ML20217C391

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Rev 1 to L-001166, Post LOCA Control Room,Auxiliary Electric Equipment Room & Offsite Doses
ML20217C391
Person / Time
Site: LaSalle  Constellation icon.png
Issue date: 06/12/1997
From: Boarini P, Esperanza E, Mcqueen D
COMMONWEALTH EDISON CO.
To:
Shared Package
ML20217C365 List:
References
L-001166, L-001166-R01, L-1166, L-1166-R1, NUDOCS 9710010376
Download: ML20217C391 (32)
v • d • e


Text

_ ..____. . . _ _ _ _ _ _ _ _ _ _ . _ _ _ . . . _ _ _ _ _ _ _ _ _ _ . _ . _ _ . . _ . _ _ _ _ _ _ _ . _ .

i

! ATTACHMENT E

! LASALLE COUNTY NUCLEAR POWER STATION

!, UNITS 1 AND 2 j FACILITY OPERATING LICENSES

!- NPF-11 AND NPF-18 I APPENDIX A TECHNICAL SPECIFICATIONS 1

i l VENTILATION FILTER TESTING PROGRAM i

i

CALCULATION L-001166, REVISION 1, " POST LOCA CONTROL
ROOM, AUXILIARY ELECTRIC EQUIPMENT ROOM, AND l OFFSITE DOSES," DATED SEPTEMBER 12,1997 i

l

}-

I l

9710010376 970926 PDR ADOCK 05000373 P PDR i

- . - - . .- - . . - . - . . - . - . . - . - - - . - - - . . = . - . - -

COMED NUCLEAR DESIGN INFORMATION TRANSMITTAL

' O SAFETY-RELATED Onginating Organizaten .

NDIT No.: LAS.ENDIT 0422 O NON-SAFETY RELATED Secten: HVAC Upgrooe: 1 O REoutAToRy REtATED Comp.ny: Sar,.nt a Lunay Page 1 of 1 i

Staten: LaSalle County Units: 0,1,2 System: To: Ricohermoso, Eusebio P. . Comed, DE M Design Change Authonty No N/A VC Subsect Mixed Air Relative Humidity Calculation

- w9 Boannt Paul M.

preserer HVAC Engineer Poemort

( / k

  • D 9/12/97 De=
Esperanza. Efren R HVAC Engineer

% 9/12/97 o,,

McQueen. Donald L Senior Prom Engineer

- - [ _ [3 9/12/97 wy j -

Status of Information: C Approved for Use O unverin.d v.nneet.n u.thod N/A 4

Engineennn Judgement -

Schedule j

Purpose of issuance Transmtr.al of Calculation No. L-001119, Rev.1 Dated September 12,1997, for use.

1 4

r Source of information Calculation No. L-001119, Rev,1. Dated Septemoer 12,1997.

4 a

i 4

Description of Information 1 Calculation L 001119 Revision 1 was prepared to determine the relatrve humidity of retum air entenng the OVC01FAIFB and OVE01FA/FB cnarcoal filter units. As a result of this calculation, the maximum relative humidity was determined to be 67.53% in the normat and emergency operabng modes in the purge mode, the relative humidity rnay exceed the maximum allowable value of 70% if j the ouarde air humidity is greater tnan 70% RH See Attachment A for assumpoons and methodology used in this analysis.

Attachment A:

Calculaton L-001119. nev'acn 1. 02ed 9/12/97. 66 pages (29 of 29 plus Attachments A-F)

Distrioution: SEAG Hall Richard R. . Comed. DE-M Blattner.Jerome W Sargent & Lundy, MPED #

Comed Microfilming Home OfL:e WIN No.: 2807

_. _- _ _ . _ ._ _ _ ._._. . _ . . . . . . _ _ . _ . _ _ - ~ _

COMMONWEALTH EDISON COMPANY 2

C/1CULATION TITLE PAGE y ALCULATION NO.: L-001119 P A G E N o .: 1 W

g SAFETY RE!,ATED D REGULATORY RELATED D NON SAFETY RELATFD

CALCULATION lilLE; VC/VE MIXED AIR RELATIVE HUMIDITY CALCULATION i

STAIlON/UNII: La Salle Units 1 &2 SYSIEM ABBREVIATION: VC

] EQUIPMENT NO.: m mu N/A PROJECT NO.: m mu i

. LEV: 6 STAT 05: Ajijir~iveT- VA SDUXLTO ORUNONNE------ ITATE-~~~~~~~---~

- x ,

PREPARED BY:

Paul Boari6<1 7 -

DATE: 7-/s-97 REVISION

SUMMARY

InitialIssue '

1 l

i ELECTP.ONIC CALCULATION DATA FILES REVISED:

iName ext / size /date/active X:\e&cgrp\snl\hvac\cales\ hour:\L001119.

min / verification doc method / remarks)

DO ANY ASSUMPTIONS IN THIS CALCULATION REQUIRE LATER VERIFICATION YESO

/

l REVIEWED BY: YY

/ / /

DATE: , d b l't 7 REVIEW METHOD: COMMENTS (C, NC OR CI): CI

APPROVED BY
h(!,4b he B+ IWAc.,, DATE: 7 -1 6 '17 CL4 aCCSPS%iF0eM%4tP134t.tDor

%K

_ . . . _ . ~ . . _ . . . ___

l COMMONWEA1,TH EDISON COMPANY CALCULATION REVISION PAGE summmmmmmmmmerm CALCULATION NO.: L-001119 PAGE NO.:1.1

REV:1 STATUS: Approved QA SERIALJJO,J$fQm_ON NO. DATE:

PREPARED BY:

Paul M Boarini -

I DATE: 9 12-97

, REVISION

SUMMARY

The following pages were trvised.

1 1.1 -29 <

Al - A27

, Attachment "F" was added t,o the calculation '

i

~

ELEC1RONIC CALCULATION DAI A FIL'iS REVISED: ~

(Name ext / size /date/hou't: min / verification method / remarks)

K:\e&cgrp\ sal \hvac\a::tive\cales\ LOO 1119R2. doc i

i DO ANY ASSUMPTIONS IN THIS CALCULATION REQUIRE I.ATER VERIF REVIE\ 'E Y: Rov C Hu n u$ '

DATEP- />-9 L REVIEWMETHOD: Detailed COMMENTS (C, NC OR CI): CI T

r 1

APPROVED BY: Don L. McQueen J DATE: 9-M 97 M

Cute (ChP4MLWOAwWstMtMtW E I3

COMMONWEALTII EDISON COMPANY CALCULATION TABLE OF CONTENTS CALCULATION NO. L 001119 PROJECT NO. PAGE NO.

2 DESCRil' TION PAGE NO. SUB-PAGE NO.

Title Page 1

b Revision Summary 1.1  !

1 Table of Contents

, 2 1.0 Purpose / Objective 3 2.0 Methodology / Acceptance Criteria 4-9

^

3.0 Assumptions 10 4.0 Designinput 13 5.0 References 12-13 6.0 Calculations 14 - 26

(

7.0 Summary 27 Conclusions Reconunendations 28 29 8.0 Attachments A, B, C, D, E, F A1 - A27 B1 - B5 C1 - C1 D1 D1 E1 El F1-F2 REVISION NO.1 m

I h@S kPd %dettelstest484 tot

-t ,3 a

a

COMMONWEALTH EDISON COMPANY gl.CULATION NO. L-001119 PROJECT NO. PAGE NO. 3 1,0 PURPOSE The pumose of this calculation is to determine if the relative humidity entering the control room recirculation filter unit (0VC01FA/B) and the auxiliary electric equipment room recirculation filter unit (OVE01FA/B) will be controlled to less than 70%. The calculated entering humidity for the OVColFA/B and OVE01FA/B will provide the basis for the relative humidity at which samples of used carbon, from the filter units, are tested per ASTM D3803 89 Standard Test Method for Nuclear Grade Activated Carbon.

I G

1 REVISION NO.1 l

um.mw m.m e g,, ,

3

COMMONWEALTH EDISON COMPANY i CALCULATION NO L-001119 PROJECT NO. l PAGE NO. 4 2.0 METHODOLOGY 2.1.1 The diagram shown in figure 1 below illustrates the air flow path boundary of the Main Control Room HVAC System design / measured air flow rate which has been applied in this calculation to determine the mixed air relative humidity entering the supply air charcoal filter unit 0VC01FA/B.

EMU / 1Ai = $$.2 CFM 04 = 394J.: cru 1ntake Filter o = nu . vi s El h .vcoacAte i cru " n cr=

s.r..: oA rein 4eos crM IA, = 1.93: crM :A 3= 7 CFM

, l 2

r.ra,M o. o o Recire / ovconcArn j'

4 hovco2 cars ^

n Filter E2 RA I OVC01FA/15 i SA 22,895 ~

3 44s crM ~ ~ ~ ~ ~ T)o crit 26,340 CFM ,! . - CFM Main Control _ 24.o20 crM P Room 2320 CFM

p MSCC

Firure 1 2.1.1.1 The approach of this calculation is to determine the mixed air relative humidity level at different conditions.

Condition VC.1) the calculation will range from the design supply air flow of 26.340 CFM to 18.000 CFM with Outdoor make-up air of 1500 CFM at 95'F db / 78'F wb with Infiltration Air at 104'F db/80'F wb and lleturn Air at 73*F db / 50% 0, (NORMAL CONDITION . EMU OFF)

Conditlun VC 2) the c.ticulation will range from the design supply air flow of 26.340 CFM to 18,000 CFM wit.h Outdoor inkke.up air of 1300 CFM at 95'F db / 95'T wb with infiltration Air at 104'F dbl 95.5'T wb and Return Air at ITF db / 50% 0, (NORMAL CONDITION . EMU OFF)

Condition VC 3) the calculation will range from the design supply air flow of 26.340 CFM to 18.000 CFM with Outdoor make up air of 1500 CFM at 95'F db / 95'F wb with infiltration Air at 104'F db96.5'F wb and Return Air at 77F db / $0% 0. (EMERGENCY PLANT CONDITION EM Condition VC 4) the calculation will range from the design supply al. flow of 26.340 CFM to 18.000 CFM with Outdoor makemp air of 1500 CFM at 95'F db / 95'F wb with infiltration Air at 104'F ibl96.5'T wb and Return Air at 85'F db ! $0% 0. (NORMAL CONDITION . EMU OFF)

~

REVISION NO.1 l

- l m . m ., ._ , ~ ._

3

COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001119 PROJECT NO. l PAGE NO. 5 2.1.2 he diagram shown in figure 2 below also illustrates the air flow path boundary of the Auxiliary Electric Equipment Room HVAC System design / measured air flow rate which has been applied in the body of this calculation to determine the mixed air relative humidity entering the supply air charcoal filter unit 0VE01FA/B.

1As = $$.2 CFM O 4 = 394J.8 CFil Imake Fmer El

/

evcurs h ~ n em c7w in w smai.

~

MuA poo cru poocru Normet 04 Peth 4000 CFM fg 1Ai = 1939 CFM IA = 6 CFM Puree Mode  ; se tru Recirc i Filter E2 aevmco RA OVE02CND

. SA 13.83$ Exfiltration 2.172.3 CFM g , , OVE0lFA/B g 18.300 CFM / 366 CFM CFM Un'at 1 AUX Electric _ 9.100 CFM e

Equipment Room 100

_ Unit 2 AleX Electric 9.100 CFM p Computer

~

~ CFM y Equipment Room

  • 3 Room .

\ nitranon Es 2.172.5 CFM Firure 2 2.1.2.1 The same methodology as 2.1.1.1 has been applied to the Auxiliarv Electric Equipment HVAC system.

Condition VE.1) the calculation will range from the design supply air flow of 18,300 CFM to 14,000 CFM with Outdoor make up air of 2500 CFM at 95'F db / 78'F wb with infiltration Air at 104'F db/80'F wb and Return Air at 80'F db / $0% 0. (NORMAL CONDITION . EMU OFF)

Condition VE.2) the calculation will range from the design supply air now of 18.300 CFM to 14.000 CFM i

with Outdoor make up air of 2500 CFM at 95'F db / 95'F w b with infiltration Air at 104'F db/96.5'F wb and Return Air at 80'F db / 50% 0. (NORMAL CONDITION . EMU OFF)

Condition VE.3) the calculation will range from the design supply air flow of 18.300 CFM to 14.000 CFM with Outdoor make up air of 2500 CFM at 95'F db / 95'F wb with infiltration Air at 104'F db/9d.5'F wb

. and Return Air at 80*F db / 50% 0 (EMERGENCY PLANT CONDITION. EMU ON)

Condition VE.4) the calculation will range from the design supply air flow of 18.300 CFM to 14.000 CFM with Outdoor make up air of 2500 CFM at 95'F db / 95'F wb with infiltration Air at 104'F db/96.5'F wb and Retum Air at 85'F db / 50% 0 (NORMAL CONDITION . EMU OFT)

REVISION NO.1 -

l k 4acCRPa%W0445'48P.slettDoc

%E 3

,3

COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001119 PROJECT NO. l PAGE NO. 6 2.2.0 The mixed air relative httmidity calculation is performed using design, test and physical

data as appropriate.

1 2.2.1 P(in Hg) = 29.08 in Hg at 786 ft elevation (Ref. 5.1 page 6.1 Table 1) 2.2.2 P(psia) = (14.696 psia / 29.921 in Hg) x 29.08 in Hg = 14.283 psia -

2.2.3 Equations applied in this calculation are obtained from equations in the ASHRAE Handbook of Fundamentals 1989 and the Handbook of Heating, Ventilating and Air Conditioning, Stroke & Koran.

2.2.4.0 Conditional air flow rates:

2.2.4.1

- Tabulated air flow rates (CFM) will be used in each four VC condition to determine th respective relative humidity level.

VC Systegl Outdoor Air infiltration VC Syntam

) -

SA QA lA +1A3' B4 26,340 1,500* " 1,945 22,895

" 24,000 1,500* " 1,945 20,555

" 22,000 1,500* " 1,945 18,555

" 20,000 1,500 " ' 1,945 16,555

" 18,000 1,500 " ' 1,945 14,555 Prenarer's Note:

  • VC Design Air Flow Rates (CFM)

" VC conditional air flow rates are derived by varying the supply flow rate by a decrease of 2000 CFM for each condition.

"* To be consistent with the simplified diagram,1500 CFM is a combination ofIA which is coming from within the Auxiliary Building and the air drawn from the outside atmosphere.

Eumnle For VC Desien Sunniv Air Flow:

VC System SA = Design flow (CFM) and/or selected value VC System RA = VC System SA - 1,500 CFM (OA) 1,945 CFM (IA: + IA 3

)

VC Outdoor Air (OA) = 1500 CFM (Ref. 5.9.d)

VC Makeup Air Infiltration (IAi ) = (Fm) = 55 CFM (Ref. 5.10)

VC Infiltration (IA) = (Fi c) = (IA: + IA )3 = 1,945 CFM See Attach. F, pg. F1 (Ref. 5.11)

VC Total Infiltration = (IA: + IA3 + IA )i = 2,000 CFM Se'e Attach. F, pg. F1 (Ref. 5.11)

VC Exfiltration = IA3 + IA: + OA = 3,445 CFM

! REVISION NO.1

.mu m mmen. e 33 3

_y, _

f T-

COMMONWEALTH EDISON COMPANY CALCULATION NO. L -001119 PROJECT NO. PAGE NO. 7 2.2.4.2 The tabulated air flow rates (CFht) will be used in each four VE condition to determine their respective relative humidity level.

VE System Outdoor Air ja0.luatlED W BrElsAR 16 QA lA; + IA , l 30 18,300 2,500' " 1,945 .:13,85$ .

" 17,000 2,500* " 1,945 -12,995-

" 16,000 2,500* " 1,945 cil $55

" 15,000 2,500' " 1,945 4 M,S$$

" 14,000 2,500 " ' I,945 9,$$$ -

Preparer's Nott l

I

  • VE Design Air Flow Rates (CFhi)

" VE conditional air flow rates are derived by varying supply air flow rate by a decrease of 1000 CFht for each condition.

"' To be consistent with the simplified diagrain,2500 CFht is a combination ofIAi which is coming from within the Auxiliary Building and the air drawn from the outside air.

I Eumple For VE Desien Sunply Air Flow:

l VE System SA = Design flow (CFht) and/or selected value VE System RA = VE System SA - 2,500 CFhi (OA)- 1,945 CFhi (IA2 + lA3)

VE Outdoor Air (OA) = 2500 CFhi (Ref. 5.9.d)

VE h1akeup Air Infiltration (IAi ) = (Fai) = 55 CFht (Ref. 5.10)

VE Infiltration (I A) = (Fu2) = (IA2 + IA3) = 1,945 CFht See Attach. F, pg. F2 (Ref. 5,11)

VE Total Infiltration = (IA + 2 I A3 + I Ai) = 2,000 CFht See Attach. F, pg. F2 (Ref. 5.11)

VE Exfiltration =.!At+ IA 2+ OA = 4,345 CFhi

'2.2.5 The Excel" Goal Seek" command will be used to' determine the required wet bulb :

temperature (tora) for an overali energy mixed air Relative liumidity (Oos) percent Error Oor .m, = 0.

2.2.6 The following symbols will be used throughout to identify values. The subscripts clarify l

each symbol's identity, its magnitude, or its physical state, REVISION NO. 1 u maem=== u .a.oc ge ke=6,ese 3

COMMONWEALTH EDISON COMPANY CALCULATION NO. L 001119 PROJECT NO. l PAGE NO. 8 .-

n.6.i j

Symbol Descrintion Lhnlu ACFM Volumetric Air Flow Rate (Actual) Cubic Feet / Min. Ft'/ Min

! C Constant CFM Volumetric Air Flow Rate (Standard) Cubic Feet / Min, Ft'/ Min EMU Emergency Make up Air EFF EfDelency F Air Flow Rate Cubic Feet / Min h Enthalpy BTU /lb. dry air HP Horsepower i

IA Infiltration Air Cubic Feet / Min in naturallog i

KW Kilowatt i

OA Outdoor Air Cubic Feet / Min OE Overall Energy ~

P Pressure in, of Hg Pw Partial Pressure of Water Vapor Pws Saturation Pressure of Water Vapor (psia)

Q Heat Transfer Rate or Load BTUH or Bru/hr RA Return Air Cubic Feet / Min SA Supply Air Cubic Feet / Min V Specific Volume ft'/lb. dry air VC Control room Ventilation VE Aux. Electric Eq. Rm Ventilation W Humidity Ratio  %

Ws Humidity Ratio at Saturation  %

0 Relative Humidity Percent, %

t Temperature Fahrenheit 'F or Rankine *R Wet Bulb Related EXP Exponent REVISION NO.1 so n - m m. e 34

.!3

COMMONWEALTH EDISON COMPANY CALCULATION NO. L 001119 PROJECT NO. PAGE NO. 9 2.2.6.2 Subscrints Dgscrintion l db Dry Bulb cale. calculated Error Error EMU Emergency Make up Air EMUHTR Emergency Make up Air Heater f final IA Infiltration air OA Outside air RA Return Air l RF Retum Fan SA Supply air SF Supply Fan total Total VC Control Room Ventitation System wb Wet Bulb 1,2,3 Infiltration air identifiers 8,9,10 constant identifiers 11,12,13 constant identifiers 2.2.7.0 ACCEPTANCE CRITERI At 2.2.7.1 The mixed air relative humidity entering the charcoal filter units OVC01FA/B and OVE01FA/B is to be < 70% if the charcoal is to be tested at 70%, otherwise the charcoal will be tested at 95% relative humidity.

o l REVISION NO.1 o..cc mm mu.a c

%( 3 3 m3

COMMONWEALTH EDISON COMPANY  !

CALCULATION NO. L 401119 l PROJECT NO. l PAGE NO.10 3.0 ASSUMPTIONS 3.1.1 Per Ref. 5.12 the VC supply air leaves the cooling coils at SS.l'F db! $2.2'F wb. A $0%

relative hurnidity is achieved at a dry bulb temperature of 69'F db. With the Main Control Room and the Main Security Control Center (VC) return air temperatures of 73'F db and 85'F db, the use of a retum air relative humidity of 50% is conservative.

! 3.1.2 Per Ref. 5.13 the VE supply air leaves the cooling coils at $3.9'F db! 52.4'F wb. A 50%

relative humidity is achieved at a dry bulb temperature of 71*F db. With the Main Control Room and the Main Security Control Center (VC) retum air temperatures of 80'F db and 85'F db, the use of a retum a!r relative humidity of 50% is conservative.

3.2' The Load Factor for all retum fans (0VC02CA/B) and (0VE02CA/D) along with the 1

Emergency Make Up fans (0VC03CA/B) in operation will be equal to one.

3.3 During an Emergency Plant Condition, the Emergency Make Up fan (0VC03CA/B) is to Operate continuously. For conservatism the Use Factor for the EMU fan in operation will be equal to one.

3.4 The EMU fan OVC03CA/B operates at 100% efficiency increasing the sensible load and increasing the calculated relative humidity.

3.5 The Infiltration Air (IA)in Conditions VC/VE - I are based on the Design outdoor air of 95'F db!78'F wb sensibly heated across the Auxiliary Building HVAC Equipment Room to the design maximum room air temperature of 104* F db with an approximate wet bulb temperature of 80' F. Infiltration rates of 2000 CFM have been conservatively chosen to bound the maximum acceptable inleakage values of 1200 CFM for the VC system and 1600 CFM for the VE system.

(Ref. 5.11) 3.6 The infiltration Air (IA)in Conditions VC/VE 2,3,4 are based on bounding saturated outdoor air of 95'F dbl 95'F wb sensibly heated across the Auxiliary Building HVAC Equipment Room to the design maximum room air temperature of 104' F db with an coproximate wet bulb temperature of 96.5* F. Infiltration rates of 2000 CFM have been conseniatively chosen bound the maximum acceptable inleakage values of 1200 CFM for the VC system and 1600 CFM for the VE system.

(Ref. 5.11) i REVISION NO.1 '

l m.m_~.-._

COMMONWEALTH EDISON CEMPANY CALCULATION NO. L-001119 PROJECT NO. l PAGE NO. I1 4.0 DESIGN INPUT 4.1 Design Conditions:

(Ref. 5.8)

Site Elevations, approximately 700 ft above sea level VC Equipment Elevation, approximately 786 ft above sea level Site Location: La Salle County 111.,6 miles southwest of Marseilles,111 (41

  • Lat., 89'Long Summer Outdoor Design Air Temperature, tor = 95 *F db,78 *F wb Summer Room Design Temperature, MCR/MSCC:

tuo, = 73 'F,45 % Ou (Ref. 5.8, table 3.11 24)

Summer Room Design Temperature, AEER:

tudb = 80 'F,45 % Ou (Ref. 5.8 table 3.11 25) 4.2' Air Flows:

4.2.1 VC System A.

l VC System Total Supply Air, CFMs4 = 26,340 CFM (Ref. 5.9)

B. VC Outdoor Air, CFMo4 = OA + lA = 1,500 CFM (Ref. 5.9)

C. VC System Exfiltration = 3445 CFM *

(Ref. 5.10, 5.11)

D.

VC Infiltration Air (IA: + IA 2+ IA)) = 2,000 CFM (" Attach. F") (Ref. 5.10,5.11)

E. VC Retum Alt, CFMu = (SA OA IA) = 22,895 CFM (Refer to section 2.2.4.1)

  • l This value is adjusted to balance the assumed maximum infiltration of 2000 CFM, 4.2.2 VE System F. VE Supply Air, CFMs4 = 18.300 CFM (Ref. 5.9)

G. VE Outdoor Alt, CFMo4 = OA + IA: = 2,500 CFM (Ref. 5.9)

H. VE Exfiltration - 4,345 CFM *

(Ref. 5.10, 5.11)

1. VE Infiltration (IA: + IA2+ IA )3 = 2,000 CFM (" Attach. F") (Ref. 5.10,5.11)

J. VE Total Retum Air, CFMu = (SA - OA IA) = 13,855 CFM This value is adjusted to balance the assumed maximum infiltration of 2000 CFM.

REVISION NO.1 -

M ,atchre%WOtu,W At#44stof i.33

COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001119 PROJECT NO. l PAGE NO.12

5.0 REFERENCES

5.1 1989 ASHRAE Handbook of Fundamentals 5.2 Handbook of Heating, Ventilating and Air Conditioning, Strock & Koral.

5.3. Calculation VC-3, Rev. O "Eqdpment Specifications of VC System" 5.4 ButTalo Forge Co. Performance Curve for fan OVC03CA/B

' 5.5 Joy Fan Curve C 5105 Series 2000 Model 38 26-1770, 0VE02CA/B Axivane Fan 5.6 Joy Fan Curve C-1285 Series 1000 Model 38171770, 0VC02CA/B Axivane Fan 5.7 Design Criteria:

a. DC-VA-01 LS, Rev. 0,"Auxill&ry Building Office NAC System"
b. DC VC-01 LS, Rev. O," Control Room HVAC System"
c. DC-VE-01 LS, Rev. 5," Auxiliary Electric Equipment Room HVAC System

5.8 Updated Final Safety Analysis Repon (UFSAR), Sec. 9.4, and Table 3.11 24/25 Rev.5 5.9 Design Drawings 1

n.

Architectural Drawing A 191, Rev. AH," Auxiliary Building Main Floor Plan, Unit 1 El. 768'-0".

b.

Architectural Drawing. A-191, Rev. AN," Auxiliary Building Main Floor Plan, Unit 2, El. 768' 0".

c.

Architectural Drawing. A-181, Rev. WX," Auxiliary Building Reflected ceiling Plan, El. 768' 0".

d. Mechanical Drawing M 1443, Sheet I through 4,"P&lD Control Room A/C Sys."

Sheet 1. Rev. L, Sheet 2. Rev. K. Sheet 3 Rev. K, and Sheet 4, Rev. A.

5.10 NDIT No.: LS 0570 " Control Room and Auxiliary Electric Equipment Room (AEER)

HVAC Systems Unfiltered inleakages.

5.11 Calculation L - 001166 Rev.1,912 97, " POST LOCA CONTROL ROOM, AUXILIARY ELECTRIC EQUIPMENT ROOM, AND OFFSITE DOSES').

REVISION NO.1

. . . . ~ , . . ~ , . , _

l t 2

-,3

COMMONWEALTH EDISON COMPANY CALCULATION NO L 001119 PROJECT NO. l PAGE NO.13 5.12 Vendor Drawing Number 285W404513 Rev. A,7-16 76, Canier Speciacation Sheet for VC Cooling Colts OVCO2ANB.

5,13 Vendor Drawing Number 28SW404523 Rev. A,716 76, Carrier Specification Sheet for VE Cooling Colls OVE01 AA/B.

0 4

i P.EVISION NO.1 l

OCafGRNtLdpawm9tP16414Dof Lebetes E 3

COMMONWEALTH EDISON COMPANY CALCULATION NO. L 001119 PROJECT NO. l PAGE NO.

6.0 CALCULATIONS 6.1.0 Condition VC 1) Determine the Mixed Air Relative Humidity with a range from the design supply air flow of 26,340 CFM to 18,000 CFM with the retum air at 73'F DB / 50% RH, Outdoor make up air of 1500 CFM at 95'F DB / 78'F WB and infiltration air at 104'F db /

80'F wb. (NORMAL CONDITION EMU OFF) 6.1.1.1 Using the air now diagram (fig.1) in section 2.1.1 the Retum Air humidity, will be determined. All air Dows are shown in actual condition.

l 6.11.2 3 " Standard Atmospheric Data For Altitudes to 60,000 ft." the barometric pressure (Pod at the Auxiliary HVAC Equipment Room elevation of 786 feet equals:

Po4 = 29.080 in Hg. x 14.696 psia / 29.92 in Hg = 14.283 psia (Ref. 5.1, pg. 6.1 table 1) 6.1.1.3 Outside Air 1 With a given dry bulb temperature 95'F, determine the naturallogarithm of the saturation pressure over liquid water as follows:

4 -

3 In (Pwsor) = C / t,.6 + C, + C ioto, + Cnt,32+C 2,3 t + Cn in(t,6) (Ref. 5.I page 6.12 Eq. 4) where the Pwso4 constants (Cs.i3) equal:

C = -1.0440397E+04 C, =

-1.1294650E+0!

=

Co i -2.7022355E 02

=

Cn 1.2890360E 05 Cn = 2.4780681E 09

=

Cn 6.5459673E+00 in =

Naturallogarithm Pwsor -

Saturation pressure, psia

=

to3 Outdoor Air absolute temperature, 'R = 95'F + 459.67 = 554.67'R in (Pws o 4) = ( 1.0440397E+04/554.67'R) + ( 1.1294650E+01) 2.7022355E 02 x 554.67'R + ((1.2890360E 05 x (554.67'R) ) + ( 2.4780681E 09 x (554.67'R)') +

(6.5459673E+00 x in554.67'R)

In (Pwso4) = -0.203039688 (psia) 6.1.1.4 S wso4 (psia) = EXP(!n Pwso4)

Fw;a4 (psia) = EXP(-0.203039688 ) = 0.816245846 (psia) 6.1.1.5 Determine the dry bulb Saturation Humidity Ratio (Wso 4) (Ref. 5.1, pg 6.12. eq. 21)

REVISION NO 1 _

k e M NMnN

COMMONWEALTH EDISON COMPANY l I

CALCULATION NO. L-001119 PROJECF NO. PAGE NO.15

{

Wsor = 0.62198 (Pws 4o /(Po4(psia) Pwsor))

Wso4 = 0.62198 (0.816245846 (pslay(14.283 psia 0.816245846 psla)

Wsor = 0.037700255 6.1.1.6 Determine the natural logarithm of the saturation pressure over liquid water for the given Outdoor Air wet bulb temperature of 78'F = 537.6R:(P*wsor). (Ref. 5.1, pg 6.12, eq. 4) o In (P*ws 4) = ( 1.0440397E+04/537.67'R)'+ (-1.1294650E+01) 2.702 537.67'R + ((l.2890360E 05 x (537.67'R) ) + ( 2.4780681E-09 x (537.67'R)') +

(6.5459673E^00 x in537.67'R)

, in (P*ws o4) = -0.744228082 (psla)

P*wsm (psia) = EXP( 0.744228082 psia) = 0.475100897 (psla) 6.1.1.7 Determine the wet bulb saturation Htunility Ratio (W*sor) -(Ref. 5.1, pg 6.12, eq. 21)

W*so4 = 0.62198 (P'wso 4 (psla)/(Po4(psia)- P'wsor (psla))

W*so4 - 0.62198 x (0.475100897 psiay(14.283 psis 0.475100897 psla)

W*sor = 0.021401501 6.1.1.8 Determine the Humidity Ratio (Wor) (Ref. 5.1, pg 6.13, eq. 33)

W'or = ((1093-0.556to4 ) x W*sor 0.240 (tor to4 ))/(1093 +0.444to4 - to4 )

tor = 95'F dry bulb tor * = 7B'F wet bulb W*o4 = ((1093 0.556 x 78'F) x 0.021401501 - 0.240 (95'F 78'F))/(1093 + (0.444 W*or = 0.017389376 6.1.1.9 Determine the outdoor air water vapor partial pressure (P*wo4) for the moist air sample:

P'w o4 = (Po4 x W*or ) / ( 0.62198 + W'ox) (Ref 5-1, pg 6.13, eq. 34)

P' war = (l4.283 psia x 0.017389376)/( 0.62198 + 0.017389376)

P*w o4 = 0.388456461 psia 6.1.1.10 Determine the Relative Humidity (Oor) (Ref. 5.1, pg 6.12, eq 22.)

004 = P* wor /Pwsor 004 = 0.388456461 psia /0.816245846 (psia) 004 = 47.591%

, o 6.1.1.11 Determine the specific volume (Vor) ft'/lb of dry air (Ref. 5.1, pg 6.13, eq. 26)

RE%ilON NO.1 l u .n.. m e... . e

COMMONWEALTH EDlSEN COMPANY CALCULATION NO. L-001119 PROJECT NO. PAGE NO.16 3

Vor (ft /lb dry air) = (1545.32 x tor) x ( 1 + 1.6078 x W*oA) / (28.9645 x Por x 144) 3 Vor (ft /lb dry air) = (l545.32 x 554.67'R) x (l + 1.6078 x 0.017389376)/( 28.9645 x 14.283 psia x 144) 3 Vor = 14.79 ft /lb dry alt 6.1.1.12 Determine the moist air enthalpy (bor) BTU /lb dry air (Ref. 5.1, pg 6.13, eq. 30.)

har = 0.240 tor + W'or (1061 + 0.444 tor) ho4 = (0.240 x 95'F) + (0.017389376 x (l061 + (0.444 x 95'F)))

ho4 = 41.98 BTU /lb 6.1.2.0 Calculate the Main Control Room return air properties with an initial dry bulb of 73'F db (532.67'R) and a relative huaildity O = 50%.

6.1.2.1 MCR Return Air: With a given dry bulb temperature 73'F(532.67'R), determin: the natural logarithm of the saturation pressure in (Pwsu) overliquid water as follows:

In (Pws u) = C: / t,3 + C, + C intos + C ti ,32 +Ci2to38 + C I 3 n(t43) (Ref 5.1 page 6.12 Eq. 4) where the Pws uconstants (Cs.i3) equal:

C =

1.0440397E+04 C, =

1.1294650E+01

=

Co i 2.7022355E 02 Ci =

1.2890360E 05 Ci =

-2.4780681E 09 C i3 =

6.5459673E+00 in =

Naturalicgarithm Pws u =

Saturation pressure, psia

=

to3 Return Air absolute temperature, 'R = 73*F + 459.67 = 532.67'R in (Pwsu) = 1.0440357E+04/532.67'R + 1.1294650E+01 3

+ 2.7022355E 02 x 53 (l.2890360E 05 x 532.07'R ) + (-2.4780681E 09 x 532.67'R ) + 6.5459673E+00 x In532.67'R in (Pwsu) = -0.910882876 (psia) 6.1.2.2 Pwsu (psia) = EXP(In Pwsu)

Pwsu (psia) = EXP( 0. 910882876 ) = 0.402169002 (psia) 6.1.2.3 Determine the water vapor partial pressure (Pwu) for the moist r:ir sample:

REVISION NO.1 -

4 Ce(Chhl44464,IlttlN4414 DOC h P(3J3

COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001119 PROJECT No. l PAGE NO.17 Pwu = Pwsu xOw (Ref. 5 1, pg 6.12, eq. 22) l Pwu =0.402169002 (psia) x .50 Pwu = 0.201084501 psia 6.1.2.4 Determine the return air Humidity Ratio (Wu) (Ref. 5.1, pg 6.12, eq. 20)

Wu = 0.62198 (Pwu /(P (psia)- Pwu)) l Wu = 0.62198 (0.201084501 ps'ia)/ (l4.283 psia 0.201084501 psia)

Wu = 0.008881834 l

6.1.2.5 Determine the natural logarithm of the saturation pressure over liquid water (P*wsu) for an assumed Return Air wet bulb temperature of 60'F = $19.67'R. Using the % error command for Excel, the wet bulb temperature will be more precisely adjusted later. (Ref. 5.1, pg 6.11, eq.

In (P*wsu) = .1.0440397E+04/519.67'R + -1.1294650E+01 3

+ 2.7022355E 02 x 519 (1.2890360E 05 x 519.67'R') + -2.4780681E 09 x 519.67'R + 6.5459673E+00 In (P'wsu)= 1.361232526(psia)

P*wsu (psia) = EXP( 1.361232526*psla) = 0.256344631 (psla) 6.1.2.6 Determine the wet bulb saturation Humidity Ratio (W*su) (Ref. 5.1, pg 6.12, eq 21)

W*su = 0.62198 (P*wsu (psia) /(P (psia)- P'wsu (psla))

W*su = 0.62198 x (0.256344631 psia)/(14.28.i psia 0.256344631 psia)

W*su = 0.011367204 psia 6.1.2.7 Determine the Humidity Ratio (W*u) (Ref. 5.1, pg 6.13, eq. 33)

W'u = ((1093 0.556tu*) x W*su - 0.240 (tu- tu*))/(1093 +0.444tu tu')

tu = 73'F dry bulb tu* = 60'F wet bulb W*u = (1093-0.556 x 60'F x 0.011367264 0.240x (73'F - 60*F))/(1093 + 0.

W*u = 0.008377236 6.1.2.8 Determine the water vapor partial pressure (P*wu) for the moist air sample:

P*wu = (P x W'u ) / ( 0.62198 + W*u) (Ref. 5 1, pg 6.13, eq. 34)

P*wu = (14.283 psia x 0.008377236)/( 0.62198 + 0.008377236)

P*wu = 0.1898162739 psia f

6.1.2.9 Determine the Relative Humidity (Ow) (Ref. 5.1, pg 6.12, eq 22.)

REVISION I10.1 l -

l S

COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001119 PROJECT NO. l PAGE NO.18 Om = P'wu /Pwsu  !

Om = 0.1898162739 psia /0.402169002 (psla)

Om = 47.198%

6.1.2.10 Determine the return air Relative 11umidity error (0,,,).

O,,,=Om Ow '

O,,, = 47.198% 50%

0,,, = 2.802 6.1.2.11 Using the Excel " Goal Seek" command, the computer adjusted the originally assumed retum

' air wet bulb temperature of 60'F for 0,,, to be equal to zero. Sections 6.1.2.5 6.1.2.10 were run with the adjusted wet bulb temperature of 60.78'F. the results were as follows:

t,$ u = 60.78' F = $20.45'R In(P*wsu)= 1.333325608

, P'wsu (psia) = 0.263599175 W'su = 0.011695006 W*u = 0.008881723 P'wu = 0.201082022 Om = 49.999%

0,,, = Om Om = 49.999% 50% = -0.001%

6.1.2.12 Determine the specific volume (Vu) in ff/lb dry air (Ref. 5.1, pg 6.13, eq. 26)

Vu = (1545.32 x tos u) x ( 1 + 1.6078 x W'u)/ (28.9645 x P x 144)

Vu = 1545.32 3 x 532.67' x (1 + 1.6078 x 0.008881723)/( 28.9645 x 14.283 Vu = 14.02 (ft /lb dry air) 6.1.2.13 Determine the moist air enthalpy (hu) in BTU /lb dry air (Ref. 5.1, pg 6.13, eq. 30.)

hu = 0.240 tog u + W*u (1061 + 0.444 tob u) hu = (0.240 x 73'F) + (0.008881723 x (1061 + (0.444 x 73'F)))

hu = 27.23

! REVISION NO.1 l

once .w-, m e fut 3 3

COMMONWEALTH EDISON CsMPANY CALCULATIONNO L 001119 PROJECT NO. PAGE NO.10 6.1.3.0 Calculate the Main Control Room innitration air (IA) properties with a dry bulb temperature of104'F db / 80'F wb.

6.1.3.1 Infiltration Air: Determine the natural log of the saturation pressure over liquid water.

In (Pwsa) = C / to.i4 + C, + Ci ota,a + Clito,a' +C itto,a +3 C 1n i3 (tos a) where the Pwsaconstants (Cs.i3) equal: (Ref. 5.1 page 6.12 Eq. 4)

C =

1.0440397E404 C, =

1.1294650E+01

=

Co i 2.7022355E 02

=

Cai 1.2890360E 05 C 12

  • 2.4780681E-09 C i3 =

6.5459673E+00 in = Naturallogarithm Pwsa= Saturation pretsure, psia t,6 a = Infiltration Air absolute temperature, 'R = (Db)'F + 459.67 In (Pws a ) = 1.0440397E+04/563.67'R 1.1294650E+01 2.7022355E 02 x 563.67'R +

1.2890360E 05 x 563.67'R' 2.4780681E 09 x $63.67'R' + 6.5159673E+00 x in563 in (Pwsa) = 0.068480612 (psia) 6.1.3.2 Pwsa(psia)= EXP(in Pwsa)

Pwsa (psla) = EXP(-0, 068480612 psla) = 1.070879862 (psia) 6.1.3.3 Determine the water vapor partial pressuie (Pwa) for the moist air sample:

Pwa = Pwsa x Oui (Ref. 5 1, pg 6.12, eq. 22)

Pw n = 1.070879862 (psla) x 36% (Omifrom psychrometric chart at 104'F db/80'F wb)

Pwa = 0.38551675 psia 6.1.3.4 Determine the ret'trn air Humidity Ratio (Wa) (Ref. 5.1, pg 6.12, eq. 20)

Wa = 0.62198 (Pwa /(P(psia) Pwa ))

Wu = 0.62198 (0.38551675 psia)/ (14.283 psia - 0.38551675 psia)

Wa = 0.017254128 psia o

REVISIONNO 1 l

mm-._ .. -

t 3

. ,3

COMMONWEALTH EDISON COMPANY l l

CALCULAT[ON NO. L-001119 PROJECT NO. l PAGE NO. 20 6.1.3.5 Determine the natural logarithm of the saturation pressure over liquid water (P'ws a ) for an Infiltration Air wet bulb temperature of 80*F = 539.67'R. Using the % error command for  ;

l Excel the wet bulb temperature will be more precisely adjusted later. (Ref. 5.1, pg 6.11, eq.

In (P'wsa) = 1.04403')7E+04/539.67'R 2

-1.1294650E+01 2.7022355E 02 x 539.67'R +

(1.2890360E-05 x 539.67'R ) 2.4780681E 09 x 539.67'R' + (6.5459673E+00 In (P'ws a ) = -0.678546332 (psia)

P'wsa (psia) = EXP( 0.678546332 psia) = 0.507353981 (psia) 6.1.3.6 Determine the wet bulb saturation Humidity Ratio (W'sa) (Ref. 5.1, pg 6.12, eq. 21) 4 W*sa = 0.62198 (P'wsa(psla)/(P(psia) P'wsa (psia)))

W's a = 0.62198 x 0.507353981(psia)/(14.283 psia 0.507353981 psla)

W'sa = 0.022907 psia 6.1.3.7 Determine the Humidity Ratio (W'g) (Ref. 5.1, pg 6.13, eq. 33)

W'a = ((l093-0.556ta*) x W*sa 0' 240 (ta ta*))/(1093 + (0.444ta) ta*) l ta = 104'F dry bulb ta' = 80'F wet bulb W*a = ((1093 0.556 x 80'F) x 0.022907 - 0.240 x (104'F - 80'F))/(1093 + (0 80'F)

W*a = 0.017239233 6.1.3.8 Determine the watet vapor partial pressure (P*wa ) for the moist air sample:

P'wa = (P x W* ) / ( 0.62198 + W'a) (Ref. 5 1, pg 6.13, eq. 34)

P*wa = (14.283 psia x 0.017239233)/( 0.62198 + 0.017239233)

P*wa = 0.385201 psia 6.1.3.9 Determine the Relative Humidity (Om) (Ref. 5.1, pg 6.12, eq 22.)

Oa = P

  • wa / Pws a Ga: = 0.385201 psia /1.0708M" psia Oa: = 35.97%

6.1.3.10 Determine the infiltration air Relative Humidity percent erro* (0,,,,,).

O r,,o,

  • Oa2
  • O IAI 4

0,no, = 35.97% 36%

0,,,o, = 0.03 %

REVISION NO.1 w e n .uom m.m e E 3

,I

COMMONWEALTH EDISON COMPANY CALCULATION NO. L -001119 PROJECT NO. PAGE NO. 21 6.1.3.11 Using the Excel " Goal Seek" command, the computer adjusted the originally assumed Relative Hu'nidity Oui = 36% for 0,,,,, to be equal to zero with ta, = 104'F and ta a = 80'F. '

Sections 6.1.3.5 6.1.3.10 were run with the computers adjusted Relative Humidity Oa. ,

tm4 = 80' F = 539.67'R in(P*wsa)= 0.678546332 P'wsa (psla) = 0.507353981 W*sa = 0.022907891 W*a = 0.017239233 P'wa = 0.385192918 Oa - 35.070%

0,m,, = Oro Oai = 35.970% 35.970% = 0.000%

6.1.3.12 Determine the specific volume (Vu)in ft3 /lb of dry air '(Ref. 5.1, pg 6.13, eq. 26)

Va = (1545.32 x ta) x ( 1 + 1.6078 x Wa) / (28.9645 x P x 144)

Va= (1545.32 x 563.67') x (1 + 1.6078 x 0.017239)/( 28.9645 x 14.283 x 144)

Va= 15.03 (ft'/lb dry air) 6.1.3.13 Determine the moist air enthalpy (ha) in BTU /lb dry air (Ref. 5.1, pg 6.13, eq. 30) ha = 0.240 to, + Wa (1061 + 0.444 t,3) ha = (0.240 x 104'F) + (0.017239 x (1061 + (0.444 x 104'F)))

ha = 44.05 6.2.0 Determine System Equipment Loads 6.1.1 '

Determine the Return Fan (0VC02CA/B) load Qu (BTU /hr)

Qu (BTU /hr) = 2545 x (BHP /Eff) x Load Factor x Use Factor (Ref.5.1)

The Load Factor will be equal to one.

(see sect. 3.2)

HP and EFF Use Factor values will be determined from (Ref.(?) 5.4,5,6)

The Use Factor values will be 1.0 per (Ref. 5.3)

Qu (BTU /hr) = 2545 x (31 BHP /0.62) x 1.0 x 1.0 = 127,250 BTU /hr

! REVISDN NO.1 muwm,.ammim e L 2

- ,1

COMMONWEALTH EDISON C MPANY l

A CALCULATION NO. L-001119 PROJECT NO. l PAGE NO. 22 6.2.2 For Emergency Phat Conditions, determine the Emergency hiake Up fan (0VC03CA/B) load.

Qtuu(BTU /hr)= 2545 x BHP uu t x Use Factor x Load Factor (Ref.5. i)

The EMU Use Factor will be equal to one with 100%. efficiency (see sects. 3.3 &3.4)

BHP and Load Factor values will be determined from Reference 5.4.

The plant mode for Condition VC 1 is nonnal plant operation, therefore OVC03C operating and Qtuu " O BTU /hr.

4 6.2.3 Fc c ..mergency Plant Conditions, detennine the Emergency Make Up Air Duct lleater los 1. The plant mode for Condition VC 1 is normal plant operation, therefore the l

Err ergency Make Up Air Duct Heater is not operating and Qtuu = 0 BTU /hr.

6.2.4 Calculate the Energy Balance Flow Terms for the Return Air (RA), Outdoor Air (OA),

infiltrat'on Air (IA), and Make Up Air (VC).

6.2.4.a Qu = 4.5 x Fu xhu (Ref. 5.1)

Qu = 4.5 x 22,895 CFM x 27.23 BfU/lb, dry air Qu = 2,805,581 BTU /hr 6.2.4.b Qor = 4.5 x For x har (Ref. 5.1)

QoA = 4.5 x 3,945 CFM x 41.98 BTU /lb. dry air Qor = 745,314 BTU /hr 6.2.4.c Qai a 4.5 x Fai x ha (Ref 5.1)

Q, i =. .5 x $5 CFM x 44.05 BTU /lb dry air Qai = 10,902 BTU /hr 6.2.4.d Q a = 4.5 x F a xha (Ref. 5.1)

Qa: = 4.5 x 1,945 CFM x 44.35 BTU /lb. dry air Qa: = 385,520 BTU /hr I 6.2.5 Case VC 1 is nonnal plant operation, therefore OVC03CA/B is not operating htuu = 0 6.2.6 Qvc = 4.5 x Fruu x houu (Ref 5.1)

Qve = 4.5 x 4000 CFM x 0 = 0 BTU /hr

[ REVISION NO.1 l t l

,3

COMMONWEALTH EDISON COMPANY a

CALCULATION NO. L 001119 PROJECT NO. PAGE NO. 23

. 6.2.7 Calculate the Emergency Make Up Vapor Balance W t uuo f the mixed air: 3945 CFM (OA) and 55 CFM (lA). Condition VC 1 is normal plant operation, therefore OVC03CA/B is not operating. Wtuu = 0 6.3.0 Using the Overall Energy Balance (OE) calculate the final mixed air relative humidity enter the chaxoal filter housings (OVC01FA/B).

6.3.1 Determine the overall energy mixed air enthalpy (hot) hot = Qw /(4.5 x CFM ic,w)

(Ref. 5.1) hoc = (Qu + Qiu + Qve + Qar)/(4.5 x Fsr) hot = (2,805,581 + 385,520 + 0 + 127,250)/4.5 x 26,340 CFM = 27.99587 BTU /lb dry air l 6.3.2 Determine the overall energy mixed air vapor pressure (Woc) i Woc = (Fi x Wi + F2x W: ...+ Fr xWr)/Fu,w (Ref. 5.1)

Wot = (Fu x W u + Fve x Wrwu + Fi u x W ix)/Fst

' Woc = (22,895 x 0.008881723 + 0 x,0 + 1,945 x 0.017239233)/26,340 l

Wot = 0.00899 BTU /lb dry air 6.3.3 Determine the overall energy mixed air, water vapor partial pressure for moist air (Pwoc)

Pwot (psia) = P x Wot /(0.62198 + Wot) (Ref. 5.1, pg 6.13, eq. 34)

Pwot (psia) = 14.283 (psla) x 0.00899 /(0.62198 + 0.00899) -

Pwot (psia) = 0.203569755 6.3.4 Determine the overall energy mixed air dry bulb temperature (toco3) tordb = (hot - 1061 x Wot)/(0.24 + 0.444 x Woc) (Ref. 5.1, pg 6.13, eq. 30) toga 3 = (27.99587 - 1061 x 0.00899)/( 0.24 + 0A44 x 0.00899) totob = 75.63'F

13.5 Determine the overall energy mixed air saturation pressure Pwsor (psia).

] For a given dry bulb temperature, determine the natural logarithm of th: saturation pressure over liquid water as follows:

3 in (Pwsot) = C / ton + C, + C oti 43 +ii C te3 2 +Cuto3 + Cu In(to3) (Ref. 5.1 page 6.11 Eq. 4) where the Pwsor constants (Cs.u) equal:

I l REVISION NO.1 -

u.c-mm ir,-a.oe

COMMONWEALTH EDISSN COMPANY CALCULATION NO. L-001119 PROJECT NO. PAGE NO. 24 6.3.5 (cont.d)

C =

-1.0440397E+04 C, =

-1.1294650E+01 Co=

i 2.7022355E 02

=

Cn 1.2890360E-05 C t2 = -2.4780681E-09 '

=

Cu 6.5459673E+00 in = Naturallogarithm

=

Pw$or Saturation pressure, psia

=

to. Absolute temperature, 'R = 75.63'F + 459.67 = 535.30'R in (Pwsoc) = 1.0440397E+04/535.30'R + -1.1294650E+01 + 2.7022355E-02 x 535.30'R + 1.2890360E 05 x 535.30'R' + (-2.4780681E-09 x 535.30'R') +

6.5459673E+00 x In535.30'R in (Pwsoc) = -0.8227823085 (psla) ,

6.3.6 Pwsot (psia) = EXP(In Pwsog) = EXP(In 0.8227823085)(psia)

Pwsos (psia) = 0.439207941 (psia) 6.3.7 Determine the overall energy mixed air Relative Humidity Oot (Ref. 5.1)

Ootes = Pwog /Pwsog 00 43 = 0.203569755 (psia)/ 0.439207941(psia)

Ootdb*4b*34N 6.3.8 Using a psychrometric chan determine the approximate overall energy mixed a'r wet bulb temperature. (tog,3 'F).

Use tor,3 = 60'F 6.3.9 Convert tos.3 *F to 'R tot.b (*R) = 60 'F + 459.67 (Ref. 5.1, pg 6.11) tor 3 ('R) = 519.67'R i REVISION NO.1 oucs-mm mm.oc 3

COMMONWEALTH EDISON COMPANY CALCULA rION NO. L-001119 PROJECT NO. l PAGE NO. 25 6.3.10 eetermine the overall energy mixed air natural logarithm of the saturation pressure over li water for the wet bulb temperature : (Ref. 5.1, pg 6.11, eq. 4) 8 In (P*ws o g4) = C / togo + C, + i C o gro + C tote +C i

3 toto + Ci3 in(toto)

In (P*wsog4) = ( 1.0440397E+04/519.67*R 1.1294650E+01)- 2.7022355E 02 x 519.67*R + (l.2890360E-05 x (519.67*R)2) +) +(-(2.4 ,

(6.5459673E+00 x in$19.67*R) in (P*wsoc4)= 1.361232526(psia)

P'wsoco (psia) = EXP(in P*wso go)

. P'wsos,6 (psla) = 0.256344631 6.3.11 Determine the overall energy rnixed air wet bulb saturation Humidity Ratio o (W's go).

W*sogos = 0.62198 (P'w's og% psia) / (P(psia) P'wso to(psla)) (Ref. 5.1, pg 6.12, eq. 21)

W*s og% = 0.62198 x 0.274025928(psia)/(14.283(psia)- 0.274025928(psia))

W*sor ,3 = 0.011367 6.3.12 Determine the overall energy mixed air Humidity Ratio (W*og,5). (Ref. 5.1, pg 6.13, eq. 33 W*og,3 = ((1093 0.556toco*) x W*sorwb - 0.240 (tot. tor,5 ))/ (1093 +0.444 toga - tog,5*)

W*oto -((1093-0.556 x 60*F) x 0.011367-0.24(75.63*F-60*F))/(1093 +0.

W'oro = 0.007776 l

6.3.13 Determine the overall energy mixed air water vapor partial pressure oP*w ftwb or the moist air.

P*wogo = (P x W*or.b )/ ( 0.62198 + W*ot.b) (Ref. 5 1, pg 6.13, eq. 34)

P*w og 3 = (14.283 psia x 0.007776)/( 0.62198 + 0.007776)

P'w oga = 0.17636 6.3.14 Determine the overall energy mixed air Relative Humidity (Oct.>)

Oogo = P*wogo /Pwsog 3 (Ref. 5.1, pg 6.12, eq. 22)

Oogo = 0.17636 psia /0.439207941 psia Goga = 40.15%

6.3.15 Calculate the overall energy mixed air Relative Humidity (Oot mor) Percent Error Oct er,o," Ootdb

  • Ootwb Oog mo, = 46.34% - 40.15%

Oog eno, = 6.19%

i i

REVISION NO.1 l I 3 1

COMMONWEALTH EDISON COMPANY l

CALCULATION NO. L-001119 PROJECT NO. l PAGE NO. 26 l

6.316 Using the Excel " Goal Seek" command, the computer adjusted the originally assumed '

wet bulb temperature of 60'F for Oot , to be equal to zero. Sections 6.3.9 6.3.15 were run with an adjusted wet bulb temperature of 61.88'F. the results were as follows:

tot

  • wb = 61.88' F = 521.55'R q In(P'ws og,5) = .l.294504933 P'ws t.g o (psla) = 0.274033496 W*su = 0.012166997 W*ot,3 = 0.008997056 Pw'or,$ = 0.203655926 Oot = 46.37%

Oot ,, = 0.017%

6.4.0 The results for the seven remaining cases were computer generated with the same 4

methodology. For the results see ATTACHMENT A.

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l REVISION NO.1 LCatcaraseonwsmem a n eac teh.hu t

COMMONWEALTH EDISON COMPANY '

CALCULATION NO. L-001119 PROJECT NO. l PAGE No. 27 7.0 SUhth1ARY CONCLUSIONS and RECOhlh1ENDATIONS 7.1

SUMMARY

Cond. VC-1 Cond, VC 2 Cond. VC.3 Cond. VC-4 VC SYSTEM Design Min. Design Min. Design Min. Design Min.

SA SA SA SA SA SA SA SA CFM CFM )

CFM CFM CFM CFM CFM CFM 26,340 18,000 26.340 18,000 26,340 18,000 26,340 18,000 OVC01FA/B ENTERING AIR 0% 46.37 44.87 53.89 55.46 52.36 51.88 52.08 53.03 OVC01FA/B Entenng Air Temp (db) 75 63 76.81 75.72 76 93 82.19 86.36 86.07 86.54 OUTDOOR AIR Temp. (db)/(wb) 95'F Db/78'F Wb 95'F Db/95'F Wb 95'F Ob/95'F Wb 95'F Db/95'F WD RETURN AIR Temp. (db) / RH% 73'F Db / 50% 73'F Db / 50% 73'F Db / 50% 85'F Db / 50%

RETURN Air CFM 22.895 l 14.555 22.895 l 14.555 22.895 l 14.555 22.895 l 14.555 INFILTRATION Nr 104'F db/ 80*F wb 104*Fdb/96.5'Fwb 104' Fab /96.5'Fwb 104*Fdb/96.5'Fwb INFILTRATION CFM 2000 l 2000 2000 l 2000 2000 l 2000 2000 l 'O PLANT CONDITION NORMAL NORMAL EMERGENCY NORLA'L EMU FAN / COIL OPERATION OFF OFF OPERATING OFF Cond. VE.1 Cond. VE 2 Cond. VE 3 Cond. VE 4 VE SYSTEM Design M'n. Design Min. Design Min. Design Min.

SA SA SA SA SA SA SA SA CFM CFM Cr . CFM CFM CFM CFM CFM 18,300 14,000 18,300 14,000 18,300 14,000 18,300 14,000 OVE01FA/B ENTERING AIR 05 51.18 53.85 61.56 67.53 52.57 53.50 60.63 66)

OVE01FA/B Entenng Air Temp. (db) 51.16 53.22 76.93 ~

75.02 92.31 95.08 80.81 78.61 OUTDOOR AIR Temp, (db)/(wb) 95'F Db/78'F Wb 95'F Db/95'F Wb 95'F Db/95'F Wb G5'F Ob/95'F WD RETURN AIR Temp. (ab)/ RH% BO'F Db 150% 80*F Db / 50% 80'F Db / 50% 85'F Do / 50%

RETURN AIR CFM 13.855 l 9.555 13.855 l 9.555 INFILTRATION Air 13.855 l 9.555 13.855 l 9.555 ,

104'F ab/ 80*F wb 104'Fdb/96.5'Fwb 104*Fdb/96.5'Fwb 104'Fdb/96.5'Fwb INFILTRATION AIR CFM 2000 l 2000 2000 l 2000 2000 1 2000 2000 l 2000 PLANT CONDITION NORMAL NORMAL EMERGENCY NORMAL EMU FANICOtt OPERATION OFF OFF OPERATING OFF 1

REVISION NO.1 l

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4 COMMONWEALTH EDlSON COMPANY CALCULATION NO. L-001119 PROJECT NO. PAGE NO. 28

7.2 CONCLUSION

S The four conditions studied for the VC system were as follows:

(1) design outdoor air under normal plant operau. n, retum air 73'F db/50% RH, and an infiltration rate of 2000 CFM at 194'F db / 80% RH.

(2) 95'Fdb/95'Fwb outdoor ejr under normal plant operation, retum air 73'F db/50% RH, and an infiltration rate of 2000 CFM at 104'F db / 96.5'F wb.

i (3) 95'Fdb/95'Fwb outdoor air under emergency plant operation, retum air 73'F db/50% RH, '

and an infiltration rate of 2000 CFM at 104'F db / 96.5'F wb. I (4) 95'Fdb 95'Fwb outdoor air under normal plett operation, return air 85'F db/50% RH, and an infiltration rate of 2000 CFM ut 104'F db / 96.5'F wb.

The four conditions studied for the VE system were as follows:

(1) design outdoor air under normal plant operation, retum air 80'F db/50% RH, and an infiltration rate of 2000 CFM at 104'F db / 80% RH.

(2) 95'Fdb/95'Fwb outdoor air under normal plant operation, retum air 80*F db/50% RH, and an infiltration rate of 2000 CFM at 104'F db / 96.5'F wb.

(3) 95'Fdb/95'Fwb outdoor air under emergency ple::t operation, retum air 80*F db/50% RH, and an infiltration rate of 2000 CFM at 104*F db / 96.5'F wb.

(4) 95'Fdbl95'Fwb outdoor air under emt:rgency plant operation, retum air 85'F db/50% RH,

(

and an infiltration rate of 2000 CFM at 104*F db / 96.5'F wb.

The purpose of this calculation was to determine if the relative humidity entering the recirculation filters was less than 70%. This calculation showed that under the boundlag conditio'is identified in this calculation for normal VC/VE system operation, the relative humidity would be less than 70%,(56% RH for VC and 68% for VE). The significance of the normal mode of operation on the performance of the charcoal is that it could reflect the initial condition of the charcoal at the beginning of an accident. The calculation also showed that for the bounding VC/VE emergency pressurization conditions, the relative humidity would be less than 70%, (52% RH for VC and 54% for VE). The relative humidity entering the VC/VE filters in the emergency pressurization mode is well below the acceptable criteria of 70% relative humidity providing a significant margin between the bounding emergency operating conditions and the conditions at which the charcoal is tested.

One case which was not analyzed in this study is the 100% outdoor purge mode. During the purge mode, the relative humidity of the air entering the charcoal filter for the VC and VE systems will be equal to the outdoor air conditions.

REVISION NO.1 '

e co m u m m e. e 30 u ,3

COMMONWEALTH EDISON COMPANY CALCULATION NO. L-001319 PROJECT NO. PAGE NO. 29 7.2 RECOMMENDATIONS The station procedures that control the operation of the VC/VE systems in the purge mode need to be revised to include restricticas on the use of the purge mode when the outside air relative humidity is above 70%. The restrictions should address the effects of the relative humidity exceeding 70% on the operability of the recirculation charcoal filters.

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4 l REVISION NO.1 '

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