ML19296C666
| ML19296C666 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/21/1980 |
| From: | Daltroff S PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Ippolito T Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19296C667 | List: |
| References | |
| NUDOCS 8002270414 | |
| Download: ML19296C666 (9) | |
Text
1 PHILAD ELPHI A ELECTRIC COM PANY 2301 M ARKET STREET P.O BOX 8699 PHILADELPHI A. PA 19101 sH' ELDS t Datracrr at5: e41 soot attcrp c pe c y o.,
February 21.
1990 Re: Docket Mos. 3C-277 50-273
'! r. Thonas A.
Ippolito. Chief Operating Reactors Branch 93 Division of Operating Reactors US Nuclear Regulatory C onmi s s ion
'7 ash in z t on, DC 20555
SUBJECT:
Peach 3otton Fire Protection Program
References:
- 1) Letter dated December 20, 1913-S.
L.
- Daltroff, Philadelphia Electric Company to T.
A.
Ippolito. NRC
- 2) Letter dated February 16. 1979 S.
L.
Daltroff.
Philadelphia Electri. Conpany to T.
A.
- Ippolito,
'! it C
- 3) Letter dated tay 23. 1979 T.
A.
I p r. o l i t o. NRC to E.
G.
Bauer, Philadelphia Electric Company Dear '!r.
Ippolito:
The implenentation schedule in the Safety Evaluation Rep ort (SER) transmitted in reference (3) above requires the submittal of design inf orma ti on to the NRC f or selected fire p r o t e c t i.oa modifications by February 23, 1980.
This information is provided in Attachments I through 4.
Installation of these fire protection systems described in Attachnents 1 through 3 will be initiated after NRC approval of the design as specified in the SER implementation schedule.
The control of combustible sodifications described in Attachment 4 will be c omp le t e d by November 23, 1980.
Attacament 5 describes our p rop osal f or additional fire p rot ect ion in the Reactor Recirculation Pump ?!-G h0k set rooms as requested in the SER, Section 3.2.4(2).
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Mr.
T.
A.
Ippolito, Chief Page 2 The information provided is as follows.
E n c l.o s u r e _s.
Subject S E_R_ i t__e m At*
ent 1 Fire Protection Systems 3.1.1, ( 1 ) -( 3 ) & (5)-(10)
Att
.nent 2 Unter Suppression 3 1 2A Systems Attachrent 3
.:echanica l Pene t ration 3.1.7 Seals Control of Combustible 3.1.11(1)
Fire Protection-NG Sets 3 2.4(2)
Also enclosed for y ou r inf ormation are:
1.
Fire Endu rance and Hose Stream Tests (Designs UP 454 and UP 455) April 26, 1973 2.
Fire Endurance Tests (Desians FC 258, FC 259 and FC 260) 'i a y 10, 1978.
3.
Drawings A-25G, M-13G, M35G, M-572, M-1341-0, S-86G, S-46G, S-551G In Section 3.1.5(2) of the SER you requested information regarding the corrective action planned to up3rade the doors to the condensate pump rooms at the Peach B ot t om f acility.
As we advised y ou in a letter dated September 15, 1977 from S.
L.
Daltrorf to George Lear, the louvers on the condensate pump room doors leading to the corridor on elev. 116' have been removed.
the gap filled with kaowool insulation, and steel plates nounted on both sides of the door for support.
This nodification was c omp le t e d on August 17, 1977.
This corrective action should provide satisfactory resolution of this matter.
Please contact us if additional discussion of these matters is necessary.
Very t ru ly yours, l
~
m.;
a Enclosure
ATT AC!!. ;NT 1 FI3E DETECTION DESIG!:, UNIT 2 (UNIT 3 SIMILAR1 The number and location at
- moke detectors are based on the following criteria:
1.
Combustible loading
- The type and quantity of combustible material was considered tor each area.
The typical combustibles were lube and/or tuel oil and cable jacketing.
2.
Ventila tion characteristics - Detector location was selected to take advantage of exhaust air flows.
Air flow patterns and velocities were addressed to assure as nearly as i
practical early detector activation.
3.
Roon sine and geometry Room size and geometry were addressed, particularly ceiling construction.
The location and depth of beam pockets were a primary concern in detector location.
}
4.
hcom congestion The amount of cable tray, ductwork and piping was reviewed in order to properly locate the detectors.
The following fire areas have been evaluated per our SER cocaitments:
RHR Pumo and HX Rooms, Areas 1,
2, 3 - Three ionization type i
smoke detectors will be added in each fire area.
The combustible material in the areas includes cable jacketing i
and hHk pump motor lube oil.
Two detectors will be added l
tor general area protection and will be located in pockets tormed by exposed structural members at the ceiling.
The th_rd detector will be located on the bottom flange of an exposed structural member to take advantage of the ventilation exhaust ilow.
See drawing S-46G.
g RHR Puta and HX Boom, Zone 4A - Two ionization type smoke cetectors will be added in this fire zone.
The combustible material in the Zone is Cabling and pump motor lube oil.
The detectors will be located to provide area protection.
The ceiling construction in this area is smooth.
See drawing M-411G.
7CIC aump Room, Area 60 - Same requirements and details as Zone 4A.
See drawing 3-13G.
Core S p r a y._ P u m p_jt o o m s,_ _.Z o_n e s _5 A,
S B,, _ S D,_ S E_
The coubustibles in the small rooms consist or pump motor lube oil and cable jacketing.
A single ionization type smoke detector will be placed in each room.
See drawing M-13G.
ATT ACliM E U T 2
'a A T E R SU P PR ESSION_ g Y ST EM S DESIGN A.
Turbine Building - 116' Switengeur Area, Zone 78b
.he Safety Evaluation heport issued by the N.R.C.
on May 23; 1979 provides the option or either Installing water suppress;on tire protection in this area, or permanently relocating the anti contamination clothing to an area separated : rom sateguard equipaent by a 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> fire barrier.
We have elected to remove the anti-contamination clothing Irot this area (roo:.s 126 and 186) in lieu of providing a water suppression systen.
This action was taken during the rpring or 1979.
Additionally, we propose to provide early warning detection in the area of the satety related cable as previously detailed in our February 16, 1979 response to Statt Position PF-37 (a).
3.
Cooling Water Equipment
- Rooms, Cones 45, 12B, El. 116' (Reactor Recirculation Putp Motor Generator Set Lube Oil Pump Rooms).
The puaps are located inside a diked area sized to contain the entire oil quantity or one iluid drive anc 20 minutes of sprinkler flow at
.3 GPM/FT A
preaction sprinkler system will be installed to protect each diked area.
Flow control valve actuation will be by two smoke detectors located over each diked area.
The smoke detectors will be tied into the existing plant tire alars system.
A preliminary dra wing,
M-1341-0, is attached for information.
C.
Radwaste Baling Area, area 72A The radvaste baling and compacting area was provided with sprinkter protection prior to issuance of the Satety Evaluation Report.
A wet pipe systec is installed providing coverage of approximately
.2GPM/it.
A tlow dlarm
'v&lVe is tied into the station rire alare system.
Letails of the installing are shown on the attached drawing, 3-572, M45-82-2.
.I,'-
gnclosed__, Rooms _ within_
thi-Control Room,.
Area _ 108_ -
loniza t.on type smoke detecto t s w ill be used in each or the enclosed rooms within the Control Room excluding the lavatory.
Six detectors will be installed as shown on drawing A-256.
Diesel Generator hooms, Areas 132, 133,,134, 135 - We have reevaluated the existing Ilre detection systen and propose to leave the existing system in tact.
No new smoke detectors will be added.
Contrary to the Peach Botton Fire Protection Prcgram Re po rt Jwg. A172, four heat detectors are located in each diesel generator room instead of two.
The heat detectors are cocbination rate of rise and tixed temperature.
The signitcant combustible loading in the diesel rooms is fuel and lube oil.
Any fire, will be a hot, fast developing rire.
The rate or rise detection (15 /cin) vill detect a tast developing tire while the ilxed temperature detection will alarm a slower developing tire.
The addition of early warninc smoke detectors to the diesel rooms would cause an unnecessary operation problem due to false alarms caused by the scoke generated during diesel start-up and operation.
Diesel Generator Auxiliary Ro o,p_,
A r e a 146 1hree ionization type smoke detectors will be added.
The significant combustible in this area is ruel oil.
The auxiliary boiler fuel oil transrer pump is located in the area.
Ine detectors will be located as shown on drawing S-551G.
High Pressure Service Water Pump Room,__ Areas 143_,__144 - The fire detectors in the HPSW pump area will be replaced with ionization type smoke detectors.
B a t te ry_R o_om s,
A r e a s _1 1__7,_ _1 1_8_,_
127,_128 -_Two ionization type smoke detectors will be located in each battery room.
The detectors will be located in available space per the criteria itemized as our basis for detector selection and location.
hoon conjestion necessitates a
fit to suit installation in the rield.
The appropriate drawings will be revised atter detector installation.
Cable Spreading Room, Zone 76H - Twenty one ionization type smore cetectors will be added to the two existing detectors.
The detectors are located in beam pockets at the ceiling per NFPA guidelines.
See drawing S-d6G.
ATTACHMEri 3
MECHANICAL PENET'ATION SEALS A program has been establishoc and initiated to identity all techanical penetrations which are not sea led in safety relatec areas and areas containing signi:icant combustibles.
Data has been compiled icentirying open pipe sleeves and/or unsealed ventilation duct penetrations.
The unsealed penetrations will be evaluated to identity which ones require sealing.
The criteria ror evaluating if a
penetration requires upgrading will be as follows:
a)
Significant combustible material is present on both sides of the penetration.
b)
The penetration separates areas with a
heavy combustibles loading Irom sa f ety-related areas.
c)
The penetration is in a
barrier isolating an area containing safe shutdown equipment (as detailed in our July 3,
1979 response to Statt Position PF-26) from areas containing comburtibles in an amount and arrangement deemed harardous.
Existing penetrations ror which no test da ta is available will be reviewed and their suitability will be based on conbustible
- loading, similarity of seals to " tested seals" and engineering judgement.
Penetrations which require upgrading will be sealed using penetration details which have been tested in accordance with ASTM E-119 and have been accepted by American Nuclear Insurers.
To reiterate our comments in the 90 and 30 day responses, we stated that we would make use of the penetration seal being designed and tested by the Architect Engineer for our Limerick Station when it becomes available.
The test program was established prior to the adoption or IEEE 634-191o-1EEE Standard Cable Penetration Fire Stop Qualitication
- lest, and does not incorporate all of the requirements of the standard, nor all or the requirements or the Staft Position PF18.
In their letter to Philadelphia Electric Company of June 17, 1977, the Architect Engineer stated that American Nuclear
- Insurers, Nuclear Mutual Limited and the NEC had all reviewed the test procedures and were satisfied with the testing program.
The program met the standards existing at the time or its inception.
'he signiticant ditterence between our testing program and T
the Nhc guidelines concerns the requirement that the maximum expected pressure differential be applied to the penetration during the test.
A pressure test is provided by the hose stream which is performed following the fire test. The hose stream test pressures are more severe than normal plant dif:erential pressures which are less than 0.5" water.
iy-Attnched is a
copy or the detailed procedures and test results, including test contimita tions and bills of material
- or the wall and rioor tests.
This information is presented in the rollowing documents:
1.
fine Endurance "ests on S11icone
- Foam, Ceramic
- Fiber, CellChr concrete and Marinite XL Panel Penetration Seals in Masonry
?loors (Designs
- FC258, FC259 and FC260) May 10, 1976.
2.
Fire indurance and lio se Stream Tests on Silicone Foaa, Cerumic
- Fiber, Celluar Concrete and Marinite XL Panel Penetration Seals in Hasonry Walls (Designs WP 454 and WP455)
April 26, 1978 The test information gathered will form the basis for seal desian at Peach Bottom.
One item to note is that a
hose stream
_est was not performed on the floor test assemblies.
The absence or a hose stream test in our loor tests was discussed with and accepted by ANI prior to the tests.
" heir acceptance or this omission was based on successrul hose stream tests against firestops of a
similar configuration included in the preceeding wall tests.
It was understood by ANI that the proportions and weight of the Iloor test assembly and the physical limitations or its handling equipment, restricted its orientation' to the horinuntal plane.
Due to distance and angle requirements of the hose stream test criteria, such a test was considered by the testing organization to be unachievable and hazardous In light or these arguments, ANI accepted the previous wall hose stream tests as adequate evidence ot periurmance.
11 ATTACHME!!T 4 C0:J T h 0 L OF CO:> 30STIBLES
..csel Generator Rovas, Arnau 132, 133, 134, 135 A
curb will be provided in euch room to prevent the ilow of co$bustible liquids between the diesel.
generator rooms at elevacion 1278 The cou.bustible luids in the room are diesel fuel and diesel lube oil.
The itel oil is located in a
550 gallon day tank which is located inside its' own 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> rated enclosure within each roon..
The day tank enclosures are designed to hold 110% tank capacity should a line break or a tank rupture occurr.
The lube oil is stored in a 240 gallon lube oil tank adjacent to the diesel.
There are six 2" oily waste drains located in the vicinity or each diesel.
These teed a 4"
drain 11ae.
A conservative estimate of the amount of oil which would collect in the area is 990 gallons, the quantity of the day tank and the lube oil.
The cur b will be placed in the room at a location which will contain the oil yet not provide a
tripping harard.
The tocation is shown on the drawing 5-35G, attached.
The preliminary design provides for installation of a 2" angle with appropriate caulking, tor oil retention.
l.
ATT ACllM E..T 5 Firt Protect 1,on___iMactor.ecirculation Pump M-G Set Rooms, Areas 4c, 12c The n.otor generator sets ror both recire. pumps are located in a single tire zone.
The M -G set iluid drives contain approximately 1100 gallons or hydraulic :luid.
Dikes will Le placed around the iluid drives to contain any hydraulic iluid associated with a pipe rupture or leak.
A preaction water spray systes will be installed with directional nozzles, to protect the diked area.
The ilow control valve or the system wil.1 be actuated by existing ionization type smoke detectors located above the M-G sets.