ML20205N640
| ML20205N640 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 06/30/1985 |
| From: | DUQUESNE LIGHT CO. |
| To: | |
| Shared Package | |
| ML20205N638 | List: |
| References | |
| NUDOCS 8605020224 | |
| Download: ML20205N640 (200) | |
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')-6 DUQUESNE LIGHT COMPANY Beaver Valley Plant Units 1 and 2 Difference Analysis I ' '5; June, 1985 I
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rs l l l UNIT 1/2 DIFFERENCE ANALYSIS ' A Unit 1/2 Difference Analysis was done to support the dual licensability ; of Unit 1 and 2 Operators. The Difference Analysis identifies those system differences which could affect the Control Room Operator's ability to make operating and emergency decisions. All differences in safety-related systems, Control Room panels, emergency shut-down panel, and auxiliary shutdown panels were reviewed. However, only signi-ficant differences were included in this report. The analysis identifies the difference by describing the Unit 1 and Unit 2 arrangements, categorizing the difference as being safety related or not, and stating the position of Duquesne Light Company as to why the difference is acceptable in terms of the dual licensing concept. -c The following safety related systems were not included in this report because these systems are classified as being similar: Chapter 2 Reactor Excore Instrumentation Chapter 3 Reactor Incore Instrumentation Chapter 20 Fuel Pool Cooling and Purification Chapter 35 Main Generator - Chapter 47 Containment Technical Specifications, FSAR Accident Analysis, Control Room layout differences are also included. BVPS-2 Tech. Specs. however, are continuously being revised to be like BVPS-1 Tech. Specs. and will continue to be revised up to near fuel load. Procedures difference analysis is not included.. A preliminary survey of all procedures available including alarm response procedures indicated no need for a detailed analysis. Any approved procedure, when followed, would minimize operational err 6r. Operational Characteristic differences are not ' included in
- this volume and will be done separately.
Note: The word " instrumentation" used in the Dif ference Analysis represents controls and indications. . l I i
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DUQUESNE LIGHT COMPANY ,, , Beaver Valley Plant Units 1 and 2 Difference Analysis (h~)N w Table of Contents Page Miscellaneous 1 Chapter 1 - Reactor Control and Protection 2 Chapter 6 - Reactor Vessel 4 Chapter 6 - Reactor Coolant Pumps 5 Chapter 6 - Pressurizer - 6 Chapter 6 - Pressurizer Relief Tank 8 Chapter 6 - Reactor Coolant System 9 Chapter 7 - Chemical Volume and Control System 11 Chapter 8 - Boron Recovery System 14 Chapter 9 - Reactor Plant Vents and Drains System 18 Chapter 10 - Residual Heat Removal 20
- Chapter 11 - Safety Injection Signal (SIS) 23 V2x_,/ Chapter 11 - Components Activated on SIS 24 Chapter 11 -
High Head Safety Injection 26 Chapter 11 - Low Head Safety Injection
- 28 Chapter 11 - Accumulator Subsystem 30 Chapter 11 - Accumulator and LHSI Subsystem 31 Chapter 11 - Transfer Cold Recirculation to Hot 32 Recirc21ation Phase Chapter 11 -
Transfer to Cold Recirculation Phase - Auto 33 Chap::r 11 - Transfer to Cold Recirculation Phase - Auto, 34 Manual Chapter 12 - Radiation Monitoring Subsystem 35 Chapter 12 - Pressure Monitoring Subsystem 36 Chapter 12 - Containment Vacuum Pumps Subsystem 38 , Chapter 12 - Temperature and Moisture Instrumentation 40, Chapter 13 - RWST and Related Components 42 Chapter 13 - Chemical Addition 44 Chapter 13 - Chemical Addition / Quench Spray Subsystem 46 O Chapter 13 - Quench Spray Subsystem 47 () Chapter 13 - Quench Spray / Recirculation Snray Subsystem 50 Chapter 13 - Recire Spray Subsystem 53
- Chapter 13 - CIB 55
J( ,/ Chapter 14A - Reactor Plant Sampling 56 Chapter 14C - Post Accident Sampling 59 , Chapter 15 - Reactor Plant Component Cooling 60 Chapter 16 - Supplemental Leak Collection and Release 64 System Chapter 17 - Liquid Waste 67 Chapter 19 - Gaseous Waste 70 Chapter 21 - Main Steam 75 Chapter 24 - Feedwater 77 Chapter 25 - Steam Generator Blowdown 79
~h Chapter 25 - Main Turbine and Condenser 80 i l
Chapter 30 - Service Water 84 Chapter 33 - Fire Protection 88 Chapter 34 - Compressed Air 89 Chapter 36 - 4KV Distribution 92 Chapter 37 - 480V Sy. stem 96 Chapter 38 - 120 VAC 98 n
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125 VAC 100 Chapter 43 - Radiation Monitor 101 Chapter 44A - Control Room Ventilation 102 Chapter 44C - Containment Ventilation 104 Chapter 44D - Auxiliary Building Ventilation 106 Chapter 44F - Miscellaneous Ventilation (Diesel Generator 108 Building, Emergency Switchgear, Intake Structure) Chapter 44G - Condensate Polishing Building Ventilation System 109 , Chapter 45A/B - Loose Parts Monitoring / Seismic Monitoring 110 Chapter 45D - Heat Tracing 111 Chapter 45E - Electric Fault Recorder 112 Chapter 46, - Post DBA Hydrogen Control 113 , Control Room Status Panel 119 Benchboard Section A Pan'els 122 Ver,tical Board Section A Panels 136 Benchboard Section B Panels 148
- Vertical Board Section B Panelo 152 Benchboard Section C Panels 153
_ _____m__. _ . . . . . - . _ _ _ . _ _ _ _ . _ _ _ _ . r ..., 3. s j Page,. 4
- Vertical Board Section C Panels 157 Building Service Panel 170 Emergency Shutdown Panel (ESP) 174 Alternate. Shutdown Panel (ASP) 175 Technical Specifications 176
- i. FSAR Accident Analysis 191 I
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f U DUQUESNE LIGHT COMPANY U BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM /COMPCNENT Miscellaneous Safety Unit 1 - Unit 2 Related Comments The Stone and Webster valve oper- Yes ating number diagrams (VONDS) (operating manual flow diagrams) a nd a ssoc i a ted symbo l s a re d i f fe r-ent between Unit 1 and Unit 2. The valve system designations in Yes The system / components a re dif ferent, ,- Uni t 2 a re not the same as in however, they serve the same function ( Unit 1. and will be operated in accordance - with approved procedures. This will i minimize any chance of operational
, e r ro r.
The Genera l physica l layout of Yes Although locations are different, the Unit 2 is di f ferent from Unit 1. components still serve the same function. The use of approved procedures, valve lists, and power supply lists minimize any chance of ope ra t iona l e r ro r. 9
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b>s (v; DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEH/ COMPONENT _ Chapler 1 - Reactor Control & Protection Safety Unit 1 Unit 2 Relatgd Comments Rod Position Indication , Rod Position Indication Yes Unit 1 utilizes an analog position Unit 2 utilitizes a digital rod The rod position instrumentation pro-indication system - an analog sig- position indication (DRPI) sys- vided reflects new (system arrangement / ual is produced for each rod con- tem - a digital signal is pro- components) installed in Unit 2. This trol cluster assembly (RCCA) by a duced for each rod cluster as- Instrumentation will be addressed l inea r va riable transformer, sembly (HCCA) by rod position by approved procedures. This will Direct continuous readout or each detector assemblins mounted minimize any chance or operational RCCA position is presented to the around and c'ncentric with each e r ro r. N, operator by individual meter indi- rod travel housing. After q. cation on the vertical boa rd - being processed by the data cabi- The instrumentation provided will sectior B. A rod bottom ( rod nets, the position information further enhance the operator's d rop ) a l a rm is actuated by this is provided to the control boa rd ability to (control / monitor) system. The analog signal is also display in the control room. the system. Approved procedures provided to the rod insertion tiere the position information will minimiz any chance or oper-limit monitor (computer). receives further processing and ational error. is then (1) visually displayed as a graphic Indication or each rod position by means or vertical rows of 39 position LED's and (2) held in memory for access by the plant computer for further pro-cessing. In the control boa rd display, the position information is also analyzed for potential problems, such as equipment mal-runctions, for which appropriate visual and audible alarms are generated to alert the plant ope ra to rs. Pressurizer low pressure PC-4560, Pressurl2er low pressuro The a la rm setpoint is different for 4570, 455E, 1845 psig PD-4550, 4560, 457D, 1849 psig both units. Alarm response will be conducted in accordance with approved procedures Low steamline pressure $10 psig Low steamline pressure 485 psig The ala rm setpoint is different for both units. Alarm response will be conducted in accordance with approved procedures. e e 2 se '
f %g M gbp ' C DUQUESNE LIGHT COMPANt b BEAVER VALLEY PLANT UNITS 1 AND 2 DirrERENCE ANALYSIS SYSTEM / COMPONENT CheRitr 1 - Reactor Control & ProtocklAD Safety Unit 1 Unit 2 Related Comments Automatic reset or manual block Automatic reset or manual block The ala rm setpoint is dirrerent for on low steamline pressure 543*r on low steamline pressure 540*r both units. Ala rm response will be conducted in accordance with approved procedures Low-low steam generator water L.ow-l ow s team gene ra to r wa te r The a la rm setpoint is dirrerent for level 10% or span level 15% or span both units. Alarm response will be , conducted in accordance with ; approved procedures. Steam flow /reedflow mismatch Steam flow /reedflow mismatch The a la rm setpoint is dirrerent for 1.549 million pph' 1.161 million pph both units. Alare response will be P-8 31% or full power P-8 30% or full power conducted in accordance with
- approved procedures.
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6A c v > DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DirFERENCE ANALYSIS SYSTEM / COMPONENT Chaoter 6 - Reactor V11331 Safety Unit 1 Unit 2 Related Cgemmats The reactor coolant gas vent The reactor vessel head vent Yes The Unit 1 vent syst(m has an additional system takes suction f rom system takes suction from the vont source and an additional sink. two points: reactor vessel and discha rges Al ternate flowpaths a re provided.
. to the pressurizer reller However, they serve the same function as a, the reactor vessel tank only. In Unit 2 and will be operated in accor-b, the pressurizer dance with approved procedures. This will minimize any chance or operational it discharges to two points: e r ro r,
- a. pressurlier relier tanks (PRT) b, containment The reactor coolant gas vent The reactor vessel head vent Yes The head vent system are dirrorent, system flow is regulated by system is regulated parallel However, they serve the function orifices, hand control valves and will be operated in will be operated in accordance with approved procedures.
2RCS*HCV250A This will minimize any chance or oper-2RCS*HCV2508 ationa l error. Furthermore, BVPS #2 E0P-FR-8.3 will have the Unit 2 hand control valves positioned to FULL OPEN only and thus limit flow restriction to one fixed valve as an ort rico would. The dirrerence woud then be more mechanical than operational. . The reactor coolant gas vent Not installed in Unit 2.
- Low operationa l impact. This trans-system has a pressure trans- mitter is not necessary for normal mitter to indicate leakage opera tion of the system.
past isolation valves via an + indicator and an annunciator in the Control Room.
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en- A f 'At tf) DUQUESNE t.lCHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _fdigoter 6 - Reactor Coolant Pa-a ( RCP) Safety Unit 1 Unit 2 Related Comments Not installed in Unit 1 Motor overload and locked No Minimal operationa l impact. This is an rotor protection, dependent on automatic trip. The operator's response reactor coolant system (RCS) response to a RCP trip would be the same temperature will trip RCP. In e i the r uni t no matte r wha t initiated the trip. Not installed in Unit 1 RCP will not run when amotor No Minima l operationa l impact. There is differential is present. an additional electrical Interlock in Unit 2. The operator's response to the RCP not starting or tripping would be the same in either unit no matter what is the specific cause of the problem. Reactor Coolant Pump auto-stop Annunciator actuates anytime No The annunicators have different actu-reactor trip annunciator actu- the RCP auto stops with the ating permissives, however the re-ates only on failure of RCP to oil lift pump running, sponse to the annunciator would be the start in 150 seconds same in either Unit. Seal injection header is remotely Seal injection header is man- No This valve is not operated during isolated from the control room ually isolated locally by a no rma l ope ra t ion. The va lves a re via MOV-CH-370, block valve, different, however, they serve the same function and will be operated in accordance with approved pro- , cedures. This will minimize any chance of operational e r ro r. Component cooling therma l ba rrier Component cooling therma l Yes The addition of high pressure inter-trip va lves TV-CC-107A(B)(C) barrier trip valves lock on the valves in Unit 2 redundant isolate on high flow only. . 2CCP*A0V107A( B)( C) Isolate to the high flow when a RCS leak into a on high pressure or high flow the component cooling water occurs. } No operational impact. I t ! One annunciator for a reac tor Two annunciator for reactor Yes Reactor trip annunciators in Unit 2 trip initiated due to low flow trips initiated due to a low are more descriptive than in Unit 1. in RCP loops, flow (1/3) above P-8 and one However, the operator's response to the due to (2/3) above P-7. a l a rm i s the sa me a t e i the r un i t rega rd-less of the initiating condition. Alarm response will be conducted in [ accordance with approved procedures 5 O
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DUQUES;. 1.lGili COMPANY DEAVER VALLEY PL ANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEH/ COMPONENT Chantgr 6 - Pralsurizer Safety Unit 1 U q11_2 Rejited CommeDLs P- 1'1 (2000 psig RCS) is indicated P-11 (2000 psig RCS) is in- Yes The P-11 Indications are dif ferent, in the control room by a status dicated by an annunciator, however, they se rve the same func-light for each of the t ra n sm i t te r tion and will be displayed and PT-RC-45$(456)(457) and an verified in accordance with approved annunciator. procedures. This will minimize any chance of operational error. Pressurizer backup heaters do not Pressurizar backup heaters Yes This is an automatic actuation. The trip on a safety injection signal. de-eaergizo due to a safety only operator action required is veri- ') injection signal rication or backup heater de-energizing in Unit 2 which will be done by an I approved procedure. Backup heators A and B are on the T he re a re no stub bussus in Yes in Uni t 2, four backup heaters will stub busses. Unit 2. be available at times only two backup heaters would be available in Unit 1. Minima l operational impact. The status or blocked safety in- The status showing the Yes The blocking status indications and jections initiated by 1) low blocked safety injections is location of the Si blocking are dir-pressurizer pressure or 2) low indicated by separato annun- forent, however, they serve the same steamline pressure is indicated clators in the control room. function and will be operated in by sepa rato status lights for the The Si signals can be blocked accordance with approved procedure, respectivo condition. These Si in the control room a nd a t the This will minimize any chance or signals can only be blocked in eme rgency shutdown panel . ope ra t i ona l error, the control room, e lhe pressurizer control level ' the pressurizor cont rol level No The operator response to the pres-high ala rm sotpoint is 60%. high a la rm setpoint is 70%. surizer control level high alarm i s the sa me a t e i the r un i t rega r l e s s or initiating conditions. Alarm response will be conducted in accor-dance with apprcved procedures. T he b l oc k va l vo s fo r t he powe r- The block valves for the Yes By approved procedures, the block ope ra ted relier valves do not powe r-ope ra ted relief valves valves are ensured to be open when open or c losed automat ica l ly. will open at greater than 2000 the PORV's a re needed in both Units. psig and close less than 2000 In Unit 2 the block valves can auto- ' psig ir control switch is in mat ica l ly open minor operationa l AUIO. impact. 6
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( j, DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chagier 7 - Chemical Volume & Control System (CVCS) Safety Unit 1 Unit 2 Related Comments Boric acid pumps are two speed Boric acid pumps are single No The capacity of the Boric acid pumps pumps capable or operating at speed pumps with a capacity is dirrorent, however, they serve the 37.5 gpa (slow speed) or 75 gpa or F; gpm. One pump is nor- same function and will be operated by (high speed). Ono pump ,l s nor- mally aligned for operation approved procedures, ca l ly running a t slow speed to but does not sta rt unless re-recirculate boric acid while the quired. Recirculation to second pump serves as a standby. milntain thermal equilibrium must be manually initiated. i No similar valves provided. Letdown divert valves No 2CHSMOV ,0 A and B a re installed l 2CalS#MOV100A, Bl are provided to p rov '. e additional ope ra t iona l flex-to divert letdown flow directly* ibility. They will have minor opor-to the Unit 1 Boron Recovery ational Impact. System bypassing the Unit 2 BRS degastrication equipment. , The alternate emergency boration The a l ternate emergency bor- No These va lves se rve the same function, pa t h ha s a ma nua l isolation valve ation path has an automatic however, they a re operated from dir-i s ope ra ted locally. Isolation valve which is con- Terent locations according to approved trolled f rom the control room, p rocedu re s. A boronmeter is provided. Unit 2 does not have a boron- No Unit 1 does not currently utilize its meter. Reactor coolant boron bo ronme te r. This has not arrected
- concentration is measured by Unit 1 operation and will have no the Post Accident Sampling errect on Unit 2 operation.
System ( PAS). , , Not provided. A boron dilution limiting Yes The dilution orifice is a required orifice l2CilS-R0240l Is modification to ensure compliance , provided. with maximum dilution flowrate per technical specifications. This is a passive device requiring no operator action, t e 9 11 1 E
,1 h [d'. jd DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _ Chapter 7 - Chemical Vglume & Control Sv11em (CVCS)
Safety Unit 1 Unit 2 Related Comments Not provided. Alternate minimum flow recir- Yes The valves listed will autmatically
,culation lines are provided open closed on a SIS signal. This for the charging pumps in ad- is an automatic actuation. The only di tion to the norma l recirc- operator action required is ulation lines. The following verification.
Isolating and relief valves are provided: l2CHS*MOV380A, 3808) l2CHS*MOV383A, 3838 l2CHS*RV450A, 450B]l2CHS)V812, s 813, 814, 815, 816, 8,17, 818] / These valves open upon re-colpt of SIS at the same time the 2-CHS-MOV275A, 275B and 275C valves close to isolate the normal rec i rcula t ion , flowpath Not provided. The cha rging pump minimum re- Yes 2CHS-Ft170, flow indicator gives the circulation flow is indicated operator a means of verifying recirc-in the control room by usation flow. Minor operationa l l2CHS-Fl170). impact. Unit I letdown radiation monitors Unit 2 letdown radiation monl- No These valves are not utilized during
- have no manual isolation valves itors have manual bypass and normal operation and will only be to isolate the radiation monitors isolation valves to allow the used during maintenance. Therefore for maintenance radiation monitors to be iso- the re i s no ope ra t iona l impact, lated for maintenance. An'addl-tional discharge trip valve has been added also to make it pos-sible to completely isolate Unit 2 letdown radiation monitors f rom the control room.
Not provided. Weight loaded check valve Yes The relief valves are passive devices l2CHS*474, 475, 476l and safety installed to protect the piping, va lves [ 2CHS*RV260A, 2608, 260C] provided to protect against ther-mally induced overpressurization ' in containment penetrations. 12
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DUQUESNE LIGHT C0;4PANY , BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _ Chapter 7 - Chemical Volume & Control System (CVCSI Safety Unit 1 Unit 2 Related__ CometaL3 Not provided. ,
. Cha rg i ng pump suc t ion va l ve s Yes The use or 2CHS-MOV-8130A, 81308, provided for flow path isola- 8131A, 81318, 8132A, 81328, 8133A, tion; l 2CllS*MOV8130A, 81308 81338, valves will be addressed 8131A. 8131B]. These valves in the Unit 2 Emergency Procedures, will be used during long-term Minor operational impact.
rec i rcu la t ion. ' Di scha rge valves provided similarly (2CHS*MOV8132A, 81328, 8133A 8133B]
/
Unit I excess letdown heat ex- Unit 2 excess letdown heat ex- No Both excess letdown heat exchangers changers has analog computer high changer has a high temperature have high temperature a la rms. They tempe ra ture a la nn. annunciator at the control serve the same function. room vertica l boa rd. Unit 1 control room vertica l Unit 2 has less annunciator No Both alarm systems provide the same board has a significantly larger windows assigned; seve ra l information, they se rve the same number or annunciator windows a la rms loputs a re grouped function and will be responded by assigned to the CHS system than under a single window. The , approved procedures. Unit 2. Operator must check the com-puter printout to find the specific cause of the annunciator. 1CHS-MOV275A, B and C do not 2CHS-MOV275A, B and C receive Yes Motor-operated va lves 2CHS-MOV275A, receive a close signal on a SIS. a close signal on a SIS. , B and C operate automatically. The only operator action required is vert rication which will be done by i an approved procedure. Unit 1 charging pump cannot be Unit 2 charging pumps can be Yes if both pumps are racked onto the racked onto the same bus racked onto the same bus bus simultaneously, one pump will simultaneously, simultaneously, start or be running on SIS or diesel sequence loading signal. The charging pumps permissives are dirreront, however, the operator would respond to the cha rging pump starting or not sta rting in accordance of approved procedures. , 13
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. BEAVER VALLEY PLANT UNITS 1 A3.0 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT .. Chaoter 8 Boron Recoverv Systee Safety Unit 1 Unit 2 Relate"/ C'meents LCV's-BR-101A. 101B throttle to 2BRS-LCV101A, 1018 on the trim No iBRS _CV101A and 1018 will automat-maintain level in the degasirier. coo'ler inlet receive a signal ical'y open. The only operator to open f rom the dagasirier action required is verification reci rculation pump sta rt. They which will be done by an approved throttle to maintain level p rocedu re, af ter opening.
The degasirier Ilquid is routed T he dega s t r ie r l iqu id f rom Un i t No The subsystems are dirrorent, how-to Unit I coolant recove ry tanks, 2 may be directed to either ever, they serve the same functions / then to Unit I evaporator sub- Unit l's coolant recovery tanks and wi l l be ope ra ted in accordance system. or to the steam generator blow- with approved procedures. This will down hold tank. (Only Ir Unit I minimize any chance or operational boron recovery evaporators a re error, inope ra b l e.
.-lhere is a prima ry grade water Unit 2 receives i t s p ri ma ry No The PG Water Subsystem is common to supply system in Un(8 1 g rade wa te r f rom e i the r Un i t 1 both plants. No operationa l error, prima ry grade supply header or Unit 2's domineralizar water.
PCV-BR-100A & 1008 will modulate 2BRS-PCV100A & 1003 will mod- No 2BRS-PCV100A & 1b0B Elit automat-to maintain the degasirier reed usate to maintain the dogasi- ically maintain degasirier reed at 30 psig. This compensates for fler reed at 25 psig. pressure. . T he on ly ope ra to r a variable reed f l ow ra ta , action requi red is verification ' which will be done by an approved p rocedure. TCV's-BR-103 & 1038 receive in- 2 ASS-TCV103A & 1038 receive No The cont rol inputs to / ASS-TCV103A, puts from IRB-DR-103A & 103H and inputs from 2BRS-FT-103A & and B are dirrerent, however, 2 ASS-modulate to maintain degasifier 1038 On a high feed flow TCV103A and B serve the same function reed at 2145*F. 2 ASS-TC/'s 103A and B will as TCV-BR-103A and B. The only oper-open to sufficiently heat the ator action required is verification la rge amount or cold feed. which will be done by an approved p rocedu re. TCV-CC112A & 1128 the CCR tria 2CCP-TCV112A & 112B modulate No 2CCP-TCV-112A and B will automatically cooler IVC's, modulate to main- to maintain the trim cooler maintain outlet temperature. The only tain the trim cooler outlet outlet at 120*F tempera ture, operator action required is veriri- ' I tempe ra ture a t 90* F. cation which will be done by an
- approved procedure.
16
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k' f lA" ' 4. N ' N ) DUQUESNE L1GHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM /CDMPONENT _Ghanter 8 - Boron Recove rv system Safety Unit 1 Unit 2 Related Comments Not installed in Unit 1. The re is a piping connection No This system interrelationship is new, from the Unit 2 fuel pool to however, it will be utilized in ac-the inlet of Unit 1 Coolant cordance with approved procedures to Recovery tanks. minimize any chance or operational e rro r. Not installed in Unit 1. There is a piping connection No 1his system interrelationship is new, from the Unit 2 Alternate however, it will be utilized in ac-Letdown Path to the inlet or cordance with approved procedures to the Unit 1 Coolant Recove ry minimize any chance or operational tanks. error. O
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. BEAVER VALLEY PLANT UNITS 1 AND 2 O
DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chaoter 10 - Residual Heat Removal IRHS1 Safety Unit 2 Related Comments Unit 1 Unit 1 is a single piping system Uni t 2 ha s two pa ra l l e l loops Yes The systems are different, however, with two pumps and two heat ex- which are a supply f rom a common they serve the some function and changers. The pumps take suction header f rom Loop A (RCS). Each wi l l be ope ra ted in accordance with from Loop A (RCS) and returns loop has one pump and one heat approved procedure. This will back through Loops B and C. exchanger. One loop returns back minimize any chance of operationa t to Loop B; the other to Loop C. e r ro r. Miniflow is constant due to the The miniflow can be th rot t led Yes The th rot t le va lve s a re new, how-physical piping a rrangement. for each RHS tra in, ever, they will be operated in 2RHS*101 for 2RHS*P21 A in accordance with approved proce-2HHS*102 for 2RHS*P218 d u re s . This will minimize any chance of operational error. The Residual Heat Removal isola- Residual Heat Removal isolation Yes The inlet / outlet isolation valves tion valves which ara remotely valves Train A: a re di f ferent, however, they serve opor&ted: 2RHS*MOV701A the same function and will be op-MOV RH-700 28HS*MOV702A ersted in accordance with approved MOV-RH-701 2RHS*HOV720A (Loop B RCS) procedures. This will alnimize MOV-RH-720A (Loop B RCS) Train B: any chance of operational error. MOV-RH-7208 (Loop C RCS) 2RHS*MOV7018 2RHS*MOV702B 2RHS*MOV7208 (Loop C RCS) Above MOV's a re powered of f ' of MCC*2E05 or E06. 2RHS*MOV701B and 702A can be powered from either one. An annunciator occurs when' the power is transfarred to the a 1 to r*ia te powe r. 6 9 s 20
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U U;t DUQUESNE LICHT COMPANY (x)). ' BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 11 - Stigty.lDligtlon Slanal Safety Unit 1 Unit 2 Related Comments lhe Si signas due to low przr. The Si signal due to l ow p rz r. Yes The operator response to the low pressure occurs at 1845 psig, pressure occurs at 1849 psig. pressurizer pressure Si actuation - is the same at either Unit rega rd-less of the initiating condition. Alarm response will La conducted in accordance with approved p rocedu re s.
~1 There are status indicating There are annunciators for Yes The methods of indicating Si signal lights for "STM LINE ISOL Si BLK" " STEAM LINE ISOLATION SAFETY blocked, however, they serve the and "PRZR St DLOCKED". INJECTION BLOCKED" and "PRZR same function and will be used in SAFETY INJECTION BLOCKED". accordance with approved procedures.
This will minimize any chance of operational error. There are status lights for There are annunciators for Yes The methods of Indicating Si signal
" AUTO SAF INJ BLOCKED #
and " AUTO EAFETY INJECTION BLOCKED" blocked or actuated are different, "S. INJ. ACT. SIG.". and " SAFETY INJECTION SIGNAL" however, they serve the same function and will be used in accordance with approved proceduures. This will min-inize any chance of operational error. The Si signal due to low steam- The Si signal due to low Yes The operator response to the low , line pressu,re occurs at $10 psig, steamline pressure occurs steamline pressure Si actuation is at 48$ psig. the same at either Unit rega rd-
. e less of the initiating condition.
Alarm responses will be conducted in accordance with' approved p rocedu re s. 9 e t 23 '
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- DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 11 - Comagnents Actuated on Sig Safety Unit i Unit 2 Related Comments l HHSt minimum flow recirc. valves llHS I pumps' minimum flow Yes Closing of the HHS1 alniflow valves
! do not close on an Si signal, but recirc. valves close on an Si on $1 is an automatic actuation. are closed manually prior to RCS signal,l2CHS*MOV275A, B, Cl The only operator action required pressure of 1350 psig during an and [2CHS*MOV373]. Is verification which will be 3 accident. [MOV-CH-373, 375A, B, done by an approved procedure, t Cl. I i No groups of pressurizer heaters Pressurizer heaters trip Yes De-energlJation of the pressurizer i 4 trip of an Si signal. (Groups A, B, D, E). heaters on Si is an automatic actu- ./ j ations. The only operator action s required is verification which will be done by an approved procedure. CRDM shroud cooling fans do not CRDM shroud cooling fans, Yes Stopping of the CRDM shroud cooling stop on an $1 signal. (2HVR-FN202A1, A2, 81, 82, C1, fans on Si is an automatic actuation. I C2 ] , stop on an Si signal. The only operator action required is verification which will be done by an approved procedure. River water pumps' seal water is Service water pumps' seal Yes SW (RW) system arrangements are dif-not automatically isolated, water isolation valves fo re n t , however, they serve the same l2SWS*AOV118A, B, C] close, function and will be used in accordance wi th approved procedures. This will , minimize any chance of operational
- error. I s o l e t ion o f the SW pump s'
, , seal water un 58 is an automatic actuation. The only operator action is verification which will be done by an approved procedure.
The sea t water strainer is on the Se rvice water pumps' seal Yes SW (RW) system arrangements are dif-no rma l seal water supply flowpath wa te r s t ra i ne rs, ferent, however, they serve the same and is normally running. It does [2SWS*STRM 47, 48l, receive function and will be used in accordance an Si start signal to start. an Si start signal, with approved procedures. This will minimize any chance of operational error. Sta rting of the SW pumps' seal water strainers on Si is an automatic actuation. The only ope r- , ator action requi red is verification , which will be done by an approved p rocedu re. , 24
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(- ~ 'N] sq'.) j DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT ,_Ghanter 11 - Components Actugled on S[1 Safety Unit 1 Unit 2 Relgigd Comments There are no autoestic actions Service water chlorine solution Yes Closing of the SW chlorine solution i in the chlorine supply system, valves close [2SWS*MOV562, 563, valves is an automatic actuation. 564, 565). The only operator action required la verification which will be done by an approved procedure.
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DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 OlFFERENCE ANALYSIS l SYSTEM / COMPONENT Chapter 11 - High Head Safety injection _ Subsystem fHHSin Safety Unit 1 Unit 2 Related Comments Abno rma l condition in the HHSI A common status light for each Yes The operator response to the HHS1 subsystem activate individual HHSt t ra i n, Indicating system subsystem alarms is the same at annunciators and/or input to the bypa ssed/ i nope rab l e, is acti- either Unit regardless of the computer or SER to alert ethe va ted by a numbe r of d i f fe rent initiating conditions. Alarm operator of the condition. a bno rma l conditions in the-HHS1 response will be conducted in subsystem. Each individual con- ' procedures. dition is a computer input.
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The HHSI pumps' discha rge valves The HHS1 pumps' suction and dis- Yes The HHS1 subsystem va lve a rrangements, used to establish path redundancy charge valves used to establish a re di f ference, however, they serve af ter auto transfer to rece rc. injection path redundancy af ter the same function and will be used in phase are manual and must be auto transfer to recirc phase accordance with approved procedures. aligned locally. [CH-26, 27, 158, occurs are motor operated and This will minimize any chance of 161). can be aligned from the control operational error. room. [2CHS*MOV8130A(B), 8131 A(B), 8132A(B), 8133A(B)). A Baron injection System (2000 - A Boron Injection tank and Yes The HHSI/ Boron injection subsystem 7700 PPM) is installed to inject associated surge tank are a re d i f fe rent, however, they se rve concentrated boron into the RCS. Installed, but 'a re not con- the same function and will be oper-nected to any HHSI Injection ated in accordance with approved line (unless required for procedures. This will minimize licensing), any chance of operational error. , Inere are 6 separate high head There a re 12 sepa rate high Yes The LHSI/HHS1 subsystem flowpaths i nj ec t i on lines immediately in- head injection lines immediL are different, however, they serve side cnet., each having a control ately inside comt., each having the same function and will be used room flow indicator. These lines a local flow indicator. These in accordance with approved pro-ti.cn converge (with the low head lines then converge (with the cedures. This will minimize any ; i nj ec t ion lines) into a line for low head injection lines) into chance or operational error, each hot and cold leg. a line for each hot and cold leg. The high head injection *1ines are Ths te a re two additiona l Yes The HHS1 subsystem injection line not used for boric acid addition boric acid addition lines arrangements are different, however, (except during a safety injec- (using a portion of high head they serve the same function and tion). There are no hand control injection lines), each with will be used in accordance with valves intailed on these lines, a hand control valve for approved procedures. This will throttling riow. minimize any chance of operational error. 26 9
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Y s u DUQUES"E LIGHT COMPANY O BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 11 - High Head Sarety injection
.jubjy11em iHHSI1 Sarety Unit 1 Unit 2 Related Comments BIT inlet valvo lMOV-S1867Al Is . T he re is motor-operated iso- Yes The HHSI subsystem valves /flowpaths the only remote-operated valve lation valves l2 SIS *MOV841) are dirrerent, however, they serve on its injection line, in series with 12 SIS *Mov867Al the same runctiou and will be used on one or the high head injec- in accordance with approved proce-tion lines to the cold legs, dures. This will minimize any chance or operational error.
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DUQUESNE LIGHT COMPANY t v BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEH/ COMPONENT Chapter 11 - Low Head Safety injection Subsystem fLHSil Sa fe ty Unit 1 Unit 2 Related Comments The LHS1 pumps draw suction f rom The LHSI draw suction from the Yes The LSHl/RSS subsystem function the RWST or the containment sump RWST only. Two RSS pumps are and flowpaths are different, how-cnd are used to supply the HHSI used to supply the HHS1 pumps ever, they will be used in accor-pumps during the reci rculation during the reci rculation phases, dance with approved procedures. phases. This will minimize any chance of ope ra t iona l e r ro r. Each LHSI pump mini-flow test Each LSHI pump mini-flow test Yes The LHSI pump rec i rc. va l ve s log i c s - line uses two MOV's in series for line uses HOV for isolation, a re d i ferent, however, the valves isolation. These va lves a re not Each of these valves is i n te r- serve the same function and will interlocked with LHSI pump dis- locked with LHS1 pump discharge be operated in accordance with cha rge riow, and a re norma lly flow, and is normally closed. approved procedures. This will min-open. Imize any chance of operational e r ro r. The isolation valve on each line The isolation valve on each Yes The LHSl/RSS functions and valves f rom an ORS pump to the associ- line from a RSS pump to the a re d i f fe rent, however, they will be sted LHSI pump discharge is a associatcd LHS1 pump discha rge ope ra ted in accordance with approved manual vaJve. There is no ori- i s e. MOV, which opens auto- procedureb. This will minimize rice on either line. The line matically upon low-low RWST any chance of operational e r ro r. is used only in the event of level with an $1 signal. There LHSI pump failure, is a restriction orifice on each line. , The re a re no ma nua l valves on the Each LHSI pump discha rge line Yes The LHSI subsystem va lve a rrange-tHSt pump discharge lines before has a manual valve before the ments a re di f fe rence, however, the path splits to the HHSt pumps path splits to the HHSI pumps they se rve the same function and and HCS hot and cold legs. There and RCS hot and cold legs, will be operated in accordance are no individual manual isola- Each LHSI pump suction line with aproved procedures. This tion valves on the LHSI pump, hcs a manual isolation valve. will mimize any chance of operatical error. {MOV-SI-890C] has a "not fully [2 SIS *8888A, B] do not have Yes The methods of indicating misaligned open' annuncia tor associated wi th not fully open" annunciators LHS1 pump valves are dif ferent, howeve r, it (with reflash). It is the associated with them. There they serve the same function and will only MOV on the common LHS1 pumps' are two LHS1 pump discharge be responded to in accordance with discharge line to the RCS cold lines to the RCS cold legs, approved procedures. This will ' legs, each with one of these valves. mimize any chance of operational e r ro r. 28 b 5 _ _ _ .
I'[\- f r v o DUQUESNE LICHT COMPANY b BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 11 - Low Head Sarety inJ*ction
. Subsystem fLHSil Sarety Unit 1 Unit 2 Related Comments Abno rma l conditions in the LHSl A common status light for each Yes The operator response to the LHS1 subsystem activate individual LHSI train, indicating system subsystem alarms is the same at annunciators and/or input to the bypsssed/ inoperable, is activ- either Unit regardless of the ini-computer or Sequence of. Events ated by a number or dirreront tlating condition. Alarm response Rscorder ( SER) to alert the ope r- abnormal conditions in the LHSI will be conducted in accordance ator of the condition, subsystem. Each Individual con- with approved procedures, dition is a computer loput, i
The rollowing valves can be power The following valves can be Yes The LHS1 and HHSI valves and flow-locked out using Jacks on VB-A: power locked out using Jacks paths a re di rrerent, however, they using Jacks on v8-A: serve the same runction and will be used in accordance with approved
-HHSI pumps to hot !egs -HHSI pumps to hot legs p rocedu re s. This will minimize any
{MOV-SI-869A, Bl [2 SIS *MOV-869A, Bl chance or operational error.
-{HHSI pump discha rge va lves are -HHS1 pumps' discharge manual) isolation valves 2CHS*MOV-8132A, B 2CHS*MOV-8133A, B
-LHSt pumps to cold legs -HHSI pumps to cold legs
[MOV-St-890C] [2 SIS *MOV-836]
-LHSI pumps to hot legs -HHSI pumps to cold legs ,
[MOV-SI-890A, B) [ 2S I S*MOV-8841 ] I
-Accumulator discharge valves -Accumula tor discha rge va lves
[MOV-SI-86$A, B, C] [2 SIS *MOV-865A, B, Cl
-LHS1 pumps to hot legs l2 SIS *MOV-8889) <
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k AI (U[g b ) DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 11 - Accumulator Subsystem Safety Unit 1 Unit 2 Releggd Comments N2 supply to each individual ac- N2 supply to each individual Yes The N2 supply system valves are cumulator is isolated by one MOV, accumulator is isolated by two d i f fe ren t, however, they serve no rma l ly c l osed. pa ra l l e l SOV's, normally the same function and will be closed. operated in accordance with approved procedures. This will minimize any chance of ope ra t iona l e rro r. The accumulators are vented using The accumulator can be vented Yes The N2 venting flowpaths/ valves [HCV-SI-936] to atmosphere, using either [2 SIS-HCV-936] or are diferent, however, they serve {2 SIS *SOV-854A, B). the same function and will be *
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used in accordance with approved p rocedu re s. This will minimize any chance of operational error. Abno rma l conditions in the ac- A common status light, Indica- Yes The operator response to the ac-lator subsystem activate inds- ting accumulator bypassed / cumulator subsytes alarms is the vidual annunciators and input to inope ra b le, is activated by a same at either Unit rega rdless of the SER to alert the operator of number of abnormal conditions the initiating condition. Ala rm the condition, in the accumulator subsystem, response will be conducted in accor-Each individual condition is dance with approved procedures, a computer input, t Individual annuncletors and the There is an accumulator monitor- Yes The operator response accumulator
- SER serve to indicate accumulator. ing program interfacing with the subsystem alarms is the same at with the computer, printer and either Unit regardless of the ini-BISI to indicate accumulatdr tlating condition. Ala rm response status, will be conducted in accordance with approved procedures.
f T he re a re sepa ra te hyd ro te s t The re is a common "t rouble" an- Yes The operator response to the hydro pump annunciators for conditions nunciator for abnormal hydro te s t pump a l a rms i s the sa me a t such as auto stop or low seal test pump conditions such as either Unit rega rdless of the water level, auto stop or low seal water initiating condition. Ala rm re-level, sponse will be conducted in accor-dance with approved procedures, a 5 30
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DUQUESNE LIGHT COMPANY ' BEAVER VALLEY PLANT UNITS 1 AND 2
- DIFFERENCE ANALYSIS SYSTEM / COMPONENT _ Chapter 11 - Accumulator and LHSI Subsystem Safety Unit 1 Unit 2 Related Comments J
{ Accumulator test line isolation Accumulator test line isolation Yes Closure of the accumulator test i va lve { MOV-SI-842] does not re- valve [2 SIS *MOV-842) receives a line isolation valves on CIA is ceive a CIA signal to close. , CIA signal to close. an automatic actuation. The only ]i operator action required is veri-
! recation which will be done by an approved procedure.
1 There is no time delay on the There is a time delay on the Yes The hydro test pump logics are ! manual stop of the hydro test manual stop of the hydro test dirrerent, however, the pump
- pump. pump. serves the same function and a will be operated in accordance l with approve procedures. This I will minimize any chance of 1 operationa l error.
Each LHSI pump to RCS cold legs Each LHSI pump to RCS cold Yes The LHS1 subsystem valves /flowpaths i riow path contains two MOV's, one legs flow path contains one are dirrorent, however, they serve of which is common. Each LHS1 MOV. Each LHSI pump to hot the same function and will be used l pump to RCS hot legs flow path legs flow path contains two in accordance with approved pro-contains one MOV. There are two MOV's, one of which is cedures. This will minimize any 3 i nj ect ion lines to the RCS hot common. There is only one chance of operational error. legs (all legs), injection line to the RCS hot i legs (B and C only). i lhe LHSI pumps' suction va lves The LHS1 pump's suction valves Yes Opening of the LHSI pump suction t ( 4 ) a re interlocked with the auto (2) are interlocked with the valves when the pump sta rt is an j transfer to cold rec i rcu la t ion auto tranfer to cold recircu- automatic actuation. The only , phase signal, lation phase signal to the as- operator action requi red is veri-i sociated pump's status ( running rication which will be done by an i or not running), approved procedures. 1 d I 4 31
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I ( >f x (hb) x_, I V DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 11 - Transfer Cold Reci rc. to Hot Reci rc. _fhile Safety Unit 1 Unit 2 Related Comments App rox. 14.5 hours a f ter a LOCA, Approx. 24 hours af ter a LOCA, Yes The LHS1 subsystem functions the operator manually initiates the operator manually initiates during hot recirc. phase. The transfer from cold recirc phase transfer from cold recirc. phase subsystem a re dif ferent, however, to hot / cold recirc. phase by per- by performing the following ac- will be operated in accordance forming the following actions: tions, assuming "A" and "B HHSI with approved procedures. This pumps, are operating: will minimize any chance of -(The LHS1 pumps' flowpath and operational error. The time , valves are not affected by this -Close LHSI discharge valves to period involved and the oper-t ransfe r; the pump continued to the cold legs (2 SIS *HOV8888A, B] ation of the HHS1 pumps are / inject into the cold legs and a lso dif ferent, however, this also supply the HHS1 pumps.) -Open the LHSi crossover valves will be addressed in approved [2 SIS *MOV864A, B] procedures also. -(The HHSI pumps are not stopped.)
-Open the LHSl valve to the
-Close [ MOV-Sl836 ] va lves [2 SIS *MOV8889) -Immediately open the corres- -Stop HHSI "A" pump and close ponding valve to the hot legs [2 SIS *MOV836) [ MOV-S1869A l
-Open corresponding valve to
-(The HHS1 pumps a re not stopped.) the hot legs [2 SIS *MOV869A] -Close [ MOV-S1867A, B] -Restart HHS1 "A" pump. -Immediately open the corres- -Stop HHSI "B" pump and close
- ponding valve to the hot legs [2 SIS *MOV867A, B or C, Dj lMOV-Sl86981
-Open corresponding valve go hot No alternation of phases is done, legs (2 SIS *MOV8698)
-Resta rt HHSI "B" pump Alternation of hot and cold recirc phases is continued for the duration of the accident.
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DUQUE$NE L1CHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 11 - Transfer to Cold Recirc. Phase - Auto Safety Unit 1 Unit 2 Related Comments The automatic transfer to cold The automatic transfer to cold Yes The actions that occur during trans-reci re. phase includes a number reci rc. phase includes a number for to cold recirc. phase are auto-of actions: of actions: matic. The only operator action required is verification which will
-( The re a re no LHS I pump c ro ss- -LHSt pump crossover valves be done by an approved procedure, o"e r va l ve s . ) [2 SIS *MOV864A, BI close. -Cnet. sump to LHS1 pumps' suc- -RSS pump disch. to LHS1 pump )
tion va lves [ MOV-Sl860A, B) disch. [2 SIS *MOV8811A, Bl open, open.
-(LHSI pumps do not stop. ) -LHSI pumps stop upon opening of [2 SIS *MOV8811A, Bl. -L ilSI suction valves f rom the RWST [ MOV-S1862A, Bl close 2 -LHS1 suction valves close when minutes after transfer signal, pumps stop [2 SIS *MOV8809A, B]. -(ORS pumps spray header isol. -RSS pumps C and D spray header valves do not get this signal.) isol. valves close
[2RSS*MOV1156C, Dj
-HHSI pump suction valves from 81 open. -HHSI pump suction valves from LSHI pump disch. header open -HHSt suction valves f rom RWST [2 SIS *MOV863A, B) upon opening
[MOV-CH1158, Dj close 30 seconds of [2 SIS *HOV8811A, B] and , af ter tranfer signal, closing of [2 SIS *MOV864A, B)
-LHSI pumps' miniflow recirc. -HHSI suction valves from SWST valve 5 [MOV-S1885A, B, C, D] l2CHSalCV1158, Dl close when close. [2 SIS *MOV863A, B] a re open.
-(LHSI pumps' miniflow recirc.
valves do not receive the transfer signal. ) t 9 e 33 e a
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~, \ h DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYST EM/COMPONEN T Chapter 11 - Transfer to Cold Recirc. Phase -
Manual Safety Unit 1 Unit 2 Related Comments Af ter the automatic portion of Af ter the automatic portion Yes The 16HSI subsystem valves and flow-the transfer to cold recirc. of the transfer to cold recirc. paths a re di f ferent, howeve r, they phase is complete, the operator phase is complete, the oper- serve the same function and will be manually separates HHS1 into re- ator manua lly sepa ra tes HHS1 ope ra ted in accordance with approved dundant t ra ins by performing the into redundant trains by per- procedures. This will minimize any following actions: forming the fo110 wing actions: chance of operational error. -Open alternate cold rec i re. -Open a l terna te cold reci rc. , , isol. valve lMOV-S1836) isol. valve [2 SIS *MOV836) -Close the manual valve on the -Close HHSI pumps' suction discharge header of the opera- header va lves [2CSH'HOV8130A, ting 1 A or IC flHSI pump. B) or ( 2CHS*MOV8131 A, Bl. -Close the manual valve on the -Close llHSI pumps' d i scha rge discha rge header of the opera- header va lves ( 2CHS*MOV8132A, ting 18 or 1C HHS1 pump. B] or [2CHS*MOV8133A, Bl There i s no such ar.nuncia tor. There is an annunciator for Yes Unit il provides additional inform-
" TRANSFER TO RECIRC. LOSS Of ation for the operator concerning POWER". availability of the AUTO TRANSFER TO RECIRC. PilASE. Minimal oper-ational impact.
There a re two pushbuttons per T he re is a selector switch for Yes The methods of manually actuating t ra i n fo r ma nua l actuation of each train that either actuates transfer to cold recirc. phase are transfer to cold recirc. phase, or resets the transfer to dold d i f fe rent, however, they serve and one pushbutton por train for recirc. phase. the same function and will be used reset. in accordance with approved p rocedu re s. This will minimize any chance of operational error. 9 e 34
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DUQUESNE L1GHT COMPANY (]h}) BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYST EM/COMPONEN T Chapter 12 - Radiation Monitorine Subsystems Safety Unit 1 Unit 2 Related Commenti The air activity monitor pump is The air activity monitor pump Yes The monitoring systems are dirrerent, located inside containment not is located outside containment however, they serve the same function with the air activity monitor, with the air activity monitor, and will be operated in accordance The monitor discharge line inside The monitor discha rge line in- wi th approved procedures. This will containment has a SOV and a manual side containment has a check minimize any chance or operational valve, valve and a riange. e rro r. The air activity monitor pump The a i r act ivi ty moni tor pump Yes The discha rge flowpaths a re dirrerent, , discharges through only one can discharge to containment however, they serve the same function ' flowpath - to containment. ( no rma l ly open) o r to the CW and will be operated in accordance system as a backup (normally with approved procedures. This will isolated), minimize any chance or operational error. 4 4 0 4 9 e e
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, BEAVER VALLEY PLANT UNITS 1 AND 2 1 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _Ghagter 12 - Pressure Monliorine Subsystagg Safety Unit 1 Un[1 2 Related Comments There is a sealed pressure There is no sealed pressure Yes The leakage monitoring systems are ( rorerenced method) . leakage monitoring system. Contain- dirrerent, however, they se rve the monitoring system. There a re ment leakage is determined same function and will be operated also absolute and make-up hy absolute and make-up air in accordance with approved procedures. methods for determining methods. A computer applic- This will minimize any chance or containment leakage. Mano- ation program is used, ope ra t iona l e rro r, meters are used to input the analog computer. . . Conta inment a i r pa rtia l Conta inment a ir partial Yes The instrumentation provided reflects p ressure is inferred in pressure is determined by a dirrerent computer programming 8 c i rcui t ry f rom a i r coole r computer program using temper- p rovided in Unit 2. The computer di scha rge temperature and s tu re, pressure and humidity will be addressed by approved containment total pressure. Inputs. One digital indicator procedures which will minimize Two digital indicators in in the CR. any chance of operational error. the CR. l l l - t i i I l l t e 37 4P
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DUQUESN LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DirFERENCE ANALYSIS SYSTEM / COMPONENT . Chagter 12 - CollLEIMEDLYAfl8E_hlBill Eldl12M9_mi Safety Unit 1 Unit 2 Related Comments Vacuum pump design data: Vacuum pump design data: No The vacuum pumps are dirrorent, however, they serve the same function Capacity = 5 cra Capacity = 45 cra and wi l l be ope ra ted in accordance Power supply = 120 v, lo Power supply = 460v, 30 with approved procedures. This will Horsepower = .5 Hp Horsepower = 3Hp minimize any chance or operational e rro r. The vacuum pumps have no seal The vacuum pumps have a seal No The vacuum pumps are dirrorent, y wa ter system. Each pump has water system. Each pump has however, they serve the same function a filter / separator on its a separator / silencer on its and will be operated in accordance suction and discharge line; discharge line with a vent with approved procedures. This will the filters have no vent or and drain system, minimize any chance or operational d ra in system, error. Each vacuum pump will auto The vacuum pump suction line Yes Th.s is an automatic actuation. The stop upon receipt of a CI A SOVs will shut on a CIA only operator action required is signal. Its suction signal. A pressure switch on verification which will be done by
, isolation valves will shut each pump suction line will an approved procedure.
I on a CIA signal. There a re shutdown the associated. pump no pressure switches on low pressure. associated with the pumps. The suction line isolation There is no interlock between Yes The vacuum pump associated valves are
- va lve ( SOV-CV-150Bl opens the vacuum pumps and their dirrerent, however, they serve the when [ CV-P-1 A ] is started and suction line isolation valves same. runction and will be operated closes when the pump stops. [2CVS*SOV151 A(B) and
- in accordance with approved procedures.
[ SOV-CV-150A l i s no rma l ly [2CVS'SOV152A(B)] This will minimize any chance of oper-open. The suction line ationa l error, isolation valve [TV-CV-150D] cpens when lCV-P-1B] is started and closes when the pump stops. [TV-CV-150Clis normally open. The wide-range containment H2 The suction lines to the Post Yes The suction taporrs, a re dirrerent analyzers' suction lines tap DBA itydrogen Control System however, they serve the same function into the vacuum pumps' suction a re combined into one line and will be operated in accordance lines inside containment, the which taps into each vacuum with approved procedures. This will suction lines for the Hydrogen pump suction line outside minimize any chance of operational Recombiners tap into the containment. The PASS System e r ro r. ' suction lines outside contain- suction line does not tap into ment and PASS System suction e i the r pLap suc t i on l ine. 11ne taps into the "A" vacuum
- pump suction line.
38 4
c f I d , DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT ^ Chagtgr 12 - Containment Vacuum Punos Subsystems Safety Unit 1 Unit 2 ReIgggd Coerpa Each vacuum pump has an auto T he re i s a common annunc i a to r, Yes - Tiie operator response to the a la rm stop annuncia tor. T he re a re " containment vacuum pump auto is the same at either unit regardless also separate auto stop SER .stop". There are separate of the initiating condition. Alare inputs, auto stop computer inputs. response will be conducted in accor- , dance with approved procedures. . i A e a k e E e E F
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DUQUE$4E LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _Shap_Lar 12 - Tomoerature and Molsture instrumentation Safety Enit 1 Unit 2 Related Comments There a re two analog temper- There are six analog temperature Yes instrumentation provided reflects eture indicators in the indicators in the control room new computer programming available, cont ro l room (not average (not average temperature). T he re Instrumentation provided will fu rthe r tempe ra tu re ) . Conta i nment a i r is a computer program for deter- enhance the operator's ability to average temperature is cal- mining containment air average the system. The computer will be culated by the operator on ' temperature which displays on addressed by approved procedures. log L5-11.55 using rive a digital indicator in the CR. This will minimize.any chance or op-computer temperature points. e ra t iona l e r ro r. There is no annunciator for There !s an annunciator for Ye9 Alarm response will be conducted in containment temperature or "conta inment a i r average temper- accordance with approved procedures. containment average temperature atur high/ low" which receives its input f rom the computer. There is one moisture indicator There are rive poisture Yes instrumentation provided will further (dewpoint tempe ra tu re ) in the indicators (dewpoint t empe r- enchance the operator's ability to cont rol room, ature) in the control room. monitor the system. Approved proco-dures will minimize any chance or operationa l error. O e 4 l i 40 4 r- - , _ _ I
(h E;b DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Deter 12 - Temontature and Molsture Instrumentation Safety Unit 1 Unit 2 Related Comments The temperature and moisture Yes Instrumentation provided reflects new elements inside containment are system a rrangement installed in Unit 2. located at different places in This instrumentation will be addressed Unit il versus Unit 1. by approved procedures. This will minimize any chance of operational e rro r. ( O e T e 9 e 41
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U DUQUESNE LIGHT COMPANY CT BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMP ^NfMT Chapter 13 - RWST and Related Components Safety Unit 1 Unit 2 Related Comments The Refueling Water Storage Tank The RWST has a capacity of Yes The RWST capacities are different, (RWST) has capacity of 452,000 900,000 gal. however, the RWST se rves the same gal, function in both Units and will be used in accordance with approved approved procedures. This will minimize any chance of operational e r ro r. ,,
! ~~I T he re a re individual a la rms for T he re i s a common a la re "RWST Yes The operator response to the RWST abnormal level conditions in the level of f no rmal", activated abnormal level alarm is the same Rv5T. Some of these conditions by low-low, low, high or at either Unit regardless of the are SER inputs, high-high level conditions in initiating condition. Alarm
- I tne RWST. Each individual response will be conducted in ac-condition is an input to the cordance with approved procedures.
l computer and SER. Level monitoring arrangement: Level monitoring arrangement: Yes RWST level transmi tters provided l reflects new QS, SI system instru-2 LSs - input to ala rms 2 LTs - indication and alarms mentation installed in Unit 2. This 4 LTs - indications, a l a rms. (NR) instrumentation will be addressed by l valve actuations and 2 LTs - indications and ala rms by approved procedures. This will transfer to cold re- (WR) minimize any chance of operational ! ci rculation phase 4 LTs - provide transfer to cold e r ro r, signal. reci rculation phase , signal. RWST instrumentation provided will further enhance the operator's
. ability to control / monitor the systems (QS, SI). Approved pro-cedures will minimize any chance of operational e r ro r.
The RWST has a ha rd-piped connec- .The RWST has a ha rd-pipe con- Yes The QS and DA systems and the tion to the sweep gas system and nection to the vents and drains RWST a re dif ferent, however, a plastic overflow pipe to the system, they serve the same function QS pump room f l oo r d ra in. and wi l l be ope ra ted in accor-dance with approved procedures. This will minimize any chance of operational error. I D e ? 42 l I
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BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 13 - RWST and Related Components
- ' Sa fety Unit 1 Unit 2 Related Comments The refueling water recirculation The refueling water co ling Yes The RWST support components a re pumps have two speeds (1800/3600 pumps have one speed (3600 different, however, they serve the rpm, 183/375 gpe). Neither pump rpm. 375 gpa) and each has a same function and will be operated ha s a suc t i on l i ne st ra ine r, suction line strainer, in accordance with approved pro-
, cedures. This will minimize any chance of operational error. There are two refrigeration units There are no ref rigeration Yes The RWST cooling components are -; cooled by CCR to maintain RWST units associated with the RWST. d i f fe rent, however, they serve water temperature in the correct RWST wa te r i s ma i nta i ned in the the same function and will be range during normal ope ra t ion, co rrec t tempe ra tu re range using ope ra ted in accordance with ap-The RWST coolers are used for the RWST coolers. The coolers proved procedures. This will backup. cooling af ter refueling use the parallel flow concept. minimize any chance of oper-' ~ and cold weather protection ationa l error. (counte rf low) . i n. o rde r to rec i rcu la te RWST A ha rd-pired connection is pro- Yes The FPP system components /flowpaths water through the fuel pool puri- vided in the fuel pool purifica- a re d i f fe rent, however, they serve fication system for cleanup, a tion system for recirculation the same function and will be op-tempora ry hose connection must be clean up of the RWST water, e rs ted in accordance with approved made in the fuel Pool Purification p rocedure s. This will minimize any (FPP) system. chance of operational error. There a re four chemical injection T he re a re two chemica l injec- Yes The chemical injection pumps a re pumps. Design data: tion pumps. Design data: different, however, they serve
, the same function and will be Rated flow = 32 gpe. Rated flow = 55 to 60 gpe, ope ra ted in accordance with ap-Diff. Press. less than or equal Disc. Press. = 40 psig. proved procedures. This will to 45 psid. minimize any chance of operational e r ro r.
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U DUQUESNE LIGHT COMPANY U BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 13 - Chemica l Addition Subsysteg Safety Unit 1 Unit 2 Related Comments The chemical addition tank The chemical addition tank Yes The CAT capacities are different, capacity is 5,200 gal, capacity is 10,000 gal, however, the CAT serves the same functions in both Units and will be used in accordance with approved procedures. This will minimize any chance or operational error. CAT (chemical addition tank) CAT level and temperature non- Yes The operator response to the CAT } t .' Ievel and temperature monitoring itoring instrumentation arrange- alarm is the saase at either Unit instrumentation arrangemen$: ments: regardless of the initiating condition. Ala rm response will 2 l_Ts - indicate, input to sepa- 2 LTs - Indicate, input to a be conducted in accordance with rate low and extreme common " CAT / pump approved procedures, low level alarms, input trouble" alarm. to valves and pumps. 2TRBs - indicate and input to 4 TRBs - indicate and input to the common " trouble" two separate low temper- alare. ature alarms. The re is one manual valve in addition to three manual Yes The chemical addition subsystem flow-IQS-39(40)l LO (locked open) on va lves [2QSS*127(128), 150(151), paths are di f ferent, however, they each chemical injection pump 38(39)] Administrative Control- serve the same function and will be used in accordance with approved suction line. There'are no Open ( ADC-0), there is a MOV . c ross-connec t lines. [2Q3s*MOV102A, B) on each chen s procedures . This will minimize ical injection pump suction any chance of operational error. line. The re a re a l so two . cross-connect lines. One is isolable, one is not. - ,
- l There a re three manual isolation T he re a re two manua l isolation Yes The chemical addition subsystem valves on the chemical addition valves on the chemical addition- f lowpa ths a re d i f fe rent, however, pump suction line, two a re nor- pump suction line. [2QSS*42) they serve the same function and mally open, one is shut under is administratively controlled will be used in accordance with s administrative control. SHUT and (2QSS*44) is normally approved procedures. This will open, minimize any chance of operational error.
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V DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT A gler 13 - Chemical Addition Subsystem i Safety Unit 1 Unit 2 Related Comments . There a re two manual valves on There is one manual valve on Yes The chemical addition subsystem the chemical addition pump dis- the chemical addition pump components a re different, h ver, cha rge line, discharge line. they serve.the same function and will be used in accordance with, approved procedures. This will minimize any chance of operational e r ro r. I T he re is a common fl on the chem- T he re is a flS on each chem- Yes Chemical injection pump flow instru- > ical injection pumps' test line ical injection pump discharge mentation provided will further that indicates flow locally, line that indicates flow and enhance the operator's ability is Interlocked with each pump, to moni tor the system. App roved procedures will minimize any chance of operational error. Chemical injection pump sta rt/stop due to flow is an automatic actu-ation. The only operator action required is verification which will be done by an approved procedure. The chemical injection pumps' The chemical injection pumps' Yes The chemical injection pump logics logic includes interlocks with logic includes interlocks with a re d i f fe rent, howeve r, the chemical the CIB signal. the discha rge the CIB signal and flow from injection pumps serve the same func- ! H0V, the respective QS pump flow the other pump, tion and will be operated in accor-l and CAT level. dance with approved procedures. This will minimize any chance of oper-l
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Chemical injection pump start /stop is an automatic actuation. The # only operator action required is verification which will be done by an approved procedure. l l . t _n
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/ SYSTEM / COMPONENT Chapter 13 - Chemical Addition / Quench Sorav Subsysteg
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Safety Unit 1 ' Unit 2 -Reisted Comments Each set of chemical injection Each chemical injectiork pusAp Yes The chemical'InJoction subsystem pumps has only one accident flow has two accident flow paths: flowpaths a re di fferent, -however, path: to the associated QS pump to the associated QSS pump they serve the same function and t suction. suction or to the containment will be essed in accor:fonce with sus.p . approved procedures. This will minimize any chance of operation 2? error. 3 e Each chemical injection pump dis- The chemical injection pump Yes The chemical injection subsystem cha rge HOV is interlocked with th's discha rge SOVs have the foi- f lowpa ths a re d i f fe rent, howover,, ?- CtB signal and CAT tevel. There lowing interlucks: SOVs to QSS they serve the same function and e is he flow path to the contain- pumps - CIS, RWST level and QSS will be used in accordance with ! ment sump. pump f?ow. SOVs tu containment approved procedures. This will j~ *: sump - CIB and RWST level. minimize any chance of operational
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There a re two separate 360* QS There are two cross-connected Yes The quench spray subsystem flow- t rings in containment, one for 360* QSS rings in containment, paths are difTerent, however, each QS pump. they serve the same function and will be used to accordance with < .r approved procedures. This will , minimize any chance of operational c ero r. . QS pump design data: QSS pump design data: Yes The quench spray pumps are different,
, however, they serve the same function Flow = 2500 pgm. Flow = 3000 gpm. and will be operated in accordance Head = 270 ft.
Head = 330 ft. with approved procedurer. This will P40 tor Hp = 200 Hp. Motor Hp = 350 Hp. minimize any chance of operaticnal & o r ro r. ; t e
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DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 Dirr[RENCE ANALYSIS SYSTEM / COMPONENT . Chapter 13 - Quench Sargy Subsystes Safety Unit 1 Unit 2 Related Congents The re i s a " cutback MOV" and pa r- There is no " cutback MOV" on Yes The quench spray subsystem compon-allel orifice on the discharge or e i the r QSS pump d i scha rge. ents are dirrorent, however, they each QS pump which is interlocked serve the same function and will be with the RWST level, ope ra ted in accordance with approved p rocedu e ss. This will minimize any any chance or operational error. QS flow cutback on Unit I is an auto-
. matic actuation. Cutback valves are not required in Unit 2.
The re is a " divert line" on each There is no " divert line" on Yes Quench spray pump subsystem flow-QS pump d i scha rge l i ne inside either QSS pump discharge paths are di f ferent, however, they containment to supply cool water line, serve the same function and will be to the containment sump to in- used in accordance with approved crease the available NPSH for the . procedure,s to minimize any chance of RS pumps. ope ra t iona l e r ro r. A divert line is not required on Unit 2. The QS pumps do not have a Each QSS pump has a remote Yes Quench spray pump pressure indica-suction Pl. suction P1 in the control tion provided re lec ts new in s t rumen-room, tation in Unit 2. This instrumen-tation will be addressed by approved p rocedu res. This will minialza any ' chance or operational error. Additional quench spray pump in-strumentation provided will fu rthe r enhance the operator's ability to (control / monitor) the system. Ap-proved procedures will minimize any chance or operational error.
! hare is no comann "QS trouble" There i s a common ala rm. "QS Yes The operator response to quench a l a rm. Individual abnormal con- nystem trouble", which is acti- spray subsystem alarms is the ditions activate individual alarms va ted by a bno rma l cond i t ion s i n same at ei ther Unit rega rd less and/or input to the computer or the CSS or chemical injection or the initiating condition. -
SER. systems. Each abnorma l condi- Alarm response will be con-tion is a computer input, tion ducted in accordance with sp-proved procedures. l 47 4
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{ \ h U) %/ J DUQUESNE 1.1CHT COMPANY BEAVfR VALLEY PLANT L'MITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM /COMPOl(ENT _Ghenter 13 - Quench Sorav Subsystesi Safety gpit 1 . Unit 2 Rglated Comments The re it a status ;ight for QS Abnormal conditions in the QS Yes The operator response to the system inoperability which is , system activate a bypass /inop- quench spray subsystem alarm activated manually. Individual erable status light (common). is the same at either Unit abnormal conditions activate in- The individual conditions in- regardless of the initiating dividual alarms or inputs to the put to the computer or printer. condition. Alarm response coeputer or SER. Will be conducted in accor-dance with approved procedures. There is a FIS on each QS pump There are two FISs on each QS Yes The quench spray / chemical injec- - discharge line which: pump discharge line which: tion instrumentation is dif fer-ent, however, it serves the same
-activates a sov f low a l a rm. -activate the " trouble" ala rm function and will be used in -indicates locally, on low flow, accordance with approved proco- -is interlocked with the chemical -indicate riow. du re s . This will minimize any injection pumps. -activate the chemical injec- chance or operational error, tion pumps' di scha rge SOVs.
Quench spra)* instrumentation pro-vided reflects new ( system /a rrange-ment / components) installed in Unit
- 2. This instrumentation will be addressed by approved procedures.
This will minial2e any chance of ope ra t iona l e r ro r. Each QS pump discharge MOV: Each QS pump discha rge MOV: Yes The quench spray valves /flovpaths are different, however, they serve
-has no relier valvo. -has a relier va lve. , the same function and will be used -is normally closed. -is normally open. In accordance with approved proce-dures. This will minimize any chance or operational e rro r.
i QS pH is maint.aincd between 8.5 QS pH is maintained between 9.2 Yes The quench spray / chemical injec-and 10.9 while caustic addition and 10.1 while caustic addition tion subsystems are dirrerent, is occurring. is occurring. however, they serve the same function and will be operated in accordance with approved proco-du re s. This will minimize any chance or operational error. 9 e 48 t*
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Unit 1 Unit 2 Related Comments There is a manual valve on each There is a spectacle flange on Yes The quench spray subsystem compon-QS pump discha rge line loside ,
. each QSS pump discharge line ents are dirrereat, however, they containment. insioe containment. serve the sar.a functior and will be operated in accordance with ap-proved procedures'. This will min-laize any chance or oper6tional e rro r.
The Unit I and 11 QS system spray Yes The QSS spray heaoers are dirrerent, headers a re at dif ferent heights, however, they serve the same func-have a dirrerent number of nozzios; tion and will be used in accordance some of dirrerent types, and dir- with approved procedures. This rerent spray angles, will minimize any chance or opera-tinnel e r ro r, e 4 9 9 e 89 4 A
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'8EAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM /COM PONENT Chapter 13 - Quench Soray/ Recirculation Sorav Subsystem i
Safety Unit 1 . Unit 2 R3 fated Comments The QS pumps a re powered f rom The QSS pumps are powered f rom Yes The quench spray pumps are different, 480 V AC Bus 8N and 9P. 4160 V AC Bus 2AE, 2DF. however, they serve the same function and will be operated in accordance with approved procedures. This will minimize any chance of operational error. Ther6 a re four sepa rate 180* There are two 360* spray rings, Yes The RSS spray headers are dif ferent, spray rings, eacn scrved by one each cupplied by two RSS pumps, however, they serve the same func-RS pump, tion and will be used in accordance with approved procedures. This will minimize any chance of operational e r ro r. Two RS pumps are inside contain- All four RSS pumps are located Yes Although locations of the RSS ment (IRS), and two are outside outside containment. There is pumps and heat exchangers are dir-containment (ORS). The RS a recirculation spray cooler in Terent, the components still se rve i I coolers are inside containment. each RSS pump cubicle. the same.runtion. The use or ap-proved procedures, valves lists, and power supply lists minimize any chance of operational e r ro r. , The re is a domineralized water There is a domineralizar water Yes The RSS pump rill flovpaths a re , (BR) supply system in each ORS (RSS) supply system connected different, however, they serve the l to each RSS pump . rec i rcula t ion same function and w!Il be used pump cubicle that can be con-nected to each ORS pump seat line. A connection can be.made in accordance with approved system or casing. to the pump seal system. p rocedu re s. This will minimize j any ct.3nce of operationa l e r ro r. l 9 e 50 l
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t" , ,r.% . r .. DUQUESNE LIGHT CDMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYST EM/COM PONENT Chapter 13 - Recirculation Sorav SubsystRE Safety Unit 1 Unit 2 Related. Comments Reci rculation Spray (RS) coolers RSS coolers design data: Yes The RSS coolers are dif ferent, how-design data: ever, they serve the same function
-dry on both sides during and will be used in accordance with -d ry on sha l l (RS) side and filled no rma l ope ra t ion approved procedures. This will min-on tube (RW) side during normal -RSS water temperature; inize any chance of operational no rma l ope ra t ion. 196* in, 114* out, error. -RS water temperature; 139' in, -Service Water ( SW) temp-104* out, e ra ture; 85* In, 143* out. -RW water temperature; 85* In, 115.6* out.
ORS pumps design data: RSS pumps design data: Yes The .reci rculation spray pumps a re different, however, they serse the
-vertical turbine type. -vertical suction well type. same function and will be operated -have no water Jet exhauster. -have a water Jet exhauster, in accordance with approved proco-dures. This will minimize any chaace or operational error.
RS pump suction lines have no There is a capped test connec- Yes R.ccirculation spray subsystem in-test connections. There a re no tion on each RSS pump suction mentation provided reflects new T is on the RS pump discha rge line. T he re is a local TI on ( system arrangement / components) in-lines before the RS coolers. each RSS pump discharge line stalled in Unit 2. This instrument-before the RS cooler. ation will be addressed by approved p rocedu re s. This will minimize any
- chance of operational error.
The ORS pumps supply the HHSI Two RSS pumps (C and D) suhply Yes The recirc. spray / safety injection pumps with containment sump wa te r the HHSI pumps on recirculation flowpaths a re different, however, , in the event of LHSI pump failure phases with containment sump they serve the same function and only. Normally, the LHSI pumps water. Vill be used in accordance with ', supply the HHSI pumps with sump approved procedures. This will water during ti.e reci rcula tion minimize any chance of operational phases. e r ro r.
. Transfer to recirculation phase is an automatic actuation. The only opera tor action requi red is veri fi-cation which will be done by an approved procedure.
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- SYSTEM / COMPONENT Chaoter 13 - Recirc9lation Sorav Subsystag Safety Unit 1 Unit 2 Related Comments 1
Containment sump monitoring Containment sump monitoring Yes The reci rc. spray subsystem a la rms instrumentation: instrumentations are different, however, they serve the same function and will be re-
-2 LTs indicate level in the -2 LTs indicate in the control sponded to in accordanc6 with ap-control room, activate high room, activate the "RSS proved procedures. This will min-level a la rms, input to the trouble" a la rm. Inize any chance or operational SER. e r ro r.
-4 TEs (one on each RSS pump
-2 TRBs indicate in the control suction line) input to an Reci rcula tion spray /conta li.went sump room, auctioneering circult. The instrumantation provided will further /
highest of each train indi- enhance the operator's ability to cates in the CR. (cont rol/moni to r) the system. Ap-proved procedurns will minimize any any of operational error. Each ORS pump reci rculation lines A and B RSS pumps' rec i rcu- Yes The recirc. spray subsystem valves / has two manual valves (NSA-LS) tion lines have two mar.ual instruments are dirrerent, however, and a local Fl. va lves ( ADC-S), a roller va lve, they serve the same function and and a Pl. C and D RSS pumps' will be used in accordance with
. rec i rcu l a t ion lines have a man- approved procedures. This will ual va lves (NSA-0), a RO, a P1, minimize any chance or oporational and MOV that is interlocked e r ro r.
with the associated RSS pump flow. T he re a re no d ra i n l i ne s on the Each RSS pump casing has s Yes The rec i rc. spray subsystem flow-RS spray ring intet lines. Each drain line to vents and drains paths a re di rrerent, however, they RS pump has a casing drain line system. Each spray ring intet se rve the same function and will to ,its cubicle. line has a drain line inside be used in accordance with approved containment, p rocedu re s. This will minimize any chance or operational error. / l 4 T 52
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DUQUESNE LICHT COMPANY (v ) BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 13 - Recirculation Sorav Subsystte Safety Unit 1 Unit 2 Related Cogggg11 There are no FTs on the RS pump There is a FT on each RSS pump Yes The recirc, spray subsystem instru-d i scha rge lines. There is a F1 discharge line that Indicates mentation is dif ferent, however, on each recirculation line. in the control room (A, B C and it sorves the same function and D pumps) and controls the recir- will be used in accordance with cu l a t i on MOV ( C and D pumps ), approved procedures. This will minimize any chance or operational e r ro r. Recirculation spray pump flow transmitters provided reflect ./ new instrumentation installed in Unit 2. This instrumentation will be addressed by approved p rocedu res. This will minimize any chance or operational error. The RS pumps will auto start on The RSS pumps will auto start Yes Reci rc, spray pump auto sta rt is an CIB af ter a time delay of either on' CIB af ter a time delay or automatic actuation. The only oper-210 or 225 seconds. 210 seconds. ator action required is verification which will be done by an approved procedure. Each IRS pump has a shaft speed Each RSS pump has a shaft Yes Reci rculation spray pump instrumen-indicating light in the control speed f rA lca t ing Ilght in the tation provided reflects new Instru- ' room. The ORS pumps do not. control room. montation installed in Unit 2. This
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instrumentation will be addressed by approved procedures. This will minimize any chance of operational e r ro r. There is no common "f,S trouble" T he re is a common a la rm, "RS Yes The operator response to the recirc, alarm. Individual abnormal con- system troublo" which is acti- spray subsystem ala rms is the same ditions activate individual a l a rms vated by abnormal conditions at either Unit regardless of the in-and/or input to the camputer or in the RS system. Each abnor- itiating condition. Ala rm response SER. mal condition is a computer will be conducted in accordance with input. With approved procedures. e 53 D -
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, DEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chaoter 13 - RecirculatJg.n Sorav Subsystem Safety Unit 1 Unit 2 Related ComRfDts There is a status light for RS Abnormal conditions in the RS Yes The operator response to the re-system inoperability which is ac- syster activate a bypassed /In- circ spray subsystem alarms is tivated manually only. Individ- operable status light (common). the same at either Unit regard-ua! abnormal conditions activate lhe individual conditions input less of the initiating condition.
ala rms or input to the computer the computer or printer. Ala rm response will be conducted or SER. In accordance with approved procedures, a Thnre a re no local indicating- There are local indicating Yes Rec i re, spray / service water valve <- f indications provided reflect new in-l lights for the RS pump discharge lights for RSS pumps C and D MOVs or for the RS cooler RW discharge MOVs and for the strumentation installed in Unit 2. Inlet MOVs. RSS cooler SW inlet MOVs. This instrumentation will be ad-dressed by approved procedures. This will minimize any chance of . operational error. Recirc. spray / service water valve instrumentation provided will ru r-ther enhance the operator's ability to (control / monitor) the system. Approved procedures will minimize any chance or operational error. The ORS pump suctico valves are Each RSS pump suction valve Yes Although locations of the recirc. ,
- located in a valve pit with the is located in a separate valve sp ray pump suc t ion va lve s a re d i r-LHSI puep sump suction valves encapsulation between contain- ferent, the components still se rve between containment and the safe- ment and safegua rds area. . the same function. 1he use or sp-9ua rd s a rca , proved procedures, valve lists, and power supply lists minielzes any chance of operational error.
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DUQUES LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 13 - CID Slanal Safety Unit 1 Unit 2 Related Commgnts There are no status lights for There is a test bypass switch Yes CIB signal test instrumentation CIB test / bypass. There is no for each channel of CIB actu- provided reflects new ( system /a r-s tarm for test violation, two ation (containment pressure) rangement/ components) installed simultaneous channels in test with a status light. If two in Unit 2. This inst rumentation will actuate CIB. channels are tested simul- will be addressed by approved pro-taneously, a test violation cedures. This will minimize any a la rm is activated, chance of operational errors. CIB is manually actuated by de- CID is manually actuated by Yes The CIB actuation components and , pressing two tra in associated turning two associated switch logic a re di f ferent, however, pushbuttons; each train is in- handles; either set will actu- they serve the same function and dividually actuated, a to both tra ins, will be operated in accordance wi th approved procedures. This will minimize any chance of operational error. O e e I
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Y ,E DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 14A - Reactor Plant Samoling Safety Unit 1 Unit 2 Re la ted Comments There are 34 sample locations Unit 2 has 59 sample Yes The sample loca tions a re di fferent, that are taken at the Unit I locations. The samples however, they will be used in sample panels, have several dirrerent accordance with approved procedures, flowpaths and valves This will minimize any chance or compa red to Unit 1 The operational error, interconnections wi th the Post Accident Sampling System a re ve ry dirrorent. . 1 Steam generator blowdown Steam generator blowdown No The steam generator blowdown samples samples are cooled by samples a re cooled by two . cooling components are different, individual heat ex- heat exchangers in series however, they serve the same function changers with component with component cooling and will be opera ed in accordance cooling ( reactor plant). ( reactor plant) and a wi th approved procedures. This will temperature control minimize any chance or operational chilled water bath, e r ro r. No a la rms in the cont rol room A common t roub l e a l a rm No Reactor plant sampling ala rm response associated with Reactor Plant actuates in the control will be conducted in accordance Sampling, room due to cation con- with approved procedures, ductivity Hi, pH Hi, pH Low, Na Ili or ref rigerant system trouble for the steam generator steam or , blowdown samples. The actual condition actuates on a local panol. , No loop seal exists between A loop seal is built into No The pressurizer liquid / vapor sample the pressurizer liquid / vapor the lino connecting the piping are dirrorent, however, they < space sample line and the pressurizer liquid / vapor serve the same function and the saroty injection accumulator space samples downstream valve on the piping will be operated sample header, of the sample coolers and the in accordance with approveJ prncedures, safety injection accumulator This will minimize any chance of tank gas sample line. e rro r. 4 9 e 56 n
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f . f;)\ k' r>) d t) DUQUESNE LIGHT COMPANY J BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS
' SYSTEM / COMPONENT Chagler 14C - Post Accident Samolice System Safety Unit 1 Unit 2 Rel11ed Comments The PASS units designed by Yes The majority of the PASS system in di rrorent manufacturers. The each unit will be the responsibility flowpaths to and from the of the station chemist. Both the systems are arranged very operator and chemist will operate the dirrerent, with Unit 2 having system in accordance with approved many more a l ternate flowpaths procedures. This will minimize any including liquid sample points ctLnce of operational error, f rom residual heat removal _
. system, reci rc spray pumps A <. , ' and D and miscellaneous, sumps. , 4 e
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hN h %' DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _Ghteter 15 - Rx Plant Component Coolina Safety . Unit 1 Unit 2 Related Comments Unit #1 has CCR pump auto-start Unit #2 has CCP pump auto- No lhls is an automatic actuation. The at 110 psig, start at 105 psig, only operator action required is verification which will be done by an approved procedure. Unit #1 has trip valves isolating Unit #2 has only eight valves No The Uni t #2 system has fewer conta in-each individaul CCR containment to isolate CCP from contain- ment penetrations. The isolation penetration off of the main header ment on a CIB, two on each of on a CIB is an automatic actuation. on a CIB signal, two main supply and discharge The only operator action required is verification which will be done by _)' headers. These va lves a re MOVs and fall as is to maintain CCR an approved procedure. The supply flow. and discharge headers and isolation va lves a re different, however, they serve the same function and will be operated in accordance with approved procedures. This will minimize any chance of operational error. Unit #1 has TV's isolating dir- CCP supply is cut-off to all Yes These are an automatic actuations. forent P.A.B. headers. Unit #1 except three loads of the The only operator action required surge tank does not have a low P. A.B. headers by closing is verification which will be done low level feature to close these eight MOVs upon receiving by an approved procedure. The valves. Ai r-ope ra ted isolation either a CIA signal o r a_loy headers and va lves a re di fferent, valves are controlled by a CI A low lovgl In the surge tanks. however, they will be operated in
- signal only. These valvos are located in accordance with approved procedures.
the supply and return headers This will minimize any change of serving the auxilia ry build- operational error, ing loads. Unit #1 does not incorporate CCR Each CCP heat exchanger has No The DCVs will be operated in acco6-heat exchanger di f fe rent ia l i ts own di fferentia l PCV [2CCP- dance with approved proceduros, pressure control valves. DCV101A, B, or C] which modu- This will minimize any chance of ates open or closed as neces- operationa l error, sa ry to mainta in a set D/P across each heat exchanger. This allows equal load through each heat exchanger to supply a steady supply pressure to system components. e 61 _n f
?h D DUQUESNE LlGHT COMPANY BEAVER VALLEY PLANT UNITS,1 ANO 2 DIFFERENCE ANALYSIS SYST EM/ COMPONENT Chapter 15 - Rx Plant Component Cooline Safety Unit 1 Unit 2 Relatgd Comments Unit #1 has one CCR surge tank Uni t #2 has two CCP surge No The redundant surge tank provides for system expansion and contrac- tanks for system expansion more flexibility and stability to tion as well as head supply to and contraction as well as the system.
the CCR pumps. It has one head supply to the CCP level control valve and one flow pumps, it has a level totalizer, control valve and a flow totalizer for each tank. . Components served by CCR inside , Components served by CCP in No Unit 2 supply and return lines ~ the Unit #1 containment building side the Unit #2 cor.tainment provided are different, however, are being served by one 24-inch building are being served by they serve the some function supply and return header. two 18-inch supply and re turn and will be operated in accordance headers, with approved procedures. This will minimize any chance of ope ra t iona l e r ro r. Unit #1's containment instrument Unit #2's containment instru- No The containment air compressors a i r compressors a re being served ment a i r compressors a re cooling system are different, by chilled water. served by CCP via 18-inch however they serve the same headers, function 'and will be operated in accordance with approved p rocedu re s. This will minimize any chance of operational error. 9 Unit #1 RHR heat exchangers and Unit #2 RHR and pump seal No The RHR and pump cooling valves seal coolers isolation valves do cooler isolation valves can a re di f ferent, however, they serve not have any remote control be controlled from the shut- the same function and will be ( T he se a re ma nua l va lve s ) . down panel and the Train "A" ope ra ted in accordance with approved valve may be controlled from procedures. This will minimize any the alternate shutdown panel, chance of operational e r ro r. Unit #1 utilizes a FIO and has a Makeup to the neutron shield No The neutron shield tank makeup flowpaths are di f ferent, however, bypass flowpath for makeup flow tank subsystem consists of a to the neutron shield tank sub- CCP supply f rom a 4-inch line they serve the same function and system. serving the excess letdown and will be operated in accordance shield tank coolers flowing to with approved procedures. This the surge line through l2NSS- will minimize any chance of A0V101) but no FTO. operationa l error, , 6 0 62 n O
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BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEH/ COMPONENT Chagier 15 - Rx Plant Component Cool [D2 Safety Unit 1 Unit 2 Related Comments Unit #1 has two cooling coils on Unit #2 has one cooling coil No The cooling coils are dirrerent, sach containment penetration for each penetration requiring however, they serve the same requiring cooling. One is cooling, it is.sugplied by CCP f rom either 18 header function and will be operated in accordance with approved supplied by CCR from outside containment and runs the length (one manual valve open, the procedures. This will minimize or the penetration. The other is other closed) from outside any chance or operational error, supplied from inside containment, ' containment. runs along a short distance on the attachment plate and is cooled ' from CCR inside containment. It s loses cooling to the inside cooling coil on a CIA. Unit #1's CCR system supplies Unit #2's CCP system does No This reflects a design change CCR to its liquid wasto disposal not supply cooling to the from Unit I to Unit 2. This system equipment and RWST liquid waste system or the chance or operational error is ref rigeration uni ts RWST ref rigeration uni ts, minimal since the compurient cooling systems are not controlled by the number of loads but by pressure and temperature or the system. Valve lineups and load startups are conducted using approved p rocedu re s. 0 9 9 e e
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rp. . U v DUQUESNE LIGHT COMPANY O). BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM /CDNPONENT _Gbacter 16 - Supolemental Leak Collection & Release Sys. Safety Unit 1 Unit 2 _. Releted Comments SLCRS System normally collects SLCRS system does not Yes The SLCRS systems are dirrorent, air f rom the Gaseous Waste collect air from the however, they serve the same function Storage a rea. Gaseous Waste Storage and will be operated in accordance a rea and does no rma l ly with approved procedures. This will collect air from the PAB minimize any chance or operational and Solid Waste Building, e r ro r. I Gland Steam not discharged Gland Steam Exhaust is dis- Yes The Gland Steam Exhaust systems are out the elevated release charged out the Ventilation dirrerent, however, they serve the same ~ point. It discharges Vent, runction and will be operated in di rectly to the atmosphere. accordance with approved procedures. This will minimize any chance or operationa l error. Purging of Containment is in place of a Purge Exhaust Yes The system Containment Purge systems are accomplished by using a Purge Fan, Unit 2 uses a normal dirrerent, however, they serve the Exhaust Fan. SLCRS ran, same function and will be operated in accordance with approved procedures. This will minimize any chance or operationa l error. The Purge Exhaust filter By- ( MOD-21] and [ MOD-22) a re Yes The Containment Purge Systems switches pass [VS-D-5-1] and the Purge controlled by a common control are dirrerent, however, they serve the , Exhaust filter inlet (VS-D switch, same function and will be operated in 2 ] have sepa ra te cont ro l accordance with approved procedures, switches. MOD-21 compa rable to VS-D-4-1 This will minimize any chance of MOD-22 compa rable to VS-D-5-2 ope ra t iona l ,e rro r. t e e a 64
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1 '.O (/ DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS
; SYSTEM / COMPONENT Chapter 16 - Supplemental Leak Collection & Release Sys.
~
Safety l ynit 1 Unit P Related Comments Flow control is by manual Flow controlled automatically No The SLChR systems flow controls are sdjustment. by vortex dampers in exhaust differont, - however, they se rve the ran suction, same function and will be operated in j accordance with approved procedures. 1 This will minimize any chance of
. operationa l error, i .
CIA causes exhaust flow to be CIA place standby MFB in Yes Requires no operator action. All ; diverted through Main Filter se rvice. CIB does not affect are automatic actuations upon Banks. CIB causes charging system, receiving signal, f pump suction to divert to
- SLCRS.
i' ! MFBs have automatic deluge MFBs have manual spray system. NG Design changes on Unit 2. Operational * ! systen for extinguishing errors will be minimized by using j rires, approved procedures, i k I ( i 1 . l i i } d 6 9 i 1 + Y
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, L dl DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chaoter 17 - L,{ quid Wasts Safety Unit 1 Unit 2 Related Commeg13___
NOTE: Unit i Liquid Waste System evaporates and concentrates wa s te wa te r f rom Un i t I systems. The concentrated bottoms is sent to Unit 1 Solid Waste System and the evaporated overheads are dis-cha rged f rom the plant. Unit 2 Liquid Waste functions in ' j a s la l l a r manne rs howeve r, the steam 9enerator blowdown evaporator is used to concentrate and process high activity waste water. 0 0 t T e 9 e 67 O
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BEAVER VALLEY PLANT UNITS 1 AND 2 DiffEPENCE ANALYSIS SYSTEM / COMPONENT Chapter 17 - Llauld Weste Safety Unit 1 Unit 2 Re la ted Comments Unit #1's low level tanks have Unit #2's waste drain tanks No The waste dra in tank di scha rge MOVs on the tanks discharges, have manual operated valves va lves a re different, however, they on its tank discha rges, serve the same function and will be ope ra ted in accordance with approved p rocedu re s. This will minimize any chance of operational error. Unit gl's low level waste Unit #2's vaste drain tank No The automatic controls for the waste ' dra in tanks a re pumped down uses a D/P Indicator instead drain tanks are different, however, to a low level setpoint which of a tank level t ransci t te r they serve the same function and auto trip the pumps, to stop the pump (stops on will be operated in accordance with low suction pressure), approved procedures. This will minimize any chance of operational error. Unit #1 low level waste drain The Unit #2 waste drain tanks No The waste drain tanks are volumet-ricatly different, however, they tanks have a capacity of 1989 have a capacity of 7500 gallons,
;a l~ l on s , serve the same function and will be used in accordance with approved p rocedu res. This will minimize any chance of operational e r ro r.
4 e 9 e e 69
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-43 DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 '
DIFFERENCE ANALYSIS SYSTEM / COMPONENT _ Chapter 19 - Caseous Waste Safety ( Mnit 1 Unit 2 RelJted Comments I There is parallel overpressure Unit 2 surge and decay tank No The overpressure protection systems protection on Unit l's surge overpressure protection is a re dirrorent, however, they se rve tcnk and decay tanks. provided by means of a rupture the same function and will be oper-disc and reller valve set at ated in accordance with approved l l tank design pressure, p rocedu re s. This will minimize any chance of operational error. Unit I contains a FCV in the In Unit 2, there is a PCV in No The valves between the waste gas flowpath between the surge the flowpath to the vaste gas storage tank and the surge tanks s/ tank and decay tanks. storage tanks f rom the surge tanks a re di rrorent, however, tank. This PCV opens at a they serve the same function and pressure setpoint of greater will be operated in accordance than 65 psig. with approved procedures. This will minimize any chance of ope ra t i ona l e rro r. A normally isolated bypass line No bypass of the surge tank No The flowpaths are dirrerent, however f rom the overhead gas compressor and gaseous wasto storage the system will be operated in accor-discharge to gaseous vaste dis- tanks is provided for down- dance with approved procedures. This posal filters inlet header is stream of the overhead gas will minimize any chance of opera-provided to bypass the surge tank compressors in Unit 2. tiona l error, and waste decay tank. Unit 1 has nc air ejector vent Unit 2 has air ejector vent No The air ejector systems are similar chillers. chliiers designed to dehumidify and will be operated in accordance the effluent gases from the* with approved procedures. This a i r ejector. will minimize any chance or operationa l error. There a re no a i r ejector Unit 2 has air ejector vent Yes The systems are similar and cha rcoa l delay beds or air cha rcoa l delay beds to provide will be operated in accordance ejector vent filters in sufficient holdup for decay of with approved procedures. Unit 1. short lived radioactive This will minimize any char.ce components. Unit 2 also has air or operational error, ejector vent ritters. e h a 70
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p . G DUQUESNE LIGHT COMPANY O BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _Chealer 19 - Gangggg, Waste Safety
} Unit 1 Unit 2 Related Comments I
i Unit I has no alternate con- Unit 2 has an alternate con- No The swoop ga s l i nes a re i tainment purge blower on its ta i nment pu rge b l owe r on i t s simliar and will be used 1 sweep gas line, sweep gas line, in accordance with approved e procedures. This will minimize
. any chance of operational error, i
] Unit l's FCV on the decay Unit 2's FCV on the decay tank No The FCVs on the decay tank discharge header receives a close due to an automatic tank dischargo receives no signals from the decay tank close signal if the decay tank actuation. The only operator N.j .I radiation monitor. , radiation monitor detects a action required is l high-high radiation condition. verification which will be
- done by an approved procedure.
Unit l's radiation monitoring Gaseous Waste Radiation Yes The radiation monitor flowpaths
; for gasecus waste i s provided mon i to ri ng is provided at the a re di *ferent, however, they for the waste gas decay tanks gas waste storage tanks via . serve the same function and , and at the discharge of the .lRQ-101], at the storage '
will be used in accordance gaseous waste disposal tanks via lRQ-104 and 105), wi th approved procedures. . blower, at the air ejector vent This will minimize any filters discharge via (RQ- chance of operational error. 102], and at the sweep gas ulowers discharge via lRQ-107). Unit 1 has no remote operated Unit 2 has an AOV that can No The system decay tanks flowpaths isolation valve supplying be opened or closed remotely are similar and will be used the decay tanks, to batch feed the decay tagks. In accordance with approved a p rocedu re s. This will minimize l any chance of operational error. i l , i i i . I a i ! 71
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h' N.) Q DUQUESNE L1GMT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _Chagier 19 - Gaseous Waste
* - Safety Unit 1
- Unit 2 Related Comments Unit 1 has an outict header Unit 2 has* an inlet header Yes The decay tanks isolation valves trip valve on the decay tanks isolation valve to the decay a re in di fferent locations, how-discha rge header. , . tanks and an outlet header ever, they serve the same function i sola t ion va lve f rom the and will be operated in accordance decay tanks setup so that if with approved procedures. This one of the valves is open, ~ will minimizq anf chance of the other will be closed. operational error.
Unit i has no PCV upstream Unit 2 has a PCV located up- No This is an automatic actuation. - of the overhead gas com- stream of the overhead gas The only operator action required p re s so rs. compressor designed to open is verification which will be ' automatically on a low done by an approved procedure. pressure signal f rom a p re s s-ure switch upstream of the _ The overhead gas compressor knock out pot. (This ensures flowpaths are siellar and will that the system is main- be used in accordance with approved tained between established p rocedu re s .' This will minimize limits), any chanCo of operational error, s Unit I has no remote-operated Unit 2 has a GW storage tank No The CW storage tank inlet GW decay tank inlet header inlet header isolation valve , headers are similar and will isolation valve, opened periodically for batch be used in accordance with discharge to the decay tanks approved procedures. This will ( remote operation), minimize any chance of operational e r ro r. S Unit I decay tank feed Unit 2 decay tank feed valbes No The instrumentation and control va lves a re interlocked with a re open-close va lves. No o f the va lve s a re d i f fe rent, the N2 supply valve, sample other interlocks. however, they serve the same valves, N2 flush valses, a function and will be operated in selector switch and a reset accordance with approved procedures. pushbutton. .This will minimize any chance
, of operationa l error.
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s (// DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYST EM/COM PONENT Chapter 19 - Cassous Wasta Safety i Unit 1 Unit 2 Related Comments Unit 1 decay tank bleed Unit 2 decay tank bleed Yes The instrumentation and control of valves a re interlocked with va lves a re open-close va lves, these decay tank va lves a re di f ferent, a selector switch and reset however, they serve the same function pushbutton in the control and will be operated in accordance room. Also on a low with approved procedures. This will d i lut ion flow or high-high minimize any cnance of operational radiation, these valves error, t ri p. , c
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Unit 1 has a three-point Unit 2 has a multipoint No The number and locations of indicators recorder (one polns for each p re s su re recorder and seven a re d i f fe ren t, however, they serve decay tank) in the control p re s su re indicators (one for the same function and will be room, each decay tank) on a gaseous ope ra ted in accordance with approved waste storage tank panel, procedures. This will minialze any chance of operational error. Unit 1 has its own process Unit 2 utilizes Unit l's Yes The systems use the same process vent header, process vent header, vent header and will be operated in accordance with approved procedures. This will minimize any chance of operational error. Unit I provides no annuncia- Unit 2 provides annunciator Yes Alarm response will be conducted . tor a la rms for the rupture ala rms for the rupture discs in accordance with approved discs located at the surge located at the surge tank and p rocedu re s, tank and the waste gas char- the waste gas charcoal delay coal delay beds. beds. t 9 9 9 73 _ _ _ . _ _ _w
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e BEAVER VALLEY PLANT uni ~S 1 AND 2 DIFFERENCE ANALYSIS / 2 SYSTEM / COMPONENT _Cha9ter 19 - Gaseous _deste Safety , Unit 1 Unit 2 P, elated Comegats Unit I provides no decay time Unit 2 Gaseous Waste System No The main condenser air ejector i for its main condenser air provides decay for both the. l ines a re s imi la r and wi l l be
\
ojector. BVPS-1 and 2 main condenser used in accordance with approved' ,, air ejectors (not Just BVPS-2 p rocedu re s. This wil! minimize any a ir ejector). chance br operationdi e r ro *. In Unit.1, effluent condensa- In Unit 2 effluent condensa- No The dra"snage flowpaths from s Lion from the vaste gas chillers tion f rom the waste gas the waste gas chillers are 4 flows to the Degasirler over- chillers is captured by as- d i f fe rent, however, they .s / head vent chiller of and then sociated water traps and is serve the same function and 4 will be operated in accordance
- to [DG-Tk-2]. transferred to the prima ry '
with approved proc 6durass. This
~i drains transfer tank via a IIquid seal, will. minimize any chancs of operationa l error. ,
Unit I has two knock out . r Unit 2 has one knock out pot No The knock out pots serve similar . pots. One with chilled water with heat tracing prior to functions and will be cperated in - ' cooling. the other wi thout. and af ter i t, accordance with approved procedures. i This will minimize any chance
- of operatlorea l error.
a Unit 1 has a level alarm on Unit 2 has a level indicating No This is an automatic actuation. Its second knock out pot, switch on its knock out pot The only operator action required ' that will automatically close is verification which will be done an inlet valve [LCV-1141.if by an approved procedure. . level in the knock out pot * ! gets too high. The operator response to the 'ala rm 4
- is the same at either unit rega rd-less of the initiating condition. '1 Ala rm response will be conducted in accordance with approved procedures.
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4 4 BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _ Chapter 21 - Main Stegg
, Safety Unit 1 Unit 2- Rela 1gd Comments A flow venturi nozzle is used to Main steam flow is measured Yes The flow measuring devices for measure main steam flow. Unit 1 across a restricting orifice main steam flow are dirrerent, venturi is located downstream of located at the top of each howe ve r, they se rve the same the steam generator, steam generator. The orifice function and will be operated in will restrict flow on a accordance with approved proce-steamline break, dures. This will minimize any chance or opera tiona l error.
A non-return valve is used to Main steam trip valves will Yes This is an automatic actuation. l prevent reverse flow through the close on a main steamline The only operator acteon required main steam trip valve on a line b rea k, is verification which will be done break, by an approved procedure. 1he residua l heat release valve lhe residual heat release Yes The residual heat release valve and the atmospheric dump valves and the atmospheric dump and atmospheric dump valves for are 4 and 6 inch valves, valves are 8 inch valves. Unit 2 must have a larger capacity respectively, to satisfy cold shutdown require-ments as indicated in SRP 5.4.7. The RHR and atmospheric dump valves are dirrerent, however, they serve the same function and will be op-erated in accordance with approved procedures. This will minimize any chance or operational error. , The residual heat release valve The residual heat release and No The residual heat releases atmo-and the atn.) spheric dump valves the atmospheric dump valve's spheric dump valves are dirrerent, a re a i r opera ted. a re electro / hydraulic however, they serve the same func-ope ra ted. tion and will be operated in accor-dance with approved procedures. This will minimize any chance or ope ra t i ona l error. Main steam trip valves are check Main steam trip valves are Yes The main steam trip valve designs va lves, wi th a i r opera tors. ball va lves, and electro / a re di rrerent, however, i t se rves Closed due to steam force. hydraulic operators. Closed the same function and will be op-due to spring force. e rs ted in accordance with approved . p rocedu re s. This will minimize any chance or operational e rro r. l I . 75
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I . t ('\n,); DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 OlFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 21 - Main Stgag Safety Unit 1 Unit 2 Related CommenL3 No steamline isolation push- Train A & B pushbuttons for Yes The operator can initiate closure button, main steamline isolation. of main steam valves with two pushbuttons por train in Unit 2. Main steam isolation valve MSLIV test pushbutton with 2 Yes The MSLIV test system is different, (MSLIV) test pushbutton with pushbuttons for test reset, however, it serves the same func-automatic reset. tion and will minimize any chance of operationa l error.
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One main steam drain trip valve Two drain trip valves in Yes No change hat, been made in the op- {TV-MS-111A, B, Cl on each series on each header. eration of the drain trip valves. header. T.*s valves will be operated in ac-cordance with approved procedures. This will minimize any chance of ops ra t i ona l e r ro r. g ~ - .- S 9 a 76 t .. A
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( - DUQUESNE LIGHT COMPA%Y , BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEH/ COMPONENT Chapter 24 - Feedwater Safety Unit 1 Unit 2 Related ComeRDAs One common HOV (normally open) The steam supply to the steam- No On Unit 1 a manual valve align-in series with two normally driven aux feed pump is isola- ment will isolate a steam supply closed TVs. Open any IV and tion from each steam header by line. The steam supply valve the steam-driven aux feed pump two no rma l ly closed SOV's, alignment to the steam-driven will start. Opening the two SOV's on any aux reed pumps are dirrorent, steam header will start the however, they serve the same pump. runction and will be operated in accordance with approved p rocedu re s. This will minimize ,, any chance of operational error. Prima ry plant demineralized water Prima ry plant demineralized No The prima ry plant domineralized storage tank chemicals are mixed water storage tank ha , itn water storage tank chemical ad-by the aux feed pumps, own chemical addition pump. dition systems are dirrerent, however, they serve the same function and will be operated in accordance with approved procedures. This will minimize
, any chance or operational e rro r.
Motor-driven aux feed pumps can Motor-driven aux feed pumps Yes The auxila ry reedwater pumps dis-be valved into either discharge can only be valved into one charge valve alignment i s d i rre r-header, discha rge header. ent, however, they serve the same function and will be operated in . accordance wi th approved proce-dures. This will minimize any e chance of operational error. No sta rt-up feed pump, lias a sta rt-up feed pump used No The additional start-up feed pump during 109 powe r ope ra t ion s is similar in operation / control - to the main reedwater pumps and will be operated in accordance wi th approved procedures. This will minimize any chance or operational error. Feedwater conta inment isolation Feedwater conta inment isola- Yes The type or reedwater isolation valve is a MOV. ation valve i s a hyd rau l ic valves are dirrorent, however, ,
. valve. they serve the same function ,
and will be operated in accor-dance with approved procedures. . This will minimize any chance or operat iona l e ro r. 77
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DUQUESNE LIGHT COMPANY (Q : BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _ Chapter 26 - Ma ln Turbine Cond6nsgI Safety Unit 1 Unit 2 Relatgd Comments Electro-Hydraulic high pressure E-li high pressure fluid is Yes The E-H high pressure riuld systems fluid is supplied to turbine supplied to turbine steam a re d i f fe ren t, however, they se rve steam valves servo-actuators, valves servo-actuator and the similar functioris and will be oper-auto-stop emergency trip ated in accordance with approved header Soys 12iMA-SOV-1 AST, procedures. This will minimize any 2AST, 3AST, 4AST ), and chance or operational error, turbine trip device. Utilizes mechanica; piston actu- Utilizes solenoid valves to Yes The turbine trip devices are dir- / a' ors in the auto-stop system to receive various turbine trip rerent, however, they serve the ef fect various turbine trips, signals to effect a turbine same function and will be opercted trip. In accordance with approved proce-dures. This will minimize any chance or operational error. l20-OPC-1 and 2] turbine trip Unit 2 has *imilar OPC trip Yes , The O.P.C. actuation signa ls a re , valves will open to cause a tur- valves whicu have all the same d i f fe ren t, however, they serve bine trip for certain initiating trip initiations except reac to r similar functions and will be conditions, trip, steam generator Hi/Hi ope ra ted in accordance with level saraty injection feedwater approved procedures. This will isolation signal which are not minimize any chance or opera-present on Unit 2. ational error. Depressing one out of twn manual Manual turbine trip f rom con- Yes The manual trip pushbuttons are ' turbine trip pushbutton in control t ro l room requires two out of d i f fe rent, however, they serve room will cause a turbine trip, two manual pushbuttons to be the same function and will be dep re s sed . ope ra ted in accordance with approved procedures. This will minimize any chance or opera-tiona l error. Thrust bearing trip is sensed by Thrust bearing trip is sensed Yes The thrust bearing trip devices trip device oil bachpressure and by two pickup coils located a re d i f fe rent, however, they serve actuated through a mechanical adjacent to the thrust bea ring. the same function and will be op-pisten. ersted in accordance with approved procedures. This will minimize any chance or operational error. e 0 O 80 m
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BEAVER VALLEY PLANT UNITS 1 AND 2 DlFFERENCE ANALYSIS SYSTEH/ COMPONENT Chapter 30 - Service Water o Safety Unit 1 Uqtt 2 Related Comments Jeal water supplies: Se rvice wa te r pump sea l Yes The se rvice wa ter sea l pump wa te r water is supplied f rom: system is different, however, they
- a. Unit 1 fil tered water, serve the same function and will
, b. Sand filter system, a. Unit 1 f i l te red wa te r, be operated in accordance with
- c. RPRW pump supply headers b. Off of the service water approved procedures. This will
- d. Discharge of each RPRW pump, supply header. ,
minimize any chance of opera'tional e r ro r. TPRW pumps have supplies 1, 2, and 3. , j RPRW pumps have supplies 1, 2, 3 and 4. Loads supplied by Unit 2 ser- Yes The Unit 2 service water system vice water which are not sup- has additional loads, however plied by Unit 1 TPRW or RPRW: they will be ope ra ted in accor-dance with approved procedures,
- s. Rod con t ro l a rea a i r con- This will minimize any chance ditioning units, of operational error,
- b. Sa fegua rds a rea a i r condi-tioning units.
- c. Supply to fire system booster pump.
- d. Main steam valve room cooling.
Recirculation spray HXs have a Reci rculation spray HXs have No The recirculation spray HXs chemical chemical addition tank and pump. no chemical addition tank or addition systems are different, how-pump. ever, they serve the same function and will be used in accordance with approved procedures. This will min-inize any chance of operational error. .
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The four recirculation spray HXs The four recirculation spray Yes The recirculation spray HX iso-a re isolated by four normally HXs a re i so la ted by two no r- lated MOV a rrangements are dif-closed MOVs. Each RPRW header mally closed MOVs. One MOV ferent, however, they se rve the ha s two MOVs i n pa ra l le l , isolates the supply for each same function and will be used service water header. In accordance with approved pro-cedures. This will minfalze any chance of operational error. F e 84
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(: ' , h,A N.) DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 30 - Service Water Safety Unit 1 Unit 2 Related Comments The CCR HXs have two MOV isola- The CCP HXs have one MOV iso- Yes The prima ry plant component cooling tion valves in series on each lation valve on each supply water HX isolation MOV arrangements RPRW header, header, a re dif ferent, however, they serve the same function and will be used in accordance with approved procedures. This will minimize any chance of oper-
' ationa l error,
( -/ No automatic isolation of cooling Unit 2 has two MOVs in series Yes The cooling water supply to the water to the CCT HXs or chillers. ( f rom each supply header) which chillers and seconda ry plant automatically close on a CIA component cooling water HXs are signal to isolate the seconda ry different, however, they will be component cooling water HXs and ope ra ted in accordance with ap-the chillers, proved procedures. This will minimize any chance of operational e r ro r. Seal water supplies have no Normal seal 1820 f rom the fi l- Yes The seal water automatic isolation automatic isolation, tered water system isolates signals are different, however, on a safety injection signal, they serve the same function will be operated in accordance with ap-proved procedures. This will min-imize any chance of operatinnal e r ro r. . Unit 1 has three reactor plant Unit' 2 has three service water Yes The service water system arrange-river water pumps (RPRW) for pumps to supply river water for ment is different, however, it primary side cooling and two tur- both seconda ry and prima ry serves the same function as the bine plant river water pumps sides. RPRW and TPRW pumps and will be (TPRW) for seconda ry side cooling, ope ra ted in acc irdance wi th ap- / proved procedures. This will minimize any chance of operational e r ro r. RPRW pump capacity - 9.000 gpa. Service water pump capacity Yes The river water pump capacities are TPRW pump capacity - 16,000 gpm. 15,000 gps, d i f fe ren t, however, the pumps serve the same function and will be oper-ated with approved procedures. This , will minimize any chance of operational , e r ro r. e 85 nM -
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( ( V DUQUESNE' LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chanter 30 - Service Water t Safety Unit 1 Unit 2 Related Comments The two reci rculation spray HXs The two recirculation spray Yes The recirculation spray HX supply " supply header cross-connects HXs supply header cross-connect header cross-connects are different, isolated by a normally closed i s i so la ted by no rma l ly closed however, they serve th6 same func-MOV. manual valve. t ion and wi l l be ope ra ted in ac-cordance with approved procedures. , This will minimize any chance of , ope ra t iona l e rro r. All river water cooling discharges Discharge f rom the reci rcula- Yes The system discharge flowpaths t_/ i to the circulating water system tion spray HXs and all safety- are di fferent, however, they . except cooling for the diesel related equipment discharges to serve the same function and gsnerators which discharges to the the emergency outfall st ruc tu re, will be used in accordance s to rm sewe rs, with approved porcedures.
. This will minimize any chance ,
of operational errors. RPRW pumps auto sta rt on a low Service water pumps have no Yes The RPRW pumps and service water CCR header pressure, auto start on low system pumps low pressure auto start sig-p re s su re, nel a re dif ferent, however, they serve the same function and
- will be operated in accordance +
with approved procedures. This will minimize any chance of oper-ationa l error. 9 RPR' pumps each have two dis- Service water pumps A and B Yes The service water pump discharge charge MOVs. one to each supply have only one di scha rge MOV' va l ves a re d i f fe rent, however, header, going to a single supply header. they serve the same function and Pump C has two discha rge MOVs, will be operated in accordance e one to each supply header. with approved procedures. This The re a re manua l valves which will minimize any chance of ss' connect the A and 8 pumps dis- ope ra t iona l e rro r, charge line not supplied through the MOV. Se rvice water pump's sta rt-stop Yes Moderate operationa l impact. > logics have several d i f fe rences when compared to the RPRW pumps on Unit 1. 7 e b 86 t
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k k. DUQUE$NE L1GHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 30 - Service Water Safety Unit 1 Unit 2 Related Comments Auxilia ry river water pumps have Standby service water pumps Yes The backup river water pgs auto-no auto-sta rts, auto-start on ' low service start logic is different, Mweve r, water supply header pressure. the pumps serve the seme function and will be operated in accordance with approved procedures. This minimize any chance or operational e rro r, s Service water supply as a Yes Moderate operationa l impact, backup for the containment a i r reci rculat f ore cool ing coils has a dirrerent supply and discharge piping and valve a rrangement when com-pared to Unit 1 RPRW backup supply. O e t
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9 i , f% ,2) - DUQUES E' LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS
- SYSTEM / COMPONENT Chapter 33 - fire Protection System Safety Unit 1 Unit 2 Related Comments Water system supplied by two per- Water system supplied by Unit Yes The fi re pump a rrangements a re manent fire pumps. I fi re pump a nd a n add i t iona l d i f fe rent, however, they serve emergency booster pump if Unit the same function and will be 1 supply is lost. operated in accordance with approved procedures. This will minimize any chance of opera-tional e rro r.
I Water spray systems (sprinkler Water spray systems protect Yes the water systems protected are and deluge) protect certain com- areas similar to Unit I and d i f fe rent, however, they serve ponents and a reas, add i t i ona l a rea s not cove red the same function and will be by Unit I systems. operated in accordance with ap-proved procedures. This will minimize any chance of operational e rro r. 10 ton CO2 system protect certain Unit 2 has a 20 ton CO2 supply Yes The CO2 areas protected are dir-safety-rela ted a resa, which protects similar areas ferent, however, they serve the to Unit 1 and additional areas same function and will be oper-and safety-related a reas, ated in accordance with approved p rocedu re s. This will minimize any chance of operational error. CO2 automatic actuation is blocked CO2 automatic actuation is Yes The CO2 actuations are dif ferent, in diesel cenerator rooms during a not blocked in diesel gener- however, they serve the same func-CIB and lot s of normal power to ator rooms during a CIB and tion and will be operated in accor-emergency t.us. loss of normal power to ' dance with approved procedures, e emergency bus. This will minimize any chance of operationa l error. Halon systsa protacts two (2) Halon system protects two (2) Yes The halon areas protected are sa fe ty-re l a ted a rea s and ( 3 ) safety-rela ted a reas. d i f fe rent , however, they serve nonsa fety-re la ted a rea s, the same function and will be ope ra ted in accordance with approved procedures. This will minimize any chance of operational e r ro r. 9 4 0 88
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\s f DUQUESNE L1GHT COMPANY BEAVfR VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM /COMPOhiNT . Chagier 3as - Comoressed Ai r Safety Unit 1 Unit 2 Related Comments Three station air compressors Two s ta t ion a i r comp re s- No The sta t ion a i r comp ressors a re sach with a capacity or 350 scra. sors each with a capacity dirrorent, however, they se rve the of 728 scfm. same function and will be ope ra ted ,
in accordance with approved p rocedu re s. This will minimize any chance or operational e rro r. Station air compressors are Station a i r compres' sors No The station air compressor control l controlled from the control room. can be controlled from locations are dirrerent, however, either the control room they have similar control inputs or at its local control a nd wi l l be ope ra ted in accordance panel. with approved procedures. This will minimize any chance of operationa l error, instrumentation provided will further enhance the operator's ability to (control / monitor) the station a i r compressors. Approved procedures will minimize any chance of operationa l e rro r. Station instrument air emergency Station instrument a i r Yes The station instrument air backup backup supply to the containment emergency supply to the supply isolation valves to the . instrument air system is a manual containment instrument containment instrument air valve. a i r sys tem i s a MOV system are dirrerent types of isolation. e valves, however they serve the same function and will be ope ra ted in accordance with approved p rocedures. This will minimize any chance of operational e r ro r. / 9
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iv) 1 ( (v) DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DI FTERENCE ANALYSIS SYSTEM / COMPONENT Chagter 34 - Comoressed Air Safety Unit 1 Unit 2 Related Comments There a re no condensate There is a condensate No Due to the design improvement polishing a i r compressors. polishing compressor a i r of adding a condensate polishing system. system on Unit 2, the condensate polishing air compressor was required. The compressor is of minimum operationa l impact because it operates similar to the Unit 2 station a i r compressor. Two containment instrument Two containment instru- No Al though the containment a i r com-ai r compressors a re located ment air compressors are pressor locations are different in containment. located in the main steam the components still serve the valve room, same function. The use of ap-proved procedures, valve lists, and power supply lists minimize any chance of operational e r ro r. Containment ins t rument a i r Conta inment a i r compressors- No The containment air compressors compressors a re non -lubricated are centrifugal water a re d i f fe rent, however, they se rve rec e p roca t i ng comp re s so rs sealed compressors with a the same function and will be with a capacity of 50 scfm. 30 scfm capacity, ope ra ted in accordance with approved p rocedu res. This will minimize any chance of operational e r ro r. l 1 The whole containment i n s t ru- The containment instru- Yes The containment air system component ment air system is located in ment a i r system has con- , locations are different, however, they containment, thus no contain- tainment penetrations serve the same function and will be ment isolation valves. with MOV isolation valves, ope ra ted in accordance with approved procedures. This will minimize any chance of operational e r ro r. - The Unit 2 containment i n s t rumen t a i r conta inment isolation valves have an automatic closing actuation. l The only operator action required is verification which will be done by approved procedures. l 9 l l e l l l 90
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DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chaoter 34 - Comoressed Air Safety Unit 1 Unit 2 Related Comments containment instrument ai r containment instrument Yes The Unit 2 containment instrument air system has one backup supply air system has two back- system has an additional backup f rom the station instrument up systems: supply from the station air system, ai r system, however, they serve the same function , a, Station instrument air, and will be operated in accordance
- b. Station air, with approved procedures. This will minimize any chance of operational e rro r.
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DUQUE5N LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 ANO 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 36 - 4KV Distribution
, Safety Unit 1 Unit 2 Relaled Comments The two emergency 4 KV buses The two emergency 4 KV Yes The methods of load shedding on a have a stub bus tio breaker buses do not have a stub CIB condition are dirrerent, how-which trips on a CIB signal, bus tie breaker. Indi- ever they both serve the same vidual losd breakers function, receive a CIB trip !
signal. This is automatic actuation. The
- Only operator action required is '
verification which will be done by an approved procedure. i Unit does not have a Kirk Unit 2 has Kirk key Yes Interlock provided reflects new key interlock, interlocked 4 KV dis- 4 KV disconnect switches installed connect switches feeding, in Unit 2 This interlock will be 1 [2SWS-P-21C], l2CCP-P- addressed by approved procedures, i 21C], {2CHS-P-21C], from This will minimize any chance or one emergency bus or the operational error. i i other. s 4 l 1 i e 1 ,) l c i i i f 92 4 ' 4
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(/n f" >KJ DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _. Chapter 36 - 4KV Dlatribution Safety Unit 2 Related Comments Unit 1 Diesel generator voltage Unit 2 diesel generator Yes The voltage controls are dirrorent, control from the Unit I con- voltage control from the however, they serve the same function t ro l room is a single voltage control room is a base , and will be operated in accordance control switch, adjust, voltage adjust, with approved procedures. This will base to voltage transrsr minimize any chance of operational error, switch, and a null meter. Instrumentation provided will furthe r enhance the operator's ability to control the system. Approved procedures will minimize any chance or operational e rro r. e O T e D 93
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(~ O\ G DUQUESNC L1CHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 36 84 kV Distribution Safety Unit 1 Unit 2 Related Comments Diesel generator rating con- Diesel generator rating Yes
- tinuous 2850 kw. 3950 horse- continuous 4238 kw, 5899 The Giesel generators are dit'ferent, power, speed 900 rpm. ho rsepowe r, speed 514 rpm. however, they serve the same function and will be operted in accordar.ce Fuel storage tank PO,000 Fuel storage tank 58,000 with approved procedures. This will gallons, gallons, minimize any chance or operational e r ro r.
Ai r-sta rt ing motor. Ai rported to cylinders. *
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sNone of these differences will change the operation or the diesel gene ra to r. The increased capacity of the generato.- is due to additional Ibad on the emer-gency buses, and reserve capacisy for ruture modi fica tions. The auto start s igna l s a re the sa me a t both units. E a 6 9 s O e 94
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N , (V) DUQUESNE I.lGHT C08 9PANY (vl BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS
, SYSTEM /CDMPONENT Chaoter 15 - 4kV Distribution Safety Unit 1 Unit 2 Reisted Comments Some of the equipment at Unit Equipment on Unit 2 that is Yes These differences will havc rinur 1 that requires a power supply dif ference than equipment ope ra t iona l impact and in important f rom the 4 KV distribution on Unit 1 may require a cases, will be noted in those system, may not exist at Unit dif ferent electrical dis- portions of this report dealing 2 due to differences in tribution arrangement. with each of the systcm and systens and components f rom component differences.
Unit I to Unit 2. l . .) The 4kV normal buses at Unit Un i t 2 4KV no rma l buse s No This is an automatic actuation. I have only a fast automatic have a fast and delayed The only operator action required bus transfer scheme. , automatic bus transfer is verification whicit will be done scheme, by an approved procedure. 125 VDC breaker control powe r 125 VDC breaker control Yes Alarms provided at Unit 2 will is supplied to each 4 KV power is supplied to each further enhance the operator # s breaker by a 2-pole Heineman - 4 KV breaker by a 3-pole ability to monitor the systam, b rea ke r. Heineman breaker. T hi rd Approved procedures will minimize pole is used for super- any chance of operational error, vi so ry a la rm. Normal 4 KV bus supply Normal 4 KV bus supply No The two power supplies for Unit 2 breakers have dua l trip coils breakers have dual trip breakers are prov ded for redundancy. , powered f rom a single 125 VDC coils powered from two lhere is no operational impact, power supply. Independent 125 VDC power supplies. , S T e D 95
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BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 37 - 480 V system Safety Unit 1 Unit 2 Related Comments Unit I has no annunciator for Unit 2 has an annunci- No Alarm response will be conducted in loss cf DC control to.the ator for 480 V bus loss accordance with approved procedures, normal 480 V substations. of control DC. The com-puter will indicate which of the four normal substations has lost DC control power. Unit i emergency 480 V buses do Unit 2 emergency 480 V Yes The CIB breaker trips are dirrerent, N) have a stub bus, buses do not have a stub however, they serve the same fynction bus. CIB trips are wired and will be operated in accordance directly to the indivi- with approved procedures. This will dual 480 V reeder minimize any chance or operational a b rea ke rs. error. Unit I has sixteen 480 V loads Unit 2 has thirty-six Yes Instrumentation provided reflects that can be transferred to the 480 V toads that can be the new shutdown panel design shutdown panel. transferred to the shut- installed in the Unit 2. This down panel, instrumentation will be addressed by approved procedures. This will minimize any chance or operational e r ro r. Unit I does not have a Kirk key Unit 2 has an extra Kirk Yes The key interlock on the transfer interlock. key interlock on the switch is dirrerent, however, it transfer switch breakers
- serves the same function and will for the 480 V contain- be operated in accordance with ment ai r reci rculation approved procedures. This will ran C. minimize any chance or operational e r ro r. +
Unit 1 does not have this U.V. Two PT blow ruses on Emergency Yes Minimal ope ra t iona l impact. This is trip associated with PT blown Busses will initiate an U.V. an automatic trip. The operator's ruses, trip. response to an emergency bus U.V. condition would be the same in e i the r uni t no ma tte r wha t initiated the trip. 9
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DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 37 - 480 V System Safety Unit 1 Unit 2 Related Comments Unit 1 does not have back-up Unit 2 has 480 V contain- Yes 480 V containment penetrations distribution, ment penetrations back-up back-up protection cabinets re-protection cabinets. flect new components installed in Unit 2 An OM deficiency report has been submitted to add a procedure which addresses theso cabinets. This will minimize any chance of operational error. .,
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Unit I does not have therma l Certa in emergency MCC Yes This is an automatic actuation. The overload bypasses for emer- powe red loads have thermal only operator action required is gsocy MCC toads during CIB. overload bypasses (auto- . verification which will be done by matic) for CIB conditions, an approved procedure. 9 a 9 I e 97 e
DUQUESilE LICHT COMPANY L)
, SEAVER VALLEY PLANT UNITS 1 AND 2 OlFFEREllCE ANALYSIS-SYST EM/ COMPONENT Chanter 38 - 120 VAC Safety Unit 1 Unit 2 Related Comments Twenty normal AC distribution Eighteen normal AC dis- No Although the number and location of panels supply 120/240 VAC to non- tribution panels supply ihe panels are different, they still safety-related loads. 120/240 VAC to nonsafety- serve the same function. The related loads. use of approved procedures and power supply lists minimize any chance of operator error.
Six emergency AC distribution Eight emergency AC dis- Yes Although the number and location of 3 panels supply 120/240 VAC to tribution panels supply the pa ne l s a re d i f fe rent, they still / safety-related loads. 120/240 VAC to safety- serve the same function. The use related loads, of approved procedures and power supply lists minimize any chance of operator error. Unit I has one 120 VAC 3-phase Unit 2 has two 120 VAC No The power supplies are different, uninterruptable power supply 3-phase essential buses howeve r, they Se rve s imi l a r Number 5 which supplies the plant whi,ch supply power for functions and will be operated compute r, the computer equipment in accordance with approved and essential nonsafety- p rocedu re s. This will minimize related equipment. The any chance of operational error. power is supplied by un-interruptable power supplies. No essential bus distribution Ten essential bus dis- No The essential bus panels reflect panels, tribution panels, new equipment installed in Unit 2. These panels will be addressed by approved procedures and power supply lists. This will minimize any chance of operational error. The four vital bus uninterruptable The four vital bus un- Yes The powe r supp l ie s a re d i f fe rent, power supplies a re rated for 105 Interruptable power however, they serve the same function kVA each. surpt ies are rited fer and will be operated in 9ccordance 230 KVA each, with approved procedures. This will minimize any chance of operational e r ro r. T
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0 DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS I AND 2 0 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 38 - 120 VAC Safety Unit 1 Unit 2 Related Comments Unit I has four vital bus dis- Unit 2 has ten vital bus Yes The number and locations of the t ribution panels, distribution panels. distribution panels are different, however, they serve the same function and will be operated in accordance with approved procedures. This will minimize any chance of ope ra t iona l e r ro r. 9 9 9 0 f 9
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L.)\ DUQUESetE LICHT COMPAltY U BEAVER VALLEY PLANT UNITS 1 A880 2 DIFFERE10CE A86ALYSIS SYSTEM / COMPONENT Chanter 39 - 125 VOC Safety Unit 1 Unit 2 Related Comments Five batteries are provided for Six batteries are pro- Yes lhe DC One line electrical diagram the DC distribution system. vided for the DC distri- i s d i f fe rent, however i t wil l se rve bution system, the same function and will be operated in accordance with approved procedures. This will minimize any chance of w ope rat iona l e rro r. -i No batteri,es are dedicated to a Batteries 2-3 and 2-4 are Yes The DC load distribution is different, 3 single load, dedicated for DC backup however, it will serve the same ' , to uninterruptable power function and will be opereted in
. supplies 3 and 4, accordance with approved procedure, respectively. This will minimize any chance of ope ra t iona l e rro r.
Seven DC distribution panels. Sixteen DC distribution Yes The DC load distribution is different, panels, however, it will serve the same function and will be operated in accordance with approved procedures. This will minimize any chance of ope ra t iona l e rro r. O I e T en-
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rl ' () DUQUESIIE LIGHT COMPAllY BEAVER VALLEY PLAllT UIllTS 1 AllD 2 h. DIFFEREllCE ANALYSI$ SYS EM/COMPCMENT Anter as4A - Control Race VentilatlogL,
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- j. Unit 1 Unit 2 Related Comments i System can be run from 0 to System will normally run No The control room ventilation systems I , 1001 reci rcula t ion, wi th 100% rec i rcu la t ion, a re d i f fe rent, however they serve the same function and will tpg operated
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N , This will minialze any chance of j ope ra tiona l e rro r.
! Unit I has a smoke detector In each of the five zones, Unit 2 has only two smoke detectors. Manual action No The smoke detection systems are d i f fe rent, however, they serve the '
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}' The zones are automatically must be taken to stop same function and will be operated bypassed upon sensing smoke the spreading of smoke in accordance with approved procedures. + ( no smoke a la rms in CR). (smoke alares in CR). This will minimize any chance of
, ope ra t iona l e rror.
4 I Air intake and exhaust Air intake and exhaust No The air intake and exhaust deepers dampers have no control dampers have control a re d i f fe rent, however, they serve , switenes, switches.cn Building the same function and will be Service Panel (28SC). operated in accordance with 4 approved procedures. This will minimize any chance of operational error.
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l One hou r a f te r CI B two eme r- One hour af ter CIB only Yes The emergency supply fans are . , gency supply fans start and one train of emergency d i f fe rent, h8 wever, they serve discharge through a common supply air starts. T ra i n , the stee favnetion and will be filter (one must be manually. Includes separate fans, , operated in accordance with
- shutdown). There is nc filters. deepers and , approved procedures. This will t
moisture separator, mo i stu re sepa ra to rs, minimize any chance of operational e rro r,
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The emergency supply fans auto- . matically start. The only operator j action required is verification l
. which will be done by an approved
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. DUQUESNE I.lGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 44A - Control Room Ventilation Safety Unit 1 Unit 2 Related Comments Two series MOVs must re-open Two parallel MOVs open Yes The system / components are different, for supply fans [VS-D-40 for supply fans. (2-HVC- however, they serve the same function C, D]. MOD-204A, 8). and will be operated in accordance with approved procedures. This will minimize any chance of operational e r ro r.
Unit I ha s two re tu rn a i r Un i t 2 ha s no re tu rn a i r No The control room veastlation systems , fans to return air to suction fans. are different with respect to return / of A/C units. a i r fans, howeve r, they se rve t he similar function anj will be operated in accordance with approved procedures. This will minimize any chance of operational error. Unit I has a pressurized air Unit 2 will share Unit Yes the pressurized air bottle system bottled system to provide l's system. i s sha red, it will be maintained by clean air for one hour after Unit I but provides the same function CIB or HI chlorine signal to both Control Rooms. Icapacity being enla rged). t 9 6 9 e 103 ad
. +- P- 4 Q;** &.{r ^ 1 / 'i J %.J DUQUES88E LIGHT COMPAllY BEAVER VALLEY PLANT UtilTS 1 A81D 2 DIFFERENCE ANALYSIS SYSTEM / COMP 000ENT Chanter 44C - Containment Ventilation Safety Unit 1 Unit 2 Related Comments Three 50% capacity CRDM Six 33% capacity control No The CRDM shroud cooling systems are - , shroud cooling fans discharge rod drive mechanism shroud ' different, however, they serve the same into the reactor coolant pump cooling fans discharge to funct.on and will be operated in cubicles. containment steosphere, accordance with approved procedures. This will minimize any chance of ope ra tiona l e rro r. CRDM shroud cooling fans trip CRDM shroud cooling fans Yes The CROM shroud cooling systems are n on a CIB, hl vibrations and trip on a SI signal and different, however, they serve the ' motor electrical trips. and MEPIs. same function and will be ope ra ted in accordance with approved procedures. This will minimize any chance of operational error. The CRDM shroud cooling fans' tripping is an automatic actuation. The only operator action required is verifica-tion which will be done by an approved procedure. , CRDM shroud cooling fans are No control f rom Emergency No The CROM shroud cooling systems are controlled f rom SDP. Shutdown Panel (EOP), d i f fe rent, however, they serve the same function and will be ope ra ted in accordance with approved procedures. , This will minimize any chance of ope ra t iona l e rro r. A If filtration system M on Containment iodine fil- No The lodine filtration systes are fire, a containment ents , tration system has a d i f fe rent, however, they serve the cust be made to extinguish manually operated spray same function and will be operated the fire, system for fire extin- in accordance with approved procedures. 9uishment. This will minimize any chance of operationa l error. 9 4 4 1 084
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. BEAVER. VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYS15 SYSTEM / COMPONENT Chapter 44C - Conta inment . Ventilation -
Safety Unit 1 Unit 2 Related Comments Not installed on Unit 1. Conta inment vacuum break No The containment vacuum break manual valve has in- Instrumentation provided will furthe r dicating lights on BSP. enhance the operator's ability to ( cont ro l/ mon i to r) the system. Approved procedures will minimize any chance of operational error. Alignment for dif ferent One control switch con- No The purge systems are different, purging paths is done with t ro l s the f i l te red a nd however, they serve the same function -j sepa rate control switches. non-fil tered purge path, and will be operated in accordance with approved procedures. This will minimize any chance of operational e rro r. O e 9 e
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s ,, {h DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DirFERENCE ANALYSIS SYSTEM / COMPONENT _Chagier 44D - Auxilla ry Building Ventallation Safety Unit 1 Unit 2 Related Comments Vsntilates only the PAB which Ventilates the PAB, Yes The PAB ventilation systems are contains the waste handling waste handling building dirrerent, however, thy serve the crea, a n.d , during shutdowns, same function and will be operated containment, in accordance with approved procedures. This will minimize any chance or ope ra t iona l e rro r. PAB is exhausted directly to PAB and waste handling Yes The PAB ventilation systems are ' the atmosphere by continuously will be exhausted by the d i rre rent, however, they serve the running exhaust rans unless riItered Supplementa ry same function and will be operated Hi-Hi radiation levels are Collection System prior in acordance with approved procedures, detected. to being discharged to This will mininmize any chance of the atmosphere, operat ional error. Not installed in Ursit 1. An emergency exhaust system. Yes The Unit 2 system is new, however, exists for the charging pump it will be operated in accordance pump cubicles and CCP pump with approved procedures. This will a rea i f the Supplementa ry Leak minimize any chance or operational Collection and Release System e r ro r, becomes inoperable. PAB supply air conditioning Supply air conditioning No instrumentation provided will fu rthe r units are locally centro 11ed, units a re controlled, f rom enhance the operator's ability to . 2BSC in control room. (control / monitor) the system. Approved procedures wi11 minimize
, any chance or operational error.
Individual abnormal con- There is a common ala rm No The operator response to the alarm ditions activate individual which is activated by is the same at either unit regardless a la rms and/or input to the abnormal conditions in or the initiating condition. Alarm computer or SER. the Auxilia ry Building response will be conducted in Ventilation System. fach accordance with approved procedures, a bno rma l cond i t i on i s a computer input. e i
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DUQUESNE I.IGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chagier 44D - Auxille ry Bulldine Ventallation Safety Unit 1 Unit 2 Rclited Comments Syhten has no input on Bypass System feeos into BISI No The BISI system is newly installed in and inoperability status system. Unit 2 This instrumentation v3tl be Indication System (BISI) addressed by approved procedures. This panel, will minimize any chance of operational i e r ro r. Instrumentation provided will furthe r enhance the operator's ability to (control /manitor tne system). App roved j procedures will minimize any chance of - ope ra t iona l e rro r. i 1 i I 4 9 f , i I i 107 l l t .m_ X
t h- ,J O U DUQUESNE L1GHT COMPANY u , BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS-SYSTEM / COMPONENT Chagitr 44F - Miscellaneous Ventilation Safety Unit 1 Unit 2 Related Comments Unit I has a combined emer- Uni t 2 has . separate No The switchgeur ventilation systems ars gency switchgear and battery emergency switchgea r and different, however, they se rve the sabe ' function and will be operated in room ventilation system, battery room ventilation system. accordance with approved procedures. 4 This will minimize any chance or ope ra t iont i e rro r, 4 Each DG room has one exhaust Each DG room has a con- Yes The diesel generator room ventilation ) ran and intake louvers, tinuously running exhaust systems are dirrerent, however, they 4 ran and two supply fans serve the same function and will be which a re cont ro l led f rom operated in accordance with approved 2BSC in control room, p rocedu re s. 1 i e I 9 e 1 i e i 1 i i T 4 4 9 1 108
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('~'J BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 44G - Condensate Polishina Buildina Vent. System Safety Unit 1 Unit 2 Related Comments ' Unit 1 does not have a con- Unit 2 has a condensate No The Unit 2 condensate polishing building densate polishing buildirg, polishing building and ventilation system will be operated in condensate polishing accordance with approved procedures. building ventilation This will minimize any chance of system. ope ra t iona l e r ro r. All of solid waste is located Ai r is exhausted f rom Yes The ventilation systems are different, -s in the waste handling building and is exhausted by auxilia ry tanks and cubicles which a re located in the con-however, they serve the same function and will be operated in accordance (s./) building ventilation. Local densate polishing with approved procedures. This will and control room control, building. Air is passed minimize any chance of operational through either charcoal e r ro r, and HEPA filter banks or - a llEPA and particulate filter bank. Controlled locally. Prima ry lab hoods are located Air is exhausted from Yes The ventilation systems are dif ferent, in the service building and prima ry lab hoods, however, they serve the same function a re exhausted by a rea a i r located in CP buliding, and will be operated in accordance conditioning systems to a to a monitored stack, with approved procedures. This will mon i to red release. High High activity from minimize any chance or operational activi ty f rom [ RM-VS-101 A&B] [2HVC-BQll12) is annun- error. is annunciated in the control clated in the control ' room, room and trips the ex-haust fan.
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b> DUQUESNE LIGHT COMPA"Y BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYS15 SYSTEM / COMPONENT Chapter 45A, B - Loose Parts Monitoring / Seismic Mon i to rine Safety Unit 1 Unit 2 Related Comments Basic function is the sano but instrumentation is made Yes The loose parts monitoring systems by dif ferent manufacturers in each Unit. a re d i f fe rent, however, they serve the same function and will be oper-ated in accordance with approved p rocedu re s. This will minimize any chance of operational error. t ) W O e t 9 e t 110
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s N A DUQUESNE LIGHT COMPA2Y LlQ) BEAVER VALLEY PLANT UNITS 1 AND 2 DlFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 45D - Heat T raci na
. Safety Unit 1 Unit 2 Related Comments Unit 1 heat tracing systems pro- Unit 2 heat tracing protects Yes The heat tracing systems are dir-tect certain safety and nonsafety- certain safety and nonsafety- forent, however, thy serve the related systems. related systems, most of which same function and will be oper-drp common to Unit I and some sted in accordance with approved which a re not common.
p rocedu rs s. This will minimize the chance of operational error. Heat tracing systems are turned Heat tracing systems a re con- Yes The heat tracing control systems on/off strictly by thermostats. trolled by solid-state elec- a re d i f fe rent, however, tney l' tronic controllers which serve the same function and will receive a temperature feed- be operated in accordance with back signal f rom the rmo s ta t s, approved procedures. This will minimize any chance of operationa l error. 5 0 e T i 111 s ,, .A_
( kb !! j i a DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 O)h i DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 45c - Electric Fault Reco rde r 3 Safety d Unit 1 Unit 2 Related Comments s
, Basic function is the same but instrumentation Yes The electrical fault recorders a re
, is made by dirrerent manufacturers for each Unit. d i rFe rent, however, they serve the same function and will be operated
, in accordance with approved proce-f dures. This will minimize any chance or operational e rro r,
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' SYSTEM / COMPONENT Chanter 46-PosL_DR&_H2 Control - H2 Recombiner Subsystem Safety Unit 1 Unit 2 Related Comments Each recombiner suction line Each recombiner suction line Yes The recombiner suction valves used contains two manual valves in contains two SOVs in series are dif ferent, however, they serve series [ItY-101 (102), 103 (104)] [2HCS*SOV114A(8), 115A(8)] the same function of isolation and which are normaly locked shut. wh i ch a re no rma l ly shu t, will be operated in accordance with approved procedures. This will minimize any chance of operational error.
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Neither recombiner suction line Recombiner "A" suction line Yes The recombiner inlet vent and drain contains vent or drain lines, contains two drain lines and l ines a re new, however, they will one vent line. be used in accordance with approved p rocedu re s. This will minimize any chance of operational error. T he re a re no MOVs on e i the r Each recombiner outlet line Yes The recombiner outlet MOVs are new recombiner outlet line. conta ins a MOV [2HCS*MOV120A however, they will bo operated in (B)) before the analyzer accordance with approved procedures, connection. This will minimize any chance of operationa l error. Each recombiner outlet line has Each recombiner outlet line Yes Although the valve arrangements are a manual valve lIlY-114 (111)] has a MOV l2HCS*MOV116 (117)] different, the resulting function * (norma l ly locked shut) used for (normally shut) and a manual (containment isolation) is the containment isolation, va lve ( 2ilCS*110 ( 111 ) ] ( no r- same. The va lve s wi l l be ope r-mally locked open) for cog- ated in accordance with operational tainment isolation. e rro r. The re a re sepa ra te "loca l panel There is a common annunciator Yes The operator response to abnormal trouble" annunciators for the "H2 analyzer /recombiner local cond i t ions /a la rms in the hydrogen recombiner and analyzer subsystems, panel trouble" activated by analyzer and recombiner subsystems a bno rma l conditions in either is the same at either Unit rega rd-subsystem. The computer will less of the initiating condition. identify the subsystem and Alare response will be conducted t ra i n. In accordance with approved p rocedu re s. During containment H2 purge, re- During containment H2 purge, Yes Al though a rrangad differently. plenishment air is supplied replenishment air is supplied the replenishment air flowpaths through either air blast HX inlet through a separate air inlet serve the same function and will ' line, line, be used in accordance with approved procedures. 113
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DUQUES E LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 46-Post DBA H2 Cont rol - H2 Recombiner Subsystem Safety , Unit 1 Unit 2 Related Comments There is no purge and test con- There is a purge and test Yes The purge blower test connection nection en either purge blower connection on one of the i s new, however, it will be used intet line, purge blower inlet lines. In accordance with approved test p rocedu re s. This will minimize any chance of operational error. There is a filter assembly on the The purge blower discha rges Yes Although the purge blower dis-pu rgo b l owe r d i scha rge line to to trua SLCR system, where the charge flowpaths di f fer, the a tmo sphe re. effluent is filtered and resultant effluent is always monitored prior to atmospheric filtered before being released. release. The b lowe r wi l l be used in ac-cordance with approved procedures. The re is no such TS on the purge There is a TS on the purge Yes The TS-purge blower interlock is blower flowpath, blower outlet line which is automatic. The only operator interlocked with purge blower. action requi red is veri fication. This, as well as operation of the blower will be done in accordance with approved procedures. she purge blower is only used to The purge blower can be Yes The additional use of the purge purge containment when H2 is periodically used to purge b lowe r i s new, however, it will , present and the recombiners have containment, be operated in accordance with failed, approved procedures. This will
. minimize any chance of operational e r ro r.
There a re four analyzers with the There are two H2 analyzers Yes Although there is a different ability to monitor containment H2 with the nbility to monitor number of analyzers in each concen t ra t i on. Two of these moni- containment H2 concentration Unit, the same functions (moni-tors, with a range of 0-5%, can and recombiner ef fect iveness tor range, sensing location) di rectly moni tor recombiner of- (inlet and outlet lines), a re pe rfo rmed a s a ne t result. rectiveness (intet and outlet they have a range of 0-10%. The analyzers will be operated lines). The other two analyzers Sepa ra te lines are used to in accordance with approved have a range of 0-10%, same containment, each having p rocedu re s. This will minimize two series SOVs for contain- any chance of operational error, ment isolation l2HCS*SOV133A, , 0; 134A, B; 135A, B; 136A, B] . 9
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A ,$lr} ' L..) ( i DUQUESN LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Chapter 46-Post DBA H2 Control - H2 Recombiner Subsystem Safety Unit 1 Unit 2 Related Comments The H2 analyzers are thermal The H2 analyzers a re elect ro- Al though the H2 ana lyzers a re of conductivity type. The wide- chemical type a re manufactured a different type and made by manu-range ana lyzers a re manufac- by exo-sensor. factures, they perform the same tured by Bendix; the na rrow- function. They will be operated rango analyzers are made by in accordance with approved pro-Teledyne. cedures. This will minimize any chance of operational error.
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The na rrow-range H2 ana lyzers a re One H2 analyzer is located Yes Al though the H2 ana lyzers a re located in the recombiner room; in each recombiner cubicle, d i f fe rent, they still se rve the the wide-range H2 analyzers are same function. The use of ap-located in the east and west cable proved procedures, valve lists vaults, and power supply lists minimize any chance of operational error. No such thermostatically controlled Each analyzer cabinet has a Yes The analyzer cabinet heaters heater is installed to maintain thermostatically controlled a re new, howeve r, they wi l l the electrical terminals dry, heater to prevent condensa- be used in accordance with tion f rom forming on the approved procedures. This ele'trical c te rmi na l s. will minimize any chance of operational error. The H2 analyzers can not be The H2 analyzers can be Yes Although the H2 analyzer control operated f rom the control room. ope ra ted ("ON-OFF") from the location is new, the analyzers control room, perform the same function and will be operated in accordance with approved procedures. < The NR analyzer control panels are in the recombiner room, the The H2 analyzer control panels Yes Although the H2 analyzer control panels locations a re different, a re located on the outside wall WR a na l yze r con t ro l panel s a re of the associated recombine r/ they still serve the same func-in the process area, ana lyzer cubicles, tion. The use of approved pro-cedures, valves lists and power supply lists minimizes any chance of operational e r ro r. e r 115 4
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A q[' - DUQUES LIGHT COMPANY J[f)> - BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM /CDMPONENT Control Room Safety Unit 1 Unit 2 Related Comments The number of annunciators in Unit Yes The operator response to the ala re 2 have been reduced in comparison is the same at either Unit rega rd less to Unit 1. Many annunciators in or the Initiating condition. Alarm Uni t 2 a re common t rouble a la rms response will be conducted in accor-raquiring the need of the computer dance with approved procedures, to determine the actual input activating the a la rm, inoperability status or some sys- Inoperability status is indi- Ye's The operator response to the alarm L) tems a re indicated by pushbutton cated by the bypass and i nope r- i s the same a t e i the r Uni t rega rd-status lights on Vertical Board able status indication system. less of the Initiating condition. A. These lights are manually The system is automatically or Alare response will be conducted initiated, manually initiated. A computer in accordance with approved point provides an output alarm, p rocedu re s. CRT and lights a backilt push-button status lights for affec-ted system on Bonchboard A. O a f 9 8 9. 6 e 5 117 . I v* .R _ _ . _
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t M*] d b DUQUESNE LIGHT COMPANY b BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS NOTE: The followings panels use key phrases in the comment column. The Justiri-cations or the differences which the key phrases represent are as follows: KEY PHRASE JUST!FICATION Same Function The systems components are dirrerent, however, they serve the same function and will be operated in accordance 'wi th approved procedures. This will minimize any chance or operational error. Additional Control / indications provided will further enhance the operator's ability to (control / monitor) the system. Approved procedures ; will minimize any chance or operational error. Redundancy These controls / indications are identical except one Unit has redundant controls / indications which will further enhance the operator's ability to (control / monitor) the system. App roved ' procedures will minimize any chance of operational error. Design Change Controls / indications provided reflect new (system arrangement / components) installed in one Unit. This instrumentation will be addressed by approved procedures. This will minimize any chance of operstlunal e r ro r. Relocated Controls / indications have been relocated on a dirrerent panel. - The instrumentation and its location will be addressed by , approved procedures. This will minimize any chance or operationa l error. e e
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% j t DUQUES!E LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Control Room Status Panel Safety Unit 1 Unit 2 Related Comments Various control and permissive conditions have been removed f rom the status panels and relocated on a common annunciator ( A-12). '
The following table lists the Unit 1 status panel, and the status window, and the Unit 2 annunciator A12 window. PNL 62 Annunciator A-12 Annunciator A12 is located on vertical _) board section C5 next to status CRT
- 1. Saroty injection actuation ID . S2 signal.
- 2. Auto safety injection ulocked. IC PNL 176
- 3. Pzr. Si blocked ' 1A
- 4. Not P-7 1H
- 5. P-10 1G
- 6. Not P-8 2G
- 7. Intermediate range reactor trip 2B
- blocked
- 8. P-6 3B '
- 9. Sourco range reactor trip 2A blocked ,
- 10. Power range low setpoint reacto r 2C trip blocked
- 11. Not P-9 3G
- 12. C5 pe rm i s s ive 3C PNL 623
- 13. Steam line isolation safety IB
- injection blocked 119
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I DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEN/ COMPONENT Control Room Status Panel Safety Unit 1 Unit 2._ Related Comments fnk._622 lit . 2/3 Lo-Lo Tavg 3r
- 15. Steam dump defeat i n te rlocit 40
- 16. Load rejection 15-50% 4A -
- 17. Condenser available 4C
- 18. Load rejection greater than 50% 4B
- 19. a. Impul se Pressure P-13 If (P-13)
- b. Impulse Pressure Below P-13 2il (not P-13)
- 20. 2/3 overtemperature de t te-T Redundant status light indica-runback tion for turbine rutiback oper-ation on E-H control panel.
- 21. 2/3 overpower delta-T ruliback O
e s 120
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DUQUESNE' LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 . DIFFERENCE ANALYSIS
- SYSTEM / COMPONENT Control Room Status Panel Safety Unit 1 Unit 2 Related Comments The Unit I and Unit 2 status Design change.
panels a re a rranged di f ferently due to the elimination of redund- Relocation.
- dant status indications or the sddition of new status indications reflecting design differences between the two plants.
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'R i?l's DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNIIS 1 AND 2 DIFFERENCE ANALYSIS SYST EM/ COMPONENT Benchboa rd Section A Safety Mpit 1 Unit 2 Re la ted Comments Three controls for Si accumulator Six controls for Si accum- Yes Design change, vent valves [ SIS-MOV-853A B and t ulator va lves [2GWS*SOV-853A C) located on Benchboard A. through F ] located on Bench-boa rd A.
Six controls for Si accumulator Six controls for Si accum- Yes Relocated, test va lves ( SIS-MOV-850A through ulator test valves F) [2 SIS *MOV-850A through F] greater than 4 inches or its . )'
-s, Unit I location.
Not installed in Unit 1. Unit 2 has two steamline iso- Yes Design change. lation signal reset pushbuttons located on Be .chboa rd A. Additional Manual transfer to reci rculation Manual transfer to recircula- Yes Design change, phase in Unit 1 is accomplished tion phase and reset is accom-by two pushbuttons per train; plished by a selector switch reset by one pushbutton per train per train located on Benchboard located on Benchboa rd A. A. 0 9 f e e 122
( f f U V V
, DUQUESNE LICHT COMPANY BEAVER VALLEY FLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEH/ COMPONENT Benchboa rd Section A1 Safety ,
Unit 2 Related Comments Malt 1 Not installed in Unit 1. Sampling containment Yes Design change, isolation valves installed on Benchboa rd A1: Containment gas sample [2 PAS *SOV-105A1, A2l Residual Heat Removal Sample [2SSR*SOV-129Al, A2] RCS Hot Leg Sample J [2SSR*SOV-128A1, A2] - PRT & Prima ry Dra ins Trans-for Tank #1 Sample [2SSR*SOV-130A1, A2] Cont rols located on Benchboard Cont ro l s a re located on Yes Design change. A for containment isolation: Benchboa rd Al for con-tainment header isolation: RCP CCR inlet isolation 2CCP"MOV-151-1, 151-2' 2CCP*MOV-150-1, 150-2 ITV-1CC-103A,B,C) TV-1CC-103A1,81,C1] 2CCP'MOV-156-1, 156-2
- 2CC P* MOV- 157- 1, 157-2 RCP A CCR outlet isolation
[TV-1CC-107E1,E2] lTV-1CC-105E1,E21
- RCP B, C OCR outlet isolation
' ITV-1CC-107DI,D2] TV-1CC-105DI D2) CRDM shroud cooling coi l s lTV-1CC-11101,D2] ,
- [1V-ICC-111A1.A2l j RHR heat exchangers inlet & outlet i
[MOV-1CC-112A2.A3) .! lHOV-1CC-11282,031 i 1 l 9 4 e 4 1 l l . 123 n
gs l . h hU e e e e e e g g g g g n n n n n l a a . a a a A h h d h h h s c c et c c c n t n n o n n n a n g g i e ig ig c g 2 t m o i i s i s c m s s l s D e o e e e e e e N S C D D R D D D A d 1 r Y S a d NSI o ye ATS b tt PIY h ea s s s MNL c fl s s OUA n ae e e e e e C N e SR Y Y Y Y Y TA B TN HAE ,t- e e CLC T , IPN E N E 1 nl g eorr. e 2tl g norr ,no fVL YR N 4moaisss 4eoais EEE O 5nchajie 5mchald NLF P . - 1i c lhh 1 n c ie SLF M 1 - Vh aestotT i estot 4 EAI O A r h tnOc ,thinc n ,ahinca 2 UVD C Q / n d o fd c n nrSn eu*e 1 ntde o mgo.or 2ttde n mgo c 1 UR M i r nt e mtSB 3crdnnftd 3ordnnl DE E a 222a sannB ineV 5 onii ne 5conii V m ABCo eo rCn 1 efaal set 1 loBmin e faal e. T A S b a 2o ,d tol ma tor E Y r: , , ,h r nto tS[ isynooec ,dsynoa1 B S on111 c foA8Cn t ,i c nAaud nS d oAte 1 sel tvpc ocrgo. tnl 2iel oc A svpc s i111 e o1tse CPnt 2ul p nna 1 2nl p nld st111B c5n t ea 5oaueooreA 5iaueoor l a111 1 opa rdmc 1 vshicrr 1 vshira ol roVVVo ts000 n saV cmc. uo h O l pl 1 onno. fail a 1 e Vrnr ae Oaoefl rwsa tt aad r Vrnr anb e Oaoefl oh ttto niAAAd SB A l rtsA M itouael o M itoucc o ***e 2* ,m s ooni -)ta c nob -)ta c n 2 cnSSSt S ued rto d S1 awsre rh S2awsree iDDDa tVAuvr tic)r Wl eirstc Wl S5ognce eisB t xaSSSc iC2cl a nn 2a S5ognceinn
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'b 0 DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 d
DIFFERENCE ANALYSIS SYST EM/COMPONEN T Benchboa rd Section A1 Safety Unit 1 . Unit 2 Related Comments Two common control switches controls for containment Yes Design change. [ SOV-SS-000A ] and [ SOV-SS- isolation valves for: 000B] for containment sample Accumulator sample isolation trains are located [2SSR*A0V-109A1, A2] on Benchboard A. Steam 9w.3rator 7 blowdown Specifically: sample [2SSR*A0V-117A, Pressurizer liquid space B, C] (common switch) [TV-SS-100A1, A2] Pressurizer liquid and . RHS outlet sample vapor sample ( 2SSR,*A0V- .. l [ TV-SS-103A1, A2 ] 100A1, 112A1] (common RHS inlet sample switch) [TV-ISS-104A1, A2l [2SSR*A0V-100A2, 112A2] Accumulator sample (common switch) [TV-ISS-109A1, A2] RCS cold leg sample Pressurizer relief tank 12SSR*A0V-102All _ _ _ _ sample [2SSR*AOV-102A2] [TV-ISS-111A1, A2] Pressurizer vapor sample (TV-1SS-112A1, A2] Steam generator blowdown sample [TV-SS-117A, B, C] t Two common switches for each train of the following con-tainment i so l a t ion a re con- , trolled f rom Benchboard A. RCS cold leg and hot leg samples lSOV-SS-102A1, A2l . [ SOV-SS-105 A1, A2 ] 4 h i 4 12 *) l ,
. - A
- . - . ~_. . . . -.. - r' : sty , Y Y$ 4 / J DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboa rd Sections A1 and A2 Safety Unit 1 Unit 2 Related Comments Controls for Si accumulator Controls for Si accum- Yes Relocated, located on Benchboa rd A. ulator are relocated on Benchboard A2 (see Dra in va lves drawing also showing [MOV-SI-852A, B, C] section A2-AJ) greater Fill valves than 4-inches of its , lHOV-St-851A, B, C]
- Unit I location.
Di scha rge va lves lMOV-SI-865A, B, Cl Drain valve s [2 SIS *MOV-852A, B, Cl ~/ fill valve l2 SIS *MOV-851A, B, C) Di scha rge va lves [2 SIS *MOV-865A, B, Cl One control swi tch fo r [ MOV- In Unit 2, the cross Yes Same function. RW-104], reci rculation spray connect i s . a manua l heat exchanger cross con- valve. nection Benchboa rd A. > Four control s for [ MOV-RW- Two control switches for Yes Same function. 102A1, A2, & B1, B2), [2SWS-MOV-102A, Bl service reactor plant pump discharge wa ter pumps A, B dis- Design change, header valves, located on charge valves located on Benchboa rd A. Benchboa rd Al-A2.
- Three cont rols on Benchboa rd Three cont rol s for [25WS ' No Design change.
B fo r [ TV-CC-110A, B, C l. AOV-110A, B, Cl service , These are for reactor plant water individual supply ' river water to the contain- isolation valves for the ment air recirculation conta inment ai r reci rcula-cooling coils, tion cooling coils. Con-trols located on Bench-boa rd A1 and A2. i Not installed in Unit 1 Four controls for (2SWS- No Design change. MOV-107A through D] se rvice water supply isolation to the CCS and chilled water system. ' Cont ro l s a re located on Benchboa rd Al and A2. d 126 e a
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f ,h ps) J a U [G Y DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboa rd Sections A1 and A2 Safety Unit 1 Unit 2 Related Comments Unit I has two sets of con- Unit I has four sets of Yes Design change. trols for suction and dis- controls for suction and charge on outside reci rcula- discharge on outside re-tion spray va lves. circulation spray valves (MOV-RS-155A, Bl 2RSS*MOV-155A thru D), [MOV-RS-156A, B) 2RSS*MOV-156A thru D], located on Benchboard ( see drawing showing A2-A3). ' Not installed in Unit 1. Control s for chemica l Yes Design change. Injection pump inlet [2QSS*MOV-102A, B] located on Benchboa rd A2. (see drawing showing A2- A3 ). Controls for cutback valves Not installed in Unit 2. Yes Design change, on Unit 1 installed on Bench-boa rd A [QS-MOV-103A, B]. Control for neutron shield Control for neutron Yes Relocated. tank makeup l TV-NS-101 ] shield tank makeup [2NSS* located on Benchboard A. AOV-101] located on
- Benchboa rd A2 greater than 4 inches f rom its Unit I location.
- four control switches for Two control switches for Yes Design change, chemical injection pumps chemical injection pumps located on Benchboard A. located on Benchboard Al & A2.
[QS-P-4A, B, C, D] Unit I has (2QSS*P24A, B] Unit 2 OT2 switches, controls are handle controls. Not installed in Unit 1. A control for chemical Yes Design change, injection pump discha rge to containment sump * {2QSS*SOV-100A] on Bench- a boa rd A2. e 127
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DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboard Sections A1 and A2 Safety Unit 1 Unit 2 Related Comments [ MOV-104 A a nd B ] chem ica l in- Chemical injection pump Yes Design change, jection pump discharge pump discharge to quench va lves cont ro l s a re located on spr&y suction valves Benchboa rd A (one MOV per ( two SOVs per pump) con-pump), trols on Benchboard A2
.[24SS*SOV-101A, B and 2A, B) ( see Benchboa rd d raw i ng A2- A3 ) .
)
Unit I has controls for LHS1 Unit 2 has controls for Yes Design change. pump valves located on Bench- LHS1 pump valves located boa rd A. Reci rculation va lves on Benchboard A2 (see for LHSI pumps ( MOV-SI-885A, drawing showing Bench-B, C, D). LHSI pump d i scha rge boa rd A2-A3 a l so) . Re-to cold legs [MOV-St-864A,B]. ci rculation va lves for LHSt pumps { 2 SIS *MOV-8890A, B) LHS1 discharge to hot leg [2 SIS *MOV-864A, B]. Unit 1 ha s two cont ro l s fo r Unit 2 has no such Yes Design change. LHSI pump suction from con- valves. tainment sump located on Benchboa rd A. [MOV-SI-860A,
- B]. ;_
Unit I has one control fo r Unit 2 has two such Yes Design change. LHSI pump discharge to cold valves on Benchboard A2. .y leg l MOV-S t-890C] on Bench- [2 SIS *MOV-8888A, B1 (see boa rd A. drawing showing Bench- . boa rd A2-A3 ) . Not installed in Unit 1. Cont ro l s fo r rec i rcu l- Yes Design change. ation spray pumps C and D supply to LHS1 pump d i scha rge line valves, [2 SIS *MOV-8811A, B] are on Benchboa rd , A2. (see ' drawing showing Bench- ' boa rd A2-A3 ). e 128 4
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DUQUESN IGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM /CCHPONENT Benchboa rd Sections A1 and A2 Safety Unit 1 Unit 2 Related Comments four controls for [ TV-RW- Two con t ro l s fo r [ 2SWS- Yes Design change. 103A through D] for reactor MOV-103A, B) service plant river water supply to water supply isolation the reci rculation heat ex- to the recirculation ' changers. The controls are spray head exchangers. located on Benchboa rd A. The controls are located on Benchboa rd Al-A2. Four control swi tches for Two control switches for Yes Design change. / [MOV-RW-106A, B, 114A, B) re- [2SWS-MOV-106A, B] service actor plant river water plant water supply isolation river water supply isolation to CCP heat exchangers, to CCR heat exchangers are 10- a re located on Benchboard cated on Benchboa rd A. Al-A2. Not installed in Unit 1. Indicating l ights pro- Yes Design change, vided for [2SWE-SOV-100A, B] seal water supply SOV isolation valves for the standby service water purps on Benchboard Al-A2 Not installed in Unit 1. Four controls provided Yes Design change, for [ 2SWS*AOV-118A, B, C), service water seal water isolation from Unit I ri t ter water on Bench-board Al-A2. Not installed in Unit 1. Indicating I lghts p ro- Yes Design change, vided for [ 2tWS*MOV- , 170A, B] seal water isolations from the seal water to strainer of the C service water pump on Benchboa rd Al-A2, 4 9 e b I 129
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E V DUQUESN LIGHT COMPANY V BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboard Sections Al_ and A2 Safety Unit 1 - Unit 2 Related Comments [MOV-RW-113 A thru D], enorgency [2SWS-MOV-113A thru D) supply Yes Relocated, supply to diesel gene ra to rs to diesel generators cooling cooling system are controlled at system. These valves are , , their respective diesel local con.t ro l l ed on Benchboa rd id , * ' control panel, and A2 " _ 4;' [MOV-RW-116, 117] are re- [25WS*MOV-162, 163, 164, Yes _ Design change. actor plant river water 165) are chilled water N~- I supply isolation to contain- supply and discharge iso- "s , L'- ment a i r reci rculation lations to the contain-coraling coils and containment ment air recirculation ai r compressors. The con- cooling coils. [2SWS*HOV-trols a re on Benchboa rd A. 160, 161, 166, 167 ] a re service water for the above. Two control switches will operate these valves f rom Benchboard A1 and A2.
' 'Not instalted in Unit *
. Indicating lights provided Yes Design change.
for [2SWS*MOV-120A, B] on Benchboard Al-A2 for service water (12 inch header) isola-tion valves (control room a i r conditioning diesel gene ra to rs, charging pumps). Not installed in Unit 1. Control switch provided for No Design change. chilled water return isolation for conta inment a i r reci rc. cooling coils l25WS'SOV114). e T i 9 e 130
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U . DUQUESNE IGHT COMPANY (~) BEAVER VALLEY PLANT UNITS 1 AND 2 DIFr[RENCE ANALYSIS SYSTEM / COMPONENT Benchboa rd Sections A2 and A3 Safety Unit 1 Unit 2 Related Comments Centrols for each residual heat Controls for each residual Yes Design change, remova l pump [ RH-P-1 A, B] and heat removal pump [2RHS-P-isolation valves [MOV-RH-700 21A, Bl. Isolation valves Relocatod. 701*, 720A and B], and temper- l2RHS*MOV-720A,8l, [2RHS* sture controller [ HIC-RH-758], , [2RHS*MOV-and flow control valve lAM-RH- MOV-701A,B)2RHS*MOV-750A, 702A, 8), [ 605] located on Benchboa rd A. B), temperature controller [2RHS*HCV-758A,B] flow cont rol le r l 2RHS*FCV605A, B) 8 and RHR pump test [2RHS* P21A,B test] relocated less than 4-inches or its Unit I location on Bench-boa rd A2/A3.
. NOTE: There are two controls for each of the following: [2RHS-MOV-702A, 7018)
Indications for RHR flow [ F1-RH- riow and amps indications Yes Relocated. 605) and RHR pump amps are located have been relocated to . On Benchboard A. Vertica l Boa rd A. Not installed in Unit 1. Control for discharge or Yes Sa me function. ' the surge tank [2CWS*MOV-103A] is located on Bench-
- Design change.
boa rd A2. Additional. h e 9 9 131 b.
/
,4y DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYGIS SYSTEM /CDMPONENT Benchboa rd Sections A2 and A1 Safety Unit 1 Unit 2 Related Cgaments Not installed in Unit 1. Controls for the following No Same function, a re located on Benchboard A3 Design change.
Cas waste surge tank Additional, inlet header isolation valve l2GW3*AOV-104) Gas waste storage tank ; outlet isolation valve / l2CWS*A0V '05] Gas waste storage tank header isolation valve [2CWS*AOV-108] I Not installed in Unit 1. A control switch for chemical Yes Design change. Injectiod pump dischargo to containment sump [2QSS*50V-1008] is located on Benchboa rd A2. Control switches for A control for LHSt pumps to Yes Same function. LHSI pumps to RCS hot RCS hot leg (2 SIS *MOV-8889) ' leg (MOV-SI-890A, B] is located on BencMboard A2. located on Benchboard A. Not installed in Unit 1. A control for HHSI to cold Yes Design change. leg isolation [2 SIS *MOV-841] is located on benchboa rd A2. Controls for reactor Controls for reactor contain- Yes Relocated, containment sump pumps ment sump pumps a re relocateJ a re located on Bench- greater than 4-Inchos on boa rd A. Benchboa rd A2. 9 4 e 132 I
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DUQUESNE LIGHT COMPANY , BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboa rd Sect ions A2 and A3 Safety Unit 1 Un Lt 2 Related Comments Not' installed in Unit 1. Waste recirculation bypass No Design change. va lves [ LWS-MOV-103A, B] and liquid waste drain tank pumps d i scha rge va lves [ LWS-MOV-104A, B] are controlled on Benchboard A3. No : Control for incoro in- Cont ro l for incore instrument Relocated. -' strument room sump pump room sump pump is relocated is located on Bench- greater than 4-inches on boa rd A. Benchboard A2. 9 0 1 9 9 s 9 e 133 f#
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q) DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2
. DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboard Section A4 Safety Unit 1 Unit 2 Related Comments Control for HHSI to hot leg (BIT Control for HHS1 to hot leg , Yes Re l oc'a ted ,
bypass) [MOV-SI-869Al and Bli inlet 12 SIS *MOV-869A) and BI T inlet [MOV-SI-867A) is located on l2 SIS *MOV-867Al Is located Benchboa rd A. greater than 4 inches of its Unit I location on Benchboa rd A4. Not installed in Unit 1. Control for HHS1 to cold le Yes Design change, f - isolation valve {2 SIS *SOV-8 0l is located on Benchboard A4. d' Not installed in Unit 1. Con t ro l s fo r p ri ma ry d ra i ns ' No Design change. tanks #1 vent. valve [2DGS-AOV-100A] and #2 vent valve [2DGS- Additional. AOV-100Bl a re located on Benchboard A4. Not installed in Unit 1. Controls for letdown and No Design change. alternate letdown isolation I?CHS*MOV-100A, B ] a re t o-cated on Benchboa rd A4. i ! Not installed in Unit 1. Eight controls for charging Yes Design change. pump suction and discha rge ' isolations i 2CHS*MOV-8130A, B
- 2CHS*MOV-8131A, B l
y 2CHS*MOV-8132A, B l 2CHS*MOV-8133A, B j s;e located on Benchboard A4. 1 j Not installed in Unit 1. Controls for alternate charging Yes Design change. pump mini-flow [2CHS*MOV-380A, B) , j [2CHS*MOV-383A, BI -
- a re located on Benchboa rd A4.
i Not installed in Unit 1. Control for alternate emergency Yes Design change. boration isolation. [2CHS*SOV-206). ' ' ' a re located on Benchboard A4. ~
- i.
i 135 l
.- A
y . . . _ .. .. _ 3 . _ _ _ _ .. , , t DUQUES LIGHT COMPANY (:L"*.) BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboa rd Sect ion A/Ve rt ica l Boa rd A Safety Unit 1 Unit 2 Related Commente Unit I has degasiriers, evapor- Unit 2 has only d'egasifier No Oesign change. ators, and primary grade water sub- control and instrumentation systems with control indication on Benchboard A and Vertical on Benchboa rd A. Vertica l Board A, Boa rd A. Benchboard B and Vertical Board 8. Not installed in Unit 1. Unit 2 has c local gaseous Reldcated, waste storage tank panel to control var 8.ous storage tank valves and for various gaseous
) '
waste indications. Not installed in Unit 1. Indicating lights for each Yes Additional, steam generator support oil reservoi rs low level a re on Vertical Board A1. T 5 4 136
- A _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _
. . . - . . ~ . _ - . . _ . - _. . .. ._ . . . - . . - . ..- .-- . . . .. ~ . , . . . . ~ . . . ~ . .
e i 1 DUQUESNE LIGHT COMPANY j BEAVER VALLEY PLANT UNITS 1 AND 2 4 DIFFERENCE ANALYSIS I SYSTEM / COMPONENT Vertical Boa rd Section A. B i Safety Unit 1 Unit 2 Related Comments j Power supply transfer switches Transfer is automatic. No Yes Design change. i for PASS system located on switches installed in Vertica l. Boa rd A. systems in Unit 2, l 4 4 i ? 4 I I 1 i O r 4 , b - I, - 1 e 1 l I 137 l 1 1 m
{, \ f 1 d v DUQUESNE LICHT COMPANY V BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Vertical Boa rd Section A5
- Safety Unit 1 Unit 2 Related Comments The re is one Reactor Containment There are five Reactor Con- - Ye s " Redundancy.
Dew Point Ind ica tor l MI-LM-100-1 ], tainment Moisture Indicators, i insta lled on Vertica l Boa rd A; [2LMS-Mi-100-1, 2, 3, 4, 5 ], left end. Installed less than 4 inches from its Unit I location.
- There are two containment tempe r- There are six reactor contain- Yes Redundance, a tu re ind ica tors, [ T I-LM-100-1, ment temperature indicators, \ s; 100-2]. Installed on Vertical Boa rd A; left end.
12LMS-T1100-1 -2, -7, ~13, -14,
-15), installed in the same a rea.
i ! Not installed in Unit 1. The re i s a 1-pen recorder fcr Yes Additional. prima ry dominera lizer water ! storage tank level (2FWE-LR104A1]. I ~ Not installed in Unit 1. A 1-pen containment sump temp- Yes Additional. erature recorder. [2RSS-TR150), indicates on Vertical Board AS. 1 1 I Two digital indications for air A containment absolute pres- Yes Redundancy. partial pressure l PI-CV-101 A1, sure digital readout installed
- B1 ], on Vertica l Boa rd A. on Vertical Board AS.
[2CVS-P1101) ! Not installed on Unit 1. A digital readout installed on Yes Additional. ! Vertica l Board A5 for conta la-ment average temperature '
- (2CvS-TI-10il.
. Not installed on Unit 1. A 1-pen recorder installed on Yes Additional.
( Vertical Board A5 for chemical
- addition tank level.
4 [2QSS-LR-101). I 4 9 l 138 t
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- (dT DUQUESNE LIGHT COMPANY
- BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _Vertica l Boa rd Section AS Safety Unit 1 Unit 2 Related Comments indications for wide-range hydro- indications provided for Hydro- Yes Design change, gen analysis provided on Vertical gen analyzers provided on Boa rd A. Vertical Boa rd AS, [2HCS*H1-100A, B] and [2HCS*HR-100] ten H21-HY101A, B] amber indicating lights.
H2R-HY-101] Not installed in Unit 1. Indications for Recirculation Yes Additional. , Spray Pump flow provided on / Vertical AS. [2RSS*F1-157A, B, C, D) [2RSS-FR-157A, B) Four indications for containment Four indications for con- Yes Relocated, p re ssu re located on Vertical ta inment pressure less than Bea rd A. [, P I- LM- 100A, B, C, D]. 4 inches from their Unit 1 location. [2LMS*PI-950, 951, 952, 953) Key-lock swi tches for conta inment Cont ro l s fo r Hyd rogen Ana lyz- Yes Design change. isolation for wide-range analyzers nrs System are located on provided for Vertical Boa rd A. Vertical Boa rd AS. SOV-HY-102A1, A2, B1, B2' l2HCS*HA-100A, B] start switches , SOV-HY-103A1, A2, B1, B2 [2HCS*SOV-136A, B) common 50V-HY-104A1, A2, B1, B2 switches [2HCS*SOV-135A, B] commotg switches [2HCS*SOV-134A, 133A] common switches [ 2itCS* SOV- 13 3 B, 134Al common switches , Not installed in Unit 1. Indications for containment Yes Additional. sump level and pump flow on Vertica l Boa rd AS. 2DAS-tR-220 2DAS-FR-100 e 139
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h J DUQUESNE LIGHT COMPANY-U} t BEAVER VALLEY PLANT UNITS 1 AND 2 4 DIFFERENCE ANALYSIS LYST[M/ COMPONENT Vertical Bea rd Section A5 Safety 1 Unit 1 Unit 2 Related Comments j Two indications and a recorder A wide-range conta inment pres- Yes Redundancy.
- for wide-range containment sure recorder located on j pressure located on Vertical Ve rt ica l Boa rd A5.
i Boa rd A. [2LMS-PR-106), (PR-LM-101]
- (PI-LM-101A. B) .
l ! The Steam Generator Blowdown Systems No Design change. )
- a re ve ry di f ferent between Unit 1 i and Unit 2. The Unit 2 system has l
different functions and the I n s t ru-mentation is very different in the
- Control Room.
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DUQUESNE L1GHT COllPANY U BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Ve rt ica l Boa rd Sect ion A6 Safety Unit 1 Unit 2 Related Comments Rzactor conta inment sump temper- Reactor Containment sump temp- Yes Relocated, ature and level indications a re e ra tu re a nd level indications installed on Vertical Board A. are relocated greater than 4 [TI-RS-150A, B] inches from the Unit I loca- [Li-RS-151A, Bl tion on Vertica l Boa rd A6. B 12RSS*L1-151A, 2RSS*TI-150A, B LHSI pump discharge flow indic- LHSI pump discharge flow in- 'e s Relocated. -
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ations a re installed on Vertical dications are relocatsd on Boa rd A. {F1-SI-945, 946]. Vertical Boa rd A6 g rea te r than 4 inches from Unit I location. [2 SIS-F1-945, 946) Not installed on Unit 1. Hot Leg level reco rde r, Yes Additional, and indicator 12RCS-LR-102), 2RCS-Li-102), installed on Vertical Boa rd A6. A pressure indicator for each A pressure Indicator for each No Relocated. atmospheric steam dump is in- atmospheric steam dusp i s re-stalled on Benchboa rd A. located on Vertical Boa rd A6. [ P I-MS-101 A, B, C) [2 MSS-PI-101A, B, C) , Cu rrent indicasors for each 109 Current indicators for each Yes Relocated. head safety injection pump, re- low head safety injection ' sidual heat removal pump, quench pumps, residual heat removal spray pump, reci rc spray pump, pump, quench spray pump, Reactor plant river water pumps recirc spray pumps and ser- _) and auxiliary river water pumps vice wa te r pumps a re located installed on Benchboard A. on Vertical Boa rd A6. One temperature recorder for One temperature recorder per Yes Design change. Residual Heat Removal Exchanger train for the Residual Heat inlet and outlet located on Removal Heat Exchanger insta l-Vertical Board A. [TR-RH-604] led on Vertical Boa rd A6. [2RHS-lR-604A, Bl 9 e 141 _n
DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Vertica l Boa rd Section A6 Safety Unit 1 Unit 2 Relatgd CommRDLS Not installed in Unit 1. Indications for each train are Yes Additional, provided on Vertical Boa rd A6 for RHS bypass flow, [RHS-F1- Design change. 60$A, B], RHS heat exchanger outlet tempe ra ture [ 2CCP-T I-110A, B), pump di scha rge pres-su re, [2RHS-PI-602A, Bl. In-dications are also to be pro-vided for RHS pump flow (2 - ' J indications per train), RHS pump suction pressure, RHS pump discharge pressure and a second current i nd ica to r. Conta inment a i r reci rc cooling Containment air recirc cooling No Relocated. water discharge flow and temp- water discharge flow and temp-erature for each of the three erature for each of the three t ra i ns a re located on Vertical trains are relocated on Vertical Boa rd C. [FI-CC-132, A, B, 0] Boa rd A6. [2SWS-FI-132A, B, C] - [TI-CC-132A, B, C) [2SWS-TI-132A, B, C] Unit 1 has CCR river water supply Unit 2 has service water supply No Design change, header presure indication on header pressure indication Vertical Boa rd A. [ PI-RS-113 A, B] [2SWS-PI-113A, B]. Additional . Unit 2 has standby service water No standby indication, pressure l2SWE-PI-114]. . Unit I has two recirc spray supply Unit 2 has local flow indica- Yes Additional header flow indications and one tion on the outlet of each common outlet flow indication on recirc spray heat exchanger. Vertical Boa rd A. [F1-RW-102A, B, 103) Pressure indica tor [ PI-RC-104) for Temperature indicator [2RCS- Yes Design change. reactor coolant gas vent system TI-4001 for reactor head vent located on Vertical Boa rd C. system located on Vertical Board Section 86. , I 4 142
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., s ,< g c w, DUQUESME L1GHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT VertIca i Boa rd SectIon A7 Safety Unit 1 Unit 2 Related Comuments Coolant recove rt f i l te r d i f fe ren- Coolant recove ry fi l te r d i f- No Relocated tial pressure, [PD1-BR-105), forential pressure on Vertical located on Vertical Board A. Boa rd A T i s g rea te r than is inches of location on Unit 1.
{2BRS-DI-105). h a 9 9 9 e 0 e 18i 3 e
f$ . f. O U DUQUESNE LICHT COMPANY O) BEAVER VALLEY PLANT UNITS 1 AND 2 DIFITRENCE ANALYSIS SYSTEM / COMPONENT Vertical Boa rd Sect ion As Sa fe ty Ualt 1 Unit 2 Related Comments Vo l ume Cont ro l Tank Pressure [ PI- Vo l ume Cont ro l Tank Pressure No Relocated FW-111] is located on Vertical [2CHS-PI-116] is located on Board A in the Caseous Waste Vertical Board A8. Also, section (2CHS-PI-117), t Nat installed in Unit 1 A 2-pen recorder used for Yes Additional.
- Boric Acid Tank Level in loca-ted on Vertica l Boa rd A8. i
[2CHS-LR-106] 1 Baron injection lleader pressure Boron injection Header pres- Yes Relocated. 1 lPI-St-934) and HHSI ricw to RCS sure [2 SIS *PI-934) and HHSI [ f t -SI-9431 and [ FI-St-934) on flow to RCS [2 SIS *PI-943] Vertical Boa rd A. and [2 SIS *FI-940) on Vertical Board greater than 4 inches of its Unit I location. Three Hot Leg flow indicator and Six Hot Leg Flow gauges and Yes Redundancy, three Cold Leg Flow indicaters six cold flow gauges are local, for Si flow on Vertical Boa rd A. Relocated. [FI-St-933, 932, 960, 961, 962, 9631 , Not installed in Unit 1. Two wide-range reactor coolant Yes Additional. het leg temperatures and Awo wide-range cold leg temperatures are provided on Vertical Boa rd AS. [2RCS*TI-410, 420) [2RCS*T1-413, 423) , Wide-range reactor coolant p re s- Wide-range coolant pressure Yes Relocated. sure recorder is located on recorder, [2RCS-PR-402] is Vertica l Boa rd A. [ PR-RC-403 ] relocated on Vertical Board A8, greator than 4 inches of the Unit i location. T s o
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DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _Vertica l Boa rd Sect ion A8 Safety Unit 1 Unit 2 Related Comments Non-regenerative heat exchanger Non-regenerative heat exchanger No Relocated.
' tempe ra tu re, [TI-CH-143], excess tempe ra tu re. ,
letdown heat exchanger prensure, excess letdown[2CHS-TI-143)2CHS-pressure, [ [ PI-CH-138 ], and exces s letdown PI-138), and excess letduwn heat tempara ture [ TI-CH-139 l a re loca- exchanger temperature, [2CHS-TI-ted on Benchboard A. 1391, are relocated on Vertical Board A8. Wide-range RCS pressure located Wide-range RCS pressure in- Yes Relocated. s
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on Vertical Boa rd A. [ P I-RC-402A ) dicators located greater than [ PI-RC-403 ) 4 inches on Vertica l Boa rd A8. 2RCS*Pl402 2RCS*P1403 Not installed in Unit 1. Wide-range Rch pressure in- Yes Design change. dicators Iceated on Vertical Boa rd A8. .
'2RCS*P!440(QA)]
2RCS*Pl441A] 2RCS*Pl441 BF)] 2RCS*PR441 O e T 4 9 145
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BEAVEP. VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTC4/ COMPONENT Vertical Boa rd Sect ion Ag i i Sa rety '
+ Unit i Unit 2 Related Comments 1
l Current readout for each reactor current readout for each No Relocated i coolant pezp is located on reactor coolant pump is lo-Benchboard A. cated 64 Vertical Boa rd A9. Letdown heat exchanger outlet Indications for these para- No Relocated j tempe ra tu re, [TI-CH-144); letdown meters are located on Vertical j riow lF1-CH-150l; letdown pressure, Boa rd A9. j PI-CH-145 ; Charging line flow ' I e F1-CH-122 ; Charging pressure 2CHS-TI-144' PI-CH-121 ; fill header flow 2CHS-F1-150 ! F1-CH-160 ; Fill header pressure 2CHS-PI-145 i Ps-CH-160 a re located on 2CHS-F1-122 j Senchboa rd A. 2CHS-PI-121 1 2CHS-FI-160 4 2CHS-PI-160 ) s_ Eight lockout Jacks for safety Eight lockout Jacks for safety Yes Design change.
; injection valves are located on injection valves are located i the extreme left end of Vertical on vertical Boa rd A9. Four Relocated, i Boa rd A. more are located on Vertical j Boa rd A6.
4 Unit I has primary drain transfer Unit 2 has e new prima ry d ra ins No Relocated. tank, [ DG-1 K-1 ), tempe ra ture. i temperature 12DGS-TI-107 ) j level, and pump discha rge pressure on Vertical Boa rd A9. Prima ry
- located un Vertical Boa rd A. drains tank 21 level l2DGS-L1=
. :ll-DG-107A) 107A] pressure [2DGS-PI-109Al j TI-DG-1blA) and pu2p discharge pressure , ! P I - DG-107 A ) [2DGS-PI 107A) are relocated i within 4 inches of Unit I > ! Instrumentation. t 5 Unit 2 has prima ry drains transfer Unit 2 has a new pump dis- No Additional. tank, ( DG- T K-2 ) , level and tank charge and pressure (2DGS-PI- . p re s su re on Ve rt i ca l Boa rd A 107B], prima ry drains transfer [ Li-DG-107A] and [ P I-DG-107B ] . tank 22 level {2DGS-LI-107B] and pressure { 2DGS-PI-109B] are relocated within 4 inches of Ursit 1 instrumentation. J 6-146 9
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/1 DUQUE w ! LIGHT COMPANY V
BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYisl8 SYSTEH/CDNPONENT Vertical soprA Section A9 Safety Unit 1 Unit 2 Rg1pted Comments Not installed in Unit 1. Pressure controllers for prl- No Design cleange. ma ry' drain transfer tank 21 and 22 pressure are installed on Vertical Board A. Narr7w range RCS pressure Na rrow range RCS pressure Yes Relocated. [ PI-RC-402B l located on VBA. [2RCS-Pl402A] located on Ve rt ica l Boa rd A9. , Not installed in Unit 1. Two-pen recorder for reactor No Additional containment sump level reco rde r [2RSS-LR-1511. is located on Vertica l Boa rd AS. a 9 L e I e 9 147
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[ l,l.i!;'j (V l s () DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYS80 SYSTEM / COMPONENT Benchboard Section B1 and 82 Safety Unit 1 Unit 2 , Related Comments The Units RCS fill valves Uni t 2's [2RCS-MOV-556A, Yes Relocated. { MOV-RC-556A,B and C1 control 8 and C1 control swi tche s , switches located on Sanch- are relocated on the same boa rd B. panel greater than 4-inches away f rom the origina l location on Benchboard B. The [ LCV-CHS-460B] control Uni t 2's [ 2CHS-LCV-460A Yes Relocated. i
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switches are located in the and B] control switches upper lef t-hand corner of the a re relocated the same Benchboa rd B. panel greater than 4-inches away from the original location on Benchboa rd B. 9
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r ( DUQUESNE LIGHT COMPANY Nl BEAVER VALLEY PLANT UNITS 1 AND R DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboa rd Sect ions 83 and B4 i Safety Unit 1 Unit 2 Related Comments Not installed in Unit 1. The following controls Yes Design change. a re new: RHR heat exchanger train isolations [2CCP*MOV-112A, 8) (See Note 1) Non- regene ra t i ve/ sea t water heat exchanger j [2CCP*MOV-173l v Neutron shleid tank /ex-cess letdown heater ex-changer supply l2CCP*A0V-170] Excess letdown coating water isolation [2CCP*A0V-105] Prima ry dra ins cooler supply and return iso-lation valves
]2CCP*AOV-171, 172, 173, 174]
Conta inment a i r com-pressor air supply [2CCP*MOV-118, 119, 120] Indicating lights for * {2CCP*MOV114) CRDM shroud cooling coli in-let isolation , Note 1: This function performed in Unit I by containment isolation valves, ' [MOV-CC-112A2 & B2] e a 149 d.
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v' DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboa rd Sect ions 83 and B4 Safety Unit 1 Unit 2 Related Comments The rollowing controls are located The following controls No Relocated, on Benchboard B; R9 P t he rma l b s*r- are relocated greater rier di scha rge valves I TV-CC-107A, than 4-inches on bench- Dasign change. 8, Cl, RCP cooling watsr suppiy boa rd 83 and 4 f rom their i sola t ion [ TV-CC-105A, B, C }. Unit I location. The RCP in addi t ion, [ TV-CC-103A, 3, C therma l ba rrier discha rge and A1, B1, C1] a re located on BBA. Isolation valves [2CCP* A0V-107A,B,Cl, RCP cooling water supply isolation CRDM shroud fans coo'ing coils [2CCP*MOV103A,B,Cl, inlet va lves [ MCC;,C-111 A, B, C) CPDM shroud fans cooling a re located on DB-B. [2CCP'MOV-111A, B, C], and coils inlet isolations PAB heqder and load esciation PAB header isolation valves v..... ..; located on BB-B. [2CCP*MOV-175-1, 175-2,
'TV-CC-125, 125-1*, 125-2' 176-1, 176-2, 177-1, 177-2].
TV-CC-126, 126-1*, 116-2 TV-CC-127, 127-1*, 127-2 TV-CC-134-1*, 134-2, 134-3*] TV-CC-1361* TV-CC-129*, 129-1*, 129-21 1V-CC-121-2, 137, 121-11) TV-CC-137A*, B'] r
*These . valves a re actually located on Section C next to BBB.
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DUQ*'SNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboard Sections B3 and 84 Safecy Unit 1 Unit 2 Related Comments Controls for the refueling Cont ro l s fo r the re- No Relocated, wster storage tank reci rcul- fueling water storage tank ation pumps {QS-P-2A, 28] and cooling pumps [ 2QSS-P-the chemical addition pump 22A, B] and the chemical l 1QS-P-3 ] a re located on addition pump [2QSS-P-23) Benchboa rd B. is located on Benchboa rd B3 & 4 greater than 4-inches of its Unit I loca t ion.
]
Controls for purification Controls for purification No Relocated, pumps and fuel pool cooling pumps and fuel pool pumps located on Benchboard cooling pumps located on B. [FC-P-4A, B] [ FC-P-1 A, B] Benchboard 83 & 4 greater than 4-inches of its Unit 1 location. [2FNC-P-24A, Bl [2FNC-P-21A, B] For each train there is a key- For each train, there is an Yes Same function, lock control switch for the over- arm-block switch for the over-pressure protection system pressure protection system on BB B. yet to be designated a location. Not installed in Unit 1. There a re new valves { 2CCP* No Design change. MOV126 and 127] provided for S/C blowdown train inlet ' isolation. Control for fuel pool heat Control for fuel pool Yes Design change. exchanger inlet isolation heat exchanger train va lve [ TV-CC-128 ] located on isolation [2CCP*MOV128A,B) BB B.
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r . (p h" - 5 /} b DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2* DIFFERENCE ANALYSIS SYSTEM /CDMPONENT Vertical Board Section 85 Sa fe ty Unit 1 Unit 2 Reisted Comments Analog rod position indicator Digital rod position [2RDI- Yes Design change. located on vertical Boa rd A. IND) Indication located on Vertical Boa rd B5. Reactor coolant pumps vibra- Reactor coolant pumps No Relocated. tion monitor panel is located vibration monitor panel beh ind Ve rt ica l Boa rd B. Is located on Vertical Boa rd B5. ) Rod position insert limit bank Rod position. insert limit Yes Relocated. recorders ( A-D) is located on bank recordes's ( A-D) {2RDI-Vertical Board A. 2R409A-0] is estocated greater than 4 inches of its Unit I location. Computer trend recorders is computer trend recorde rs No Relocated. located on Vertical Boa rd A. {21HC-VR760(761)] is reloc-ated greater than 4 inches of its Unit I location. O t 9
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. DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboard Section C2 Safety Unit 1 Unit 2 Related Comments Unit I has two control There is only one control Yes Same function.
switches for each Main Steam- switch for each Main line Isolation Trip Valve, Steamline isolation Trip Relocated. (TV-MS-101A.8,C), located on Valve [2 MSS *HYV101A,B,C]. Benchboa rd C. These controls are re-located Benchboa rd C. (Very close to original position).
'l Unit I has one control switch There are six control Yes Design change.
fo r each pa ra l le l Aux i l ia ry switches for the Aux-Feed Pump Steam Trip Valve, Ilia ry Feed Pump Steam lTV-MS-105A. B] on Benchboa rd Supply, [2 MSS *SOV-105A-F]. C. T he re is also a main The se cont ro l s a re re-isolation valve for the steam located on Benchboa rd C. supply to.the valve, [MOV-MS-105l. . Unit I has one control switch , Unit 2 has two control Yes Design change. For Main Steam isolation Valve switches for each Main Bypa s s [ MOV-MS-101 A, B,C) . Steam isolation Valve By-pass, {2 MSS *SOV-102A1, A2 ' B1, B2, C1, C2). These controls are arranged vertically in Unit 2 and
- horizontally in Unit 1.
Unit I has one control switch Unit 2 has one control Yes Holocated, for each of the two motor- switch for each of the operated Auxilia ry Feed Pumps two motor-opera ted Aux-operated f rom Benchboa rd C. iliary Feed Pumps slightly relocated on Benchboa rd C. The Generator Bearing Oil The Generator Bearing Oil No Relocated. Vapor Extractor is controlled Vapor Extractor is con-f rom Benchboa rd C. . trolled f rom Benchboa rd C in the same general a rea . , 6 e 154
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f( (D) . [s-$ DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Benchboa rd Section C2 Sa fe ty Unit 1 Unit 2 Related Comments Not provided in Unit 1. There is one control No Additional. switch for each of the two Chemica l Reci rculation Pump Suction isolation Valves, 12fWE-SOV-100A B]. Th i s i s fo r the rec i rc-ulation of Prima ry Plant Domi ne ra l i ze r Wa te r Storage Tank. j Not installed in Unit 1. Four pushbuttons for Yes Additional, t main steamline isolation j actuation on Benchboard i C2. 1 l i 4. 3 e } l i I t T t t f. 155 I
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b 8 DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS . d SYSTEM / COMPONENT ' Benchboa rd Sect ion C3 and C4 Safety Unit 1 Unit 2 Related Congents The Emergency Diesel Gene ra to r 1 The Unit 2 Emergency Diesel Yes Relocated, and 2 startup pushbutton is located Generator 1 and 2 start on Benchboa rd C. pushbutton is relocated greater than 4 inches from the original location on Unit 1. Unit I has a manual voltage control Unit 2 has manual and automa- No Design change. located on Benchboard C. tic voltage control. Controls '
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on Unit 2 Vertical Boa rd C ( that are not on Unit 1 ) a re Emergency Generator Manual
,; Voltage Adjust and the Emergency Generator Voltage
~ Regulator Salance Meter. On
' - the Denchboard C there is a Voltage Regulator Transfer Switch Not included in Unit 1. There a re ind ica t ing lights No Design change, for the battery breaker for the new battery, 6. ,
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. DUQUESNE I.lCHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Ve rt ica l, Boa rd Sect ion C Safety Unit 1 Unit 2 Related Comments
't No ;
Not installed in Unit 1. CCR Differential Pressure Additional. Controllers installed on Ve rt ica l Boa rd C. 3 [ PK-2CCP-DCV-101 A, B, C) l i i [ a ; i i l i t I i l i I t t I t i
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( ) v' {J$' Q' i DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _ Yertiga; Roa rd SectIon C5 Safety Unit 1 Unit 2 Related Comments e Amp meters for each CCR pump. Indicationn greater than 4 No Relocated, inches f rom Unit I location
=
for amp meters for escl. CCR pump. ~ 7 Prima ry component cooling surge New indications on Vertical No Additional. . tank level, [ L i-CC-100 ] Boa rd C5 Prima ry component cooling surge tank leval, Relocated. 3
. [2CCP*L1-100A, 8)
Prima ry component cooling Prima ry component cooling p re s su re, [ P I-CC- 100 ] pump discharge pressure, [2CCP-PI-145A, B, C] and and differeratial p re s-sure [2CCP-DI-100-1, 2) Prima ry component cooling Prima ry component cooling .s water tempera ture, water heat exchanger dis- [TI-CC-100) charge temperature, [2CCP-TI-100A, B, C) CCR flow header indication, Low high range flow to CCR [ F l-CC-118, 119, 117]. headers. [2CC*F1-117A1, B1] . l2CC*F1-117A2, B2]
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Controllers located on Vertical Controllers located on Vertical No Additional. Boa rd C a s fo l lows: Board C5. , Primary comocnent cooling surge Prima ry component cooling tank, [ AM-CC-100) surge tank level cont ro l l e rs [2CCP-LK-100A, Bl Prima ry component cooling p re ssu re, [AM-CC-100] Prima ry component cooling
- 1. pump recirc. [2CCP*DK-100-1, Prima ry component cooling 100-2) wa ter temperature. { AM-CC-100 ),
temperature controller Prima ry component cooling pump [2CCP-TK-100A, B, C] e e b w h 158 gO -
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, b DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Vertical Boa rd Section C5 Safety Unit 1 Unit 2 Related Comments ,
Unit 1 has three RWST wide-range Unit 2 has two RWST wide-range Yes Additional level indications on Vertical indication [ 2QSS*Ll-100A, B] Boa rd C. [ L l-QS- 100A, B, C] on Vertical Board C5 and two narrow-range indicators l2QSS*Li-102A, Bl on Vertical ', Board C5. Unit I has two temperature Unit 2 has two temperature Yes Relocated. ,
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[TI-QS-101A, B) and two level [2QSS*TI-101A, B) and two indications, [ LI-QS-101 A, B] tevel ladicators (chemical on Vertical Boa rd C. addition tank) l2QSS*LI-101A,
- 8) 'on Vertica l Boa rd C5. One train is greater than 4 inches of its Unit I location.
Unit I has temperature ind ica to rs Unit 2 has temperature indica- Yes Relocated. for the RWST [ TI-QS-100A, B] and tions for RWST { 2QSS*TI-100A, inlet and outlet temperature for the reci re, coolers [ T I-QS-105, 106]. Indication for: I r.d ica t ion fo r: No Relocated Spent Fuel Fool Tempe ra tu re 2 Spent fuel Pool Temperatures Redundancy. [TI-FC-103) [FNC*Tl103A, Bl 2 Spent Fuel Pool Levels , [2FMC*Ll102A, BJ Refueling Cavity Temperatisre Refueling Cavity Temperature . [ T I-FC-101 ] [2FNC-T1101] Fuel Pool lon Exchanger Flow Fuel Pool son Exchanger Flow IFi-rC-1011 12FNC-Ft101] located on Vertical Boa rd C. , location greater than 4 inches of its Unit I location. Leakage detection for reactor Not installed in Unit 2. Yes Additional , coolant gas vent system is , located on Vertical Boa rd C [ PI-RC-104 ] . 159 A
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- 19. h [i DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS
. SYSTEM / COMPONENT _ Ve rt ica l Boa rd Section C5 Safety Unit 1 Unit 2 Related Comments Unit 1 has no isolation or bypass Unit 2 nas control swi tches for Na Design change.
valves for the 6th point heaters. each isolation valve and bypass valve for the 6th pt. beaters. 2CNM-MO/-131A, Bl . 12CNM-MOV-132A, B) Only local indication for the Unit 2 has two indications Yes Additional, water box temperature. for water box inlet j tempu ra tu re 12CWS-TI-100A01 2CWS-TI-100B01 Unit I has no control room Unit 2 has a flow totalizar Yes Additlanal, indication for cooling tower for cooling towe r b l owdown blowdown flow, flow. [2CWS-FQl-101] I Unit I has no control room A flow recorder is used to Yes Additional, recording of cooling tower record cooling tower blowdown blowdown flow, flow, i2CWS-FR-101] Unit i does not have any cooling Unit 2 has control switches No Additional. tower zone sludge gate valvo. with indicating lights for
- i each tower zone sludge gate valve. [2CWS-MOV-SO3A, Ej ,
l No indications for Unit 1. Level indications for reheater No Additior.al, drain receiver tanks and 1 s t, 3rd, 4th, and 5th feedwater heaters, 2HDH-LI-100A, C) 2HDH-L1-103A 2HDH-L1-120A 2HDH-L1-122A 2HDH-L1-124A No ind scations for Uni t 1. Status light panel for isola- No Additional, tion valves for extraction
- steam and feedwater Faster isolation valves. ,
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<~4 DUQUES IGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFTERENCC ANALYSIS SYSTEM / COMPONENT Vertical Board action C5 Safety Unit 1 Unit 2 Related C2pments Unit I has manual isolation Ten control switches for ex- NO Design change, valves for extraction steam, traction steam isolation _. .._
valves. Additional. ESS-MOV-1011 ESS-MOV-102) ESS-MOV-106A, Bl ESS-MSV-105A, El . ESS-MOV-103A1, A2] ESS-MOV-10381, BP] Unit I uses manual bypass velves Unit 2 has eignt control No Design change. around the steam traps and drains switches for the ADVs that on extraction steam system. bypass the restricting ori- Additional, rices on extraction eteam system. ESS-A0V-107, 10?, 111] ESS-A0V-108, 1;n, 112] ESS-ACV-115A1, A2 ESS-A0V-115bl. 32 ESS-A0V-114A1, A2 ESS-A0V-11481, B2 ESS-A0V-113A1, A2 ESS-A0V-11381, B2 , Unit 2 uses an air-operated valve to bypass the restric-
- ting orifice which is located on the extraction steam line d ra i ns. There a re four va'Ives controlled by two switches:
A4 12ESS-A0V-113A2, 2ESS-A0V-11382, 64 Unit 1 uses open-close trip valves Unit 2 uses a LCV for removing No Design change, ope ra ted frca the benchoca rd for excess steam and for p6cging, purging the main steam system and based on heater level con- Relocated. removing excess steam, trolled on Vertical Dea rd C5. fou'r swe tches for eight va lves. SVS-LCV-100AI, C3 ' SVS-LCV-10003, D3 SVS-LCV-100A4, C4
- EvS-LCV-100B4, D4i '
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t l DUQUESNE LIGHT COMPANY , BEAVER VALLEY PLANT UNITS 1 ANC 2 l DIFFERElvCE ANALYSIS i SYSTEH/ COMPONENT -/ortical Bowrd Section C5 i j Safety l Unit 1 Unit 2 Related Comments Not included in Unit 2's control Unit 2 has two 24-point re- No Additional. i room. corders ( tumperature) fo r i extraction steam drains i temperature and steam drains 1 tempe ra ture. l [2ESS-TR-100]
- [2SDS-TR-100l 1 .
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DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYST EM/ COMPONENT _ Ve rt ica l Boa rd Sect ion C6 Safety.
- Unit ' Unit 2 Related Comments ,
Not in Unit 1. Level indication for [ TM-23), No Additional. Demineralizer Water Storage Tank. [2WTD-Li-107] . Indication of feed flow from the Indications for auxilia ry feed Yes Relocated. auxilia ry feed pumps on the flow to each S/G have been re-Vertical Boa rd . located on the same Vertical Board (4). B, C) , 12fWE-fi-100A, 2FWE-fi-100A2, B2, C2) Unit 1 has no level control valves Unit 2 has two controllers No Design change. on the blowdown tank. Manually set and indicating lights for the throttle valves determine flow into level control of the S/G blow- Additional the tank, down tank. [2BDG-LCV-102) Not in Unit 1. Ono control switch with three Yes Design change, sets of indicating lights. 2BDG-LCV-101All Additional, 2BDG-LCV-101A2] 2BDG-LCV-101B] Na r row- ra nge level indication, one Un i t 2 ha s na r row-ra nge l eve l No Relocated. for each S/G. Indication for each S/G. It has been relocated on Vertical
- Boa rd C6 ( same boa rd ) .
2FWS-L1-475, 485, 495 . Also, 2FWS-LI-474, 484, 494 . Unit I does not have any indica- Un i t 2 ha s p rog ra mmed S/G No Additional, tion for programmed setpoint of level indication for each S/G. S/G level. 2fWS-LI-478 2fWS-L1-488 . 2fWS-L1-498 ; Unit I has no control room in- Unit 2 has indicatin for blow- No Additional, dication for S/G blowdown tank down tank level on' Vertical
- level. Board C6.
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. BEAVER VALLEY PLANT UNITS 1 ANO 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Ve rt ica l Boa rd Sect ion C6 Safety Unit'1 Unit 2 Related Comments Unit I has indication for auxil- Unit 2's indications for aux- No Relocated.
la ry steam header pressure and illery steam header pressure steam generator manifold pressure. and S/G feed manifold pressure have been relocated on the sar.e Vertica l Board. [2 ASS-PI-100] [2FWS-PI-153) One indicator for the one heater Two indicators for the two No Design change. ? i dra in tank, hea ter dra in tanks. [2HDH-L1-lO6A] [2HDH-Ll-1068] . Unit I has level indications for Unit 2's level indications for Yes Relocated. prima ry domineralizer water storage the prima ry domineralizer water tank, stor6ge tank, [2FWE-L1-104A1) and [2FWE-Li-104A2] have been relocated on Vertical Boa rd C6. No indications for Unit 1. Unit 2 has level indications No Design change, for reheater drain receivers [1k-23B], [ TK-23Dl and for the Additional. 1st, 3rd, 4th, 5th, feedwater i heaters. j 2HDH-LI-1008, Dj . 1 2HDH-Li-103B: ) 2HDH-LI-120BL 2HDH-LI-1228 . 2HDH-L1-1248 I Unit 1 has no status panel for Unit 2 has a status light panel Yes Design change. , I t he d ra i n s . for the main steamline drain i valves. Located on Vertical Additional, j Board C6. ! Unit I has a three-pen recorder The three-pen recorder for No Relocated. for S/G pressures. [ MSS-PR-472) S/G pressures [2 MSS-PR-475) is relocated on Vertical i Boa rd C6. , 3 . i j 164 E.
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BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM /COMPONENY Ve rt ica l Boa rd Sect len C6 Sa fe ty Unit 1 Unit 2 Related Comments Unit I has no startup feed pump. Uni t 2's sta rtup feed pump No Design change, has discharge pressure in-dication [2fWS-Pl-1521 and Additional, amps Indication [2FWS-II-24] located on Vertical Board C6. Unit 1 indicators for amps (con- Unit 2 has indicators for No Relocated . densa te pumps, auxilla ry feed amps (condensate, etc. ) a re- ./ pumps and feed pumps, heater located on Vertical Board C6. drain pumps) are on the Benchboa rd. Not installed in Unit 1. Unit 2 has indications for No Design change. , Moisture Separator Drain Pumps [ P22A and B] discharge Additional, p ressure located on Vertical Boa rd C6. Does not have any cooling tower one control switch with indi- No Design change. zone sludge gate valve. cating lights for each cooling tower zone sludge gate valve.
'2CWS-MOV-203B
- 2CWS-MOV-203C 2CWS-MOV-203D Located on Vertical Boa rd C6.
Unit 1 does not have any valves Unit 2 has one common switch No Design change, s im i la r to [ CWS-MOV-202 ) . for all ten va lves [ 2CWS-MOV- , 202A - K] and also a switch for local / remote control located on Vertica l Baa rd C6. 4 e o 165 n c
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DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNIIS 1 AND 2 DI FFERENCE ANALYSIS SYSTEM / COMPONENT Vertical Boa rd Sect ion C6 Safety Unit 1 _ Unit 2 Rolated Comments Unit I uses manual bypass around Unit 2 has a control switch No Design change. the following steam traps. fo r { 2GSS- AOV-100 ], bypass valvo around the restricting orifice on the gland steam dra in l ine.
- Unit 2 has one control switch for all three va lves [2SDS-AOV-112A, B, C] which bypass ,
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a round the restricting ori-rice located on Vertical Boa rd C6. 8 Unit 2 has one control switch for all five valves [2SDS-AOV-113 througt.117] which bypass around the restricting orifice located co Vertical Board C6. Unit 2 has one control switch for all the restricting ori fice
. bypasses (2SDS-A0V-118, 119, 125, 126l located on Vertical .
Boa rd C6. Unit 2 has one control switch . for the valve bypassing the restricting ori fice ( 2SDS-AOV-128) located on Vertical board C6. Unit I does not have moisture Unit 2 has level indication for No Design change. sepa rator dra in tanks. moisture sepa rator drain tanks. 2HDil-Ll-115A PIIDH-Li-1158 2ilDri-L i - 115C [2tIDH-L1-1150 Unit I has no level control from Unit 2 has a S/G blowdown tank No Design change. the control room, level cont roller located on , Vertical Boa rd C6. Additional. [2 BOG-LIC-101] 166 n
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DUQUESEE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFEREllCE ANALYSIS SYSTEM / COMPONENT Ve rt ica l Boa rd Sect ion C6 Safety Unit 1 Unit 2 Related Comments Unit I uses manual bypass around Unit 2 has a control switch for No Design change. steam traps. [2GSS-A0V-100), bypass valve - around the restricting orifice on the g4and steam dra in line. Condensate pumps di scha rge pres'- Indications for hotwell level No Relocated. sure and condenser hotwell level and conder. sate pump discha rge are on the Vertical Boa rd C. pressure have been relocated - i i on Vertica l Board C6. ,, Unit I does not have any indicators Unit 2 has indication for S/G No Additional, for vide-range level, wide-ra nge level located on Vertical Boa rd C6. [2FhS-Ll-477, 487, 497] Unit I has indications for S/G- Unit 2 has indications for S/G Yes Relocated. na rrow-range lovel, na rrow- ra nge level relocated on Vertical Board C6. I e e O s l l 9 e D 0
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- p) f DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Vertical Boa rd Section C7 and CS Safety .
Unit 1 Unit 2 Related Comments in Unit 1, turbine rotor position in Unit 2, turbine rotor No Design change. is indicated on a single-pen position is indicated on a reco rde r 0,n Ve rt ica l Boa rd C. common two-pen recorder with turbine speed and valve position on Vertical Board C7. Turbine vibration and eccentricity phase angle indications are loca-Turbine vibration and eccen-tricity phase angle indica-No Relocated ') ted on Benchboard C. Lions are relocated on Vertica l Boa rd C7 and 8. Unit I does not have turbino Unit 2 has common. control No Additional, exhaust hood spray control in switches for both turbine the control room, exhaust hood spray valves located on Vertical Board C7, O s s # 4 9 e 4 e 168
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D Pg DUQtt;SME LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 (3) DIFFERENCE ANALYSIS SYSTEM / COMPONENT Buildina Service Panel fBSP) Safety Unit 1 Unit 2 Related Comments Not installed in Uait 1. Cont ro l for heater coil p ro- Yes Design change, vided.on 2BSC. [2HVS*CH219A, B) Additional. Not installed in Unit 1. Cpntrol provided on the BSP Yes Design change. for the f ollowing: Addtional. Fliter leak collection exhaust p fan [2HVS*FN204A, B] Controls area supply fans [2HVC*fM265A, BI Controls area exhaust fans {2HCV'fM266A, B] Charging pump cubicle and CCP a rea emergency exhaust fans (2HVP*FN264A, B] Diebel generator room supply ran 12HVD*fM270A, B] 2HVD*FN271A, Bl Main steam room A/C unit fans [2HVR*fM206A, B] Not installed in Unit 1. Controllers are provided on the Yes Design change. , 2BSC for the following: Additional. Emergency switchgea r roomb, tempe ra tu re [2HVZ'TK21A, B] Leak collection fan flow ' l2HVZ*FK22A, B] ' Auxiliary building bypass flow [2HVPafK21A, B]
' Diesel generator building tempe ra tu re l2HCD*TK21A, B) t 0
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DUQUES LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 Det?ERENCE ANALYSIS SYSTEH/ COMPONENT _guildina Service Panel (B$fl Safety Unit 1 Unit 2 Relaled Comments Not installed in Unit 1. Controllers provided for the Yes Design change. following dampers on 2BSC: Additional. Main filter bank isolation common switch: B] 12tiVS* HOD-210A,B] PilVD' HOD-211A, common switch: 2tiVS* HOD-212A, d] 12HVS*HOV-213A, B] ) Holsture separator inlet / outlet isolation common switch: (2HVS* HOD-218A, 8) [2HVS* HOD-203A, B] Un f i l te red leak collection i so la t ion /unfi l te red to filter leak collection common switch: [ 2ilVS* HOD-201 A, B) [2HVS* HOD-202A, B] {2HVD-HOD-28] - ACU 2218 supply to auxiliary building (2HVD-MOD-29) - ACU 2218 supply to contal,nment . Aux i l i a ry bu i l d i ng a nd solla vaste to leak e collection icolation [2HVP' HOD-22A, 8) 2HVP" HOD-24A, B) 12HVR*DNP-204 ) - conta inment purge exhaust flow adjust damper Control room outside air intake [2HvC' HOD-201A, B, C) Control room emergency fan isolation . [ 2ttVC' HOD-204 A, Bl . IllVR*DHP-206 ] - vacuum break isolation damper , 171
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b b ,IN. U U DUQUESNC LIGHT COMPANY U) , BEAVER VA!. LEY PLANT UNITS 1 AND 2 i DIFFERENCE ANALYSIS SYSTEM /COMPONEN1 .iBuildino Se rvice Panel fBS&1 Safety Unit 1 Unit 2 Related Comments AOU-208A, B cooling coils isolation valva [2SWS*MOV148A, B]
- common switch: ACU-203A, 6 (cable vault rod control A/C unit) inlet isolation l3HVR*
1HVR* MOD 26A, B] MOD 27A,b)
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i Cable vault and rod control A/C unit i [2HVR*AOU208A, 8) cnneon switch: 3 2HVH*M0021 1 2HVR*MDb22 1 Not installed in Unit 1. The rnilowing recorders are Yes R9tocated. J installed on 2BSC: 1 i Supplementa ry leak flow ! reco n de r [HVC-FR-22] , Emergency makeup fan flow [2HVC-tR-221 , Not installed in Unit 1. The following Indications a re Yes Design change, on the 2BSC: , Additional. l intake temperature to diesel generatcr building 4 [2HVD-TI-121A, B] MCC-2E3 cubicle temperature ,.' [2HVP-TI-280A, B] Control room supply air ! temporsture
- [2HCv-TI-24A, Bl '
Leak callection ran flow
- i [2HCV-fi-22A, B]
j Auxiliary building bypass *
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[2HCV-fi-21A, B] 172
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V DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Alternate Shutdown Panel (ASP) Sa fe ty Unit 1 Unit 2 Related Comments The proposed Backup i nd i ca.t lon The Unit 2 Alternate Shutdown Yes Design chenge. Pa ne l (BIP) will have capability ' Panel will have.the instrument- ~ of being powered f rom either ation and control as in the Additional. [ MCC E5 o r E6 ] . See Attachment attached Table 7.4.2 from BVPS-8 the associated instrumentation 2 FSAR. The inst rumentation is and controls, powered from the orange train only.
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I G .g. (q w .- J ( ! (.f4) DUQUEL.[ LIGHT COMPANY ~ BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Technical Specifications sarety Unit 1 Ifnit 2 Related Comments All Tech Specs safety-related Table 2.2-1 SSPS trip setpoints. Table 2.2-1 SSPS trip setpoints The bases for the SSPS Tech. Specs, a re the same. The change is in the setpoint of an automatic actuation. The only operator action required . la verification which will be done by approved procedures. ,
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LSSS Bases: Loss or flow LSSS Bases: Loss or riow The loss or flow change is in the setpoint of an automatic actuation. The only operator action required is verification which will be done by approved procedures. 3.1.1.4 Modera tor Tempera ture 3.1.1.4 Moderator Tempe ra ture The bases for MTC is the same. The Coefficient Coerricient dirrerence raf tects serety analysis techniques. No operationa l impact. 3.1.2.7 Bora ted Wa ter Sources 3.1.2.7 Bora ted Wa ter Sources The bases for the Tech. Specs. on borated water sources are the same. The actual wording reflects the dirrerences in system design which
. are addressed in the individual add re s sed in the individual system dirrerence analysis. Ope ra to r tra ining on individual system dir-forences and use of approved pro-
. cedures wil l preclude chances or operationa l errors. -
3.1.3.2 Position Indicating 3.1.3.2 Position Indicating The bases for the rod position Systems , Systems indicating system are the same. The actual wording rpriects dir-ferences in system design which a re addressed in the individual system difference ana lysi s. Operator training on individual
- system dirrerences and use or. '
approved procedures will preclude chances or operational error.
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($'? A v b DUQUESNE LIGHT COMPANY v BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Technical Specifications Safoty Unit 1 Unit 2 Related Comments 3.2.2 Ileat Flux Hot Channel 3.2.2 Heat Flux Hot Channel The bases for FQ2 is the same. Factor Factor Engineering data has effected spe-ci fic numbe rs. No ope ra t iona l impact.
- 4. 2. 2. 2 Su rve i l l a nce Changes 'in surveillance methods will Requi rements Heat flux pose no operational problems because flot Channel Factor routine surveillance testing is done t I AW epproved procedures provided by '/
the Senior Engineer. 3.2.3 Nuclea r Entha lpy Hot 3.2.2 Nuclea r Enthe lpy Hot The bases for FN delta-H is the same. Channel Factor Channel Factor Engineering data has effected specific numbers. No operational impact. Table 3.3-1 Reactor Trip System Table 3.3-1 Reactor Trip System The bases for the Tech. Spec. Is Instrumentation Instrumentation the same. The change is in the setpoint or an automatic actuation. Table 3.3-2 Reactor Trip System Table 3.3-2 Reactor Trip System The only operator action required is Instrumentatiora Response Times Instrumentation Response Times verification which will be done by approved procedures. Table 4.3-1 Su rve i l l a nco Table 4.3-1 Su rve i l lance Changes in surveillance inte rva l s , Requ i rements Requ i rement s will pose no operational impact because routine surveillance test-ing is done IAW posted schedules provided by the Senior Engineer, i Table 3.3-3 Engineered Safety Feature The addition of action statments is Actuation System Instrumentation the result of different table lay-out. Operator training on Tech. Spec. differences will address this. No operational impact. Table 3.3-5 Table 3.3-5 The bases for the response times are the same. The di f ferences result Table 3.3-6 Table 3.3-6 from system differences which will be addressed in the individual sys- l tem di fference ana lysis. 1 178
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. BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Technical Specifications Safety Unit 1 Unit 2 Related Comments 4.3.3.6.1 Fi re Detection 4.3.3.6.1 Fire Detection Changes in the fi re detection sur-Instrumentation Surveillance Instrumentation Surveillance veillance requirements will pose no Requi rement s Requirements operational problems since routine survelliance testing is done IAW approved procedures provided by the Senior Engineer.
l Table 3.3-10 Fire Detection instruments Table 3.3-10 Fire Detection Instruments Changes in the table result from dirrorences in system design which (_) is addressed in the individual system dirrerence analysis. 3.3.3.7 Chlorine Detection 3.3.3.1 Chlorine Detection TP- chlorine detection system action Systems Systems st..iement is different due to system dir: arences which wl'1 bn addressed in the individual system dirrerence analysis. Use of approved procedures will preclude chances of operational e r ro r. Table 4.3-7 Accident Monitoring Tsble 4.3-7 Accident Monitoring instrumentation provided reflects instrumentation Surveil lance Instrumentation Surveillance new system arrangemont/ components Requirements Requi rements installed in Unit 2 This instru- . mentation will be addressed by Table 3.3-12 Radioactive Liquid Table 3.3-12 Radioactive Liquid approved procedures. This will Errluent Monitoring eliminate any chance or operational Errluent Moni toring
- Instrumentation Instrumentation e r ro r.
Table 4.3-12 Radioactive Liquid Table 4.3-12 Changes in surveillance intervals / Effluent Moni toring methods will pose no operational Instrumentation Surveillance problems because routine surveil-Requirements lance testing is done IAW posted schedules / procedures provided by the Table 3.3-13 Radioactive Gaseous Table 3.3-13 Senior Engineer. Errluent Monitoring q I ns t rumen ta t ion i Table 4.3-13 Radioactive Table 4.3-13 ! Gaseous Ef fluent Monitoring Instrumentation Surveillance . Requ i rement s . 179 I
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c~ < . . . . .q DUQUESNE LIGHT COMPANY DEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Technical Soecifications Safety Unit 1 Unit 2 Related Comments 3.6.1.3 and 4.6.1.3 Containment 3.6.1.3 and 4.6.1.3 Dirrerences in surveillance inte rva l s/ Air Locks methods will pose no operationa l p rob lems. Routine surveil lance testing is done I AW approved sched-ulos and procedures provided by the Senior Engineer. 3.6.1.4 internal Pressure 3.6.1.4 The dirrorence in the containment systems design are covered by the ., systems dirrerence anlaysis. The 3.6.1.5 Containment Systems Air 3.6.1.5 changes in the LCO's will be Tempe ra tu re covered by Tech. Spec. dirrerence training and will reinforce the 4.6.1.6.1 Su rve i l l a nce 4.6.1.6.1 system dirrerence training. 4.6.2.1 Conta inment Quench Spray 4.6.2.1 r.cceptance criteria dirrorences Systems Surveillance Requirements will have no operational impact. Procedures developed and approved by the Station Engineering Depa rtment will establish and document test acceptance criteria. 3.6.2.2 and 4.6.2.2 Containment 3.6.2.2 and 4.6.2.2 This Tech. Spec. dirrors from Unit 1 Reci rculation Spray System and due to design and physical a rrange-
- Survei l lahce Requi rements ment dirrerencer between the Unit 1 and Unit 2 containment rec i rcu l a t ion spray systems the dirrerences are covered by the Unit 1/Un i t 2 d i r re r-ence analysis. The LCO dirrerences will be covered by Tech. Spec. dir-fo rence t ra i n i ng a nd wi l l re-en fo rce the systqms dirrerence training.
3.6.2.3 Chemical Addition 3.6.2.3 Quench spray system dif ferences System a re cove red by the d i f fe rence analysis. LCO dirrerences are
- 4. 6. 2. 3 Su rve i l l a nce 4.6.2.3 covered by Tech. Spec s, d i rre r-Requirements ence training and will re info rce systems di rrorences tra ining.
7 182
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- DEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Technical Specifications Safety Unit 1 Unit 2 Related Comments 4.6.4.2 Elect ric Hyd rogen 4.6.2.3 Recombiners Survei llance No operational problems are posed Requirments by different surveillance test acceptance criteria. These dir-forences a re documented on ap-proved test procedures.
3.7.1.3 Prima ry Plant 3.7.1.3 The same reasoning applies as for Dominera lized Water the AFW surveillance requirements. ' 3.7.4.1 Reactor Plant River 3.7.4 Service Water System This is the same Tech. Spec. under Water System different titles. This will be covered by individual systems difference t ra i n i ng. 4./.7.1 Cont ro l Room Emergency 4.7.7.1 The acceptance criteria differ-Habitability System Surveillances ences, due to cont rol room system Requirements design differences, are covered by approved test procedures. Tech. Spec. di f ference tra ining wi ll re-i n fo rce the knowledge that the con-trol rooms will be common and the most limiting Tech. Spec. will
- govern until both Unit's Tech.
l Specs, a re brought into agreement. Tech. Spec. 3/4 7.7 will be revised to address the common control room environment. i 4.7.8.1 SLCHS Surveillance 4.7.8 Di f fe rences in surveillance test Requ i rements methods and acceptance criteria will pose on operationa l problems.
- Routine testing is done IAW ap-proved procedures provided by the Senior Engineer.
Table 3.7-4a Safety-Related f rom an operationa l standpoint any Hydraul ic Snubbers di f ferences wi ll pose no problems due to no change in the bases Table 3.7-4b Safety-Related for snubbers.
- Mechanical Snubbers 183
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b\ b() (J) DUQUESNE LIGHT COMPANY (h w/ i BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _Technica l Specifications Safety Unit 1 Unit 2 Related Comments 3.7.13.1 At least one auxiliary 3.7.13.1 Differences in river water system river water subsystem shall be design and nomenclature are covered ope ra b l e, by the individual systems difference analysis. 3.7.14.1 Fire Suppression . D i f fe rence s in fire suppression system Water System design and nomenclature covered by the by the individual systems difference analysis. Tech. Spec difference / training will serve to reinforce the
. knowledge of the systems differences.
4.7.14.1.1 Fi re Suppression 4.7.14.1.1 Differences in surveillance require-Water System ments and methods caused by system's design will pose no operationa l p rob-less. Routine testing is done by approved procedures provided by the Station Senior Engineer. System dir-Terence analysis training will provide sufficient insight into the procedures. 4.7.14.1.2 Fire Systems 4.7.14.1.2 No operational di fference. Covered by Surveillance Requi rements normal surveillance scheduling , 4.7.14.1.3 Fire Systems
- Surveillance Requi rements 4.7.14.2 Sprinkler
- stems 3.7.14.2 Spray Systems Differences in fire suppression systems design and nomenclature are -'
covered by systems difference anal-ysis training. Tech. Spec. LCO dir-forences training will se rve to re-enforce di fferences ana lysis tra ining. - 3.7.14.3 Low Pressure CO2 System 3.7.14.3 Low Pressure CO2 System 9 e 0 184 a
A (h f? U U DUQUESNE LIGHT CDMPANY O BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT Technical Soecifications Sa fe ty Unit 1 Unit 2 Related Comments 3.7.14.4 Fire Hose Station 3.7.14.4 Fire Hose Stations f rom an operationa l standpoint the 1 hour limiting action statement and 3.7.15 Penetration Fire narriers 3.7.15 Fire Rated Astemblies intent applies to both Units. Through knowledge of each Unit's layout, adequate fire protection will be ensured available as required. 4.7.15 Fire Barriers 4.7.15 Differences in the required scope of surveillance testing will pose no operationa l prnblems. Routine test-Ing is done IAW approved schedules and procedures provided by the Engineer. 3.8.1.1 AC Sources 3.8.1.1 AC Sources The dif ferences in AC System's de-sign is co'.ored by the system's dif-3.8.1.2 AC Sources Shutdown 3.8.1.2 ferences analysis training. The Tech. Spec, difference training will se rve to reinforce the system's differ-ence training. 4.8.1.1.2 AC Sources 4.8.1.1.2 Differences in survelliance intervals / Survel f lanco Requi rements methods will pcss no operational prob- . Iems. Routine surveillance testing is done I AW approved schedules and proce-
, dures provided by the Senior Engineer.
3.8.2.1 AC Di stribut ion - 3.8.2.1 Nomenc l a tu re d i f fe rence s a re cove red in systems difference analysis , t ra i n ing. 3.8.2.3 DC Distribution 3.8.2.3 The differences in the DC distribution requi rements a re the bus designa tion rer.!ecting Unit 2 buses and two inverters operable. No operationa l impact. 4.8.2.3.2 DC Surveillance 4.8.2.3.2 Changes in surveillance requ!rements w!1Il Requirements pose no operational problems since rou-tine testing will be done in accordance, with approved procedures and posteo schedules provided by the Senior Engineer, i 185 i __ 1.
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DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS I AND 2 DirrERENCE ANALYSIS SYSTEM / COMPONENT Technical $gpcifications Safety Unit 1 Unit 2 Related Corments 3.11.2.5 Cas Storage Tanks 3.11.2.5 The bases for the gaseous waste storage tanks are the same. The actual wording 4.11.2.5.1 Surveillance Requi rements 4.11.2.5.1 reflects the dirrerences in system de-sign which are addressed in the indi-vidual systems dirrerence analysis. Changes in surveillance requi rements pose no operational problems. All surveillance testing is done IAW j posted schedules and procedures. 3/4 1.2 Boration System 3/4 1.2 The actual wording or the Tech. Spec. Bases reflects the dirrerence in system design which are addressed in the individual system dirrerences analysis. 3/4 1.3 Movable Control 3/4 1.3
- The bases for the movable control as-Assemblies (Bases) semblies has the same intent. The dirrerence in wording reflects the dirrerence in system design which are addressed in the di rrerence ana l-ysis. Operator training and use of approved procedures should preclude ,
chances or operational erors. 3/4 2.1 Axial Flux Di rrerence 3/4 2.1 The intent for the AFD Tech. Specs, a re (Bases) the same. The actual wording reflects the dirrerences in system design which are addressed in the dirrerence analysis. 3/4 2.2 FN H and FQ2 3/4 2.2 The change in the bases for hot channel factors reflects dirrerent engineering evaluations. These will be covered under Tech. Spec. dirrerence analysis. 3/4 3.3.10 Radioactive Caseous 3/4.3.3.10 The intent of the effluent instrumentation Erriuent instrumentation (Bases) bases a re the same. The actual wording , rorlects the dirrerence in system design. This will be taught in system dirrorence, t ra i n i ng. 187
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, .p .tm3 DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS ,
SYSTEM / COMPONENT Technical Sancificatiqns ! Safety Unit 1 Unit 2 Related Comments 3/4.4.1 Reactor Coulant' Loops 3/4.4.1 The intents of the bases for reactor (Bases) coolant loops a re the same. D i f fe r-ences in engineering evaluations die-tate specific differences which will be addressed by approved procedures. 3/4.4.6.2 Opera t iona l Leakage 3/4.4.6.2 Bases ror operationci leakage are the same. The only difference is in the p re ssu re limitation change which will / pose no operaticasi related problems. 3/4.4.9 Pressure /Temperatura 3/4.4.9 The bases for the pressure / temper-Limits (Bases) ature limits serve the same intent. The difference in wording is caused by system differences on which the operators will be trained. Due to this and the fact that tha pressure / temperature will be mal stained by p rocedu ro, there should be no cperational probiens. Table B 3/h.4.7 Table B 3/4.4.1 Table 3/4.4.1 and figurs 3/4.4-2 a re different due to system design dir-
- Fiqure B 3/4.4.2 Figure B 3/4.4.2 fe rence s. Operators will be trained on these dif ferences to preclude any operational problems.
3/4.5.4 Boron injection System Due to system design there is no BIT (Bases) on Unit 2. This should pose no problems due to operator training on system differences. 3/4.6.1.4 internal Pre s su re 3/4.6.1.4 internal Pressure The base's for the internal p ressure/a i r Ai r Temperature Ai r Temperature temperature serve the same intent. The actual wording reflects differences in 3/4.6.1.6 Conta inment St ructura l system design. The operator training integrity and use of approved procedures will precluda operationa l e rro rs. l 4 188
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k DUQUESNE LIGHT COMPANY [V$ BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEH/ COMPONENT Technical Specifications Safety Unit 1 Unit 2 Related Comments 3/4.7.1 Safety Va lves 3/4.7.1 Safety Valves The intent of the safety valves Tech. Spec. bases are the same. Specific numbers reflect system differences which will be addressed in systems d i f fe rence ana lys i s. 3/4.7.2 Steam Generator 3/4.7.2 Humbe r d i f fe rence s re f l ec t d i f fe r- . Pressure / Tempe ra ture ences in system design. Ope ra to rs , ) Limitation Bases will be trained on these differences. This will prec lude ope ra t iona l . e rro rs. 3/4.7.14 fi re Suppression The bases wording reflects system de-Systems (Basos) sign differences and use of approved procedures will preclude operationa i 3/4 7.15 Fi re Sbppression Syst was errors. Environmental Tech. Spec. deleted 3/4 7.16 Terrestrial Ecological BVPS-2 Tech. Spec. may also be deleted af ter severa l year, of data Survey severa l yea rs af ter sta rtup i f no revealed no ecological damage, e damage is observed. 3/4 10.6 Position Indication The dif ference in Tech. Specs. re flects , System Shutdown differences in system design. Ope ra to r training on this system difference will
. preclude cny operational error.
5.2 Containment Configuration 5.2 The specifications on containment con-figuration and pa rameters a re dif ferent " 5.2.2 Design Pressure and 5.2.2 due to design differences. These dir-Tempe ra tu re forences will be addressed during system di fferences tra ining. T e 189 t
D ' O t' DUQUESNE LICHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 U, 2 DIFFERENCE ANALYSIS l SYSTEM / COMPONENT Technical Specifications 1 4
- Safety Unit ( Urti t 2 Related Cogggnt s
- 5.3.2 Control Rod Asseabiles 5.3.2 The following design feature Tocht
); Specs. rer16 ct dif ferences in spect ric 5.5.2 Volume 5.5.2 Volume design of co690nents. These dirrerences 1 will be addret csd in system dirrerence. I 5.6.1 criticality 5.6.1 critica lity t ra i n i ng. Apg roved procedures will preclude opera :lonal error. 5.6.2 Dra inage 5.6.2 Dra inage l 5.6.3 capacity 5.6.3 canacity . I _. *A~ 1 4 e i ( . 4 i - 4 I L e l . l 190 4
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DUQUESNE LIGHT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 ' DIFFERENCE ANALYSIS SYSTEM /COMPnNENT FSAR Accident Analyset Safety Unit 1 Unit 2 abala ted Cgsments 11artun of an inactiva loo 2 Terminated by PR high trip Terminated by P-8 Unit 2 uses more credible termination criteria. toss of Electrical Load Terminated by PZR high pressure Terminated by PIR bigh Yes Unit 2 uses more credible pressure or Overtemperature termina t ion cri teria. ,N_)
. Delta-T Lgss or_NoJma1 Feed Assumes MDAfW delivers to 2 S/G's Assumes MDAFW delivers to 3 Yes Unit 2 a ssumes a mo re rea l i st ic S/G's approach to the analyses.
Excessive Heat Removal - FW Maifunction _ Yes No significant differences. Excessive Load increase - >
$ team flow i nc rea se Yes No signi ficant di fferences.
loss of Offsite Pawgf Assumes immediate Rx trip Ascumes trip on low-low S/G Yes Unit 2 uses a more conservative level approach based on a trip initiated by RPS. Turnine-Generator Accidents Reactor will trip on a turbine Reactar will trip on turbine Yes Significant setpoint dif ference but trip when power is above 10% trip when power is above 70% no operationa l di f ference. ( P-9 ) , ( P-9 ) . e 192
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f ( v v DUQUESNE LIGHT COMPANY V BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT _LSAR Accident Analyseg Safety Unit 1 Unit 2 Related Comments Accidental Main Steam Dep res su ri za t i on Yes No significant differences. Accidental Depressurization of RCQ Yes No significant differences. , J yourious Si at Power Assumes the BIT i s a t 20,000 ppe. Unit 2 does not have a BIT. uoit 1 FSAR is not updated to new Assumes 2000 ppa injected. Bli conditions. Luel Handlino Accidentt , Unit 1 does not .take credit for Unit 2 takes credit for the Yes No operational impact. Difference radiation monitors isolating isolation of containment. a re in assumptions, containment. Analysis for Fuel Fuel Handling Accident if Building and Containeent are the hnalyzed from the fuel same. Building only. Llquid Bad Releases Assumes negligible release. Assumes enti re RWST reacpeu Yes Loses below 10 CFR 20 in both Units, the river. Gaseotis Rad Release) Assumes GW Storage Tank or VOT Assumes CW Storage Tank or Yes Both yield small doses compared rupture (VCT most limiting). inlet line to cha rcoal delay to 10 CFR 100 criteria, beds rupture (!nlet line most Ismiting). SGTR Yes Unit 2 has more conservative ODC's ' but the end result is the saem, less than 10 CFR 100 limits. ,
. 193
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f/m d x> DUQUESNE LIGHT COMPANY v BEAVER VALLEY PLANF UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT FSAR Accident Analyses Safety Unit 1 Unit ? Related Comments Ma_ lor Second3 rv Pipe Ruotstres Ana lyzes for 1.4 f t squared and Analyzes for 1.4 f t squared Yes Unit 2 S/G's have integral flow and 4.6 ft squa red breaks, breaks only. Never experiences restrictorc, therefore, no upsteam a significant re tu rn to powe r. break it postulated. A spect ruF. o f sma l l e r b rea ks were considered. Ma.jor Ma in Feed _ Pipe e _Rygiures Assumes PZR safeties open in Assume PZR cafeties lift in Yes Unit 2 assumes AFW is delivered lo approximately 20 seconds and approximately 2500 seconds approximately 7 minutes. Unit 1 PZR goes solid in approximately with PZR solid (never goos approximately 15 minutes. 400 seconds solid if Loop is assumed) Unit 2 also uses cavitation venturis to limit AFW lost to the break to 310 gpe. Rod Election Yes No significant differences RCP Locked Rotor , Unit 1 FSAR analyzes 3 cases; Unit 2 FSAR analyzes 2 cases; Yes End results arc the same; Condition 3 loop 3 loop , IV and 10 CFR 100 limits are not 2 loop (unisolated) 2 loop exceeded. 2 loop ( isolated) Imprope r Fuel Loadinq Yes No significant differences Complote Loss of Flow Accident Yes Same cases as analyzed for locked rotor. No signi ficant di fferences , Siggle RCCA Wi thd rawa l at Powe r . Yes No significant differences 194
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Cs _,./ DUQUESNE LICitT COMPANY BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS 5YSTEM/ COMPONENT FSAR Accident Analy131 Safety Unit 1 Unit 2 Related Comments LOCA Worst case small break analyses Worst case small break Yes Unit 2 uses better modeling and analytes is 6"; the core analysis is 3"; the core never updated computer programs, comple+ely uncovers. completely uncovers for all cases up to 6". 8" bypass line severence analyzed, sicultaneous Tc j
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and Th break. Isolated loop break is analyzed. Analyses addressed by Unit 2 FSAR only: Steam Pressure Regulator Failure or Other Causino a Decreasgd Steam Flow Yes Bounded by turbine trip anlysis, inadvertent MSIV Closurg Yes Bounded by turbine trip analysis. Loss of Condensor Vacuum - lurb[pe Trio Yes Bounded by turbine trip analysis RCP Shaf t Break Yes Condition IV - bounded by shaft seizure accident 9 e 195 b
3 l e r' > DUQUESNE LIGHT COMPANY i BEAVER VALLEY PLANT UNITS 1 AND 2 DIFFERENCE ANALYSIS SYSTEM / COMPONENT FSAR Accident Analyses Safety Unit 1 Unit 2 Related Comments Small Prima ry Pipe Brea'k Outside Containment-Yes Complete letdown line severence (160 gpm) t rolgted by operator action at
. 15 minutes ,
SLCRS reduces radiologica l - consequences 1 8 9 4 9 6 196
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