ML18036A300
| ML18036A300 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 07/11/1991 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML18036A299 | List: |
| References | |
| NUDOCS 9107180183 | |
| Download: ML18036A300 (13) | |
Text
ENCLOSURE 1
PROPOSED TECHi4ICAL SPECIFICATION (TS)
BROtIS FERRY NUCLEAR PLANT (BFN)
UNIT 2 (TVA BFN TS 296) 9107180183 910711 PDR ADOCK 05000260 P
PDR 0691 10
UNIT 2 EFFECTIVE PAGE LIST 3.2/4.2-18 3.11/4.11-1.4 3.11/4.11-15 3.11/4.11-16 3.2/4.2-18 3.j.1/4.11-14 3.11/4.11-15 3.11/4.11-1.6
ENCLOSURE 2
BIIIYQF IQGES 1.
Revise Table 3.2.B, Page 3.2/4.2-18, (Instrumentation That Initiates or Controls the Core and Containment Cooling Systems) as follows for Unit 2.
- a. Existing table under Function column reads:
Instrument Channel Condensate Header Low Level (LS-73-55A & B)
Revise table under Function column to read:
Instrument Channel Condensate Header Low Level (LS-73-56A &B) 2.
Revise Table 3.11.A (Fire Detection Instrumentation) as follows for Unit 2 only.
- a. Existing table, Page 3.11/4.11-14, Item 4 under the Local Panel column reads:
"2-25-291."
Revise table, Item 4 under the Local Panel column to read:
"2-25-286."
- b. Existing table, Page 3.11/4.11-14, tems 3, 4, 5, and 6 under the Detector Type column reads:
"Smoke."
Revise table, Items 3, 4, 5, and 6 under the Detector Type column to read:
"Smoke and Heat."
- c. Existing table, Page 3.11/4.11-15, Item 21 under the Area Protected/Equipment reads:
"Mechanical Equipment Rooms" Revise table, Item 21 under the Area Protected/Equipment to read:
"Mechanical Equipment Rooms A & B."
- d. Existing table, Page 3.11/4.11-15, Item 25 under the Local Panel column reads:
"None" Revise table, Item 25 under the Local Panel column to read:
"2-25-326."
- e. Existing table, Page 3.11/4.11-16, Item 41 under the Detector Type column reads:
"Heat or Smoke."
Revise table, It m 41 under the Detector Type column to read:
"Heat and Smoke."
- f. Existing table, Page 3.11/4.l.1-16, Item 46 under the Area Protected/Equipment column reads:
"Cable Tray Zones A, B,
& C."
Revise table Item 46 under the Area Protected/Equipment to read:
"Cable Tray
.ones A, B, C,
& D."
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ENCLOSURE 3
REASON AND JUSTIFICATION FOR PROPOSED CHANGES Reason for Chan es These proposed changes are administrative in nature and enhance the usability of the Technical Specification (TS).
These changes are being made to correct errors in previous TS submittals.
A detailed summary of the changes is provided in Enclosure 2 (Summary of Changes).
Justification for Chan es The TS tables describe instrumentation that must be operable when the system that the instrumentation initiates or controls are required to be operable.
The High Pressure Coolant Injection (HPCI) system provides core cooling for all line breaks which do not result in a rapid depressurization of the reactor
~
vessel.
This system will inject either condensate storage tank water or suppression pool water into the reactor under emergency conditions.
The fire detection systems provide an initiation function for automatically actuated fire protection systems.
The High Pressure Fire Protection (HPFP) systems provide protection from fire in designated areas of the plant.
These proposed changes to the BFN TS are administrative in nature and enhance the usability of the TSs.
The justification for each change is provided below in the order it appears in Enclosure 2.
A.
Change 1
Table 3.2.B (Instrumentation That Initiates or Controls the Core and Containment Cooling Systems) line item for "Condensate Heater Low Level" refers to an incorrect number.
The current TS for Unit 2 identifies the instrument that upon low water level in the condensate storage tank causes the high pressure coolant injection (HPCI) pump to automatically switch from the normal suction path, the condensate storage tank, to its alternate suction path the suppression pool as LS-73-55A and B when actually the instruments that perform this function are LS-73-56 A and B.
This change is required to correct this error and make the table agree with the as constructed status of the plant.
There is no change in the function performed by the instrument or the water level that the instrument causes the actuation.
Compliance instruments should be easily and readily identified for use in surveillances, maintenance and operator reference.
ENCLOSURE 3
(Cont'dj B.
Change 2
Item 4 :
The current TS Table 3. 1 1. A (Fire Detection Instrumentation) describes de tec tion instrumentation associated with the Elevation 565 preac tion system.
The local panel number is incorrectly identified as 2-25-291, it should be identified as 2-25-286.
Panel 2-25-29 1 was associated with the fixed spray system.
The fixed spray system was removed from service as part of the Appendix R and National Fire Protection Upgrades performed on Unit 2.
This is an editorial correction that correctly identifies the local panel and has no affect on the system performance.
Items 3
4 5
and 6 :
The current TS describes the detector type as "Smoke. "
The fire de tec tors installed in the Reactor Building Elevations 5 1 9/54 1,
5 65,
5 9 3 and 6 21 include smoke and heat detectors Table 3. 1 1. A is being modified to show both
",Smoke and Heat" de tec tors.
The change in the table will co rre ctly identify the type of detector utilized.
Item 21 :
Two mechanical equipment rooms in the Unit 3 Diesel Generator Building are designated as A and B.
The current TS does no t identify them as such.
Table 3. 1 1. A is being modified to identify the rooms as A and B,
and avoid confusion.
Item 25 :
The current TS table does not associate any panel associated with the contro 1 bay Elevat ion 5 93.
Smoke detectors are located in the Communications Battery/Board Room,
Notor Generator Sets, Battery Board Romm 2 and Battery Room 2'n the Control Bay Elevation 5 9 3.
These detectors are associated with local panel 2-25 -326.
Table 3. 1 1. A is being modified to add local panel number 2-25-3 26.
Item 41 :
Current TS describes the de tec tor type 'ssociated with pane 1 3-25-329 as "Smoke or Heat. "
The detectors are cross-zoned such that various combinations of smoke and heat,
smoke and smoke, heat and
':ea t detectors are utilized to actuate the 'reac tion sprinkler system.
Since both types of detectors are present in these areas, Table 3. 1 1. A is being modified to s ta te "Heat and Smoke" instead of "Heat or Smoke. "
Item 46:
.he current TSs C in the
- rbine Building 1-25-334.
However, cable 1-25-334 are A, B, C, and zones A, B, C, and D.
identify cable fixed water s pray zones A,
B, and Elevation 586 as being protected by panel fixed water spray zones protected by panel D.
Table 3. 1 1. A is be ing ~odifie d to state 0694k
ENCLOSURE 4 PROPOSED DETERMINATION OF NO SIGNIFICANT HAZARDS CONSIDERATION Descri tion of Pro csed Technical S ecification Amendments 1.
Revise Table 3.2.B, Condensate Header Low Level Switch to reflect the correct instrument number.
2.
Minor editorial changes to Table 3.11.A to enhance usability.
Basis for Pro osed No Si nificant Hazards Consideration Determination NRC has provided standards for determining whether a significant hazards consideration exists as stated in 10 CFR 50.92(c).
A proposed amendment to an operating license involves no significant hazards consideration if operation of the facility in accordance with the proposed amendment would not (1) involve a significant increase in the probability or consequences of an accident previously evaluated, (2) create the possibility of a new or different kind of accident from an accident previously eva".uated, or (3) involve a significant reduction in a margin of safety.
1.
The proposed changes do not involve a significant increase in the probability or consequences of an accident previously evaluated.
Table 3.2.B (Instrumentation That Initiates or Controls The Core and Containment Cooling Systems) is being revised for Unit 2 to identify the correct level switch that enables the High Pressure Coolant Injection System pump to automatically switch from the normal suction path, the condensate storage tank to the alternate suction
- path, the suppression pool, upon low level in the condensate
- system, storage tank.
Table 3.2.B identifies the instruments that perform this function LS-73-55A G
B when actually the instruments that perform the function is LS-73-56A G B.
Table 3.11.A (Fire Detection Instrumentation),
Item 4, describes detection and instrumentation associated with the Elevation 565 preaction system.
The local panel number is incorrectly identified as 2-25-291, it should be identified as 2-25-286.
Panel 2-25-291 has never been associated with the preaction system.
Panel 2-25-291 was associated with the fixed spray system.
This system was removed from service as part of the Appendix R and National Fire Protection Upgrades performed on BFN Unit 2.
Items 3, 4, 5, and 6 describe fire detection through the use of smoke detectors.
In addition to smoke detectors, heat detectors are also provided in these areas to actuate the preaction sprinkler system.
For better identification of the area protected, Item 21 should include "A G B" for the mechanical equipment rooms.
Item 25, panel number 2-25-326 was inadvertently omitted from this table.
Item 41, both heat and smoke detectors actuate the preaction sprinkler system, therefore, "or" is being replaced with "and."
Item 46, cable spray zoi:e D is also associated with panel 1-25-334, therefore, it is being added to the table.
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ENCLOSURE 4 (Cont'IIj These changes are administrative in nature and are being made to correct administrative errors in previous TS submittals.
The changes do not affect any of the design basis accidents and do not change or affect the Final Safety Analysis Report (FSAR).
These changes do not involve an increase in the probability or consequences of an accident previously evaluated.
2.
The proposed changes do not create the possibility of a new or different kind of accident from previously evaluated.
The proposed changes are administrative in nature.
They are being made to correct administrative errors in previous Technical Specification (TS) submittals and implementation.
No modifications to any plant equipment are involved.
There are no effects on system interactions made by these changes.
The changes will correct the TS so that they are accurate and reflect actual plant configuration.
3.
The proposed changes do not involve a significant reduction in the margin oi safety.
The proposed changes are administrative in nature.
They correct administrative errors in previous TS submittals and implementation.
The proposed changes do not reduce or adversely affect the capabilities of the system involved.
The margin of safety for the HPCI and fire protection system is not reduced.
TVA concludes that because changes described in this document are administrative in nature and do not change the function or affect the operation of the HPCI and HPFP systems.
The changes do not involve a significant increase in the probability or consequences of an accident previously evaluated, create the possibility of.a new or different kind of accident from an accident previously evaluated, or involve a significant reduction in the margin of safety.
Hinimum Ho.
Operable Per Xd.~~
1(2) 1(2) 2(2) 3(2) 3(2)
HPCI Trip System bus power monitor RCIC Trip System bus power monitor Instrument Channel-Condensate Header Low Level (LS-73-56A 5 8)
Instrument Channel Suppression Chamber High Level Instrument Channel Reactor High Hater Level (LIS-3-208A and LIS-3-208C)
Instrument Channel-RCIC Turbine Steam Line High Flow (PDIS-71-1A and 18)
Instrument Channel-RCIC Steam Supply Pressure Low (PS 71-1A-D)
Instrument Channel-RCIC Turbine Exhaust Diaphragm Pressure High (PS 71-11A-D)
TABLE 3.2.8 (Continued)
N/A N/A
> Elev. 551' 7" above instrument zero A
S 583" above vessel zero g 450" H 0 (7) 250 psig
<20 psig 1.
Honi tors avail abi1 i ty of power to logic systems.
1.
Honi tors avail abil i ty of power to logic systems.
1.
Below trip setting will open HPCI suction valves to the suppression chamber.
l.
Above trip setting will open HPCI suction valves to the suppression chamber.
1 Above trip setting trips RCIC turbine.
l.
Above trip setting isolates RCIC system and trips RCIC turbine.
1.
Below trip setting isolates RCIC system and trips RCIC turbine.
l.
Above trip setting isolates RCIC system and trips RCIC turbine.
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TABLE 3.11.A Building-Elevation LOCAL Area Protected/
fg))i~
Detector 1.
Reactor - 519 2.
Reactor - 519 3.
Reactor 519/541 4.
Reactor 565 5.
Reactor - 593 6.
Reactor - 621 7.
Reactor - 639 8.
Diesel Generator Units 1 and 2 - 565 None None 2-25-313 2-25-286 2-25-287 2-25-303 2-25-333 None HPCI RCIC RHR General Area General Area General Area Recirculation HG Sets Diesel Generator Rooms and Fuel Oil Transfer Room Heat Heat Actuate Fixed Spray Annunciation Heat Heat Actuate AFFF System Actuate CO; System Smoke
& Heat Actuate Preaction System Smoke
& Heat Actuate Preaction System Smoke
& Heat Actuate Preaction System Smoke
& Heat Actuate Preaction System 9.
Diesel Generator Units 1 and 2 565 10.
Diesel Generator Units 1 and 2 583
').
Diesel Generator Units 1 and 2 - 583 12.
Diesel Generator Units 1 and 2 583 Diesel Generator Unit 3 - 565 1-25-331 1-25-331 None None None Pipe and Electrical Tunnel Diesel Auxiliary Board Rooms A&B Aux BD A Compt 7
Aux BD 8 Compt 10 Diesel Auxiliary Board Rooms A & 8 Diesel Generator Rooms and Fuel Oil Pump Room Smoke Smoke Smoke Heat Heat Actuate Preaction System Door R.1ease Annunciation Actuate CO~ System Actuate CO~ System 14.
Diesel Unit 3 15.
Diesel Unit 3 Generator Building 565 Generator Building
- 565 3-25-332 3-25-295 Pipe and Electrical Tunnel Smoke Shutdown Board Rooms 3EB
& 3ED Smoke and Bus Tie Room Actuate Preaction System Annunciation 16.
Diesel Generator Building Unit 3 565 0694k 3-25-289 Pipe and Electrical Tunnel Heat Actuate Fixed Spray
TABLE 3.11.A (Cont'd)
Building-Elevati on LOCAL Area Protected/
Kattiginenl; Detector 17.
Diesel Generator Building 3-25<<332 Unit 3 565 Pipe and Electrical Tunnel Heat and Smoke Actuate Fixed Spray 18.
Diesel Generator Building Unit 3 583 None Diesel Auxiliary Board Rooms 3EA & 3EB Heat Actuate CO~ System l9.
Diesel Generator Building 3-25-305 Uni t 3 583 Shutdown Board Rooms 3EA, 3EB,
- 3EC,
& 3ED; Bus Tie Room; and Diesel Auxiliary Board Rooms Smoke Door Release 20.
Diesel Generator Building Unit 3 - 583 21.
Diesel Generator Building Unit 3 - 583 22.
Control Bay - 593 23.
Control Bay 593 24.
Cvi irol Bay - 593 25.
Control Bay - 593 26.
Contiol Bay 593 27.
Control Bay - 593 28.
Control Bay - 593 29.
Contiul Bay 593 30.
Control Bay - 593 31.
Control Bay - 593 Hone Hone 1-25-325 Hone None 2-25-326 None None Hone tlone ttone 3-25-327 Diesel Auxiliary Board Rooms 3EA & 3EB Hechanical Equipment Rooms A & 0 Instrument
- Shop, HG Set
- Rooms, Battery Room 1, and Battery Board Room 1
Auxiliary Instrument Room 1
Unit 1 and 2 Computer Room Communications Battery/Board
- Room, Communications
- Room, HG Sets, Battery Board Room 2, and Battery Room 2 Auxiliary Instrument Room 2 Shutdown Board Room B
Shutdown Board Room 0 Auxiliary Instrument Room 3 Unit 3 Computer Room HG Set Rooms, Battery Room 3, and Battery Board Room 3 Smoke Duct Smoke Smoke Smoke Smoke Smoke Duct Duct Smoke Smoke Sino ke Annunciation Actuate Damper Annunciation Annunciation Annunciation Annunciation Annunciation Actuate Damper Annunciation Annunciation Annunciation Annunciation 069<1k
TABLE 3. 11.A (Cont'd)
Building-Elevation 32.
Control Bay 606 33.
Control Bay 606 34.
Control Bay - 606, 617 35.
Control Bay - 617 36.
Control Bay - 617 37.
Control Bay - 617 38.
Control Bay - 617 39.
Control Bay - 617 40.
Control Bay - 617 Control Bay 617 12.
Control Bay - 621 43.
Control Bay 621 Turbine 565 45.
Turbine 586 46.
Turbine 586 47.
Turbine 586 48.
Intake Pumping Station LOCAL
- PAAP, 1-25-323 3-25-324 1-25-328 None None None None None None 3-25-329 None None 0-25-297 1-25-283 1-25-334 3-25-293 0-25-296 Area Protected/
Spreading Room A Spreading Room B
Hechanical Equipment Room, Locker Room, Toilet, Instrument Calibration Room, Shift Engineer Office, and Kitchen.
Unit 1 Control Room Shutdown Board Room A Shutdown Board Room C
Unit 2 Control Room Relay Room Unit 3 Control Room NRC Room, TSO Operating Room, Locker Room, Toilet and Hechanical Room Shutdown Board Room E
Shutdown Board Room F
Cable Tunnel to Intake Pumping Station Cable Tray Zones A, B, L C Cable Tray Zones A, 8, C,
8 D
South Hall Intake Pumping Station Detector Heat and Smoke Heat and Smoke Heat and Smoke Smoke Duct Duct Smoke Smoke Smoke Heat and Smoke Duct Duct Smoke Heat Heat and Smoke Smoke Smoke Actuate Preaction System Actuate Preaction System Actuate Preaction System Annunciation Actuate Damper Annunciation Annunciation Annunciation Annunciation Actuate Preaction System Actuate Damper Actuate Damper Annunciation Actuat.e Fixed Spray Actuate Fixed Spray Annunciation Actuate Prcaction System 0694k