/16/97 Review of Calc M-662 Rev 3 for eqa 18 used M* from previous step for Mt for eqa 19 used 147000 for drywell volume for conservatism The symbol for time i Table 13 Similar to Table 12 ex Table 14 Pgas =

30.1+12.5-3.2 Pc req.

=1.88+((27-12.5+3.2)*61.65/144) NPSHm =

30.1+12.5-2.38 Pc req.

=1.88+((29-12.5+2.38)*61.65/144) NPSHm =

40.2-29 Table 16 Similar to Table 14 b Table 17 Similar to Table 15 b Table 18 mm

=0.001888*((1 -(14.7/16.31 ) ^ 2)/(1 -(14.7/59.7)^ 2))^ 0.5 ,= =0.621*(3.054/(16.31-3.054)) mou = =C911(C92+1) Mt* = =16146-((C91/(C92+1))*(180000-176400)) Pc = =((16144*53.3*601.7/(147000+124500))/144)+3.02 o ? D O Table 19 Similar to Table 18 ex S >f 423 on 9,, y Table 20 Similar to Table 14 b Q @g Pgas =

(16.26-3.02)*144/61.34 NPSHA

=31.09+12.5-3.2 m Pc req. = =3.02+((27-12.5+3.2)*61.34/144) NPSHm =

40.4-27 NPSHm

=(16.26-10.56)*144/61.34 Page 3

Calc M862 Rev 3 Check Equations 12/16/97-Review of Calc M-662 Rev 3 Table 21 Similar to Table 20 ex NPSHA =

31.09+12.5-2.38 Pc req.

=3.02+((29-12.5+2.38)41_.34/144) NPSHm =

(C116-2.223)*144/61.56 NPSHA

m30.7+12.5-2.38 g gggyapwiew emmgsprp7mmmm;rtwsypgr"wegggggyp"emwegmgg o o m F e O >E ell 8 9 9 "f .ai 4a< -. m w Page 4

Calc M862 Rev 3 Check Equations 12/11W97 i l 2 cargo.es p-ibfd v-R /sec Pvp psia Temp F =C5*D5 =EST.0000206854 =D51.0000107639 60 =C6*D6 =E61.0000208854 =D61.00001G7639 75 80 3C8*D8 =E81.0000208854 =D81.0000107639 100 =C9*D9 =E91.0000208854 =D91.0000107639 2.223 130 =C10*D10 =E101.0000208854 =D10T.0000107639 170 =C11*D11 =E111.0000203854 =D111.0000107639 178 t =C12*D12 =E121.0000208854 =D121.0000107639 180 =D13*0.0000107639 166 1 =D1410000107639 185 5 + 1 tjyg'WN*]M*Ty{W^1ypWyQEMFK]MyW;p%ca pabMi343Gn M$k%$3SEMNIE4fik W^AlsI2s'# & w pQ$ f ly p*MDic.MPd'y:p y y9g g g?Cig g 'Wm <t%'-;%gunc??@M$ 7 g 7 N f Q7 ]yp{ %{ N J % 4: n-Als4$GE&T @6 M ag w? ne:l e &g& iss M %elinisAW8h Sfik sAdaddd5 E'WJHinG N;Nvibn2nde 4 -, -ss (., < s E t ,7 'n 7 ~>' c.- s <s-. we s $O *r s Aces /. / E' " yo. v y's Ds ( ) x <w

• S

<r b s M s [ <v. Wv f ?Mm ' Ass s& O t i r-e$. 0 4Ig~ o-3.:o 8< 4 *3 m -s u e E I Pa0e 5 r i

BECo Calculation M-734, Rev. 2 I l 1 l i 1 l l l l l l l' i I l l}}