ML16342C455

Supplement to License Amendment Request, Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value

ML16342C455
Person / Time
Site:	Peach Bottom
Issue date:	12/07/2016
From:	Jim Barstow Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML16342C455 (14)

Text

Exelon Generation 200 Exelon Way Kennett Square, PA 19348 www.exeloncorp.com 10 CFR 50.90 December 7, 2016 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Peach Bottom Atomic Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-44 and DPR-56 N RC Docket Nos. 50-277 and 50-278

Subject:

Supplement to License Amendment Request Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value

Reference:

Letter from Exelon Generation Company (J. Barstow) to the U.S. NRC regarding "Request for License Amendment to Revise Turbine Condenser -

Low Vacuum Scram Instrumentation Function Allowable Value 11 dated November 4, 2016.

On November 4, 2016, in accordance with the provisions of 10 CFR 50.90, 11 Application for amendment of license, construction permit, or early site permit, 11 Exelon Generation Company, LLC (EGC), submitted a request for an amendment to the Technical Specifications (TS), Appendix A of Renewed Facility Operating License Nos. DPR-44 and DPR-56 for Peach Bottom Atomic Power Station (P~APS), Units 2 and 3, respectively.

The proposed amendment requested U.S. Nuclear Regulatory Commission (NRC) approval to revise the TS Allowable Value (AV) for the Reactor Protection System (RPS)

Instrumentation Function 10, 'Turbine Condenser - Low Vacuum, 11 specified in TS Table 3.3.1.1-1, "Reactor Protection System Instrumentation!'

Upon further review, EGC has decided to revise the RPS Turbine Condenser - Low Vacuum AV from the previously proposed 20.0 inches Hg vacuum to the newly proposed 21.5 inches Hg vacuum.

Attachment 1 provides the evaluation of the proposed change. Attachment 2 provides a copy of the marked up TS pages that reflect the proposed change.

EGC has reviewed the information supporting a finding of no significant hazards consideration, and the environmental consideration, that were previously provided to the NRC in Attachment 1 of the Reference letter. Although changes have been made to the no significant hazards consideration to reflect this revision, EGC has concluded that the information provided in this supplement does not affect the bases for concluding that the proposed license amendment does not involve a significant hazards consideration under the standards set forth in 10 CFR 50.92. In addition, EGC has concluded that the

U.S. Nuclear Regulatory Commission License Amendment Request Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value Docket Nos. 50-277 and 50-278 December 7, 2016 Page2 information in this supplement does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendment.

There are no commitments contained within this submittal.

In accordance with 10 CFR 50.91, "Notice for public comment; State consultation,"

paragraph (b), EGC is notifying the Commonwealth of Pennsylvania of this supplement by transmitting a copy of this letter and its attachments to the designated State Official.

If you have any questions or require additional information, please contact Stephanie J.

Hanson at 610-765-5143.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 7th day of December 2016.

Respectfully, James Barstow Director, Licensing & Regulatory Affairs Exelon Generation Company, LLC Attachments: 1. Evaluation of Proposed Change

2. Markup of Proposed Technical Specifications Pages cc: Regional Administrator - NRC Region I w/attachments NRC Senior Resident Inspector- Peach Bottom Atomic Power Station NRC Project Manager, NRA - Peach Bottom Atomic Power Station Director, Bureau of Radiation Protection, Pennsylvania Department of Environmental Protection S. T. Gray, State of Maryland

ATTACHMENT 1 EVALUATION OF PROPOSED CHANGE Supplement to License Amendment Request Peach Bottom Atomic Power Station, Units 2 and 3 Docket Nos. 50-277 and 50-278

Subject:

Supplement to License Amendment Request to Revise Turbine Condenser

- Low Vacuum Scram Instrumentation Function Allowable Value 1.0

SUMMARY

DESCRIPTION 2.0 DETAILED DESCRIPTION

4.0 REGULATORY EVALUATION

4.1 Applicable Regulatory Requirements/Criteria 4.2 Precedence 4.3 No Significant Hazards Consideration 4.4 Conclusions

6.0 REFERENCES

Evaluation of Proposed Change Attachment 1 Supplement to License Amendment Request Page 1of8 Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value Docket Nos. 50-277 and 50-278 1.0

SUMMARY

DESCRIPTION On November 4, 2016, in accordance with the provisions of 10 CFR 50.90, 11 Application for amendment of license, construction permit, or early site permit, 11 Exelon Generation Company, LLC (EGC), submitted a request for an amendment to the Technical Specifications (TS),

Appendix A of Renewed Facility Operating License Nos. DPR-44 and DPR-56 for Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3, respectively (Reference 1).

The proposed amendment requested U.S. Nuclear Regulatory Commission (NRC) approval to revise the TS Allowable Value (AV) for the Reactor Protection System (RPS) Instrumentation Function 10, 11 Turbine Condenser- Low Vacuum, 11 specified in TS Table 3.3.1.1-1, 11 Reactor Protection System lnstrumentation. 11 Upon further review, EGC has decided to revise the RPS Turbine Condenser - Low Vacuum AV from the previously proposed 20.0 inches Hg vacuum to the newly proposed 21.5 inches Hg vacuum.

2.0 DETAILED DESCRIPTION The RPS is a safety related plant protection system. The RPS initiates a reactor scram when one or more monitored parameters exceed their specified limits, to preserve the integrity of the fuel cladding and the Reactor Coolant System (RCS) and minimize the energy that must be absorbed following a loss of coolant accident (LOCA). The protection and monitoring functions of the RPS have been designed to ensure safe operation of the reactor. This is achieved by specifying limiting safety system settings (LSSSs) in terms of parameters directly monitored by the RPS. The LSSSs establish the threshold for protective system action to prevent exceeding acceptable limits, including Safety Limits (SLs) during Design Basis Accidents.

PBAPS TS Section 3.3.1.1 provides the requirements for RPS instrumentation. The various functions of RPS instrumentation for LSSSs and limiting conditions for operation (LCOs) are specified in Table 3.3.1.1-1, along with the applicable operational modes, surveillance requirements (SRs), and AVs. PBAPS TS Table 3.3.1.1-1, Function 10, 11 Turbine Condenser -

Low Vacuum, is required to be operable in Mode 1, with an AV of~ 23.0 inches Hg vacuum.

11 The Turbine Condenser - Low Vacuum Function protects the integrity of the main condenser by scramming the reactor and thereby decreasing the severity of the low condenser vacuum transient on the condenser. This function also ensures integrity of the reactor in the event of loss of its normal heat sink. The reactor scram on a Turbine Condenser - Low Vacuum signal will occur prior to a reactor scram from a Turbine Stop Valve - Closure signal on low condenser vacuum. This function is not specifically credited in any accident analysis but is in TS for the overall redundancy and diversity of the RPS as required by the NRG-approved licensing basis.

Turbine Condenser- Low Vacuum signals are initiated from four vacuum pressure transmitters that provide inputs to associated trip systems. There are two trip systems and two channels per trip system. Each trip system is arranged in a one-out-of-two logic and both trip systems must be tripped in order to scram the reactor.

The Turbine Condenser - Low Vacuum Allowable Value is specified to ensure that a scram occurs prior to the integrity of the main condenser being breached.

Evaluation of Proposed Change Attachment 1 Supplement to License Amendment Request Page 2 of 8 Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value Docket Nos. 50-277 and 50-278 The purpose of the proposed AV change is to reduce potential vulnerability associated with inadvertent scrams due to low condenser vacuum. Reducing the RPS Turbine Condenser -

Low Vacuum AV from the existing 23.0 inches Hg vacuum to 21.5 inches Hg vacuum will provide additional margin, thereby minimizing the potential for inadvertent scrams due to low condenser vacuum. The revision to the AV does not affect the overall redundancy and diversity of the RPS and does not deviate from what is assumed in the transient analysis.

The proposed change to the PBAPS, Units 2 and 3, TS is summarized below:

11 11

1. PBAPS TS Table 3.3.1.1-1, Reactor Protection System lnstrumentation, Function 10,

'Turbine Condenser- Low Vacuum," specifies an AV of"~ 23.0 inches Hg vacuum."

This AV is being revised to ~ 21.5 inches Hg vacuum."

11 A markup of the proposed TS change is provided in Attachment 2.

3.0 TECHNICAL EVALUATION

EGG has determined that the low condenser vacuum scram set point can be reduced. In order to reduce potential vulnerability associated with inadvertent scrams due to low condenser vacuum, EGG proposes to lower the TS AV for the RPS Turbine Condenser Low- Vacuum Function at PBAPS.

Due to increased steam flow at Extended Power Uprate (EPU) conditions, it has been assessed that condensate temperature increases resulting in increased condenser pressure (i.e.,

reduction in condenser vacuum). Increased condensate temperatures have resulted in power derates. Therefore, it is desirable to gain additional margin to reduce the likelihood of a scram due to condenser low vacuum condition.

The purpose of the condenser low vacuum turbine trip is to protect the main condenser against overpressure on loss of condenser vacuum. A condenser low vacuum condition provides a signal to trip the main turbine by providing automatic closure to the turbine stop valves. To anticipate the transient and scram, which results from the closure of the turbine stop valves, a condenser low vacuum condition initiates a reactor scram. The condenser low vacuum scram trip setting is selected to initiate a reactor scram prior to initiation of closure of the Turbine Stop Valves.

As discussed in PBAPS UFSAR Section 14.5.1, events that result directly in significant nuclear system pressure increases are those that result in a sudden reduction of steam flow while the reactor is operating at power. In addition to a reactor scram, a loss of condenser vacuum also results in a main turbine trip. An instantaneous loss of condenser vacuum is a nearly identical transient, with essentially simultaneous scrams from the low vacuum signal and the turbine stop valve position indicating signals. For the loss of vacuum, the feedwater turbines would also be tripped. However, the parameters of main concern, fuel thermal margin and margin to vessel overpressure, are not significantly different from the analysis performed for the turbine trip (no bypass) transient, which is reanalyzed each cycle to evaluate the required core thermal operating limits (i.e., Minimum Critical Power Ratio).

Evaluation of Proposed Change Attachment 1 Supplement to License Amendment Request Page 3 of 8 Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value Docket Nos. 50-277 and 50-278 EGC's procedure CC-MA-103-2001, "Setpoint Methodology for Peach Bottom Power Atomic Station and Limerick Generating Station," establishes the methods for determining instrument loop uncertainties and combining those uncertainties to determine allowable values, instrument setpoints, and associated tolerances for plant instrumentation and surveillance procedure acceptance criteria. This procedure also incorporates the requirements of Technical Specification Task Force, TSTF-493-A, Revision 4, "Clarify Application of Setpoint Methodology for LSSS Functions."

CC-MA-103-2001 is based on General Electric's NEDC-31336 P-A, September 1996, - "General Electric Company Instrument Setpoint Methodology (Proprietary)." This NRG-approved topical report ensures that nominal trip setpoints, actual trip setpoints, allowable values, and required as-left and as-found tolerances are determined using consistent methods and provides the controls to ensure that the calculations and basis for these values are documented and retrievable.

Using the EGC setpoint methodology program, the current TS-based approved calculation contains the following parameters:

• Analytical Limit (AL) 1 =22.00 inches Hg vacuum

• Allowable Value (AV) =23.00 inches Hg vacuum

• Actual Trip Setpoint (ATSP) = 23.45 inches Hg vacuum Because the trip setpoint is not assumed in the transient analyses, it is planned to lower the AL by an amount to maintain adequate margin between the AL and the new AV, which will be reflected in the final calculation. This will ensure that the RPS function still occurs before the Turbine Stop Valve Closure scram function while preserving the assumptions of the plant licensing basis.

Upon implementation of the proposed AV change, the Turbine Condenser - Low Vacuum scram instrument function at PBAPS Units 2 and 3 will continue to serve as an anticipatory signal to the turbine stop valve closure scram function (i.e., a scram signal generated with a turbine trip -

TS Table 3.3.1.1-1, Function 8). As such, the Turbine Condenser - Low Vacuum scram function does not directly protect a Safety Limit. Consistent with the guidance in Regulatory Issue Summary (RIS) 2006-17, "NRC Staff Position on the Requirements of 10 CFR 50.36,

'Technical Specifications,' Regarding Limiting Safety System Settings During Periodic Testing and Calibration of Instrument Channels," and the listing of Instrumentation functions within the scope of Attachment A of TSTF-493-A, Revision 4, Clarify Application of Setpoint Methodology for LSSS Functions, the setpoint change for the Turbine Condenser - Low Vacuum setpoint would not require implementation of TSTF-493-A, Revision. 4.

The proposed LAR does not change the sequential relationship of the condenser low vacuum scram and turbine trip. The Automatic Scram signal (ATSP greater than or equal to 21.95 inches Hg vacuum) will still occur prior to the Turbine Trip signal (ATSP 20.0 inches Hg vacuum). This aligns with UFSAR Section 7.2 in that the condenser low vacuum scram is an anticipatory trip prior to the scram that would result from the closure of the main turbine stop valves.

1 This parameter is considered a design limit since it is not used in any accident analysis.

Evaluation of Proposed Change Attachment 1 Supplement to License Amendment Request Page 4 of 8 Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value Docket Nos. 50-277 and 50-278 Condenser Vacuum Current and Proposed Parameters Current (inHg Vac) Proposed (inHg Vac)

Normal Vacuum 27 27 Low Vacuum Alarm 24.9 24.9<:'.

Manual Rx Scram - Low Condenser Vacuum 24 23 Actual Trip Setpoint (ATSP) 23.45 21.95<:'.

Nominal Trip Setpoint (NTSP) 23.01 21.51<:'.

Auto Rx Scram - Low Cond. Vacuum (Allowable 23.0 21.5 Value) 1 Analytical Limit 22.0 20.5 Turbine Trip (Rx Scram when power> 26.7%) 20 20 Bypass Valve Closure 7 7 Table Notes:

1. This parameter is considered a design limit since it is not used in any accident analysis.

2. These values are subject to change as part of the finalized formal calculation process for the set point change.

The current total loop uncertainty is 1.23 inches Hg (including conservatively assigned margin, which could change during the finalization of the associated calculation). The NTSP is calculated using the approved set point calculation methodology discussed above (CC-MA-103-2001 ). The following is taken from CC-MA-103-2001:

The NTSP is determined by the relationship:

NTSP = DL +/- 1.645/N(LA2 +LD 2+PMA2 +PEA2+CA2 ) 112

+/- bias +/- dependent uncertainties where, 1.645 = The standard deviation corresponding to a 95% confidence level for a one sided normal distribution.

N= The number of standard deviations corresponding to the confidence level of the information used in the formula. For the purposes of the procedure, all calculations are prepared to a 2-sigma confidence level (N=2).

DL= Design Limit LA= Loop Accuracy LD= Loop Instrument Drift PMA= Process Measurement Accuracy PEA= Primary Element Accuracy CA= Calibration Accuracy The condenser low vacuum scram is not specifically credited in any accident analysis.

However, PBAPS UFSAR Section 14.9 describes the Control Rod Drop Accident which assumes condenser integrity. The integrity of the condenser is not compromised by the proposed changes because the reactor will be shut down using both diverse and redundant tripping to ensure fission products are not released.

Evaluation of Proposed Change Attachment 1 Supplement to License Amendment Request Page 5 of 8 Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value Docket Nos. 50-277 and 50-278

4.0 REGULATORY EVALUATION

4.1 Applicable Regulatory Requirements/Criteria The following regulatory requirement was considered:

• Title 1O of the Code of Federal Regulations (10 CFR), Section 50.36, 'Technical specifications," in which the Commission established its regulatory requirements related to the contents of the TS. Specifically, 10 CFR 50.36(c)(1 )(ii)(A) requires that the Technical Specifications include Limiting Safety System Settings (LSSSs) for variables that have significant safety functions. For variables on which a Safety Limit (SL) has been placed, the LSSS must be chosen to initiate automatic protective action to correct abnormal situations before the SL is exceeded. The regulation also requires appropriate action if it is determined that the automatic safety system does not function as required to protect an SL.

Upon implementation of the proposed AV change, the Turbine Condenser - Low Vacuum scram instrument function at PBAPS Units 2 and 3 will continue to serve as an anticipatory signal to the turbine stop valve closure scram function (i.e., a scram signal generated with a turbine trip -

TS Table 3.3.1.1-1, Function 8).

The proposed change does not involve any physical changes to the structures, systems, or components (SSCs) in the plant. Further, the proposed change does not alter or prevent the ability of SSCs from performing their intended function to mitigate the consequences of an event.

4.2 Precedence The proposed change to revise the Turbine Condenser- Low Vacuum Allowable Value is similar to that which was approved for Dresden and Quad Cities (Reference 2).

4.3 No Significant Hazards Consideration Exelon Generation Company, LLC (EGC), proposes a change to the Technical Specifications (TS), Appendix A of Renewed Facility Operating License Nos. DPR-44 and DPR-56 for Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3, respectively.

The proposed amendment would revise the TS Allowable Value (AV) for the PBAPS Reactor Protection System (RPS) Instrumentation Function 10, "Turbine Condenser - Low Vacuum, 11 specified in TS Table 3.3.1.1-1, "Reactor Protection System Instrumentation."

EGC has evaluated whether or not a significant hazards consideration is involved with the proposed amendment by focwsing on the three standards set forth in 10 CFR 50.92, "Issuance of amendment," as discussed below:

1. Does the proposed change involve a significant increase in the probability or consequences of an accident previously evaluated?

Response: No.

Evaluation of Proposed Change Attachment 1 Supplement to License Amendment Request Page 6 of 8 Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value Docket Nos. 50-277 and 50-278 The proposed change implements a revised AV for the Turbine Condenser - Low Vacuum scram instrument function at PBAPS.

The proposed change to the PBAPS Turbine Condenser - Low Vacuum scram AV does not require modifying any system interface or affect the probability of any event initiators at the facility. Overall RPS performance will remain within the bounds of the previously performed accident analyses, since no hardware changes are proposed.

There will be no degradation in the performance of, or an increase in the number of challenges imposed on safety-related equipment that are assumed to function during an accident situation. The proposed change will not alter any assumptions or change any mitigation actions in the radiological consequence evaluations in the UFSAR. The proposed change is consistent with safety analysis assumptions and resultant consequences.

Therefore, the proposed change does not involve a significant increase in the probability or consequences of an accident previously evaluated.

2. Does the proposed change create the possibility of a new or different kind of accident from any accident previously evaluated?

Response: No.

The proposed change to the PBAPS Turbine Condenser - Low Vacuum scram AV does not affect the design, functional performance, or operation of the facility. Similarly, the proposed change does not affect the design or operation of any SSCs involved in the mitigation of any accidents, nor does it affect the design or operation of any component in the facility such that new equipment failure modes are created.

No new accident scenarios, transient precursors, failure mechanisms, or limiting single failures are introduced as a result of this change. There will be no adverse effect or challenges imposed on any safety-related system as a result of this change.

Therefore, the proposed change does not create the possibility of a new or different kind of accident from any accident previously evaluated.

3. Does the proposed change involve a significant reduction in a margin of safety?

Response: No.

The proposed change does not affect the acceptance criteria for any analyzed event, nor is there a change to any Safety Analysis Limit. There will be no effect on the manner in which safety limits, limiting safety system settings, or limiting conditions for operation are determined nor will there be any effect on those plant systems necessary to assure the accomplishment of protection functions.

The purpose of the condenser low vacuum turbine trip is to protect the main condenser against overpressure on loss of condenser vacuum. A condenser low vacuum condition provides a signal to trip the main turbine by providing automatic closure to the turbine

Evaluation of Proposed Change Attachment 1 Supplement to License Amendment Request Page 7 of 8 Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value Docket Nos. 50-277 and 50-278 stop valves. To anticipate the transient and scram which results from the closure of the turbine stop valves, a condenser low vacuum condition initiates a reactor scram. The condenser low vacuum scram trip setting is selected to initiate a reactor scram prior to initiation of closure of the Turbine Stop Valves.

The proposed LAR does not change the sequential relationship of the condenser low vacuum scram and turbine trip. The Automatic Scram signal (Actual Trip Setpoint greater than or equal to 21.95 inches Hg vacuum) will still occur prior to the Turbine Trip signal (Actual Trip Setpoint 20.0 inches Hg vacuum). This aligns with UFSAR Section 7 .2 in that the condenser low vacuum scram is an anticipatory trip prior to the scram that would result from the closure of the main turbine stop valves.

The condenser low vacuum scram is not specifically credited in any accident analysis.

The integrity of the condenser is not compromised by the proposed change because the reactor will be shut down using both diverse and redundant tripping to ensure fission products are not released.

Therefore, the proposed change does not involve a significant reduction in the margin of safety.

Based on the above, EGC concludes that the proposed amendment presents no significant hazards consideration under the standards set forth in 10 CFR 50.92(c), and, accordingly, a finding of "no significant hazards consideration" is justified.

4.4 Conclusions In conclusion, based on the considerations discussed above, (1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) such activities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendment will not be inimical to the common defense and security or to the health and safety of the public.

5.0 ENVIRONMENTAL CONSIDERATION

A review has determined that the proposed amendment would change a requirement with respect to installation or use of a facility component located within the restricted area, as defined in 10 CFR 20, or would change an inspection or surveillance requirement. However, the proposed amendment does not involve (i) a significant hazards consideration, (ii) a significant change in the types or significant increase in the amounts of any effluent that may be released offsite, or (iii) a significant increase in individual or cumulative occupational radiation exposure.

Accordingly, the proposed amendment meets the eligibility criterion for categorical exclusion set forth in 10 CFR 51.22(c)(9). Therefore, pursuant to 10 CFR 51.22(b), no environmental impact statement or environmental assessment need be prepared in connection with the proposed amendment.

Evaluation of Proposed Change Attachment 1 Supplement to License Amendment Request Page 8 of 8 Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value Docket Nos. 50-277 and 50-278

6.0 REFERENCES

1. Letter from Exelon Generation Company (J. Barstow) to the U.S. NRC regarding 11 Request for License Amendment to Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value 11 dated November 4, 2016.

2. Letter from J. Wiebe (U.S. NRC) to C. G. Pardee (Exelon Generation Company, LLC),

11 Dresden Nuclear Power Station, Units 2 and 3 and Quad Cities Nuclear Power Station, Units 1 and 2 - Issuance of Amendments Regarding Turbine Condenser Vacuum - Low Scram Instrumentation Setpoint (TAC Nos.MD6250, MD6251, MD6252 and MD6253) 11 dated April 18, 2008 (ADAMS Accession No. ML081060235).

ATTACHMENT 2 Markup of Technical Specifications Pages Peach Bottom Atomic Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-44 and DPR-56 Docket Nos. 50-277 and 50-278 Supplement to License Amendment Request Revise Turbine Condenser - Low Vacuum Scram Instrumentation Function Allowable Value Unit 2 TS Pages 3.3-8 Unit 3 TS Pages 3.3-8

RPS Instrumentation 3.3.1.1 Table 3.3.1.1-1 (page 2 of 3)

Reactor Protection System Instrumentation APPLICABLE CONDITIONS MODES OR REQUIRED REFERENCED OTHER CHANNELS FROM SPEC! FI ED PER TRIP REQUIRED SURVEILLANCE ALLOWABLE FUNCTION CONDITIONS SYSTEM ACTION D.l REQUIREMENTS VALUE

3. Reactor Pressure -High 1, 2 G SR 3.3.1.1.1 :5 1085.0 psig SR 3.3.1.1.9 SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3. 3 .1.1.18

4. Reactor Vessel Water 1, 2 2 G SR 3.3.1.1.1 ~ 1.0 inches Level-Low (Level 3) SR 3.3.1.1.9 SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

5. Main Steam Isolation 8 SR 3.3.1.1.9 :5 10% closed Valve -Closure SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

6. Drywel l Pressure-High 1, 2 G SR 3.3.1.1.1 :5 2. D psig SR 3.3.1.1.9 SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

7. Scram Discharge Volume 1,2 2 G SR 3.3.1.1.9 :5 50.0 gallons Water Level -High SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18 5Ca) 2 H SR 3.3.1.1.9 :5 50.0 gallons SR 3.3.1.1.15 SR 3.3.1.1.17

8. Turbine Stop ~ 26.7% RTP 4 SR 3.3.1.1.9 :5 10% closed Va l v e -Cl o s u re SR 3.3.1.1.13 SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

9. Turbine Control Valve ~ 26.7% RTP 2 SR 3.3.1.1.9 ~ 500.0 psig Fast Closure, Trip Oil SR 3.3.1.1.13 Pressure-Low SR 3.3.1.1.15

~

SR 3.3.1.1.17 SR 3.3.1.1.18

10. Turbine Condenser -Low 2 SR 3.3.1.1.1 ~ ~ inches Vacuum SR 3.3.1.1.9 Hg vacuum SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

11. Main Steam Line -High 1,2 2 G SR 3.3.1.1.1 :5 15 X Full Radiation SR 3.3.1.1.10 Power SR 3.3.1.1.16 Background SR 3.3.1.1.17 SR 3.3.1.1.18

12. Reactor Mode Switch - 1,2 G SR 3.3.1.1.14 NA Shutdown Position SR 3.3.1.1.17 5 Ca) H SR 3.3.1.1.14 NA SR 3.3.1.1.17 (continued)

(a) With any control rod withdrawn from a core cell containing one or more fuel assemblies.

PBAPS UNIT 2 3.3-8 Amendment No. 293

RPS Instrumentation 3.3.1.1 Table 3.3.1.1-1 (page 2 of 3)

Reactor Protection System Instrumentation APPLICABLE CONDITIONS MODES OR REQUIRED REFERENCED OTHER CHANNELS FROM SPECIF! ED PER TRIP REQUIRED SU RV EI LLANC E ALLOWABLE FUNCTION CONDITIONS SYSTEM ACTION D.l REQUIREMENTS VALUE

3. Reactor Pressure - High 1, 2 G SR 3.3.1.1.1 s 1085.0 psig SR 3.3.1.1.9 SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

4. Reactor Vessel Water l, 2 2 G SR 3.3.1.1.1 ~ 1.0 inches Level-Low (Level 3) SR 3.3.1.1.9 SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

5. Main Steam Isolation 8 F SR 3.3.1.1.9 s 10% closed Valve-Closure SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

6. Drywell Pressure-High 1, 2 2 G SR 3.3.1.1.1 s 2.0 psig SR 3.3.1.1.9 SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

7. Scram Discharge Volume 1, 2 2 G SR 3.3.1.1.9 s 50. 0 ga 11 ans Water Level - High SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18 5 (a) H SR 3.3.1.1.9 s 50.0 gallons SR 3.3.1.1.15 SR 3.3.1.1.17

8. Turbine Stop ~ 26. 7% RTP 4 SR 3.3.1.1.9 s 10% closed Valve-Closure SR 3.3.1.1.13 SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

9. Turbine Control Valve ~ 26. 7% RTP 2 SR 3.3.1.1.9 ~ 500.0 psig Fast Closure, Trip Oil SR 3.3.1.1.13 Pressure - Low SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

10. Turbine Condenser - Low SR 3.3.1.1.1 ~ ~ inches Vacuum SR 3.3.1.1.9 Hg vacuum SR 3.3.1.1.15 SR 3.3.1.1.17 SR 3.3.1.1.18

11. Deleted 12 . Reactor Mode Switch - 1, 2 G SR 3.3.1.1.14 NA Shutdown Position SR 3.3.1.1.17 5 Ca> H SR 3.3.1.1.14 NA SR 3.3.1.1.17 (continued)

(a) With any control rod withdrawn from a core cell containing one or more fuel assemblies.

PBAPS UNIT 3 3.3-8 Amendment No. 302