ML20216G517
| ML20216G517 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom, Limerick  |
| Issue date: | 09/04/1997 |
| From: | Padovan L NRC (Affiliation Not Assigned) |
| To: | NRC (Affiliation Not Assigned) |
| References | |
| NUDOCS 9709150211 | |
| Download: ML20216G517 (42) | |
Text
_. . . .-- -~
y p.=:g c>c1AN bt 3 UNITED STATES [M~J7 278 j
- NUCLEAR REGULATORY COMMISSION M .1C2 o WASHINGTON, D.C. 30e464001
.....* September 4, 1997 LICENSEE: PECO Energy Company (PECO Energy)
FACILITY: Peach Bottom Atomic Power Station, Units 2 and 3, and Limerick Generating Station Units 1 and 2
SUBJECT:
MEETING WITH SENIOR PECO ENERGY MANAGEMENT AND STAFF TO DISCUSS THERMO-LAG ISSUES AT PEACH BOTTOM AND LIMERICK On-August 5, 1997, the NRC staff met with PECO Energy representatives at the NRC Headquarters offices to discuss PECO Energy's Thermo-Lag corrective actions at Peach Bottom'and Limerick. The table below shows the licensee's Thermo-Lag corrective actions status.
Plant I
% of Engineering % of Engineering % of Design Work Design Work Modifications Complete in-1997 Complete -in 1998 Complete in 1998 Peach Bottom 74 96 90% Unit 2 85% Unit 3 Limerick 99 100% Unit 1 71% Unit 2 Peach Bottom PECO Energy stated that the Peach Bottom safe shutdown reanalysis eliminated the need for approximately 65% of the Thermo-Lag fire barriers. PECO Energy expects to complete the last of the Peach Bottom Units 2 & 3 modifications during the Unit 3 fall 1999 refueling outage. Corrective actions include:
Upgrading structural walls to a 3-hour fire rating (134 barriers, 2,100 penetrating items, and.30 fire doors).
- Rerouting 34 offsite power control circuits.
Upgrading or replacing about 1,600 feet of Thermo-Lag on raceways.
The staff plans visit Peach Bottom in the fall of 1997 to walkdown areas where the licensee requested Appendix R exemptions, f
DFm\\
NRC RLE ggggg egpy
- r188u une PDR p
11!! R 5.Ill
Limerick The licensee stated that a-Limerick safe shutdown reanalysis eliminated the need for about 55% of the Thermo-Lag fire barriers. PECO Energy expects to complete the remaining Limerick Unit 2 modifications during the spring 1999 refueling outage. Corrective actions include:
- Installing or modifying 10 main steam relief valve remote control circuits per unit.
- Modifying or installing 13 residual heat removal local control circuits per unit.
- Rerouting 21 circuits to eliminate the need for Thermo-Lag.
- Upgrading or replacing about 2,000 feet of Thermo-Lag on raceways.
The staff concluded that the licensee is making reasonable progress towards resolving Thermo-Lag issues, based on the information they provided at this ,
meeting.
/S/
L. Mark Padovan, Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket Nos. 50-277/278 50-352/353
Enclosures:
- 1. List of Attendees
- 2. Licensee's Handouts cc w/encls: See next page QlSTRIBUTII)B Hard Copy w/ Enclosure I and 2 Docket File PSwetland, RGN-I OGC PUBLIC PDI-2 Reading ACRS E-Mail w/ Enclosure 1 SCollins/FHiraglia LMarsh MPadovan M0'Brien WDean RZimmerman MSalley FRinaldt SWest JStolz BBoger LTran D dinot GHolahan TMartin BMcCabe OFFICE PDI-2/P4 () P /[A PDI-2/PK /) ML-2/D NAME MPadovab Mb'Brien FRinaf k3k DATE 4/d/97 M/h97 0$ )f97 09/697 0FFICIAL RECORD COPY THERMO.MTG
/ DOCUMENT NAME:
- s -
Limerick
- 4 The licensee. stated .that ~a Limerick' safe shuidown reanalysis eliminated the .
need for about 55% of the Thermo-Lag fire barriers. PECO Energy expects to :
complete the remaining Limerick Unit 2 modifications during the spring 1999- i refueling-outage. Corrective actions include:- i
- ' Installing or modifying 10 main steam relief valve remote control circuits per_ unit.
4 i
- -. Modifying or installing 13 residual heat removal local control circuits
- per unit.
. t
- - *: Rerouting 21 circuits to eliminate the need for Thermo-Lag.
. .- Upgrading or replacing about 2,000 feet of Thermo-Lag on. raceways.
. The staff concluded that the licensee is making reasonable progress towards resolving Thermo-Lag issues, based on the.information they provided at this meeting.
64:
L. Mark Padovan, Project Manager-Project Directorate I-2 Division of Reactor Projects - I/II
- Office of Nuclear Reactor Regulation
- Docket-Nos. 50-277/278 50-352/353 i
Enclosures:
- 1. List of-Attendees
. 2. Licensee's Handouts
- . cc w/encls: See next page-d '
1 :l .
5' 4
s y 4 %, e - qr .. >..-- 4 , -
,- ,,w-r- , - , , , , - , , , , - - , ,-e-,,. -- -
PECO Energy Company Peach Bottom Atomic Power Station, Units 2 and 3 Limerick Generating Station, Units 1 and 2 cc:
J. W. Durham, Sr., Esquire Chief-Division of Nuclear Safety Sr. V.P. & General Counsel PA Dept. of PECO Energy Company Environmental Resources 2301 Market Street, S26-1 P.O. Box 8469 Philadelphia, PA 19101 Harrisburg, PA 17105-8469 PECO Energy Company ATTN: Mr. T. N. Mitchell, Vice President Board of Supervisors Peach Bottom Atomic Power Station Peach Bottom Township 1848 Lay Road R. D. fl Delta, PA 17314 Delta, PA 17314 PECO Energy Company Public Service Commission of Maryland ATTN: Regulatory Engineer, A4-55 Engineering Division Peach Bottom Atomic Power Station Chief Engineer 1848 Lay Road 6 St. Paul Centre Delta, PA 17314 Baltimore, MD 21202-6806 Resident Inspector Mr. Richard McLean U.S. Nuclear Regulatory Commission Power Plant and Environmental Peach Bottom Atomic Power Station Review Division P.O. Box 399 Department of Natural Resources Delta, PA 17314 B-3, Tawes State Office Building Annapolis, MD 21401 Regional Administrator, Region !
U.S. Nuclear Regulatory Commission Manager - Limerick Licensing, 62A-1 475 Allendale Road PECO Cnergy Com1any King of Prussia, PA 19406 965 Chesterbroot Boulevard Wayne, PA 19087-5691 Mr. Roland Fletcher Department of Environment Mr. Walter G. MacFarland, Vice President 201 West Preston Street Limerick Generating Station Baltimore, MD 21201 P.O. Box A Sanatoga, PA 19464 A. F. Kirby, III External Operations - Nuclear Plant Manager Delmarva Power & Light Company Limerick Generating Station P.O. Box 231 P.O. Box A Wilmington, DE 19899 Sanatoga, PA 19464 Chairman Board of Supervisors of Limerick Township 646 West Ridge Pike Linfield, PA 19468
'e
-l 't r
PECO Energy Company - Peach Botton Atomic Power Station,
- Units 2 and 3
- Limerick Generating Station.
Units I and 2 i-I Director - Site Support Services Senior Resident Inspector
-Limerick Generating Station U.S. Nuclear Regulatory Commission P.O. Box A Limerick Generating Station Sanatoga, PA 19464 P.O. Box 596 Pottstown, PA 19464 Manager --Experience Assessment library Limerick Generating Station U.S. Nuclear Regulatory Commission P.O. Box A Region I Sanatoga, PA 19464 475 Allendale Road King of Prussia, PA 19406 Senior Manager - Operations Dr. Judith Johnsrud Limerick Generating Station National Energy Committee P.O. Box A Sierra Club Sanatoga, PA 19464 433 Orlando Avenue State College, PA 16803 Director - Site Engineering Manager-Peach Bottom Licensing Limerick Generating Station PECO Energy Company
- P.O. Box A Nuclear Group Headquarters Sanatoga, PA 19464 Correspondence Control Desk P.O. Box No. 195 Manager-Business & Co-owner Affairs Wayne, PA 19087-0195 Public Service Electric and Gas Company Mr. George A. Hunger, Jr.
P.O. Box 236 Director-Licensing -MC 62A-1 j_ Hancocks Bridge, NJ 08038-0236 PECO Energy Company Nuclear Group Headquarters PECO Energy Company Correspondence Control Desk Plant Manager P.O. Box No. 195
, Peach Botton Atomic Power Station Wayne, PA 19087-0195 1848. Lay Road Delta, PA 17314
-Manager-Peach Bottom Licensing-
-PECO Energy Company Nuclear Group Headquarters
- Correspondence Control Desk P.O. Box 195 Wa g., PA 19087-0195
LIST OF ATTENDEES THERMO-LAG ISSUE RESOLUTION PEACH BOTTON ATOMIC POWER STATION. UNITS 2 AND 3 LIMERICK GENERATING STATION. UNITS 1 AND 2 AUGUST 5. 1997 88HE ORGANIZATION Mark Padovan NRC/NRR Daniele Oudinot NRC/NRR Linh Tran NRC/NRR Steve West NRC/NRR Gary Holahan NRC/NRR Frank Rinaldi NRC/NRR Alan Marie PECO Energy Gallen Spinka PECO Energy
. John Cotton PECO Energy George Beck PECO Energy John Davenport PECO Energy
- Charles Bruce PECO Energy John Hufnagel PECO Energy Christopher Pragman PECO Energy John Struys PECO Energy David Neff PECO Energy Frederick Emerson NEI i
Enclosure 1 L
isi-.g . ._. , .- , _
w 4 -. - . -
l Thermo-Lag Resolution Schedule Review Presented To: The U. S. Nuclear Regulatory Commission Presented By: PECO Energy Company Limerick Generating Station
_ Peach Bottom Atomic Power Station Presenters:
J. B. Cotton, Vice President, Station Support G. J. Beck, Engineering Programs Section Manager A. J. Marie, PSA Branch Manager G. L. Spinka, Thermo-Lag Reduction Project Manager i Attendees:
! J. G. Hufnagel Jr., Branch Manager, Licensing j D. B. Neff, Licensing J. D. Struys, LGS Modification Lead Engineer J. K. Davenport, PBAPS Modification Project Manager C. D. Bruce, Fire Protection Program Manager i C. J. Pragman, Safe Shutdown Program Manager I
l Enclosure 2
Purpose m Review PECO Energy's Thermo-Lag
' Resolution For LGS & PBAPS :
Strategy 4 Accomplishments To Date Schedule l
2 of 35
Purpose l
I m Both LGS & PBAPS Have Significant Quantities of Thermo-Lag Resolution Schedule Committed to in 1995 Aggressive Schedule Given the Quantity of Work Associated with Our Resolution Strategy 4
Consistent with Other Plants with Similar Quantities of Thermo-Lag m As Presented in the April 1997 Meeting Accomplished Significant Progress in Our Analysis and j Conceptual Design Work Station Modification Work was in Early Stages of Detailed i Engineering and Planning
- 3of35
i Purpose
)
m Since April,1997 i
Progressed in Our Detailed Modification Plans Accelerated Work Where Appropriate m OurPresentation Will:
Highlight the Significant Progress PECO Energy has Made Toward P<esolution of the Thermo-Lag Issue Provide Confidence that Resolution is Within Our Committed Schedule l Address the Nine NRC Questions Forwarded in July u . ,s
2 . .
Highlights -
- _ i
~
m GL 92-08: Thermo-Lag 330-1 Fire Barriers Are Inoperable
- Affected 1.75 Miles of Thermo-Lag in Various Configurations at PBAPS & LGS t
To Ensure Plant Safety Interim Compensatory Measures are in i Place n Strong Headquarters and Station Sponsorship for '
Resolution a Resolution Strategy (Est.S17.5 Million)
Fire Safe Shutdown (FSSD) and Supporting Engineering Analyses to Reduce Dependence on Thermo-Lag i 25 Modifications to Attain Compliance Configuration. Major i
Modifications Include
> Raceway Encapsulations l
> PBAPS: Upgrade Walls to Fire Barriers
> LGS: Control Stations
- RHR & MSRV (Depressurization) .
5 of 35
~ Highlights a Steps Taken to Expedite Resolution StaffAugmentation Combining Engineering Efforts Between Stations :
Work schedules Integrated with Operating / Refueling Plan Advanced Preparation of Unit Outage Modifications (Ready to Work) Enabling Installation in Appropriate Forced Outage u Progress Toward Resolution Assumes NRC Acceptance of PBAPS Exemption Request !
Engineering: 98% Complete in 1998 (LGS 99% , PBAPS 96%) ;
Station Modifications - Percent Complete in 1998:
> LGS 1: 100%, LGS 2: 71% PBAPS 2: 90%, PBAPS 3: 85 %
- PBAPS U2 Complete Except Wall Upgrades
- m Achieved Significant Reduction in Required Raceway Encapsulations FSSD Methodology Changes, Plant Modifications, Operator Actions 6 of35
'~
Challenges Changing Environment a Fire Barrier Material Test Protocol Not Available Until GL 86-10 Supplement 1, Issued (3/94)
Tested Materials Not Available Until 1996 i a NRC Approved Method for Resolving Thermo-Lag Fire Barrier Issues (6/94)
- a Thermo-Lag Issues Emerging Over Several Years Thermo-Lag Material Qualification / Composition (12/94)
Material Combustibility (5/95) l Flame Spread (8/95)
! a Availability of a Test Methodology for Determination of Ampacity Derating Factors (10/95) i_
7of35
Resolution Strategy
~
Magnitude of the Issue a GL 92-08: Thermo-Lag 330-1 Fire Barriers Are Inoperable; t To Ensure Safety Compensatory Measures are in Place .
Scope of Encapsulated Raceways at LGS
> Approximately 4,800 Linear Feet c .
! > 1 & 3-Hour Barners
- > Tray, Conduit, Junction Boxes and Gutter
! Scope of Encapsulated Raceways at PBAPS l
> Approximately 4,400 Linear Feet
]
> 3-Hour Barriers
> Conduit and Junction Boxes
!~
Resolution Strategy .
Ensure Safety & Cost Effectively Resolve The Issue l
_ i a Integrated. Project Using a Common Approach for Resolution at LGS and PBAPS 4 m Key Elements of the Resolution Approach (Developed 1993) l Reduce Reliance on Raceway Encapsulations f
! > FSSD Re-Analysis (1994-96)
> Extensive Iterations Required to Determine Acceptable Balanced Solutions
> Enhance Fire Protection Program Documentation IPEEE Fire Risk Analyses (LGS 6/95, PBAPS 5/96)
! > Integrated to Ensure Safety and Increase Efficiency 9 0f 35
Resolution Strategy Ensure Safety & Cost Effectively Resolve The Issue a Key Elements of the Resolution Approach (Continued)
Fire Barrier Assembly Configuration Evaluations (1993-97)
> FSSD Reanalysis is a Predecessor to the Identification of Assemblies (LGS 10/95; PBAPS 3/96)
> Thermo-Lag Assembly Qualification for 1-Hour Assemblies
- > Alternate Fire Barrier Material Evaluations for 1 & 3-Hour '
Barriers i
i
! Participation In Industry Programs
>~ Support Industry Approaches and Stay Current with the Industry Developments
! 1 10 of 35 i
Resolution Strategy
~
y Sponsorship and Schedule m PECO Energy Management Support VP Station Support, VP LGS, VP PBAPS Sponsors
- > Analyses - Director of Nuclear Engineering
- - Engineering Branch (Discipline) Managers
, > Licensing - Director of Licensing l > Station Interface - Director Site Support Services l - Analyses: Operations, System Managers
- Modifications: Project Managers, Design Engineering l m Schedule For Full Regulatory Compliaime Submitted via
- GL 92-08 RAI Responses (8/95)
Based on Unit Outages Being Required for Modification Installation & Testing
- > LGS: Unit 2 Outage, April 1999
> PBAPS: Unit 3 Outage, October 1999
)
11 of 35 j
- ~ Accomplishments Safe Shutdown Re-Analysis i
)
a Revised Safe Shutdown Configuration Identified Peer Reviews on Revised Methodology (LGS 10/94; PBAPS 1
11/95) i Manual Actions Deemed Reasonable by Operations (LGS 6/95; PBAPS 11/95) l
) Cables Requiring Protection are Known (LGS 10/95; PBAPS 3/96) j Modifications to Support Revised FSSD Methodology in Design (LGS 6/96; PBAPS 5/96) u Analyses Complete
- FSSD Method Logics, System Logics, Flow Path, Cable Selection, Hi/ Low Pressure, Associated Circuit, Combustible Loading, LGS Structural Steel Analyses 12 of 35
h _ _
Accomplishments
~
l Therrao-Lag Issues
! ~
m Composition Verified Using NEI Composition Testing Program a Thermo Lag Combustibility Updated / Improved Combustible Loading Analyses Structural Steel Survivability Analyses u Ampacity Derating Factors Derived Derived for AllInstalled Assemblies
> Bounded By Industry Testmg or,
> Heat Transfer Analyses Methodology a Raceway Encapsulations 1-Hour Thermo-Lag 330-1 Fire Barrier Upgrades 4
- Have Established Design Requirements
- Input into NEI Test Program
- - Evaluations Using NEI & Industry Test Results and i
- PECO Energy Specific Testing
> Barrier Modifications in Final Design 13 of 35 ;
'~
Accomplishments
! Thermo-Lag Issues a 1 & 3-Hour Alternate Material Barriers 1 Alternate Materials with Sufficient Testing Bounding PECO Configurations Not Available Until 1996 t Florida Power Corporation - Shared Mecatiss Testing
> Tested Gutter Wireway
. Observed Installation of Other Fire Barrier Materials
> Darmat IGv1-1 & Mecatiss Received Material Installation Presentations by 4 Manufacturers Evaluated Tested Configurations by Various Manufacturers l > Bound PECO Configurations l
1 Material & Installation Estimates Obtained from Manufacturers Modification Final Design Initiated 14 of 35
Accomplishments Participation in Industry Programs
- i
~
I m XEI Thermo-Lag 330-1 Test Program Provided Input for Configurations Tested :
l m XEI Application Guide Pilot Program Derived a Methodology to Use the Application Guide t
Presented to NRC December 1994 !
- a NEI Thermo-Lag Composition Testing i j Tested Material Samples from All Units
- a NEI Fire Protection Working Group Director of Licensing
- a Florida Power Corporation - Shared Mecatiss Testing Tested Gutter Wireway in a Shared Test
! a Witness Installation of Other Fire Barrier Materials I
Darmat KM-1 & Mecatiss i !
i i 15 0f 35 !,
Remaining Analysis Work Complete in 1997
~
l
- a Application of Ampacity Derating Factors to Encapsulated Cables (Initiated) l u Time Line Analyses & Emergency Lighting Installation Locations (35% Complete)
Confirmation of Existing Lighting Configuration (Complete)
- i m Electrical Breaker / Fuse Coordination Review (Initiated) -
a PBAPS Structural Steel Survivability Analysis (90%
Complete) 16 of 35 1
LGS Modification Work Summary -
m Unit 1 & 2, MSRV Remote Control with Reactor and Suppression Pool Indication.
Per Unit, Modify / Install 10 Circuits, Install 265 Feet of Conduit, 650 Feet of Cable, & 9 Penetrations l
Install Accumulators on 3 MSRVs with Piping in Drywell ;
I Outage work (Operations /ALARA)
> Enhance Instrument Gas Supply to 3 MSRVs. Primary
- Containment /Drywell Work to Add Accumulators, Check Valves and Piping. This Area is Not Accessible at Power.
Forced Outage Requirements l > Drywell Entry Required. Physical Work and Testing Estimated l at 15 Shifts @ 10 hr/ Shift
> Engineering Walkdown for Unit I was Performed 6/97 During L a Forced Outage.
17 of 35
LGS Modification Work
~
Summary m Unit 1 & 2, Enhance RHR Local Control Per Unit, Modify Control Circuits for 6 Valves, Install 2 Control ,
Stations, Modify / Install 13 Circuits, Install 85 Feet of Conduit, &
Modify 6 MCC Buckets Outage Work (Operations Constraint)
> Unit Outage: Final Tie-in and Testing for 2 Valves which Provide Isolation Between Reactor Vessel Pressure and the Low Pressure RHR Piping. Technical Specifications Require !
- Testing During Shutdown. i
> System Outage: Final Tie-in and Testing for 4 Valves.
Forced Outage Requirements
> This Quantity of Physical Work and Testing is Estimated at 72 Hours. Contract Craft Require 1 Week for Mobilization &
Task Specific Training.
18 0f 35
LGS Modification Work Summary i
m Unit 1 & 2, Cable Reroutes to Eliminate Encapsulations Reroute 21 Circuits. Most Tie-ins Performed During System
- Outages
> 708 Feet of Conduit,3720 Feet of Cable, & 11 Penetrations.
Reroute of Safeguard Bus Bkr. Control Cables (Operations)
> Reroute Breaker Control Cables to Improve Post Fire Availability of Off-Site Power.
Outage Work
> Preliminary Evaluation: Final Tie-in and Testing of the Safeguard Bus Feeder Breaker Control Cables. Risk of a Unit Trip.
j Forced Outage Requirements
> Quantity of Physical Work & Testing,8-12 Hours. If Contract
- Craft are Used, I Week for Mobilization & Task Speciric l Training.
1 19 of 35
LGS Modification Work Summary m Unit 1 & 2 Isolation of Fire Induced Circuit Faults Use of Fuses to Isolate Potentially Fire Damaged Portions of Control Circuits Modify 9 Circuits, Install 26 Fuses Safety-Related Circuits to be Modified During Appropriate System Outages
, a Unit 1: Improve Post Fire Availability of IB Diesel Ventilation l Avoid Potential Diesel Failure Due to Environment Heat-up Above Equipment Qualification Reroute 1 Circuit; Modify 3 Circuits, Install 6 Fuses Circuits to be Modified During Diesel Outage a FSSD Manual Actions Emergency Lighting Procedure Revisions 20 of 35
LGS Modification Work
~
! Summary a Upgrade Raceway Encapsulation 1 Hour Thermo-Lag Upgrade: 871 Feet 1 & 3 Hour Altemate Materials: 1060 Feet
- Required Thermo-Lag Removal 523 Feet (200 Feet After l Compliance Outage) l .
- t l ,
4 l
21 of 35
=
PBAPS Modification Work
~
Summary m Upgrade Structural Walls to 3-Hour Fire Barriers 86 Rooms,134 Barriers,2l00 Penetrating Items,70 HVAC Penetrations, & 30 Fire Doors a Outage Work (ALARA)
Plant Areas with I or Both Sides of the Wall in Areas of Higher Than Desired Radiation During Reactor Operation (>100 mr/hr)
Walkdown (3R11-1997)
> 35 Rooms,61 Barriers,800 Penetrating Items.
> Estimated 300 Man-hours.
Physical Work (3R12- 1999)
> 14 Rooms,15 Barriers,250 Penetrating Items.
22 cf 35
I PBAPS Modification Work _.
- Summary 4 -
a Upgrade Structural Walls to 3-Hour Fire Barriers (Continued)
- Forced Outage Requirements ;
- Walkdowns l Estimated 300 Man-hours. I t
Can be Conducted During a Forced Outage ofSufficient
- Duration.
- Physical Work '
Ready to Work 3/99. i Can be Performed During a Forced Outage of Sufficient l Duration. !
I I
PBAPS Modification Work ,
Summary a Reroute Off-Site Power Control Cable Out of Turbine 1 Building Improve Post Fire Off-Site Power Availability Cable Reroutes: 34 Circuits
\
- 400 Feet of Conduit /11,340 Feet of Cable
- a FSSD Manual Actions l
Emergency Lighting j Procedure Revisions m Raceway Encapsulation
- 1 Hour Thermo-Lag Upgrade
- 1348 Feet 3 Hour Alternate Materials: 235 Feet i
24 of 35
Schedule / Cost m Engineering Schedule Improvement Engineering Staff Augmentation by Outsourcing Tasks ;
> PBAPS: Upgrade Walls.
- Also, Reduced Outage Scope Through Re-Analysis.
l > LGS & PBAPS: Thermo-Lag Encapsulation Upgrades.
- Also, Combined LGS & PBAPS Scope for Efficiency.
- LGS & PBAPS: Alternate Material Encapsulations.
I
- Also, Combined LGS & PBAPS Scope for Efficiency.
a Unit Outage Modification Work Milestone: " Ready-To-Work" Enables Unit Outage Type Modification Work to be Performed if Appropriate Forced Outage Occurs Appropriate Forced Outages Will Be Used to Accelerate ALARA Restricted Engineering Walkdowns 1
i 25 of 35
LGS Engineering Budget
$3.07 Million Cost / Schedule 1
~
4Q98 3098 1% 1Q99
- jeg 1% 1993 1994 l 2098 1% 12%
1Q98 4%
l 12%
l
! ~
1995 21 %
- I l .
l l ,
- , c.
I 1997 1996 31 %
16%
a Engineering 81% Complete in 1997
_ m Engineering 99% Complete in 1998 l 26 of 35
LGS El Mod Installation Budget
$2.96 Million Cost / Schedule Unit 1 Mod Work 2097 3097 Complete 2% 4% 4Q97 4Q98 '
8%
l 19% .M1 fGzNhihk
- u. u me n, 1Q98 20 %
wg?h?(j:$?'et
-~,515~il: 7? !sl . "$
zg3p y . g; q,j .;_
__ .e. _ .
l ' -
i l
3Q98 U1 OTG & 2Q98 l 27%
20%
t l
i l m Modification Work 100% Complete in 1998 I
i 27 of 35
l LGS U2 Mod Installation Budget
$3.34 Million Cost / Schedule 1
i U2 Mod Work Complete s i
- \ 3Q97 4097 1Q98 U2 OTG & 2099 2% 4%
1 2097 2%
,f r !I l U1 OTG & 2098 11 M7,:
nr y 13 %
i 1Q99 l 21 %
i i
i i
j 3Q98 25 %
4098 25 %
j u Modification Work 71% Complete in 1998 j _
m 8% of Work is Scheduled for the 1999 Unit Outage i
i 28 of 35
} ._ . .- -
PBAPS Engineering Budget
~
$3.90 Million Cost / Schedule l
2099 IO99 1993 1% 1994 4
35%
a Engineering 74% Complete in 1997 m Engineering 96% Complete in 1998 29 of35
=
~
PBAPS U2 Mod Installation Budget
$2.18 Million Cost / Schedule Unit 2 Mod Work Complete OM& M Y
4097 2099 11 %
1Q99 4% 1Q98 4%
U2 OTG
& 4Q98
=
~
- a c: _
-A
- m. '
m
=.
2 m a Modification Work 90% complete in 1998 E 2% of the Work is Scheduled for the 1999 Unit Outage 30 of 35
l~ PBAPS U3 Mod Installittion Budget
$2.08 Million Cost / Schedule Unit 3 Mod Work Complete .
j U3 OTG & 4Q99 \ '
g 4gg7 2Q99 D
~ -l*{ig 1Q99 5% :; r 5% ,
i =
~
^
, U2 OTG .. ._
- 6
~
& 4Q98 tr f -- '
, ,m , -
2Q98 2a%
3 O 98 20% '
4 a Modification Work 85% complete in 1998 m 5% of the Work is Scheduled for the 1999 Unit Outage 31 of 35
V Open Resolution Issues LGS and PBAPS NRC Submittals
~~~
~
l m PBAPS & LGS Ampacity Derating Factor Determination Methodology Submitted March,1997 s PBAPS Appendix R Exemption Request Submitted May,1997 32 of 35
Open Resolution Issues
~
PBAPS Appendix R Exemption s Appendix R Exemption IllG.2.C: " Enclosure ofcable and equipment and associated non-safety circuits ofone redundant train in afire barrier having a 1-hour rating, In addition, fire detectors and an automaticfire suppression system shall be installed in thefire area. "
Fire Protection Defense in Depth Analyses Supports
> l-Hour Rated Barrier without Automatic Fire Suppression.
18 Fire Areas
- Includes 3 Fire Areas for Affirmation of Previously Granted Exemptions.
Affects 1100 Feet of Thermo-Lag Encapsulated Raceway
> Install Suppression or 3-Hour Rated Fire Barriers 33 of 35
Conclusion u
m Described PECO Energy's Thermo-Lag Resolution Approach Accomplishments to Date j Schedule and Costs for Remaining Work m Demonstrated That PECO Energy is Aggressively and Thoroughly Addressing the Issue i
Working To Do It Right the First Time 4
34 of 35 -
.a .
Conclusion m PECO Energy has Made SignificantImprovements in the Schedules to Accomplish the Work Augmenting Staff For Analyses and Modifications I ,
- Combining LGS and PBAPS Engineering Efforts to Gain Efficiencies lI Developed Aggressive Work Schedules Integrated with l System Outage and Refueling Outage Schedules Planning Work (Where Feasible) to Enable Use of Forced Outages of Sufficient Duration To Accelerate Outage Installation Work m PECO Energy Remains Committed to Our Schedule End Dates for Achieving Full Compliance 35 of 35 J