ML20114B307
| ML20114B307 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/10/1992 |
| From: | Hebdon F Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20114B308 | List: |
| References | |
| NUDOCS 9208260049 | |
| Download: ML20114B307 (10) | |
Text
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- ffe, UNITED STATES o
.I NUCLEAR REGULATORY COMMISSION WASHINGTON, o C. 20066 -
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TENNESSEE VALLEY' AUTHORITY i
QPCKET NO. 50-327 SE0VOYAH NUCLEAR PLANT. UNIT 1.
AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.161 License No._DPR-77_
1.
The Nuclear Regulatory Comission (the Comission) has found that:
A.
The appilcation for amendment by Tennessee Valley Authority (the licensee) dated May 26, 1992, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended Act).and the Commission's rules and regulations set forth(the in 10 CFR Chapter I; 8.
The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Comission;
.C.
There is reasonable assurance (i) that the activities authorized by this amendment-can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D.
The issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public; and E.
The issuance of this amendment is in accordance with 10 CFR Part 51 of the Comission a regulations and all-applicable requirements have been satisfied.
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2.
Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment and paragraph 2.C.(2) of Facility Operating License No. DPR-77 is hereby amended to read as follows:
(2) Technical Soecifications The Technical Specifications contained in A)pendices A and B, as revised through Amendment No. 161, are here)y incorporated in the license.
The licensee shall operate the facility in accordance with the Technical Specifications.
3.
This license amendn.ent is effective as of its date of issuance, to be implemented within 60 days.
FOR THE NUCLEAR REGULATORY COMMISSION J. l Yr--
a.
m Frederick J. HeFdon, Director Project Directorate 11-4 Division of Reactor Projects - I/II Office of Nuclear Rchetor Regulation
Attachment:
Changes to the Technical Specifications Date of Issuance: August 10, 1992
ATTACHMENT TO LICENSE AMENDMENT N0.161 FACILITY OP.1 RATING LICENSE NO,,DPR-77 DOCKET NO. 50-327 Revise the Appendix A Technical Specifications by re:c ting the pages identified below and inserting-the enclosed pages. The revised pages are identified by the captioned amendment number and contain marginal lines indicating the area of change.
REMOVE INSERT 3/4 6-29 3/4 6-29 B3/4 6-5 B3/4 6-5 F
CONTAINMENT SYSTEMS ICE CONDENSER 000R$
1.!MITING CONDITION FOR OPERATION 3.6.5.3 The ice condenser inlet doors, intermediate deck doors, and top deck doors shall be closed and OPERABLE.
APPLICABILITY:
MODES 1, 2, 3 and 4.
ACTION:
With one or more ice condenser inlet doors inoperable due to bting a.
physically restrained from opening, restore all inlet doors to OPERABLE status within I hour or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, b.
With one or more ice condenser doors open or otherwise inoperable for reasons other than action a,, POWER OPERATION may continue for up to 14 days provided the ice bed temperature is monitored at least once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and the maximum ice bed temperature is maintained less than or equal to 27'F; otherwise, restore the doors to their closed positions or OPER-ABLE status (as applicable) within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE REQUIREMENTS 4.6.5.3.1 Inlet Doors - Ice condenser inlet doors shall be:
a.
Continuously monitored and determined closed by the inlet door position monitoring system, and b.
Demonstrated OPERABLE at least once per 18 months by:
1.
Verifying that the torque required to initially open each door is less than or equal to 675 inch pounds.
2.
Verifying that opening of each door is not impaired by ice, frost, debris, or obstruction.
l 3.
Verifying that the torque required to open each door is less than 145 inch pounds when the door is 40 degrees open.
This
-torque is defined as the " door opening torque" and is equal to the nominal door torque plus a frictional torque component.
l SEQUOYAH - UNIT 1 3/4 6-29 Amendment No. 25, 131, 161 i
CONTAINMENT SYSTEMS BASES
- event that ' observed sublimation rates are equal to or lower than design predic-tions after three years of operation, the minimum ice baskets weight may be adjusteddownward.
In addition, the number of ice baskets required to be weighed each 9 months may be reduced af ter 3 years of operation if such a reduction is supported by observed sublimation datn, 3/4.6.5.2 ICE BED TEMPERATURE MONITORING SYSTEM The OPERABILITY of the ice bed temperature monitoring system ensures that the capability is available for monitoring the ice temperature.
In the event the monitoring system is inoperable, the ACTION requirements provide assurance that the ice bed heat removal capacity will be rettained within the specified time limits.
3/4.6.5.3 ICE CONDENSER DOORS The OPERABILITY of the ice condenser doort ensures that these doors will open because of the differential pressure between upper and lower containment resulting from the blowdown of reactor coolant during a LOCA and that the blow-down will be diverted through the ice condenser bays for heat removal and thus containment pressure control.
The requirement that the doors be maintained closed during normal operation ensures that excessive sublimation of the ice will not occur because of warm air intrusion from the lower containment.
If an ice condenser inlet door is physically restrained from opening,
(
the system function is degraded, and immediate action must be taken to restore the opening capability of the inlet door.
Being physically restrained from opening is defined as those conditions in which an inlet door is physically blocked from opening by installation of a blocking device or by an obstruction from temporary or permanently installed equipment or is otherwise inhibited from opening such as may result from ice, frost, debris, or increased inlet door opening torque beyond the values specified in Surveillance Requirement 4.6.5.3.1.
3/4.6.5.4-INLET 000P POSITICJ MONITORING SYSTEM The OPERABILITY of th' inlet door position monitoring system ensures that the capability is available for monitoring the individual inlet door position.
In the event the monitoring system is iroperable, the ACTION requirements provide assurance that the ice bed heat removal capacity will be retained within the specified time limits.
3/4.6.5.5 DIVIDER BARRIER PERSONNEL ACCESS D0 ORS AND EOUIPMENT HATCHES The requirements for the divider bar"ier oersonnel access doors and equipmeu hatches being closed and OPERABLE er.sure that a minimum bypass steam flow will occur from the lowe" to the upper containment compartments during a LOCA.
This condition ensures a diversion of the steam through the ice condenser bays that is consistent with the LOCA analyses.
3/4.6.5.6 CONTAINMENT AIR RETURN FANS The OPERABILITY of the containment air return fans ensures that following a LOCA 1) the containment atmosphere is circulated for cooling by the spray system and 2) the accumulation of hydrogen in localized portions of the contain-ment structuro is minimized.
SEQUOYAH - UNIT i B 3/4 6-5 Amendment No. 161
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UNITED STATES n
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.i NUCLEAR REGULATORY COMMISGION 4 Mg
- ff WASHINGTON D.C. 20566
\\....*. jf TENNESSEE VALLEY AUTHORITY DOCKET NO. 50-328 SE0V0YAH NUCLEAR PLANT. UNIT 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.151 License No. DPR-79 1.
The Nuclear Regulatory Commission (the Commission) has found that:
A.
The application for amendment by Tennessee Vallcy Authority (the licensee) dated "
?6,1992, complies with tb standards and requirements of Atomic Energy Act of 1954, as amended (the Act),
and the Commiss w.. rules and regulations set forth in 10 CFR Chapter I; B.
The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commissian; C.
There is reasonable assurance (1) that the activities authorized by this amendment can b? conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D.
The issuance of this amendment will not be inimical to thc common defense and security or to the health and safety of the-puolic; and E.
The issuance of this amendment is in accordance with l' R Part 51 of the Commission's regulations and all applicable requirements have be?s satisfied.
'l
- 2. -
Accordingly, the license is amended by changes to the Technical
.=
Specifications as indicated'in the attachment to this license amendment and_ paragraph 2.C.(2) of facility Operating License No. DPR-79 is hereby amended to read as follows:
(2) Technica1 Specifications The Technical Specifications contained in Appendices A and B, as revised through Amendment No.151, are hereby incorporated in the license.
The licensee shall operate the facility in accordance with the Technical Specifications.
3.
This license amendment is effective as of its date of issuance, to be implemented within 60 days.
FOR THE NUCLEAR REGULATORY COMMISSION nh>a t r Fr'ederick J. FleMon, Director Project Directora's 11-4 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Attachment:
Changes to the Technical Specifications Date of Issuance: August 10, 1992
ATTACHMENT TO LICENSE AMENDMENT NO. 151 FAClllTY OPERATING LICENSE NO. OPR-79 DOCKET NO. 50-328 Revise the Appendix A Technical Specifications by removt.g the pages identified below and inserting the enclosed pages. The revised pages are identified by the captionad amendment number and contain marginal lines indicating the area of change.
REMOVE INSERT 3/4 6-30 3/4 6-30 B3/4 6-5 B3/4 6-5
d CONTAINMENT SYSTEMS ICE CONDENSER DOORS LIMITING CONDITION FGR OPERATION 3.6.5.3 The ice condenser inlet doors, intermediate deck doors, and top deck doors shall be closed and OPERABLE.
APPLICABILITY:
MODES 1, 2, 3 and 4.
ACTION:
With one or more ice condenser inlet doors inoperable due to being a.
physically retrained from opening, restore all inlet doors to OPERABLE status within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or be in at least HUT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
b.
With one or more ice condenser doors open or otherwise inoperable for rea-sons other than action a,, POWER OPERATION may continue for up to 14 days provided the ice bed temperature is monitored at least once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and the maximum ice bed temperature is maintained less than or equal to 27 F; otherwise restore the doors to their closed positions or OPERABLE status (asappilcable within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT STANDBY within thenext6hoursand)inCOLDSHUTDOWNwithinthefollowing30 hours.
SURVEILLANCE REQUIREMENTS 4.6.5.3.1 Inlet Doors - Ice condenser inlet doors shall be:
Continuously monitored and determined closed by the inlet door a.
position monitoring system, and b.
Demonstrated OPERABLE at least once per 18 months by:
1.
Verifying that the torque required to initially open each door is less than or equal to 675 inch pouads.
2.
Verifying that opening of each door is not impaired by ice, frost, debris, or obstruction.
3.
Verifying that the torque required to open each door is less than 195 inch pounds when the door is 40 degrees open.
This torque is defined as the " door opening torque and is equal to the nominal door torque plus a frictional torque component.
SEQUOYAH - UNIT 2 3/4 6-30 Amendment No. 13, 118, 151
CONTAINMEM SfSTEMS BASES event that observed sublimation rates are equal to or lower than design 3redictions after three years of operation, the minimum ice baskets weight may
)e adjusted downward.
In addition, the number of ice baskets required to be weighed each 9 months may be reduced after 3 years of operation if such a reduction is sepported by observed sublimation data.
3/4.6.5.2 ICE BED TEMPERATURE MONITORING SYSTEM The OPERABILITY of the ice bed temperature monitoring system ensures that the capability is available for monitoring the ice temperature.
In the event the monitoring system is inoperable,ty will be retained within the specifie the ACTION requirements provide assurance that the ice bed heat removal capaci time limits.
3/4.6.5.3 ICE CONDENSER DOORS The OPERABILITY of the. ice condenser decrs ensures that these doors will open because of the differential pressure between upper and lower containment resulting from the blowdown of raactor coolant during a LOCA and that the blow-down will be diverted through the ice condenser bays for heat rernoval and thus containment pressure control.
The requirement that the doors be maintained closed during normal operation ensures that excessive sublimation of the ice will not occur because of warm air intrusion f rom the lower containment.
If an ice condenser inlet door is physically restrained from opening, the system function is degraded, and immediate action must be taken to restore the opening capability of the inlet door.
Being physically restrained from opening is defined as those conditions in which an inlet door is physically blocked from opening by installation of a blocking device or by an obstruction from temporary or permanently installed equipment or is otherwise inhibited from opening such as may result from 1ce frost, debris, or increased inlet door opening torque beycnd the values spec,ified in Surveillance Requirement 4.6.5.3.1.
3/4.6.5.4 INLET 000R POSITION MONITORING SYSTEM The OPERABILITY of the inlet door position monitoring, system ensures that thL :apability is available for monitoring the individual inlet door position.
In the event the monitoring system is inoperable, the ACTION requirements provide assurance that the ice bed heat removal capacity will be retained within the specified time limits.
3/4.6.5.5 DIVIDER BARRIER PERSONNEL ACCESS D0 ORS AND EQUIPMENT HATCHES The requirements for the divider barrier personnel access doors and equipment hatches being closed and OPERABLE ensure that a minimum bypass steam flow will occur from the lower to the upper containment compartments during a LOCA.
This condition ensures a diversion of the steam through the ict -andenser bays that is consistent with the LOCA analyses.
3/4.6.5.6 CONTAINMENT AIR RETURN FANS The OPERABILITY of the containment air return fans ensures that following a LOCA 1) the containment atmosphere is circulated for cooling by the spray system and 2) the accumulation of hydrogen in localized portions of the contain-ment structure is minimized.
SEQUOYAH - UNIT 2 8 3/4 6-5 Amendment No.151 l