ML20210K463

Summary of 860408 Meeting W/Util,Bechtel & Gage-Babcock Re Fire Damper Deviations Identified by Applicant & Testing of Dampers to Demonstrate Adequacy.Deviations Discovered in Nov 1985.Supporting Documentation Encl

ML20210K463
Person / Time
Site:	Vogtle
Issue date:	04/18/1986
From:	Mark Miller Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8604280315
Download: ML20210K463 (32)

Text

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UNITED STATES g NUCLEAR REGULATORY COMMISSION

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'% , , , , , # 18 APR 1505 Docket Nos.: 50-424 and 50-425 APPLICANT: Georgia Power Company .

FACILITY: Vogtle, Units 1 and 2

SUMMARY

OF MEETING ON FIRE DAMPER DEVIATIONS HELD APRIL 8, 1986 The staff met with the applicant and its representatives on April 8, 1986, to discuss fire damper deviations identified by the aprlicant and the testing of the dampers. designed to demonstrate their adequacy. Participants are listed in Enclosure 1. The applicant provided the resume of one of its consultants.

It is included as Enclosure 2.

The applicant gave a presentation discussing the damper deviations and the I results of the tests conducted. The applicant's slides are provided in Enclosure 3.

The applicant indicated that it first discovered the fire damper deviations in ,

November 1985. The deviations were in the installation of the Air Balance I dampers and were of two types: spacers installed between the damper sleeve I and barrier opening and rigid seismic supports provided to support the damper l sleeve at the face of the opening. ,

1 The applicant described its test program which included tests of both wall and floor dampers. The tests included fire endurance and hose stream tests in accordance with UL Test Standard 555. Damper assemblies identified by the applicant as being representative samples of worst case configurations were tested by UL in its laboratories.

Vogtle Unit I has a total of 703 wall dampers of which 145 have deviating configurations in fire-rated barriers. The corresponding numbers for Unit 2 are 392 and 71. The relative reduction in the second number for Unit 2 is because the discovery of the deviations in Unit 1 permited the applicant to alter its damper installation proc'dures achieving less Unit 2 damper deviations. The applicant tested three configurations of wall dampers which envelope the various configurations of the 156 affected dampers.

The fire endurance test results for wall dampers indicate that the dampers satisfactorily withstood the endurance test for three hours, did not develop any openings, and that the flame did not pass beyond the dampers during the test. The hose stream test warped the sleeve and caused openings to develop between the frame and sleeve. The applicant concluded that the openings developed as a result of cooling and that they were insignificant since there is not a concern about fire spread at this stage.

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18 APR 1986 Vogtle Unit I has a total of 141 floor dampers, 54 of which are in fire-rated barriers. Unit 2 has 86 floor dampers with 5 in fire-rated barriers. The applicant tested two configurations which enveloped the 59 dampers involved.

The applicant made this statement in response to a staff question regarding an inaccurate slide which stated that the tests applied only to Unit I dampers.

The fire endurance test results indicate that the floor dampers satisfactorily withstood the test for three hours, remained securely closed, did not develop through openings, and the flame did not pass beyond the dampers during the test. During the hose stream test the dampers sagged, the sleeve warped and openings of li to 2 inches developed. The applicant indicated that the hose stream was applied to the floor dampers against the closure of the dampers.

The applicant stated that test results indicate that the floor dampers are acceptable. Only five dampers in Unit 1 (we were not provided comparable infonnation on Unit 2) are installed in barriers that separate components of ,

redundant safe shutdown trains. The applicant provided fire laadings and suppression and detection information for these five damper locations.

The staff indicated that generally the applicant's test program sounded adequate but that a detailed review of formally submitted information must be conducted before a final determination can be made. The staff indicated that it would need to verify that the configurations tested are indeed worst case.

The staff stated that the information subn.itted by the applicant should include the actual test report, discussion of connecting ductwork addressing the possibility of water passing through dampers, and discussion of hose stream failures. The submittal should also include information from the presentation at a comparable level of detail. The applicant estimated a May submittal.

The applicant inquired about the staff fire protection audit. The staff explained that FSAR commitments and SER conclusions are verified onsite during a week long visit. This visit typically occurs about three months prior to fuel load and following SER open item closure. The visit may be coordinated with a regional fire protection inspection.

The staff inquired about submittal of additional justification for a sprinkler system flushing deviation identified in FSAR Amendment 20. This deviation was the subject of a March 19, 1986, telecon in which the applicant indicated an April 7,1986, response. At the meeting the applicant indicated that a response would be forthcoming later in the week of April 7,1986.

M Melanie A. Miller, Project Manager PWR Project Directorate #4 Division of PWR Licensing-A

Enclosures:

As stated cc: See next page l / Nct P%

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k PWR#4/DPWR-A BJYoungblood 04/ /86 04/ 36 04/ () /86

MEETING

SUMMARY

DISTRIBUTION h l 18 APR 1985 -

M7 NRC Participants NRC PDR M. Miller L PDR S. West J. Shapaker NSIC 4 PRC System PWR#4 Reading File i Project Manager M. Miller M. Duncan Attorney, OELD J. Partlow E. Jordan B. Grimes ACRS (10)

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I Vogtle Unit I has a total of 141 floor dampers, 54 of which are in fire-rated i barriers. Unit 2 has 86 floor dampers with 5 in fire-rated barriers. The applicant tested two configurations which enveloped the 59 dampers involved. ,

The applicant made this statement in response to a staff question regarding an l inaccurate slide which stated that the tests applied only to Unit I dampers.

The fire endurance test results indicate that the floor dampers satisfactorily withstood the test for three hours, remained securely closed, did not develop 4 through openings, and the flame did not pass beyond the dampers during the test. During the hose stream test the dampers sagged, the sleeve warped and openings of li to 2 inches developed. The applicant indicated that the hose stream was applied to the floor dampers against the closure of the dampers.

The applicant stated that test results indicate that the floor dampers are acceptable. Only five dampers in Unit 1 (we were not provided comparable information on Unit 2) are installed in barriers that separate components of redundant safe shutdown tfains. The applicant provided fire loadings and suppression and detection infonnation for these five darper locations.

i The staff indicated that generally the applicant's test program sounded i '

adequate but'that a detailed review of fonnally submitted information must be conducted before a final detennination can be made. The staff indicated that

't would need to verify that the configurations tested are indeed worst case.

.1e staff stated that the information submitted by the applicant should include the actual test report, discussion of connecting ductwork addressing the possibility of water passing through dampers, and discussion of hose stream fa 1ures. The submittal should also include information from the presentation

! at a comparable level of detail. The applicant estimated a May submittal.

i j The applicant inquired about the staff fire protection audit. The staff

! explained that FSAR comitments and SER conclusions are verified onsite during a week long visit. This visit typically occurs about three months prior to fuel load and following SER open item closure. The visit may be coordinated

with a regional fire protection inspection. j

! The staff inquired about submittal of additional justification for a sprinkler system flushing deviation identified in FSAR Amendment 20. This deviation was

, the subject of a March 19, 1986, telecon in which the applicant indicated an i

April 7,1986, response. At the meeting the applicant indicated that a i response would be forthcoming later in the week of April 7,1986.

helanieA. Miller,ProjectManager i,

PWR Project Directorate #4 i Division of PWR Licensing-A i

Enclosures:

As stated cc: See next page l

l 1

_. _ _ _ _ _ _ _ _ . _ _ _ _ _ _ . _ _ . _ _ _ _ , . . _ _ _ _ . . _ _ _ _ . _ . _ . _ . . _ . _ . _ . _ . . . _ _ _ . _ _ , _ _ . . ~ . _ _ . . . _ .

, Mr. R. E. Conway 4

Georgia Power Company Vogtle Electric Generating Plant cc:

Mr. L. T. Gucwa Resident Inspector Chief Nuclear Engineer Nuclear Regulatory Comission Georgia Power Company P. O. Box 572 P.O. Box 4545 Waynesboro, Georgia 30830 Atlanta, Georgia 30302 Mr. Ruble A. Thomas Deppish Kirkland, III, Counsel 2 Vice President - Licensing Office of the Consumers' Utility l Vogtle Project Council Georgia Power Company / Suite 225

, Southern Company Services, Inc. 32 Peachtree Street, N.W.

l P.O. Box 2625 Atlanta, Georgia 30303 Bimingham, Alabama 35202 James E. Joiner Mr. Donald O. Foster Troutman, Sanders, Lockeman, Vice President & Project General Manager & Ashmore Georgia Power Company Candler Building Post Office Box 299A, Route 2 127 Peachtree Street, N.E.

Waynesboro, Georgia 30830 Atlanta, Georgia 30303 '

Douglas C. Teper Mr. J. A. Bailey Georgians Against Nuclear Energy i Project Licensing Manager 1253 Lenox Circle Southern Company Services, Inc. Atlanta, Georgia 30306

P.O. Box 2625 Birmingham, Alabama 35202 Billie Pirner Garde Citizens Clinic Director Ernest L. Blake, Jr. Government Accountability Project Bruce W. Churchill, Esq. 303 10th Street Shaw, Pittman, Potts and Trowbridge Augusta, Georgia 30901 1800 M Street, N.W.

, Washington, D. C. 20036 Mr. G. Bockhold, Jr.

{ Vogtle Plant Manager

]

^

Georgia Power Company Route 2, Box 299-A Waynesboro, Georgia 30830 Regional Administrator, Region II U.S. Nuclear Regulatory Comission >

101 Marietta Street, N.W., Suite 2900 -

Atlanta, Georgia 30323 i

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ENCLOSURE 1 T-Participants NRC BECHTEL M. Miller R. Shpall S. West C. Shinbrot J. Shapaker K. Walvekar M. Larson SOUTHERN COMPANY SERVICES GEORGIA POWER COMPANY J. Bailey O. Batum R. Sprankle J. Hartka GAGE-BABC0CK J. Camobell j

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l JOHN A. CAMPBELL. P.E. Gase-Babcock 8 Associates Soecialization

- Risk Analysis: Hazard / protection evaluation, loss probabilities, fault tree analysis, mathematical modeling.

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- Systems Design: Suppression, detection & alors, smoke control.

- Code Consulting: Compliance reviews, equivalency plans, negotiations,

- Loss Investigation: Fire and explosion. i

- Research & Development: Full scale and laboratory fire tests. l Professional Qualifications 5.5. in Fire Protection Engineering, Illinois Institute of Technology M.S. in Engineering Mechanics, Universit,y of Missauri at Rolla.

Graduate studies in Civil and Mechanical Engineering and Computer Sciences.

Electrical Fires Origin and Investigation, University of Wisconsin.

Registered Professional Engineer in Illinois Wisconsin and Indiana. 1

. Chairman Fire Science and Technology Educator's Section of National Fire j Protection Association.

1 Gubernatorial Appointment to the Illinois Fire Advisory Commission, three terms.

Member: Society of Fire Protection Engineers; Technical Subcommittee on Smoke Management of the National Fire Protection Association.

Related Project Exoerience Evaluated fire risks and fire protection in nuclear power plants; assisted the Nuclear Regulatory Commission in developing fire safety standards for nuclear power plants. Designed cable tray fire spread, protection and suppression experiments for the Nuclear Regulatory Commission and witnessed full scale fire tests conducted by Sandia Laboratories. Underwriters Laboratories and the University of California at Berkley.

. Conducted and certified tests of fire and air control dampers to qualify thes

for use in Nuclear Power Plants.

Arranged for fire tests at Undeneriters Laboratories to obtain a listing for fire and tooke dampers. Planned and scheduled tests; arranged for damper installation, witnessed tests and expedited the entire process through U.L.

Analyzed the fire exposure hazard to cable in trays on the Dade County Rapid Transit Guideway. The radiative and convective heat transfer from fire threats l was modeled and unsteady state heat transfer calculations performed to determine j when critical damage threshold temperatures would be reached. Protection was

designed to protect train control cables from damage.

Performed fire hazard, risk and protection evaluations for: critical computer 1

i

- facilities at Johnson Space center; a 17 story telephone exchange building in Denver; aerosol chemical products, paint and adhesive manufacturing plants; and

other industrial and commercial buildings. Developed recommendations to improve protection and correct deficiencies.

Designed automatic fire suppression, detection and alare and smoke control systems for commercial buildings aerospace test facilities, industrial and

.' chemical processing plants, hospitals and military facilities.

Previous Employment Exoerience Air Balance, Inc., Chicago, IL. Chief Engineer Part time college instructor in Fire Sciences and Engineering.

! Emerson Electric Corporation, Electronics and Space Division, St. Louis, MD.

!!T Research Institute, Chicago Illinois.

National Aeronautics and Space Administration, Cleveland, Ohio.

j Sample Publications

, " Confinement of Fire in Buildings". Chapter in id'PA FIRE PROTECTION HANDBOOK; 15th and 16th Editions.

"Use of High Reliability /High Performance Sprinkler Systems to Compensate for Code Deficiencies in Building Renovation". Proceedings of the American Institute of Architects, Research & Design 85, Los Angeles, CA, Mar. 17, 1985.

" Reliability & Safety in Design of Smoke Control Systems". Second Annual Fire l Engineering Conference. Manhattan College, Riverdale, N.Y., June 4-5, 1984

[ " Microprocessor Logic in Fire Protection Systems". Society of Fire Protection i Engineers Technology Report 82-5, Boston, MA 1982.

l " Hazards of Large Vapor and Pool Fires". Proceedings of the American Petroleum

Institute, Fire and Safety Committee Meeting, New Orleans, LA Sept. 1981.

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- - DAMPERS SATISFACTORILY WITHSTOOD FIRE ENDURANCE TEST FOR 3 HOURS WITH NO PASSAGE OF FLAME OR OPENINGS.

- REMAINED SECURELY CLOSED TO PROTECT THE WALL OPENINGS I - THE SMALL OPENINGS (MAXIMUM 3/8") WHICH DEVELOPED AFTER THE HOSE STREAM TEST DO NOT l REPRESENT A SIGNIFICANT PATHNAY FOR THE PROPAGATION OF FLAME IN A HORIZONTAL PLANE AND 1 THEREFORE DO NOT INCREASE THE RISK OF FIRE SPREAD THROUGH THE BARRIER.

- ADDITIONALLY, THE NALL DAMPERS ARE CONNECTED TO THE DUCTS ON AT LEAST ONE SIDE IN MOST APPLICATIONS. DUCTS ARE MINIMUM 18 GAUGE (0.055") SHEET METAL. CONNECTED DUCT SERVES AS RADIANT ENERGY BARRIER TO FURTHER MINIMIZE THE POTENTIAL FOR IGNITION OF COM8USTIBLES ON THE UNINVOLVED SIDE OF BARRIERS.

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TOTAL DAMPERS 141 86 i

n DAMPERS THAT MEET THE INSTALLATION REQUIREMENTS OF l 61 81 ULIABI

- TOTAL DAMPERS INSTALLED WITH DEVIATING CONFIGURATIONS 80 5 DAMPERS INSTALLED WITH DEVIATING CONFIGURATIONS IN DERATED BARRIERS 26 0 REMAINING DAMPERS EVALUATED 54 5 i

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TYPE 84 SUPPORT AND SPACERS COVER PLATE AND SPACERS DAMPER SIZE - 35" X 35" DAMPER SIZE - 44" X 48" J

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t e 49 DAMPERS ARE INSTALLED IN BARRIERS THAT SEPARATE COMPONENTS (INCLUDING ELECTRICAL CABLES) 0F THE SAME SAFE SHUTDONN TRAIN OR HAVE NO SAFE SHUTDONN COMPONENTS ON ONE SIDE. THE DAMPER OPENING THUS WOULD MOT COMPROMISE THE ABILITY TO ACHIEVE SAFE SHUTDONN IN A FIRE EVENT.

s THE REMAINING S DAMPERS ARE INSTALLED IN BARRIERS THAT SEPARATE COMPONENTS (INCLUDING i ELECTRICAL CABLES) 0F REDUNDANT SAFE SHUTDONN TRAINS.

l THE FOLLONING DESIGN FEATURES MINIMIZE THE POSSIBILITY OF THESE DAMPERS BEING SU6JECTED TO THE MECHANICAL l LOADING EQUIVALENT TO THAT EXPERIENCED DURING THE HOSE STREAM TEST:

e USE(iFONLYSPRAY(FOG)N0ZZLES j e PRESENCE OF SUPPRESSION AND DETECTION SYSTEMS j e REINFORCED CONCRETE BUILDING CONSTRUCTION

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