ML19253A751
| ML19253A751 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 08/15/1979 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19253A752 | List: |
| References | |
| NUDOCS 7909110157 | |
| Download: ML19253A751 (25) | |
Text
.
p nuan UNITED STATES E
- 3. c ~j NUCLEAR REGULATORY COMMISSION
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j WASHINGTON. D. C. 20555 e
%, '...../
TENNESSEE VALLEY AUTHORITY DOCKET NO. 50-259 BROWNS FERRY NUCLEAR PLANT, UNIT N0. 1 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 52 License No. DPR-33 1.
The Nuclear Regulatory Ccmission (the Commission) has found that:
A.
The application for amendments by Tennessee Valley Authority (the licensee) dated January 5,1979, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Comission's rules and regulations set forth 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 oublic, and (ii) that such activities will be conducted in compliance with the Comission'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 Commission's regulations and all applicable requirements have been satisfied.
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 License No. DPR-33 is hereby amended to read as follows:
7009110157,
333131
. (2) Technical Specifications The Technical Specifications contained in Appendices A and B, as revised through Amendment No. 52, 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 the date of its issuance.
FOR THE NUCLEAR REGULATORY COMMISSION
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Thomas i'Ippolito, Chief Operating Reactors Branch #3 Division of Operating Reactors
Attachment:
Change to the Technical Specifications Date of Issuance: August 15, 1979 n,,,. -,
af ).j -$ E) ' '
ATTACHMENT TO LICENSE AMENDMENT NO. 52 FACILITY OPERATING LICENSE NO. DPR-33 DOCKET NO. 50-259 Revise Appendix B as follows:
1.
Remove the following pages and replace with identically numbered pages:
1/2 3/4 41/42 2.
Marginal lines indicate revised area. Overleaf pages are provided for convenience.
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q9 a d.3 s. O,
1.0 DEFINITIONS The following ter=s are defined for unifom interpretation of these specifications.
Adrinistrative Teminolocy Environ = ental limiting cenditica for operation--any limiting condition for plant operation as stated in Section 2 of the Browns Ferry Nuclear Plant Environmental Technical Specifications.
Unusual event with the potential for a significant environ = ental i= pact-an event that results in nonce =pliance with an environ = ental technical specification, or en event that results in uncontrolled or unplanned releases of che=ical, radioactive, thermal, or other discharges from the Browns Ferry Nuclear Plant in excess of applicable Federal, state, and local regulations.
Thermal Properties Ther:nal limits-li=its defined for te=peratures, spatial changes in te=perature, and te= poral changes in te=perature within Wheeler Reservoir that are attributable to ther=al discharges from Er.vns Ferry Nuclear Plant.
Inteke te=perature--the avera6e te=perature at a given ti=e within the intake syste= at a point beyond the intake pu=ps.
Discharge ter:perature-the average temperature at 1 E ven time in the i
cooling vater return channel or at the condenser outlet butterfly valves.
Delta T (S T)--the difference in te=peratures of the river at the control conitors attributable to ther=al discharges from Brevns Ferr/ Nuclear Plant.
Inst n=entatica Procerties Accuracy--a =easure of the difference between the true und =easured values of a given parameter, hence a measure of error.
Mini =u= detectable level-that level belcv vhich a specific detector, instru=ent, or analysis is unable to detect the presence of a given constituent.
Sensitivity-the =ini="s enange in the variable detected by a given sensor.
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. 2.0 I.IMITING CONDITIONS FOR OPERATION 2.1 TWERMAl DISCHARGE I.IMI':S
&nitoring Reouirement Objective Reservoir water temperatures used to help show compliance The purpose of this specf fication is to with applicable standards vill limit the ther=al stress on aque. tic life be measured at the one-meter and in Wheeler Reservoir by operating Browns two-meter depths and averaged to Ferry Nuclear Plant so as to meet the give a temperature applicable to applicable water quality temperature the five-foot depth, which is the standards of the State of Alabama.
point of application of the current Alaba=a temperature standards.
Three thermal monitors spaced across Specification the reservoir in the vicinity of river mile 293.5 shall be used to l
The maxi;su:n plant-induced temperature rise measure downstream mixed water te=p-in Wheeler Reservoir caused by the discharge eratures. The system is designed of condenser cooling vater shall not exceed so that the downstream monitors serve the applicable maximu:n (currently 5 F). The as backup for one another. The maximum vater temperature measured downstream accuracy of the monitoring equip-of the plant discharge point shall not exceed ment and the sensitivity of the the applicable maximum (currently 90 F t) due therraistor sensors arg designed to the discharge of condenser cooling water, to be to.3'T and 0.01 F, respec-If these li=iting conditions are predicted, tively. The locations of temper-the plant operator shall initiate control sture monitors are displayed in measures. The control measures shall be Figure 2.1-1.
(1) to reduce the vaste heat discha.rged to the reservoir and/or (2) to request modifi-The plant-induced te=perature rise cations in the releases frem TVA's Gunters-shall be computed using a computer ville sad /or Whecier Da:ns to increase the model for the mixina of the plant strem= flow by the Browns Ferry plant.
discharge. This model requires meas-ured plant data as well as downstream reservoir temperatures as inputs and vill be updated t.s necessary to reflect current understanding of discharge mixing predictions.
All necess'a'ry plant and reservoir tTVA shall is=ediately advise the Comission data is transmitted to the Browns if mere stringent limitations (which would Ferry meteorological station. The then govern) are imposed by EPA orathe State.
meteorological station vill receive the data and record the readings once hourly. All data are auto-natically recorded and maintained for record keeping purposes.
Calculations necessary to compute parameters for showing cornpliance with applicable thermal standards vill be automatically completed by a computer situated in the meteo-rological station. All measured and and computed data which are used to help prevent exceeding the limiting conditions will be transmitted to the control rocs and vill be visually displayed for monitoring purposes.
In the event the system described is out of service, an alternate method vill be employed three times a day (once each shift) to measure the temperature rise and the
}
l maximum river voter temperature d_,00 ) -
k q[CjM safety of personnel, this paragraph
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y below the plant. When such a f 1 )
method would result in an imminent J
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j and substantial endanger =cnt to the V O UM-n S r. e em shall not apply.
Amendment No. 52
. 2.1 Continued Bases TVA, as a Federal agency, is required by Section 313 of the Federal Water Pollution Control Act Amendments of 1972 and 1977 and by Executive Order 11507, " Prevention, Control and Abatement of Air and Water Pollution at Federal Facilities," to meet applicable Federal, State, and local vater quality standards. On July 17, 1972, the State of Alabama adopted and on September 19, 1972, the Environmental Protec-tion Agency approved thermal criteria for surface waters in the State of Alabama. The current applicable thermal standards are to limit the maximum temperature rise above natural temperature before the addition of artificial heat to 5 F and the maximum vater temperature to 86 F.
In the application of these temperature criteria the te=peratures shall be measured at the one-meter and two-meter depths and avera6ed to give a temperature applicable to the five-foot depth, which is the point of application for the criteria.
The Tennessee Valley Authority has taken action to comply with applie-able thermal vater quality standards of the State of Alaba=a in the operation of the 3-unit Browns Ferry facility by installing mechanical draft cooling towers. However, inadequate cooling tower performance has resulted in drastic curtailment of power generation during sum =er periods when peak load de= ands are critical on the TVA system to =eet thermal standards.
The Browns Ferry Nuclear Plant Environmental Statement analyzed the environmental effects of operating the plant with a 10 F rise and 93"F maximum temperature limitation. This evaluation concluded that the 10 F and 93 F limitations vould be adequate to protect aquatic life. Hydro-logie studies recently conducted confirm that a 90 F limitation vould not result in excessive te=perature conditions in the cool vater fisheries habitat downstream from the plant. An additional environ = ental r.ssess=ent recently completed by TVA concludes that operation at or near the 90 F maximum temperature limitations vill not result in adverse i= pacts on the biota of the reservoir.
TVA has requested from EPA and the State of Alabsma that the maximum temperature limitation be inersased to 90 F.
The EPA stayed the 86 F maximum temperature requirements of the Brevns Ferry tiPDES permit in accordance with h0 CFR 5125.35 and LO CFR 5125 36. EPA has requested while the stay is in effect that TVA ecmply with the 90 F maximum temperature limit. A letter confirming concurrence with EPA's position was received frem the staff of Alabama Water Improvement Cc==ission dated July 18,1977 Amendment No. 52 r,--esu sj U sk O h
h-All systems described for thernal discharge limits vill be operational prior to any significant discha.ge of vaste heat. The place ent of the monitoring instru=ents shall be cuch that compliance with water quality criteria vill be demonstrated. The placement of the te=perature sensors in the vaters of Wheeler Reservoir is in accordance with the require-ments of the water quality criteria of the State of Alabs:a. Measured data is converted to digital data at the station on the reservoir. The transmission, computer storage, and monitoring equipment is being used at other facilities and has performed accurately and reliably. The diffuser-induced mixing is based upon results of field studies and laboratory tests.
Amendment No.
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u, r s-TENNESSEE RIVER WHEELER RESERVOIR TATION 5 MILE 285 2 BROWNS FERRY NUCLEAR PLANT WHEELER STATION 19 DAM
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WILE 94.
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\\D6FFUSERS caTun MILE 293.5 STATLON IS 310 MILE 274 95 4
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'i' cc 9h Figure 2.1-1
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Location of Water Temperature Monitors in Wheeler Reservoir
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Browns Ferry Nucleor Plont Figure 4.2-1 LOCAL MONITORING STATIONS BROWNS FERRY NUCLEAR PLANT ATHEN w
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Air Monitor DECATUR O
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'o, UNITED STATES 8 ) 3 v. (, i NUCLEAR REGULATORY COMMISSION 1
^ f al WASHINGTON. D. C. 20555 s.,
f TENNESSEE VALLEY AUTHORITY DOCKET NO. 50-260 BROWNS FERRY NUCLEAR PLANT, UNIT N0. 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 47 License No. DPR-52 1.
The Nuclear Regulatory Commission (the Commission) has found that:
A.
The application for amendments by Tennessee Valley Authority (the licensee) dated January 5, 1979, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's 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 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 Commission's regulations and all applicable requirements have been satisfied.
u d s) sj; q n.
c..
ts 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-52 is hereby amended to read as follows:
(2) Technical Specifications The Technical Specifications contained in Appendices A and B, as revised through Amendment No. 47
, 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 the date of its issuance.
FOR THE NUCLEAR REGULATORY COMMISSION Tfomas 6al d'<&
/Ippolito, Chief Operating Reactors Branch #3 Division of Operating Reactors
Attachment:
Changes to the Technical Specifications Date of Issuance:
August 15. 1979 33C191
ATTACHMENT TO LICENSE AMENDMENT NO. 47 FACILITY OPERATING LICENSE NO. DPR-52 DOCKET NO. 50-260 Revise Appendix B as follows:
1.
Remove the following pages and replace with identically numbered pages:
1/2 3/4 41/42 2.
Marginal lines indicate revised area. Overleaf pages are provided for convenience.
O O ds)-.
. 1.0 DEFINITIONS The following terms are defined for uniform interpretation of these speci fication's.
Adrinistrative Terminolocy Environmental li=iting condition for operation--any limiting condition for plant operation as stated in Section 2 of the Brovns Ferry Nuclear Plant Environmental Technical Specifications.
Unusual event with the potential for a significant environmental i= pact-an event that results in nonco=pliance with an environmental technical specification, or an event that results in uncentrolled or unplanned releases of chemical, radioactive, ther=al, or other discharges from the Browns Ferry Nuclear Plant in excess of applicable Federal, state, and local regulations.
Ther21 Properties Thermal li=its--limits defined for temperatures, spatial changes-in temperature, and te= poral changes in te=perature within Vheeler Reservoir that are attributable to ther=al discharges from Brovns Ferry Nuclear Plant.
Inteke te=perature--the avera6e temperature at a given ti=e within the inte.e system at a point beyond the intake pu=ps.
Discharge te=perature--the everage temperature at a given ti=c in the cooling vater return channel or at the condenser outlet butterfly valves.
Delta T (A T)--the difference in temperatures of the river at the control conitors attributable to ther=al discharges fro: Brevns Ferry Nuclear Plant.
Inst ru=entatien Procerties Accuracy--a ceasure of the difference between the true und ceasured values of a given parameter, hence a measure of error.
Mininu= detectable level-that level belev which a specific detector, instru=ent, or analysis is unable to detect the presence of a given constituent.
Sensitivity--the minicus change in the variable detected by a given sensor.
Amendment No.
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/.- * >
2.0 LIMITING CONDrff0NS FOR OPERATTON 2.1 'NERMAL DISCHARGE LIMI':S
&nitorinst Recuirement Objective Reservoir vater temperatures usee, to help show compliance The purpose of this specification is to with applicable standards vill linit the thermal stress on aquatic life be measured at the one-meter and in Wheeler Reservoir by operating Browns two-seter depths and averaged to Feray,'fuelear Plant so as Lo meet the give a temperature applicable to epPlicable water quality temperature the five-foot depth, which is the standards of the State of Alabama, point of application of thq current Alabaar temperature standards.
Three tnertal monitors spaced across Specif f eation the reservoir in the vicinity of river alle 293.5 shall be used to l
"he maximum plant-induced temperature rise measure downstream mixed water te=p-in Wheeler Reservoir caused by the discharge eratures. The system is designed of condenser cooling vater shall nog exceed so that the downstream monitors serve the tpplicable maximum (currently 5 F). The as backup for one another. The maximum vater temperature measured downstream accuracy of the monitoring equip-of the pla-t discharge point shall not exceed ment and the sensitivity of the the applicable maximum (currently 90 F t) due thermister sensors arg designed to the discharge of condenser cooling water, to be 20.3'F and 0.01 F, respec-If these limiting conditions are predicted, tively. The locationc of temper-the plant operator shall initiate control ature monitors are dispinyed in
-easures. The control measures shall be Figure 2.1-1.
(1) to reduce the vac.;e heat discharged to the reservoir and/or (2) to request modifi-The plant-induced temperature rise.
ca.icas in the releases from TVA's Gunters-s;all be computed using a ec:sputer v.lle and/or Wheeler Dans to in:rease the moisi for the mixing of the plant streamflov by the Browns Ferry plant.
discharge. This model requires meas-ured plant data as well as downstream reservoir temperatures as inputs ana vill be updated as necessary to reflect current understanding of discharge mixing predictions.
All necessary plant and reservoir tTVA shall immediately advise the Cosmiissica data is transmitted to the Browns if more stringent limitations (which would Ferry meteorological station. The then govern) are imposed by EPA or 4.he State.
meteorological station vill receive the data and record the readings once hourly. All data are auto =
matically recorded and maintained for record keeping purposes.
Calculaticas necessary to compute parameters for showing corspliance with applicable thermal standards vill be automatically completed by a computer situated in the metiro-relogical station. All measured and and computed data which are used to help prevent exceeding the limiting conditions vill be transmitted to the control room and vill be visually displayed for monitoring purposes.
In the event the system described 3 is out of service, an alternate method vill be employed three times a day (once each shift) to measure h
I f
the temperature rise and the p
A I
- !d a
j maximum river vater temperature i
s below the plant. When such a
-^
l %1i3 method would result in an imminent Amendment Mo. 47 and substantial endangerment to the safety of personnel, this paragraph shall not apply.
97
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- a. ~ *
- 2.1 Continued Bases TVA, as a Federal agency, is required by Section 313 of the Federal Water Pollution Control Act Amendments of 1972 and 1977 and by Executive Order 11507, " Prevention, Control and Abatement of Air and Water Pollution at Federal Facilities," to meet applicable Federal, State, and local water quality standards. On July 17, 1972, ihe State of Alabama adopted and on September 19, 1772, the Environmental Protec-tion Agency approved thermal criteria for surface vaters in the State of Alabama. The current applicable thermal standards are to limit the maximum temperature rise above natural te=perature before the addition of artificial heat to 5 F and the maximum vater temperature to 86 F.
In the application of these temperature criteria the te=peratures shall be measured at the one-meter and two-meter depths and averaged to give a temperature applicable to the five-foot depth, which is the point of application for the criteria.
The Tennessee Valley Au. 2rity has taken action to co= ply with applic-able ther=al vater quality standards of the State of Alaba=a in the operation of the 3-unit Browns Ferry facility by installing mechanical draft cooling tovers. However, inadequate cooling tower performance has resulted in drastic curtailment of power generation during sum =er periods when pesk load de= ands are critical on the TVA system to meet thermal standards.
The Browns Ferry Nuclear Plant Environmental Statement analyzed the environmental effects of operating the plant with a 10 F rise and 93 F maximum temperature limitation. This evaluation concluded that the 10 F and 93 F limitations vould be adequate to protect equatic life. Hydro-logic studies recently conducted confirm that a 93*F limitation vould not result in excessive temperature conditions in the cool vater fisheries habitat dovret eam from the plant. An additional environmental assegs=eut recently compleced by TVA concludes that operation at or near the 90 F maximum temperature limitations will not result in adverse i= pacts on the biota of the reservoir.
TVA has requested from EPA and the State of Alabama that the maximum temperature limitation be inersased to 90 F.
The EPA stayed the 86 F maximum temperature requirements of the Browns Ferry NPDES permit in accordance with 40 CFR 5125.35 and k0 CFR 5125.36. EPA has requested while the stay is in effect that TVA comply with the 90 F maximum temperature limit. A letter confirming concurrence with EPA's position was received from the staff of Alabama Water Improvement Co==ission dated July 18, 1977 Amendment No. 47 g.,,,,
vaul. >
.h.
All syste=s described for thermal discharge limits vill be operatienal prior to any significant discharge of vsste heat. The placersnt of the monitoring instru=ents shall be such that co=pliance with water quality criteria vill be der.onstrated. The place =ent of the te=perature sensors in the vaters of Wheeler Reservoir is in accordance with the require-ments of the water quality criteria of the State of Alabama. Measured data is converted to digital data at the station on the reservoir. The transmission, computer storage, and monitoring equip =ent is being used at other facilities and has performed accurately and reliably..The diffuser-induced mixing is based upon results of field studies 'and laboratory tests.
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47 l
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WHEELER RESEHVOIR TATION 5 MILE 285.2 DROWNS FERRY Q}\\
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W NUCLE AR PLANT WHEELER STATION 19 DAM
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DtTFUSERS MILE 293.$
STATION IS slo MILE 274 95 b
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f-Figure 2.1-1
,J Location of Water Temperature Monitors in Wheeler Reservoir Browns Ferry Nuclear Plant Figure 4.2-1 LOCAL MONITORING STATIONS BROWNS FERRY NUCLEAR PLANT ATHENS
/}g U.S. HWY 72 x
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Air Monitor DEC ATUR O
Ar Moniter a TLD Station N
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Dairy Forrn I
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UNITED STATES y, sg g
NUCLEAR REGULATORY COMMISSION C
WASHINGTO N,0. C. 20555 E
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s, v...../
TENNESSEE VALLEY AUTHORITY DOCKET NO. 50- 296 BROWNS FERRY NUCLEAR PLANT, UNIT NO. 3 AMENDMENT TO FACILITY OPERATING LICENSE Amendment Nc. 24 License No. DPR-68 1.
The Nuclear Regulatory Commission (the Commission) has found that:
A.
The application for amendments by Tennessee Valley Authority (the licensee) dated January 5, 1979, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's 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 Commission; 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 anc 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 Commission's regulations and all applicable requirements have been satisfied.
Wq
$ f v o).J u -u -
. 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-68 is hereby amended to read as follows:
(2) Technical Specifications The Technical Specifications contained in Appendices A and B, as revised through Amencment No.
24, are hereby incorporated in the license. The licensee shall operate the facility in accordnce with the Technical Specifications.
3.
This license amendment is effective as of the date of its issuance.
FOR THE NUCLEAR REGULATORY CCISIS !CN T
ef Operating Reactors Branch #3 Division of Operating Reactors
Attachment:
Changes to the Technical Specifications Date of Issuance: August 15, 1979 LN3C,. O
ATTACHMENT TO LICENSE AMENDMENT NO. 24 FACILITY OPERATING LICENSE NO. DPR-68 DOCKET NO. 50-296 Revise Appendix A ar. follows:
1.
Remove the following pages and replace with identically numbered pages:
2 3
4 41 2.
Marginal lines indicate rcvised area.
g,.._ 4 -,,. - 4 uo)..r-i..
2.0 L M TING COVDITIONS PCR OPERATION 2.1 TWD' MAL DISCHAME LIMIS Monitoring Requirement Objective Reservoir water temperatures used to help show compliance The purpose of this specification is to with applicable standards will limit the thermal stress on aquatie life be measured at the one-meter and in Wheeler Reservoir by operating Browns two-meter depths and averaged to Ferry fluelcar Plant so as to meet the give a temperature applicable to applicable water quality temperature the five-foot depth, which is the standards of the State of Alabama.
point of applicatica of thq current Alatama temperature sta.ndards.
Three thermal monitors spaced across
!peeffication the reservoir in the vicinity of river alle 293.5 shall be used to l
The maximus plant-induced temperatu*e rise measure downstresa mixed water temp-10 Vheeler Beservoir caused by the discharge eratures. The system is designed of condenser cooling vater shall nog exceed so that the downstresa monitors serve the applicable maximu:s (currently 5 F). The as backup for one another. The maximus water te=perature measured downstream accuracy of the monitoring equip-of the plant discharge point shall not exceed sent and the sensitivity of the the applicable maxim a ( a rently 90 F t) due thermister sensors arg designed to the discharge of condenser cooling water, to be 20.3'F sad 0.01 F, respec-If these limiting conditions are predicted, tively. The locations of temper-the plant operator shall initiate control ature monitors are displayed in mea n.:?e s. The control measures shall be Figure 2.1-1.
(1) to reduce the vaste best discharged to the reservoir and/cr (2) to request modifi-The plant-induced tempertture rise.
cations in the releases fres TVA's Gunters-shall be computed using a cc:sputer ville and/or Whecier Dans to increase the model for the mixing of the plant strea=flev by the Browns Ferry plant.
di s ch t.rg e. This model requires meas-ured plant data as well as downstress reservoir temperatures as inputs and vill be updated as necessary to reflect current understanding of discharge mixing predictions.
All necessary plant and reservoir tTVA shall immediately advise the Cocusission data is transmitted to the Brovns if more stringent limitations (which would Terry meteoroloCical station. The then govern) are imposed by EPA or the State.
meteorological station vill receive the data and record the readings or.cs hourly. All data are auto-r Acally recorded and maintained for reeer1 tccping purposes.
Calculations necessary to compute parameters for showing cornpliance with applicable thermal standards vill be automatically completed by a computer situated in the meteo-rological station. All measured and
)) g1 and computed data which are used to 1
.O belp prevent exceeding the Italting I
C()
conditions vill be transmitted to the t
y I control room and vill be visually O g) b displayed for monitoring purposes.
a Q\\
f In the event the system described is out of service, an alternate method vill be employed three times a day (once each shift) to measure the temperature rise and the maximum river vater temperature below the plant. When such a method would result in an imminent Amendment No. 24 and substantial endangerment to the safety of rer:ennel, this paragraph shall not apply.
g.,, n.' Q Q.h s.) ' * ' ' "
- 2.1 Continued Bases TVA, as a Federal a6ency, is required by Section 313 of the Federal Water Pollution Control Act Amendments of 1972 and 1977 and by Executive Order 11507, " Prevention, Control cnd Abatement of Air and Water Pollution Lt Federal Facilities," to meet applicable Federal, State, and local vater quality standards. On July 17, 1972, the State of Alabama adopted and on September 19. f972, the Environmental Protec-tien Agency approved thermal criteria for surface waters in the State of Alabama. The current applicable thermal standards are to limit the maximum temperature rise above natural temperature before the addition of artificial heat to 5 F and the maximum vater temperature to 86 F.
In the application of these temperature criteria the te=peratures shall be measured at the one-meter and two-meter depths and averaged to give a temperature applicable to the five-toot depth, which is the point of application for the criteria.
The Tennessee Valley Authority has taken action to co= ply vita applie-able ther=al vater quality standards of the State of Alaba=a in the operation of the 3-unit Brevns Ferry facility by installing mechanical draft cooling towers. However, inadequate cooling tower perfor=ance has resulted in drastic curtailment of power generation during su==er periods when peak load de= ands are critical on the TVA system to meet ther=al standards.
The Brovns Ferry Nuclear Plant Environmental Statement analyzed the enviren:nental effects of operating the plant with a 10 F rise and 93 F maximum temperature limitation. This evaluation concluded that the 10 F and 93 P limitations vould be adequate to protect gquatic life. Hydro-logic studies recently conducted confirm that a 90 F limitation vould not result in excessive temperature conditions in the cool vater fisheries habitat downstream from the plant. An additional environmental assess =ent recently completed by TVA concludes that operation at or near the 90 F g
= a d -"- temperature limitations vill not result in adverse i= pacts en the biota of the reservoir.
TVA has requested fre= EPA and the State of Alaba=a that the maximum temperature limitation be inersased to 90 F.
The EPA stayed the 86 F maximum temperature requirements of the Browns Ferry NPDES permit in secordance with h0 CFR 5125.35 and LO CFR 5125.36. EPA has requested while the stay is in effect that TVA comply with the 90 F maximum tenperature limit. A letter confir=ing concurrence with EPA's position was received from the staff of Alabama Water Improvement Co==ission dated July 18, 1977
.~ m Amendment No. 24 A,,,,' '
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All syste=s described for ther=al discharge limits vill be operational prior to any significant discharge of vaste heat. The placement of the monitoring instru=ents shall be such that co=pliance with water quality criteria vdll be demonstrated. The place =ent of the te=perature sensors in the vaters of Wheeler Reservoir is in accordance with the require-ments of the water quality criteria of the State of Alabama. Measured data is converted to digital data at the station on the reservcir. The transmission, computer storage, and monitoring equip =ent is being used at other facilities and has performed accurately and reliably. The diffuser-induced nixing is based upon results of field studies'and laboratory tests.
.,e,.-?A Amendment No. 24
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U TENNESSEE RIVER WHEELER RESERVOIR TATION 5 MILE 205 2 BROWN 3 FERRY I
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Figure 2.1-1 s,
U Location of Water Temperature Monitors in Wheeler Reservoir ij Browns Ferry Nuclear Plant
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