ML20011E754
| ML20011E754 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 02/14/1990 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20011E751 | List: |
| References | |
| NUDOCS 9002220385 | |
| Download: ML20011E754 (8) | |
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ENCLOSURE 1 PROPOSED TECHNICAL SPECIFICATION CHANGE SEQUOYAll' NUCLEAR PLANT UNITS 1 AND 2 n.
DOCKET NOS. 50-327 AND 50-328 (TVA-SQN-TS-90-06)-
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LIST OF AFFECTED'PAGES Unit 1 i
3/4.7-37 3/4 7-39 Unit 2 3/4 7-50 k.
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PLANT SYSTEMS FIRE HOSE STATIONS
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MMITINGCONDITIONFOROPERATION 3.7.11.4 The fire hose stations shown in Table 3.7-5 shall be OPERABLE.
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APPLICABILITY: Whenever equipment in the areas protected by the fire hose stations is required to be OPERABLE.
ACTION:
With one or more of the fire hose stations shown in Table 3.7-5 a.
Rll8 inoperable route an additional-equivalent capacity fire hose to the q
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unprotected area (s) from an OPERABLE hose station within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> if the inoperable fire hose is the primary means of fire suppression; otherwise route the additional hose within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
Restore the fire hose station to OPERABLE status within 14 days or, in lieu of any other report required by Specification 6.6.1, prepare and submit j
a Spedal Report to the Commission pursuant to Specification 6.9.2 R40-1 within the next 30 days outlining the action taken, the cause of the inoperability, and the plans and schedule for restoring the station to OPERABLE status.
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<g The provisions of Specifications 3.0.3 and 3.0.4 are not applicable.
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SURVEILLANCE REQUIREMENTS 37-5 i
4.7.11.4 Each of the fire hose stations shown in Table 3.7 10 shall be demonstrated OPERABLE:
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At least once per 31 days by visual inspection of the stations.
i accessible during plar.t operations to assure all required equipment
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is at the station.
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At least once per 18 months by:
Visual inspection of the stations not accessible during plant operations to assure all required equipment is at the station,
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Removing the hose for inspection and re-racking, and 3.
Inspecting all the couplings. gaskets and replacing any degraded gaskets in At least once per 3 years by:
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Partially opening each hose station valve to verify valve OPERABILITY and no flow blockage.
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Conducting a hose hydrostatic test at a pressure of 150 psig or at least 50 psig above maximum fire main operating pressure, whichever is greater.
SEQUOYAH - UNIT 1 3/4 7-37 Amendment No. 36. 114 May 5, 1989
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s TABLE 3.7-s (Continued) g37 FIRE HOSE STATIONS LOCATION' ELEVATION HOSE RACK #
Control Building 685 0-26-1188 t
Control Building 685 0-26-1193 Control Building 669 0-26-1189 Control Building 669 0-26-1194 i:
d.- Diesel' Generator Building Corridor 722 0-26-1077 Corridor.
740.5 0-26-1080 haust Rm
'740 5N 0-26-1082 aii stoca[/Prn 722.0-2 o g 233 Q. A b 7 2 2.
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Additional Equipment Building - Unit 1
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South Wall 740.5 1-26-687 South Wall 706 1-26-686 f.
Auxiliary Building U-759 1-26-669 749 2-26-664 749 1-26-664-i 734 2-26-670 734-0-26-684 734 1-26-670 734 0-26-682 734 1-26-671 Siamese Outlet 734 1-26-672 734 1-26-665 714 0-26-660 4
714 1-26-666 714 0-26-677 706 0-26-658 690 0-26-690 690 0-26-661 690 1-26-674 Siamese Outlet 690 1-26-675 690 1-26-667 669 1-26-668 669 0-26-662 669 0-26-680 653 0-26-663 653 0-26-691 1.:. -
MAY 4 1982 SEQUOYAH
-UNIT 1-3/4 7-39 Amendment No. 13
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Table 3.7-5 (Continued)
FIRE HOSE STATIONS
_ LOCATION ELEVATION HOSE RACK #
t Control Building 685 0-26-1188 Control Building-685 0-26-1193 Control ButIding-669 0-26-1189 Control Building-669 0-26-1194 d.
Diesel Generator Building 5
Corridor 722 0-26-1077 Corridor 740.5 0-26-1080 Air Exhatst R=
7a0 5 0-26-1082 (Lube Oil StorDqC Nrn T22.0-2
- f o 2337) Add Additional Equipment Building Unit 2 N
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North Wall 740.5 2-26-687 North Wall 706 2-26-686 f.
Auxiliary Building 759 2-26-669 749 2-26-664 R104l i
749 1-26-664 734 2-26-670 734 0-26-684 734 1-26-670 734 0-26-682 734 Siamese Outlet 2-26-671 734
'2-26-672 734 2-26-665 714 0-26-660 714 2-26-666 714 0-26-677 706 0-26-658 690 0-26-690 690 -
0-26-661 690 Siamese Outlet 2-26-674 690 2-26-675 669 2-26-667 669 2-26-668 669 0-26-662 669 0-26-680 653 0-26-663 653 0-26-691 SEQUOYAH - UNIT 2 3/4 7-50 Amendment No.104 May 5, 1989
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y ENCLOSURE 2 PROPOSED TECHNICAL SPECIFICATION CHANGE SEQUOYAH NUCLEAR PLANT UNITS 1-AND 2 DOCKET NOS. 50-327 AND 50-328 (TVA-SQN-TS-90-06)
DESCRIPTION AND JUSTIFICATION FOR DIESEL GENERATOR BUILDING FIRE PROTECTION e
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e ENCLOSURE 2 Description of Change 1
Tennessee Valley Authority (TVA) proposes to modify the Sequoyah Nuclear-Plant (SQN) Units 1 and 2 technical specifications (TSs) to revise Table 3.7-5 in TS 3/4!7.11.4. Hose Rack 0-26-2337 in the diesel generator building is being added to the tabic. Additionally, a typographical error in Surveillance Requirenent 4.7.11.4 for Unit 1 is being changed to correctly reference Table 3.7-5.
Reason for Change In TVA's SQN fire protection program reevaluation, which was transmitted to NRC on January 24, 1977, TVA indicated that a single impairment in the fire protection system or direct support system would not impair both primary and backup fire protection capability. As identified in a-November 17. 1987, letter to NRC, both the automatic sprinkler system for the corridor and the corridor fire hose station in the diesel generator building were supplied by a single and common line from the fire protection yard water main. Also, both systems were controlled by a common post indicator valve. To correct this deficiency, TVA has installed a second supply line to the diesel generator building and an independent fire hose station on Elevation 722.
The fire hose station.
l Hose Rack 0-26-2337, is being added to the appropriate portion of the TSs.
Justification for Change The SQN TSs contain surveillance requirements for fire protection systems that protect equipment required for safe shutdown. Since the recently i
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~ added fire hose station on Elevation 722 of the diesel generator building meets this criteria, it is being included in the TSs.
The proposed change is a conservative addition to the TSs.
The correction of the typographical error is an administrative change and has no effect on hardware or analysis.
Environmental Impact Evaluation The proposed change request does not involve an unreviewed environmental question because operation of SQN Units 1 and 2 in accordance with this change would not:
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Result in a significant increase in any adverse environmental impact previously evaluated in the Final Environmental Statement (FES) as modified by the Staff's testimony to the Atomic Safety and Licensing Board, supplements to the FES, environmental impact appraisals, or decisions of the Atomic Safety and Licensing Board.
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Result in a significant change in effluents or power levels.
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Result in matters not previously reviewed in the licensing basis for SQN that may have a significant environmental impact.
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ENCLOSURE 3 PROPOSED TECHNICAL SPECIFICATION CHANGE
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SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 DOCKET NOS. 50-327 AND 50-328 (TVA-SQN-TS-90-06)
DETERMINATION OF NO SIGNIFICANT HAZARDS CONSIDERATIONS t
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e ENCLOSURE 3 Significant Hazards Evaluation TVA has evaluated the proposed TS change and has determined that it does-not. represent a significant hazards consideration based on criteria established in 10 CFR 50.92(c). Operation of SQN in accordance with the proposed amendment will not:
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Involve'a.significant increase in the probability or consequences of an accident previously evaluated.
The proposed addition of Fire Hose Rack 0-26-2337 is a conservative change to the SQN TSs. The installation of the second supply line to the diesel generator building and an independent fire hose station provides redundancy for the fire protection capabilities at the diesel generator building. The correction of the typographical error is an~ administrative change and has no effect on hardware. The changes therefore do not significantly increase the probability or consequences of a previously evaluated accident.
(2) Create the possibility of a new or different kind of accident from any previously analyzed.
The proposed addition of Fire Hose Rack 0-26-2337 is an appropriate change to the SQN TSs. The modifications, which are a net. safety enhancement to SQN and meet the guidelines of Branch Technical Position CMEB 9.5-1, " Guidelines for Fire Protection for Nuclear Power Plants," are completed. The addition to the TSs meets TVA's criteria of TS inclusion for fire protection systems that protect equipment required for safe shutdown. The correction of the typographical error is an administrative change and has no effect on.
hardware. The changes therefore do not create the possibility of a new or different kind of accident from any previously analyzed.
(3) Involve a significant reduction in a margin of safety.
The proposed addition of Fire Hose Rack 0-26-2337 reflects the installation of a second supply line to the diesel generator building and an independent fire hose station. These modifications provide redundancy for the fire protection capabilities at the diesel a
generator building and are therefore a net safety improvement.
The correction of the typographical error is an administrative change and has no effect of hardware. The change therefore does not significantly reduce margins of safety.
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