ML20128N561

Summarizes 850206 Meeting W/Util Re Fire Protection.List of Attendees & Meeting Agenda Encl

ML20128N561
Person / Time
Site:	Rancho Seco
Issue date:	05/20/1985
From:	Miner S Office of Nuclear Reactor Regulation
To:	Reinaldo Rodriguez SACRAMENTO MUNICIPAL UTILITY DISTRICT
References
TAC-53444, TAC-58032, NUDOCS 8506030323
Download: ML20128N561 (17)

Text

._ ^

^

- J/ hlb /6

.,' NAY 2 01985 Docket No. 50-312 Mr. Ronald J. Rodriguez Assistant General Manager, Nuclear Sacramento Municipal Utility District 6201 S Street P. O. Box 15830 Sacramento, California 95813

SUMMARY

OF MEETING HELD ON FEBRUARY 6,1985 WITH SACRAMENTO MUNICIPAL UTILITY DISTRI P i0 DISCUSS FIRE PROTECTION Sacramento Municipal Utility District (SMUD, the licensee) had initiated a complete re-evaluation of Rancho Seco's conformance.with the requirements of 10~CFR Part 50 Appendix R.

. As a result of the re-evaluation, the licensee found a number of additional areas where they concluded exemptions were required. The purpose of the meeting was to provide the licensee the opportunity of discussing with the staff the exemptions and obtaining staff comments prior to submitting their exemption request. The attendees list (enclosure 1), and copies of some of the hand out from the meeting (enclosure

2) are attached.

The licensee stated that they had 3 areas of concern where they were not sure an exemption is required and 9 exemptions to discuss. During the discussion the licensee used video tape to illustrate problem areas. The licensee stated that the exem'ption request will be submitted within a few weeks. In addition, the licensee stated that their requested target date for a decision on the exemptions was start up from the refueling outage scheduled to stv t

• in March, 1985. The expected ts' art up date was early in June,1985. The staff comments are as follows:

1. We indicated that since there will be no automatic suppression or fire detection for the NSEB roof area an exemption will be required. We further noted that since the area below the roof is a non safety area, the effect of a fire in this area on the redundant safety systems on the roof should be addressed.

2. We agreed with the licensee an exemption is not required for the contsinment hatch and purge valves.

3. We stated that since they do not propose to provide detection and entomatic sprinklers in the nuclear service raw water pump area an a.temption will be required.

4 With regard to an exemption from the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> requirement to achieve cold shut down, we indicated that their approach for justifying the exemption appears reasonable, hF

.? ..

Rancho Seco Meeting Summary 5. With regard to the RCP Oil Collection proposed exemption we suggested that the licensee describe where material in the normal sump flows to when the oil collection system overflows.

6. We stated that a sprinkler system and detection system will probably be needed for the Auxiliary Feedwater Pumps for fires adjacent to the pumps.

7. With regard.to the auxiliary feed water valves we indicated that they probably would have to install a cable tray fire break.

8. With regard to the Auxiliary Building Penetration Area a sprinkler will be required in the hallway opening.

Sincerely, 0:feind **cd W Sydney Miner, Project Manager Operating Reactors Branch #4 Division of Licensing Encl'osure: As Stated-cc w/ enclosure:

See next-page ORB #4:DQ, C :ENG SMinepe/F' RF#guson

-5/t0/85 5/2p/85

ENCLOSURE 1 LIST OF ATTENDEES FIRE PROTECTION FEBRUARY 6, 1985 NAME ORGANIZATION Sydney Miner NRC/DL Bob Dieterich SMUD Elizabeth A. Kleinsorg IMPELL Robert L. Ferguson NRR/DE David Abbott SMUD Larry D. Young UESC/SMUD Bob Daniels SMUD Ken Scown IMPELL Bob Sherman IMPELL Douglas B. Wood BECHTEL Tarlochan Singh SMUD Ray Green BABCOCK & WILC0X John J. Vella BECHTEL POWER CORP.

John Stang NRR/DE Victor Benaroya NRR/DE/CMEB Leon Whitney IE/00ASIP/ORPB/ SECT 1 Jerry Wilson NRR - ASB Joe Holonich NRR - ASB

ENCLOSURE 2

~:DEX CONCERNS

1. NSEB ROOF

2. RB HATCH AND PURGE VALVE

3. NSRW PUMPS EXEMPTIONS

1. ACHIEVE COLD SHUTDOWN CONDIT0NS WITHIN 72 HOURS WITH LOSS OF 0FFSITE POWER

' 2. F.A. 68 - REACT 0R COOLANT PUMP OIL COLLECTION SYSTEM CAPACITY'0F COLLECTION TANKS

3. F.A. 69 - AUXILIARY FEEDWATER PUMPS - LACK OF SEPARATION

) 4. F.A. 69 - AUXILIARY FEEDWATER VALVES -

INTERVENING COMBUSTIBLES

5. F.A. 68 - CABLES INSIDE CONTAINMENT, ELECTRICAL

-PENETRATION AREA - INTERVENING COMBUSTIBLES

6. F.A. RGI - AUXILIARY BUILDING ELECTRICAL PENETRATION AREA - ONE-HOUR RATING OF CABLE -

FIRE BARRIER

. 7. FIRE AREA RB1 - AUXILIARY BUILDING (-)20'-0"

• l- LACK OF AUTOMATIC SUPPRESSION i

8. CONDUIT PENETRATIONS THROUGH FIRE BARRIERS -

INTERNAL SEALS-J l 9. HVAC DUCTS BETWEEN FIRE AREAS - NO FIRE DAMPERS 1

l

?

l.

7 I.

, FIRE AREAe 91-2 DESCRIPTION: NSEB ROOF EXEWTION FROM APPENDIX "R", SECTION III.G.2 SEPARATION: HORIZONTAL SEPARATION OF APPROXIMATELY 44 FEET SUPPRESSION: NONE DETECTION: NONE i

, REDUFOANT CDWONENTS: HVAC UNITS FOR NSEB (U-S03A AND B)

WHIOi PROVIDE SUPPORT FOR CONTROL ROOM HVAC POWER SUPPLIES.

2 FIRE LOAD: INSIGNIFICANT BTU /FT INSIGNIFICANT MINUTES f -g JUSTIFICATION FOR EXEMPTION:

OUTDOOR AREA WHERE LACK OF HEAT BUILD-UP AND LACK OF INTERVENING COEUSTIBLES PREQ.UDES THE NE SSITY OF AN AUTOMATIC SUPPRESSION SYSTEM OR FIRE RATED ENCLOSURE.

0 I

FIRE AREA: 68 DESCRIPTION: CONTAINENT PERSONNEL HATOi AND PUFEE VALVES EXEWTION FROM APPENDIX "R", SECTION III.G.2 SEPARATION: 3UBSTANTIAL ETAL BOUf0 ARIES TO AUXILIARY BUILDING.

1 SUPPRESSION: MANUAL EQUIPMENT INSIDE CONTAINENT

-. DETECTION: IONIZATION SMOKE DETECTORS REDUPOANT CDWONENTS: VARIOUS 2

FIRE LOAD: N/A BTU /FT N/A MINUTES JUSTIFICATION FOR EXEMPTION:

THE DISTRICT 00NQ.UDES 11tE QJRRENT DESIGN IS A SUBSTANTIAL FIRE BARRIER.

l l

[

l

FIRE AREA: 110 (NORTH YARD AREA)

DESCRIPTION: NSW RJMPS EXEWTION FROM APPENDIX "R", SECTION III.G.2 SEPARATION: HORIZONTAL SEPARATION OF APPROXIMATELY 400 FEET WITH NO INTERVENING COEUSTIBLES SUPPRESSION: NONE OETECTION: NONE REDUf0 ANT COMM)NENTS: NSW PUMPS (P-472A AND B) 2 FIRE LOAD: INSIGNIFICANT BTU /FT INSIGNIFICANT MINUTES JUSTIFICATION FOR EXEWTION:

(. '

i OUTDOOR LOCATION, LACK OF INTERVENING COEUSTIBLES AND LARGE HORIZONTAL SEPAPATION PREQ.tK)ES THE NECESSITY OF AN AUTOMATIC SUPPRESSION SYSTEM, DETECTION, OR FIRE RATED ENCLOSURE.

- s- e ,- - - e . ,em -,, -- - - - - ,e-,--- , ,---- _ ,,-w- -_,-, - - -- - ,_-, - -

FIRE AREA: N/A DESCRIPTION: 72 liOUR COLD SHUTDOWN EXE WTION FROM APPENDIX "R", SECTION III.L SEPARATI0tl N/A SUPPRESSIOV: N/A DETECTION: N/A

- 1 REDUf0 ANT 0)WONENTS: N/A 2

FIRE LOAD: N/A BTU /FT N/A MINUTES 4

JUSTIFICATION FOR EXEWTION:

B&W REACTORS, UPON LOSS OF OFFSITE POWER, ARE NOT CAPABLE 0F AQiIE/ING COLD SHUTDOWN WITHIN 72 HOURS.

e w

t

. l FIRE AREA: 68 DESCRIPTION: CONTAINENT, RCP OIL COLLECTION SYSTEM l I

EXE WTION FROM APPENDIX "R", SECTION III.0

{

SEPARATION: N/A SUPPRESSION: N/A DETECTION: INFRARED FLAE DETECTORS CLOSED CIRCUIT TELEVISION INSIDE CONTAINENT REDUNDANT CDWONENTS: N/A 2

FIRE LOAD: 54,000 BTU /FT 40.5 MINUTES 2

51,400 BTU /FT 38.55 MINUTES

(:'t JUSTIFICATION FOR EXEMPTION:

IN THE UNLIKELY EVENT THAT BOTH RCP OIL SYSTEMS SHOULD BE DRAINED INTO THEIR RESPECTIVE OIL COLLECTION TANKS, THE OVERFLOW WOULD NOT COME INTO CDNTACT WITH ANY IGNITION SOUR S ON THE WAY TO THE CDNTAINENT NORMAL SUMPS.

w - , - - - - - - --- -- - - - - - _ - - - - - - -

FIRE AREA: 69 DESCRIPTION: AFW PUMPS EXEWTION FROM APPENDIX "R", SECTION III.G.2 SEPARATION: HORIZONTAL SEPARATION OF LESS THAN TWO FEET WITH A RADIANT ENERGY SHIELD SUPPRESSION: FIRE HYDRANT AND HOSE HOUSE FOR MANUAL SUPPRESSION 1

DETECTION: FLAE DETECTION REDUEANT (X)WONENTS: AFW PUMPS 2

FIRE LOAD: 2,930 BTU /FT 2.4 MINijTES JUSTIFICATION FOR EXEWTION:

OUTDOOR LOCATION, RADIANT ENEEY SHIELD AND LACK OF SIGNIFICANT QUANTITIES OF COEUSTIBLE MATERIllS PREQ.UDES THE NEESSITY OF AN AUTOMATIC SUPPRESSION SYSTEM OR FIRE RATED ENCLOSURE.

se w ,-- , ---

~ .

FIRE AREA: 69 DESCRIPTION: AFW VALVES EXEWTION FROM APPENDIX "R", SECTION III.G.2 SEPARATION: HORIZONTAL SEPARATION OF 5? FEET SUPPRESSION: FIRE HYDRANT AND HOSE HOUSE FOR MANUAL SUPPRESSION f

s DETECTION: NONE REDUNDANT COW'ONP'4TS: A TRAIN AFW VALVES: FV20528 AND SFV20578 B TRAIN AFW VALVES: FV20527 AND SFV20577 2

FIRE LOAD: 2,930 BTU /FT 2.4 MINUTES

.. \

JUSTIFICATION FOR EXEMPTION:

OUTDOOR LOCATION AND THE AMOUNT OF SEPARATION FROM INTERVENING COM3USTIBLES PREQ.UDES THE NECESSITY OF AN AUTOMATIC SUPPRESSION SYSTEM, DETECTION, OR FIRE RATED ENCLOSURE.

FIRE AREA: 68 DESCRIPTION: CONTAINENT ELECTRICAL PENETRATION AREA EXEWTION FROM APPENDIX "R", SECTION III.G.2 SEPARATION: HORIZONTAL SEPARATION OF GREATER THAN 20 FEET WITH INTERVENING COE USTIBLES IN CABLE TRAYS HAVING FIRE BREAKS INSTALLED.

SUPPRESSION: TEN POUES CO FIRE EXTINGUISHER 2

DETECTION: IONIZATION SMOKE DETECTORS REDU W ANT CO WONENTS: SEVERAL 2

FIRE LOAD: 12,020 BTU /FT 9.0 MINUTES

-j

--~

JUSTIFICATION FOR EXEWTION:

OPEN SPACE ABOYE PEUETRATION AREA, FIRE BREAKS IN INTERVENING CABLE TRAYS AND SEPARATION PRECLUDE THE NECESSITY FOR ADDITIONAL MODIFICATIONS. '

e 9 l

FIRE AREA: RG1 DESCRIMION: AUXILIARY BUILDING ELECTRICAL PENETRATION AREA EXEFTION FROM APPENDIX "R", SECTION III.G.2 SEPARATION: HORIZONTAL SEPARATION OF 42 FEET SUPPRESSION: FIVE FIRE HOSE STATIONS, FIVE TEN-POUPO 00 2

PORTABLE. EXTINGUISHERS, WET PIPE SPRINKLER FULL FIRE AREA SYSTEM DETECTION: IONIZATION SMOKE DETECTORS REDUPOANT COWONENTS: RCS HOT LEG NARROW RANGE TEWERATURE j

APO SOURCE RANGE POCLEAR INSTRUENTATION.

2

) FIRE LOAD: 18,220 BTU /FT 13.8 MINUTES JUSTIFICATION FOR EXEWTION:

ONE-HOUR CONDUIT WRAP UP TO THE CABLE PENETRATION HOUSING WITH AUTOMATIC SUPPRESSION AND DETECTION PREauDES THE

- ~

NE SSITY TO ENaOSE THE PEN'TRATION HOUSING WITH A l ONE-HOUR RATED FIRE BARRIER.

4

, --v.~, - - - - - - - - - - - -

ee ,. e - - - - - m--- - - - -, -- - --v -- - - --- --------- -

FIRE AREA: RB1 DESCRIPTION: AUXILIARY BUILDING E0iANICAL PENETRATION AREA l l

EXEWTION FROM APPENDIX "R", SECTION III.G.2 i

SEPARATION: HALL OPENING TO F.A. RB2 WITH PARTIAL AREA SUPPRESSION, CABLE TRAY FIRE BREAKS (20 FEET APART) APO A HORIZONTAL SEPARATION OF APPROXIMATELY 40 FEET SUPPRESSION: TWO FIRE HOSE STATIONS WITH PARTIAL AREA SPRINKLER SYSTEM DETECTION: IONIZATION SMOKE DETECTORS REDUlOANT 00WONENTS: HPI RJMPS 2

FIRE LOAD: 6,440 BTU /FT 4.8 MINUTES JUSTIFICATION FOR EXEWTION:

PARTIAL AREA SUPPRESSION, FIRE BREAKS, DETECTION, AND LACK 0F COEUSTIBLE LOADING PRECLUDES THE NEED FOR A FIRE

~

RATED BARRIER.

I l

l l

FIRE AREA: VARIOUS DESCRIPTION: CONDUIT PENETP'.: IONS THROUGH FIRE BARRIERS EXEWTION FROM KPENDIX "R", SECTION III.G.2 I SEPARATION: SMOKE AND GAS SEAL AT OPENINGS OR FIRST AVAILABLE FITTING FROM FIRE BARRIER SUPPRESSION: N/A DETECTION: N/A REDUPOANT COWONENTS: N/A 2

FIRE LOAD: N/A BTU /FT N/A MINUTES

,_ JUSTIFICATION FOR EXEMPTION:

._ y

~ '

LACK OF EARLY SPECIFIC REQUIREENTS LED TO RANCHO SECO'S PROGRAM TO VERIFY AND SEAL CONDUIT PENETRATIONS AS DESCRIBED IN COEUIT FIRE STOP DETAILS. THE DISTRICT CONCLUDES THAT THIS EETS THE REQUIREENT OF 10 CFR S0.48, APPENDIX R.

e

FIRE AREA: RB2, RG1, AND RM1 DESCRIPTION: HVAC PENETRATIONS EXE WTION FROM APPENDIX m", SECTION III.G.2 SEPARATION: UNRATED HVAC DUCT PENETRATIONS THROUGH VARIOUS FIRE BARRIERS SUPPRESSION: RB2 - PARTIAL AREA SPRINKLERS MD MANUAL HOSE STATIONS

RG1 - FULL AREA SUPPRESSION MD MANUAL HOSE STATION RM1 - FULL AREA WETPIPE OR AUTOMATIC CD2 WITH MANUAL HOSE STATIONS DETECTION: RB2 - IONIZATION SMOKE DETECTORS RG1 - IONIZATION SMOKE DETECTORS RM1 - IONIZATION SMOKE DETECTORS REDUEANT (DWONENTS: AFW CIRQJITS MD HPI/ MAKEUP CIRQJITS 2

FIRE LOAD: RB2 - 7,750 BTU /FT RB2 - 6 MINUTEE RG1 - 18,220 BTU /FT2 RG1 - 13.8 MINUTES RM1 - 72,450 BTU /FT2 RM1 - SS MINUTE

, JUSTIFICATION FOR EXEWTION:

SUPPRESSION, DETECTION, AND SUBSTANTIAL ETAL BARRIER WILL ENSURE ADEQUATE SEPARATION.

- s-MEETING

SUMMARY

DISTRIBUTION Licensee: Rancho Seco

'* Copies also sent to those people on service (cc) list for subject plant (s).

Docket File NRC PDR L PDR ORBf4~Rdg-Project Manager - S.. Miner JStolz BGrimes (Emerg. Preparedness only)

. , OELD EJordan, IE ACRS PMorriette NRC Meeting

Participants:

'R. Ferguson J. Stang V. Benaroya J. Wilson

.J. Holonich 6 -

e F

i 1

i 1

.