ML17339A704
| ML17339A704 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 03/18/1980 |
| From: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17339A705 | List: |
| References | |
| NUDOCS 8003210425 | |
| Download: ML17339A704 (14) | |
Text
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A CCESSION t hR:8003210<>25 OOC ~ DATE: 80/03/18>>OTARIZEO:
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RECIP ~ NA>E RECIPIENT AFF Il.lATl0>>
SCH+EACER~A, Operating Reactors Branch 1
SUOJFCT:
Hesponds to 791119 ltr reauestina aadl info on condensate polishing demineralizers 8
steam aenerator repair.
Installation of oemineralizer sys does not reauire mod to Tech Specs'OCYTE 7
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March 18, 1980 L-80-87'ffice of Nuclear Reactor Regulation Attention:
Mr. A. Schwencer, Chief Operating Reactors Branch 81 Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, D.
C.
20555
Dear Mr. Schwencer:
Re:
Turkey Point Units 3
& 4 Docket Nos.
50-250 and 50-251 Steam Generator Re air This letter is in response to your letter dated November 19, 1979 which requested additional information on the condensate polishing demineralizers and our planned steam generator repair.
The responses to the questions enclosed with your letter are provided in Attachment 1.
The planned installation of a condensate polishing demineralizer system at Turkey Point Units 3
& 4 has been reviewed by the Turkey Point Plant Nuclear Safety Committee.
They have concluded that the planned installation of the condensate polishing demineralizer system does not involve an unreviewed safety question or require a modification to the Facility Technical Specifications.
A copy of our evaluation is attached as Attachment 2
in accordance with your request.
Please feel free to call me if you should have any additional questions about this matter.
Very truly yours, Robert E. Uhrig Vice President Advanced Systems
& Technology REU/GDW/ah Attachments cc:
J.
P.
O'Rei lly, Region II Harold f. Reis, Esquire gaol 5
mls
A.
Provide the following information regarding the full flow condensate polishing demineralizer system (contention 7).
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h and its concentration at point of release.
Include regenerant ionic species as well as contaminants removed from the demineralizers.
ANSWER The condensate polishers planned for installation at PTP 3 and 4 are of the Powdex type.
Regenerant chemicals will not be utilized.
FPL's current scheme for discharge of the polisher wastes includes a solids-water separation
- process, with high quality supernatant liquid being discharged into the closed cooling system, and solids held for land type burial.
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01 the waste.
ANSWER:
A description of Powdex polisher waste is provided in the attached paper by Dr. Robert Kunin.
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Condensate polishers planned for PTP 3 and 4 do not involve a regeneration process.
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h discharge.
ANSWER:
Same as 83.
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p1 the demineralizer waste.
ANSWER:
Under the currently proposed scheme of waste disposal, only high quality supernatant liquid would be discharged into the facility's closed cooling water system.
It does not appear that dilution of the supernatant liquid prior to discharge will be required.
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discharge.
ANSWER:
The point of discharge is expected to be on the discharge side of the facility.
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immediate area of the discharge.
ANSWER:
Under FPL's current plans for handling condensate polisher wastes, only high quality supernatant liquid would be discharged into the facility cooling canal system.
The discharge point would be at the facility's discharge basin.
The discharge stream is not expected to exceed 150 gpm.
Flow rate through the facility discharge basin due to forced pumping is approximately 1.8X106 gpm with all circula-ting water pumps running.
Due to the high quality of the discharge, FPL has no minimum requirement for circulating flow during the discharge.
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prior to release.
ANSWER:
FPL's current plan for the handling of condensate polisher waste is as follows:
Spent resins would be backwashed as a resin-water slurry (using condensate quality backwash water), into a backwash receiver tank.
Powdex resin and other solids would then be separated from the slurry leaving a high quality supernatant liquid for discharge into the facility cooling canal system.
We plan to dispose of the solid resins by land burial.
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ANSWER:
It is presently estimated that there will be no environmental degradation caused by the effluent release as a result of the operation of the full flow condendate polishing demineralizer system.
The water quality of the polishing demineralizer system effluent discharge is expected to be superior to the water quality of the cooling canal
- system, Biscayne Bay, or Card Sound, FPL has been issued a National Pollutant Discharge Elimination System (NPDES) permit for Turkey Point Plant, NPDES bFL001562
by the United States Environmental Protection Agency (EPA) on June 14, 1978.
That permit authorizes discharges to the circulating water cooling canal system without limitations or monitoring requirements provided that there is no surface discharge to Biscayne Bay or Card Sound.
The effluent dis-charge from the full flow condensate polishing demineralizer system will be consistent with the terms and conditions of this permit.
The permit requires FPL to monitor the water quality of the circulating water cooling canal system.
Grab samples must be taken quarterly at the outlet from Lake Warren and must include the following parameters:
salinity; total suspended solids; and total zinc, iron and copper.
Results are submitted in reports annually on January 31 of each year.
In the event of indications of primary to secondary
- leakage, samples will be collected from the backwash receiver tank and tested for radioactivity prior to disposal of the wastes.
Liquid radioactive releases.
are control.led by Appendix A of the Turkey Point operating licenses (Technical Specifications, Section 3.9) as well as by written procedures.
Both quantity and concentrations are controlled.
The releases are required to and do meet the restrictions imposed by 10 CFR Part 20 and Part 50, Appendix I.
Disposal of any radioactively contaminated polisher wastes will be in accordance with applicable NRC regulations concern-ing the discharge and/or disposal of solid radioactive wastes and 'radioactive effluents.
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receiving waters near the point of discharge.
ANSWER:
Lists of organisms likely to be present in the cooling canal system have been compiled from published and unpublished sources.
The lists of organisms are presented in the following tables, Table A-1 and Table A-2.
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(referred to in contentions 7 and lie).
ANSWER:
The estimated costs for installing a condensate polishing demineralizer system for Turkey Point Units 3 and 4 is
$9. 1 million.
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d to in contention 11e).
ANSWER:
The cost involved in retubing the Turkey Point Units 3 and 4
condensers was approximately
$ 1 million per water box; or a-total of $ 8 million.
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ANSWER:
The repair of the Turkey Point Units 3 and 4 steam generators is estimated to be
$ 119.3 million (1979 dollars).
TABLE A-1 ORGANISMS OCCURRING IN THE TURKEY POINT COOLING CANAL SYSTEM (ANNUAL REPORTS, ABI 1974-1980)
ANNELIDA Polychaeta Amphictei s gunneri floridu Autolytus brevicirrata Capi tella capi tata Cauli eri ella killariensis Cirriformia filigera Dorvillea soci abilis Fabricia sp.
Glycera ambri cana Haploscoloplos foliosus Laonone salmi ci dis Lumbrineris Sp.
Maldane sarsi Marphysa sanguinea Nereis succinea Odontosyllis enopla Paraoni des lyra Pista cristata Platynereis dumel il1ii Podarke obscura Polydora ligni
'olyophthalmus pictus Pri onospi o heterobranchia Sebi stomeringos rudolphi Scyphoproctus Sp.
syllzs sp.
'erebellides stroemi Trichobranchus glaciali s Typosyllis Sp.
MOLLUSCA Gastropoda Batillaria minima Bulla striata Bulla occi dentale Crepidula fornicata Crepi dula maculosa Cyclostremiscus trilix Cyli chna cerina Hami noea el egans Hydrobi a minuta texana MOLLUSCA Gastropoda (continued)
Prunum apici num Retusa eburnea MOLLUSCA Pelecypoda Astarte nana Chione cancellata Chione gl US Diplodonta nuclei formis Gouldia cerina X,ucina multilineata Lyonsia floridana modul us carchedoni us Pitar albida Pseudocyrene floridana Tellina Sp.
Tellina al tezata ARTHROP0DA Pycnogonida Anoplodactylus lentus ARTHROPODA Crustacea Cylindroleberi s mari ae Sarsi ella ameri cana Harpacticoida Oxyurostyli s smithi Leptocheli a savi gnyi Aegathoa oculata Cymodoce fa'xoni Erichsonella filiformis Idotea metalli ca Sphaeroma quadri denta turn Elasmopus levi s Eri ch thoni us brasi liensi s
~ Grandi dierel la bonni eroi des Hemiaegina minuta
TABLE A-1 (continued)
ORGANISMS OCCURRING IN THE TURKEY POINT COOLING CANAL SYSTEM (ANNUAL REPORTS, ABI 1974-1980)
ARTHROPODA Crustacea (continued) rysianopsis alba Microdeutopus SP.
Mysis st enol epi s Taphromysi s bowmani Alpheus armillatus Hippolyte pleuracantha Palaemonetes pugio Thor floridanus Pinnixia sayana ECHINODERNATA Ophiuroidea Amphipholi s squamata MISCELLANEOUS Echiuroi d cworms Priapulid cworms Sea squirts SHELLFISHES Callinectes sapidus Penaeus SPP.
Menippe mercenaria Panuli rus argus Zimulus polyphemus.
FISHES (continued)
Centropomus undeci mali s Fundulus grandis Haemulon sci urus Arius felis Strongylura notata Meni dia beryllina Diapterus plumieri Lagodon rhomoboi des Caranx hippos Haemulon parrai, Atherinomorus sti pes Mugil cephalus Elops saurus Chaetodi pterus faber Syngnathus Sp.
Gobi onellus SP.
Selene vomer Strongylura marina Hippocampus erectus Echenei s naucrates Caranx crysos Trachinotus falcatus Menticirrhus littoralis Archosargus probatocephalus Dormitator maculatus Microgobi us microlepi s Sphoeroides testudineus Megalops atlanti ca Carcharhi nus leucas FISHES Floridichthys carpio Cypri nodon vari egatus Poeci lia latipinna Lophogobi us cyprinoi des Gerres cinereus Euci nostomus gula Belonesox beli zanus Euci nostomus argenteus Lucania parva Albula vulp s Sphyraena barracuda Opsanus beta Fundulus confluentus L,gtjanus griseus L,utjanus apodus
TABLE A-2 ORGANISMS OCCURRING IN THE TURKEY POINT COOLING CANAL SYSTEM (FPL, 1975)
Blue Green Algae Lyngbya sp.
Chroococcus planctonica OsciZZatoria sp.
Chroococcus gigantea Schizothrix calcico1a Arthrospira sp.
Spirul~ sp.
Oscillatoria minor Merismopedia g1auca Johannesbaptisia sp.
Gomphospharia sp.
Merismopedia punctata Anabaena sp.
Euglen ophyceae Astasia sp.
Eutreptia sp.
Uolvocidae Pyramkdcuonas grossi a
Cryptophysida Silicoflagellida Dictyocha ~ula Baci13 m9.ophyceae Navt.u1a sp.
~toms unid.
Cymatopleura solea Amphora oval.s Synedra ulna Nitzschia sigmoidea Synedra crysta1lina Nitzschia acicularis Su~e1la sp.
Pleurosi~ sp.
Synedra superba Nitzschia longa
Attachment 2
Condensate Polishin Oemineralizer S stem The new condensate polishing demineralizer system is planned for installation in the condensate/feedwater system at the discharge of the condensate pumps between the pumps and the No.
1 low pressure feedwater heater.
The system's function is to purify the condensate by filtration and demineralization to assure high quality feedwater to the steam generators.
The condensate polishing demineralizer system control is independent from the existing condensate/feedwater system.
When in use, the system treats full condensate flow from the condensate pumps.
A full flow bypass system has been provided to assure continuous uninterrupted condensate/feedwater system operation.
Loss of normal feedwater flow due to pipe break, pump failures, valve malfunctions or loss of outside AC power, is discussed in Section
- 14. 1. 11 of FSAR, Chapter 14.
Technical specification 3.8 discusses the steam and power conversion system.
The condensate/feedwater system is not a safety related system.
10 CFR 50.59 (a) (2) defines an unreviewed safety question as follows:
"A proposed change, test, or experiment shall be deemed to involve an unreviewed safety question (1) if the probability of occurrence or the consequences of an accident or mal-function of equipment important to safety previously evaluated in the safety analysis report may be increased; or (2) if a possibility for an accident or malfunction of a differe'nt type than any evaluated previously in the safety analysis report may be created; or (3) if the margin of safety as defined in %he basis for any technical specification is reduced."
A summary of the review of the planned addition of the demineralizer system against the foregoing definition of an "unreviewed safety question" follows.
With respect to the probability of occurrence of an accident previously evaluated in the FSAR:
As discussed previously, a full flow bypass line is provided for the condensate polishing demineralizer system.
The probability of a loss of feedwater (LOFW) accident due to a failure in the condensate polishing demineralizer system and a concurrent failure of the bypass control valve to open is extremely small.
This probability is not significant when considered in light of the frequency of feedwater transients (2 to 3 per year) as documented in Section
- 3. 1 of NUREG-0560 "Staff Report on the Generic Assessment of Feedwater Transients in PWR's designed by Babcock and Wilcox," 51ay 9, 1979.
Therefore, the probability
- of occurrence of this accident is not increased by the addition of this system.
With respect to the consequences of an accident previously evaluated in the FSAR:
The addition 'of the condensate polishing demineralizer system has no effect on
the severity of any of the accidents discussed in Chapter 14 of the FSAR.
The LOFW accident, which is the most severe accident for the feedwater
- system, has already been evaluated in the FSAR.
With respect to the probability of malfunction of equipment important to safety previously evaluated in the FSAR:
The only system affected is the condensate/
- system, which is not required to mitigate the consequences of a LOFW accident.
The addition of the condensate polishing demineralizer system will have no effect on the auxiliary feedwater system since the systems are totally independent of each other.
With respect to the consequences of the malfunction of the equipment important to safety previously evaluated in the FSAR:
For the reason stated
- above, the addition of the condensate polishing demineralizer system will have no effect on the consequences of malfunction of equipment important to safety.
With respect to the probability of an accident of a different type than analyzed in the FSAR:
As discussed earlier, the most severe accident for the condensate/
This accident has already been evaluated in the FSAR.
The addition of the condensate polishing demineralizer system does not create the possibility for a different type of accident.
With respect to the possibility of malfunction of a different type than any analyzed in the FSAR:
For the reason discussed in 2.a above, the addition of condensate polishing demineralizer system would not create the possibility of a malfunction of a different type than considered in Chapter 14 of the FSAR.
With respect to the margin of safety as defined in the basis for any Technical Specification:
The addition of the condensate polishing demineralizer system would not decrease any margin of safety discussed in the Facility Technical Specifications.
Conclusion For the reasons discussed above, addition of the condensate polishing demineralizer system does not involve an "unreviewed safety question" as defined in 10 CFR 50.59 (a) (2).
The planned addition of the condensate polishing demineralizer system has also been reviewed against the Facility Technical Specifications.
The addition of the condensate polishing demineralizer system does not require a change to Facility Technical Specifications.