ML18044A565
| ML18044A565 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 02/22/1980 |
| From: | Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8002260148 | |
| Download: ML18044A565 (7) | |
Text
consumers Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201 * (617) 788-0660 February 22, 1980 Director, Nuclear Reactor Regulation Att Mr Dennis L Ziemann, Chief Operating Reactors Branch No 2 US Nuclear Regulatory Commission Washington, DC 205,55 DOCKET 50-255 - LICENSE DPR PALISADES PLANT - FIRE PROTECTION MODIFICATIONS The Fire Protection Safety Evaluation (SE) for Palisades, forwarded with Amendment 42 to License DPR-20, required that additional information be submitted regarding certain proposed modifications~ In a telephone conversation with Consumers Power Company (R Huston) on February 11, 1980, NRC (H George) provided additional clarification regarding the specific information to be submitted.
This letter provides a portion of the requested information.
Fowarded as attachments to this letter are the descriptions and additional information required for the following items of the Fire Protection SE:
\\
Location, design density, and method of actuation -of ad,ditional sprinkler heads to be installed.
~
Description of fire barrier penetration fire stops and ref_erence to qualification testing.
Description of containment building cable tray fire stops.
~1~!#/f~\\4' David P Hoffman Nuclear Licensing Administrator CC JGKeppler, USNRC Attachment (6 Pages) 8 0 02 260\\48
LOCATION, DESIGN AND METHOD OF ACTUATION OF ADDITIONAL SPRINKLER HEADS TO BE INSTALLED Sprinkler systems will be installed in the following areas:
- 1.
Switchgear Room 1-D.
This augments an existing.system.
- 2.
Intake structure protecting service and fire water pumps.
- 3.
Fire pump diesel day tank room.
- 4.
Condensate pump area.
- 5.
Track alley (dry-pipe system)..
1 The location of new sprinkler heads in each of these areas is shown on the attached drawings (Dwg No 1000564 and No 1000640).
The design density of each of these installations is 0.2 gpm/ft 2
- The heads are actuated by fusible links at a temperature of 160°F.
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DESCRIPTION OF FIRE BARRIER PENETRATION FIRE STOPS AND REFERENCE TO QUALIFICATION TESTING Consumers Power Company lett.er dated September 29, 1978 submitted reports of qualification testing of several fire stop designs.
Fire barrier penetration fire stops will be of the marinite board, Kaowool and flammastic materials as specified in the reports submitted.
DESCRIPTION OF CONTAINMENT BUILDING CABLE TRAY FIRE STOPS 2
Cable tray sections (Numbers 4CP200, 4CV200, CP250, CV250, CASOO, CH510, CK515, CPSlS and CV515) which communicate between the left and right cable tray systems will be fitted with fire stops.
These stops ar~ intended to prevent a fire originating in one tray system from traveling along an interconnecting tray and affecting the other tray system.
The fire stops will be installed according to the attached drawings (Dwg E-42, Sheets 30A and 30B).
In addition to the installation shown on the attached drawings, the top, bottom, and longitudinal sides of the cable tray section containing the fire stop (four feet in length) will be encased with 1/2-inch marinite sheets.
/
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- RA REV
- r10, BY ALTE~TE FIRE STOP FOR CABLES ONLY ~
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1-4" (NOMINAL)---i
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C!X}) TOP KAOWOOL LAYER 0 APPROX. AT CENTER OF INNER AND TOP LAYERS*
PLAN V.IEW,
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METAL STRAPS~.
- INNER KAOWOCL LAYER~
CABLE TRAY.
TOP KAOWOOL LAYER CABLE.. TRAY OVERLAP ENDS OF INDIVIDUAL LAYER 8 11 MIN. NOM.
CABLE TRAY LADDER RUNG l-~~~~:::::::::::l-- METAL STRAPS~
INNER KAOWOOL LAYER NOTES:
.SECTION A-A
- 1.
CERAMIC FIBER INSULATION, KAOWOOL AS MANUFACTURED BY BABCOCK & WILCOX, OR APPROVED EQUAL, IN THE BLANKET FORM WITH A DENSITY OF 8 LB PER CU. FT.,
A THICKNESS OF 1-1/2 11, AND A WIDTH OF 4'-0 11
- 2 STRAPPING MATERIAL 3/4 11 WIDE REGULAR DUTY MATERIAL WITH A NOMINAL THICKNESS OF 0. 020 11 WITH A GALVANIZED FINISH AS 1'4.A.NUFACTURED BY STANLEY, OR APPROVED EQUAL STRAPS SHALL BE PLACED AT EACH ENO AND THE CENTER OF EACH LAYER
{INNER AND TOP). *
- 3.
VOIDS BETWEEN CABLES SHALL BE PACKED WITH KAOWOOL A MINIMUM DISTANCE OF 6" AT THE ENDS OF THE FIRE STOP.
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- 4.
LIFT CABLES *up FROM TRAY, BUNDLE CABLES TOGETiiER AND WRAP INNER LAYER AND STRAP WITH METAL STRAP.
WRAP TO? LAYER, STRAP WITH METAL STRAPS AND SET THE COMPLETED FIRE STOP ANO CABLES BACK DOWN INTO CABLE TRAY.
lS°/3/Tt issueo FoR CONSTRUCT\\ON' MOD 13 o.c.:r. SF r.,f'?
()>_/};; UvJ 3/23/71 CON oT.
- DW6.I SS-UED -
REVIEW~ COMMENT M.S IF
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DATE DESCRIPTION O*AW*
OC*tUN c... ccc
,,.~.,o o~
DATE REVISIONS SY OfK AP?R
- Nuclear Services Corporation.
FOR ORIGIN PALISADES PLANT JOB NO. 5221 CONSUMERS Pm'>IER COMPANY BECHTEL NO.G) E42 R[V OiK DATE
- DWG, I
CONDUIT AND CABLE TRAY NOTES, SYMBOLS AND DETAILS SHEET 308 0
- -**~*** -**-
CABLE TRAY' CABLE~Y (LADDER TYPE) FIRE STOP 4'-0" PLAN VIEW.
KAOWOOL BLANKET THICKNESS AS WRAPPED AROUND. CABLE TRAY, OVERLAP ENDS OF INDIVIDUAL LAYER 8 11 MIN NOM.
REQUIRED TO FI LL CABLE TRAY rr--~----_.;;::,......,,,. __ _,
RA 1 3 i-+--"7--METAL STAAPs{D llls.m=-r:~~=-;i;;;;;;;~=:I OUTER INNER KAOWOOL LAYER CABLE TRAY CABLE' TRAY LADDER RUNG NOTES:
. SECTION A-A.
- 1.
CERAMIC FIBER INSULATION, KAOWOOL AS MANUFACTURED BY BABCOCK & WILCOX, OR APPROVED EQUAL, IN THE BLANKET FORM WITH A DENSITY OF 8 LB PER cu~ FT.,
A THICKNESS OF 1-1/2 11*, AND A WIDTH OF 4'-0 11 *
- 2.
STRAPPING MATERIAL, 3/4 11 WIDE REGULAR DUTY MATERIAL WIIB A NOMINAL THICKNESS OF 0.020 11 WITH A GALVANIZED FINISH AS MANUFACTURED BY STANLEY, OR APPROVED EQUAL.
STRAPS SHALL BE PLACED AT EACH END AND THE CENTER OF EACH LAYER
{INNER AND OUTER).
- 3.
. VOIDS BETI~EEN CABLES SHALL BE PACKED WITH KAOWOOL A* MINIMUM DISTANCE OF 6
11 AT THE ENDS OF THE FIRE STOP~
ISSOeD FOR CON5TRl.lCTION MOO 13
. DWG. TS.SUED-REVIEW.t COl'{\\MENT REV DATE DESCRIPTION NO, DATE ORIGIN BY 00:
DATE BECHTEL REVISIONS BY Nuclear Seroices Corporatwn.
JOB NO. 5221 PALISADES PLANT CONSUMERS Pm*JER COMPANY
~
CONDUIT A'ND CABLE TRAY NOTES' DWG I NO I E42 I RE:_
SYi*'.SOLS AND DETAILS SHEET 30A 0
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