ML18283A581
| ML18283A581 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 05/30/1975 |
| From: | Gilleland J Tennessee Valley Authority |
| To: | Anthony Giambusso Office of Nuclear Reactor Regulation |
| References | |
| Download: ML18283A581 (15) | |
Text
5RC DISTRIBUTION FOR PART 50 DOCKET MATERIAL (TEMPORARY FORM) 0 F I LE.
ZDvtro FROM: Tennessee Valley Auth.
Chattanooga, Tenn.
J E Oilleland DATE OF DOC 5"3o-75 DATE REC'D 6-5-75 LTR TWX RPT OTHER TQ:'ir. A. Oiambusso CLASS UNCLASS PROPINFQ KQGK ORIG 3 signed INPUT CC OTHER NO CYS REC'D I!.0 SENT NRC PDR XQZ=
SENT LOCALPDR DOCKET NO:
50-259 0
DESCR IPTION:
Ltr notarized 5-30-75, request-ing proposed changes th the Envtro Tech Specs
';L',; )i'lt;qf~rJ!
Reasons and
- Justifications for proposing the changes. "
Revised pages for tech spec change.
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arith regards to Envtro Monitoring Programs
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5 fg(I>< iIAIIJ{IJJB PLANT NAME:
Brogans Perry'nits 1
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Regulaia; '.'-> "'
Mr. A. Giambusso, Director Division of Reactor Licensing U.S. Nuclear Regulatory Commission Vashington, DC 20555 Mall Sadly TENNESSEE VALLEYAUTHQI=IITY~%
CHATTANQQGAs TENNESSEE 3740'I I
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(Q ANNIVERSARY QF PEQPI E IN PARTNERSHIP
<O'B5 JUI'I.'3I' U. S. HUilfhR MGUIATORY 8
COMM I SS IO7I
Dear Hr. Giambusso:
In the Hatter of the Tennessee Valley Authority
) 'ocket Nos.
50-259
)
50-260 In accordance with the provisions of'0 CFR Part 50.90, we are submitting herewith certain proposed changes to the Browns Ferry Nuclear Plant Units l and. 2 Environmental Technical Specifications (Appendix B to Facility Operating Licenses DPR-33 and. DPR-52).
Also submitted herewith are the reasons and, Justifications for proposing the changes.
These proposed, changes have been discussed with representatives of your staff and include their comments.
Very truly yours, TENNESSEE VAJZZY AUTHORITY Z. E. Gilleland.
Assistant Manager of Power Subscribed and sworn to before
- j>>i this gr~P~y of ~>t>
1975
/ i~./7 ary Public lg 'commission expires 6
d Enclosures CC:
See page 2.
Qiambusso MAY 30 'l975 CC:
Mr. Mark L. Au (ihclosures)
Nuclear Regulatory Commission 5650 Nicholson Lane Washington, DC 20555
CHEMICAL (continued) 2.2.3 Chlorine Monitorin Requirement
~0b ective Control of the use of the chlorine as a biocide in the auxiliary raw cool-ing vater system is exercised, to assure that discharge to the receiving stream is below levels vhich could be harmful to aquatic biota.
S ecification The residual chlorine in the auxiliary raw cooling vater system shall be sampled veekly during periods when the raw cool-ing vater systems are being chlorinated except as noted in section 4.1.3.
Con-centration in the main condenser cooling vater discharge will be computed. using measured concentration and condenser cooling water and auxiliary rav cooling vater flows.
A total chlorine residual of 0.05 mg/1 shall not be exceeded. at the discharge of the main condenser cooling water to the river due to chlorination of the auxiliary raw cooling water system.
If a total chlorine residual of 0.05 mg/1 is exceeded at the discharge of the main condenser cooling vater to the river due to chlorination of the auxiliary raw cooling water system, the chlorine feed shall be immediately discontinued and. not resumed until the feed rate has
- been reduced.
and the calibration of the feed. equipment checked,.
As an alternate, the concentration in the condenser circulating water may be deter-mined directly on a weekly basis, elimina-ting the need. for raw cooling water sampling or condenser cooling water flow determination.
All analyses will be performed by plant personnel using standard analytical pro-cedures for the determination of residual chlorine.
The procedure used shall be one vhich has been approved. by the
. Environmental Protection Agency for this purpose.
Surveillance instructions and records vill be kept on file in the plant.
Bases Chlorine is to be used.
as a biocide f'r the control of Asiatic clams in the auxiliary raw cooling water system.
It is expected that the use of chlorine for this purpose will be required only during the early and late stages of the spawning periods of Asiatic clams.
The raw cooling water to be treated. will be discharged. to the main condenser cooling water system.
Operating experience has shown that the reservoir vater has a chlorine demand. of about 0.5 mg/1.
Due to the relative flow of the condenser cooling vater and the auxiliary raw cooling water systems (approximately 20:1) and. the chlorine demand of the diluted. stream, it is expected that the chlorine residual will react sufficiently such that o~ chlorides will be discharged.
The flow in the main condenser cooling water system villbe determined from the design characteristics of the main condenser circulating vater pumps operating during chlorination periods.
Revised May 1975
Monitoring will be performed, by the Division of Forestry, Fisheries, and Wildlife Develop-ment using standard accepted sampling procedures on file in this division's office, Iforris, Tennessee.
Re ortin Re uirement The results will be summarized annually in one of the semiannual reports of the nonradio-logical monitoring programs.
Bases A significant proportion of the river flow will be routed through the plant for cooling
- purposes, and. during periods when larval fishes are abundant there is the potential for entrainment of large numbers of fishes.
The specified study will determine the numbers of fish eggs and. larvae entrained. in the cooling water system resu1ting from plant operation and identify the need. for possible corrective action.
(f)
Fish Im in~ement on intake Screens
~0b ective To detect and quantify fish impingement upon the intake screens.
Fish impinged. on intake screens shall be estimated three times per week with no longer than 3 days elapsing between observations.
Those fish impinged on one selected screen which has been in operation over the preceding 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> shall be collected. during screen washing and classified. as:
1) shad, and herring, 2) catfish, 3} bass (largemouth, smallmouth, and spotted bass),
- 4) crappie,
- 5) sunfish,
- 6) drum, and. 7) other species.
Total daily impingement will be estimated. for all screens in operation by applying an appropriate "weighting factor" to the data from the selected screen.
The screen selection and. "weighting factor" shall be evaluated bimonthly; the evaluation program shall consist of counting the impinged fish on each of the twelve screens for 2 days and differentiation by species and by 25mm length-class intervals.
The 2-day evaluation may be substituted for the regular week~ monitoring.
Re ortin Requirements Five copies of a monthly report to be prepared by TVA's Division of Power Production in coordination with the Division of Power Resource Planning shall be submitted. to the USAEC Division of Reactor Projects within 15 days following the end. of each calendar month.
The report shall include tabulated impingement data, bimonthly evaluation of screen "weighting factor" when applicaole, and, summary of any specific studies or investigations which TVA is conducting to evaluate the significance of impingement losses or techniques for reducing significant losses.
A copy will be sent to TVA's Division of Forestry, Fisheries, and Wildlife Development for review and. assessment.
Results of FFWD's review and assessment will be sent to the Division of Environmental Planning for inclusion in the semiannual operating report.
Bases Quantification of impinged fish upon the intake screens will provide an assessment of fish losses from normal plant operation and identify the need for possible corrective action.
Revised May 1975
-'19a-4.1.3 S ecial Studies Ob ective To demonstrate the adequacy of weekly sampling of chlorine residual during chlorination of the auxiliary raw cooling water systems by demonstrating that chlorine residual in auxiliary raw cooling water (RCW) systems remains relatively constant during chlorination.
S ecification TVA will perform special studies during the first 'two periods (including a spring and a fall period) of chlorination of the RCV systems following March 197$, which are of at least 3-weeks'uration.
During the special studies period wnen the RCW systems are being chlorinated, samples will be taken daiQ from the RCN systems and analyzed for chlorine residual.
Records of the daily sampling and analyses will be maintained.
and submitted to the NRC staff for their review following the end of the special study period.
~ Chlorine feed rate and equivalent RC'~T concen-tration will be reported for the special studies period.
Sampling during the special study period. will be considered to satisfy the monitor-ing requirements of section 2.2.3 of the environmental technical specification.
4.2 Radiolo ical Environmental Monitorin Details of Browns Ferry Nuclear Plant radiological environmental monitoring is given in "Technical Specification and Bases for Browns Ferry Nuclear Plant, Units 1 and 2."
Revised May 1975
Table 3.1.3-1 Sources of Added. Chemicals
- snd, Resulting End Product Chemicals S stem Chemical Added Source Chemical Maximuma Annual Use lbs Waste End Product Chemical Maximum Resulting End Product Annual Mean Daily lbs lbs Makeup Water Treatment Plant Alum A12(S04)3 18 H20 15,800 Al(OH)
S04 Suspended.
solidsb,c 3,700 6,800 13,500 Makeup water Treatment Plant Demineralizer Regeneration Auxiliary Steam Generator Blowdown Raw cooling water System Soda Ash Na2 C03 (100$ )
Sodium Hypochlorite NaOC1 (215 Solution)
Coagulation Aid Sulfuric Acid 985 Sodium Hydroxide (50$ )
Ammonia Hydrazine Chlorine 7,900 32950 590 270,000 205,000 Variable d.
Variable Variable Na Na OC1 Cosg. Aidb S04 Na NH3 OCl snd Cl 3,400 260 570 590 259,000
~710 59,000
~160 0 4
'40.001 Variable 1,620]
Revised a.
Based. on 24-hour operation 365 days/year at demonstrated maximum capacity of equipment.
b.
Suspended materials that will make up the water treatment plant sludge, on a dry weight basis.
c.
Estimates from suspended solids data observed at TRM 300.3.
d.
Ammonia will be added as needed. to keep pH of system at 9.0.
e.
Hydrazine will be added as needed as a DO scavenger.
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Revised Revised May 1975
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~Chan e
On page 6, section 2.2.3 has been changed in several places to make it clear that the auxiliary raw cooling water system is the system that is being chlorinated and that the specification applies to the chlorine residual resulting from this chlorination.
Under "Specification," the value 0.2 has been changed to 0.0$ to reflect the use of chlorination on a continuous basis.
Under "Monitoring Requirement" changes have been made to ensure that ana~ical procedures comply with methods recognized by the Environmental Protection Agency and to incorporate a speqial study of chlorine residual during chlorination to be used to demonstrate the adequacy of weekly sampling.
Under "Bases" changes were made to reflect continuous chlorination during the spawning periods of Asiatic clams and to indicate that the flow will be determined.
from the design characteristics of the water pumps.
On page 19, section 4.2 has been moved to page 19a, so that a new section 4.1.3 can be added to describe a special study to be performed to demonstrate the adequacy of weekly sampling of chlorine residual.
On page 24, Table 3.1.3-1 has been changed. to make the table consistent with other changes.
Basis for Chan e
In order to adequately control Asiatic clams in the auxiliary raw cooling water systems by chlorination, continuous treatment is required at the leg \\
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beginning of'the spawning period in the spring and at the end of the spawning period. in the fall.
In order for chlorination to be effective as a biocide for clam control chlorination is necessary over an extended period of time.
The frequency and duration of the chlorination periods described in both the Browns Ferry Final Environmental Statement and, the existing technical specifications are incorrect.
Since an assessment of continuous chlorination indicates that 0.05 mg/1 of residual chlorine is more appropriate as a limit than 0.2 mg/1, the specifica-tion has been changed. accordingly.
Also, since the assessment has been made on the basis of continuous chlorination, discussions of chlorination period. durations in the technical specifications are unnecessary and have
,been 'deleted.
Several changes were made to better define the procedure to be used.
- and, to incorporate a study to demonstrate that a weekly sampling interval is adequate.
Other changes were made for editorial clarity.
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