ML19312C476

App B to Nonradiological Tech Specs

ML19312C476
Person / Time
Site:	Oconee
Issue date:	02/06/1973
From:	DUKE POWER CO.
To:
References
NUDOCS 7912160005
Download: ML19312C476 (18)

Text

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APPENDIX B E

OPERATING LICENSE NO. DPR-38 TECHNICAL SPECIFICATIONS FOR THE OCONEE NUCLEAR STATION UNIT 1 DUKE POWER COMPANY DOCKET NO. 50-269 Date of Issuance: FEB 6 3 73 39121600 p

TECHNICAL SPECIFICATIONS i

Table of Contents Page 1.0 Non-Radiological Environmental Specifications........ 1 1.1 Station Cooling Water Systems Thermal Limits......... 4 1.2 Chemical Discharge Limits............................ 5 1.3 General Aquatic Surveillance......................... 7 1.3.1 Water Quality................................. 8 1.3.2 Fish - Population Dynamics and Reproduction... 11 .

1.3.3 Periphyton.................................... 12 1.3.4 Phytoplankton - Zooplankton Receiving Water Study....................................... 13 1.3.5 Benthos....................................... 14 1.4 Fish Impingement on Intake Screens and Entrainment of Fish Eggs and Larvae............................ 15 1.5 Phytoplankton - Zooplankton Entrainment Mortality Study.............................................. 16 1.6 Plume Mapping for Temperature and Dissolved Oxygen... 17 1.7 Gas Bubble Disease Study............................. 18 1

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1.0 NON-RADIOLOGICAL ENVIRNMENTAL SPECIFICATIONS Objective: To establish operational limits, programs for environ-mental surveillance and special studies, and reporting requirements.

Applicability: Applies to the thermal and chemical effects of the Oconee '

Nuclear Station.

j Specification: A. The station operating limits described in this section shall be ef fective on the day the first unit of Oconee Nuclear Station is licensed to operate and shall continue in effect over the plant's operating lifetime. The surveillance programs and special studies shall continue in effect for the period of i

time necessary to determine the environmental impact of the station.

B. The data obtained from the programs defined in this

{ s' action shall be analyzed and conpared with the analytical predictions and preoperational data. A report of the results of these programs shall be forwarded to the Directorate of Licensing (DOL) at the end of each six month period or fraction thereof, terminating on June 30 and December 31. Such reports are due within 60 days after the end of each reporting period. A report summarizing the results of the overall environmental surveillance and study programs shall be submitted 60 days following the third anniversary of the date the last unit of the Oconee Nuclear Station is licensed to operate.

I C. If on the basis of such semi-annual and summary reporta it is established that no major adverse environmental impact has resulted or is likely to result from continued operation of the Oconee Nuclear Station and that the degree of impact that has occurred has stabilized and is not likely to change,

, then the environmental surveillance and study programs ray be modified or terminated. Otherwise, they shall continue until a semi-annual report does establish that no change in impact has resulted or is likely to

' result. If on the basis of any semi-annual report or l

the summary report it is established that the results of the monitoring program are .nconclusive, either in whole or in part, the licensee shall propose l

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~2-results and implementnsuch approved by DOL e changes conclusive they are nation of any sp. No substantial changes or termi DOL approval. -

es B as_e,s,: ecified program shall be made without The specific mantal s requirements anda det il section.pecifications are outlined by subject in this i

in Table 1.0-1.The overall environmental mo ng program is summarized e

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3 Table 1.0-1 SnetAAY CT TXE NON-RADIOLOGICAL E.WIRONMENTAL MONITORING FR00 RAM FOR OCONEE NUCL S A M P L I N G S T A T I O N S (Fig 1.3-1, Fig 1.3-2) 7g LAKE KEOWEE LAKE EARTk' ELL II Intake Discharge Discharge 500 501 502 503 504 505 506 507 Structure Structure cove 601 602 603 604 605 UATER Ot'ALITY Temperature Dissolved oxygen (l) M M M M M M M M M M M M M M Light Fenetration M M M M M M M M M M M M M M pH M M M M M M M M M M M M M Manganese H M M M M M M M M M M M M M Total Iron M M M h M M M M M M M M M M hrbidity M M M M M M M M M M M M M M BOD M

M M M M M M M M M M M M M M M M M Alkalinity M M M M M M M M M M M M M NH3 Nitrogen M M M M M M M M NO3 Nitrogen M M M M M M M M Ortho - P M M M M M M M M Total - P M M M M M M M M Silica Conductivity M M M M M M M M M M M M M M M M PLLHE STUDTES Co'tinuous Temp. C C C Mapping (2) Q Q Q Q Q PIANETON(3)

Entrainment (Section 1.5)

Surveillance EM N m m PERIPNYTON N N 3 m aENTuoS q q q q q DISSOLVED CASES q q V WW W W W PTSNES (Section 1.3.1)

Nets Electroffshing Rotenone (1) See Section 1.3.1 (2) Approximately 25 additional stations will be sampled.

(3) Two additional locations will be sampled in the discharge plume.

Key M - Monthly (Minimum of 10 times per year with a period not to exceed 45 daye between samples):

C - Continuously; Q - Quarterly; BM - Bi-monthly (6 times per year); W - Winter period monthly (Nov.-April) e

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_4 1.1 STATION COOLING WATER SYSTEMS THERMAL LIMITS _

Obiective: To specify thermal limiting conditions for the operation of the station cooling water systems.

Applicability: Applies to tne maximum temperature and rate of change of temperature of the cooling water discharged from the station condenser cooling and service water systems.

Specification: A. The cooling water effluent temperature at the discharge shall not exceed 100*F for a time period in excess of two hours. In the event of the once-in-20 years combi-nation of extreme natural conditions the station's generating capacity shall be limited as necessary to keep the discharge temperature from exceeding 100*F unless there is a serious need for the lost power. A serious need for lost power is defined here as a condition which would result in voltage reductions or load shedding (except contracted interruptable loads). Under these circumstancea, the licensee shall notify AEC/ DOL immediately by telephone and the discharge temperature shall not be allowed to exceed 103'F.

B. Temperature rise from the condenser intake to the discharge shall not exceed 28'F. Further, the temperature rise should not exceed 22*F when the inlet temperature is greater than 68'F.

C. Normal station operations shall be programmed so that effluent temperatures shall not decrease more than 6'F per hour during the winter and 10*F per hour during the spring, summer, and fall.

Monitoring:

Station cooling water intake and discharge temperature and cooling water flow rate shall be measured continually at intervals of less than 1 minute. Summaries to include maximum, minimum, and average values shall be printed out hourly; and during periods when the measuring equipment is defective or under repair, representative data readings shall be logged hourly.

Basis: The limits on plan: discharge temperature and rate of temperature a change 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 mini-I mize the resulting transient thermal change.

Specification C recognizes that a slower rate of plant unloading during the cooler months is desirable due to the fact that some aquatic organisms require more time to adapt during those periods.

Whenever feasible, refueling and scheduled maintenance shall be performed during periods when the ambient lake surface temperatures

.are above 60*F.

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1 Table 1.21. Chemial wastes from Ownee Nuclear Station Resultmg con;4ntration in Pounds per year (3 units) Kenwee River water ippres (from DO Average 8 Maximum posuble#

Rextur coolant 2.4 x 10~5' 8.8 x 10" 60,000 (startup)

Bonc acid d d Lithium hydroxide 180 e e Hydrazine 30')

Steam generator feedwater e 1,800-13.000 e Ilydrazine Regeneration of deborating demineralizers 4,100 / /

Sodium hydroxide Regeneration of water treatment demineraluers 4.4#

440,000 0.12' 8 Sodium hydroude 8 2.5 150,500 0.068 Sulfunc acid Laundry and cleaning detergents O.17 10.000 0.0046' liloor cleanmg (liquid) O.08 l' 4.760 0.0022' Laundry (solid) 3

' Total per year dduted Ly average tadrace flow of 1100 cfs(9.823 x 10 cm / year).

6Total per year dduted by minimum tadrace flow of 30 cfs.

'53 lb/ year from evaporator overheadt

1. Most will probably be removed by the demaneralucrs and evaporators.

'Normally, hydrazine is reacted chemically and is not discharged.

. I ost M of this material wdl be sent to the waste drumming fuihty as evaporator bottoms.

' Sodium released; Keowee River normal concentration is 1.2 2.8 ppm (G. A. Bdhngsley, " Chemical Character of Surfae Waters of South Carohna, 1945-1955." Bulle.in No.163 SouthCarolina Development Board.1956).

" Sulfate released; Keuwee River normal conc. is 0.7-2.5 ppm (G. A. Billingsley, " Chemical Character of Surface Waters of South Carolina, 1945-1955." Bulletin No.163, South Carohna Development Board,1956).

' Processing of these wastes through the sanitary waste system may significantly reduce this value.

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1.3 CENERAL AQUATIC SURVEILLANCE Obiective: To determine the effects of Oconee Nuclear Station's oper-ation on the aquatic ecosystem of Lake Keowee and the area of Lake Hartwell influenced by the thermal and chemical discharges.

Specification: Surveillance programs shall be conducted to detect and quantify Oconee's effects on water quality, fish, periphyton, plankton, and benthos.

Bases: Requirements and details of the aquatic surveillance specifications are described in Sections 1.3.1 through 1.3.5.

A tabular summary of the aquatic surveillance program items is included in Table 1.0-1.

1.3.1 WATER QUALITY Specification: A. Synoptic water quality surveys at nine (9) sampling stations on Lake Keowne, four (4) stations on Lake Hartwell, and a sta: 1<.-n on the Keowee River between the lakes shall be cc:4 ducted. Sampling locations are shown on Fig.1.3-1 and Fig.1.3-2, and required sampling parameters are listed in Table 1,0-1.

Temperature and dissolved oxygr.n measurements shall be made at ten (10) foot intervals from a one (1) foot depth to the bottom for all lake samples. BOD measurements on Lake Keowee shall be taken at one (1) foot, ten (10) feet, and bottom depths. BOD measurements on Lake Hartwell shall be made on samples which are a composite of water from one (1) foot depth, mid-depth, and bottom depths. All other specified parameters shall be measured at a minimum of three (3) depths for each lake sampling station. At sampling station 605 (Fig.1.3-2), the Keowee River shall be sampled from mid-depth.

Dissolved oxygen will also be measured weekly from May thrctgh November at three locations: (1) the Oconee discharge, (2) the lake surface (one [1] foot deep) at the Keowee intake structure, and (3) the Keovee tailrace during hydroelectric plant operation.

B. Water temperature recording stations shall be established at stations 502, 503, and 504.

Temperature shall be monitored in a multi-point vertical profile, accurate to l' F. Sensors shall be placed at a depth of one (1) foot below the surface, on the bottom, and at a minimum of six (6) intervals to describe the temperature profile.

A fourth temperature recording station shall be established to monitor the waters discharged from Lake )

l Keowee through the Keowee Hydro Plant. <

Bases: , Water quality measurements will be used to: (1) establish

! base line data, (2) determine effects from Oconee Nuclear l

Station on the water quality and, (3) provide supporting data for the benthos, plankton, periphyton and fish l sampling programs. l l

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-- ' LAKE KE0 WEE NON-RADIOLOGICAL ,

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MONITORING STATIONS

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f r, HARTWELL NON-RADIOLOGICAL l

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( mt LOCATIONS OCONEE NUCLEAR STATION FIGURE 1,3-2

1.3.2 FISH - POPULATION DYNAMICS AND REPRODUCTION Specification: A. Comparisons shall be made of the data obtained by systematic sampling of fishes using nets, electro-l fishing, and rotenone at suitable locations both within and essentially out of the influence of the effluent.

Significant changes in the composition, abundance, and growth of the major fishes in various areas of Lake Keowee shall be identified and the factors which cause change defined, especially those relating to the effluent from Oconee Nuclear Station.

B. The reproduction of four (4) indicator species (large-mouth bass, black crappie, yellow perch, and bluegill) representative of the fish species in Lake Keowee shall be charactarized by determiniag the environmental requirements for reproduction.

Pertinent data collected from other studies shall be utilized and results and observations obtained for Lake Keowee shall be compared to those previously published.

Spawning data for Lake Keowee shall be collected by direct observation and the use of ichthyoplankton trawls.

The sampling procedures, periods, and intensity related to specifications A and B above will be based on those established by the Southeast Reservoir Investigations team of The Bureau of Sport Fisheries and Wildlife, Department of the Interior.

B ases : Changes, such as in the composition of the fish population from that of a gane fish population to a rough fish population or a reduction in either the abundance or

, growth of the game fish species would be undesirable.

! Thus, one of the primary objectives of the biological studies at Lake Keowee shall be to determine the effects of the Oconee effluent upon the composition, abundance, and growth of the major fish species.

The natural existence of a fish species in a body of water is dependent upon successful reproduction. By determining the environmental requirements for successful reproduction in Lake Keowee by the four (4) characteristic fish species, and the ef fects of the Oconee effluent, it can be ascertained whether or not the effluent affects fish reproduction.

1.3.3 PERIPHYTON Sg(cification: Duplicate artificial substrates (plexiglass slides) shall be held in racks and submerged at a depth of five feet at three general locations in the lake (stations 502, 504, and a station in the discharge area) that may be influ-enced by the plant discharge, and at two control locations in the lake (stations 501 and 506) that shall be essenti-ally out of the influence of the plant discharge. Dry and ach-free weights of each sample shall be determined so that comparisons can be made of the relative productivity values between the different stations.

Bases: Communities of microorganisms growing on submerged surfaces are influenced by water quality and are useful in assessing the effects of discharges on lakes. Included in the periphyton are the zoogleal and filamentous bacteria, attached protozoa, rotifers and algae, and also the free-living microorganisms found swimming, creeping or lodged among the attached forms. Dry and ash-free weights of each sample, which represents relative productivity values shall be determined according to the procedures described in Standard Methods far the Examination jyf Water and Waste-Water.

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1.3.4 PHYTOPLANKTON - ZOOPLANKTON RECEIVING WATER STUDY Obiective:

- The species composition and numbers of organisms per unit volume obtained by sampling at stations affected by the discharge plume will be compared to similar data collected at control stations.

Specification: Bimonthly sampling (6 times /yr.) shall be done at stations 500, 503, 505, 506, intake, and at two points along the centerline of the Keowee River arm of Lake Keowee. The geo-graphical location of these latter two stations shall be determined at each sampling period and shall represent the points at which the plume surface temperature is 0.9 and 0.5 of the temperature excess of the discharge over ambient surface tem-perature. For the purpose of this study, " ambient surface temperature" shall be defined as the surface temperature at station 500 as measured on the day of the plankton sampling.

Both whole water samples and samplee concentrated using a plankton net will be collected. The sampling at stations affected by the discharge shall consist @f samples taken at water depths, both affected and not affected by the plume.

At the control stations, samples will also be taken at these corresponding depths.

Basis: Stations 500 and 506 will serve as controls. Stations 503, 505, discharge stations as stated, and at the intake serve to detect plant operation effects. The discharge plume stations and depths sampled will be selected to determine (1) effects due to condenser passage on the species composition and concen-tration of organisms in the area affected by the plume, and (2) possible recovery and reincorporation effects at points along the discharge plume. Both determinations can be used to express the net system effects.

Sampling at depths affected by the plume and at depths below the plume is an attempt to detect any change in species composition or number of organisms at the greater depths that may result from the inability of condenser entrained organisms to maintain themselves in the plume. This selection of sampling depths in the plume and below the plume will be i based on all, or any combination, of the following methods:

l temperature, dissolved oxygen, chlorophyll "a", irradiance,

or transmissometry profiles.

1.3.5 BENTHOS Specification: The benthic macroinvertebrate populations of Lake Keowee and the Keowee River shall be sampled on a seasonal basis, four (4) times per year. Sampling stations shall be located on the lake side of the skimmer wall (502), in the vicinity of the discharge (discharge canal and 504), at control stations on Lake Keowee (501 and 506), and in the Keowee River below Keowee Dam (604 and 605). Deep water stations shall be sampled using a dredge, while river sta-tions shall be sampled using a suitable stream sampling technique. Non-quantitative littoral sampling (for example, sweep netting) shall be done along the shore nearest each of the stations listed above.

Benthic organisms collected shall be identified to the genus level where practicable. Diversity indices shall be calculated as well as data on the standing crop of benthic organisms, such as number per square meter and/or grams j per square meter.

Bases: Benthic organisms are valuable as indicators of water quality near the bottom of a lake or river. Their rela-tive immobility and several-month life spans are qualities which help make them " continuous monitors" whose survival may be limited by extreme conditions even when average conditions are favorable. They cannot avoid adverse conditions and are slow to repopulate an area, so that detrimental effects are not easily erased. Benthic organisms may also be an important source of food for fish.

Inasmuch as the distribution and abundance of benthic organisms are greatly dependent upon the bottom type available to them, the bottom type at each sampling station will be classified and reported.

The benthic samples taken by the techniques proposed above should be representative of both deep and shallow areas of Lake Keowee and of the several habitats presented by the Keowee River below the dam.

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9 1.4 FISH IMPINGEMENT ON INTAKE SCREENS AND ENTRAII1 MENT OF FISH EGGS AND LARVAE Obiective: To detect and quantify (1) fish impingement upon the intake screens and (2) entrainment of fish eggs and larvae in the cooling water system.

Specification: A. Fish Empinged upon the intake screens of Oconee Nuclear Station shall be identified to species when possible, counted, and the length estimated once each week by visual inspection from the intake structure. A detailed analysis of the fish impinged upon the intake screens shall be conducted by species, size, and quantity each time a set of screens is pulled. An underwater visual inspection shall be carried out quarterly to determine the species and quantity of fish impinged upon the intake screens. The data collected from these studies shall be recorded in tabular form.

Any significant mortalities of fish and in all cases, any mortalities that involve 100 or more fish, shall be reported to the responsible representatives of the South Carolina Wildlife and Marine Resources Department and 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 /> of its discovery. A written report concerning any significant fish mortalities shall be submitted to AEC/ DOL within 10 days.

B. The entrainment of fish eggs and larvae in the cooling water system shal' he monitored biweekly (every other week) during the major spawning period of April through July and an estimate made of the total number of fish eggs and larvae entrained and their survival.

C. If the quantity or type of fish, or their eggs or larvae, is determined to be of significance or to have a signifi-cant detrimental impact on the propagation of fish of recreational importance, then plans for cc .ective action will be developed.

Basis: The specified study will determine the mortality of fish impinged upon the intake screens and the numbers of fish eggs and larvae entrained in the cooling water system re- (

sulting from the operation of Oconee Nuclear Station.

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4 1.5 PHYTOPTANKTON - ZOOPLANKTON ENTRAINMENT MORTALITY STUDY Objective: To provide information on the types and quantities of phyto-plankton and zooplankton passed through the condenser cooling water system and to determine the effect of passage on survival.

Specification: At least 6 times per year water samples will be collected by either plankton nets or pumps at the condenser cooling water systems intake and at the heated water discharge before it enters the receiving water. Samples will be analyzed for types, quantities and survival of the various planktonic groups. Sampling will be such to encompass the range of temperature rises across the condenser (e.g. ,16*-28'F).

Bases: Comparison of types, quantities and viability of organisms at the intake and discharge will p: ovide an indication of the effect of condenser passage on the planktonic organisms.

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1.6 PLUME MAPPING FOR TEMPERATURE AND DISSOLVED OXYGEN Objective: To provide temperature and dissolved oxygen data for defining the discharge plum and for checking the accuracy of predictions of plume characteristics.

Specification: On a seasonal basis (at least 4 times per year) sracial sampling studies a5t all be made to identify and character-ize the cooling ; ker discharee plume with respect to dissolved oxygen and temperatuu Data shall be collected from a minimum of 30 sampling poi.its, following a sampling pattern designed to achieve coverage of the plume.

Three of the surveys shall be conducted during periods when the following conditions are expected:

1) Maximum condenser cooling water discharge temperature

2) Maximum acreage of discharge plume

3) Minimum er 2 denser cooling water dissolved oxygen concentration.

Bases: The mapping program will define the temperature and dis-solved oxygen gradients in the plume, especially in the region near the discharge where momentum and mixing are tha prevalent processes influencing the plume's horizontal and vertical dimensions.

This mapping program will effectively complement the surveillance program defined in Section 1.3.

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T 1.7 GAS BUBBLE DISEASE STUDY Objectives: To determine the incidence and severity of gas-bubble disease among fishes in the heated effluent of Oconee Nuclear Station and the associated saturation values of the gases oxygen and nitrogen dissolved in Lake Keowee waters.

Specification: A. The fish collected as a part of the population dyna-mics study (1.3.2) shall be examined for symptoms of gas-bubble disease. Those fish which exhibit symptoms of gas-bubble disease shall be identified, weighed, and measured; this data plus the date and location of capture will be tabulated.

B. Determination of the percent saturation values of the gases oxygen and nitrogen dissolved in Lake Keowee waters shall be made at stations 502, 504, 505, intake structure, discharge structure, ::r.d discharge cove at depths of 1, 5,10 and 20 feet. The study shall be performed monthly during the winter period, November to April, startir.g in November 1973.

Bases: The winter time occurrence of gas-bubble disease asso-ciated with the operation of a steam electric station has been noted. Thus, it is necessary to determine whether or not gas-bubble disease does occur and if so, then what the incidence rate and severity is. The findings of other researchers on this subject will be reviewed and incor-porated into this study.

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