ML19210E913

Forwards Addl Design Drawings for Fire Protection Mods,In Response to NRC 790727 Request Per Safety Evaluation for Amend 23 of Ol.Description of Fire Detection Sys Encl

ML19210E913
Person / Time
Site:	Crystal River
Issue date:	12/06/1979
From:	Baynard P FLORIDA POWER CORP.
To:	Reid R Office of Nuclear Reactor Regulation
Shared Package
ML19210E914	List: ML19210E913
References
3--3-A-3, 3-0-3-A-3, NUDOCS 7912130201
Download: ML19210E913 (11)

Text

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~ .Jo C ,, s .e f j s 2 C ce3cem Florida Power C O M Po M a T ro N December 6, 1979 File: 3-0-3-a-3 Mr. Robert W. Reid Chief Operating Reactors Branch #4 U.S. Nuclear Regulatory Commission Washington, D. C. 20555

Subject:

Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 Fire Protection Program Modifications

Dear Mr. Reid:

On July 27, 1979, the Commission issued Amendment No. 23 to the Operating License for Crystal River Unit 3. This amendment added license conditions relating to the completion of modifications at CR-3 regarding fire protection.

Certain items listed in Section 3.0 of the Safety Evaluation enclosed in Amendment 23, were marked with an asterisk which indicated that the NRC staff required additional design information in order to complete their review of these proposed modifications. In that regard, Florida Power Corporation hereby submits the attached evaluation information and design drawings concerning items 3.2, 3.17, 3.23, 3.25, 3.27, 3.28, 3.29, 3.30 and 3.31. Additional inf ormation regarding items 3.1, 3.5, 3.14, 3.15 and 3.18 will be submitted as soon as possible.

Your expeditious review of this information will be greatly appreciated in order that these modifications can be completed at CR-3. If you require any additional information or wish to discuss our submittal, please contact us.

Very truly yours, FLORIDA POWER CORPORATION

g. p 1550 101 Dr. P. Y. Baynard Manager, Nuclear Support Services PYBemhR01 DN90

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General Office 3201 Tn;rty tourtn street soutn . P O Box 14042. St rsburg Flor hb 866-5151

STATE OF FLORIDA COUNTY OF PINELLAS Dr. P. Y. Baynard states that she is the Manager, Nuclear Support Services, of Florida Power Corporation; that she is authorized on the part of said company to sign and file with the Nuclear Regulatory Commission the information attached hereto; and that all such statements made and matters set forth therein are true and correct to the best of his knowledge, information and belief.

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pr.(/P. Y ~ aynard Subscribed and sworn to before me, a Notary Public in and for the State and County above named, this 6th day of December, 1979.

Notary Public Notary Public, State of Florida at Large, My Commission Expires: August 8, 1983 1550 102 CameronNotary 3(D12)

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ADDITIONAL INFORMATION CONCERNING CR-3 FIRE MODIFICATIONS SER TABLE 3.1 Item 3.2 Fire Detection Signaling System The list of drawings below show the installation procedures for supplying emergency power to the fire detection system at Crystal River Unit 3.

Emergency power will be supplied to the following systems:

Products of Combustion Cabinet - Office Building Products of Combustion Cabinet - Plant Halon System Cable Spreading Room Fans Cardox Syst em Fire Service Control Panel List of Drawings Provided Drawing Number Revision Drawing Number Revision S-224-103 SH.75 A E-212-031 FSF17 A E-212-031 FSF18 A E-201-052 A ES-C-1188 2 of 5 A B-208-031 FS25 A E-201-061 AC-10 A Y-90550 2 of 17 A E-201-061 AC-16 A EC-209-031 FS-16 A SS-211-031 FS-01 A EC-209-031 FS-27 A SS-211-031 FS-34 A EC-209-031 FS-33 A SS-211-031 FS-36 A EC-209-031 FS-34 A SS-211-031 FS-41 A EC-209-031 SH.03 A SS-211-031 FS-43 A EC-210-612 A E-212-031 FSC1 A E-215-174 A E-212-031 FSF1 A E-215-205 A E-212-031 FSF2 A EC-220-224 A E-212-031 FSF3 A EC-220-226 A E-212-031 FSF9 A E-215-201 A E-212-031 FSF11 A E-215-204 A Item 3.17 Fire Stops Enclosed are the following drawings showing the locations of the cable tray fire stops to be installed at CR-3.

Drawing Number Revision Title or Description E-214-Oll A Electrical Cable Trays Turbine Bldg. Above EL. 95'-0" West E-214-032 A Electrical Cable Trays Control Complex Above EL. 108'-0", 124'-0" and 145'-0" E-214-041 A Electrical Cable Trays Aux. Bldg.

Above EL. 95'-0" North PYBemhR01DN9 1550 103

Item 3.17 Fire Stops (Cont'd)

Drawing Number Revision Title or Description E-214-042 A Electrical Cable Trays Aux. Bldg.

Above EL. 95'-0" South E-214-043 A Electrical Cable Trays Aux. Bldg.

Above EL. 119'-0" North E-214-044 A Electrical Cable Trays Aux. Bldg.

Above EL. 119'-0" South E-214-051 A Electrical Cable Trays Reactor &

Inte rmedia te Bldg. Above EL. 95'-0" E-214-052 A Electrical Cable Trays Reactor &

Inte rmedia te Bldg. Above EL. 119'-0" E-214-061 A Electrical Cable Tray Miscellaneous Details E-215-046 A Electrical Conduit Layout Inter-mediate Bldg. EL. 95'-0" Item 3.23 Fire Detector Locations Enclosed are copies of the Fire Detection System Description and the following drawings showing their location:

Drawing Number Title or Description SK-790906 Electrical Equipment, Reac t o r , Aux. & Int.

Bldg. El. 75' and 95' SK-790907 Electrical Equipment, Reac to r , Aux. & Int.

Bldg., El. 119' Item 3.25 Evaluation of Fire Consequences in Certain Areas This evaluation encompasses Items 3.27, 3.28, 3.29, 3.30 and 3.31. The attached drawings and summary provide the results and modifications planned at CR-3 as a result of this evaluation. The detailed design information for these modifications will be submitted as soon as possible.

We have performed a detailed review of the electrical circuits in the following fire areas and the effects of their loss upon safe shutdown due to an unsuppressed fire. Based on this analysis, we are committing to a wet pipe fusible link sprinkler system in the following areas:

Auxiliary Building Elevction 95, Fire Zones 1, 5 and 16.

Auxiliary 3uilding Elevation 119, Fire Zones 1 West End, 7 and 18.

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In the makeup pump rooms, barriers will be installed to prevent unacceptable fire damage. See Item 3.17 for design details of fire stops. Our evaluation of the Intermediate Building at Elevation 119' (Item 3.30) has indicated the need to install a wet-pipe fusible link water spray system to protect the cable trays above the personnel airlock shield structure. This option is consistent with Section 5.7.6 of the SER.

   'n'e have analyzed the Reactor Building Fire Zone 1, Elevation 95' and 119' and we have found there are many more "A" safety-related circuits inside the Reactor Building than "B" circuits since the isolation valves inside the Reactor Building are "A" and those outside the Reactor Building are "B". Redundant pressure, level and flow instruments for primary coolant system and steam generators are physically located in separate quadrants of the Reactor Building so as to offer large mechanical and electrical separation. Further analysis has shown that a single, unsuppressed fire will not affect redundant safe shutdown systems or their power, instrumentation or control functions.

List of Drawings Provided - Drawing Number Revision Title or Description E-215-043 17 Electrical Conduit Layout Aux. Bldg. EL. 95'-0" Southeast E-215-044 20 Electrical Conduit Layout Aux. Bldg. EL. 95'-0" Southwest E-215-061 13 Electrical Conduit Layout Reactor Bldg. EL. 95'-0" North E-215-062 10 Electrical Conduit Layout Reactor Bldg. EL. 95'-0" South E-215-063 15 Electrical Conduit Layout Reactor Bldg. EL. 119'-0" North E-215-064 13 Electrical Conduit Layout Reacto r Bldg. EL. 119'-0" South E-214-061 9 Electrical Cable Tray Miscellaneous Details 1550 105 PYBemhR01DN90

CRYSTAL RIVER UNIT 3 DESCRIPTION OF SYSTEM OPERATION FOR FIRE PROTECTION EQUIPMENT PROVIDED IN FIRE ZONES hilERE REQUIRED IlY Tile FIRE PROTECTION PROGRMI REVIEW 1550 106

FIRE DETECTION SYSTEM DESCRIPTION As required by the " Fire Protection Program Review" (FPPR),24 zones located in the Reactor, Intermediate, and Auxiliary buildings will be provied with fire detection. The detectors provided for these zones will all tie into one system with the main control panel being located in the Control Room. This detection system shall be " Class A" as defined in NFPA Standard No. 72D and shall have Essential Service (ES) power feeds. Each of the fire detection zones shall be connected to one of three control modules. These control modules shall be located in prominent positions related to the zones signaling to them. The modules alarm (audible and visual) upon receiving fire or trouble signals and also transmit the fire or trouble signal to the control room panel. The signals (audible and visual) received at the control room panel will indicate what building the signal originates f rom and the approxima te location in that building. The exact zone sending the signal will be determined by going to the appropriate control module. Attached is Table 1 which identifies each new zone, the type of detection used in that zone, the control module associated with that zone, and the relationship between the new detection zones and the zones described in the FPPR. By referencing Table 1, it can be seen that the design includes three different types of detection. These types of detection and their functions are as follows:

1. Ion iza t ion Ionization detectors have been located in the zones to be protected in both the auxiliary and the intermedia.te buildings.

2. Linear Thermal Linear Thermal detection has been selected for the zones in the Reactor Building located outside of the Reactor Compartment. These linear thermal detectors are to be installed parallel to the top tray in the stacks of trays as shown on the drawings. Each of these lines running parallel to the top tray will represent a separate zone. This consists of 3 zones on elevation 95'-0" and 6 zones on elevation 119'-0".

3. Heat Detectors Heat detectors will be of the rate compensation type and will be located inside the Reactor Compartment at each of the reactor coolant pumps. The detectors shall be in the immediate vicinity of the oil lift pumps and the oil reservoirs on each of the four reactor coolant pumps. In order to insure that each of the reactor coolant pumps will continue to have detection in their immediate vicinity, in case of a detector or detector circuit failure, there will be two detection zones providing coverage at each of the pumps.

The signals relayed from the local control modules to the control room panel will be as follows: i550 107

From Control !bdule #1 Reactor Building El. 95'-0" Reactor Cuilding El. 119'-0" Reactor Coolant Pump From Control Module #2 Inte rmediate Building El. 95'-0" Auxiliary Building El. 75'-0" Auxiliary Building El. 95'-0" Auxiliary Building El. 119'-0" From Control Module #3 Intermediate Building El. 119'-0" This information will enable the control roon operator to identify the building and elevation from which the signal was generated. For the exact zone to be identified, personnel must go to the appropriate local control module. These control modules will be located at readily accessible points adjacent to the zones pro tected. 1550 108

TABLE 1 Fire Detection Zones To Be Installed To Compoy With The FPPR* 1 Zone Desir. nation In FPPR Type Of Zone No. Zone Description Blde. Elevation Zone Name o f Zone Detection Control Module 1 RB Cable Trays El. 95'-0" RB 95'-0" 1 Area Outside Reactor LT 1 Compartment & O 2 RB Cable Trays El. 95'-0" RB 95'-0" 1 Area Outside Reactor LT --- 1 Compartment O 3 RB Cable Trays El. 95'-0" RB 95'-0" 1 Area Outside Reactor LT h 1 Compartment _ 2 4 RB Cable Trays El. 119'-0" RB 119'-0" & 1 Area Outside Reactor LT 1 160'-0" Compartment 5 RB Cable Trays El. 119'-0" RB2 119'-0" & 1 Area Outside Reactor LT 1 160'-0" Compartment 6 RB Cable Trays E1. 119'-0" RB 119'-0" & 1 Area Outside Reactor LT 1 160'-0" Compartment 2 7 RB Cable Trays E1. 119'-0" RB 119'-0" 6 1 Area Outside Reactor LT 1 160'-0" Compartment 2 8 RB Cable Trays E1. 119'-0". RB 119 - 0" 6 1 Area Outside Reactor LT 1 160'-0" Compartment 9 RB Cable Trays El. 119'-0" RB 119'-0" & 1 Area Outside Reactor LT 1 160'-0" Compartment 10 Decay Heat Pit 3B AB 75'-0" 1 Decay Heat Pit 3B I 2 11 Decay Heat Pit 3A AB 75'-0" 2 Decay Heat Pit 3A I 2 12 Heat Exchanger Room AB 95'-0" 17 Sea Water Pump Room I 2 AB 95'-0" 32 Pump and Tank Room I 2 e

Sheet 2 TADI.E 1 Fire Detection Zones To Be Installed To Compoy With The FPPR* 1 Zone Designation In FPPR Type Of Zone No. Zone Description BldsE Elevation Zone Name o f Zone Detection Control Module 13 Waste Disposal Control Area AB 95'-0" 13 Open Area 1 2 AB 95'-0" 16 Equipment Hatch Area I CZ) 2 AB 95'-0" 18 Nuclear Service Booster I 2

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Pump Room CD 14 Cable Corridors, AB El. 95' AB 95'-0" 1 Hallway I tr7 2 AB 95'-0" 5 llallway I tr) 2 AB 95'-0" 7 Ita llway I -- 2 15 Make-up Pump Rooms AB 95'-0" 4 thkeup and Purification I 2 Pump Rooms 16 Auxiliary Feedwater Area IB 95'-0" 2 lbtor Driven Emergency I 2 Feed Pump Room IB 95'-0" 3 Turbine Driven Emergency 1 2 Feed Pump Room IB 95'-0" 4 Penetration Area I 2 IB 95'-0" 5 Air Supply Fan Room I 2 17 Boric Acid Area & Cable AB 119'-0" 7 Penetration Area I 2 Penetration AB 119'-0" 18 Equipment flatch Area 1 2 18 Waste Drumming, AB El. 119'- AB 119'-0" 25 Waste Drumming Area 1 2 AB 119'-0" 26 Rad. Waste Press. Room 1 2 19 Cable Corridors, AB El. 119' AB 119'-0" 1 llallway and Stairwell 1 2 AB 119'-0" 5 llallway 1 2 20 Cable Area, RB Personnel IB 119'-0" 5 Personnel Access area I 3 Access Area IB El. 119'

Sheet 3 TABLE 1 Fire Detection Zones To Be Installed To Compoy k'ith The FPPR* 1

                                                  ;'one   Desir, nation   In FPPR                     Type Of Zone No.        Zone Description             Bldg. Elevation       Zone        Name o f Zone       Detection      Cont rol flodule 21          Intermediate Building Cable      IB         119'-0"         3    Pressurizer Control         I                3 Areas E1. 119'                                                   Cabinet Area In         119'-0"         4    Ileating and Ventilation MCC Area I

(([ 3 CD 22 Intermediate Building Cable IB 119'-0" 1 Leak Rate Test Area I tc) 3 Areas El. 119' tr7 IB 95'-0" 2 Industrial Cooler Room I --- 3 23 A-D Reactor Coolant Pumps RB 95'-0" 2 Reactor And Primary T 1 System Compartment 24 A-D Reactor Coolant Pumps RB 95'-0" 2 Reactor and Primary T 1 System Compartment

• FPPR - Fire Protection Program Review Notes: 1. I - Ionization (POC) Detectors T - Rate Compensation Thermal Detectors LT - Linear Thermal Detector

2. The detectors provided in zones 4-9 apply to the FPPR zone 1 at elevation 119'-0" of the RB and zone 1 at elevation 160'-0" of the RB.

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