ML20085M632
ML20085M632 | |
Person / Time | |
---|---|
Site: | Browns Ferry ![]() |
Issue date: | 11/11/1991 |
From: | TENNESSEE VALLEY AUTHORITY |
To: | |
References | |
RTR-NUREG-1437 AR, S, WM, NUDOCS 9111110246 | |
Download: ML20085M632 (25) | |
Text
.
's NUMARC INDUSTRY SURVEY IN SUPPORT OF LICENSE RENEWAL RULEMAKING AQUATIC BIOLOCY DEPARTMENT RESPONSE TO AQUATIC RESOURCE QUESTIONS Browns Ferry Nuclear Plant (BFN) 1.
Alternative thermal limitations of 90 F maximum temperature (Tmax) and 5 F maxiraum temperature rise (ATmax) without restrictions on TVA's operation of the plant cooling system were granted on an interim basis by EPA an July 15, 1977. A supplemental 316(a) demonstration prepared in l
, s.' included that a 90 F (Tmax) and 10 F (ATmax) would prev W tsr the protection of the aquatic biota in Wheeler Res, BFN Unit 3 was licensed to operate by the NRC on.,uiy 2, 1976. The reliceasing for units 1 and 2 was effective on August 20, 1976.
2.
NPDES enforcement actions and violations of discharge permit conditions are provided in attached printouts, 3.
A revised NPDES permit issued in 1984 deleted previous requirements for monitoring of water quality parameters in Wheeler P.eservoir.
Therefore, no significant impacts were described related to water quality parameters.
4.
A report cn water quality and biological conditions in Wheeler Reservoir during 1980 presented the following findi gs:
- a. Operation of BFN had little or no effect on phytoplankton during tne variance period of 93 F temperature limitation,
- b. Any effects to zooplankton from a short-term 93 F limit are expected to be reversible, if they occurred.
- c. Benthic macroinvertebrates were not affected by the temperature differential on the two sampling dates.
- d. Total catch and C/E results for fish indicated that increased water temperature did not result in avoidance of the dif f user area by any of the five dominant species.
In December 1981, the NRC issued an amendment to the Appendix B Environmental Technical Specifications which deleted the requirements in Section 4.1 for benthic, phytoplankton, and zooplankton monitoring, fish population studies, and entrainment studies on fish eggs and larvae. This monitoring program had been in place for 13 years since operational status at BFN was achieved. No significant impacts to the aquatic biota were identified during this monitoring program.
As part of a revised hTDES permit including a 316(a) thermal variance, issued in 1984, the Alabama Department of Environmental Management (ADEM) required TVA to submit plans for a special biological monitoring program. This program was for the purpose of verifying that the 316(a) thermal variance will assure the protection and propagation of a balanced, indigenous population of shellfish, fish and wildlife.
9111110246 911111 l
PDR NUREG 1437 C PDR
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This thermal variance monitoring program, initiated in 1985, included larval fish sampling to estimate annual reproductive success of sauger and annual cove rotenone samples (3) to determine trends in fish standing stocks in Wheeler Reservoir. Monitoring results he,.
not indicated any impact to either sauger or the overall fish population resulting from the revised thermal limitations at b r'N.
Although BFN has been off line since August 1985, two other phases of this monitoring program to monitor adult sauger are to be initiated when the plant resumes at least one unit operation.
A decreasing trend for sauger in Wheeler Reservoir has been observed from the thermal variance monitoring, however, this trend seems to be symptomatic of a general decline in sauger throughout the Tennessee River System and not plant related.
No apparent trends have been identified for total fish standing stocks in Wheeler Reservoir.
5.
Seascnal sampling to estimate entrainment of fish eggs and larvae and weekly sampling to estimate impingement of adult fish were conducted as part of operational montioring at BEN.
Results of this monitoring through 1980 indicated no significant effect on Wheeler Reservoir fish populations. Subsequently, with EPA approva.
entrainment and impingement monitoring at BFN were discontinued. Annual entrainment of fish eggs and larvae during 1977 through 1980 is summarized in the attached table (table 51) from a 1980 monitoring report. A table (table 37) from the 1980 monitoring report which lists species and numbers of fish impinged during 1980 is also attached. A figure (figure 1) is also included which shows estimated monthly impingement for shad and all other species combined during 1974 through 1979.
6.
No significant aquatic habitat enhancement or degradation has occurred in the vicinity of BFN to result in an increase or loss of biological resources. There has been some increase in coloniention by introduced aquatic macrophytes, but no related impacts to the aquatic biota of Wheeler Reservoir have been observed.
7.
Significant impacts or alterations to use of the aquatic resources in the vicinity of the cooling water systems of BFN have not been observed.
Seasonal attraction by some fish species to the diffuser discharge may have concentrated recreational fisherman in this area during plant operation.
8.
We do not have the information necessary to answer this question.
9.
A copy of the supplemental 316(a) Demonstration Report (February 1983) for BFN is enclosed.
Determinations were subsequently made to adopt the alternative thermal limitations of 900F maximum temperature and 10 F maximum temperature rise without any restrictions on TVA's operation of the plant cooling system and the balance of the TVA power system to meet these limitations.
In addition, the determination provided for the use of a 24-hour running average of the temperature at the 5-foot depth at the edge of the mixing zone to determine compliance with the limitations.
t TABLE 51 ANNUAL ENTRAINMENT (PERCENT) OF FISH EGGS AND LARVAE BY FAMILY AT BRQWNS FERRY NUCI. EAR PLANT FROM 1977-1980 Estimated Entrainment (Percent)
Family 1977*
1978**
1979**
1980**
Unidentifiable eggs 0.7 5.9 114.9 1.2 8
Clupcidae eggs I
NC NC NC j
Cyp rinidae NC NC NC 0.8 j
Catostomidae eggs NC NC-NC I
Sciaenidae eggs 2.7 3.6 8.0 6.5 Unidentifiable larvae 12.1 5.9 5.5 18.0 i
Petromyrontidae NC NC I
NC
]
Lepisosteidae NC I
NC NC Clupeidae 9.1 5.3 4.3 15.0 Hiodontidae 1.2 2.1 4.5 1.2 Cyprinidae 2.9 2.3
- 7. 8 6.0 Catos tomidae -
4.1 19.2 3.1 3.0 Ictaluridae 31.5 16.4 6.4 12.2 Cyprinodontidae NC I
25.9 I
Poec1111dae NC I
NC NC Percichthyidae
-11.8 14.7 5.3
-7.9 Centrarchidae 3.5 2.2
- 3. 6 14.8 Percidae 12.7 14.7 13.8 6.2 Sciaenidae 6.3 4.4 8.5 7.1 Atherinidae R
R I
NC Total-Egga 2.7 3.6 8.1 6.1 Total Fish 9.0 5.4 4.5 13.6 Mean Hydraulic Entrainment 12.0 13.3 9.0 9.6
- Based on densities and weighting f actors from TRM 293.0
- Based on densities and weighting factors f rom TRM 294.5.
" Seventy-six specimens collected in intake basin, six collected in reservoir sampling; thus high entrainment estimate.
I - Collected in intake samples but not in reservoir (TRM 293.0-1977; TRM 294.5-1978-1980) samples, entrainment estimate not possible.
R - Collected in reservoir samples but not in intake samples, entrain-ment estimates effectively zero.
NC - None collected in either reservoir or intake samples.
139
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TABLE 37 Continued
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I Co acn Scientific Name
!!ar.e Jan.
Feb.
Pie rc h April May.
June July August B & Oct.
Nov.
Nc.
Tetal Lepomis gulosus Warmouth o
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0 0
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1 3
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0 18 60
- 5. vitreum vitreum Walleye 0
0 0
1 0
0 0
0 0
0 0
0 1
Aplodinotus grunniens Freshveter drum 409 374 3,740 4,750 846 359 271 159 181 424 401 978 12.872 TOTAL 7,350 3,548 34,659 23,442 1,602 531 852 2,788 3.067 6,778 16,380 61,333 162.350
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ENCLOSURES Cl A 5 tiiris M
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BROWNS FERRY NUCLEAR PLANT
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Browns Ferry Nuclear Plant
. Answers to Waste Management Questions A.
Spent Fuel 1.
Current techniques used for at-reactor storage:
.A.
Roracking of spent fuel pools D.
Longer fuel burnup 2.
Current techniques will be continued but may be supplemented by fuel rod consolidation.
3.. Anticipate using the following techniques until off-site spent fuel storage becomes avallatle:
A.
Reracking of spent fuel pools D.
Longer fuel burnup E.
Fuel rod consolidation followed by above-ground dry storage 4.
Yesr the above techniques vill be adequate.
5.
No.
6.
Yes.
7.
Building above-ground dry storage facilities.
4 B.
Low-level radioactive waste management responses:
1.
Under the current scheme for LLRW disposal there will be sufficient capacity for wastes generated by TVA plants during the license renewal period provided the requirements of the Southeast regional compact are complied with by member states.
Current plans call for a new disposal facility to go into operation in the year 2013 to serve the Southeast for 20 years.
2.
If TVA sites are denied access to a licensed disposal site for a short period of time, TVA plans to store waste onsite until access is again granted. This storage facility could either be in tho existing onsite storage facilities at Browns Ferry or Sequoyah or by some other method.
3.
Methods of LLRW management currently utilized by TVA:
The majority of dry active waste (DAW) from TVA's two sites is currently being shipped to a vendor for waste processing. The waste is decontaminated, compacted or incinerated, packaged and shipped for disposal at Barnwell, South Carolina.
In addition to DAW processing, one TVA site has begun shipping low activity resin for compaction by a vendor.
The sites have compaction capabilities onsite as well as some decontamination equipment which can be used in addition to or in lieu of the vendor contract.
Minimization practices such as sorting of materials for reclaimable items prior to shipment to the vendor, use of incinerable materials whenever possible, prohibition of unnecessary materials in the regulated areas, and training of personnel in the appropriate disposition of contaminated materials are implemented by the sites.
Percentage of current LLRW volume managed by:
A.
Waste compaction-50%
B.
Waste segregation and sorting prior to shipment-7%
C.
Decontamination of wastes-10%
D.
Dewatered resins or sludges-13%
E.
Incineration-20%
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. Anticipated plans for LLRW management to be utilized by TVA sites during the remainder of the operating license and through the license renewal term:
TVA plans to continue to utilize vendor services for the majority of their DAW processing or resin compaction.
Increased uso of incinorablo materials will result in increased usage of the incineration option of the contract. Offsite vitrification services which should be available in the near future will also be utilized if necessary.
Other technology such as off-site metal molting will be examined for applicability for TVA.
The majority of oil solidification will be superceded by oil burning or decontamination.
Oil pillows or oily rags containing oil in amounts loss than one percent by waste volume will be wrung out and shipped to Barnwell.
The importance of minimization will continue to be stressed.
Percentage of anticipated waste volumo will be managed by:
A.
Waste compaction-17.5%
B.
Waste segregation and sorting prior to shipment-12.5%
C.
Decontamination of wastes-10%
D.
Dewatered resins and sludges-22.5%
E.
Incineration-37.5%
5.
TVA does not anticipate the need to acquire additional land for the storage of LLRW for the operating lifetime of the plant, including a 20-year period of license renewal.
6.
Soo item 10.
7.
Yes.
8.
TVA may acquire temporary storage vaults for uso onsite or some construction may be necessary. to modify.
partially completed storage modulos.
Some construction may be necoscary at pWR sites for storage of used steam generators onsite.
o 9.
TVA does anticipate major plant modifications that are likely to generato unusual volumes of low-level radioactive wasto prior to or during and after the relicensing period. These modifications include activities such as changeout of steam generators.
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replacemeat of feodwater heaters, replacement of various heat exchangers including the containment spray j
heat exchanger, and replacement of condenser tubes.
L
- 10. The activities mentioned in item 9 may occur between the year 2000 and 2030.
C.
Mixed low-level radioactive wanto responso:
i omitted por your June 15 clarification letter.
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1 SEQUOYAH NUCLEAR PLANT l
Sequoyah Nuclear Plant Answers to Waste Management Questions A.
Spent Fuel 1.
Current techniques used for at-reactor. storage:
A.
Reracking of spent fuel pool D.
Longer fuel burnup 2.
Current techniques will be continued but will be supplemented by fuel rod consolidation and above-gret:nd dry storage in concrete vaults or casks.
3.
Anticipate using the following techniques until off-site spent fuel storage becomes available:
A.
Reracking of spent fuel pools D.
Longer fuel burnup E.
Fuel rod consolidation followed by above-ground dry storage 4.
Yes, the above techniques will be adequate.
5.
No.
6.
Yes.
7.
Building above-ground dry storage facilities.
a 4
B.
Low-level radioactive waste management responses:
1.
Under the current schomo for LLRW disposal thoro will bo sufficient capacity for wastos generated by TVA plants during the licenso renewal period provided the requirements of the Southeast regional compact are complied with by member states. Current plans call for a new disposal facility to go into operation in the year 2013 to serve the Southeast for 20 years.
2.
If TVA sitoo are denied access to a licensed disposal site for a short period of timo, TVA plana to storo wasto onsito until accoes in again granted. This storago facility could olther be in thu existic.g onalto atorage f acilitios at Browns Ferry or Sequoyah or by some other method.
3.
Methods of LLRW management currently utilized by TVA:
The majority of dry active wasto (DAW) from TVA's two nitoa is currently being chipped to a vendor for westo procenalng. Tho waste is decontaminated. compacted or incinerated, packaged ar.d shipped f ar disposal at Barnwoll, South Carolina.
In addition to DAW processing, one TVA sito has begun shipping low activity resin for compaction by a vendor. The sites have compaction capabilition onsite as well as somo decontamination equipment which can be used in addition to or in lieu of the vendor contract.
Minimization pra;ticos such as sorting of materials for reclaimable items prior to shipment to tho vendor, use of incinerable materials whenever possible, prohibition of unnoccasary materials in the regulated arcan, and training of personnel in the appropriato disponLLlon of contaminated materials are imptomonted by the cites.
porcentage of current LLRW volumo managed by:
A.
Wasto compaction-50%
B.
Waste segregation and sorting prior to shipment-1%
C.
Decontamination of wasten~.10%
D.
Dewatered resins or sludges-13%
E.
Incineration-20%
4.
Anticipated plans for LLRW management to be utilized by TVA sites during the remainder of the operating licenso and through the licenso renewal tonn:
TVA plans to continue to utilize vendor services for the majority of their DAW processing or resin con.p a c tion.
Increased use of incinerable materials will result in increased usage of the incineration option of iho contract. Offsito vitrification services which should be available in the near future will also be utilized if necessary. Otbei technology such as off-sito metal molting will be examino0 fer applicability for TVA.
The majority of oil solidification will be superceded by oil burning or decontamination. Oil pillows or oily rags containing oil in amounts loss than one porcent by wasto volumo will be wrung out and shipped to Barnwoll. The importance of minimlzation will continue to bo stresnod.
Percentage of anticipated waste volume will be managed by:
A.
Waste compaction-17.5%
B.
Waste segregation and sorting prior to shipment-12.5%
C.
Decontamination of wastes-10%
D, Dewatered resins and sludges-22.5%
E.
Incinoration-37.5%
5.
TVA does not anticipato the need to acquire additional land for the storage of LLRW for the operating lifetimo of the plant, including a 20-year period of license renewal.
6.
Soo item 10, 7.
Yes.
8.
TVA may acquire temporary storage vaults for use onsite or some construction may be necessary to modify partially completed storage modules.
Some construction may be necessary at FWR sites for storage of used steam generators onsite.
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9.
TVA does anticipate major plant modifications that are likely to generate unusual volumes of low-level radioactive waste prior to or during and after the relicensing period.
These modifications include activities such as changeout of steam generators, replacement of feedwater heaters, replacement of variouc heat exchangers-including the containment spray heat exchanger, and replacement of condenser tubes.
- 10. The activities mentionod in item 9 may occur between the year 2000 and 2030.
C.
Mixed low-level radioactive waste response:
Omitted per your June 15 clarification letter.
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9 RESPONSE TO AQUATIC RESOURCE QUESTIONS
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4 RESPONSE TO SOCIOECONOMIC QUESTIONS
SOCIOECONOMIC QUESTIONS Questions 1 and 2, permanent (i.e., annual) vorkers on site:
BDJ SQt!
HM EH 5/31/90 2,228 1,805 1,766 127 1985 1,539 1,488 1,726 527 1980 2,000 900 1975 1,240 721
.i umm
- 3. A. -
Typical planned outage For a typical planned outage TVA's goal is to limit additional I
temporary workers to approximately 400.
Length of the most recent outage was 77 days. The outage ran from 3/17/90 to 5/24/90.
The cost information for this outage is not available at this time.
Attached is the major activity / dose summary for the most recent outage.
Dose received by permanent vs temporary workers is not available at this time.
B.
TVA has no planned ISI outage.
ISI's are integrated into the planned refueling outage at a point where the least impact occurs.
I C.
The most recent outage discussed in A.
above is the largest outage to date.
Attachment i
l
.4.
W A_fAYMENTS IN LIEU OF TAXES Section 13 of the TVA Act provides for TVA to pay annually to states and counties 5 percent of its gross revenues from the sale of power in the preceding fiscal year, excluding revenues from power sold to Federal agencies.
One-half of the annual payment is divided among the States in the same proportion that the investment in TVA's power property in each State relates to the total investment in TVA's power property; the remaining half is divided in the same proportion that TVA's power revenues (excluding Federal sales) in each State relate to TVA's total power revenues (excluding Federal sales). The annual payments are made in monthly installments.
[13nal Year 1980 Total TVA in-lieu-of tax 113,676,118 Depreciated value of Nuclear property
$ 6,491,465,666 Depreciated value of TVA power property 10,772,534,731 Fiscal _ Year 1985 Total TVA in-lieu-of tax 188,247,962 Depreciated value of Nuclear Property 11,177,801,807 Depreciated value of TVA power property 16,612,683,125 Fiscal Year 1989 Total TVA in-lieu-of tax 231,980,455 Depreciated value of Nuclear property 14,453,682,501 Depreciated value of TVA power property 20,059,134,193
- Property values are September 30 of the year preceding the beginning of the 'licci year.
i SEOUOYAH UIC4 OUTAGE Largest - 3320 workers' badged (total)
Major ' Taghjlt Actual do2m (total man-rem)
Resistance thermal detector modifications 151 REM
-Upper head injection removal 51 REM Steam generator maintenance 165 REM
. Post accident monitoring 44 REM Reactor coolant pump repair / modification 34 REM l
Refueling Operations 150 REM
=
Breakdov12 of TVA and contract worker doses is being compiled, but is not yet available.
.