L-88-534, Forwards to EPA Requesting Mod to NPDES Permit FL0002208 to Include Release of Hydrazine as Federally Permitted Release
| ML17222A631 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 12/19/1988 |
| From: | Conway W FLORIDA POWER & LIGHT CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| Shared Package | |
| ML17222A632 | List: |
| References | |
| L-88-534, NUDOCS 8812280187 | |
| Download: ML17222A631 (5) | |
Text
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I'P ACCESSION.NBR:8812280187 DOC.DATE: 88/12/19 NOTARIZED:
NO FACIL:50-335 St. Lucie Plant, Unit 1, Florida Power a Light Co.
50-389 St. Lucie Plant, Unit 2, Florida Power 6 Light Co.
AUTH.NAME AUTHOR AFFILIATION CONWAYFW;F.
Florida Power S Light Co.
RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
DOCKET 05000335 05000389 NOTES:
SUBJECT:
Forwards 881202 ltr to EPA requesting NPDES permit mod re R
hydrazine discharges.
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TITLE: Licensing Submittal: Environmental Rept Amdt
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P.O. Box14000, Juno Beach, FL 33408-0420 DECEMBER 1 9 1988 L-88-534 U. S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, D.
C.
20555 Gentlemen:
Re:
St. Lucie Unit Nos.
1 and 2
Docket Nos.
50-335 and 50-389 NPDES Permit Modification In accordance with Section 3.2.4 of the St.
Lucie Units 1
2 Environmental Protection Plans, attached is a copy of a letter to the U.S. Environmental Protection Agency requesting a modification to the St. Lucie Plant NPDES permit.
The specific modification is discussed in the attached document.
Very truly yours, W.
Con Senior Vice President Nuclear WFC/MSD/cm Attachment I
cc:
Malcolm L. Ernst, Acting Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, St. Lucie Plant 88i~280i87 88i2i9 PDR ADOCN 05000335 P
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OX 14000. JUNO BEACH, FL 3340B.0420 CERTIFIED MAIL RETORH RECEIPT REQUESTED December 2, 1988 Mr. Bruce Barrett, Director Water Management Division Environmental Protection Agency Region ZV 345 Courtland Street, N.E.
Atlanta, Georgia 30308 RE:
Request for Permit Modification NPDES Permit No. FL0002208 St. Lucie Pacer Plant
Dear Mr. Barrett:
Florida Power a
Light
- Company, (FPL) hereby requests a
modification to the above-referenced NPDES permit.
This request is being made in order to include the release of hydrazine as a
"federally permitted release,"
consistent with provisions set forth in 42 U.S.C. 9601(10).
High purity water is generated at the St. Lucie Plant by a water treatment plant by way of carbon filtration and anion and cation exchange demineralization.
Much of this high quality water is routed to the secondary system and steam generators as makeup for the water/steam cycle.
Ammonium hydroxide is added for pH control and hydrazine is added for oxygen removal.
Undesirable contaminants such as chlorides from condenser leaks can contaminate the steam generator water.
Strict operating specifications require that suspended and dissolved solids be maintained at very low levels, therefore, to keep the contaminants at these low levels, a continuous steam generator blowdown is required.
This blowdown is either recovered or routed to the discharge canal.
The concentration of hydrazine in these discharges normally range from 25 ppb to 2ppm.
During overhauls and/or refueling outages the steam generators, feedwater systems<
and/or condensers may be placed 'in a static mode where the internal metal surfaces of these components must be protected from corrosion.
The typical method used is to fill the system with a
hydrazine/ammonia/demineralized water solution; This solution must then be drained and discharged to the plant's discharge canal.
FPL is requesting that these discharges, which normally occur approximately every eighteen months per unit, be included in the NPDES permit for the St. Lucie Power Plant.
an FPL Group company
Request for Permit Modification NPDES Permit No. FL+2208 St. Lucie Power Plan&
Page 2
FPI has included results of a
modeling study which was performed by KBN Engineering and Applied
- Sciences, Inc.
which indicates the "worst case" concentrations of hydrazine which could be expected during a
discharge.
In
- addition, a
toxicological review orepared by FPL is included which discusses the toxicological impact of these hydrazine releases.
h FPL believes that this information adequately documents the anticipated impact of these hydrazine discha'rges.
We believe that there will be
,no significant environmental impact from these discharges.
In, order to accurately determine the actual concentrations of hydrazine, FPL proposes to monitor for hydrazine at the compliance point in the discharge canal during a
release associated with an overhaul and/or refueling outage.
The next one of these hydrazine releases at St.
Lucie is anticipated in January, 1989.
The data collected by FPL will be reported to the EPA on the Discharge Monitoring Report submitted the month following the release.
Please feel free to contact Winifred Perkins at (407) 640-2023 if you have any questions concerning this request for permit modification.
Sincerely, T. R. Fair Manager Environmental Permitting and Programs TRP:WGP:gm Enclosure cc:
Charles Kaplan - EPA (w/encl.)
Yvonne Martin - EPA (w/encl.)
Vivek Kamath DER (w/encl.)