ML073550629

Tech Spec Pages for Amendments 359, 361 & 360, Regarding Removal of the Gaseous Radioactive Monitor from the Technical Specifications

ML073550629
Person / Time
Site:	Oconee
Issue date:	12/19/2007
From:	NRC/NRR/ADRO/DORL/LPLII-1
To:
Olshan L N, NRR/DORL, 415-1419
Shared Package
ML073241009	List: ML073241015 ML073550629
References
TAC MD4041, TAC MD4042, TAC MD4043
Download: ML073550629 (8)

Text

-3-Part 70; Is subject to all applicable provisions of the Act and to the rules, regulations, and orders of the Comrrission now or hereafter in effect; and is subject to the additional conditions specified or Incorporated below.A. Maximum Power Level The licensee is authorized to operate the facility at steady state reactor core power levels not in excess of 2568 megawatts thermal.B. Technlcai Specf~itions The Technical Sp'"Mcations contained In Appendix A, as revised through Amendment No. 359 are hereby Incorporated in the license. The licensee shall operate the facility in accordance with the Technical Specifications.

C. This license Is subject to the following antitrust conditions:

Applicant makes the commitments contained herein, recognizing that bulk power supply arrangements between neighboring entities normally tend to serve the public Interest In addition, where there are net benefits to all participants, such arrangements also serve the best Interests of each of the participants.

Among the benefits of such transactions are Increased electric system reliability, a reduction In the cost of electric power, and minimization of the environmental effects of the production and sale of electricity.

Any particular bulk power supply transaction may afford greater benefits to one participant than to another. The benefits realized by a small system may be proportionately greater than those realized by a larger system. The relative benefits to be derived by the parties from a proposed transaction, however, should not be controlling upon a decision with respect to the desirability of participating In the transaction.

Accordingly, applicant will enter Into proposed bulk power transactions of the types hereinafter described which, on balance. provide net benefids to applicant There are net benefits In a transaction If applicant recovers the cost of the transaction (as defined In ¶1 (d) hereof) and there Is no demonstrable net detriment to applicant arising from that transaction.

S1. As used herein: (a) "Bulk Power" means electric power and any attendant energy, supplied or made available at transrmission or sub-transmission voltage by one electric system to another.(b) "Neighboring Entity" means a private or public corporation, a governmental agency or authority, a municiparity, a cooperative, or a lawful association of any of the foregoing owning or operating, or Renewed License No. DPR-38 Amendment No 3 5 9 Part 70; is subject to all applicable provisions of the Act and to the nrdes, regulations, and orders of the Commission now or hereafter in effect; and Is subject to the additional conditions specified or Incorporated below: A. Maximum Power Level The licensee is authorized to operate the facility at steady state reactor core power levels not in excess of 2568 megawatts thermal.B. Technical Specifications The Technical Specifications contained In Appendix A, as revised through Amendment No. 361 Ire hereby Incorporated In the license. The licensee shall operate the facility In accordance with the Technical Specifications.

C. This license Is subject to the following antitrust conditions:

Applicant makes the commitments contained herein, recognizing that bulk power supply arrangements between neighboring entities normally e to serve the public Interest.

In addition, where there are net benefits to all participants, such arrangements also serve the best Interests of each of the participants.

Among the benefits of such transactions are Increased electric system reliability, a reduction in the cost of electric power, and minimization of the environmental effects of the production and sale of electricity.

Any particular bulk power supply transaction may afford greater benefits to one participant than to another. The benefits realized by a small system may be proportionately greater than those realized by a larger system. The relative benefits to be derived by the parties from a proposed transaction, however, should not be controlling upon a decision with respect to the desirability of participating In the transaction.-

Accordingly, applicant will enter Into proposed bulk power transactions of the types hereinafter described which, on balance, provide net benefits to applicant.

There are net benefits In a transaction if applicant recovers the cost of the transaction (as defined In ¶1(d) hereof) and there Is no demonstrable net deriment to applicant arising from that transaction:..

1. As used herein: (a) 'Bulk Power" means electric power and any attendant energy, supplied or made available at transmission or sub-transmission voltage by one electric system to another.(b) "Neighboring Entity" means a private or public corporation, a governmental agency or authority, a municipality, a cooperative, or a lawful association of any of the foregoing owning or operating, or Renewed Ucense No. DPR-47 Amendment No. 3 61 Part 70; is subject to all applicable provisions of the Act and to the rules, regulations, and orders of the Commission now or hereafter in effect; and is subject to the additional conditions specified or Incorporated below: A. Maximum Power Level The licensee Is authorized to operate the facility at steady state reactor core power levels not in excess of 2568 megawatts thermal.B. Technical Specifications The Technical Sr-citcations contained In Appendix A, as revised through Amendment No. .6 are hereby Incorporated in the license. The flicensee shall operate the faciiny in accordance with the Technical Specifications.

C. This license Is subject to the following anW-ust conditions:

Applicant makes the commitments contained herein, recognizing that bulk power supply arrangements betwedn neighboring entities normally tend to serve the public interest.

In addition, where there are net benefits to all participants, such arrangements also serve the best Interests of each of the participants.

Among the benefits of such transactions are Increased electric system reliability, a reduction in the cost of electric power, and minimization of the environmental effects of the production and sale of electricity.

Any~particutar bulk power supply transaction may afford greater benefits to one participant than to another. The benefits realized by a small system may be proportionately greater than those realized by.a larger system. The relative benefits to be derived by the parties from a proposed transaction, however, should not be controlling upon a decision with respect to the desirability of participating In the transaction.

Accordingly, applicant will enter Into proposed bulk power transactions of the types hereinafter described which, on balance, provide net benefits to epplfcanL There are net benefits In a transaction If applicant recovers the cost of the transaction (as defined In ¶1(d) hereof) and there Is no demonstrable net detriment to applicant arising from that transaction.

1.1 As used herein: (a) "Bulk Power" means electric power and any attendant energy, supplied or made'available at transmission or subtransmisslon voltage by one electric system to another.(b) "Neighboring Entity" means a private or public corporation, a governmental agency or authority, a municipality, a cooperative, or a lawful associationof any of the foregoing owning or operating, or Renewed License No. DPR-55 Amendment No. 360 RCS Leakage Detection Instrumentation 3.4.15 3.4 REACTOR COOLANT SYSTEM (ROS)3.4.15 RCS Leakage Detection Instrumentation LCO 3.4.15 The following RCS leakage detection instrumentation shall be OPERABLE: a. One containment normal sump level indication; and b. One containment atmosphere particulate radioactivity monitor.I APPLICABILITY:

MODES 1,2,3, and 4.ACTIONS-NOTE E -------------------------

LCO 3.0.4 is not applicable.

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... .. ... .. .. .. .. .. .. ..-' ----. .... ... ..---------- -------- --------- ----------" --... .--.................--.........

CONDITION REQUIRED ACTION COMPLETION TIME A. Required containment A.1 ---NOTE -----------

sump level indication Not required until 12 inoperable, hours after establishment of steady state operation.

Perform SR 3.4.13.1.

Once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> AND A.2 Restore required 30 days containment sump level indication to OPERABLE status.(continued)

OCONEE UNITS 1,2, & 3 3.4.15-1 Amendment Nos. XXX, XXX &.XXX : .Amendmen t No.

360 I RCS Leakage Detection Instrumentation B 3.4.15 B 3.4 REACTOR COOLANT SYSTEM (RCS)B 3.4.15 RCS Leakage Detection Instrumentation BASES BACKGROUND ONS Design Criteria (Ref. 1) requires means for detecting RCS LEAKAGE.Leakage detection systems must have the capability to detect significant reactor coolant pressure boundary (RCPB) degradation as soon after occurrence as practical to minimize the potential for propagation to a gross failure. Thus, an early indication or warning signal is necessary to permit proper evaluation of all unidentified LEAKAGE.Industry practice has shown that water flow changes of 0.5 to 1.0 gpm can readily be detected in contained volumes by monitoring changes in water level, in flow rate, or in the operating frequency of a pump.The reactor coolant contains radioactivity that, when released to the containment, can be detected by radiation monitoring instrumentation.

Reactor coolant radioactivity levels will be low during initial reactor startup and for a few weeks thereafter until activated corrosion products have been formed and fission products appear from fuel element cladding contamination or cladding defects. An instrument sensitivity of 10"9 pCi/cc radioactivity for particulate monitoring is practical for this leakage detection system. A radioactivity detection system. is included for monitoring particulate activity because of its sensitivity and rapid response to RCS LEAKAGE.Air temperature and pressure monitoring methods may also be used to infer unidentified LEAKAGE to the containment.

Containment temperature and pressure fluctuate slightly during unit operation, but a rise above the normally indicated range of values may indicate RCS LEAKAGE into the containment.

The relevance of temperature and pressure measurements are affected by containment free volume and, for temperature, detector location.

Signals from these instruments can be valuable in recognizing rapid and sizable leakage to the containment.

Temperature and pressure monitors are not required by this LCO.OCONEE UNITS 1, 2, & 3 B 3.4.15-1 Amendment Nos. XXX, XXX, & XXX I Amendment Nos. 359, 361, 360 RCS Leakage Detection Instrumentation B 3.4.15 BASES (continued)

APPLICABLE SAFETY ANALYSES The need to evaluate the severity of an alarm or an indication is important to the operators, and the ability to compare and verify with indications from other systems is necessary.

The safety significance of RCS LEAKAGE varies widely depending on its source, rate, and duration.

Therefore, detecting and monitoring reactor coolant LEAKAGE into the containment area are necessary.

Separating the identified LEAKAGE from the unidentified LEAKAGE provides quantitative information to the operators, allowing them to take corrective action should a leak occur detrimental to the safety of the unit and the public.RCS leakage detection instrumentation satisfies Criterion 1 of 10 CFR 50.36 (Ref. 2).LCO One method of protecting against large RCS LEAKAGE derives from the ability of instruments to rapidly detect small leaks. This LCO requires instruments of diverse monitoring principles to be OPERABLE to provide a high degree of confidence that small leaks are detected in time to allow actions to place the unit in a safe condition when RCS LEAKAGE indicates possible RCPB degradation.

The LCO requirements are satisfied when instruments of diverse measurement means are OPERABLE.

Thus, the containment normal sump level indication, in combination with a particulate (RIA-47)radioactivity monitor, provides an acceptable minimum.APPLICABILITY Because of elevated RCS temperature and pressure in MODES 1, 2, 3, and 4, RCS leakage detection instrumentation is required to be OPERABLE.In MODE 5 or 6, the temperature is < 200EF and pressure is maintained low or at atmospheric pressure.

Since the temperatures and pressures are far lower than those for MODES 1, 2, 3, and 4, the likelihood of leakage and crack propagation is much smaller. Therefore, the requirements of this LCO are not applicable in MODES 5 and 6.OCONEE UNITS 1,2,&3 B 3.4.15-2 Amendment Nos. XXX, XXX, & XXX Amendment Nos. 359, 361, 360 RCS Leakage Detection Instrumentation B 3.4.15 BASES (continued)

ACTIONS The Actions are modified by a Note indicating that the provisions of LCO 3.0.4 do not apply. As a result, a MODE change is allowed when the normal sump level indication and required radiation monitor are inoperable.

This allowance is provided because other instrumentation is available to monitor RCS LEAKAGE.A.1 and A.2 With the required containment normal sump level indication inoperable, no other form of sampling can provide the equivalent information.

However, the containment atmosphere activity monitor will provide indications of changes in leakage. Together with the atmosphere monitor, the periodic surveillance for RCS inventory balance, SR 3.4.13.1, water inventory balance, must be performed at an increased frequency of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to provide information that is adequate to detect leakage. A Note is added allowing that SR 3.4.13.1 is not required to be performed until 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after steady state operation (stable RCS pressure, temperature, power level, pressurizer and makeup tank levels, makeup and letdown, and RCP seal injection and return flows). The 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> allowance provides sufficient time to collect and process all necessary data after stable plant conditions are established.

Restoration of the required normal sump level indication to OPERABLE status is required to regain the function in a Completion Time of 30 days after the monitor's failure. This time is acceptable considering the frequency and adequacy of the RCS water inventory balance required by Required Action A.1.B.1.1, B.1.2, and B.2 With the particulate containment atmosphere radioactivity monitoring instrumentation channel inoperable, alternative action is required.

Either grab samples of the containment atmosphere must be taken and analyzed or water inventory balances, in accordance with SR 3.4.13.1, must be performed to provide alternate periodic information.

With a sample obtained and analyzed or a water inventory balance performed every 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, the reactor may be operated for up to 30 days to allow restoration of the radioactivity monitor. (RIA-47)OCONEE UNITS 1,2, & 3 B 3.4.15-3 Amendment Nos. XXX, XXX, & XXX Amendment Nos. 359, 361, 360 RCS Leakage Detection Instrumentation B 3.4.15 BASES (continued)

ACTIONS B.1.1. 1.1.2, and B.2 (continued)

The 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> interval for SR 3.4.13.1 provides periodic information that is adequate to detect leakage. A Note is added allowing that SR 3.4.13.1 is not required to be performed until 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after steady state operation (stable RCS pressure, temperature, power level, pressurizer and makeup tank levels, makeup and letdown, and RCP seal injection and return flows).The 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> allowance provides sufficient time to collect and process all necessary data after stable plant conditions are established.

The 30 day Completion Time recognizes at least one other form of leak detection is available.

C.1 and C.2 If a Required Action of Condition A or B cannot be met within the required Completion Time, the unit must be brought to a MODE in which the LCO does not apply. To achieve this status, the unit must be brought to at least MODE 3 within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and to MODE 5 within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems.D.1 If both required leakage detection instruments are inoperable, no automatic means of monitoring leakage are available, and immediate plant shutdown in accordance with LCO 3.0.3 is required.SURVEILLANCE SR 3.4.15.1 REQUIREMENTS SR 3.4.15.1 requires the performance of a CHANNEL CHECK of the required containment atmosphere radioactivity monitor. The check gives reasonable confidence that the channel is operating properly.

The Frequency of 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> is based on instrument reliability and is reasonable for detecting off normal conditions.

OCONEE UNITS 1, 2,& 3 B 3.4.15-4 Amendment Nos. XXX, XXX, & XXX I Amendment Nos. 359, 361, 360