ML14190A130
| ML14190A130 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 02/20/1992 |
| From: | Lo R Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9202280002 | |
| Download: ML14190A130 (35) | |
Text
February 20, 1992 Docket No. 50-261 DISTRIBUTION:
See next page LICENSEE: Carolina Power & Light Company (CP&L)
FACILITY: H.B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2
SUBJECT:
MEETING
SUMMARY
SAFETY INJECTION (SI) SYSTEM ISSUES The subject meeting was held on January 31, 1992, at the request of CP&L to provide an overall review of the issues related to the SI system. These issues include the SI pump "C" casing, the electrical loading capacities of the Emergency Diesel Generators, LOCA analysis and core margins and the recent changes in emergency operating procedures. The discussions followed closely to the topics outlined in the viewgraphs CP&L presented (Enclosure 1). is a list of the attendees.
Orignal signed by:
Ronnie Lo, Senior Project Manager Project Directorate II-1 Division of Reactor Projects -
I/II Office of Nuclear Reactor Regulation
Enclosures:
- 1. Meeting handout
- 2. List of Attendees cc w/enclosure:
See next page NA E R
d t dn_
DA 02/
92 02
/92 02///92_/
/
/
/
OFF AL RECO D COPY
/
FIL ME: ROBMTGSUM.MTS 9202280002 920220 PDR ADOCK 05000261 C,
t7 P
PDR LVj:
Lj Lj
-:- -'J Li 9 ?d
DISTRIBUTION LIST FOR ROBINSON MEETING
SUMMARY
DATED: January 31, 1992 Docket File NRC & Local PDRs PDII-1 RDG T. Murley/F. Miraglia J. Partlow S. Varga G. Lainas E. Adensam R..Lo P. Anderson OGC E. Jordan P.J.
Kang R. Jones L.W. Garner, RII ACRS(10)
J. Wechselberger, EDO 17-G-21 L Reyes, RII 260006
ENCLOSURE CAROLINA POWER AND LIGHT COMPANY ROBINSON NUCLEAR PROJECT TECHNICAL MEETING WITH USNRC REVIEW OF TECHNICAL AND MANAGEMENT ISSUES ASSOCIATED WITH THE SAFETY INJECTION SYSTEM JANUARY 31, 1992
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 OBJECTIVES TO PROVIDE AN INTEGRATED REVIEW OF TECHNICAL ISSUES AND MANAGEMENT ACTIONS ASSOCIATED WITH THE SI SYSTEM, INCLUDING:
LOCA ANALYSIS AND CORE MARGINS SI PUMP "C" CASING ELECTRICAL SYSTEM AND EMERGENCY DIESEL GENERATORS TO IDENTIFY CURRENT ISSUES AND FUTURE CONSIDERATIONS REGARDING:
THE CONTINUED OPERABILITY AND RELIABILITY OF THE SI SYSTEM THE MAINTENANCE OR IMPROVEMENT OF EXISTING MARGINS THE CONTINUED ABILITY OF THE SI SYSTEM TO MITIGATE ANALYZED OR POSTULATED EVENTS TO PROMOTE A MUTUAL UNDERSTANDING OF PAST AND CURRENT SI SYSTEM ISSUES
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 AGENDA OPENING REMARKS C. R. DIETZ OVERVIEW OF SI SYSTEM R. H. CHAMBERS REVIEW OF SI SYSTEM TIME LINE R. H. CHAMBERS CURRENT ISSUES AND FUTURE CONSIDERATIONS LOCA ANALYSIS T. B. CLEMENTS ELECTRICAL/EDGs G. E. ATTARIAN SI PUMP "C" R. H. CHAMBERS CONCLUDING REMARKS C. R. DIETZ
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 OVERVIEW OF SI SYSTEM ORIGINAL DESIGN CONCEPTS INSTALLATION OF THREE SI PUMPS; THIRD PUMP CONSIDERED AN INSTALLED SPARE PSAR/SAR SHOW ONE PUMP CAPABLE OF SATISFYING ECCS REQUIREMENTS LOCA CALCULATIONS SHOW ACCEPTABLE PEAK CLAD TEMPERATURES FOR THIS CONFIGURATION
-2zg00 R
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 OVERVIEW OF SI SYSTEM (CONTINUED)
EVOLUTION OF DESIGN CHANGES IN LICENSING AND ANALYSIS REQUIREMENTS ADDRESSED BY ADDITION OF AUTO START FEATURE TO SPARE SI PUMP ADDITION OF AUTO START FEATURE REQUIRES COMPLICATED ELECTRICAL SWITCHING PREVAILING SEPARATION AND INDEPENDENCE CRITERIA LESS RIGOROUS THAN CURRENT STANDARDS CERTAIN SCENARIOS NOT CONSIDERED CREDIBLE EVIDENCED BY DIFFERENCES BETWEEN LICENSED CONFIGURATIONS OF HBR2, GINNA, TURKEY POINT, INDIAN POINT
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 OVERVIEW OF SI SYSTEM (CONTINUED)
RECENT SYSTEM HISTORY (1987 TO PRESENT)
ECCS SWITCHOVER SINGLE FAILURE SCENARIOS EDGs AND ELECTRICAL DISTRIBUTION SYSTEM LOCA ANALYSIS AND CORE MARGINS SI PUMP "C" CASING CRACK CURRENT SYSTEM STATUS AND CONFIGURATION
LOOP 2 HOT LEG S86&
S INJECIION
-LT4 FT 948 SISI-867 8
6 864 868AHCVS-88 RiR81 85A 1 -96 3 4 853 936-2SI 86 4A S5I-877A3F 86 ACCUATR S<82 SI 86A SG-65 S 65 SI-65 FTE SI-875DD SI-75 S6-75 R9-7A4H
-443 EA X
N-7 SI-860A SI-8SI-661A Sg-861 0(
HIGHL L HEA C
LD LG RE I
C LATIO COTINMEN SU
480 VAC Electrical System To Span Bus To Generator & Main Trans.
Startu p T rans Aux.
TrTns.
12 17 7
020 4160V 4160V 4160V 4160V BUS #2 BUS 01 BU UN#
(13 14 15T 1 (24 10 F9 416BV SST-2A SST-2B SST-2C 16B (1B (82B (9B (7B(B 2B( 48oV 4eovBBV 4ov 15B 48oV LL o
5 B
_r P I12 B
ut I S-2F N..ND SST-2G ryrEl E2 y
.(17B,-(22B (29B
(-27B 18 EDG-A EDG-B
Emergency Bus Layout For Safety Injection Pumps Offsite offuite power power Bus El Bus E2 18 288 IT 71 I
77 178 22B 298 278 29C SIP A SIP C EDG A SIP B EDG B
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 AGENDA OPENING REMARKS C. R. DIETZ OVERVIEW OF SI SYSTEM R. H. CHAMBERS E&
REVIEW OF SI SYSTEM TIME LINE R. H. CHAMBERS CURRENT ISSUES AND FUTURE CONSIDERATIONS LOCA ANALYSIS T. B. CLEMENTS ELECTRICAL/EDGs G. E. ATTARIAN SI PUMP "C".
R. H. CHAMBERS CONCLUDING REMARKS C. R. DIETZ
SI SYSTEM TIME LINE 1987 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC LOCA AC POWER AC POWER AC POWER SIP IC MARCH - APRIL
- SAFETY SYSTEM FUNCTIONAL INSPECTION MAY-JULY ECCS SWITCHOVER CHANGES JULY CONSULTANT IDENTIFIED FOR PERFORMANCE OF FORMAL EDG LOADING CALCULATION OCTOBER DETAILED ANALYSIS BEGINS ON EDG LOADING CALCULATION NOVEMBER BORIC ACID NOTED ON SIP "C" FLANGE BOLTS
SI SYSTEM TIME LINE 1988 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC LOCA LOCA AC POWER AC POWER SIP '"
JANUARY IDENTIFICATION OF SIP "B" SINGLE FAILURES EOP'S INTEGRATED WITH EDG LOADING CALCULATION FEBRUARY MOD-947 IMPLEMENTED ANALYSIS PERFORMED FOR OPERATION WITH ONE SI PUMP MARCH MOD-951 IMPLEMENTED; SIP "B" LEFT AS MANUAL START PUMP APRIL - MAY
- TS AMENDMENT ISSUED; POWER INCREASED TO 100%
SI SYSTEM TIME LINE 1989 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC LOCA AC POWER SIP "C"SIP "C"
SIP "C JANUARY NFS DESIGN ACTIVITY 89-001 ISSUED TO SUPPORT EPP-009 MOD-958 IMPLEMENTED APRIL FLANGE LEAK NOTED ON SIP "C" JULY - OCTOBER
- METALLURGICAL ANALYSIS INDICATES CASTING FLAWS
- DECON INITIATED DECEMBER SIP "C" SHIPPED TO BRUNSWICK FOR DECON
SI SYSTEM TIME LINE 1990 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC SIP "c" SIP "C" AC POWER AC POWER JANUARY DRESSER IDENTIFIED FOR REPAIRS TO SIP "C" FEBRUARY SIP "C" DECON CONTINUES IN WASHINGTON STATE REV. 0 OF EDG LOADING CALCULATION ISSUED MARCH SIP "C" DECON COMPLETED; CASING SHIPPED TO DRESSER FOR REPAIRS MAY SIP "C" REPAIR QUOTE RECEIVED REV. 1 OF EDG LOADING CALCULATION ISSUED JUNE - DECEMBER SIP "C" REPAIR ABANDONED; TWO NEW CASINGS TO BE PURCHASED SPECIFICATION DEVELOPMENT AND BUDGETING ON-GOING FOR PURCHASE OF NEW SI PUMP CASINGS
SI SYSTEM TIME LINE 1991/1992 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC JAN LOCA LOCA LOCA LOCA SIP IC" SIP "C" FEBRUARY ANF REPORTS ERROR IN LB LOCA ANALYSIS MAY ERROR IDENTIFIED IN NFS DESIGN ACTIVITY 89-001; POWER REDUCTION TO 60% INITIATED ANALYSIS FOR 100% POWER COMPLETED; UNIT RETURNED TO 100% POWER SPECIFICATIONS FOR SIP "C" RELEASED TO PURCHASING DEPARTMENT JULY - OCTOBER
- SB LOCA ANALYSIS PERFORMED; "SECOND PEAK" IDENTIFIED DURING ECCS SWITCHOVER SEPTEMBER PURCHASE ORDER ISSUED FOR TWO NEW SI PUMP CASINGS JANUARY, 1992
- REVISIONS TO EPP-009 AND EPP-010 APPROVED
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 AGENDA OPENING REMARKS C. R. DIETZ OVERVIEW OF SI SYSTEM R. H. CHAMBERS REVIEW OF SI SYSTEM TIME LINE R. H. CHAMBERS CURRENT ISSUES AND FUTURE CONSIDERATIONS LOCA ANALYSIS T. B. CLEMENTS ELECTRICAL/EDGs G. E. ATTARIAN SI PUMP "C" R. H. CHAMBERS CONCLUDING REMARKS C. R. DIETZ
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 CURRENT ISSUES AND FUTURE CONSIDERATIONS LOCA ANALYSIS SECOND AND THIRD PCT PEAKS ADDRESSED BY EOP CHANGES HISTORICAL PCT DATA AND USE OF MARGINS EXTENDING CORE BURN/FUEL CYCLE HIGH PERFORMANCE FUEL DESIGN INCREASES TO ALLOWABLE PEAKING FACTORS REQUIREMENTS FOR ADDITIONAL SI FLOW; VARIOUS OPTIONS BEING CONSIDERED AND PLANNED
H.B. ROBINSON UNIT 2 1 HHSI SWITCHOVER ANALYSIS 1,600 1,400 10.0 1 -----
11.01 1000
~1,00 - $1-11.5' w
800 li IL 600 400 200 0
0 1,000 2,000 3,000 TIME (SEC)
FIGURE 6-OD TEMPERATURE VS. TIME
SBLOCA Switchover Changes EPP -9 Changes 2500 2000 1500 1000 500 2
3 4
5 6
7 8
9 10 11 12 13 Thousands TIME (sec)
Ten minute switchover Three minute switchover
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 CURRENT ISSUES AND FUTURE CONSIDERATIONS (CONTINUED)
LOCA ANALYSIS (CONTINUED)
HISTORICAL FULL POWER PCT DATA NOV. 4, 1984 LB PCT 2197*F NOV. 8, 1985 LB PCT 2199*F OCT. 2, 1986 LB PCT 2127OF MAR. 11, 1987 SB PCT 13980F 3
MAY 7, 1988 LB PCT 19820F c' f SB PCT 20040F JAN. 16, 1991 LB PCT 2178*F JULY 26, 1991 SB PCT 2096*F CYCLE 15 (DRAFT)
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 CURREN ISUES AND FUTURE CONSIDERATIONS (CONTINUED)
ELECTRICAL/EDGs
- OBJECTIVES DEMONSTRATE THE TECHNICAL ADEQUACY OF THE HBR2 ELECTRICAL DISTRIBUTION SYSTEM ENSURE THE LIMITATIONS OF THE SYSTEM ARE UNDERSTOOD DISCUSS APPROPRIATE RECOMMENDATIONS FOR SYSTEM MODIFICATIONS OR ENHANCEMENTS DISCUSS THE REQUIRED INFRASTRUCTURE TO MAINTAIN AND CONTROL SYSTEM CHANGES
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 RENT ISSUES AND FUTURE CONSIDERATIONS (CONTINUED)
ELECTRICAL/EDGs (CONTINUED)
PLAN BASELINE THE ELECTRICAL DISTRIBUTION SYSTEM ESTABLISH SYSTEM LEVEL DESIGN BASIS DEVELOP MATRIX OF REQUIRED CALCULATIONS CAPACITY VOLTAGE SHORT CIRCUIT PROTECTION/COORDINATION DEVELOP DESIGN METHODOLOGY DESIGN GUIDES IDENTIFY LIMITATIONS AND MARGINS
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 RENT ISSUES AND FUTURE CONSIDERATIONS (CONTINUED)
ELECTRICALIEDGs (CONTINUED)
PLAN (CONTINUED)
RECOMMEND AND IMPLEMENT REQUIRED PROJECTS TO MAINTAIN DESIGN BASIS AND TO INCREASE MARGINS RECOMMEND POTENTIAL LONG TERM ENHANCEMENTS THAT CONSIDER THE LIMITATIONS OF THE EXISTING SYSTEM IMPLEMENT PLAN WHEN DEALING WITH EMERGENT ISSUES
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 RENT ISSUES AND FUTURE CONSIDERATIONS (CONTINUED)
ELECTRICALIEDGs (CONTINUED)
- CAPACITY DETERMINE THAT ONSITE AND OFFSITE SOURCES AND EQUIPMENT HAVE ADEQUATE CAPACITY TO PERFORM THEIR INTENDED FUNCTION DEVELOPMENT OF LOAD FACTORS INDIVIDUAL LOAD EOP'S DISCUSSION WITH PLANT OPERATORS FUNCTIONAL REVIEW DEVELOPMENT OF TIME LINE ONSITE OFFSITE IDENTIFICATION OF MARGINS
EDG "B" LWADING TIME LINE
, PRELIMINARY RESULTS
/
............II I.
oloo*
IvI-I
.4I7 I
.a ai
- i.
.I er. eel 2
2 1.-
Zs 4 4 4 7:
21 su...
2 27I ki.
.2371
.I A
2054 34 20131 o see
- 9 n008 -
.20)9
.o
.1 low (a425 Do*-
2*
- se es(
.. o 61 eenB
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 CRRENT ISSUES AND FUTURECONSIDERATIONS (CONTINUD ELECTRICAL/EDGs (CONTINUED)
FUTURE CONSIDERATIONS MANAGEMENT OF MARGINS INCREASE SYSTEM FLEXIBILITY INCREASE SYSTEM RESPONSIVENESS ANTICIPATION OF FUTURE LOAD GROWTH MAINTAIN THE DISTRIBUTION SYSTEM WITHIN DESIGN MARGINS
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 CURRENT IUIES AND FUTURE CONSIDERATIONS (CONTINUED)
ELECTRICAL/EDGs (CONTINUED)
FUTURE CONSIDERATIONS (CONTINUED)
METHODOLOGY ANALYZE EXISTING COMPONENTS INDIVIDUALLY VS LIMITATIONS FOR POTENTIAL IMPROVEMENTS DIESEL GENERATORS,'
EMERGENCY BUSES ANALYZE POTENTIAL OPERATIONAL AND FUNCTIONAL CHANGES ANALYZE THE EXISTING SYSTEM IN ITS ENTIRETY SYSTEM VOLTAGE CHANGES ADDITIONAL BUSES
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 CURRENT ISSUES AND FUTURE CONSIDERATIONS (CONTINUED)
ELECTRICAL/EDGs (CONTINUED)
FUTURE CONSIDERATIONS (CONTINUED)
THROUGH THE CONTINUATION OF THE ELECTRICAL RECONSTITUTION PLAN, HBR2 IS OPTIMIZING THE UNDERSTANDING, CONTROL, AND MANAGEMENT OF THE LIMITATIONS AND MARGINS OF THE ELECTRICAL DISTRIBUTION SYSTEM AND IDENTIFYING POTENTIAL ENHANCEMENTS TO INCREASE THE FLEXIBILITY OF THE SYSTEM
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 CURRENT ISSUES AND FUTURE CONSIDERATIONS (CONTINUED)
SI PUMP "C" DELIVERY ANTICIPATED LATE THIS YEAR INSTALLATION NO LATER THAN REFUELING OUTAGE 15 (1993)
FOLLOWING RETURN TO SERVICE, SI PUMP "B" WILL REMAIN A MAINTENANCE SPARE PUMP THAT MAY BE SUBSTITUTED FOR EITHER SI PUMP "A" OR "C"
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 AGENDA OPENING REMARKS C. R. DIETZ OVERVIEW OF SI SYSTEM R. H. CHAMBERS REVIEW OF SI SYSTEM TIME LINE R. H. CHAMBERS CURRENT ISSUES AND FUTURE CONSIDERATIONS LOCA ANALYSIS T. B. CLEMENTS ELECTRICAL/EDGs G. E. ATTARIAN SI PUMP "C" R. H. CHAMBERS CONCLUDING REMARKS C. R. DIETZ
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 CONCLUDING REMARKS
SUMMARY
OF PAST ISSUES TECHNICALLY COMPLEX INHERENT TO ORIGINAL DESIGN/ANALYSIS OF SI SYSTEM APPROPRIATE AND CONSERVATIVE CORRECTIVE ACTIONS TAKEN CURRENT ISSUES AND FUTURE CHALLENGES SEVERITY LEVEL III VIOLATION; EMPHASIS ON DESIGN AND ENGINEERING FUNCTIONS MANAGEMENT OF MARGINS INDUSTRY COMPETITIVENESS
TECHNICAL MEETING SAFETY INJECTION SYSTEM JANUARY 31, 1992 CONCLUDING REMARKS (CONTINUED)
MANAGEMENT INITIATIVES TASK TEAM ACTIVELY INVOLVED WITH ASSESSMENT AND MANAGEMENT OF MARGINS OPEN, ON-GOING DIALOGUE WITH NRC; "COMMUNICATION IS ESSENTIAL" COMMITMENT TO THE SAFE, CONTINUED OPERATION OF H. B. ROBINSON UNIT NO. 2
ENCLOSURE 2 MEETING WITH CAROLINA POWER & LIGHT COMPANY H. B. ROBINSON 2 January 31, 1992 LIST OF ATTENDEES NAME ORGANIZATION R. H. Lo NRR/PDII-1 C. R. Dietz CP&L P. J. Kang NRR/DST/SELB G. C. Lainas NRR/DRP R. Jones NRC/SRXB E. G. Adensam NRC/NRR/PDII-1 L. W. Garner RII C. T. Baucom CP&L R. H. Chambers CP&L R. W. Prunty, Jr.
CP&L G. Attarian CP&L T. Clements CP&L V. San Angelo Bechtel