ML20137U828
| ML20137U828 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 03/26/1997 |
| From: | Hiland P NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Kraft E COMMONWEALTH EDISON CO. |
| References | |
| EA-96-530, EA-96-531, NUDOCS 9704170118 | |
| Download: ML20137U828 (52) | |
Text
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March 26, 1997 R
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Mr. E. Kraft, Site Vice President 1
Quad Cities Station Commonwealth Edison Company
- 22710 206th Avenue North Cordova, IL 61242 I
SUBJECT:
OUAD CITIES PRE-DECISIONAL ENFORCEMENT CONFERENCE i
i
Dear Mr. Kraft:
This refers to the meeting conducted at the NRC Region lli Office in Lisle, Illinois on 1'
February 27,1997. The meeting was to discuss your actions related to: 1) the identification of degraded control room ventilation system performance at the Quad Cities j
station, and 2) response to a degraded secondary containment following a severe storm event. - These issues are discussed in detail in Inspection Reports 50-254:265/96017 and 50-254:265/96019 respectively, both dated February 4,1997. The topics discussed at the meeting included our findings and your related corrective actions, both completed and j
planned.
i in accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter and j
its enclosures will be placed in the NRC Public Document Room (PDR).
We appreciate your cooperation in this matter. If you have any questions regarding this meeting, please contact me at 630/829-9603.
Sincerely,
/s/ P. L. Hiland Patrick L. Hiland, Chief Reactor Projects Branch 1 1
Docket No. 50-254 Docket No. 50-265
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Enclosures:
1.
Partial List of Attendees 2.
Licensee Presentation, Comed Quad Cities Station, Pre-decisional Enforcernent Conference oocuwwi nue secow.om t.,#..
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O E. Kraft s cc w/ encl:
T. J. Maiman, Senior Vice President Nuclear Operations Division D. A. Sager, Vice President, Generation Support H. W. Keiser, Chief Nuclear Operating Officer L. W. Pearce, Station Manager C. C. Peterson, Regulatory Affairs Manager
- 1. Johnson, Acting Nuclear Regulatory Services Manager Richard Hubbard Nathan Schloss, Economist Office of the Attorney General State Liaison Officer Chairman, Illinois Commerce Commission J. R. Bull, Vice President, General &
Transmission, MidAmerican Energy Company Document Control Desk-Licensing Distribution:
Docket File w/enct Project Manager, NRR w/ encl PUBLICM w/enci DRP w/enci OC/LFDCB w/ encl SRI Quad Cities, Dresden, RAC1 (E-Mail)
LaSalle w/ encl A. B. Beach, w/enct Rill Enf. Coordinator, w/enct CAA1 (E-Mail)
Deputy RA, w/enci Rail PRR w/oncl DRS (3) w/enci TSS w/enci J. Lieberman, OE w/enci J. Goldberg, OGC w/enci R. Zimmerman, NRR w/enci i
ENCLOSURE 1 OUAD CITIES PRE-DECISIONAL ENFORCEMENT CONFERENCE FEBRUARY 27,1997 LIST OF ATTENDEES Commonwealth Edison (Comed)
E. S. Kraft, Quad Cities Site Vice President L. W. Pearce, Quad Cities Station Manager J. J. Hutchitison, Engineering Manager, J. R. Garrity, Design Engineering Supervisor D. W. Craddick, Quad Cities System Engineering Supervisor Nuclear Raoulatory Comml== ion A. B. Beach, Regional Administrator, Rill J. L. Caldwell, Director, Division of Reactor Projects, Rlli P. L. Hiland, Chief, Reactor Projects Branch 1, Rlli C. G. Miller, Dresden Senior Resident inspector, Rlli L. L Collins, Dresden Resident inspector, Rlli J. K. Heller, Enforcement Coordinator, Rill R. A. Capra, Director, Project Directorate lll-2, NRR R. M. Pulsifer, Quod Cities Project Manager, NRR i
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., s oix INTRODUCTION Ed Kraft, Jr.
l CONTROL ROOM EMERGENCY VENTILATION l
SYSTEM Dave Craddick l
Overview of General Arrangement i
Timeline Apparent Violations
- Issue, Cause('), Corrective Actions i
s i
Significance l
Follow-up Questions l
Inspection 97-003 Concems l
m SECONDARY CONTAINMENT John Garrity l
Overview of General Arrangement Timeline l
Apparent Violations i
- Issue, Cause(s), Corrective Actions Significance c
i Follow-up Questions
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CLOSING REMARKS Ed Kraft, Jr.
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ISSUES i
DAVID CRADDICK i
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CONTROL ROOM EMERGENCY VENTILATION SYSTEM CHRONOLOGY j
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Action 2/83 Modification 12tter 4/85 (ISSUE #1)
Post Modification Test 1/89 Initiated CREVS Monthly Surveillance to verify 1/S" Water Gauge Differential Pressure between Control Room and Service Building Hallway 9/07/96 Monthly Surveillance Verified 1/8" Water Gauge Differential Pressure 9/23/96 (ISSUE #2)
Implemented upgraded Technical Specifications i
10/08/96 PIF written addressing Dresden identified CREVS concern 10/3 - 10/27/96 Discussions with Dresden and LaSalle 10/28/96 Technical Specification Test failed, Entered LCO, ENS phone call, CREVS Inoperable i
10/28 - 11/02/96 Repairs 11/03/96 (ISSUE #3)
Surveillance Test demonstrate.d 1/8" Water Gauge Differential Pressure, CREVS Declared Operable, Exited LCO 11/13/96 (ISSUE #4)
Engineering noted discrepancy between portable equipment measured flow and installed flow instrument measured flow 11/14/96 Electronic Calibration performed on installed instmment, as-found within Technical Specifications i
11/18/96 PIF written documenting instrument question 11/15 !i/2'd96
-Toxic Gas Analyzer Inoperable, which prevented air filtration unit operation and measurement of flow to address P1F concern 11/23/96 Toxic Gas declared Operable i1/24/96 Air Filtration Unit Ficw Test performed and installed Instrument found to be outside Technical Specifications.
Control Room Emergency Fihrntion System inoperable 11/26/96 Initiated work to restore CREVS to desigri
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i The modification testin 1985 and subsequent surveillance tests of l
CREVS failed to ensure that the system wouldperform as describedin the l
Updated Final Safety Analysis Report (UFSAR) i i
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lAodification test procedure was less l
than adequate l
Lack of a rigorous modification process l
in 1985 i
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l Revised surveillance procedure l
(completed) l l
lmplemented design basis reviews of
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post-modification tests from a sample of l
1980-1996 modifications l
m Established Engineering Assurance l
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Control Room Emergency Ventilation System (CREVS) was inoperable in l
excess of the Technical Specification limit T
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Engineenng supervisors belie'ved that seeking a license amendment based l
upon a new control room habitability l
study and safety evaluation, as a l
corrective action, was allowed by G.L.91-18 I
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RRECTIVEACTIONS l
Trained Engineering supervisors on
.i conforming to design basis requirements (completed) l Communicatedlessons leamed via l
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other Comed Stations (completed) a Reviewed open operabilities (completed) 1
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pVkORRECTIVEACTIONS
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Revising operability determination i
procedure clarifying process for evaluating reduced design margin l
Issued procedure on how to disposition l
design basis discrepancies (completed)
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n Completed design review of top ten risk l
significant systems (completed)
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1 Calibrated permanent ^ instrument to l
reflect actual air flows (completed)
Adjusted system flow rate to satisfy Technical Specification requirement (completed) l n Performing reviews of calibrations that
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l Revising calibration procedure for l
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j measurement (RTD) instrument x Revising procedure to record as-found
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FETYSIGNIFICANCE q." k e t
No potentialimpact to health and safety ofpublic Calculation supports higher allowable l
inleakage 1
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exceeded for control room operators i
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testing and acceptance criteria l
- Procedures direct engineer to refer to applicable design documents for testing l
and acceptance criteria i
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Ensure equipment testing incorporates l
design specifications (continued) l
- Training program requires engineers to be l
qualified to develop andperform modification tests
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testprocedures i
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Evaluation of degraded-equipment 1
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- PIF documents conditions adverse to safe plant operation l
- Shift Engineer reviews for Technical Specification operability i
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- Engineering performs operability assessment and determines conformance l
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- PORC reviews operability determinations and reviews conformance to design recommendations
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