ML19317F134

Draft ETS App B for Facilities

ML19317F134
Person / Time
Site:	Oconee
Issue date:	11/21/1972
From:	DUKE POWER CO.
To:
Shared Package
ML19317F133	List: ML19317F134
References
NUDOCS 8001080857
Download: ML19317F134 (17)

Text

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APPENDIX B i

1 Lo OPERATING LICENSE NO.

S TECHNICAL SPECIFICATIONS _

l FOR THE OCONEE NUCLEAR STATION I DUKE POWER COMPANY T-DO3ET NOS. 50-269, 50-270 AND 50-287 i

h Date: , 1972 i

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l TECHNICAL SPECIFICATIONS Table of Contents Page 1.0-1 1.0 Introduction ............................................

1.1-1

1. l' Plant Cooling Water Systems Thermal Limits ..............

1.2 Control of Lake Keowee Water Temperature in the Vicinity of Keowee Dam ................................

1.2-1 Plant Chemical Discharge Limits ......................... 1.3-1 1.3 1.4-1 1.4 Plant Cooling Water Systems Fish Entrapment Limits ......

3 1.5 Monitoring of the Effects of the Condenser Cooling Water System on Plankton and Larval Organisms ......... 1.5-1 i 1.6-1 1.6 Monitoring Lake Water Quality ...........................

1.7-1 1.7 Surveillance, Study, and Evaluation Programs ............

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1.0 INTRODUCTION

The programs and studies described in this section shall commence on the day the first unit of Oconee Nuclear Station is licensed l to operate and shall continue in effect for the period of time necessary to determine the environmental impact of the plant.

.The limits described in this section shall remain in effect over the plant's operating lifetime.

The data obtained from the programs defined in this section shall be analyzed as they are collected and shall be compared A with report of analytical predictions and with preoperational data.

the results of this evaluation shall be forwarded to the Directorate of Licensing (DL) at the end of each six month period Such g or fraction thereof terminating on July 1, and January 1.

reports are due within 60 days after the end of each reporting period. A final report summarizing the results of the program j

shall be submitted sixty (60) days following the fif th anniversary of the date the If onlast the unit basisofofthe suchOconee Nuclear semiannual and Station is licensed final reports to operate.

it is established that no major adverse environmental impact has resulted or is likely to result from continued operation of the Oconce Nuclear Station and that the degree of impact that has occurred has stabilized and is not likely to change then the program shall be terminated. Otherwise it shall continue until a semiannual report does establish that no change in impact has resulted or is likely to result.

If on the basis of any semiannual report or the final report it is established that the results of the the monitoring licensee program are shall propose inconclusive, either whole or in part, reasonable changes to the program designed to yield conclusive results and implemert such changes when they are approved by DL.

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l.1 PLANT COOLING WATER SYSTEMS TilERMAL LIMITS Applicability: Applies to the maximum temperature and rate of change of temperature of the plant condenser cooling water and service water systems.

Objective: To specify thermal limiting conditions for the operation of the plant cooling water systems.

Specification: A. The cooling water effluent temgerature measured at the discharge shall not exceed 100 F for a time period in excess of two hours. Temperature rise from the condens-er intake to the discharge shall be limited to 30 F.

B. Normal plant operations shall be programmed so that effluent temperatures shall not decrease more than 5 F per hour during the winter and 10 F per hour 3 during the spring and fall.

C. Plant cooling water intake and discharge temperature, and flow shall be continuously recorded. During such periods when the recorders are defective or under repair data readings shall be logged every hour.

Basis: The specifications limit plant discharge temperature and the rate of temperature change. These limits permit sufficient operational flexibility to allow for the starting or shutdown of a circulation water pump during plant loading and unloading while at the same time requiring that procedures incorporate the programming of load changes to minimize the resulting transient thermal change.

Specification B requires a slower rate of plant unloading during the cooler months in recognition of the fact that some aquatic organisms require more time to adapt during those periods. Although the 5 F per hour decrease during winter may not allow the more heat-sensitive species time enough to acclimate to the colder conditions, this rate of temperature change could permit time for the more th heat tolerant species to acclimate.

Whenever feasible, refueling and scheduled maintenance shall be performed between the months of April and October inclusive.

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1.2 CONTROL OF LAKE KEOWEE WATER TEMPERATURE AND DISSOLVED OXYGEN IN THE VICINITY OF KE0 WEE DAM Applicability: Applies to the water temperature and dissolved oxygen in the vicinity of Keowee Dam during plant operation.

Objective: To control water temperature and dissolved oxygen with-in prescribed limits in order to minimize adverse effect on aquatic organisne outside the discharge area.

Specification: A. Recording devices will be used to continuously monitor the temperature of the water in the vicinity of Keowee Dam, and at sampling station 605 as shown in Fig. 1.2-2.

B. Plant operation will be controlled to prevent the thermal plume issuing frop the plant exceeding 90*F at sampling station 504 (see Fig.1.2-1) .

C. Recording devices shall be located at Stations 504 and 605 for the purpose of determining the concen-tration of dissolved oxygen. Station 504 will be designated as the control station.

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D. Plant operation shall be controlled to prevent

' the dissolved oxygen level from falling below 1

3 mg/l at a depth of one foot as measured at  !

Station 504.

Basis: The control of water temperatures outside the immediate  !

I discharge area will be accomplished in the following i 2

manner:

Two sets of temperature detecting devices will be used; one will be located directly in the discharge canal and l the other at the Keowee Dam int'ake (station 504). The average temperature of the heated water layer at each of these stations will be recorded. Simultaneously water temperatures will be recorded at the intake of the circulating water system. '

The thermal patterns created by the operation of the plant will be determined thro agh the use of infrared image ry . From the infrared imagery data the relation-ship of the existing temperature sensors to the actual thermal plume can be determined. If it is determined that the sensor locations are outside the warmest part of the main plume, the sensors will be relocated accordingly.

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8 As the plant power level is increased, a correlation  !

h between the temperature indicated by these two sets of sensors and the intake temperature will be developed.

Other environmental factors, such an ambient air temr I perature, wind speed, relative humidity, etc. , will <

be considered to enable plant personnel to determine

' the relationship, if any, between these factors and 4

j water temperature. Through these observations, limita-tions can be placed on plant operation based upon the temperature of the water entering the plant in order to control the temperature of the water affecting the l

temperature sensors located in the thermal plume. l l

l The specification for dissolved oxygen is designed to protect aquatic organisms in the area beyond the I

immediate discharge.

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r 1.3 PLANT C11EMICAL DISCHARGE LIMITS Applicability: Applies to release of chemical effluents from the plant.

Objective: To insure that all chemical releases from the plant are controlled and diluted so as to be non-toxic to aquatic organisms in Hartwell Reservoir.

Specification: A. All plant chemical discharges shall be released during operation of the Keowee hydroelectric station to assure maximum dilution.

Basis: Requiring that plant chemical discharges be released during periods of maximum dilution will assure that concentrations of chemical effluents are maintained

. at low values.

Requiring that the effluent not contain chemicals in toxic concentrations assures that aquatic organisms are protected.

It is not expected that chlorine will be used to maintain

- condenser cleanliness, however should it become necessary to use chlorine, precluding the chlorine concentration at the discharge from exceeding 0.1 mg/ liter will avoid any effect on aquatic organisms.

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1.4~ PLANT COOLING WATER SYSTEMS FISH ENTRAPMENT LIMITS Applicability: Applies to the entrapment of fin fish in the plant intake structure.

Objective: To establish a requirement for the monitoring of fish entrapment and to specify corrective action to reduce the environmental impact of this aspect of plant operation to its lowest practicable limit.

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Specification: A. Fin fish in the plant intake structure of the Ogonee Station shall be estimated by type, size and quantity, and the data shall be recorded weekly in tabular form. A detailed analysis of each week's sample shall be conducted by species,

' . size and quantity during ' he first year of operation. These data s',all be transmitted to DL i;

semiannually. Significant mortalities of fish shall be reported to Region II, Directorate of Regulatory Operations within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Data concerning significant fish mortalities and the cause shall be included in a more detailed report submitted to DL within 10 days.

B. If the quantity or type of fin fish, is determined to be of significance or to have a significant detrimental impact on the propagaticn of fin fish

- of recreational importance, the following steps will be taken:

1. The appropriate State and Federal agencies having responsibility for fisheries will be  ;

consulted.

2. Plans for corrective action will be developed.

l C. If the quantity of entrapped fin fish is unexpectedly l or unusually large, immediate action will be l initiated to reduce the entrapment rate pending l a detailed review. )

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1.5 MONI10 RING OF THE EFFECTS OF THE CONDENSER COOLING WATER SYSTEM ON PLANKTON AND LARVAL ORGANISMS I

Applicability: Applies to plankton and larval organisms passing through the condenser-cooling water system.

Objective: To determine the thermal and mechanical effects of the condenser cooling water system on 1) the more dominant members of the phytoplankton and zooplankton communities and 2) the fish eggs and larvae that are present in the intake waters in all months of the year.

Specification: Samples shall be taken at the intake and discharge structures. All sampling shall.be quantitative using

_ standard techniques for sampling the planktonic component.

Samples for fish eggs and larvae shall be taken at biweekly intervals during the periods 15 March to 15 October and at monthly intervals throughout the year.

Samples from the discharge water shall be compared with those from the intake to assess thermal and mechanical damage. Samples from the intake area shall be maintained at ambient temperature for a minimum of

' 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and the survival of the major components determined. Plankton samples from discharged coolant waters shall be returned to ambient temperature at a rate approximating that had the sample remained in Lake Keowee. Survival of the major components after

- a minimum of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> shall be compared with survival in intake samples.

Basis: The specified study will determine mortality of f selected planktonic organisms common to Lake Keowee l that have been subjected to temperature regimes in the l water passing through the Oconee condenser cooling  ;

system. The study will emphasize the analysis of (

samples taken in the field using the laboratory l techniques available for studying delayed mortality. l l

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1.6 MONITORING LAKE WATER TEMPERATURE Applicability: Applies to the lake waters in the vicinity of the Oconee Power Station.

Objective: To provide lake temperature data during' plant operation.

Specification: .In addition to the temperature and dissolved oxygen monitoring carried out in 1.2, the applicant shall monitor, continuously, temperature at stations 502, 503, and 504 as shown in Figure 1.2-1 and station 605 as shown in Figure 1.2-2. Temperature shall be monitored using multipoint vertical temperature monitors accurate to l'F. These should be placed I to include depths of 1 f t. below the surface, and on the bottom and depths at 5 ft. intervals from surface to bottom. Tabular displays shall be prepared which give: (1) the daily average, (2) the weekly average, and (3) the monthly average values for each station and each depth. This operational data shall be submitted to the Regulatory Staff on a monthly basis.

Basis: Graphs of the data are made from the average daily temperatures at each station to indicate warming or cooling trends taking place as a result of plant operation. Maintaining the location of the sensors at their present locations will also allow comparison of water temperatures taken before and after plant operation, although the natural variability of water temperature at a given location is such that precise comparison, will be of little value, only trend data.

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1.7 SURVEILLANCE, STUDY, AND EVALUATION PROGRAMS Applicability: Applies to the surveillance, study, and evaluation programs to be carried out during the monitoring operational period.

Objective: To determine the effects of plant operation on the aquatic ecosystem of Lake Keowee and the area of Lake Hartwell influenced by the thermal and chemical discharges.

Specification: The program as outlined below is the basic biological surveillance program for the Oconee Nuclear Station.

Parameter Sampling Plan Frequency of Sampling

1. Benthos Sampling stations will be Seasonally, 4 times per located in front of the intake year and the discharge (Stations

! 502, discharge canal and 504 g of Figure 1.2-1) and in the Keowee River below Keowee Dam (Stations 604, and 605 of Figure 1.2-2).

2. Plankton & Periphyton Sampling stations will be Bimonthly, 6 times per located at the intake and year

a. Zooplankton the discharge structures,

b. Phytoplankton Stations 504 and 502 as

c. Periphyton shown in Figure 1.2-1.

3. Fish a. Identify the spawning a. During spawning areas on Lake Keowce with season Laphasis on the Little River arm of Lake Keowee in the vicinity of the intake.

b. Determine species b. Quarterly composition, size, class, and age composition of fish in Lake Keowee with emphasis on the intake and discharge areas.

4. Synoptic water Sample those water quality Monthly quality parameters (listed in Table 1.7-1) to establish base-line water quality data to provide supporting data for the benthos, plankton, periphyton, and fish sampling programs.

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Basis: To determine the ecological significance of condenser effluent, the observed effects must be related to the population density dynamics, and regeneration time of the aquatic organisms present in the affected areas.

The information needed to be able to assess operational effects can be collected. The Duke Power Company should start immediately to formulate a comprehensive program in order to collect enough information so that impacts

.can be quantitatively assessed in subsequent reviews.

Specific sampling sites should be established after the initial data collection has identified the areas of potential impact. Included in the sampling design should be at least one station in the immediate vicinity of each intake structure and one in the area at the end of the discharge canal.

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l, li SY50?1.2 WATER QUALITY PARAMETERS SAMPLED ,

LAll'. XEOWEE AND LAKE HARTWELL ,,

Lakes

• Keowee Hartwell h

1.. Temperature X X ,

2.- Dissolved Oxygen X X

3. Secchi Disc X X

4. Hg- X X  !

5. Manganese X X

6. Total Iron X X

,- 7. Turbidity X X l.

8. Biochemical Oxygen Demand X X j ,'

t 9. Total Alkalinity X [,

X  ;

10. Am onia Xitrogen

11. Xitrate Xitrogen X g X J

12. Ortho-Phosphate 13'. Total Phosphate X

14. Silica X ,

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15. Conductivity X }

I, i Temperature'and dissolved oxygen measurements are made at all stations on both Lakes Hartwell and Keovee at ten (10) foot intervals from a one (1) foot depth to the'hottom depth; except station #6,05 where measurements [:

are made at mid depch onl'A(Figures 1.2-1 and 1.2-2) l 11 'Secchi Disc is measured at all stations except station #605.  !;

iii. 303 measurements on Lake Keowee are made at a minimum of three (3) randomly

. selected stations each survey. Separate samples are taken at one (1) f oo t ,

ten.(10) foot and bottom depths at each' station. [

iv 303 measurements on Lake Eartwell are made.at all stations'from a composite of water from one foot, mid-depth, and bottom depths; except station #605 which is from mid-depth only. <

v All other parameters-are measured at a minimum of three (3) depths at ,

each station; except station #605 which is measured at mid-depth only.

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