ML17272A238
| ML17272A238 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 12/18/1978 |
| From: | Cockrell R WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | Mattson R Office of Nuclear Reactor Regulation |
| References | |
| FOIA-80-587 EDM-RGC-78-356, NUDOCS 7901160102 | |
| Download: ML17272A238 (16) | |
Text
~"4T Washington Public Power Supply'System A JOINT OPERATING AGENCY l/ ~(1 l~
C
-T~
d~4 P. O. BOX 958 3000 GCO. WACHINCTON WAT RICHI.AND, WASHINCTON 99352
~
December 18, 1978 EDM-RGC-78-356 PHONC (509) 375 5000 Dr.
R. J. Mattson, Director Division of Systems Safety U. S. Nuclear Regulatory Commission Washington D.
C.
20555
Subject:
ATWS COST ESTIMATES-WPPSS NUCLEAR PROJECT NO.
2
Dear Dr. Mattson:
I and members of my staff appreciated the opportunity to meet with you and your staff in conjunc'tion with other industry representatives on December 6 to discuss ATWS cost estimates.
We are of the opinion that the exchange was very beneficial and provided a better understanding of the impact of various ATWS fixes for all concerned.
As a result of our involvement in the ATWS issue over the past several
- months, we have developed the attached cost estimates for various levels of system modifications to accommodate an ATWS event.
As we noted in our presentation to the ACRS Subcommittee on ATWS in October, we consider ATWS to be a Licensing issue and not a plant safety concern.
The attached cost estimates are based on our interpretation of what may be requested by the staff. to satisfy your concerns regarding ATWS.
The levels we have addressed include the 13 items contained in your November 15 letter to the Atomic Industrial Forum (Mr. John Ward, Chairman, Committee on Reactor Licensing and Safety).
We have not independently addressed each item of your letter, but have instead attempted to incorporate them into systems which cover a spectrum of fixes ranging from justification of the existing design to an ultra-conservative mitigation system per NUREG-0460.
All assumptions, definitions and the overall bases for cost estimates are included in the attachment.
Should you desire further information regarding our cost estimating
- methods, we would be pleased to discuss the subject with you, or to cooperate with the AIF in preparing an industry presentation on cost estimating methods.
7901160102
Dr.
R. J. Mattson Page Two December 18, 1978 EDM-RGC-78-356 We trust that the attached information will be of use to you in evalu-ating the costs of ATWS.
Should you have any questions regarding our transmittal, please contact me.
Very truly yours, RGC:GCS:ct Attachment R.
G.
COCKRELL
- Manager, Engineering Division cc:
John Ward, Chairman, AIF Committee on Reactor Licensing and Safety L. S. Sandlin,
- WPPSS, Manager Project Planning and Measurement
ATMS COST ESTIMATE FOR MiRP-2 This document summarizes the cos imoact for five levels of fixes
=or ATMS if applied to MPPSS Nuc;ear Projec Ho. 2.
Basic assumptions relating to the ATMS'fixes are '.dentified alorg with an out',ine of the
-:ve levels wh:ch provide the basis
-:or the cost estimate.
The five levels outlined def":ne a spec.rum of arbitrary and possible fixes ranging from justifying exist".'rg designs to an ultra-conservative'it'.ga
'.on sys"em design per NUREG-0460.
The outl";ne ':n no way '.mplies thai. what is '.nc'.ucted in each
~evel provides an opt",mum level of f-;x, or that the fix is necessary, i.e., the levels are frameworks from which to illus-trate potential costs and schedule impacts
,or the Mf(P-2 plant.
The costs provided are to.al costs which MPPSS estimates would incur for the various levels.
The total est'.mated cost for each level is divided into two categor'"'.es
- direct cos-;s and ot;ier cost Oirect costs include materials, insta'lation and A/E enginee. ina to ins all each fix.
They are engineering estimates not detailed con truciion estimates.
General Electr c's costs for materials and front-end engineer ng for each level of fix is included in the direct costs as materia,'s".
The other incremental costs include the following:
e Construction Management (unique to MHP-2) o Owner'.s Cost (startup and testing, safety and licensing, engineering, project management, quality assur ance, insurance, proper y taxes) o Contingency (on direct cost, construction management, owner's cost) o Escalation (on d:rec. cost, construction management, contingency) o Sales Tax (direct cost, escalation, contingency, cons ruction.
managemen-)
s Financing and.'nterest During Construction The total estimated cost does not nclude any costs associated with fuel, delay or replacement power, operation and ma.'ntenance, or system cleanup costs due to inadvertent trps of au omated s.andby liquid control systems.
A cost matrix is included to show where thirteen specific NRC items related to ATMS f'.xes are included
':n each level.
The specified NRC items.
are listed in the attachment to the november 15, 1978 letter from R. J. Hattson
{NRC) to 3. Mard (ALF).
KDC 12/'i2/73
Basic Assumptions for ATMS Fixes 1.
No other system failure other than the one causing ATWS for levels through 4.
- However, the initia.ing event may be a loss of offsite power.
2.
A two minute opera. or act'.on t;:me is used to manually start SLC pumps for level 3.
3.
Metweli temperatur e limitations are not exceeded for all levels.
0 4.
<~ax.'mum water temperature for proven quencher operation is not exceeded, i.e.,
no quencher test costs or levated temperatures or all levels.
6.
7.
Compl:ance with NUREG-0460, which assumes AT'AS is a design basis acciden
, requires the m":.tigation system to be safety grade-single failure p. oof, C":as LE power for level 5b.
The circuitry required for initiating ATMS fixes from Level 2
through 4, inclusive, are designed with the same reliability as the mechanical port on of the SLC system
!.e., not single-fa",ure proof.:
Compliance with NUREG-0460 (Level
- 5) requires the additional assumotions of a) failure of HPCS and b) 101 of NSRV failing to close.
Level 5a assumes that analyses will show the 300 gpm Automatic Boron Iniection System wil". mitigate the consequences of both of the above assumptions
~ evel 5b assumes that the 300 gpm AB1 may not mitigate "he consequ nces of these two ultra-conservative assumptions.
MNP-2 LEVEL OEFINITIONS Level 1:
'a ~
b.
C.
Justify Existing gesign Tighter operational limits on the condensate storage tank to allow for more than '.35,000 gallons minimum for RCIC/HPCS usage.
Some additional contro'.
room information (e.g.
alarms)
Engineering ana',ysis Level 2:
Imoroved Control - Alternate Reactor Shutdown System (ARSS) a.
C.
Two additional reactor low level and two additional reactor high pressure sensors o
the same auality as those used for the Reactor Protection Sys".em (RPS) but independent of RPS.
The additional
-:.nst: umentat-:.on vill ! initiate a Recirculation Pump Trip (RPT) using a one out o", trio Niice logic.
The RPT
';=- equivalent to the Mon ;:cello design.
ALAS Rod Insertion (ARI) wi":1 be initiated by the above circuitry to vent the a.'r scram heade!
using two additional solenoid valves.
ARI is qualif':ed to rEEE-279, i971 Level 3:
Level 2 P'.us Mitigation (Manual 86 gpm SLC) a.
b.
C.
d.
ARSS with Monticello RPT Two existing 43 gpm SLC pumps with a second suction line from the SLC tank and a second injection point (jet pump instrumen-tation 1.:ne) added.
The SLG pumps will be automatically provided with power from the emergency d"diesel after a loss of offsite power.
Switch will be changed to allow both pumps to start s multaneously.
Revision of procedures and training of operators for manual initiation of SLC pumps.
Feedwater pump trip initiated by ARSS.
Level 4:
Level 2 Plus Mit"gation (Automatic 86 gpm SLC) a 0 C.
d.
e.
ARSS with Monticel'.o RPT Two existing 43 gpm SLC pumps with a second suction line from
- he SLC tank and a second inject:on po nt (jet pump instru-mentation line) added.
The pumos will be automatically started by ARSS circ 'itry.
-eedwater oump tr'.p initiated by ARSS.
RCIC/HPCS initiated by ARSS.
Analysis for modi f'cation o, low level and low pr essure MSIV set points.
Level 5a:
Mitigation System - 300 gpm Automatic Boron Injection (ABI) System a.
c ~
d.
e.f.
Four addit:onal reactor low level and four additional high pressure sensors to orovice two redundant trains of auto-matic ',og'.c and satisfy NVREG-0460 criteria.
A RPT corno'lying with crit"ria of tel R~G-0460 will require additional trip coils to trip;OC breakers, wh'.ch i(ill cut power from both normal powe.
supply and the low frequency mo-or generators.
Four 150 gpm SLC pumps, 300 gpm per train, each pumo w th seoara.e suction l.ine from Si C tank.
The second injection po'nt (HPCS ',ine) will be as close to the reactor vessel as Oosslb~e.
~eedwater pump f'p initiated by ASS circuitry.
HPCSfRCIC initiate~ by A;~iS circu. ry.
ARilS 'Rod Inse&";on qualif',ed to IEE>>:-279, 1971 and initiated by ASS c.'rcuf try.
Level 5b: Level 5a with Additional High Pressure Makeup and Heat Sink a
~
C.
d.
Level Sa Soecial ATMS Makeup (SAM) equivalent to HPCS Suppression Poo'i Interim Cooling (SPIC) equivalent to additional RHR system along with heat sink.
Qiesel generators to supply emergency power for ABI, SAM, and SPIC.
ATv!S Cost Matrix The following table identifies where, by means of an (x), the cost of each NRC item is llsed in costing GU each cf the five levels of, ixes for ATMS.
NRC Items Level 2
A&iS F',xes (2)
Level 3
Level 4
Level 5
1 2
3 5
6 8
9 10 11 12 13 NA NA NA NA NA NA NA NA HA NA NA NA NA NA NA NA NA NA NA NA (1)
NRC items refers to the Items in the attachment to letter from R. J.
4!attson (HRC) to J.
Mard (A';"-), dated November 15, 1978.
(2)
The five levels of ASS ixes are outlined on the attached sheets.
ATWS Cost/Schedule Summar Level
- Oesian, Procure 5 Install Total Estimated Cost
- 5b 7-10 months 9-12 months 9 12 mont 18-24 months 36-42 mon hs 42-~8 months 0.5M 1.3M S
2.5M 5
4.0M S 29.4M
)150M
~Note e
Ho delay/downtime costs included for all of the above.
o "No delay/downtime costs
- included, however, instal'.ation costs assume installation is after lant startuo.
o All assume fix is applied to an as-built (or operating) plant.
e No operation/maintenance costs included for any of the above.
o iso costs included.or system cleanup due to inadvert nt trips of Automatic Standby Liquid Control Systems.
ASS MNP-2 Level 1
Surmarv FPC Code 10 Structures and Improvements 20 Peactor Plant Equipment 0 Turbo-Generator Units 40 Accessory Electrical Equipment 50 Misc.
Power Plant Equipmen" 60 Station Equipment and Switchyard 70 Distributable Directs A/E Engineering Design Total Direct Cost Totals S 55,000 45,000 60,000 160,000 Construction Management A/E Portion Owner Portion Owner's Cost Contingency Escalation Sales Tax Financing and Interest During Construction Total Estimated Cost 56,000 50,000 40,000 122,300 18,800 23,200 17,400 487,700 Excludes Fuel Costs 8 Replacement Power Excludes Opera ion and Maintenance Costs
ASS MNP-2 Level 2
~Soaaa:r FPC Code Totals 10 Structures and Improvements 20 Reactor Plant Equipment 30 :urbo-Generator L~nits
~TO Accessory E',ectrica'quipment 50 Risc.
Power Plant Equipment 60 Station Equipmen and Swtchyard 70 Oistributable Oirects A/E Engineering Design Total Direct Costs
$ 50,000 250,000 0 180,000 480,000 Construction management A/E Portion Owner Portion Owner's Cost Contingency Escalation Sales Tax Financ".'ng and Interest During Construction Total Est",'mated Cost 100,000 90,000 70,000 296,000 68,000 57,<00 67,100 1,228,500 Excludes Fuel Costs and Replacement Power Excludes Operation and Maintenance Costs ASS MNP-2 Level 3
SL'HOARY FPC Code Tota Is 10 Structures 5 Improvements 20 Peactor Plant Equipment 30 Turbo-Generator L~nits 40 Accessory Electrical
~quipment 50 Misc.
Power Plan. Equipment 60 Sta+":on Lquipmen". Switc,",yard 70 Ois:r-butab!e 0'.rects A 8
"=
.ngineer',ng Oesfcn Total 0 rect Cost S 350,000 250,000 0 360,000 960,000 Construction Management A 5 E Por+ion Owner Port-Ion Owner Cost Contingency Esca!at.'on Sa!es Tax Financing 8 Interest Ourino Construction Total Estimated Cos.
200,000 180,000 135,000 590,000 150 100
~ '00 14S,700 2, a<78,900 Excludes Fuel Cos s
5 Reol acement Power
=xcludes Operation 5 bia'ntenance Costs ATMS MNP-2
'v
~ 4" SUf~iARY FPC Code 10 Structures
& Improvements 20 Reac or Plan+ Equipment 30,urbo-Generator Limni.s 40 Accessory E',ec+rical Equipment 50 Risc.
Power Plane Equioment 60 Shat",'on Equipment
& Sw tchyard 70 Ois.r." utable Oirects A & E Engineering Tota'. Oirect Cost TOTALS
-0 400,000 600,000 600,000 1,600,000 Construction Management A & E Portion Owner Portion Owners Cos+'ontingency Escalation Sales Tax Financing
& Interest During Construction
,otal Estimated Cost 300,000 270,000 200,000 940,000 242,400
'.84,700 2<0,100 3,977,000 Excludes Fuel Costs
& Replacement Power Excludes Goer ation
& Maintenance Costs
- Scheduled Shutdown After Fuel Loading ATMS uNP-2 "Level 5a.
SOY>lARY FPC Code TOTALS 10 Structures 5 Imorovements 20 Reactor Plant Equ.pment 30 Turbo-Generator Units 40 Accessory Electrica:
Eouipment 50 Misc. Power P'.ant Equipment 60 Station Equipment 5 Switchyard 70 Oistributable Oirects A
u' Eng',neering Des.'gn Total Oirec Cos S
40,000 3,000,000 3,400,000 60,000 3 000 000 9,500,000 Construction Management A 8 E Portion Owner Por;i or, Owner Cost Contingency Escalation Sales ax F',nancing 8 Interest During Construction Total Es mated Cost 2,400,000 2,160,000 1,600,000 6,265;000 4,222,000 1,357,000 1,837,000 29,34',000 Excludes Fuel Costs 5 Replacement Power Excludes Ooeration 8 iNaintenance Costs
- Scheduled Snut"own after Fuel Loading ATMS 'ANP-2
~ ove'b*
SUl<l <ARY 10 Structures 8
Improvements 20 Reactor Plant Equipment 30 Turbo.-Generator L'nits Accessory E".ectr.'cal Equipment Misc.
Powe.
Plant Equipment Station Equipment A Switchyard Oistributable Oirects A 8 E Eng'neering
'3esign Total 0";rect Cos-TOTALS 7,345,000 30,000,000 1,423,00Q 235,000 13,100,000 52,103,000 Construction Management A
~~
"= Portion Owners Portion Owners Cost Contingency Escalation Sales Tax Financing 8 Interest during Construction Total Es imated Cost g,800,000 8,820,000 5,410,000 30,440,000 25,000,000 6,826,00Q
'.1,75o,000 150,155,000 Excludes Fuel Costs 8
Repl acement Power Excludes Operation 5 Maintenance Costs
- Scheduled Shutdown after Fuel Loading KQC 12/12/78
- U. S. GOVERNMENT PRINTING OFFICEI l97~0.978
~ ~
~
R.G. Cockrell, Mgr.
Engineering Division Wash.
Pub.
Power Supply Sys.
DATE OF OOCUMENT 12/18/78 LTR MEMO:
OATE RECEIVED 12/26/78 REPORT'SS:131 OTHER TO Roger J. Mattson, Director Division of Systems Safety ONRR ORIG CC:
OTHER.'CTION NECESSARY (g
CONCURRENCE P
CATE ANSWEREO NO ACTION NFCESSARY Q
COMMENT 0
SYI 1/10/79 CLASSIF OESCRIPTION, IMuu SF UnCIFHdieaI POST OFFICE REG,NO.'ILE CODE ATWS WPPSS No.
2 REFERREO TO GATE RECEIVEO EY GATE ATWS Cost Estimates-WPPSS Nuc. Project No.
2 ENCLOSURES'istributed to:
E.
Case R. Mattson D.
Bunch R. Fraley, ACRS P. Boehnert, ACR T. Novak (21)
V. Stello R. Tedesco REMARKS Return original yellow ticket and copy of incoming w/copy of reply to AnnHaikalis.'.
Schroeder S.
Hanauer M. Ernst B.J.Youngblood U. S. NUCLEAR REGULATORY COMMISSION A. Thadani RSB File Centra Docket F
NRC PDR MAIL CONTROL FORM le 79ox ~6o ~o2