ML20155G451
| ML20155G451 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 11/02/1998 |
| From: | Sorensen J NORTHERN STATES POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9811090055 | |
| Download: ML20155G451 (39) | |
Text
_- _
Northern States Power Company Prairie Island Nuclear Generating Plant 1717 Wakonade Dr. East Welch, Minnesota 55089 l
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- November 2,1998 1 U S Nuclear Regulatory Commission l Attn
- Document Control Desk l Washington, DC 20555 l t
PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 l 50-306 DPR-60 Response to Request for Additional information Concerning the Prairie Island Nuclear Generating Plant Request for Exemption from 10 CFR Part 50, Appendix R, Section Ill.G.2," Fire Protection of Safe Shutdown Capabilities" i
By letters dated August 14,1997, and April 16,1998, Northern States Power Company (NSP) requested exemptions from the technical requirements of Section Ill.G.2 of 10 CFR Part 50, Appendix R. By letter dated September 17,1998, the NRC requested additional information concerning this exemption request. Attachment 1 to this letter is NSP's response to the NRC Request for Additional Information.
. in this letter we have made no new Nuclear Regulatory Commission commitments.
Please contact Jeff Kivi(651-388-1121)if you have any questions related to this letter.
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Joel P. Sorensen BR Plant Manager l Prairie Island Nuclear Generating Plant !'
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9811090055 901102 PDR h
ADOCK 05000282 F pop ,
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i USNRC NORTHERN STATES POWER COMPANY 4
November 2,1998 Page 2 4
1 c: Regional Administrator- Region Ill, NRC
- Senior Resident inspector, NRC 1
NRR Project Manager, NRC
- J E Silberg 1
1 Attachments:
i 1. Response to Request for Additional Information Concerning the Prairie Island
- Nuclear Generating Plant Request for Exemption from 10 CFR Part 50, Appendix R, Section Ill.G.2, " Fire Protection of Safe Shutdown Capabilities"
- 2. Installation Detail Drawings Associated with Each Installation of the Rockbestos
. Firezone R Cable 1 3. Rockbestos Firezone R Cable Routing Sketches
- 4. Letter from Rockbestos dated October 27,1998 l 5. Manufacturers Catalog Specification Sheet 1
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l ATTACHMENT 1 Response to Request for Additional Information Concerning the Prairie Island Nuclear
. Generating Plant Request for Exemption from 10 CFR Part 50, Appendix R, Section Ill.G.2," Fire Protection of Safe Shutdown Capabilities" 9 i l
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Attachment 1 November 2,1998 Page 1 Question 1: Provide detail drawings or diagrams that depict the routing of the Firezone R cables and the basic features (equipment, storage, components, etc.) of the fire areas through which the Firezone R cables willpass. Provide a detailed description of the configuration that the Firezone R cable will be in, the type of the cable (e.g., 3C14 AWG), and the expected service loads that will be required of the cables (voltage and current). State the function of each cable, i.e., power, control, orinstrumentation.
Presently,10 control circuit cables required for safe shutdown are routed using Rockbestos Firezone R cable. Per the definition of control cables used at Prairie Island all control cables are a nominal 120/125 volts (AC or DC) and 30 amps or less. All presently installed Firezone R cables are 1-7/C-14 AWG stainless steel armored cable.
Refer to attached manufacturers catalog specification sheet (Attachment 5] for specific construction details of the cable. The following table describes the basic application for each present installation:
Cable No. Application Fire Area Voltage Max. Current
- 1CA-1133 Pressurizer PORV SV-31232 FA 59 125 VDC 5 amps 1CB-928 Pressurizer PORV SV-32231 FA 59 125 VDC 5 amps 2CA-522 Pressurizer PORV SV-31234 FA 74 125 VDC 5 amps 2CB-472 Pressurizer PORV SV-31233 FA 74 125 VDC 5 amps 1K1-21 A 12 Charging Pump. FA 58 120 VAC 4 amps 1CA-91 12 Charging Pump. FA 58 120 VAC 4 amps 1CA-92 12 Charging Pump. FA 58 120 VAC 4 amps 2K1-5A 22 Charging Pump. FA 73 120 VAC 5 amps
. 2CA-148 22 Charging Pump. FA 73 120 VAC 5 amps 2CA-162 22 Charging Pump. FA 73 120 VAC 5 amps
- Based on fuse protection.
Refer to attached installation detail drawings associated with each installation of the Rockbestos Firezone R cable [ Attachment 2). Each cable is installed in steel conduit through the fire area of concern. For clarity and greater detail, the approximate routing is also sketched on area layout drawings [ Attachment 3]. Any potential future use of Firezone R cable in these areas as well as other areas for which exemption is requested is presently undefined.
The following is a brief description of each fire area:
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2 Attachm nt 1 November 2,1998 i
Page 2 Fire Area 58 (Zone 8) Auxiliary Building 695' elev. Unit 1 and Fire Area 73 (Zone
- 40) Auxiliary Building 695' elev. Unit 2:
- 1. Combustible Load:
Combustibles in this area include cable, pump oil, and miscellaneous material. The fire load in this area is Very Light. (less than 40,000 BTU /ft2) a 2. Fire Detection:
Fire Detection in the area uses lon detectors in the ceiling area near the cable trays.
Refer to fire area layout drawings in Attachment 3 for approximate number and location of detectors in the area (identified as a hexagon with the identifier " ion").
- 3. Fire Suppression:
Fire Suppression in the area is provided by manual suppression using CO2 fire
, extinguishers and hose stations. Refer to fire area layout drawings in Attachment 3 for approximate number and location of fire suppression equipment in the area. Wet pipe sprinkler systems protect the elevator and stairwell areas.
- 4. Cable Susceptibility to Fire:
A fire in this area will be a low intensity. Cables are fire resistant IEEE 383 qualified cable. This limits the susceptibility of the cables to fire.
- 5. Redundant Train Susceptibility to Fire:
USAR required redundant cable tray train separation is maintained in the area. The area is highly compartmentalized. These factors ilmit the susceptibility of both trains to sustain damage in a single fire.
- 6. Existing Personnel Controls on the Area:
The Auxiliary Building Operator is stationed in this area and typically walks the area down at least twice per shift (four times per 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period) to verify that all fire doors are closed, doors are free of obstruction, removal of combustible material, and any abnormal conditions. This is a vital area and a radiological controlled area with limited access for plant personnel.
- 7. Existing Administrative Controls on the Area:
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h Attachm:nt 1 November 2.1998 Page 3 Existing procedure 5AWI 3.13.2, Fire Preventive Practices, controls the intrusion of transient combustible material in safety related areas, Identifies the requirements for Combustion Source Use Permits (CSUP) when the allowable level of transients are exceeded or an ignition source is used in a safety related area.
Existing procedure 5AWI 3.2.4, Conduct of Work, controls the conduct of work, the removal of fire protection equipment from service, consideration of equipment out of service or affected by NCR's, and the need for Pre-Job Briefings.
F5 Appendix K requires fire detection instruments to be operable in this area. If the detection criteria cannot be met for this area an hourly fire watch shall be established until detection is restored.
Fire Area 59 (Zone 19) Auxiliary Building 715' elev. Unit 1 and Fire Area 74 (Zone
- 46) Auxiliary Building 715' elev. Unit 2:
- 1. Combustible Loading:
Combustibles in this area include cable and miscellaneous material. The fire load in this area is Very Light. (less than 40,000 BTU /ft2 )
- 2. Fire Detection:
Fire Detection in the area uses ion detectors in the ceiling area near the cable trays.
Refer to fire area layout drawings in Attachment 3 for approximate number and location of detectors in the area (identified as a hexagon with the identifier " ion").
- 3. Fire Suppression:
Fire Suppression in the area is provided by manual suppression using CO2 fire extinguishers and hose stations. Refer to fire area layout drawings in Attachment 3 for approximate number and location of fire suppression equipment in the area. Wet pipe sprinkler systems protects the elevator, stairwell areas, penetration cabinets and the anti-C storage rack located on the Unit 1 side.
- 4. Cable Susceptibility to Fire:
A fire in this area will be a low intensity. Cables are fire resistant IEEE 383 qualified cable. This limits the susceptibility of the cables to fire.
- 5. Redundant Train Susceptibility to Fire:
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I Attachm:nt 1 November 2,1998 Page 4 USAR required redundant cable tray train separation is maintained in the area. This limits the susceptibility of both trains to sustain damage in a single fire.
- 6. Existing Personnel Controls on the Area: l l
The Auxiliary Building Operator is stationed in this area and typically walks the area !
down at least twice per shift (four times per 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> period) to verify that all fire l doors are closed, doors are free of obstruction, removal of combustible material, and ;
any abnormal conditions. This is a vital area and a radiological controlled area with limited access for plant personnel. ,
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- 7. Existing Administrative Controls on the Area:
Existing procedure 5AWI 3.13.2, Fire Preventive Practices, controls the intrusion of transient combustible material in safety related areas, identifies the requirements for Combustion Source Use Permits (CSUP) when the allowable level of transients are exceeded or an ignition source is used in a safety related area.
Existing procedure SAW13.2.4, Conduct of Work, controls the conduct of work, the removal of fire protection equipment from service, consideration of equipment out of service or affected by NCR's, and the need for Pre-Job Briefings.
F5 Appendix K requires fire detection instruments to be operable in this area. If the detection criteria cannot be met for this area an hourly fire watch shall be established until detection is restored.
Question 2: The Underwriters Laboratories (UL) test report on Rockbestos Firezone R Cable did not state the test standard to which it was conducted, the acceptance criteria for the tested cables, orinclude a detailed test plan or test protocol. Please provide these elements.
Refer to attached letter from Rockbestos dated October 27,1998.
Question 3: The UL test further states that leakage current measurements were taken during the full-scale fire test of the Rockbestos cable. The numericalresults of the leakage current measurements were not recorded in the report. Provide the numerical values forleakage current in the Firezone R cables that were monitored during the test.
Refer to attached letter from Rockbestos dated October 27,1998. ;
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Attachment 1 November 2,1998 Page 5 1
Question 4: The UL fire test tested specific sizes ofinstrument and power Firezone R
. cables. Demonstrate how the sizes of Firezone R control cables, which you propose to Install, are bounded by the test.
Refer to attached letter from Rockbestos dated October 27,1998.
Question 5: State whether there are any non-continuous cable runs of Firezone R ,
cable (i.e., splices) in the proposed applications, and if so, Justify how they are bounded by the UL fire test.
. All existing installations of Rockbestos Firezone R cable are continuous runs devoid of splices within the fire area of concern.
I Question 6: Provide clarification as to how the fire test report FCT/94/0060 from l Darchem Industries (Attachment 3 to your submittal) demonstrates that the use of l unprotected unistrut for raceway support is acceptable. l The referenced fire test report (FCTR/94/0060) is a typical fire test conducted by Darchem Engineering for qualification of various configurations of Darmatt KM1 Fire Barrier material to ASTM 119 per the requirements of GL 86-10, Supplement 1. It was not specifically a test of the unistrut support systems, however the ability of an unprotected unistrut support to meet the design criteria of GL 86-10, Supplement 1, can easily be inferred by the results of this test.
On page 11 of the test report, section 6.1 describing the Installation of the electrical raceway states:
"All raceways included a support at the centre of the horizontal run comprising of a P1001 unistrut suspended from the furnace roof."
In Appendix A of the test report,in Figures ia and ib, the raceway construction and wrap details are shown. - The tray support is a typical trapeze type tray support constructed from sections of P1001 unistrut channel material. To be noted here is that the wrap on the unistrut support only extends part way up the support. The support is wrapped only as a thermal short for approximately 12 inches from the interface with the tray. It should also be noted from these figures that the unistrut support is the sole means of support for the tray system within the furnace. In addition, photographs listed as Frame 4 and Frame 8 in Appendix E clearly show only partial wrapping of the support.
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i Attachment 1 November 2,1998 Page 6 The fire test was conducted in two phases. The first phase was a test-to-failure of the 1-hour wrap system consisting of a 90 minute burn following the ASTM 119 curve. The test went the full 90 minutes and the test raceway was still intact at the completion of the test. This implies that the unprotected portion of the support did not fail. The
- second phase of the test (described in Addendum 1 of the test report) consisted of re-l i testing the existing tray system without cables installed and refitted with new wrap '
material. This test consisted of a 30 minute burn, following the ASTM 119 curve,
, followed by a 5 minute hose stream spray. The test fixture is then allowed to dry (with no changes to the construction) and then re-fired for 60 minutes, again following the j ASTM 119 curve, followed by another 5 minute hose stream test. Following the second j
- firing and second hose stream application the test configuration is still intact further j implies that unprotected unistrut supports will remain functional during the testing requirements of GL 86-10, Supplement 1. We may, therefore, conclude that unprotected steel unistrut supports are adequate to support both cable tray and conduit
-loads during fires bounded by the ASTM 119 profile. l I
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ATTACHMENT 2 i
Installation Detail Drawings Associated with Each Installation of the Rockbestos Firezone R Cable 1
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I ATTACHMENT 3 Rockbestos Firezone R Cable Routing Sketches l
1 l
UPDATED P.I. OPNS F5 App::ndix A l Rev. 5 Page 1 of 10 l
4 FIRE DETECTION ZONE 8 ,
FIRE AREA 58 and Part of 73 4
W 4
i 4
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F5 App;ndix A FIRE DETECTION ZONE 8 RLv. 5 Page 2 of 10 l
l FIRE AREA (Sk 58 and Part 73 LOCATION: Auxiliary Building Ground Floor, El. 695' EMERGENCY LIGHTING: Yes - plus 8 hr.
1 TYPE OF FIRE; Cable - Oil PERSONNEL HAZARDS; Surface Contamination l Possible High Airborne Activity I Spills 900 gas - gases treated prior to release j
. COMMUNICATIONS: Dial telephone Gal-traonics page Sound powered, phone jackbox FIRE EQUIPMENT: Stairway Wet Pipe System - (SWP 2 & 4)
Detectors 8-43 & 44 located in ceiling of Changing Pump Vaults Hose Stations CO extinguisher l Wet Pipe in Elevator Machine Room (WPS-11)
Cooling water x-over for Diesel Room PAD-1, Valve CW 15-4 Auxiliary 1 Building Sprinkler System Valve CW 15-3. Cooling water x-over to Auxiliary Building, i Unit 1, CQ 17-13 & 14 and Unit 2 2CL 17-13 & 14 for Sprinkler System i EQUIPMENT CONTROL: #11 - S.I. Pump Bus 15 Bkr 1
- 12 - S.I. Pump Bus 16 Bkr 7
- 11 - RHR Pump Bus 15 Bkr 4
- 12 - RHR Pump Bus 16 Bkr 6
- 11 - C.S. Pump Bus 15 Bkr 9
- 12 - C.S. Pump Bus 16 Bkr 1
- 11 - C.C. Pump Bus 15 Bkr 5 i
- 12 - C.C. Pump Bus 16 Bkr 5 I
- 21 - C.C. Pump Bus 25 Bkr 13
- 22 - C.C. Pump Bus 26 Bkr 5
- 11 - CHG Pump MCC 1K2 Cell B-4
- 12 - CHG Pump MCC 1K1 Cell A-4 l
- 13 - CHG Pump MCC 1K2 Cell A-3 l
MCC 1K1 Bus 111 Bkr 111J MCC 1K2 Bus 121 Bkr 121J l MCC 1KA2 Bus 121 Bkr 121B Safeauard
- 11 - S.I. Pump Bus 15 Bkr 1
SECURE NORMAL VENTILATION Bus 190, Bkr 193 - De-energizes MCC-1N1 and 1NA1 Bus 290, Bkr 293 - De energizes MCC-1N2 and 1NA2 Bus 230, Ekr 232 - De-energizes MCC-2N1 Bus 240, Bkr 242 - De-energizes MCC-2N2 m
14gaCA nunts 94f e 2 M'f ~
UPDATED RI. OPNS FE App;ndix A
' FIRE DETECTION ZONE 8 Rnv. 5 Page 3 of 10 SPECIAL INSTRUCTIONS: Smoke Removal via Auxiliary Building special ventilation.
Refer to MCC & Cell book in Control Room for loss of MCCs.
Self-contained breathing apparatus reuqired until air sample is taken and analyzed.
For sprinkler isolation, see Det Zone 9.
"SCBAs" may be required if high airbome activity is present.
Refer to MCC & cell listing for loss of MCCs.
Fire can be controlled by use of hose stations & fire extinguishers.
SUMMARY
- Fire in area would be of light intensity. Care should be exercised due to possible airborne activity; use of "SCBAs" advised until air samples are taken and analyzed. Flammable liquid lockers with various flammables located on this level.
H2N2supply is regulated by security shut-off valves which are activiated by self-contained regulators. They close upon high DP and can only be operated manually.
i 1
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^A +4ath men +3 Poye 3 *5f
F.5 Appendix A UPDATED P.l. OPNS Rev.5
' Ho -up (Tqnk PAD-1 h ' '
W(o l 3 FD *11 *12
,,j Refueling Water Stora9 Clean Chem.
- 21 3 Tank Handling Equipment N/ CW 15-3 N
1o - <
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l,i"4E D(8-38 a a-3sSiPumps Apporidix R BOX p- / I *12 I Radiation '
[
MCC 1K L> Sliding 05 Bus 1 .j;w Door 8
" 35-CS Pumps i .,
~
JHR Pits O
( "
3 34 O
( R l- ?.l A U -
8-33 WPS- 11 Q
( h WCC IKA
- g. B"' 2 Appendix R Box- E 8
8'3h i
Cwi7-13 I" s
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8-47 l wi7-14 $ lon g ,J@
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h 27 8-26 #-23 i
8-46 '4
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a *i2 Heat exchanger l
'I gym g .jj g -
waste H id-up B *22 Heat Exchanger ='=
" '" Cooi "In"g@8-6 8 2t 0 8-7 o
8,2 g3 g7c >, g l v
@ 8-1 2 cng. oum, F (on)8l-15 Appendix R Box--4 "14
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8-13
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Auxiliary B-AActc/7mmf3 94fe */ dIV Gnd Flr EI. 695' FIRE DETECTION ZONE 8 FIRE AREA 58 & PART OF 73
UPDATED P.I. OPNS F5 Appandix A Rsv. 5 Page 1 of 3 FIRE DETECTION ZONE 40 FIRE AREA 73 O
~~D41achment 3 pop s 4 gi~
F5 AppIndix A j RIv. 5 FIRE DETECTION ZONE 40 Page 2 of 3 FIRE AREA (S): 73 1 OCATION: Unit 2 Auxiliary Building, El. 695' EMERGENCY LIGHTING: Yes - plus 8 hr.
l TYPE OF FIRE: Cable - Oil PERSONNEL
' HAZARDS. Surface contamination Possible high airborne may be present All spills less than 900 gas and gases treated prior to releasa e Caustic pump West end 4 ,
COMMUNICATIONS: Dial telephone Sound powered phone jackbox FIRE EQUIPMENT: Stairway Wet Pipe System (SWP-12)
Hose Stations CO2fire extinguishers Cooling water x-over for Auxiliary Building sprinkler system Valve #2CL-17-13 EQLilPMENT CONTROL: MCC 2K-1: Bus 211 Bkr 211J MCC 2K-2: Bus 221 Bkr 221J MCC 2KA-2: Bus 221 Skr 221B l
- 22 Charging Pump MCC 2K1 Cell A-4
- 22 Safety injection Pump Bus 25 Skr 8
- 21 RHR Pump Bus 26 Bkr 11
- 22 RHR Pump Bus 25 Bkr 7 1
- 21 Containment Spray Pump Bus 25 Bkr 9
- 22 Containment Spray Pump Bus 26 Bkr 9 SECURE NORMAL VENTILATION j Bus 190, Bkr 193 - De-energizes MCC-1N1 i Bus 290, Bkr 293 - De-energizes MCC-1N2 l Bus 230, Bkr 232 - De-energizes MCC-2N1 j Bus 240, Bkr 242 - De-energizes MCC--2N2 SEEQlAL INSTRUCTIONS: Smoke Removal via Auxiliary Building special ventilation. I Frisk before leaving contaminated areas. i "SCBAs" may be required if activity is present. 1 May need chemical neutralizing kit if oil spill has occurred. !
q
$_UMMARY: Care must be exercised in event of a fire in this area since contamination and high {
airborne activity may be present. Fire can be controlled by use of hose station and fire j extinguishers. Se/eral flammable liquid lockers located in area. !
., a i
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~~~ 4[kchns mt3 Pay e C. 4 iy 1
UPDATED P.I. OPNS hfv.#ppendix 5 A l % J , , Page 3 of 3 Ahl-W)Y 211- O F
~-
d 59' ~5 40-5 O
_p I A Charging Pumps _
_ 40-+ _
l l 2 fl-S8 - - O MCC Safeguard 2KA MCC Safeguard- sl 2K Bus 2 2CL-17-13 h h _(It v
Q 40-14 4_
g E l 14 -a
! L ,9_ g 40-6 j jQ MCC 2K Bus 1
- g To FDZ-37 40-7 RHR Pit (( = 0
'PS-22 FD 92 N f--
C REERIIHil l x l I Locked- Manuci Actuator Door S.S. Permission '
Req'd To Open 4 0 '11 Q40-10 o OG b i -
E !
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$! SI Pumps
@ Nl I.
21 To FDZ-39 t Refueling Water Storage Tank
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Unit 2 Aux Blc Fir El. 695' @ achmd Pay My-FIRE DETECTION ZONE 40 Fire Area 73
UPDATED P.I. OPNS F5 App ndix A Rev. 5 Page 1 of 4 FIRE DETECTION ZONE 19 FIRE AREAS 59 & 84 l
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1 F5 App;ndix A '
R;v. 5 FIRE DETECTION ZONE 19 Page 2 of 4 i
FIRE AREA (S): 59 & 84 LOCATION: Unit One Auxiliary Building / Hot Lab - Count l Room, El. 715' EMERGENCY LIGHTING: Yes - plus 8 hr l
TYPE OF FIRE: Area 59 Cable Area 84 Cable '
PERSONNEL HAZARDS: Contaminated areas. Possible high airborne activity.
Spills less than 900 gal & gases treated prior to release.
l COMMUNICATIONS: Sound powered phone jackboxes Dial telephone Portable radio use may be limited or restricted in several areas of this fire zone. These areas are marked in the plant.
FIRE EQUIPMENT: Hose stations
! CO2fire extinguishers Wet Pipe Sprinkler System (WPS-19)
Pre-Action Deluge (PAD - 3 & 4) for cable penetration to containment EQUIPMENT CONTROL: Power & Control Cables Safe Guards:
MCC 1L2 Bus 122 Bkr 122E MCC 1L1 Bus 112 Bkr 112E MCC 1X1 Bus 112 Bkr 112J '
MCC 1X2 Bus 122 Bkr 122J Boric Acid Transfer Pump #11: CC 1L1 Cell B-5
- 12: MCC 1L2 Cell C-5
- 21: MCC 2L1 Cell E-5
Normal MCC 1J1-Bus 310-Bkr 312 Normal MCC 1J2-Bus 320-Bkr 325 SECURE NORMAL VENTILATION Bus 190, Bkr 193 - de-energizes MCC-1N1 Bus 290, Bkr 293 - de-energizes MCC-1N2 Bus 230, Bkr 232 - de-energizes MCC-2N1 Bus 240, Bkr 243 - de-energizes MCC-2N2 Detectors #19-1 through 6 are over Access Control, Detectors #19-22,19-27 through 19-31 are over Hot Chem. Lab. & Volume Control Room Tank m - - Eh L
- B dachnunf 3 vot3 e 9 419-l
UPDATED RI. OPNS t-d App:ndix A Rev. 5 '
FIRE DETECTION ZONE 19 Page 3 of 4 SP_ECBl.
INSTRUCTIONS: Smoke Removal via Auxiliary Building special ventilation "SC8As" mcy be required if high airborne activity is present.
Refer to MCC and cell listing for loss of MCCs Entrance to spent fuel Hx and waste gas compressor area via Fuel Handling Area, j El. 715' l
SUMMARY
- Fire in Zone 29 could present potential high airborne activity. Care must be exercised in controlling fire in this area to prevent overexposure to personnel.
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UPDATED P.I. OPNS v,ppendix A i Page 4 of 4 O
l g on I ,$6 T'
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19-5 }Q on g g58,B 4
.G 3 qp PA-4,g od ic A ,, ,; 3 9 rz h s FD]
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- h -18 24 g PA- -g 8 l @2 9 FD 155 Detectors -1thru 6 L.,_ " "
Located Over Access Control -0 E Fm C4 3
0" 19 -
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11 Hold-Up f 0 r.
Hot Lob
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121 3
- = Hold Up l ;
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G Unit 1 Aux Bldg 8e Hc_p)ggg g,of3 p,yg ;; g ry Flr El. 716 FIRE DETECTION ZONE 19 Fire Area 59 & 84
UPDATED P.I. OPNS F5 App:ndix A Rev. 5 Page 1 of 3 l
l l
1 l
i FIRE DETECTION ZONE 46 FIRE AREA 74 l
ms
F5 App;ndix A !
' Rnv. 5 FIRE DETECTION ZONE 46 Page 2 of 3 i 1
l FIRE AREAISh 74 LOCATION: Auxiliary Building Unit 2, El. 715' EMERGENCY LIGHTING: Yes - plus 8 hr.
TYPE OF FIRE: Cable PERSONNEL 1 HAZARDS: Surface contamination !
Possible high airbome Liquids and gases treated prior to release ]
I COMMUNICATIONS: Dial telephone Sound powered phone Jackboxes '
Portable radio use inay be limited or restricted in this fire zone. These areas are marked in the plant.
FIRE EQUIPMENT: Pre-Action Deluge (PAD-6 & 7) for cable penetrations to containment Stairway Wet Pipe (SWP-12) l Hose station '
CO2 l EQUIPMENT CONTROL: Power and Control Cables I
Safe Guards:
MCC 2L-1 Bus 212 Skr 212E MCC 2L-2 Bus 222 Bkr 222E ,
MCC 2X-1 Bus 212 Bkr 212J MCC 2X-2 Bus 222 Bkr 222J SECURE NORMAL VENTILATION Bus 190, Bkr 193 - De-energizes MCC-1N1 j Bus 290, Bkr 293 - De-energizes MCC-1N2
!- Bus 230, Bkr 232 - De-energizes MCC-2N1 Bus 240, Bkr 242 - De-energizes MCC-2N2 Normal MCC 2J1 Bus 410 Bkr 413 Normd MCC 2J2 Bus 420 Bkr 423 SPECIAL INSTRUCTIONS: Smoke removal via Auxiliary Building special ventilation Frisk before leaving contaminated areas.
4 "SCBAs" may be required if high airborne activity is present.
SUMMARY
- Fire in Zone 46 could present potential high airborne activity.
Care must be exercised in controlling fire in this area to prevent overexposure to personnel.
~ ~~~~~~~~
Mschment3 Pate n d 'i~
F5 pcndix A UPDATED P.l. OPNS ggg Paga 3 of 3
'kk
Relay Room 7 l
@ g u Z &@
Q L w D9 n Tonk Bus 2 PAD-
) g 4 6-18 on /
Bus (U l lon 4, h46-19 h 46-2h 10 4
4 6-14 46-15 Busf bb iWP-12
__O AC6' N L
&- Exhaust
$5 MCC 2L Filters MPAD-7 eM 4 6 -13 ,
~
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Stm Gen MCC Norm 2J C Blowdown Bus 1 4 Hold-Up Tanks 46-8 46-7 46-
@ 0 46-5 lon b46-6 "'A*' "SJ
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Flr El.- $drAc/1merif 3 Paf-e r / gif FIRE DETECTION ZONE 46 Fire Area 74
ATTACHMENT 4 Letter from Rockbestos dated October 27,1998
. . - - . _. . - - - ~- - . - - . - - - - - - - - -
Oct-27-CC 12:01P Engineeying Dept 860-C53-8423 P.01 ROCKBESTOS <=*ma"~
SU 20 Bradk*y Park Road 8csm.RPRENANTeconeonsnan ENGINFFI4EO WIRE ANO CABLE e o sa<'ior tie";"TiZo * '*" ' "^
F.w 860653,8301 October 27,1998 Northern States Power Tom Lillehei, PEE Nuclear Generation Services 1717 Wakonade Drive East Welch, MN 55089 Re: Your Letter Dated September 15,1998 Deer Mr. Lillehei:
We have the following comments to the questions posed in the subject NSP letter
- 1. "The Underwriters Laboratories (UL) test report on Rockbestos Firezone R cable did not state the test standard to which it was conducted, the acceptance criteria, for the tested cables, or include a detailed test plan or test protocol. Please provide these elements."
i
Response
i The test " standard" was the fire exposure to which cables for redundant safety trains must withstand as outlined in " Fire Protection Program For Operating Nuclear Power Plants" (Appendix R to 10 CFR 50). Since this test was undertaken as an investigation. the test plan is contained in the Abstract on page I, and in more detail under the heading
" General" on pages 1,2, and 3. There was no stated " test criteria"; the test was conducted to provide information on whether this class of fire resistant cables would be suitable for redundant safety trains exposed to the postulated time-temperature envelope outlined in appendix R to 10CFR 50. This investigation was undertaken with the knowledge and advice of both an operating Nuclear Utility (GPU) and the NRC. Neither of these entities requested a formal test plan be written prior to the actual test, and none, with the exception of the test description listed above was provided separately, it is safe to state that considerable planning and thought went into this process and is documented in the report itself. No other test " plan" was or will be written.
- 2. "The UL tost further states that leakage current measurement were taken during the full scale fire test of the Rockbestos cable. The numerical results of the leakage current measurements were not recorded in the report. Provide the numerical values for leakage current in the Firezone R cables that were monitored during the test" HI EEE A siwmbe of TW Wrnwn Group ur cd g
- Mach ment 9' pap 1qi.-
Oct-27-CO 12:01P Engineering.. Dept CsCO-C53-8423 P.02 1
Page 2 l
Response
Leakage currents were not monitored during the full scale fire test of the l Rockbestos cables and nowhere in the report is the claim made that they were monitored.
it was in fact because the test circuit configuration precluded such measurements that the small scale test was conducted. In this portion of the test, the cables were energized with the stated voltages, and leakage currents were monitored at intervals during and after the fire exposure. The observed leakage currents appear on page 28 and 29 of the report. l
- 3. 'The UL fire test tested specific sizes of instrument and power Firezone R cables.
Demonstrate how the sizes of Firezone R cables, which you propose to install, are bounded by the list" 4
4
Response
Because of the nature of the test, it is concluded that any cable using the same conductor materials. insulation materials, and method of manufacture would also perform in a similar manner as long as its construction included conductors of the same size or larger and/or insulation thickness as thick or thicker than that used in the test. This follows from the fact that two sizes were used in the test (#14 AWG and #6 AWG). Using this logic, cables up to and including #4/0 have been approved by the NRC in specific installations.
l Sincerely, 1
hM ,&- 1 James M. Morganelli Applications Engineer JMM/ja cc: T. S. Bhat i Eric Cohen Doug Soulierre
)
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ATTACHMENT 5 1
Manufacturers Catalog Specification Sheet i
1 l
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- . . . _ . - . - _ . - . - - - - - - - - - - - - - - - - - - - - ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
I I I J,) l i I I l Armor (optional llinder_Tapcl l I l I l Cooductorf Continuously elde' d Flame retardarit Flexibly stranded a M gat '
'nici:et t'cated-
! st'a inless strel hopdr l
~_ __ _ _ . . . !
I !
' OverallColseri l
ng l l [' } [I l { fin, Barrier-i Composte l Gliss b' raid [ l 511ca} ape,,
Conductor Covering
\ ihorginic layer
} LOCA i DieIectEic l Gl!tsstkaid! !
SilicaneT6bbe'r l 6 4 i l 1 i 6 i I
- c m l Firezone*Ris a fireproofcable specifically designed Scope by Appendix."R". (Code of Federal Regulation : j Q
to address redundant safety circuit tequirements within Title 10, Part 50.48). It is intended for use on lowid nuclear generating stations. 'Ihis unique Class lE voltage con'rol, t power and instrumentation [
nuclearqualified cable system insures safety-related circuit integrity in the event of a fire as required circuits unarmored and
- versions. can be supplied in either armor
.__1 <j Features Performance Standards Construction Cost-efficient alternative to t'iermal N1inimum one hour fire rating at Conductor:
wrapping of cable trays or cable 1700*F as defined by the ASTN1 stan. Flexible strand high temperature, nickel-re-routing dard E-119 coated copper conductor Can be installed within trays contrining a Greater than three hour fire survival Fire Barrier:
typical plant cables at 1500 F Composite inorganic layer
to be derated (as is necessary with IEEE-383 and IEEE-323. (Rockbestos Silicone rubber insulation layer ampacities for cables inside thermally Report QR-9801) wrapped trays) Conductor Covering:
- Full ASTNI E-Il9 fire test report avail- Niica tape and glass braid with high
. Additional circuits can be easily added able under UL report file #R10925-1, temperature finish project #84NK2320 (Note: this is not .
- Does not require costly inspection. main-a UL listed cable) Circuit Identification:
tenance and record keeping associated White braids with colored tracers with tray wrapping Cable passed the IEEE-383 70,000 BTU /hr vertical tray flame test Cabling:
- Full traceability provided Required number of conductors cabled
. Silicone rubber insulation layer is in
. Radiation resistant Ilinder Tape:
accordance with ICEA standard S- 19-81 ,
Flame retardant binder rape
+ Flame retardant
= Quality Assurance program in accor- .
- Nuclear qualified with a minimum 40- dance with 10 CFR Appendix B Co tinuot s wel e , corrugated, stain- l year then nal life expectancy at 90*C*
- less steel she'ath mummmmmmmmmmmmmmmmmmmmmmmmmmmmma i
- Sihcone rubber msulation has an inherent 12FC 40-y ear thermal life
- A-Hachm+n t5 Pap I 42 -
- L'narmored cable must be installed in steel conduit.
J The Rockbestos Compaq 0 6/94
- 20 8tadey Park Acad
- P.O. Box tt02
- 203-653-8300 * $00 32N625
- Fax: 203 653 8301 S-7
Firezone*R l . .l g. l4 .
nr n 90 C*,600 Volt ye d Class IE Nuclear l l l l' l l ~
' l
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Spec. RSS 5-144 l
.a Stainless Steel Armored ;
i Single Conductor Nominal Overall Approximate Product Number of Conductor Number of Diameter Diameter Net Weight Code Conductors Size Strands (In) (In) (Lbct')
F5&3017 2 14 AWG 19 .27 .78 260 F54-3N1 3 14 AWG 19 .27 .92 320 F5&3N5 4 14 AWG 19 27 .96 390 1
i
-- b F54-3053 7 14 AWG 19 .27 1.00 540 F5&30N 2 12 AWG 19 .29 .84 290 F54-3N2 3 12 AWG 19 .29 .96 370 l F54-3N6 4 12 AWG 19 .29 1.00 450 l
F54 3054 7 12 AWG 19 .29 1.13 650 i F5&3N0 2 10 AWG 49 .33 .96 360 F5&3005 3 10 AWG 49 .33 1.00 430 i F5&3N7 4 IGAWG 49 .33 1.00 530 l F54-3055 7 10 AWG 49 .33 1.33 820 F54-3N3 3 8AWG 133 .39 1.26 600 F5&3048 4 8AWG 133 .39 1.26 740 F5&3044 3 6AWG 133 .44 1.26 730 1 F54-3N9 4 6AWG 133 .44 1.46 930 F54-3014 3 4AWG 133 .54 1.50 1150 F54-3050 4 4AWG 133 .54 1.56 1220 F5&3016 3 :AWG 665 .60 1.61 1470 F54-3051 4 2AWG 665 .60 1.71 1650 F543057 3 iAWG 817 .67 1.80 1630 F54-3052 4 1AWG 817 .67 2.02 2l00 Unarmored (Must be installed in conduit)
F54-3019 2 14 AWG 19 .27 .62 150 F5&3025 3 14 AWG 19 .27 .66 200 F54-3030 4 14 AWG 19 .27 .73 250 F54-3021 7 14 AWG 19 .27 .88 400 F5&3010 2 12 AWG 19 .29 .66 170 F54-3020 3 12 AWG 19 .29 .70 240 F54-3031 4 12 AWG 19 .29 .78 300 F5&3009 7 12 AWG 19 .29 .94 480 F54-3024 2 10 AWG 49 .33 .73 220 F54-3011 3 10 AWG 49 .33 .78 290 F543032 4 10 AWG 49 .33 .87 380 F54-3038 7 10 AWG 49 33 1.05 620 F543026 3 3AWG 133 .39 .93 430 F54-3033 4 8AWG 133 .39 1.03 560 F54 3027 3 6AWG 133 .44 1.02 550 F5&3034 4 6AWG 133 .44 1.14 720 F54-3025 3 4AWG 133 .54 1,15 760 F543055 4 4AWG 133 .54 1.29 990 F54-3029 3 665 g
{AWG g F54-3036 4 .AWG 665 haC/1/WNf((et pt 7. M 2
~
h5 3 1 8
- Silicone rubber insulation has an inherent 125'C 40-year thermal life S-8 n Roce tos cornpany C 6M
- 20 Bradley Pa* Road
- P.O. Son 1102
- 203 653-8300
- 80M27 7625
- Far 203-6534301