ML13343A024

License Amendment Request- Leak Detection System Technical Specification Setpoint, Allowable Value and Design Basis Changes

ML13343A024
Person / Time
Site:	Limerick
Issue date:	12/06/2013
From:	Jim Barstow Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML13343A024 (151)

Text

December 6, 2013 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Limerick Generating Station, Units 1 and 2 Facility Operating License Nos. NPF-39 and NPF-85 NRC Docket Nos. 50-352 and 50-353 10 CFR 50.90

Subject:

License Amendment Request-Leak Detection System Technical Specification Setpoint, Allowable Value and Design Basis Changes In accordance with 10 CFR 50.90, "Application for amendment of license or construction permit," Exelon Generation Company, LLC (Exelon) requests the following amendments to the Technical Specifications, Appendix A, of Facility Operating License Nos. NPF-39 and NPF-85 for Limerick Generating Station (LGS), Units 1 and 2.

The proposed amendments would revise the Technical Specification (TS) Setpoints and Allowable Values for LGS, Units 1 and 2, for the following instrumentation in TS Table 3.3.2-2, "Isolation Actuation Instrumentation Setpoints:..

RWCS Area Temperature High-Isolation (RWCS HX Rooms)

HPCI Equipment Room Temperature High - Isolation HPCI Pipe Routing Area Temperature High-Isolation RCIC Equipment Room Temperature High Isolation RCIC Pipe Routing Area Temperature High - Isolation The proposed amendment would also revise the design basis for calculating the isolation setpoint for the following instrumentation in TS Table 3.3.2-2, "Isolation Actuation Instrumentation Setpoints/' Item No. 1.g:

Turbine Enclosure-Main Steam Line Tunnel Temperature High-Isolation (The setpoint of this instrumentation is not being changed.) provides the Evaluation of Proposed Changes. Attachment 2 provides the Proposed Technical Specification Marked-Up Pages. Attachment 3 provides summary results of Calculation -1001 Steam Leak Room Temperature Response Graphs.

U.S. Nuclear Regulatory Commission LAR - LDS TS Setpoint, Allowable Value and Design Basis Changes December 6, 2013 Page 2 provides Instrument Loop Uncertainty Calculations for TE-044*1 N016A, TE-055-1 N030B, TE-055-1 N025B, TE-049-1 N023A and TE-049-1 N025A.

The proposed changes have been reviewed by the LGS, Units 1 and Plant Operations Review Committee and approved in accordance with Nuclear Safety Review Board procedures.

Exefon requests approval of the proposed amendments by December 6, 2014. Once approved, the amendments shall be implemented within 60 days.

There are no regulatory commitments contained in this request.

Using the standards in 10 CFR 50.92,.. Issuance of amendment," Exelon has concluded that these proposed changes do not constitute a significant hazards consideration as described in the enclosed analysis performed in accordance with 10 CFR 50.91 (a)(1 ).

In accordance with 10 CFR 50.91, "Notice for public comment; State consultation,~~ Exelon is notifying the Commonwealth of Pennsylvania of this application for changes to the TS and Operating Licenses by transmitting a copy of this letter and its attachments to the designated state official.

Should you have any questions concerning this submittal, please contact Frank Mascitelli at {610) 765-5512.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 6th day of December 2013.

Respectfully,

~~~

James Barstow Director, Licensing & Regulatory Affairs Exelon Generation Company, LLC Attachments: 1) Evaluation of Proposed Technical Specification Changes

2) Proposed Technical Specification Marked-Up Pages

3) Calculation -1001 Steam Leak Room Temperature Response Graphs

4) Instrument Loop Uncertainty Calculations for TE-044-1 N016A, TE-055-1 N030B, TE-055-1 N025B, TE-049-1 N023A and TE-049-1 N025A cc:

USNRC Regional Administrator, Region I USNRC Project Manager, LGS USNRC Senior Resident Inspector, LGS Director, Bureau of Radiation Protection-PA Department of Environmental Resources

ATTACHMENT1 EVALUATION OF PROPOSED TECHNICAL SPECIFICATION CHANGES

SUBJECT:

Leak Detection System Technical Specification Setpoint, Allowable Value and Design Basis Changes CONTENTS 1.0

SUMMARY

DESCRIPTION 2.0 DETAILED DESCRIPTION

4.0 REGULATORY EVALUATION

4.1 APPLICABLE REGULATORY REQUIREMENTS/CRITERIA 4.2 PRECEDENT 4.3 NO SIGNIFICANT HAZARDS CONSIDERATION

4.4 CONCLUSION

S

6.0 REFERENCES

Evaluation of Proposed Technical Specification Changes Leak Detection System Technical Specification Setpoint, Allowable Value and Design Basis Changes 1.0

SUMMARY

DESCRIPTION Page 1 of 13 This evaluation supports a request to amend Operating Licenses NPF-39 and NPF-85 for Limerick Generating Station (LGS), Units 1 and 2.

The proposed changes will revise the following Technical Specification (TS) instrument setpoints and allowable values associated with the LGS Leak Detection System (LDS) for the following areas listed in Table 1 below:

Reactor Water Cleanup System (RWCS) rooms High Pressure Coolant Injection (HPCI) room and pipe routing area Reactor Core Isolation Cooling (RCIC) room and pipe routing area Table 1 - List of Proposed TS Instrument Changes TS Table Current Proposed Current TS 3.3.2-2 Description TS TS Allowable Item No.

Setpoint Setpoint Value RWCS Area Temperature 3.b.

High (Heat Exchanger s 132 °F s 120 °F s 137 °F Rooms) 4.d.

HPCI Equipment Room

= 225 °F

= 180 °F

~ 218 °F, Temperature High s 247 °F 4.f.

HPCI Pipe Routing Area

= 175 °F

= 180 °F

~ 165 °F, Temperature High s 200 °F 5.d.

RCIC Equipment Room

= 205 °F

= 180 °F

~ 198 °F, Temperature High s 227 °F 5.f.

RCIC Pipe Routing Area

= 175 °F

= 180 °F

~ 165 °F, Temperature High s 200 °F Proposed TS Allowable Value s 125 °F

~ 177 °F, s 191 °F

~ 177 °F, s 191 °F

~ 161 °F, s 191 °F

~ 161 °F, s 191 °F The proposed change also will approve the use of a 35-gpm leak as the design basis for the setpoint for the Turbine Enclosure-Main Steam Line Tunnel Temperature-High Tech Spec isolation setpoint (TS Table 3.3.2-2 Item No. 1.g) during winter operating conditions.

Exelon Generation Company, LLC (Exelon) requests approval of the proposed changes. Once approved, the amendments shall be implemented within 60 days.

2.0 DETAILED DESCRIPTION During the preparation of Revision 4 of the leak detection Calculation -1 001,.. Compartment Temperature Transients for Steam and Water Leaks,.. it was noted that setpoints for several steam leak detection instruments had been calculated without state-of-the-art modeling and computer driven algorithms. Using the current revision to CFLUD (Reference 1 ), which contains state-of-the-art modeling features, the resulting calculations indicated that for the subject areas, the current setpoints had very little margin present during normal building ventilation operation and winter conditions for isolating a 25-gpm steam leak. Also, an inconsistency was noted between the HPCI/RCIC pipeway isolation setpoints and the HPCI/RCIC equipment room

Evaluation of Proposed Technical Specification Changes Page 2 of 13 isolation setpoints. Therefore, Revision 5 of Calculation -1 001 (Reference 2) was prepared to address these conditions. As a result of Revision 5 to Calculation -1 001, changes are requested for the TS allowable values and instrument setpoints for the high temperature isolation setpoints for the RWCS Area, HPCI/RCIC equipment rooms and the HPCI/RCIC pipe routing areas.

The LOS consists of the following safety-related subsystems:

Main steam line leak detection system RWCS leak detection system HPCIIeak detection system RCIC leak detection system The purpose of the leak detection system instrumentation and controls is to detect and provide the signals necessary to isolate leakage from the reactor coolant pressure boundary before predetermined limits are exceeded. The current licensing bases are contained in several sections of the Updated Final Safety Analysis (UFSAR) (Reference 3).

The main steam lines (MSL) are constantly monitored for leaks by the LOS. Steam line leaks cause changes in at least one of the following monitored operating variables: area ambient and differential temperature, flow rate, or low water level in the reactor vessel. If a leak is detected, the detection system responds by triggering an annunciator and initiating a steam line isolation trip logic signal.

This license amendment request only affects the instrument isolation setpoints of the circuits that monitor the ambient temperature and provide system isolations on high ambient temperature for the RWCS Area, HPCI/RCIC equipment rooms, and HPCI/RCIC pipe routing areas due to a 25-gallon per minute (gpm) leak. The steam leak detection system is comprised of Temperature Indicating Switches (TISs) TIS-025-101 A, 8, C, D and TIS-025-201 A, 8, C, D.

The TISs receive data from temperature elements located in the areas being monitored and determine if the temperature has reached its alarm or isolation setpoints. If reached, an automatic isolation I alarm signal is initiated and an annunciator is activated in the control room.

The TIS setpoints are selected high enough to avoid spurious isolations, yet low enough to provide timely detection of a small leak and an isolation at 25 gpm for the subject areas.

3.0 TECHNICAL EVALUATION

Setpoint Changes The LOS does not provide any automatic trip function for protection against a violation of a reactor core Safety Limit (SL), or a Reactor Coolant System Pressure Safety Limit, during an Anticipated Operational Occurrence (AOO), a normal operational transient, or steady state operation.

Calculation -1 001 contains the detailed design analysis that supports setting the appropriate analytical limits for the LOS. The analytical limits derived from this calculation are used as inputs to the LGS Setpoint Methodology (Reference 4) which is based on the General Electric (GE) Instrument Setpoint Methodology (References 5, 6) that calculates the TS Allowable Values and Trip Setpoints.

Evaluation of Proposed Technical Specification Changes Page 3 of 13 Revision 5 to Calculation -1 001 was completed in January 2013. This revision was completed using the CFLUD program which is the same computer program used for the computation performed to support a 2011 License Amendment (Reference 7). Design inputs were source verified and conservatively chosen. The outputs of the CFLUD computations are summarized in, which contains graphs showing the Turbine Enclosure-Main Steam Line Tunnel room, RWCS Area, HPCI/RCIC equipment rooms and HPCI/RCIC pipe routing areas room temperature response as a function of time following small leaks and 25 gpm steam leak events. The room and piping area temperature analytical limits for isolation setpoints are based on the maximum room temperature resulting from a 25 gpm equivalent leak for summer and winter conditions. The minimum of these two values is the recommended analytical limit for isolation setpoint calculations. For the lower temperature cases (winter), the reactor building is assumed to start at 65 oF based on the minimum design temperature for the reactor building in Spec M-171 (Reference 8). For the higher temperature cases (summer), the reactor building is started at 98.5 oF, and the outside atmosphere is held constant at 95 oF and 4 7°/o relative humidity.

In regards to establishing adequate margins, the recommended analytical limit, computed as described above, was compared to the maximum expected temperature for normal balance of plant systems operations or post loss of coolant accident I station blackout (LOCA I SBO) temperature for HPCI and RCIC equipment rooms. The HPCI and RCIC equipment room temperatures were derived from Spec M-171 and procedure ST 107-590-1 (2) (Reference 9) for normal temperatures only, or calculation LM-0060 (Reference 1 0) for SBO temperatures.

The recommended minimum margin between the expected maximum operating temperature and the analytical limit for the isolation setpoint is 20 oF to ensure that normal variations in the maximum operating temperature do not result in system isolation.

The results of Calculation -1001 specified the following analytical values listed in Table 2:

Table 2-Calculation -1001 Recommended Analytical Limits Technical Specification Description Calculation -1001 Recommended Analytical Limits Changes RWCS Area Temperature High (Heat Exchanger From 140 oF to 128 oF Rooms} (Isolation}

HPCI Equipment Room Temperature High (Isolation)

From 250 oF to 194 oF HPCI Pipe Routing Area Temperature High (Isolation)

From 200 oF to 194 oF RCIC Equipment Room Temperature High (Isolation)

From 230 oF to 194 oF RCIC Pipe Routing Area Temperature High (Isolation)

From 200 oF to 194 oF The Calculation -1001 Revision 5 recommended analytical limits (AL) were used as the design basis input for calculating the subject TS instrument setpoint and allowable value changes. The setpoint calculation methodology was performed in accordance with Exelon Procedure CC-MA-1 03-2001 (Reference 4) and based on the General Electric Company Instrument Setpoint Methodology (References 5, 6). This calculation methodology was used to determine changes to the allowable value (AV), actual trip setpoint (ATSP), nominal trip setpoint (NTSP) and setting tolerance for the subject TS instrument loops. The basic formulas and assumptions used in the instrument loop uncertainty calculations are:

Evaluation of Proposed Technical Specification Changes Page 4 of 13 NTSP:

Given-established from Calculation -1001 Revision 5 AV = AL -0.8225 ~L CA 2 + L CL 2 +PC 2 *Span Where:

1) 1.645 I (2 sigma) = 0.8225 (convert from 2 sigma to 1.645 sigma for one-sided normal distribution for 95°/o probability)

2) CA = Device Accuracy/ Reference Accuracy

3) CL =Loop Calibration Allowance= Test Equipment Uncertainty (MTE) or Setting Tolerance

4) PC= Process Consideration (margin for conservatively rounded down AV)

5) Span = instrument range NTSP = AL- 0.8225/I CA 2 + L CL 2 + L D 2 + PC 2 *Span Where D = Device Drift adjusted for calibration frequency A TSP: NTSP - assigned margin Where the assigned margin is determined considering leave-alone-zone (LAZ) and the setting tolerances LAZ and Setting Tolerances:

The LAZ is a range of acceptable values around a nominal value established by adding or subtracting the required accuracy from the nominal value. Typically, the minimum LAZ is equal to the square root of the sum of the squares of the setting tolerances. However, it may be expanded based on engineering judgment. When an instrument reading (cardinal point of calibration or trip setpoint) is found within this band during surveillance testing or calibration checks, no calibration adjustment is required. In special cases, the LAZ can be established as a non-uniform band around the nominal value. The delta between the AV and the ATSP should meet the program guidance of equal to or greater than 1.5 times the loop LAZ.

Bases for Instrument Loop Uncertainty Calculation:

LGS setpoint methodology complies with the intent of the following industry standards and guidelines:

- NEDC-31336, Class 3, October 1986, GE Instrument Setpoint Methodology

- NEDC-31336P-A, Class 3, September 1996, GE Instrument Setpoint Methodology

- ANSI/ISA-67.04.01-1987, Setpoints for Nuclear Safety-Related Instrumentation (Reference 11)

Evaluation of Proposed Technical Specification Changes Page 5 of 13 Instrument Channel Operability:

With respect to instrument channel operability, the following actions are taken based on the As-Found value during surveillance testing (Reference 12):

If the As-Found value falls outside the LAZ but below the AV, the following actions are taken:

1) The work group supervisor is notified.

2) Recalibration of the device is attempted.

3) The test is repeated.

4} If the results are within the LAZ, then the surveillance test is Passed and no further action is taken.

5) If the results are still outside the LAZ, then the test is Failed and the device is entered into the corrective action program for repair/replacement.

If the As-Found value exceeds the AV, then the following actions are taken:

1} The Shift Supervisor is notified.

2} The work group supervisor is notified.

3} The channel is declared inoperable.

4) The issue is entered into the corrective action program.

5} Recalibration of the device is attempted.

6} The test is repeated.

7) If the results are within the LAZ, then the test is Failed/Passed.

8} If the results are still outside the LAZ, then the test is Failed and the device is entered into the corrective action program for repair/replacement The results of the TS instrument loop uncertainty calculations have been summarized in Table 3 below:

Table 3 - Results of TS Instrument Loop Uncertainty Calculations TS Table Description /Instrument Loop AL AV NTSP ATSP 3.3.2-2 Item No.

RWCS Area Temperature High 3.b.

(Heat Exchanger Rooms}

128 °F s 125 °F 124.36 °F s 120 °F TE-044-1 N016A HPCI Equipment Room Temperature

177 °F, 4.d.

High 194 °F s 191 °F 190.36 °F = 180 °F TE-055-1 N030B HPCI Pipe Routing Area

177 °F, 4.f.

Temperature High 194 °F s 191 °F 190.36 °F = 180 °F TE-055-1 N025B RCIC Equipment Room

161 °F, 5.d.

Temperature High 194 °F s 191 °F 190.36 °F = 180 °F TE-049-1 N023A RCIC Pipe Routing Area

161 °F, 5.f.

Temperature High 194 °F s 191 °F 190.36 °F = 180 °F TE-049-1 N025A

Evaluation of Proposed Technical Specification Changes Page 6 of 13 provides the complete instrument loop uncertainty calculations for LGS Unit 1 temperature instrument loops TE-044-1 N016A, TE-055-1 N030B, TE-055-1 N025B, TE-049-1 N023A and TE-049-1 N025A. These calculations are also applicable to the corresponding Unit 2 temperature instrument loops.

Turbine Enclosure MSL Tunnel Temperature-High Isolation Leakage Design Basis Change During the revision of Calculation -1001, low margins were noted for the temperature TS isolation setpoint in the turbine enclosure MSL tunnel for a 25-gpm leak. Currently, with a 25-gpm leak at winter conditions, only 2.5 °F margin exists. Consideration was given to reducing the temperature TS isolation setpoint (TS Table 3.3.2-2, Item No. 1.g) from 165 oF to 155 oF to restore LDS operational margin during winter conditions. In regards to steam leak detection systems, a 25-gpm leak has been historically considered an appropriate leakage criteria for use in analyses to determine the MSL isolation setpoint analytical values. This specific leakage detection capability is specified in General Electric design specifications and had been accepted by the NRC staff as the licensing design basis requirement for LGS and similar designed GE Boiling Water Reactor (BWR-4) nuclear facilities.

However, several high temperature readings of 153 oF were noted during normal operations in the summer of 2013 for several of the temperature elements supplying isolation readings.

Decreasing the setpoint to 155 oF to restore LDS operational margin during winter conditions would not be prudent, since it would significantly increase the probability of an inadvertent MSL isolation and turbine trip due to normal operational transients (such as loss of Turbine Enclosure HVAC). Station operational margin can be restored by changing the design basis for the isolation temperature setpoint during winter operations, while maintaining the current TS isolation setpoint at 165 °F. Changing the basis from a 25-gpm equivalent steam leak to a 35-gpm equivalent steam leak during winter operations yields winter temperatures equivalent to summer temperatures following a 25 gpm leak and provides approximately 20 oF of LDS operational margin. Additionally, alarms set at 155 oF would provide operators with indication of leakage at lower levels.

Increasing the allowable leakage from 25 gpm equivalent to 35 gpm equivalent leakage does not significantly increase the consequences of an accident previously evaluated. The design basis for the LDS is bounded by the analysis of the Main Steam Line Break (MSLB) analyzed in UFSAR Section 15.6.4. The integrated loss of reactor coolant from the MSLB is given in UFSAR paragraph 15.6.4.4 as 108,7851b. Calculation -1001 gives the equivalent leakage from a 25-gpm leak as 3.33 pounds mass (lbm)/sec. Increasing this value to 35 gpm equivalent would increase leakage to approx 4.661bm/sec. From a review of the results graphs given in Calculation -1001 (Attachment 3), it can be seen that any leak would be isolated in less than 15 minutes. Therefore, increasing the basis leakage from 25 gpm to 35 gpm equivalent would only be expected to increase the total integrated coolant loss from approximately 3000 Ibm to approximately 4200 Ibm. This represents an insignificant increase when compared to the analyzed limit. The High Energy Line Break Analysis and MSLB Dose Evaluation are not impacted by this insignificant increase in total integrated coolant loss. Since the Turbine Enclosure MSL Tunnel Temperature - High TS setpoint of the leak detection system would not be affected by this design basis change, no environmentally qualified equipment would be impacted by this change.

Evaluation of Proposed Technical Specification Changes

4.0 REGULATORY EVALUATION

4.1 APPLICABLE REGULATORY REQUIREMENTS/CRITERIA Page 7 of 13 The proposed changes have been evaluated to determine whether applicable regulations and requirements continue to be met. Exelon Generation Company, LLC (Exelon) has determined that the proposed changes do not require any exemptions or relief from regulatory requirements other than the TSs. The following applicable regulations and regulatory requirements were reviewed in making this determination:

Codes:

10 CFR 50.55a(h), "Protection and Safety Systems," requires compliance with IEEE Std. 603-1991, "IEEE Standard Criteria for Safety Systems for Nuclear Power Generating Stations," and the correction sheet dated January 30, 1995. For nuclear plants with construction permits issued before January 1, 1971, the applicant/licensee may elect to comply instead with the plant-specific licensing basis. For nuclear power plants with construction permits issued between January 1, 1971, and May 13, 1 999, the applicant/licensee may elect to comply with the requirements stated in IEEE Std. 279-1971, "Criteria for Protection Systems for Nuclear Power Generating Stations.~~ Clause 4.4 of IEEE Std. 603-1991 requires identification of the analytical limit associated with each variable. Clause 6.8.1 requires that allowances for uncertainties between the analytical limit and device setpoint be determined using a documented methodology. Clause 3(6) of IEEE 279-1971 requires identification of the levels that, when reached, will necessitate protective action.

10 CFR 50 Appendix A, General Design Criterion (GDC) 13, ~~Instrumentation and control,"

requires, in part, that instrumentation be provided to monitor variables and systems, and that controls are provided to maintain these variables and systems within prescribed operating ranges.

10 CFR 50 Appendix A, GDC 20, "Protection system functions," requires, in part, that the protection system be designed to initiate automatically the operation of appropriate systems, including the reactivity control systems, to assure that specified acceptable fuel design limits are not exceeded as a result of anticipated operational occurrences.

10 CFR 50 Appendix A, GDC 30, "Quality of reactor coolant pressure boundary,.. requires, in part, that means shall be provided for detecting and, to the extent practical, identifying the location of the source of reactor coolant leakage.

Relevant Guidance:

Regulatory Guide 1.1 05, Revision 3, "Setpoints for Safety-Related Instrumentation, u describes a method acceptable to the NRC staff for complying with the NRC's regulations for ensuring that setpoints for safety-related instrumentation are initially within and remain within the TS limits.

The LGS design complies with the intent of this regulatory guide. LGS UFSAR Section 1.8 states:

"Although this guide [RG 1.1 05, Revision 1, November 1976] does not apply to LGS except for the ARCS [Redundant Reactivity Control System] (being for plants whose construction permit applications are docketed after Dec. 15, 1976), LGS will be in conformance during operation as discussed in LGS UFSAR Section 7.1.2.5 and Chapter 16.

11

Evaluation of Proposed Technical Specification Changes LGS Section 7.1 states, in part:

Page 8 of 13

.. The nominal trip setpoint and allowable value for Limiting Safety System Settings are contained in the Technical Specifications. These parameters are determined based on the appropriate combination of engineering judgment, historical practice, and allowances for instrument performance. The setpoints are within the operating capability of the associated instruments. The established setpoints provide sufficient margin to satisfy both safety requirements, and plant availability objectives.~~

LGS Chapter 16 contains the proposed final LGS Technical Specifications, which contain the actual trip setpoints and the allowable values for the subject LDS instrument loops.

RIS 2006-17, 11NRC Staff Position on the Requirements of 10 CFR 50.36, 'Technical Specifications,' regarding Limiting Safety System Settings during Periodic Testing and Calibration of Instrumentation Channels,.. presents an approach, found acceptable to the NRC staff, for addressing these issues for use in licensing actions that require prior NRC staff approval.

The setpoint changes contained in this submittal are not found in the Technical Specification Task Force (TSTF)-493 (Reference 13) Attachment A list of Limiting Safety System Setpoints (LSSS) for NUREG 1433, Boiling Water Reactors I 4 Plants and, therefore, are not required to contain the as-found and as-left tolerance footnotes contained in TSTF-493 to TS Table 3.3.3.2.

NUREG 800 Standard Review Plan (SAP) 1 0.3, Main Steam Supply System (MSSS)

SAP 10.3.1.3.8 states that the MSSS must be designed with the capability to detect and control system leakage and to isolate portions of the system in case of excessive leakage or component malfunctions, but does not establish a specific leakage rate for MSL isolation.

4.2 PRECEDENT Setpoint Changes Two similarly related LGS LOS license amendments involving main steam line temperature isolation trip setpoints were approved in 1995 and 2011 and are summarized below:

A 1995 LGS License Amendment (Reference 14) for the HPCI and RCIC pump rooms substantially increased both the room high temperature and room ventilation high differential temperature isolation setpoints. The HPCI room ventilation high differential temperature isolation setpoint was increased from s 80 degrees F to s 126 degrees F and the A V was increased from s 88 degrees F to s 130.5 degrees F. The associated modification increased the environmental qualification temperature limit for the HPCI and RCIC pump rooms to a temperature where operability of the HPCI and RCIC room coolers was not required to assure operability of safety-related equipment in the HPCI and RCIC pump rooms. A major objective of the setpoint change was to ensure that the steam leak detection system did not prematurely isolate the HPCI or RCIC systems during required operations post-Loss of Coolant Accident (LOCA).

Evaluation of Proposed Technical Specification Changes Page 9 of 13 A 2011 LGS License Amendment (Reference 6) for the HPCI room delta temperature high isolation trip setpoint and allowable value changes. This license amendment lowered the previous non-conservative TS Table 3.3.2-2, Item 4e, HPCI Equipment Room Delta Temperature High Isolation Trip Setpoint from s 126 degrees F to s 104 degrees F. The corresponding AV was lowered from s 130.5 degrees F to s 108.5 degrees F. The proposed setpoints ensured that a 25-gpm HPCI steam line leak would be isolated on HPCI room high differential (exhaust minus supply) temperature.

Leakage Basis Change for Turbine Enclosure MSL Tunnel Temperature - High Isolation A 1992 Susquehanna License Amendment (Reference 15) for the Leak Detection Function in the Turbine Building Main Steam Tunnel was approved that changed the leakage basis from a 25-gpm leak to a 65-gpm equivalent leak during winter operations. This amendment revised the isolation setpoint from 117 °F to 197 °F. The basis for the change given was to prevent operational transients such as loss of HVAC or small packing leaks from causing a Main Steam Isolation and full power reactor scram.

4.3 NO SIGNIFICANT HAZARDS CONSIDERATION Exelon has evaluated whether or not a significant hazards consideration is involved with the proposed amendment by focusing on the three standards set forth in 10 CFR 50.92, "Issuance of amendment,.. as discussed below:

1.

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

Response: No.

The proposed changes lower the Technical Specification (TS) Leak Detection System (LOS) Reactor Water Cleanup System (RWCS) Heat Exchanger Room Area Temperature, High Pressure Coolant Injection (HPCI) Equipment Room Temperature, and Reactor Core Isolation Cooling (RCIC) Equipment Room Temperature High Isolation Trip Setpoints and Allowable Values. The proposed changes also raise the HPCI and RCIC Pipe Routing Area Temperature High Isolation Setpoints and adjust their Allowable Value bands. These proposed changes do not significantly increase the probability or consequences of an accident previously evaluated. These setpoints provide for system isolations in the event of a postulated 25 gallon per minute (gpm) steam leak to prevent the excessive loss of reactor coolant and the release of significant amounts of radioactive steam and water from the nuclear reactor coolant boundary. The LOS does not provide any automatic trip function for protection against a violation of a reactor core Safety Limit (SL), or a Reactor Coolant System Pressure Safety Limit, during an anticipated operational occurrence (AOO), a normal operational transient, or steady state operation. The LOS monitors for low energy line breaks or leakage.

Therefore, the LOS Setpoint and Allowable Value proposed changes do not increase the probability of an accident previously analyzed. The proposed Setpoint and Allowable Value changes are tabulated below in Table 1.

During the preparation of Revision 4 of the leak detection Calculation -1001, "Compartment Temperature Transients for Steam and Water Leaks," it was noted that setpoints for several steam leak detection instruments had been calculated without proper consideration of the lower building and ventilation temperatures present during winter conditions. As a result, these setpoints had very little margin when considering

Evaluation of Proposed Technical Specification Changes Page 10 of 13 winter conditions. Also, an inconsistency was noted between the HPCI/RCIC pipeway isolation setpoints and the HPCI/RCIC equipment room isolation setpoints. Therefore, Revision 5 of Calculation -1 001 was prepared to address these conditions. As a result of Revision 5 to Calculation -1 001, changes are required to the TS allowable values and instrument setpoints for the high temperature isolation setpoints for the RWCS Area, HPCI/RCIC equipment rooms and the HPCI/RCIC pipe routing areas. The environmental qualification of required equipment in the subject room and pipe routing areas is not affected by the proposed changes to the high temperature isolation trip setpoints. The LOS is a mitigating system for low energy line breaks or leakage. The proposed setpoint change affecting the LOS is bounded by the accident analysis described in the Limerick Updated Final Safety Analysis Report (UFSAR) Section 15.6.4, "Steam System Piping Break Outside Primary Containment... Therefore, the LOS Setpoint and Allowable Value proposed changes do not increase the consequences of an accident previously analyzed.

Table 1 - List of Proposed TS Instrument Changes TS Table Current Proposed Current TS Proposed TS 3.3.2-2 Description TS TS Allowable Allowable Item No.

Setpoint Setpoint Value Value RWCSArea 3.b.

Temperature High s 132 °F s 120 °F s 137 °F s 125 °F (Heat Exchanger Rooms) 4.d.

HPCI Equipment Room = 225 °F

= 180 °F

2! 218 °F,

2! 177 °F, Temperature High s 247 °F s 191 °F 4.f.

HPCI Pipe Routing

= 175 °F

= 180 °F

2! 165 °F,

2! 177 °F, Area Temperature High s 200 °F s 191 °F S.d.

RCIC Equipment Room = 205 °F

= 180 OF

2! 198 °F,

2! 161 °F, Temperature High s 227 °F s 191 °F 5.f.

RCIC Pipe Routing

= 175 °F

= 180 °F

2!165 °F,

2! 161 °F, Area Temperature High s 200 °F s 191 °F Similarly, a change in the leakage design basis for the isolation setpoint for the Turbine Enclosure Main Steam Leak Detection Area Temperature-High from 25 gpm leakage to 35 gpm leakage equivalent (for winter operations) does not involve a significant increase in the probability or consequences of an accident previously analyzed. As noted above, the LOS does not provide any automatic trip function for protection against a violation of a reactor core Safety Limit (SL), or a Reactor Coolant System Pressure Safety Limit, during an anticipated operational occurrence (AOO), a normal operational transient, or steady state operation. The LOS monitors for low energy line breaks or leakage. Therefore, the LOS Setpoint and Allowable Value proposed changes do not increase the probability of an accident previously analyzed. Increasing the allowable leakage from 25 gpm equivalent to 35 gpm equivalent leakage does not significantly increase the consequences of an accident previously evaluated. The design basis for the LOS is bounded by the analysis of the Main Steam Line Break analyzed in UFSAR Section 15.6.4. The High Energy Line Break Analysis and MSLB Dose Evaluation are not impacted by this insignificant increase in total integrated coolant loss. Since the Turbine Enclosure MSL Tunnel Temperature-High TS setpoint of the leak detection system would not be affected by this design basis change, no environmentally qualified equipment would be impacted by this change.

Evaluation of Proposed Technical Specification Changes Page 11 of 13 Therefore, the proposed changes do not involve a significant increase in the probability or consequences of an accident previously evaluated.

2.

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

Response: No.

The proposed changes identified in response to Question 1 above do not create the possibility of a new or different kind of accident from any accident previously evaluated.

The proposed changes do not add or remove equipment. The proposed changes are limited to instrument setpoint changes to existing temperature indicating switches within the LOS and a basis change for the allowable leakage supporting one existing setpoint.

The LOS is a mitigating system; changes to its instrumentation setpoints do not introduce any new accident initiators, nor do they reduce or adversely affect the capabilities of any plant structure, system, or component to perform their safety function.

The physical establishment and setting of the proposed setpoint of the accident mitigation instruments will have no direct impact on the plant's normal operating conditions. The instrumentation is normally in a monitoring mode and does not actively support normal plant operation. No new failure modes are being introduced by the proposed changes and the LOS will continue to be operated in the same manner.

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

3.

Does the proposed amendment involve a significant reduction in a margin of safety?

Response: No.

The proposed changes identified in response to Question 1 above do not involve a significant reduction in a margin of safety. The proposed changes to the trip setpoints will ensure that a 25-gpm leak will be isolated in a more timely manner for subject areas during winter operations. The proposed system isolation TS trip setpoints were selected to provide equivalent margins that ensure the effectiveness of the Steam Leak Detection System isolation system to mitigate the consequences of a 25-gpm leak without compromising the operability of the RWCS, HPCI and RCIC systems. The proposed trip setpoints and proposed allowable value changes maintain adequate margins between these new values and the operating range of the RWCS, HPCI and RCIC systems in order to prevent the inadvertent actuation of the LOS isolation system. The trip Setpoint and the Allowable Value proposed changes are in the same relative instrument ranges; therefore, instrument loop uncertainty and accuracy margins are unchanged. The margin of safety has been increased for more timely isolations during winter operation.

The change to the basis for the LOS system does not represent a significant reduction in the margin of safety. As shown in the response to Question 2 above, the increase in total coolant loss as a result of a change in the leak detection setpoint design basis from 25 gpm to 35 gpm equivalent is insignificant compared to the bounding Main Steam line break. Since the offsite dose consequences are proportional to the lost coolant inventory, the change in setpoint design basis does not involve a significant reduction in a margin of safety.

Evaluation of Proposed Technical Specification Changes Page 12 of 13 Therefore, the proposed changes do not involve a significant reduction in a margin of safety.

Based on the above, Exelon concludes that the proposed amendment does not involve a 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 CONCLUSION

S 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.

6.0 REFERENCES

1.

CONCOIL-FLUD (CFLUD), Version 1.0, 11Thermofluid Dynamics for a System of Interconnected Compartments,.. (Exelon DTSQA Log No. EX0001199)

2.

LGS Calculation -1001, ~~compartment Temperature Transients for Steam and Water Leaks,~~ Revision 5

3.

Limerick Generating Station Updated Final Safety Analysis Report (UFSAR)

Sections 1.8, Conformance to NRC Regulatory Guidelines; 3.6.1.2.1.7, HPCI Steam Supply Line; 5.2.5.2.2.4, RCIC and HPCI Systems Leak Detection; 7.1.2.5, Conformance to Regulatory Guides; 7.6.1.3. Leak Detection System-Instrument and Controls; and 15.6.4, Steam System Piping Break Outside Primary Containment

4.

Exelon Procedure CC-MA-1 03-2001, Revision 2, usetpoint Methodology for Peach Bottom Atomic Power Station and Limerick Generating Station~~

5.

NEDC-31336, Class 3, October 1986, General Electric Company Instrument Setpoint Methodology

6.

NEDC-31336P-A, Class 3, September 1996, GE Instrument Setpoint Methodology

Evaluation of Proposed Technical Specification Changes Page 13 of 13

7.

LGS Technical Specification Amendment Nos.. 202 and 164, Limerick Generating Station, Units 1 and 2 - Issuance of Amendment Re: High Pressure Coolant Injection Equipment Room Delta-Temperature High Isolation Trip Setpoint and Allowable Value Changes (T AC Nos. ME4171 and ME4172), dated May 11, 2011 (ML111101429)

8.

M-171, Revision 17, uumerick Generating Station Units 1&2 Environmental Service Conditions Specification

9.

ST procedure ST-6-107-590-1(2), "Daily Surveillance Log/OPCONS 4, 5"

10.

Calculation LM-0060, 11SBO Analysis for the RCIC and HPCI Pump Rooms"

11.

ANSI/ISA-67.04.01-1987, "Setpoints for Nuclear Safety-Related Instrumentation"

12.

ST-2-025-405-1 [2], NSSSS-NUMAC Steam Leak Detection-Turb Enc Amb T, Outbrd MSIV Amb T, HPCI Amb T, and HPCI dT-Division 2 Calibration/Functional Test (TIS-025-1018) [TIS-025-2018], ST-2-025-407-1 [2], NSSSS-NUMAC Steam Leak Detection-Turb Enc Amb T, Turbine Encl dT, Outbrd MSIV Amb T, RWCU Amb T, RWCU dT, HPCI Amb T, and HPCI dT-Division 4 Calibration/Functional Test (TIS-025-101 D) [TIS-025-201 D]

13.

Technical Specification Task Force (TSTF)-493, Rev. 4,.. Clarify Application of Setpoint Methodology for LSSS Functions," dated July 31, 2009

14.

LGS Technical Specification Amendment Nos. 85 and 46, Steam Leakage Detection System Setpoints, Limerick Generating Station, Units 1 and 2, dated January 20, 1995 (ML011560074)

15.

License Amendments Nos. 119 and 87, Isolation Setpoint for the Leak Detection Temperature Function in the Turbine Building Main Steam Tunnel, Susquehanna Steam Electric Station, Units 1 and 2 (TAC NOS. M80222 and M80223), dated May 21, 1992 (ML010120213)

ATTACHMENT2 PROPOSED TECHNICAL SPECIFICATION MARKED-UP PAGES (Units 1 and 2)

Pages 3/4 3-19, 20 (For Information only)

Page 3/4 3-22

(Continued)

ISOLATION ACTUATION INSTRUMENTATION SETPOINTS TRIP FUNCTION

3.

REACTOR WATER CLEANUP SYSTEM ISOLATION

a.

b.

c.

d.

e.

f.

RWCS ~ Flow - High RWCS Area Temperature - High RWCS Area Ventilation

~Temperature - High SLCS Initiation Reactor Vessel Water Level -

Low, Low, - Level 2 Manual Initiation

4.

HIGH PRESSURE COOLANT INJECTION SYSTEM ISOLATION

a.

b.

c.

d.

e.

f.

g.

h.

HPCI Steam Line ~ Pressure - High HPCI Steam Supply Pressure Low HPCI Turbine Exhaust Diaphragm Pressure - High HPCI Equipment Room Temperature - High HPCI Equipment Room

~ Temperature - High HPCI Pipe Routing Area Temperature - High Manual Initiation HPCI Steam Line ~ Pressure - Timer LIMERICK - UNIT 1 TRIP SETPOINT

54.9 gpm s l55'F or s~~

N.A.

-38 inches

• N.A.

100 psig

10 psig

~

~o:F)

N.A.

3 :::; t s 12.5 seconds 3/4 3-19 Amendment No.

s

.2

-45 inches

.A.

$ 984"

90 psig s 20 psig 2.5

::; t

13 seconds

TRIP FUNCTION

5.

REACTOR CORE ISOLATION COOLING SYSTEM ISOLATION

a.

b.

c.

d.

e.

f.

g.

h.

RCIC Steam Line ~

Pressure - High RCIC Steam Supply Pressure - Low RCIC Turbine Exhaust Diaphragm Pressure - High RCIC pment Room Temperature - High RCIC Equipment Room A Temperature High RCIC Pipe Routing Area Temperature - High Manual Initiation RCIC Steam Line A Pressure Timer LIMERICK - UNIT 1 ALLOWABLE

$ 381"

64.5 psig

56.5 g

s 10.0 psig

$ 20.0 g

~

~

N.A.

3 s t s 12.5 seconds 2.5 s t s 13 seconas 3/4 3 20 Amendment No. JJ,

TABLE 3.3.2-2 (Continued)

ISOLATION ACTUATION INSTRUMENTATION SETPOINTS TRIP FUNCTION

7.

SECONDARY CONTAINMENT ISOLATION

a.

Reactor Vessel Water Level Low, Low - Level 2

b.

Drywell Pressure High c.1.

Refueling Area Unit 1 Ventilation Exhaust Duct Radiation - High

2.

Refueling Area Unit 2 Ventilation Exhause Duct Radiation - High

d.

Reactor Enclosure Ventilation Exhaust Duct Radiation High

e.

Deleted

f.

Deleted

g.

h.

Reactor Enclosure Manual Initiation Refueling Area Manual Initiation

• See Bases Figure B 3/4 3-1.

TRIP SETPOINT 2 -38 inches*

1.68 psig

2.0 mR/h

2.0 mR/h

1. 35 mR/h N.A.

N.A.

ALLOWABLE 2 -45 inches

1.88 ig

2.2

2.2

.5 N.A.

N **

• • The low setpoints are for the RWCU Heat Exchanger Rooms; the high setpoints are for the pump rooms.

LIMERICK - UNIT 1 3/4 3-22 Amendment No. ~' ~' 12

Continued)

TRIP FUNCTION ISOLATION ACTUATION INSTRUMENTATION SETPOINTS TRIP SETPOINT

3.

a.

RWCS 8 Flow - High

b.

RWCS Area Temperature High

c.

RWCS Area Ventilation

~ Temperature High

d.

SLCS Initiation

e.

Reactor Water Level Low, Low, - Level 2

f.

Manual Initiation

4.

HIGH PRESSURE COOLANT INJECTION SYSTEM ISOLATION

a.

b.

c.

d.

e.

f.

g.

h.

HPCI Steam Line~ Pressure - High HPCI Steam Supply Pressure Low HPCI Turbine Exhaust Diaphragm Pressure - High HPCI Equipment Room Temperature - High HPCI Equipment Room 8 Temperature High HPCI Pipe Routing Area Temperature High Manual Initiation HPCI Steam Line 8 Pressure - Timer LIMERICK - UNIT 2

54.9 gpm

For,;;Ea F or s F**

N.A.

2: -38 inches

• N.A.

psig 5 10 psig E:!i~

104°F

~

N.A.

3 5 t::: 12.5 seconds 3-19

.2 5

s F or :s;

.A.

2:

nches N.A.

2: 90 g

g

108.

F 2.55t5 seconds

5.

REACTOR CORE ISOLATION COOLING SYSTEM ISOLATION

a.

b.

c.

d.

e.

f.

g.

h.

RCIC Steam Line 6 Pressure - High RCIC Steam Supply Pressure - Low RCIC Turbine Exhaust Diaphragm Pressure - High RCIC Equipment Room Temperature High RCIC Equipment Room a Temperature High RCIC Pipe Routing Area Temperature - High Manual Ini ti ati on RCIC Steam Line d Pressure Timer LIMERICK UNIT 2 ALLOWABLE TRIP SETPOINT

~ 381 2: 64.5 psig 2: 56.5 psig

~ 10.0 psig

~ 20.0 psig

~

~ 109°F

~

N.A.

3 ~ 1 5 12.5 seconds 2.5 51 5 13 seconds 3/4 3-20 Amendment

.4&, e

TRIP FUNCTION

7.

SECONDARY CONTAINMENT ISOLATION

a.

Reactor Vessel Water Level -

Low, Low Level 2

b.

Drywell Pressure - High c.l.

Refueling Area Unit 1 Ventil on

d.

Exhaust Duct Radiation - High

2.

Refueling Area Unit 2 Ventilation Exhaust Duct Radiation High Reactor osure Ventil on Exhaust Duct Radiation - High

e.

Deleted

f.

eted

g.

h.

Reactor Enclosure Manual Initiation Refueling Area Manual Initiation

• See Bases Figure B 3/4 3 1.

(Conti 2:

38 inches*

2: -45

1. 68 psi g

1.88 g

2.0 mR/h

=:: 2.2 mR/h

=:: 2.0 mR/h

2.2

=:: 1.35 mR/h

< 1.5 h

N.A.

N.A.

N.A.

N.A.

• • The low setpoints are for the RWCU Heat Exchanger Rooms; the high setpoints are for the pump rooms.

LIMERICK - UNIT 2 3/4 Amendment

ATTACHMENT 3 CALCULATION -1001 STEAM LEAK ROOM TEMPERATURE RESPONSE GRAPHS

7.7 RWCU Regenerative HX Room Starting at 65°F Maximum Ventilation Differential Temperature:

dT = 173.4 °F - 65°F = 108.4°F 50.00 70.00 90.00 110.00 130.00 150.00 170.00 0.00 0.50 1.00 1.50 2.00 2.50 3.00 Temp (°F)

Time (hr)

Temperature Response of RWCU Regen. Heat Exchanger Room to Steam Leaks 65° Starting Temp Reactor Building Temp RWCU Regen HX Room - 25 GPM RWCU Regen HX Room - 7 GPM 173.4 F 116.7 F 65 F

7.8 RWCU Regenerative HX Room Starting at 114°F Maximum Ventilation Differential Temperature:

dT = 177.3 °F - 98.5°F = 78.8°F Temperature Response of RWCU Regen. Heat Exchanger Room to Steam Leaks 114°F Starting Temp.

80.0 100.0 120.0 140.0 160.0 180.0 200.0 0.00 0.50 1.00 1.50 2.00 2.50 3.00 Time (hr)

Temp (°F)

Reactor Building Temp RWCU Regen HX Room - 25 GPM RWCU Regen HX Room - 5 GPM 177.3°F 125.0°F 98.5°F

7.9 RWCU Non-Regenerative HX Room-Starting at 65°F Maximum Ventilation Differential Temperature:

dT = 133.3 °F - 65°F = 68.3°F 50.00 60.00 70.00 80.00 90.00 100.00 110.00 120.00 130.00 140.00 0.00 0.50 1.00 1.50 2.00 2.50 3.00 Temp (°F)

Time (hr)

Temperature Response of RWCU NonRegen HX Room to Steam Leaks Starting at 65°F Reactor Building Temp RWCU NonRegen HX Room - 25 GPM RWCU NonRegen HX Room - 17 GPM 65 F 117.3 F 133.3 F

7.10 RWCU Non-Regenerative HX Room-Starting at 112.6°F Maximum Ventilation Differential Temperature:

dT = 145.0 °F - 98.5°F = 46.5°F 90.00 100.00 110.00 120.00 130.00 140.00 150.00 0.00 0.50 1.00 1.50 2.00 2.50 3.00 Temp (°F)

Time (hr)

Temperature Response of RWCU Non-Regen HX room to Steam Leaks - Starting at 112.6°F Reactor Building Temp RWCU NonRegen HX Room - 25 GPM RWCU NonRegen HX Room - 8 GPM 98.5 F 117.3 F 145.0 F

7.11 HPCI Pump Room Starting at 65°F Maximum Ventilation Differential Temperature:

dT = 199.5 °F - 65°F = 134.5°F Response of HPCI Pump Room to Steam Leak (Starting Room Temp = 65°F) 0.0 50.0 100.0 150.0 200.0 250.0 0.00 0.20 0.40 0.60 0.80 1.00 Time (hr)

Temp (°F)

HPCI Pump Room (5gpm leak)

Reactor Building Supply Temp HPCI Pump Room (25gpm leak)

HPCI Pump Room ( 11 gpm leak)

Max. Temp. = 199.5°F Max. Temp. = 99.5°F

• Max. Temp. = 65°F

• Actual max. temp for the 5 gpm leak will be 105°F. The analysis behind this value assumed the Unit Cooler running at start. The coolers actually start at 105°F.

Max. temp = 127.7°F

7.12 HPCI Pump Room Starting at 120°F Maximum Ventilation Differential Temperature:

dT = 211.5 °F - 98.5°F =113.0°F Response of HPCI Pump Room Temperature to Steam Leaks (120°F Starting Room Temp.)

90.0 110.0 130.0 150.0 170.0 190.0 210.0 0.00 0.20 0.40 0.60 0.80 1.00 1.20 Time (hr)

Temp (°F)

HPCI Pump Room Temp (5 gpm leak)

RB Air Inlet temp HPCI Pump Room Temp (25 gpm leak)

Max. Temp = 211.5°F Max. Temp. = 98.5°F Max. Temp. = 132.7°F

7.13 RCIC Pump Room Starting at 65°F Maximum Ventilation Differential Temperature:

dT = 221.3 °F - 65°F = 156.3°F Temperature Response of RCIC Pump Room to Steam Leaks (Starting Room temp = 65°F) 0.00 50.00 100.00 150.00 200.00 250.00 0.0 0.2 0.4 0.6 0.8 1.0 1.2 Time (hr)

Temp (°F)

RCIC temp (25 gpm leak)

RB Temp RCIC temp (25 gpm leak)

RCIC Temp (6 gpm Leak)

Max Temp = 221.3° Max Temp = 117.1°F Max Temp = 65°F Max. Temp = 126.4°F

7.14 RCIC Pump Room Starting at 120°F Maximum Ventilation Differential Temperature:

dT = 229.5 °F - 95°F = 134.5°F 0.00 50.00 100.00 150.00 200.00 250.00 0.00 0.20 0.40 0.60 0.80 1.00 1.20 Temp (°F)

Time (hr)

Response of RCIC Pump Room Temperature to Steam Leaks (Starting Room Temp = 120°)

RCIC Temp (5 gpm leak)

Reactor Building HVAC Supply RCIC Temp (25 gpm leak)

Max. Temp. = 229.9 F Max. Temp. = 154.8 F Max. Temp. = 98.6 F

7.15 Main Steam Tunnel - Turbine Building Starting at 65°F Temperature Response to Steam Leaks - Turbine Enclosure Main Steam Tunnel-Turbine Buildiing Starting at 65°F (Winter Conditions) 40 60 80 100 120 140 160 180 0

1 2

3 4

5 6

Time (hr)

Temperature (°F)

Turbine Bldg Temperature Turbine Enclosure Main Steam Tunnel Temperature - 25 gpm Leak Turbine Enclosure Main Steam Tunnel Temperature - 11 gpm Leak 65°F 142.2°F 167.3°F

7.16 Main Steam Tunnel - Turbine Building Starting at 122°F Temperature Response of Turbine Enclosure - Main Steam Tunnel to Steam Leaks Turbine Building Starting at 125°F (Summer Conditions) 100 110 120 130 140 150 160 170 180 190 200 0

1 2

3 4

5 6

Time (hr)

Temp (°F)

Turbine Bldg Temperature Turbine Enclosure Main Steam Tunnel Temperature - 25 gpm Leak Turbine Enclosure Main Steam Tunnel Temperature - 7 gpm Leak 188.4°F 144.1°F 125°F

ATTACHMENT 4 INSTRUMENT LOOP UNCERTAINTY CALCULATIONS FOR TE-044-1 N016A, TE-055-1 N0308, TE-055-1 N025B, TE-049-1 N023A and TE-049-1 N025A

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 1 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 TABLE OF CONTENTS SECTION 1.0 PURPOSE 2.0 DESIGN BASIS 3.0 ASSUMPTIONS

4.0 REFERENCES

5.0 ATTACHMENTS 6.0 ANALYSIS 7.0 RESULTS Support Data Sheet Attachments Loop Uncertainty Session Data Calculation Results Loop Data and Configuration Loop Calibration Data Instrument Data Vendor Data Location Data Process Concerns Device Dependencies

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 2 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 1.0 PURPOSE This section includes the Objective, Limitations, Conclusions, and the Applicability Statement of this calculation.

1.1 Objective The purpose of this calculation is to determine the Allowable Value (AV), Nominal Trip Setpoint (NTSP) and Actual Trip Setpoint (ATSP) for the high temperature steam source isolation generated by the Leak Detection System at the Limerick Generating Station (LGS). The increasing temperature signals are sensed by channel "A" of the Reactor Water Cleanup (RWCU) Heat Exchanger room Leak Detection Instrument, TE-044-1N016A.

This calculation is performed utilizing environmental conditions for a High Energy Line Break (HELB) accident scenario.

A summary of the calculation results may be found in Section 7.0 of this calculation.

Other redundant/mirror loops for which the results of this calculation are applicable may be found in Section 1.4, Applicability.

1.2 Limitations This calculation is produced utilizing the harsh environmental conditions for a HELB accident scenario (See Section 2.2.5).

The appropriate use of this calculation to support design or station activities, other than those specified in Section 1.1 of this calculation, is the responsibility of the user.

1.3 Conclusions An analysis of the proposed Technical Specification revised process setpoint values in relation to the results of this calculation has been performed and it has been concluded that the results of this calculation supports the proposed Technical Specification setpoint values.

An Insulation Resistance (IR) Calculation for TE-055-1N028B Configuration 01 determined that the IR error associated with this instrument loop was insignificant (< 0.001% of loop span).

It was therefore concluded that no IR effects would be included in this calculation. This IR Calculation resides in the IISCP software and is utilized as further justification for the position taken by Exelon previously that IR concerns do not have any adverse effects on system operability at LGS. The IR calculation for TE-055-1N028B is considered to be bounding for all thermocouple applications at LGS.

The environmental conditions for the locations of the temperature elements for the redundant/mirror loops are the same/equivalent

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 3 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 or not as harsh as those specified for the temperature element for this loop. Since the variables in this calculation are the same/equivalent or more restrictive, this calculation is valid for the redundant/mirror loops listed in Section 1.4.

1.4 Applicability A data evaluation has been performed in order to determine which, if any, redundant/mirror instrument loops are bound by the results of this calculation (the "base" calculation). The data evaluation results validate that this "base" calculation is applicable to the following Loop Affiliation Numbers:

• TE-044-1N016D Configuration 01

• TE-044-1N016E Configuration 01 TE-044-1N016H Configuration 01 TE-044-1N016J Configuration 01 TE-044-1N016M Configuration 01

• TE-044-2N016A Configuration 01 TE-044-2N016D Configuration 01

• TE-044-2N016E Configuration 01 TE-044-2N016H Configuration 01 TE-044-2N016J Configuration 01 TE-044-2N016M Configuration 01 The results of this "base" calculation are bounding values for the instrument loops listed above based on such factors as instrument manufacturer and model number, instrument location environmental parameters, and actual installation and use of the instrument in the measurement of the process variable. The same instruments are utilized to provide the high differential and the high ambient isolation functions. Therefore, the calculated uncertainties apply to both Allowable Values and Trip/Isolation setpoints.

The only difference among the eleven redundant/mirror loops is the difference in environmental data for each loop due to the physical locations of each thermocouple, which does not introduce any additional uncertainty.

2.0 DESIGN BASIS This section includes the Technical Background and Design Input information relevant to this calculation.

2.1 Technical Background The purpose of this part of the leak detection system is to isolate the RWCU system components and isolate the system should a leak of sufficient magnitude (> 5 but

< 25 GPM) occur.

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 4 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 High temperature in the equipment room areas of the RWCU system could indicate a breach of the RCPB portion of the RWCU system. High ambient temperature in the Heat Exchanger room initiates isolation of the RWCU system.

Six ambient temperature circuits monitor the RWCU system Heat Exchanger area temperatures. When a significant increase in RWCU system Heat Exchanger area ambient temperature is detected, trip signals are transmitted to the Primary Containment/Reactor Vessel Isolation Control System (PCRVICS). The PCRVICS initiates closure of all RWCU system isolation valves.

Two independent instrument trip channels are provided to ensure protective action when required. The output trip signal of each instrumentation channel initiates a logic channel and closure of either the inboard or outboard RWCU system isolation valve. In order to close both the inboard and outboard isolation valves, both logic channels must trip. Protection against inadvertent isolation due to instrumentation malfunction is neither required nor provided.

2.2 Design Input 2.2.1 Calculation -1001 Revision 5 (Ref. 4.7) supersedes calculation MISC-022 in its entirety and forms the basis for the analytical limit for all steam leak detection alarm and isolation setpoints.

The calculation provides the calculated maximum temperature or different temperatures for summer and winter conditions and recommends the analytical limit for isolation setpoint based on the minimum of these two values. For RWCU Heat Exchanger Room High Temperature Isolation Setpoint, the analytical limit was recommended to be 128 DEGF.

2.2.2 Additional margin of 4.36116 DEGF was added to this calculation to support the ATSP of 120 DEGF. Of this 4.36116 DEGF, 3.00000 DEGF is assigned margin to support the IISCP Loop Leave Alone Zone (LAZ) guidelines as discussed in Section 2.2.5 and to account for the calibration practices of the instrument channels.

The remaining 1.36116 DEGF is unassigned margin which represents additional conservatism that may be utilized in future analyses.

The calibration practices of the instrument channels are accounted for by providing additional margin for M&TE beyond that in Section 6.2.2. This is done to provide 1% to account for the setting tolerance of the TIS. This also provides additional margin beyond that portion allocated in Section 6.2.1 to cover the 1% required accuracy for the TE. Setting Tolerance is not provided specifically for the TE since it is not calibratable.

2.2.3 Based on engineering judgment, S1 has been included as a process consideration. This consideration results in a conservatively rounded Allowable Value that supports the current Technical Specification revision request.

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 5 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 2.2.4 The selection of HELB environmental conditions for the performance of this calculation is based on engineering judgment and system knowledge. The environmental conditions for a HELB accident scenario are the most severe conditions to which the thermocouple sensors may be exposed and still be expected to perform their safety function.

2.2.5 The delta between the Allowable Value and the Actual Trip Set Point within this calculation is 5.00066 DEGF which meets or exceeds the IISCP Program Guidance of equal to or greater than 1.5 times the loop LAZ (Ref. 4.10) 2.2.6 All other design inputs to this calculation are documented on the Supporting Data Sheet Attachments.

3.0 ASSUMPTIONS 3.1 Assumptions Not Requiring Confirmation 3.1.1 None 3.2 Assumptions Requiring Confirmation 3.2.1 None

4.0 REFERENCES

4.1 Limerick Generating Station Updated Final Safety Analysis Report (UFSAR), Revision 16 (dated September 2012)

Section 5.2.5.2.2 - Detection of Abnormal Leakage Outside the Primary Containment; Section 7.6.1.3 - Leak Detection System - Instrumentation and Controls; 4.2 Limerick Generating Station Technical Specifications, Unit 1, Amendment 202, Revision 208 and Unit 2, Amendment 164, Revision 169 Table 3.3.2-2 Item 3.b** (for Heat Exchanger Room) 4.3 M-171, Revision 0017, Limerick Generating Station Units 1&2 Environmental Service Conditions Specification (Location Data reference).

4.4 IISCP-LG-CALSHEET Limerick Generating Station Instrument Setpoint Control Program - Calsheet.

4.5 Component Records List (PIMS CRL)

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 6 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 4.6 General Electric Design Specification Data Sheets (DSDS) A61-4040-L-004, Revision 0005 (Design Basis Reference).

4.7 Calculation -1001 Revision 0005 "Compartment Temperature Transients for Steam and Water Leaks" (Analytical Limit Reference).

4.8 Calculation LE-0036 Revision 0001 "Equivalency Evaluation between G.E. Numac LDM and Riley Temperature Instrumentation to demonstrate Accuracy and Support the use of existing Setpoints for the Steam Leak Detection System, LGS Units 1 and 2" (Vendor Information Reference) 4.9 EQ Binder P-300 Revision 0008 "Pyco Temperature Elements" (Vendor Information Reference) 4.10 CC-MA-103-2001 Revision 2 "Setpoint Methodology for PBAPS & LGS" 4.11 ECR LG 10-00191 Revision 000 "Margin Improvement Needed in Steam Leak Detection Tech Spec" 4.12 ECR LG 12-00344 Revision 000 "Margin Improvement Needed in Steam Leak Detection Tech Spec" 5.0 ATTACHMENTS 5.1 See Supporting Data Sheet Attachments located within this calculation.

6.0 ANALYSIS 6.1 Loop Effects 6.1.1 Loop ID No.: TE-044-1N016A Configuration: 01 6.1.2 Loop Function: SETPOINT INFORMATION CONTAINED IN CALC LE-0065 REV 0000 6.1.3 Configuration

Description:

HI TEMP TRIP 6.1.4 Loop Instrument List Device ID Number Function Number 1 TE-044-1N016A IO 0 2 TIS-025-101A S 0 6.1.5 Device Dependency Device Environment Power Calibration Radiation 1 X X X X 2 O O O O 6.1.6 Device Dependency References Environmental:

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 7 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 Power:

Calibration:

Radiation:

6.1.7 PMA and PEA Effects Type Magnitude A/N Sign PMA PEA IR A

References PMA:

PEA:

IR:

6.1.8 Miscellaneous Random and Bias Effects Dependent Dependent Type Magnitude Instrument Uncertainty A/N Sign S1 0.00341 N

R S2 S3 R1 R2 R3 References S1:

SEE SECTION 2.2.4 S2:

S3:

R1:

R2:

R3:

6.1.9 Basis Point of Interest:

120.0000 Accident:

HELB Pressure Effects:

Independent 6.2 Device Effects 6.2.1 Device Accuracy (CA)

CA = va/S or Setting Tolerance (whichever is greater)

Where:

va

= vendors stated accuracy S

= instruments calibrated span R

= instruments range 6.2.1.1 TE-044-1N016A va = 0.75%*S*0.66 S = 300 R = 3.500e+002 Setting tolerance = 0.00000 CA = 0.00495 6.2.1.2 TIS-025-101A

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 8 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 va = 1.0%*S*0.66 S = 300 R = 3.500e+002 Setting tolerance = 0.00000 CA = 0.00660 6.2.2 Device M&TE Allowance MTE = CA + margin Where:

CA

= device calibration accuracy margin = additional margin supplied by calculation originator 6.2.2.1 TE-044-1N016A CA = 0.00495 Margin = 0.00000 MTE = 0.00495 6.2.2.2 TIS-025-101A CA = 0.00660 Margin = 0.00000 MTE = 0.00660 6.2.3 Device Drift D = vd * ( (tc

• 1.25 / td) ) / s Where:

vd

= vendors stated drift specification td

= vendors drift time specification tc

= instruments calibration period S

= instruments calibrated span R

= instruments range 6.2.3.1 TE-044-1N016A vd = 0.0 td = 1.0 tc = 731 S = 300 R = 3.500e+002 D = 0.00000 6.2.3.2 TIS-025-101A vd = 0.233%*S*0.66 td = 31.

tc = 731 S = 300 R = 3.500e+002 D = 0.00835 6.2.4 Device Static Pressure SPE = (SPz 2 + SPs

2)

(for independent pressure effects)

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 9 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 SPE = SPz + SPs (for dependent pressure effects)

SPz = SPz

• lPo - Pcl / S SPs = SPs

• lPo - Pcl / S Where:

SPz

= vendors stated zero static pressure effect SPs

= vendors stated span static pressure effect Po

= normal operating pressure Pc

= calibrated pressure S

= instruments calibrated span R

= instruments range Note: Static pressure effects are relevant to sensors only.

6.2.4.1 TE-044-1N016A SPS = 0.0 SPZ = 0.0 Po = 0.00 Pc = 0.00000 S = 300 R = 3.500e+002 SPs = 0.00000 SPz = 0.00000 SPE = 0.00000 6.2.4.2 TIS-025-101A Sensor is not 'Y' (see attachment 9).

6.2.5 Device Over Pressure OPE = vope

• lPa - Pml / S (for linear devices)

OPE = vope / S (for non-linear devices)

Where:

vope = vendors stated over pressure effect Pa

= maximum operating pressure Pm

= instruments design pressure S

= instruments calibrated span R

= instruments range X

= lPa - Pml Note: Over pressure effects are relevant to sensors only, where the maximum operating pressure is greater than instruments design pressure.

6.2.5.1 TE-044-1N016A vope = 0.0 Pa = 0.00 Pm = 0.00 S = 300 R = 3.500e+002 OPE = 0.00000 6.2.5.2 TIS-025-101A Sensor is not 'Y' (see attachment 9).

6.2.6 Device Drift Temperature

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 10 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 DTE = vte

• dT / S (for linear devices)

DTE = vte / S (for non-linear devices)

Where:

vte

= vendor specified temperature effect dT

= (Normal Temp - 68 F)

S

= instruments calibrated span R

= instruments range 6.2.6.1 TE-044-1N016A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 114.00 DTE = 0.00000 6.2.6.2 TIS-025-101A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 82.00 DTE = 0.00000 6.2.7 Device Accuracy Temperature ATE = vte

• dT / S (for linear devices)

ATE = vte / S (for non-linear devices)

Where:

vte

= vendor specified temperature effect dT

= laccident temperature - normal temperaturel S

= instruments calibrated span R

= instruments range 6.2.7.1 TE-044-1N016A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 114.00 Accident temp = 220.21 ATE = 0.00000 6.2.7.2 TIS-025-101A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 82.00 Accident temp = 82.00 ATE = 0.00000 6.2.8 Device Humidity HE = dH

• vhe / S (for linear devices)

HE = vhe / S (for non-linear devices)

Where:

vhe

= vendors stated humidity specification

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 11 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 S

= instruments calibrated span R

= instruments range dH

= laccident humidity - normal humidityl 6.2.8.1 TE-044-1N016A vhe = 0.0 S = 300 R = 3.500e+002 Accident hum = 100.00 Normal hum = 90.00 HE = 0.00000 6.2.8.2 TIS-025-101A vhe = 0.0 S = 300 R = 3.500e+002 Accident hum = 90.00 Normal hum = 90.00 HE = 0.00000 6.2.9 Device Accuracy Radiation ARE = vre

• DeltaRad / S (for linear devices)

ARE = vre / S (for non-linear devices)

Where:

vre

= vendor specified radiation effect DeltaRad

= (accident radiation - normal radiation)

S

= instruments calibrated span R

= instruments range 6.2.9.1 TE-044-1N016A vre = 0.0 S = 300 R = 3.500e+002 Accident rad = 1.33000 Normal rad = 1.26000 ARE = 0.00000 6.2.9.2 TIS-025-101A Environmental qualifier is not 'Y' (see attachment 5).

6.2.10 Device Seismic VSE = SRS

• vse / S (for linear devices)

VSE = vse / S (for non-linear devices)

Where:

vse

= vendors stated seismic specification S

= instruments calibrated span R

= instruments range SRS

= seismic response envelope 6.2.10.1 TE-044-1N016A Seismic class is not '1' in Pims (see attachment 5).

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 12 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 6.2.10.2 TIS-025-101A Seismic class is not '1' in Pims (see attachment 5).

6.2.11 Device Power PSE = pss

• pse / S Where:

pse

= vendors stated power supply specification pss

= device power supply stability S

= instruments calibrated span R

= instruments range 6.2.11.1 TE-044-1N016A pse = 0.0 S = 300 R = 3.500e+002 pss = 0.000 PSE = 0.00000 6.2.11.2 TIS-025-101A pse = 0.0 S = 300 R = 3.500e+002 pss = 12.000 PSE = 0.00000 7.0 RESULTS 7.1 Loop Accuracy Allowance (AL)

AL_norm

= A + OP + SP + PE AL_accid

= AL_norm + S (for S > TE + RE + AHE)

AL_accid

= AL_norm + TE + RE + AHE (for S TE + RE + AHE)

Where:

A

= CA 2

TE

= ATE 2

OP

= OPE 2

SP

= SPE 2

RE

= ARE 2

AHE

= HE 2

S

= VSE 2

PE

= PSE 2

AL

= 0.00007 7.2 Loop Drift Allowance (DL)

DL = DE + DT Where:

DE

= D 2

DT

= DTE 2

DL

= 0.00007

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 13 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 7.3 Loop Calibration Allowance (CL)

CL = V + M Where:

V

= (setting tolerance) 2 M

= MTE 2

CL

= 0.00007 7.4 TLU (Positive)TLUp = [IR + PMAp + PEAp + PCp + PMAo + PEAo + Pco +

(AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span (Negative)TLUn = [- PMAn - PEAn - PCn - PMAo - PEAo - PCo + -

(AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span All other variables as previous defined.

TLUp = 4.42412 DEGF TLUn = -4.42412 DEGF 7.5 NTSP (Increasing) NTSP = limit + [- PMAn - PEAn - PCn - PMAo - PEAo - PCo +

(1.645 / sigma) * - (AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span (Decreasing) NTSP = limit + [IR + PMAp + PEAp + PCp + PMAo + PEAo + PCo

+ (1.645 / sigma) * (AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span Where:

limit = loop analytical or process limit limit = 128.00 DEGF sigma = 2 NTSP = 124.36116 DEGF 7.6 ATSP (Increasing) ATSP = NTSP + margin (Decreasing) ATSP = NTSP - margin Where:

margin = additional margin supplied by calculation originator margin = -4.36116 ATSP = 120.00000 DEGF 7.7 Allowable Value (Decreasing) AV = limit + [IR + PMAp + PEAp + PCp + PMAo + PEAo + Pco +

(1.645 / sigma) * (AL + CL + PMAr + PEAr + PCr) ]

• Loop span (Increasing) AV = limit + [- PMAn - PEAn - PCn - PMAo - PEAo - Pco +

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 14 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 (1.645 / sigma) * - (AL + CL + PMAr + PEAr + PCr) ]

• Loop span All other variables as previously defined.

AV = 125.00066 DEGF

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 15 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 1: Session Data Station: LG Unit: 1 Responsible Branch: LEDE Safety Related (Y/N): Y

==

Description:==

STEAM LEAK DETECTION - RWCS AREA TEMPERATURE - HIGH System Number: 044 Structure: RX ENCL Component: TIS-025-101A Revision

Description:

INITIAL REVISION TO SUPPORT AL CHANGE PER -1001 Vendor Calc Number: N/A Revision: NA Other Calculations: N Provides info TO:

Receives info FROM:

-1001 LE-036 LE-065 Supercedes:

N/A

1. Accident type:

HELB

2. Pressure effects dependent or independent (I/D):

Independent

3. Process increasing, decreasing or neither (I/D/N):

Increasing

4. Input point of interest:

120.0000

5. Include additional margin for actual setpoint calculation:

Yes

6. Additional margin to be used:

-4.36116

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 16 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13

Calculation Results Temperature Device F N Accuracy Normal Accident Humidity Tol Pwr Supp TE-044-1N016A IO 0 0.00495 0.00000 0.00000 0.00000 0.00000 0.00000 TIS-025-101A S 0 0.00660 0.00000 0.00000 0.00000 0.00000 0.00000 Device F N SPE Rad Acc M&TE Drift Ovr Pres Seismic TE-044-1N016A IO 0 0.00000 0.00000 0.00495 0.00000 0.00000 N/A TIS-025-101A S 0 N/A N/A 0.00660 0.00835 N/A N/A Process Concerns Normal Accident Positive Negative Offsetting Positive Negative Offsetting PMA 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 PEA 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 IR 0.00000 Other 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 Loop Results Normal Accident TLU*

4.42412

-4.42412 4.42412

-4.42412 AL 0.00007 0.00007 Increasing Decreasing Increasing Decreasing NTSP*

124.36116 N/A 124.36116 N/A AV*

125.00066 N/A 125.00066 N/A ATSP*

120.00000 N/A 120.00000 N/A Additional Margin: -4.36116 DL: 0.00007 CL: 0.00007

• These values are in DEGF

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 17 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 3: Loop Data Loop Number: TE-044-1N016A Instruments Function Num 1

2 3

4 5

6 7

8 9

10 TE-044-1N016A IO 0

X X

TIS-025-101A S

0 X

TIS-025-101A IO 0

X 0

0 0

0 0

0 0

Configuration Descriptions 1: HI TEMP TRIP 6:

2: TEMP IND 7:

3:

8:

4:

9:

5:

10:

Loop

Description:

SETPOINT INFORMATION CONTAINED IN CALC LE-0065 REV 0000 Originator: SOEURN S Date: 03/08/13 Revision: 1 ATTACHMENT 4: Loop Calibration Data Loop Number: TE-044-1N016A Configuration: 01 Units Min Max Normal Trip Process Temperature 0.00 0.00 0.00 0.00 Process Radiation 0.000e+000 0.000e+000 0.000e+000 0.000e+000 Process Humidity 0.00 0.00 0.00 0.00 Process Pressure 0.00 0.00 0.00 0.00 Loop Span DEGF 50.00 350.00 Sigma: 2 Value Units Value Setpoint 120.00 DEGF Loop Setting Limit 0.000 Reset 0.00 Loop Leave Alone Zone 3.000 Allowable 125 DEGF Loop Calculation Acc 0.000 Design/safety Limit 0.00 Calibration Frequency 731 Analytical/Proc Limit 128.00 DEGF Originator: SOEURN S Date: 03/08/13 Revision: 00

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 18 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 5: Instrument Data Component Id: TE-044-1N016A Facility: LG Unit: 1 System: 025

==

Description:==

RWCU LEAK DET AMBIENT TEMP DIV 1 LEAK DET -- SHOWN ONP&ID 25 Function: IO 0 Type: I E Manufacturer Code: P427 Model #: 102-9039 Location: 015283503 Elevation: 283 Area: 015 Serial #:

QA Class: Q Op Time: 1 Service Life: 000 EQ: Y Seismic Class:

Tech Spec: Y Tech Spec Ref: T3.3.2-2.3.B Transient: NA Reg Guide 1.97: N Power Supply Reg: 0.000 Tolerance: 0.000 Loop Number: TE-044-1N016A Loop Diagram: N/A Computer Address: N/A P&ID: M-0025 Installation Detail: N/A Calibration ST: ST-2-025-404-1 Calibration Proc: ST-2-025-404-1 Functional ST: ST-2-044-602-1 Procedure #: IC-11-00001 Response ST: N/A Other:

Mod Number:

Other:

Signal From: PROCESS Signal To: TIS-025-101A CH A3-1 Mod Rev:

Alarms & Actions: N/A Instruction Book:

Input Min: 50.00 Input Max: 350.00 Input Unit: DEGF Output Min: 0.391 Output Max: 8.064 Output Unit: MVDC HC: 0.000 Setting Tolerance: 0.00000 Leave Alone Zone: 0.01000 HC Corrected:

SP Corrected:

Add. Margin: 0.00000 MTE device Period: 731 MTE Accuracy HC

Reference:

N/A SP

Reference:

N/A Originator: COLLIER KB Date: 04/11/10 Revision: 1

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 19 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 5: Instrument Data Component Id: TIS-025-101A Facility: LG Unit: 1 System: 025

==

Description:==

STEAM LEAK DETECTION TEMP MONITOR DIV. 1/A1 Function: S 0 Type: I S Manufacturer Code: G080 Model #: 304A3714G004 Location: 008289542 Elevation: 289 Area: 008 Serial #:

QA Class: Q Op Time: N/A Service Life: 000 EQ: N Seismic Class:

Tech Spec: Y Tech Spec Ref: T3.3.2-2.5 Transient: NA Reg Guide 1.97: N Power Supply Reg: 120.000 Tolerance: 12.000 Loop Number: SEE REMARKS Loop Diagram: N/A Computer Address: N/A P&ID: M-0025 Installation Detail: N/A Calibration ST: ST-2-025-404-1 Calibration Proc: ST-2-025-404-1 Functional ST: SEE REMARKS Procedure #: IC-11-00001 Response ST: N/A Other:

Mod Number:

Other:

Signal From: SEE REMARKS Signal To: SEE REMARKS Mod Rev:

Alarms & Actions: SEE REMARKS Instruction Book: N-00E-68-00024 (GEK-97146)

Input Min: 50.00 Input Max: 350.00 Input Unit: DEGF Output Min: 0 Output Max: 1 Output Unit:

HC: 0.000 Setting Tolerance: 0.00000 Leave Alone Zone: 0.01000 HC Corrected:

SP Corrected:

Add. Margin: 0.00000 MTE device Period: 731 MTE Accuracy HC

Reference:

N/A SP

Reference:

N/A Originator: SOEURN S Date: 03/06/13 Revision: 7

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 20 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 6: Vendor Data Manufacturer Code: P427 Model #: 102-9039 Function: IO 0

Reference:

REFLECTS 2 SIGMA VALUE (CALC# LE-0065)

Min 5.000e+001 Max 3.500e+002 Units DEGF Pressure 0.00 Accuracy Information Accuracy 0.75%*S*0.66 Seismic 0.0 Temperature 0.0 Radiation 0.0 Over Pressure 0.0 Humidity 0.0 Drift 0.0 Time 1.0 Power Supply 0.0 Pressure Zero 0.0 Pressure Span

0.0 Originator

KINCAID SC Date: 07/06/01 Revision: 00 ATTACHMENT 6: Vendor Data Manufacturer Code: G080 Model #: 304A3714G004 Function: S 0

Reference:

GEK-97146, NE-68-24; REFLECTS 2 SIGMA VALUES (CALC# LE-0036)

Min 5.000e+001 Max 3.500e+002 Units DEGF Pressure 0.00 Accuracy Information Accuracy 1.0%*S*0.66 Seismic 0.0 Temperature 0.0 Radiation 0.0 Over Pressure 0.0 Humidity 0.0 Drift 0.233%*S*0.66 Time

31.

Power Supply 0.0 Pressure Zero 0.0 Pressure Span

0.0 Originator

THOMAS RT Date: 04/18/94 Revision: 00

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 21 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 7: Location Data Location Code: 015283503

==

Description:==

UNIT 1 RWCU SYSTEM REGENERATIVE HTX COMPT Minimum Normal Trip LOCA Trip HELB Trip MSLB Maximum Temp 65.00 114.00 120.00 220.21 220.21 114.00 Radiation 3.610e+00 1.260e+06 1.330e+06 1.330e+06 1.330e+06 1.260e+06 Humidity 50.00 90.00 90.00 100.00 100.00 90.00 Pressure 14.69 14.69 14.70 17.62 17.62 14.69 Seismic Response Envelope: 0.00 Originator: THOMAS RT Date: 05/23/94 Revision: 00 ATTACHMENT 7: Location Data Location Code: 008289542

==

Description:==

ROOM 542, AUXILIARY EQUIPMENT ROOM Minimum Normal Trip LOCA Trip HELB Trip MSLB Maximum Temp 60.00 82.00 82.00 82.00 82.00 82.00 Radiation 5.000e-04 1.760e+02 1.890e+02 1.760e+02 1.760e+02 1.760e+02 Humidity 30.00 90.00 90.00 90.00 90.00 90.00 Pressure 14.70 14.70 14.70 14.70 14.70 14.70 Seismic Response Envelope: 0.00 Originator: CAROLAN JF Date: 03/31/93 Revision: 00

WEINGARD RD04/05/13LOOP UNCERTAINTY CALCULATION Loop Number: TE-044-1N016A 01 Page 22 of 22 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 8: Process Concerns Contribution to Consideration Uncertainty Sign A/N Consideration References 1 PMA Dependent Dependent 2 PEA Device Uncertainty 3 IR A

4 S1 0.00341 R

N SEE SECTION 2.2.4 5 S2 6 S3 7 R1 8 R2 9 R3 ATTACHMENT 9: Device Dependencies Dependency Static Calibration Devices Function Env Pwr Cal Rad Pressure Humid Sensor TE-044-1N016A IO 0

X X

X X

0.00000 90.00 Y

TIS-025-101A S

0 O

O O

O 0.00000 90.00 N

Dependency References Env:

Cal:

Pwr:

Rad:

Cal Condition:

Just:

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 1 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 TABLE OF CONTENTS SECTION 1.0 PURPOSE 2.0 DESIGN BASIS 3.0 ASSUMPTIONS

4.0 REFERENCES

5.0 ATTACHMENTS 6.0 ANALYSIS 7.0 RESULTS Support Data Sheet Attachments Loop Uncertainty Session Data Calculation Results Loop Data and Configuration Loop Calibration Data Instrument Data Vendor Data Location Data Process Concerns Device Dependencies

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 2 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 1.0 PURPOSE This section includes the Objective, Limitations, Conclusions, and the Applicability Statement of this calculation.

1.1 Objective The purpose of this calculation is to determine the Allowable Value (AV), Nominal Trip Setpoint (NTSP) and Actual Trip Setpoint (ATSP) for a high temperature steam source isolation by the Leak Detection System at the Limerick Generating Station (LGS). The increasing temperature signal is sensed by channel "B" of the High Pressure Coolant Injection (HPCI) Compartment Leak Detection Instrument, TE-055-1N030B.

This calculation is performed utilizing environmental conditions for a High Energy Line Break (HELB) accident scenario.

A summary of the calculation results may be found in Section 7.0 of this calculation. Other redundant/mirror loops for which the results of this calculation are applicable may be found in Section 1.4, Applicability.

1.2 Limitations This calculation is produced utilizing the harsh environmental conditions for a HELB accident scenario.(See Section 2.2.5).

The appropriate use of this calculation to support design or station activities, other than those specified in Section 1.1 of this calculation, is the responsibility of the user.

1.3 Conclusions The Upper Allowable Value of 191 DEGF was calculated by the software. The Upper Allowable Value is the result displayed in Section 7.7 of this calculation.

A Lower Allowable Value of 177 DEGF was determined using the calculation results and the maximum LOCA temperature as specified in calculation -1001 (Ref.

4.19). The calculation produces an Upper Allowable Value of 191 DEGF. The Upper Allowable Value (191 DEGF) is subtracted from the Upper Analytical/Process Limit (194 DEGF) to obtain a value of 3.0 DEGF which represents a two (2) sigma one sided Loop Uncertainty which does not contain any instrument drift. This amount (3.0 DEGF) is then added to the maximum LOCA

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 3 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 temperature of 174 DEGF to obtain the Lower Allowable Value of 177 DEGF.

An analysis of the proposed changes to the current station process setpoint values in relation to the results of this calculation has been performed and it has been concluded that the results of this calculation support the proposed changes to the current station setpoint values (Ref. 4.15).

An Insulation Resistance (IR) Calculation for TE-055-1N025B Configuration 01 determined that the IR error associated with this instrument loop was insignificant (< 0.001% of loop span). It was therefore concluded that no IR effects would be included in this calculation. This IR Calculation resides in the IISCP software and is utilized as further justification for the position taken by PECo previously that IR concerns do not have any adverse effects on system operability at LGS.

The environmental conditions for the locations of the temperature elements for the redundant/mirror loops are the same/equivalent or not as harsh as those specified for the temperature element for this loop.

Since the variables in this calculation are the same/equivalent or more restrictive, this calculation is valid for the redundant/mirror loops listed in Section 1.4.

1.4 Applicability A data evaluation has been performed in order to determine which, if any, redundant/mirror instrument loops are bound by the results of this calculation (the "base" calculation). The data evaluation results validate that this "base" calculation is applicable to the following Loop Affiliation Numbers:

• TE-055-1N030D Configuration 01

• TE-055-2N030B Configuration 01

• TE-055-2N030D Configuration 01 The results of this "base" calculation are bounding values for the instrument loops listed above based on such factors as instrument manufacturer and model number, instrument location environmental parameters, and actual installation and use of the instrument in the measurement of the process variable.

There is a discrepancy between the manufacturer and model displayed in PIMS and that which exists in the field. The GE PPD 145C3224P001 (see Ref. 4.16), the

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 4 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 Master Calibration Sheets (Ref. 4.7), and the EQ report (Ref. 4.17) list the manufacturer as Pyco and the model number as 102-9039 (which agrees with the instruments installed in the field). PIMS lists the manufacturer as California Alloy and the model number as N145C3224P1. ECR LG 94-07587 has been generated to correct the information in PIMS (Ref. 4.16). This calculation was completed with the manufacturer as Pyco and the model number as 102-9039.

2.0 DESIGN BASIS This section includes the Technical Background and Design Input information relevant to this calculation.

2.1 Technical Background High temperature in the space in which the HPCI steam lines are located outside the primary containment could indicate a breach in a HPCI steam line. The automatic closure of the HPCI isolation valve prevents the excessive loss of reactor coolant and the release of significant amounts of radio-active material from the nuclear system process barrier.

When high temperatures occur in the HPCI steam line space, the inboard and outboard steam supply isolation valves are isolated.

Pairs of temperature elements monitor for high ventilation air differential temperature and compartment ambient temperature. One sensor of each pair is associated with one of the logic divisions; the other is associated with the other division.

2.2 Design Input 2.2.1 Calculation -1001 Revision 5 (Ref. 4.19) supersedes calculation MISC-022 in its entirety and forms the basis for the analytical limit for all steam leak detection alarm and isolation setpoints. The calculation provides the calculated maximum temperature or different temperatures for summer and winter conditions and recommends the analytical limit for isolation setpoint based on the minimum of these two values. For HPCI Equipment Room Temperature High Isolation Setpoint, the analytical limit was revised from 250 DEGF to 194 DEGF. Furthermore, the isolation setpoint shall not be lower than the maximum LOCA temperature of 174 DEGF which is used to determine the Lower Allow Value (Ref. 4.19).

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 5 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 2.2.2 This calculation includes any applicable System Rerate Design/Operating Conditions and Impacts as a result of power rerate analyses per the guidelines contained in Specification NE-177 (Ref. 4.8 & 4.10).

2.2.3 Additional margin of 10.36110 DEGF was added to this calculation to support the ATSP of 180 DEGF. Of this 10.36110 DEGF, 3.00000 DEGF is assigned margin to support the IISCP Loop Leave Alone Zone (LAZ) guidelines as discussed in Section 2.2.6 and to account for the calibration practices of the instrument channels. The remaining 7.36110 DEGF is unassigned margin which represents additional conservatism that may be utilized in future analyses.

The calibration practices of the instrument channels are accounted for by providing additional margin for M&TE beyond that in Section 6.2.2. This is done to provide 1% to account for the setting tolerance of the TIS.

This also provides additional margin beyond that portion allocated in Section 6.2.1 to cover the 1% required accuracy for the TE.

Setting Tolerance is not provided specifically for the TE since it is not calibratable.

2.2.4 Based on engineering judgement, S1 has been included as a process consideration. This consideration results in a conservatively rounded Allowable Value that supports the current Tech Spec revision request.

2.2.5 The selection of HELB environmental conditions for the performance of this calculation is based on engineering judgment and system knowledge. The environmental conditions for a HELB accident scenario are the most severe conditions to which the thermocouple sensors may be exposed and still be expected to perform their safety function.

2.2.6 The delta between the Allowable Value and the Actual Trip Set Point within this calculation is 11.0006 DEGF which meets or exceeds the IISCP Program Guidance of equal to or greater than 1.5 times the loop LAZ (Ref. 4.3, 4.18) 2.2.7 The Setting Tolerances for the TIS in this calculation were reallocated from the region between AL and AV to the region between NTSP and ATSP in order to maintain the current station setpoint. This reallocation was

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 6 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 accomplished by assigning 0.0 to the Setting Tolerance of each instrument and verifying that the assigned margin amount was greater than one LAZ. Since the LAZ is equal to the square root of the sum of the squares of the Setting Tolerances, verification that the assigned margin is greater than one LAZ insures that the effects of the Setting Tolerances are included in the determination of the ATSP. No specific setting tolerance was provided for the T/C since it is not calibratable.

2.2.8 All other design inputs to this calculation are documented on the Supporting Data Sheet Attachments.

3.0 ASSUMPTIONS 3.1 Assumptions Not Requiring Confirmation 3.1.1 None 3.2 Assumptions Requiring Confirmation 3.2.1 None

4.0 REFERENCES

4.1 Limerick Generating Station Updated Final Safety Analysis Report (UFSAR), Revision 16 (dated September 2012)

Section 5.2.5.2.2 - Detection of Abnormal Leakage Outside the Primary Containment; Section 7.6.1.3 - Leak Detection System -

Instrumentation and Controls; 4.2 Limerick Generating Station Technical Specifications, Unit 1, Amendment 202, Revision 208 and Unit 2 Amendment 164, Revision 169 Table 3.3.2-2 Item 4.d.

4.3 IISCP-PP-93-001, Revision 1 - Program Plan for the Implementation of Phase I of the PECo Improved Instrument Setpoint Control Program (IISCP) (Setpoint Methodology Reference).

4.4 M-171, Revision 0017, Limerick Generating Station Units 1&2 Environmental Service Conditions Specification. (Location Data reference).

4.5 IISCP-LG-CALSHEET Limerick Generating Station Instrument Setpoint Control Program - Calsheet.

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 7 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 4.6 Component Records List (PIMS CRL) 4.7 Master Calibration Sheets generated in accordance with PECo procedure IC-11-50014 for TE-055-1N025B dated 09/27/88, & TIS-025-101B dated 06/10/92.

4.8 Philadelphia Electric Letter from G.C. Storey to G.R.

Hull General Electric Company, subject "Final OPL-3 for Limerick ARTS/MELLLA Analysis". This document contains Limerick 1 Reload 4(cycle 5) Resolved OPL-3 Forms that include ARTS/MELLLA at rerate conditions Dated 03/09/93 (Power Rerate Information Reference).

4.9 General Electric Design Specification Data Sheets (DSDS) A61-4040-L-004, Revision 005 (Design Basis Reference).

4.10 NE-177, Revision 0001, Nuclear Safety Related Specification for Limerick Generating Station Units 1&2 Power Rerate Operating Conditions (Power Rerate Information Reference).

4.11 Deleted 4.12 Calculation -2208 Revision 0003 "RHR Compartment Pressurization due to Steam Line Break to RHR Hx" (Design Basis Reference).

4.13 Calculation LM-0400 Revision 0005 "HPCI and RCIC Pump Room Temperature Response Following a Small Break LOCA, Normal & Power Rerate Conditions" (Design Basis Reference).

4.14 Calculation LE-0036 Revision 0001 "Equivalency Evaluation between G.E Numac LDM and Riley Temperature Instrumentation to demonstrate Accuracy and Support the use of existing Setpoints for the Steam Leak Detection System, LGS Units 1 and 2" (Vendor Information Reference) 4.15 Modification P-00212, Revision 0000, "HPCI/RCIC EQ Upgrade" (Design Basis Reference).

4.16 ECR: LG 94-07587 Revision 000 "IISCP Project - CRL Manufacturer/Model # Changes" (IISCP Project Anomaly

1. 116) 4.17 EQ Binder P-300 Revision 0008 "Pyco Temperature Elements"(Vendor Information Reference) 4.18 CC-MA-103-2001 Revision 2 "Setpoint Methodology for PBAPS & LGS"

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 8 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 4.19 Calculation -1001 Revision 0005 "Compartment Temperature Transients for Steam and Water Leaks" (Analytical Limit Reference and Maximum LOCA Temperature).

4.20 ECR LG 10-00191 Revision 000 "Margin Improvement Needed in Steam Leak Detection Tech Spec" 4.21 ECR LG 12-00344 Revision 000 "Margin Improvement Needed in Steam Leak Detection Tech Spec" 5.0 ATTACHMENTS 5.1 See Supporting Data Sheet Attachments located within this calculation.

6.0 ANALYSIS 6.1 Loop Effects 6.1.1 Loop ID No.: TE-055-1N030B Configuration: 01 6.1.2 Loop Function: STEAM LEAK DETECTION HPCI COMPARTMENT 6.1.3 Configuration

Description:

HI TEMP TRIP 6.1.4 Loop Instrument List Device ID Number Function Number 1 TE-055-1N030B IO 0 2 TIS-025-101B S 0 6.1.5 Device Dependency Device Environment Power Calibration Radiation 1 A A A A 2 B B B B 6.1.6 Device Dependency References Environmental:

N/A Power:

N/A Calibration:

N/A Radiation:

N/A 6.1.7 PMA and PEA Effects Type Magnitude A/N Sign PMA PEA IR References PMA:

PEA:

IR:

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 9 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 6.1.8 Miscellaneous Random and Bias Effects Dependent Dependent Type Magnitude Instrument Uncertainty A/N Sign S1 0.00341 N

R S2 S3 R1 R2 R3 References S1:

SEE SECTION 2.2.4 S2:

S3:

R1:

R2:

R3:

6.1.9 Basis Point of Interest:

180.0000 Accident:

HELB Pressure Effects:

Independent 6.2 Device Effects 6.2.1 Device Accuracy (CA)

CA = va/S or Setting Tolerance (whichever is greater)

Where:

va

= vendors stated accuracy S

= instruments calibrated span R

= instruments range 6.2.1.1 TE-055-1N030B va = 0.75%*S*0.66 S = 300 R = 3.500e+002 Setting tolerance = 0.00000 CA = 0.00495 6.2.1.2 TIS-025-101B va = 1.0%*S*0.66 S = 300 R = 3.500e+002 Setting tolerance = 0.00000 CA = 0.00660 6.2.2 Device M&TE Allowance MTE = CA + margin Where:

CA

= device calibration accuracy margin = additional margin supplied by calculation originator

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 10 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 6.2.2.1 TE-055-1N030B CA = 0.00495 Margin = 0.00000 MTE = 0.00495 6.2.2.2 TIS-025-101B CA = 0.00660 Margin = 0.00000 MTE = 0.00660 6.2.3 Device Drift D = vd * ( (tc

• 1.25 / td) ) / s Where:

vd

= vendors stated drift specification td

= vendors drift time specification tc

= instruments calibration period S

= instruments calibrated span R

= instruments range 6.2.3.1 TE-055-1N030B vd = 0.0 td = 1.0 tc = 731 S = 300 R = 3.500e+002 D = 0.00000 6.2.3.2 TIS-025-101B vd = 0.233%*S*0.66 td = 31.

tc = 731 S = 300 R = 3.500e+002 D = 0.00835 6.2.4 Device Static Pressure SPE = (SPz 2 + SPs

2)

(for independent pressure effects)

SPE = SPz + SPs (for dependent pressure effects)

SPz = SPz

• lPo - Pcl / S SPs = SPs

• lPo - Pcl / S Where:

SPz

= vendors stated zero static pressure effect SPs

= vendors stated span static pressure effect Po

= normal operating pressure Pc

= calibrated pressure S

= instruments calibrated span R

= instruments range Note: Static pressure effects are relevant to sensors only.

6.2.4.1 TE-055-1N030B

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 11 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 SPS = 0.0 SPZ = 0.0 Po = 0.00 Pc = 0.00000 S = 300 R = 3.500e+002 SPs = 0.00000 SPz = 0.00000 SPE = 0.00000 6.2.4.2 TIS-025-101B Sensor is not 'Y' (see attachment 9).

6.2.5 Device Over Pressure OPE = vope

• lPa - Pml / S (for linear devices)

OPE = vope / S (for non-linear devices)

Where:

vope = vendors stated over pressure effect Pa

= maximum operating pressure Pm

= instruments design pressure S

= instruments calibrated span R

= instruments range X

= lPa - Pml Note: Over pressure effects are relevant to sensors only, where the maximum operating pressure is greater than instruments design pressure.

6.2.5.1 TE-055-1N030B vope = 0.0 Pa = 0.00 Pm = 0.00 S = 300 R = 3.500e+002 OPE = 0.00000 6.2.5.2 TIS-025-101B Sensor is not 'Y' (see attachment 9).

6.2.6 Device Drift Temperature DTE = vte

• dT / S (for linear devices)

DTE = vte / S (for non-linear devices)

Where:

vte

= vendor specified temperature effect dT

= (Normal Temp - 68 F)

S

= instruments calibrated span R

= instruments range 6.2.6.1 TE-055-1N030B vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 115.00 DTE = 0.00000

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 12 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 6.2.6.2 TIS-025-101B vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 82.00 DTE = 0.00000 6.2.7 Device Accuracy Temperature ATE = vte

• dT / S (for linear devices)

ATE = vte / S (for non-linear devices)

Where:

vte

= vendor specified temperature effect dT

= laccident temperature - normal temperaturel S

= instruments calibrated span R

= instruments range 6.2.7.1 TE-055-1N030B vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 115.00 Accident temp = 306.83 ATE = 0.00000 6.2.7.2 TIS-025-101B vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 82.00 Accident temp = 82.00 ATE = 0.00000 6.2.8 Device Humidity HE = dH

• vhe / S (for linear devices)

HE = vhe / S (for non-linear devices)

Where:

vhe

= vendors stated humidity specification S

= instruments calibrated span R

= instruments range dH

= laccident humidity - normal humidityl 6.2.8.1 TE-055-1N030B vhe = 0.0 S = 300 R = 3.500e+002 Accident hum = 100.00 Normal hum = 90.00 HE = 0.00000 6.2.8.2 TIS-025-101B vhe = 0.0

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 13 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 S = 300 R = 3.500e+002 Accident hum = 90.00 Normal hum = 90.00 HE = 0.00000 6.2.9 Device Accuracy Radiation ARE = vre

• DeltaRad / S (for linear devices)

ARE = vre / S (for non-linear devices)

Where:

vre

= vendor specified radiation effect DeltaRad

= (accident radiation - normal radiation)

S

= instruments calibrated span R

= instruments range 6.2.9.1 TE-055-1N030B vre = 0.0 S = 300 R = 3.500e+002 Accident rad = 4.93000 Normal rad = 0.90500 ARE = 0.00000 6.2.9.2 TIS-025-101B Environmental qualifier is not 'Y' (see attachment 5).

6.2.10 Device Seismic VSE = SRS

• vse / S (for linear devices)

VSE = vse / S (for non-linear devices)

Where:

vse

= vendors stated seismic specification S

= instruments calibrated span R

= instruments range SRS

= seismic response envelope 6.2.10.1 TE-055-1N030B Seismic class is not '1' in Pims (see attachment 5).

6.2.10.2 TIS-025-101B Seismic class is not '1' in Pims (see attachment 5).

6.2.11 Device Power PSE = pss

• pse / S Where:

pse

= vendors stated power supply specification pss

= device power supply stability S

= instruments calibrated span R

= instruments range 6.2.11.1 TE-055-1N030B

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 14 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 pse = 0.0 S = 300 R = 3.500e+002 pss = 0.000 PSE = 0.00000 6.2.11.2 TIS-025-101B pse = 0.0 S = 300 R = 3.500e+002 pss = 12.000 PSE = 0.00000 7.0 RESULTS 7.1 Loop Accuracy Allowance (AL)

AL_norm

= A + OP + SP + PE AL_accid

= AL_norm + S (for S > TE + RE + AHE)

AL_accid

= AL_norm + TE + RE + AHE (for S TE + RE + AHE)

Where:

A

= CA 2

TE

= ATE 2

OP

= OPE 2

SP

= SPE 2

RE

= ARE 2

AHE

= HE 2

S

= VSE 2

PE

= PSE 2

AL

= 0.00007 7.2 Loop Drift Allowance (DL)

DL = DE + DT Where:

DE

= D 2

DT

= DTE 2

DL

= 0.00007 7.3 Loop Calibration Allowance (CL)

CL = V + M Where:

V

= (setting tolerance) 2 M

= MTE 2

CL

= 0.00007 7.4 TLU (Positive)TLUp = [IR + PMAp + PEAp + PCp + PMAo + PEAo + Pco +

(AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 15 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 (Negative)TLUn = [- PMAn - PEAn - PCn - PMAo - PEAo - PCo + -

(AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span All other variables as previous defined.

TLUp = 4.42412 DEGF TLUn = -4.42412 DEGF 7.5 NTSP (Increasing) NTSP = limit + [- PMAn - PEAn - PCn - PMAo - PEAo - PCo +

(1.645 / sigma) * - (AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span (Decreasing) NTSP = limit + [IR + PMAp + PEAp + PCp + PMAo + PEAo + PCo

+ (1.645 / sigma) * (AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span Where:

limit = loop analytical or process limit limit = 194.00 DEGF sigma = 2 NTSP = 190.36116 DEGF 7.6 ATSP (Increasing) ATSP = NTSP + margin (Decreasing) ATSP = NTSP - margin Where:

margin = additional margin supplied by calculation originator margin = -10.36110 ATSP = 180.00006 DEGF 7.7 Allowable Value (Decreasing) AV = limit + [IR + PMAp + PEAp + PCp + PMAo + PEAo + Pco +

(1.645 / sigma) * (AL + CL + PMAr + PEAr + PCr) ]

• Loop span (Increasing) AV = limit + [- PMAn - PEAn - PCn - PMAo - PEAo - Pco +

(1.645 / sigma) * - (AL + CL + PMAr + PEAr + PCr) ]

• Loop span All other variables as previously defined.

AV = 191.00066 DEGF

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 16 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 1: Session Data Station: LG Unit: 1 Responsible Branch: LEDE Safety Related (Y/N): Y

==

Description:==

STEAM LEAK DETECTION HPCI PUMP ROOM System Number: 055 Structure: RX ENCL Component: TE-55-1N030B/TIS Revision

Description:

REVISE AL PER -1001 REV 5 (ECR 10-00191)

Vendor Calc Number: N/A Revision: NA Other Calculations: N Provides info TO: N/A Receives info FROM: LE-0036

-1001 LM-0400

-2208 Supercedes: N/A

1. Accident type:

HELB

2. Pressure effects dependent or independent (I/D):

Independent

3. Process increasing, decreasing or neither (I/D/N):

Increasing

4. Input point of interest:

180.0000

5. Include additional margin for actual setpoint calculation:

Yes

6. Additional margin to be used:

-10.36110

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 17 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13

Calculation Results Temperature Device F N Accuracy Normal Accident Humidity Tol Pwr Supp TE-055-1N030B IO 0 0.00495 0.00000 0.00000 0.00000 0.00000 0.00000 TIS-025-101B S 0 0.00660 0.00000 0.00000 0.00000 0.00000 0.00000 Device F N SPE Rad Acc M&TE Drift Ovr Pres Seismic TE-055-1N030B IO 0 0.00000 0.00000 0.00495 0.00000 0.00000 N/A TIS-025-101B S 0 N/A N/A 0.00660 0.00835 N/A N/A Process Concerns Normal Accident Positive Negative Offsetting Positive Negative Offsetting PMA 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 PEA 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 IR 0.00000 Other 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 Loop Results Normal Accident TLU*

4.42412

-4.42412 4.42412

-4.42412 AL 0.00007 0.00007 Increasing Decreasing Increasing Decreasing NTSP*

190.36116 N/A 190.36116 N/A AV*

191.00066 N/A 191.00066 N/A ATSP*

180.00006 N/A 180.00006 N/A Additional Margin: -10.36110 DL: 0.00007 CL: 0.00007

• These values are in DEGF

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 18 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 3: Loop Data Loop Number: TE-055-1N030B Instruments Function Num 1

2 3

4 5

6 7

8 9

10 TE-055-1N030B IO 0

X X

TIS-025-101B S

0 X

TIS-025-101B IO 0

X 0

0 0

0 0

0 0

Configuration Descriptions 1: HI TEMP TRIP 6:

2: TEMP IND 7:

3:

8:

4:

9:

5:

10:

Loop

Description:

STEAM LEAK DETECTION HPCI COMPARTMENT Originator: SOEURN S Date: 03/07/13 Revision: 00 ATTACHMENT 4: Loop Calibration Data Loop Number: TE-055-1N030B Configuration: 01 Units Min Max Normal Trip Process Temperature 0.00 0.00 0.00 0.00 Process Radiation 0.000e+000 0.000e+000 0.000e+000 0.000e+000 Process Humidity 0.00 0.00 0.00 0.00 Process Pressure 0.00 0.00 0.00 0.00 Loop Span DEGF 50.00 350.00 Sigma: 2 Value Units Value Setpoint 180.00 DEGF Loop Setting Limit 0.000 Reset Loop Leave Alone Zone 3.000 Allowable 191.00 DEGF Loop Calculation Acc 0.000 Design/safety Limit Calibration Frequency 731 Analytical/Proc Limit 194.00 DEGF Originator: SOEURN S Date: 03/07/13 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 19 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 5: Instrument Data Component Id: TE-055-1N030B Facility: LG Unit: 1 System: 055

==

Description:==

HPCI COMPARTMENT LEAK DETECTION LEAK DET --

SHOWN ONP&ID 25 Function: IO 0 Type: I E Manufacturer Code: P427 Model #: 102-9039 Location: 015177109 Elevation: 177 Area: 015 Serial #: 01214 QA Class: Q Op Time: 1 Service Life: 000 EQ: Y Seismic Class:

Tech Spec: Y Tech Spec Ref: T.3.2.2-2.4.D Transient: NA Reg Guide 1.97: N Power Supply Reg: 0.000 Tolerance: 0.000 Loop Number: TE-055-1N030B Loop Diagram: N/A Computer Address: N/A P&ID: M-0025 Installation Detail: N/A Calibration ST: ST-2-025-405-1 Calibration Proc: ST-2-025-405-1 Functional ST: ST-2-055-611-1 Procedure #: IC-11-00001 Response ST: N/A Other:

Mod Number:

Other:

Signal From: PROCESS Signal To: TIS-025-101B CH A3-1 Mod Rev:

Alarms & Actions: N/A Instruction Book:

Input Min: 50.00 Input Max: 350.00 Input Unit: DEGF Output Min: 0.391 Output Max: 8.064 Output Unit: MVDC HC: 0.000 Setting Tolerance: 0.00000 Leave Alone Zone: 0.01000 HC Corrected:

SP Corrected:

Add. Margin: 0.00000 MTE device Period: 731 MTE Accuracy HC

Reference:

N/A SP

Reference:

N/A Originator: SOEURN S Date: 03/07/13 Revision: 2

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 20 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 5: Instrument Data Component Id: TIS-025-101B Facility: LG Unit: 1 System: 025

==

Description:==

STEAM LEAK DETECTION TEMP MONITOR DIV. 2/B1 Function: S 0 Type: I S Manufacturer Code: G080 Model #: 304A3714G004 Location: 008289542 Elevation: 289 Area: 008 Serial #:

QA Class: Q Op Time: N/A Service Life: 000 EQ: N Seismic Class:

Tech Spec: Y Tech Spec Ref: T3.3.2-2.4 Transient: NA Reg Guide 1.97: N Power Supply Reg: 120.000 Tolerance: 12.000 Loop Number: SEE REMARKS Loop Diagram: N/A Computer Address: N/A P&ID: M-0025 Installation Detail: N/A Calibration ST: ST-2-025-405-1 Calibration Proc: ST-2-025-405-1 Functional ST: SEE REMARKS Procedure #: IC-11-00001 Response ST: N/A Other:

Mod Number:

Other:

Signal From: SEE REMARKS Signal To: SEE REMARKS Mod Rev:

Alarms & Actions: SEE REMARKS Instruction Book: N-00E-68-00024 (GEK-97146)

Input Min: 50.00 Input Max: 350.00 Input Unit: DEGF Output Min: 0 Output Max: 1 Output Unit:

HC: 0.000 Setting Tolerance: 0.00000 Leave Alone Zone: 0.01000 HC Corrected:

SP Corrected:

Add. Margin: 0.00000 MTE device Period: 731 MTE Accuracy HC

Reference:

N/A SP

Reference:

N/A Originator: SOEURN S Date: 03/07/13 Revision: 5

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 21 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 6: Vendor Data Manufacturer Code: P427 Model #: 102-9039 Function: IO 0

Reference:

REFLECTS 2 SIGMA VALUE (CALC# LE-0065)

Min 5.000e+001 Max 3.500e+002 Units DEGF Pressure 0.00 Accuracy Information Accuracy 0.75%*S*0.66 Seismic 0.0 Temperature 0.0 Radiation 0.0 Over Pressure 0.0 Humidity 0.0 Drift 0.0 Time 1.0 Power Supply 0.0 Pressure Zero 0.0 Pressure Span

0.0 Originator

KINCAID SC Date: 07/06/01 Revision: 00 ATTACHMENT 6: Vendor Data Manufacturer Code: G080 Model #: 304A3714G004 Function: S 0

Reference:

GEK-97146, NE-68-24; REFLECTS 2 SIGMA VALUES (CALC# LE-0036)

Min 5.000e+001 Max 3.500e+002 Units DEGF Pressure 0.00 Accuracy Information Accuracy 1.0%*S*0.66 Seismic 0.0 Temperature 0.0 Radiation 0.0 Over Pressure 0.0 Humidity 0.0 Drift 0.233%*S*0.66 Time

31.

Power Supply 0.0 Pressure Zero 0.0 Pressure Span

0.0 Originator

THOMAS RT Date: 04/18/94 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 22 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 7: Location Data Location Code: 015177109

==

Description:==

UNIT 1 HPCI PUMP COMPT - REVISED BASED ON 94-08691 Minimum Normal Trip LOCA Trip HELB Trip MSLB Maximum Temp 65.00 115.00 176.00 306.83 306.83 115.00 Radiation 2.580e+00 9.050e+05 4.930e+06 4.930e+06 4.930e+06 9.050e+05 Humidity 50.00 90.00 90.00 100.00 100.00 90.00 Pressure 14.69 14.69 14.70 17.64 17.64 14.69 Seismic Response Envelope: 0.00 Originator: WEINGARD RD Date: 12/16/09 Revision: 3 ATTACHMENT 7: Location Data Location Code: 008289542

==

Description:==

ROOM 542, AUXILIARY EQUIPMENT ROOM Minimum Normal Trip LOCA Trip HELB Trip MSLB Maximum Temp 60.00 82.00 82.00 82.00 82.00 82.00 Radiation 5.000e-04 1.760e+02 1.890e+02 1.760e+02 1.760e+02 1.760e+02 Humidity 30.00 90.00 90.00 90.00 90.00 90.00 Pressure 14.70 14.70 14.70 14.70 14.70 14.70 Seismic Response Envelope: 0.00 Originator: CAROLAN JF Date: 03/31/93 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N030B 01 Page 23 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 8: Process Concerns Contribution to Consideration Uncertainty Sign A/N Consideration References 1 PMA Dependent Dependent 2 PEA Device Uncertainty 3 IR 4 S1 0.00341 R

N SEE SECTION 2.2.4 5 S2 6 S3 7 R1 8 R2 9 R3 ATTACHMENT 9: Device Dependencies Dependency Static Calibration Devices Function Env Pwr Cal Rad Pressure Humid Sensor TE-055-1N030B IO 0

A A

A A

0.00000 90.00 Y

TIS-025-101B S

0 B

B B

B 0.00000 90.00 N

Dependency References Env: N/A Cal: N/A Pwr: N/A Rad: N/A Cal Condition: N/A Just: Maximum Normal Humidity for Location Code

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 1 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 TABLE OF CONTENTS SECTION 1.0 PURPOSE 2.0 DESIGN BASIS 3.0 ASSUMPTIONS

4.0 REFERENCES

5.0 ATTACHMENTS 6.0 ANALYSIS 7.0 RESULTS Support Data Sheet Attachments Loop Uncertainty Session Data Calculation Results Loop Data and Configuration Loop Calibration Data Instrument Data Vendor Data Location Data Process Concerns Device Dependencies

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 2 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 1.0 PURPOSE This section includes the Objective, Limitations, Conclusions, and the Applicability Statement of this calculation.

1.1 Objective The purpose of this calculation is to determine the Allowable Value (AV), Nominal Trip Setpoint (NTSP) and Actual Trip Setpoint (ATSP) for a high temperature steam source isolation by the Leak Detection System at the Limerick Generating Station (LGS). The increasing temperature signal is sensed by channel "B" of the High Pressure Coolant Injection (HPCI) Pipeway Area Leak Detection Instrument, TE-055-1N025B.

This calculation is performed utilizing environmental conditions for a High Energy Line Break (HELB) accident scenario.

A summary of the calculation results may be found in Section 7.0 of this calculation.

Other redundant/mirror loops for which the results of this calculation are applicable may be found in Section 1.4, Applicability.

1.2 Limitations This calculation is produced utilizing the harsh environmental conditions for a HELB accident scenario (See Section 2.2.5).

The appropriate use of this calculation to support design or station activities, other than those specified in Section 1.1 of this calculation, is the responsibility of the user.

1.3 Conclusions The Upper Allowable Value of 191 DEGF was calculated by the software. The Upper Allowable Value is the result displayed in Section 7.7 of this calculation.

A Lower Allowable Value of 177 DEGF was determined using the calculation results and the maximum LOCA temperature as specified in calculation -1001 (Ref.

4.19). The calculation produces an Upper Allowable Value of 191 DEGF. The Upper Allowable Value (191 DEGF) is subtracted from the Upper Analytical/Process Limit (194 DEGF) to obtain a value of 3.0 DEGF which represents a two (2) sigma one sided Loop Uncertainty

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 3 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 which does not contain any instrument drift. This amount (3.0 DEGF) is then added to the maximum LOCA temperature of 174 DEGF to obtain the Lower Allowable Value of 177 DEGF.

An analysis of the proposed changes to the current station process setpoint values in relation to the results of this calculation has been performed and it has been concluded that the results of this calculation support the proposed changes to the current station setpoint values (Ref. 4.15).

An Insulation Resistance (IR) Calculation for TE-055-1N025B Configuration 01 determined that the IR error associated with this instrument loop was insignificant (< 0.001% of loop span). It was therefore concluded that no IR effects would be included in this calculation. This IR Calculation resides in the IISCP software and is utilized as further justification for the position taken by PECo previously that IR concerns do not have any adverse effects on system operability at LGS.

The environmental conditions for the locations of the temperature elements for the redundant/mirror loops are the same/equivalent or not as harsh as those specified for the temperature element for this loop.

Since the variables in this calculation are the same/equivalent or more restrictive, this calculation is valid for the redundant/mirror loops listed in Section 1.4.

1.4 Applicability A data evaluation has been performed in order to determine which, if any, redundant/mirror instrument loops are bound by the results of this calculation (the "base" calculation). The data evaluation results validate that this "base" calculation is applicable to the following Loop Affiliation Numbers:

• TE-055-1N025D Configuration 01

• TE-055-1N025F Configuration 01

• TE-055-1N025H Configuration 01

• TE-055-1N025K Configuration 01

• TE-055-1N025M Configuration 01

• TE-055-1N025P Configuration 01

• TE-055-1N025S Configuration 01

• TE-055-2N025B Configuration 01

• TE-055-2N025D Configuration 01

• TE-055-2N025F Configuration 01

• TE-055-2N025H Configuration 01

• TE-055-2N025K Configuration 01

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 4 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13

• TE-055-2N025M Configuration 01

• TE-055-2N025P Configuration 01

• TE-055-2N025S Configuration 01 The results of this "base" calculation are bounding values for the instrument loops listed above based on such factors as instrument manufacturer and model number, instrument location environmental parameters, and actual installation and use of the instrument in the measurement of the process variable.

The only difference among the fifteen redundant/mirror loops is the difference in environmental data for each loop due to the physical locations of each thermocouple, which does not introduce any additional uncertainty.

There is a discrepancy between the manufacturer and model displayed in PIMS and that which exists in the field. The GE PPD 145C3224P001 (see Ref. 4.16), the Master Calibration Sheets (Ref 4.7), and the EQ report (Ref 4.17) list the manufacturer as Pyco and the model number as 102-9039 (which agrees with the instruments installed in the field). PIMS lists the manufacturer as California Alloy and the model number as N145C3224P1. ECR LG 94-07587 has been generated to correct the information in PIMS (Ref 4.16). This calculation was completed with the manufacturer as Pyco and the model number as 102-9039.

2.0 DESIGN BASIS This section includes the Technical Background and Design Input information relevant to this calculation.

2.1 Technical Background High temperature in the space in which the HPCI steam lines are located outside the primary containment could indicate a breach in a HPCI steam line. The automatic closure of the HPCI isolation valve prevents the excessive loss of reactor coolant and the release of significant amounts of radio-active material from the nuclear system process barrier.

When high temperatures occur in the HPCI steam line space, the inboard and outboard steam supply isolation valves are isolated.

Pairs of temperature elements monitor for high ventilation air differential temperature and compartment ambient temperature. One sensor of each pair is associated with one of the logic divisions; the other is associated with the other division.

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 5 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 2.2 Design Input 2.2.1 Calculation -1001 Revision 5 (Ref. 4.19) supersedes calculation MISC-022 in its entirety and forms the basis for the analytical limit for all steam leak detection alarm and isolation setpoints. The calculation provides the calculated maximum temperature or different temperatures for summer and winter conditions and recommends the analytical limit for isolation setpoint based on the minimum of these two values. For HPCI Equipment Room Temperature High Isolation Setpoint, the analytical limit was revised from 200 DEGF to 194 DEGF. Furthermore, the isolation setpoint shall not be lower than the maximum LOCA temperature of 174 DEGF which is used to determine the Lower Allow Value (Ref. 4.19).

2.2.2 This calculation includes any applicable System Rerate Design/Operating Conditions and Impacts as a result of power rerate analyses per the guidelines contained in Specification NE-177 (Ref 4.8 & 4.10).

2.2.3 Additional margin of 10.36110 DEGF was added to this calculation to support the ATSP of 180 DEGF. Of this 10.36110 DEGF, 3.00000 DEGF is assigned margin to support the IISCP Loop Leave Alone Zone (LAZ) guidelines as discussed in Section 2.2.6 and to account for the calibration practices of the instrument channels. The remaining 7.36110 DEGF is unassigned margin which represents additional conservatism that may be utilized in future analyses.

The calibration practices of the instrument channels are accounted for by providing additional margin for M&TE beyond that in Section 6.2.2. This is done to provide 1% to account for the setting tolerance of the TIS.

This also provides additional margin beyond that portion allocated in Section 6.2.1 to cover the 1% required accuracy for the TE.

Setting Tolerance is not provided specifically for the TE since it is not calibratable.

2.2.4 Based on engineering judgment, S1 has been included as a process consideration. This consideration results in a conservatively rounded Allowable Value that supports the current Tech Spec revision request.

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 6 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 2.2.5 The selection of HELB environmental conditions for the performance of this calculation is based on engineering judgment and system knowledge. The environmental conditions for a HELB accident scenario are the most severe conditions to which the thermocouple sensors may be exposed and still be expected to perform their safety function.

2.2.6 The delta between the Allowable Value and the Actual Trip Set Point within this calculation is 11.0006 DEGF which meets or exceeds the IISCP Program Guidance of equal to or greater than 1.5 times the loop LAZ (Ref. 4.3, 4.18) 2.2.7 The Setting Tolerances for the TIS in this calculation were reallocated from the region between AL and AV to the region between NTSP and ATSP in order to maintain the current station setpoint. This reallocation was accomplished by assigning 0.0 to the Setting Tolerance of each instrument and verifying that the assigned margin amount was greater than one LAZ. Since the LAZ is equal to the square root of the sum of the squares of the Setting Tolerances, verification that the assigned margin is greater than one LAZ insures that the effects of the Setting Tolerances are included in the determination of the ATSP. No specific setting tolerance was provided for the T/C since it is not calibratable.

2.2.8 All other design inputs to this calculation are documented on the Supporting Data Sheet Attachments.

3.1 Assumptions Not Requiring Confirmation 3.1.1 None 3.2 Assumptions Requiring Confirmation 3.2.1 None

4.0 REFERENCES

4.1 Limerick Generating Station Updated Final Safety Analysis Report (UFSAR), Revision 16 (dated September 2012)

Section 5.2.5.2.2 - Detection of Abnormal Leakage Outside the Primary Containment;

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 7 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 Section 7.6.1.3 - Leak Detection System -

Instrumentation and Controls; 4.2 Limerick Generating Station Technical Specifications, Unit 1, Amendment 202, Revision 208 and Unit 2 Amendment 164, Revision 169 Table 3.3.2-2 Item 4.f.

4.3 IISCP-PP-93-001, Revision 1 - Program Plan for the Implementation of Phase I of the PECo Improved Instrument Setpoint Control Program (IISCP) (Setpoint Methodology Reference).

4.4 M-171, Revision 0017, Limerick Generating Station Units 1&2 Environmental Service Conditions Specification. (Location Data reference).

4.5 IISCP-LG-CALSHEET Limerick Generating Station Instrument Setpoint Control Program - Calsheet.

4.6 Component Records List (PIMS CRL) 4.7 Master Calibration Sheets generated in accordance with PECo procedure IC-11-50014 for TE-055-1N025B dated 09/27/88, & TIS-025-101B dated 06/10/92.

4.8 Philadelphia Electric Letter from G.C. Storey to G.R.

Hull General Electric Company, subject "Final OPL-3 for Limerick ARTS/MELLLA Analysis". This document contains Limerick 1 Reload 4(cycle 5) Resolved OPL-3 Forms that include ARTS/MELLLA at rerate conditions Dated 03/09/93 (Power Rerate Information Reference).

4.9 General Electric Design Specification Data Sheets (DSDS) A61-4040-L-004, Revision 0005 (Design Basis Reference) 4.10 NE-177, Revision 0001, Nuclear Safety Related Specification for Limerick Generating Station Units 1&2 Power Rerate Operating Conditions (Power Rerate Information Reference).

4.11 Deleted 4.12 Calculation -2208 Revision 0003 "RHR Compartment Pressurization due to Steam Line Break to RHR Hx" (Design Basis Reference).

4.13 Calculation LM-0400 Revision 0005 "HPCI and RCIC Pump Room Temperature Response Following a Small Break LOCA, Normal & Power Rerate Conditions" (Design Basis Reference).

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 8 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 4.14 Calculation LE-0036 Revision 0001 "Equivalency Evaluation between G.E Numac LDM and Riley Temperature Instrumentation to demonstrate Accuracy and Support the use of existing Setpoints for the Steam Leak Detection System, LGS Units 1 and 2" (Vendor Information Reference) 4.15 Modification P-00212, Revision 0000, "HPCI/RCIC EQ Upgrade" (Design Basis Reference).

4.16 ECR: LG 94-07587 Revision 000 "IISCP Project - CRL Manufacturer/Model # Changes" (IISCP Project Anomaly

1. 116) 4.17 EQ Binder P-300 Revision 0008 "Pyco Temperature Elements"(Vendor Information Reference) 4.18 CC-MA-103-2001 Revision 2 "Setpoint Methodology for PBAPS & LGS" 4.19 Calculation -1001 Revision 0005 "Compartment Temperature Transients for Steam and Water Leaks" (Analytical Limit Reference and Maximum LOCA Temperature).

4.20 ECR LG 10-00191 Revision 000 "Margin Improvement Needed in Steam Leak Detection Tech Spec" 4.21 ECR LG 12-00344 Revision 000 "Margin Improvement Needed in Steam Leak Detection Tech Spec" 5.0 ATTACHMENTS 5.1 See Supporting Data Sheet Attachments located within this calculation.

6.0 ANALYSIS 6.1 Loop Effects 6.1.1 Loop ID No.: TE-055-1N025B Configuration: 01 6.1.2 Loop Function: STEAM LEAK DETECTION HPCI PIPEWAY 6.1.3 Configuration

Description:

HI TEMP TRIP 6.1.4 Loop Instrument List Device ID Number Function Number 1 TE-055-1N025B IO 0 2 TIS-025-101B S 0 6.1.5 Device Dependency Device Environment Power Calibration Radiation

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 9 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 1 B B B B 2 S S S S 6.1.6 Device Dependency References Environmental:

N/A Power:

N/A Calibration:

N/A Radiation:

N/A 6.1.7 PMA and PEA Effects Type Magnitude A/N Sign PMA PEA IR References PMA:

PEA:

IR:

6.1.8 Miscellaneous Random and Bias Effects Dependent Dependent Type Magnitude Instrument Uncertainty A/N Sign S1 0.00341 N

R S2 S3 R1 R2 R3 References S1:

SEE SECTION 2.2.4 S2:

S3:

R1:

R2:

R3:

6.1.9 Basis Point of Interest:

180.0000 Accident:

HELB Pressure Effects:

Independent 6.2 Device Effects 6.2.1 Device Accuracy (CA)

CA = va/S or Setting Tolerance (whichever is greater)

Where:

va

= vendors stated accuracy S

= instruments calibrated span R

= instruments range 6.2.1.1 TE-055-1N025B

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 10 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 va = 0.75%*S*0.66 S = 300 R = 3.500e+002 Setting tolerance = 0.00000 CA = 0.00495 6.2.1.2 TIS-025-101B va = 1.0%*S*0.66 S = 300 R = 3.500e+002 Setting tolerance = 0.00000 CA = 0.00660 6.2.2 Device M&TE Allowance MTE = CA + margin Where:

CA

= device calibration accuracy margin = additional margin supplied by calculation originator 6.2.2.1 TE-055-1N025B CA = 0.00495 Margin = 0.00000 MTE = 0.00495 6.2.2.2 TIS-025-101B CA = 0.00660 Margin = 0.00000 MTE = 0.00660 6.2.3 Device Drift D = vd * ( (tc

• 1.25 / td) ) / s Where:

vd

= vendors stated drift specification td

= vendors drift time specification tc

= instruments calibration period S

= instruments calibrated span R

= instruments range 6.2.3.1 TE-055-1N025B vd = 0.0 td = 1.0 tc = 731 S = 300 R = 3.500e+002 D = 0.00000 6.2.3.2 TIS-025-101B vd = 0.233%*S*0.66 td = 31.

tc = 731 S = 300

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 11 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 R = 3.500e+002 D = 0.00835 6.2.4 Device Static Pressure SPE = (SPz 2 + SPs

2)

(for independent pressure effects)

SPE = SPz + SPs (for dependent pressure effects)

SPz = SPz

• lPo - Pcl / S SPs = SPs

• lPo - Pcl / S Where:

SPz

= vendors stated zero static pressure effect SPs

= vendors stated span static pressure effect Po

= normal operating pressure Pc

= calibrated pressure S

= instruments calibrated span R

= instruments range Note: Static pressure effects are relevant to sensors only.

6.2.4.1 TE-055-1N025B SPS = 0.0 SPZ = 0.0 Po = 0.00 Pc = 0.00000 S = 300 R = 3.500e+002 SPs = 0.00000 SPz = 0.00000 SPE = 0.00000 6.2.4.2 TIS-025-101B Sensor is not 'Y' (see attachment 9).

6.2.5 Device Over Pressure OPE = vope

• lPa - Pml / S (for linear devices)

OPE = vope / S (for non-linear devices)

Where:

vope = vendors stated over pressure effect Pa

= maximum operating pressure Pm

= instruments design pressure S

= instruments calibrated span R

= instruments range X

= lPa - Pml Note: Over pressure effects are relevant to sensors only, where the maximum operating pressure is greater than instruments design pressure.

6.2.5.1 TE-055-1N025B vope = 0.0 Pa = 0.00 Pm = 0.00 S = 300 R = 3.500e+002 OPE = 0.00000

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 12 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 6.2.5.2 TIS-025-101B Sensor is not 'Y' (see attachment 9).

6.2.6 Device Drift Temperature DTE = vte

• dT / S (for linear devices)

DTE = vte / S (for non-linear devices)

Where:

vte

= vendor specified temperature effect dT

= (Normal Temp - 68 F)

S

= instruments calibrated span R

= instruments range 6.2.6.1 TE-055-1N025B vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 122.00 DTE = 0.00000 6.2.6.2 TIS-025-101B vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 82.00 DTE = 0.00000 6.2.7 Device Accuracy Temperature ATE = vte

• dT / S (for linear devices)

ATE = vte / S (for non-linear devices)

Where:

vte

= vendor specified temperature effect dT

= laccident temperature - normal temperaturel S

= instruments calibrated span R

= instruments range 6.2.7.1 TE-055-1N025B vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 122.00 Accident temp = 272.19 ATE = 0.00000 6.2.7.2 TIS-025-101B vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 82.00 Accident temp = 82.00 ATE = 0.00000

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 13 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 6.2.8 Device Humidity HE = dH

• vhe / S (for linear devices)

HE = vhe / S (for non-linear devices)

Where:

vhe

= vendors stated humidity specification S

= instruments calibrated span R

= instruments range dH

= laccident humidity - normal humidityl 6.2.8.1 TE-055-1N025B vhe = 0.0 S = 300 R = 3.500e+002 Accident hum = 100.00 Normal hum = 90.00 HE = 0.00000 6.2.8.2 TIS-025-101B vhe = 0.0 S = 300 R = 3.500e+002 Accident hum = 90.00 Normal hum = 90.00 HE = 0.00000 6.2.9 Device Accuracy Radiation ARE = vre

• DeltaRad / S (for linear devices)

ARE = vre / S (for non-linear devices)

Where:

vre

= vendor specified radiation effect DeltaRad

= (accident radiation - normal radiation)

S

= instruments calibrated span R

= instruments range 6.2.9.1 TE-055-1N025B vre = 0.0 S = 300 R = 3.500e+002 Accident rad = 5.55000 Normal rad = 0.90500 ARE = 0.00000 6.2.9.2 TIS-025-101B Environmental qualifier is not 'Y' (see attachment 5).

6.2.10 Device Seismic VSE = SRS

• vse / S (for linear devices)

VSE = vse / S (for non-linear devices)

Where:

vse

= vendors stated seismic specification S

= instruments calibrated span

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 14 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 R

= instruments range SRS

= seismic response envelope 6.2.10.1 TE-055-1N025B Seismic class is not '1' in Pims (see attachment 5).

6.2.10.2 TIS-025-101B Seismic class is not '1' in Pims (see attachment 5).

6.2.11 Device Power PSE = pss

• pse / S Where:

pse

= vendors stated power supply specification pss

= device power supply stability S

= instruments calibrated span R

= instruments range 6.2.11.1 TE-055-1N025B pse = 0.0 S = 300 R = 3.500e+002 pss = 0.000 PSE = 0.00000 6.2.11.2 TIS-025-101B pse = 0.0 S = 300 R = 3.500e+002 pss = 12.000 PSE = 0.00000 7.0 RESULTS 7.1 Loop Accuracy Allowance (AL)

AL_norm

= A + OP + SP + PE AL_accid

= AL_norm + S (for S > TE + RE + AHE)

AL_accid

= AL_norm + TE + RE + AHE (for S TE + RE + AHE)

Where:

A

= CA 2

TE

= ATE 2

OP

= OPE 2

SP

= SPE 2

RE

= ARE 2

AHE

= HE 2

S

= VSE 2

PE

= PSE 2

AL

= 0.00007 7.2 Loop Drift Allowance (DL)

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 15 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 DL = DE + DT Where:

DE

= D 2

DT

= DTE 2

DL

= 0.00007 7.3 Loop Calibration Allowance (CL)

CL = V + M Where:

V

= (setting tolerance) 2 M

= MTE 2

CL

= 0.00007 7.4 TLU (Positive)TLUp = [IR + PMAp + PEAp + PCp + PMAo + PEAo + Pco +

(AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span (Negative)TLUn = [- PMAn - PEAn - PCn - PMAo - PEAo - PCo + -

(AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span All other variables as previous defined.

TLUp = 4.42412 DEGF TLUn = -4.42412 DEGF 7.5 NTSP (Increasing) NTSP = limit + [- PMAn - PEAn - PCn - PMAo - PEAo - PCo +

(1.645 / sigma) * - (AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span (Decreasing) NTSP = limit + [IR + PMAp + PEAp + PCp + PMAo + PEAo + PCo

+ (1.645 / sigma) * (AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span Where:

limit = loop analytical or process limit limit = 194 DEGF sigma = 2 NTSP = 190.36116 DEGF 7.6 ATSP (Increasing) ATSP = NTSP + margin (Decreasing) ATSP = NTSP - margin Where:

margin = additional margin supplied by calculation originator margin = -10.36110 ATSP = 180.00006 DEGF 7.7 Allowable Value

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 16 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 (Decreasing) AV = limit + [IR + PMAp + PEAp + PCp + PMAo + PEAo + Pco +

(1.645 / sigma) * (AL + CL + PMAr + PEAr + PCr) ]

• Loop span (Increasing) AV = limit + [- PMAn - PEAn - PCn - PMAo - PEAo - Pco +

(1.645 / sigma) * - (AL + CL + PMAr + PEAr + PCr) ]

• Loop span All other variables as previously defined.

AV = 191.00066 DEGF

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 17 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 1: Session Data Station: LG Unit: 1 Responsible Branch: LEDE Safety Related (Y/N): Y

==

Description:==

STEAM LEAK DETECTION HPCI PIPEWAY System Number: 055 Structure: RX ENCL Component: TE-55-1N025B TIS Revision

Description:

REVISE AL PER -1001 REV 5 (ECR 10-00191)

Vendor Calc Number: N/A Revision: NA Other Calculations: N Provides info TO: N/A Receives info FROM: LE-0036

-1001 LM-0400

-2208 Supercedes: N/A

1. Accident type:

HELB

2. Pressure effects dependent or independent (I/D):

Independent

3. Process increasing, decreasing or neither (I/D/N):

Increasing

4. Input point of interest:

180.0000

5. Include additional margin for actual setpoint calculation:

Yes

6. Additional margin to be used:

-10.36110

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 18 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13

Calculation Results Temperature Device F N Accuracy Normal Accident Humidity Tol Pwr Supp TE-055-1N025B IO 0 0.00495 0.00000 0.00000 0.00000 0.00000 0.00000 TIS-025-101B S 0 0.00660 0.00000 0.00000 0.00000 0.00000 0.00000 Device F N SPE Rad Acc M&TE Drift Ovr Pres Seismic TE-055-1N025B IO 0 0.00000 0.00000 0.00495 0.00000 0.00000 N/A TIS-025-101B S 0 N/A N/A 0.00660 0.00835 N/A N/A Process Concerns Normal Accident Positive Negative Offsetting Positive Negative Offsetting PMA 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 PEA 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 IR 0.00000 Other 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 Loop Results Normal Accident TLU*

4.42412

-4.42412 4.42412

-4.42412 AL 0.00007 0.00007 Increasing Decreasing Increasing Decreasing NTSP*

190.36116 N/A 190.36116 N/A AV*

191.00066 N/A 191.00066 N/A ATSP*

180.00006 N/A 180.00006 N/A Additional Margin: -10.36110 DL: 0.00007 CL: 0.00007

• These values are in DEGF

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 19 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 3: Loop Data Loop Number: TE-055-1N025B Instruments Function Num 1

2 3

4 5

6 7

8 9

10 TE-055-1N025B IO 0

X X

TIS-025-101B S

0 X

TIS-025-101B IO 0

X 0

0 0

0 0

0 0

Configuration Descriptions 1: HI TEMP TRIP 6:

2: TEMP IND 7:

3:

8:

4:

9:

5:

10:

Loop

Description:

STEAM LEAK DETECTION HPCI PIPEWAY Originator: SOEURN S Date: 03/08/13 Revision: 00 ATTACHMENT 4: Loop Calibration Data Loop Number: TE-055-1N025B Configuration: 01 Units Min Max Normal Trip Process Temperature 0.00 0.00 0.00 0.00 Process Radiation 0.000e+000 0.000e+000 0.000e+000 0.000e+000 Process Humidity 0.00 0.00 0.00 0.00 Process Pressure 0.00 0.00 0.00 0.00 Loop Span DEGF 50.00 350.00 Sigma: 2 Value Units Value Setpoint 180 DEGF Loop Setting Limit 0.000 Reset Loop Leave Alone Zone 3.000 Allowable 191 DEGF Loop Calculation Acc 0.000 Design/safety Limit Calibration Frequency 731 Analytical/Proc Limit 194 DEGF Originator: SOEURN S Date: 03/08/13 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 20 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 5: Instrument Data Component Id: TE-055-1N025B Facility: LG Unit: 1 System: 055

==

Description:==

STEAM LEAK DETECTION HPCI PIPEWAY LEAK DET --

SHOWN ONP&ID 25 Function: IO 0 Type: I E Manufacturer Code: P427 Model #: 102-9039 Location: 015217309 Elevation: 217 Area: 015 Serial #: 1308 QA Class: Q Op Time: 1 Service Life: 40 EQ: Y Seismic Class:

Tech Spec: Y Tech Spec Ref: T3.3.2-2.4.F Transient: NA Reg Guide 1.97: N Power Supply Reg: 0.000 Tolerance: 0.000 Loop Number: TE-055-1N025B Loop Diagram: N/A Computer Address: N/A P&ID: M-0025 Installation Detail: N/A Calibration ST: ST-2-025-405-1 Calibration Proc: ST-2-025-405-1 Functional ST: ST-2-055-611-1 Procedure #: IC-11-00001 Response ST: N/A Other:

Mod Number:

Other:

Signal From: PROCESS Signal To: TIS-025-101B CH A3-2 Mod Rev:

Alarms & Actions: N/A Instruction Book:

Input Min: 50.00 Input Max: 350.00 Input Unit: DEGF Output Min: 0.391 Output Max: 8.064 Output Unit: MVDC HC: 0.000 Setting Tolerance: 0.00000 Leave Alone Zone: 0.01000 HC Corrected:

SP Corrected:

Add. Margin: 0.00000 MTE device Period: 731 MTE Accuracy HC

Reference:

N/A SP

Reference:

N/A Originator: SOEURN S Date: 03/07/13 Revision: 1

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 21 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 5: Instrument Data Component Id: TIS-025-101B Facility: LG Unit: 1 System: 025

==

Description:==

STEAM LEAK DETECTION TEMP MONITOR DIV. 2/B1 Function: S 0 Type: I S Manufacturer Code: G080 Model #: 304A3714G004 Location: 008289542 Elevation: 289 Area: 008 Serial #:

QA Class: Q Op Time: N/A Service Life: 000 EQ: N Seismic Class:

Tech Spec: Y Tech Spec Ref: T3.3.2-2.4 Transient: NA Reg Guide 1.97: N Power Supply Reg: 120.000 Tolerance: 12.000 Loop Number: SEE REMARKS Loop Diagram: N/A Computer Address: N/A P&ID: M-0025 Installation Detail: N/A Calibration ST: ST-2-025-405-1 Calibration Proc: ST-2-025-405-1 Functional ST: SEE REMARKS Procedure #: IC-11-00001 Response ST: N/A Other:

Mod Number:

Other:

Signal From: SEE REMARKS Signal To: SEE REMARKS Mod Rev:

Alarms & Actions: SEE REMARKS Instruction Book: N-00E-68-00024 (GEK-97146)

Input Min: 50.00 Input Max: 350.00 Input Unit: DEGF Output Min: 0 Output Max: 1 Output Unit:

HC: 0.000 Setting Tolerance: 0.00000 Leave Alone Zone: 0.01000 HC Corrected:

SP Corrected:

Add. Margin: 0.00000 MTE device Period: 731 MTE Accuracy HC

Reference:

N/A SP

Reference:

N/A Originator: SOEURN S Date: 03/07/13 Revision: 5

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 22 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 6: Vendor Data Manufacturer Code: P427 Model #: 102-9039 Function: IO 0

Reference:

REFLECTS 2 SIGMA VALUE (CALC# LE-0065)

Min 5.000e+001 Max 3.500e+002 Units DEGF Pressure 0.00 Accuracy Information Accuracy 0.75%*S*0.66 Seismic 0.0 Temperature 0.0 Radiation 0.0 Over Pressure 0.0 Humidity 0.0 Drift 0.0 Time 1.0 Power Supply 0.0 Pressure Zero 0.0 Pressure Span

0.0 Originator

KINCAID SC Date: 07/06/01 Revision: 00 ATTACHMENT 6: Vendor Data Manufacturer Code: G080 Model #: 304A3714G004 Function: S 0

Reference:

GEK-97146, NE-68-24; REFLECTS 2 SIGMA VALUES (CALC# LE-0036)

Min 5.000e+001 Max 3.500e+002 Units DEGF Pressure 0.00 Accuracy Information Accuracy 1.0%*S*0.66 Seismic 0.0 Temperature 0.0 Radiation 0.0 Over Pressure 0.0 Humidity 0.0 Drift 0.233%*S*0.66 Time

31.

Power Supply 0.0 Pressure Zero 0.0 Pressure Span

0.0 Originator

THOMAS RT Date: 04/18/94 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 23 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 7: Location Data Location Code: 015217309

==

Description:==

UNIT 1 CNTMT ISOLATION VALVE COMPT EL 217' Minimum Normal Trip LOCA Trip HELB Trip MSLB Maximum Temp 65.00 122.00 120.00 272.19 272.19 122.00 Radiation 2.580e+00 9.050e+05 5.550e+06 5.550e+06 5.550e+06 9.050e+05 Humidity 50.00 90.00 90.00 100.00 100.00 90.00 Pressure 14.69 14.69 14.70 16.22 16.22 14.69 Seismic Response Envelope: 0.00 Originator: THOMAS RT Date: 04/18/94 Revision: 00 ATTACHMENT 7: Location Data Location Code: 008289542

==

Description:==

ROOM 542, AUXILIARY EQUIPMENT ROOM Minimum Normal Trip LOCA Trip HELB Trip MSLB Maximum Temp 60.00 82.00 82.00 82.00 82.00 82.00 Radiation 5.000e-04 1.760e+02 1.890e+02 1.760e+02 1.760e+02 1.760e+02 Humidity 30.00 90.00 90.00 90.00 90.00 90.00 Pressure 14.70 14.70 14.70 14.70 14.70 14.70 Seismic Response Envelope: 0.00 Originator: CAROLAN JF Date: 03/31/93 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-055-1N025B 01 Page 24 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 8: Process Concerns Contribution to Consideration Uncertainty Sign A/N Consideration References 1 PMA Dependent Dependent 2 PEA Device Uncertainty 3 IR 4 S1 0.00341 R

N SEE SECTION 2.2.4 5 S2 6 S3 7 R1 8 R2 9 R3 ATTACHMENT 9: Device Dependencies Dependency Static Calibration Devices Function Env Pwr Cal Rad Pressure Humid Sensor TE-055-1N025B IO 0

B B

B B

0.00000 90.00 Y

TIS-025-101B S

0 S

S S

S 0.00000 90.00 N

Dependency References Env: N/A Cal: N/A Pwr: N/A Rad: N/A Cal Condition: N/A Just: Maximum Normal Humidity for Location Code

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 1 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 TABLE OF CONTENTS SECTION 1.0 PURPOSE 2.0 DESIGN BASIS 3.0 ASSUMPTIONS

4.0 REFERENCES

5.0 ATTACHMENTS 6.0 ANALYSIS 7.0 RESULTS Support Data Sheet Attachments Loop Uncertainty Session Data Calculation Results Loop Data and Configuration Loop Calibration Data Instrument Data Vendor Data Location Data Process Concerns Device Dependencies

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 2 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 1.0 PURPOSE This section includes the Objective, Limitations, Conclusions, and the Applicability Statement of this calculation.

1.1 Objective The purpose of this calculation is to determine the Allowable Value (AV), Nominal Trip Setpoint (NTSP) and Actual Trip Setpoint (ATSP) for a high temperature steam source isolation by the Leak Detection System at the Limerick Generating Station (LGS). The increasing temperature signal is sensed by channel "A" of the Reactor Core Isolation Cooling (RCIC) Compartment Leak Detection Instrument, TE-049-1N023A.

This calculation is performed utilizing environmental conditions for a High Energy Line Break (HELB) accident scenario.

A summary of the calculation results may be found in Section 7.0 of this calculation.

Other redundant/mirror loops for which the results of this calculation are applicable may be found in Section 1.4, Applicability.

1.2 Limitations This calculation is produced utilizing the harsh environmental conditions for a HELB accident scenario. (See Section 2.2.5).

The appropriate use of this calculation to support design or station activities, other than those specified in Section 1.1 of this calculation, is the responsibility of the user.

1.3 Conclusions The Upper Allowable Value of 191 DEGF was calculated by the software. The Upper Allowable Value is the result displayed in Section 7.7 of this calculation.

A Lower Allowable Value of 161 DEGF was determined using the calculation results and the maximum LOCA temperature as specified in calculation -1001 (Ref.

4.18). The calculation produces an Upper Allowable Value of 191 DEGF. The Upper Allowable Value (191 DEGF) is subtracted from the Upper Analytical/Process Limit (194 DEGF) to obtain a value of 3.0 DEGF which represents a two (2) sigma one sided Loop Uncertainty

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 3 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 which does not contain any instrument drift. This amount (3.0 DEGF) is then added to the maximum LOCA temperature of 158 DEGF to obtain the Lower Allowable Value of 161 DEGF.

An analysis of the proposed changes to the current station process setpoint values in relation to the results of this calculation has been performed and it has been concluded that the results of this calculation support the proposed changes to the current station setpoint values (Ref. 4.15).

An Insulation Resistance (IR) Calculation for TE-055-1N025B Configuration 01 determined that the IR error associated with this instrument loop was insignificant (< 0.001% of loop span). It was therefore concluded that no IR effects would be included in this calculation. This IR Calculation resides in the IISCP software and is utilized as further justification for the position taken by PECo previously that IR concerns do not have any adverse effects on system operability at LGS.

The environmental conditions for the locations of the temperature elements for the redundant/mirror loops are the same/equivalent or not as harsh as those specified for the temperature element for this loop.

Since the variables in this calculation are the same/equivalent or more restrictive, this calculation is valid for the redundant/mirror loops listed in Section 1.4.

1.4 Applicability A data evaluation has been performed in order to determine which, if any, redundant/mirror instrument loops are bound by the results of this calculation (the "base" calculation). The data evaluation results validate that this "base" calculation is applicable to the following Loop Affiliation Numbers:

• TE-049-1N023C Configuration 01

• TE-049-2N023A Configuration 01

• TE-049-2N023C Configuration 01 The results of this "base" calculation are bounding values for the instrument loops listed above based on such factors as instrument manufacturer and model number, instrument location environmental parameters, and actual installation and use of the instrument in the measurement of the process variable.

2.0 DESIGN BASIS

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 4 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 This section includes the Technical Background and Design Input information relevant to this calculation.

2.1 Technical Background High temperature in the space in which the RCIC steam lines are located outside the primary containment could indicate a breach in a RCIC steam line. The automatic closure of the RCIC isolation valve prevents the excessive loss of reactor coolant and the release of significant amounts of radio-active material from the nuclear system process barrier.

When high temperatures occur in the RCIC steam line space, the inboard and outboard steam supply isolation valves are isolated.

Pairs of temperature elements monitor for high ventilation air differential temperature and compartment ambient temperature. One sensor of each pair is associated with one of the logic divisions; the other is associated with the other division.

2.2 Design Input 2.2.1 Calculation -1001 Revision 5 (Ref. 4.18) supersedes calculation MISC-022 in its entirety and forms the basis for the analytical limit for all steam leak detection alarm and isolation setpoints. The calculation provides the calculated maximum temperature or different temperatures for summer and winter conditions and recommends the analytical limit for isolation setpoint based on the minimum of these two values. For HPCI Equipment Room Temperature High Isolation Setpoint, the analytical limit was revised from 230 DEGF to 194 DEGF. Furthermore, the isolation setpoint shall not be lower than the maximum LOCA temperature of 158 DEGF which is used to determine the Lower Allow Value (Ref. 4.18).

2.2.2 This calculation includes any applicable System Rerate Design/Operating Conditions and Impacts as a result of power rerate analyses per the guidelines contained in Specification NE-177 (Ref. 4.8 & 4.10).

2.2.3 Additional margin of 10.36110 DEGF was added to this calculation to support the ATSP of 180 DEGF. Of this 10.36110 DEGF, 3.00000 DEGF is assigned margin to support the IISCP Loop Leave Alone Zone (LAZ) guidelines as discussed in Section 2.2.6 and to account for the

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 5 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 calibration practices of the instrument channels. The remaining 7.36110 DEGF is unassigned margin which represents additional conservatism that may be utilized in future analyses.

The calibration practices of the instrument channels are accounted for by providing additional margin for M&TE beyond that in Section 6.2.2. This is done to provide 1% to account for the setting tolerance of the TIS.

This also provides additional margin beyond that portion allocated in Section 6.2.1 to cover the 1% required accuracy for the TE.

Setting Tolerance is not provided specifically for the TE since it is not calibratable.

2.2.4 Based on engineering judgment, S1 has been included as a process consideration. This consideration results in a conservatively rounded Allowable Value that supports the current Tech Spec revision request.

2.2.5 The selection of HELB environmental conditions for the performance of this calculation is based on engineering judgment and system knowledge. The environmental conditions for a HELB accident scenario are the most severe conditions to which the thermocouple sensors may be exposed and still be expected to perform their safety function.

2.2.6 The delta between the Allowable Value and the Actual Trip Set Point within this calculation is 11.0006 DEGF which meets or exceeds the IISCP Program Guidance of equal to or greater than 1.5 times the loop LAZ (Ref. 4.3, 4.17) 2.2.7 The Setting Tolerances for the TIS in this calculation were reallocated from the region between AL and AV to the region between NTSP and ATSP in order to maintain the current station setpoint. This reallocation was accomplished by assigning 0.0 to the Setting Tolerance of each instrument and verifying that the assigned margin amount was greater than one LAZ. Since the LAZ is equal to the square root of the sum of the squares of the Setting Tolerances, verification that the assigned margin is greater than one LAZ insures that the effects of the Setting Tolerances are included in the determination of the ATSP. No specific setting tolerance was provided for the T/C since it is not calibratable.

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 6 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 2.2.8 All other design inputs to this calculation are documented on the Supporting Data Sheet Attachments.

3.0 ASSUMPTIONS 3.1 Assumptions Not Requiring Confirmation 3.1.1 None 3.2 Assumptions Requiring Confirmation 3.2.1 None

4.0 REFERENCES

4.1 Limerick Generating Station Updated Final Safety Analysis Report (UFSAR), Revision 16 (dated September 2012)

Section 5.2.5.2.2 - Detection of Abnormal Leakage Outside the Primary Containment; Section 7.6.1.3 - Leak Detection System -

Instrumentation and Controls; 4.2 Limerick Generating Station Technical Specifications, Unit 1, Amendment 106, Revision 208 and Unit 2 Amendment 51, Revision 169 Table 3.3.2-2 Item 5.d.

4.3 IISCP-PP-93-001, Revision 1 - Program Plan for the Implementation of Phase I of the PECo Improved Instrument Setpoint Control Program (IISCP) (Setpoint Methodology Reference).

4.4 M-171, Revision 0017, Limerick Generating Station Units 1&2 Environmental Service Conditions Specification. (Location Data reference).

4.5 IISCP-LG-CALSHEET Limerick Generating Station Instrument Setpoint Control Program - Calsheet.

4.6 Component Records List (PIMS CRL) 4.7 Master Calibration Sheets generated in accordance with PECo procedure IC-11-50014 for TE-049-1N025A dated 07/22/88, & TIS-025-101A dated 06/10/92.

4.8 Philadelphia Electric Letter from G.C. Storey to G.R. Hull General Electric Company, subject

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 7 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 "Final OPL-3 for Limerick ARTS/MELLLA Analysis". This document contains Limerick 1 Reload 4(cycle 5) Resolved OPL-3 Forms that include ARTS/MELLLA at rerate conditions Dated 03/09/93. (Power Rerate Information Reference).

4.9 General Electric Design Specification Data Sheets (DSDS) A61-4040-L-004, Revision 0005 (Design Basis Reference ).

4.10 NE-177, Revision 0001, Nuclear Safety Related Specification for Limerick Generating Station Units 1&2 Power Rerate Operating Conditions (Power Rerate Information Reference).

4.11 Deleted 4.12 Calculation -2208 Revision 0003 "RHR Compartment Pressurization due to Steam Line Break to RHR Hx" (Design Basis Reference).

4.13 Calculation LM-0400 Revision 0005 "HPCI and RCIC Pump Room Temperature Response Following a Small Break LOCA, Normal & Power Rerate Conditions" (Design Basis Reference).

4.14 Calculation LE-0036 Revision 0001 "Equivalency Evaluation between G.E. Numac LDM and Riley Temperature Instrumentation to demonstrate Accuracy and Support the use of existing Setpoints for the Steam Leak Detection System, LGS Units 1 and 2" (Vendor Information Reference) 4.15 Modification P-00212 Revision 0000 "HPCI/RCIC EQ Upgrade" (Design Basis Reference).

4.16 EQ Binder P-300 Revision 0008 "Pyco Temperature Elements"(Vendor Information Reference) 4.17 CC-MA-103-2001 Revision 2 "Setpoint Methodology for PBAPS & LGS" 4.18 Calculation -1001 Revision 0005 "Compartment Temperature Transients for Steam and Water Leaks" (Analytical Limit Reference and Maximum LOCA Temperature).

4.19 ECR LG 10-00191 Revision 000 "Margin Improvement Needed in Steam Leak Detection Tech Spec" 4.20 ECR LG 12-00344 Revision 000 "Margin Improvement Needed in Steam Leak Detection Tech Spec"

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 8 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 5.0 ATTACHMENTS 5.1 See Supporting Data Sheet Attachments located within this calculation.

6.0 ANALYSIS 6.1 Loop Effects 6.1.1 Loop ID No.: TE-049-1N023A Configuration: 01 6.1.2 Loop Function: STEAM LEAK DETECTION RCIC COMPARTMENT 6.1.3 Configuration

Description:

HI TEMP TRIP 6.1.4 Loop Instrument List Device ID Number Function Number 1 TE-049-1N023A IO 0 2 TIS-025-101A S 0 6.1.5 Device Dependency Device Environment Power Calibration Radiation 1 E E E E 2 U U U U 6.1.6 Device Dependency References Environmental:

N/A Power:

N/A Calibration:

N/A Radiation:

N/A 6.1.7 PMA and PEA Effects Type Magnitude A/N Sign PMA PEA IR References PMA:

PEA:

IR:

6.1.8 Miscellaneous Random and Bias Effects Dependent Dependent Type Magnitude Instrument Uncertainty A/N Sign S1 0.00341 N

R S2 S3 R1 R2 R3 References

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 9 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 S1:

SEE SECTION 2.2.4 S2:

S3:

R1:

R2:

R3:

6.1.9 Basis Point of Interest:

180.0000 Accident:

HELB Pressure Effects:

Independent 6.2 Device Effects 6.2.1 Device Accuracy (CA)

CA = va/S or Setting Tolerance (whichever is greater)

Where:

va

= vendors stated accuracy S

= instruments calibrated span R

= instruments range 6.2.1.1 TE-049-1N023A va = 0.75%*S*0.66 S = 300 R = 3.500e+002 Setting tolerance = 0.00000 CA = 0.00495 6.2.1.2 TIS-025-101A va = 1.0%*S*0.66 S = 300 R = 3.500e+002 Setting tolerance = 0.00000 CA = 0.00660 6.2.2 Device M&TE Allowance MTE = CA + margin Where:

CA

= device calibration accuracy margin = additional margin supplied by calculation originator 6.2.2.1 TE-049-1N023A CA = 0.00495 Margin = 0.00000 MTE = 0.00495 6.2.2.2 TIS-025-101A CA = 0.00660 Margin = 0.00000 MTE = 0.00660

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 10 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 6.2.3 Device Drift D = vd * ( (tc

• 1.25 / td) ) / s Where:

vd

= vendors stated drift specification td

= vendors drift time specification tc

= instruments calibration period S

= instruments calibrated span R

= instruments range 6.2.3.1 TE-049-1N023A vd = 0.0 td = 1.0 tc = 731 S = 300 R = 3.500e+002 D = 0.00000 6.2.3.2 TIS-025-101A vd = 0.233%*S*0.66 td = 31.

tc = 731 S = 300 R = 3.500e+002 D = 0.00835 6.2.4 Device Static Pressure SPE = (SPz 2 + SPs

2)

(for independent pressure effects)

SPE = SPz + SPs (for dependent pressure effects)

SPz = SPz

• lPo - Pcl / S SPs = SPs

• lPo - Pcl / S Where:

SPz

= vendors stated zero static pressure effect SPs

= vendors stated span static pressure effect Po

= normal operating pressure Pc

= calibrated pressure S

= instruments calibrated span R

= instruments range Note: Static pressure effects are relevant to sensors only.

6.2.4.1 TE-049-1N023A SPS = 0.0 SPZ = 0.0 Po = 0.00 Pc = 0.00000 S = 300 R = 3.500e+002 SPs = 0.00000 SPz = 0.00000 SPE = 0.00000 6.2.4.2 TIS-025-101A

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 11 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 Sensor is not 'Y' (see attachment 9).

6.2.5 Device Over Pressure OPE = vope

• lPa - Pml / S (for linear devices)

OPE = vope / S (for non-linear devices)

Where:

vope = vendors stated over pressure effect Pa

= maximum operating pressure Pm

= instruments design pressure S

= instruments calibrated span R

= instruments range X

= lPa - Pml Note: Over pressure effects are relevant to sensors only, where the maximum operating pressure is greater than instruments design pressure.

6.2.5.1 TE-049-1N023A vope = 0.0 Pa = 0.00 Pm = 0.00 S = 300 R = 3.500e+002 OPE = 0.00000 6.2.5.2 TIS-025-101A Sensor is not 'Y' (see attachment 9).

6.2.6 Device Drift Temperature DTE = vte

• dT / S (for linear devices)

DTE = vte / S (for non-linear devices)

Where:

vte

= vendor specified temperature effect dT

= (Normal Temp - 68 F)

S

= instruments calibrated span R

= instruments range 6.2.6.1 TE-049-1N023A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 115.00 DTE = 0.00000 6.2.6.2 TIS-025-101A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 82.00 DTE = 0.00000 6.2.7 Device Accuracy Temperature

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 12 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATE = vte

• dT / S (for linear devices)

ATE = vte / S (for non-linear devices)

Where:

vte

= vendor specified temperature effect dT

= laccident temperature - normal temperaturel S

= instruments calibrated span R

= instruments range 6.2.7.1 TE-049-1N023A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 115.00 Accident temp = 228.60 ATE = 0.00000 6.2.7.2 TIS-025-101A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 82.00 Accident temp = 82.00 ATE = 0.00000 6.2.8 Device Humidity HE = dH

• vhe / S (for linear devices)

HE = vhe / S (for non-linear devices)

Where:

vhe

= vendors stated humidity specification S

= instruments calibrated span R

= instruments range dH

= laccident humidity - normal humidityl 6.2.8.1 TE-049-1N023A vhe = 0.0 S = 300 R = 3.500e+002 Accident hum = 100.00 Normal hum = 90.00 HE = 0.00000 6.2.8.2 TIS-025-101A vhe = 0.0 S = 300 R = 3.500e+002 Accident hum = 90.00 Normal hum = 90.00 HE = 0.00000 6.2.9 Device Accuracy Radiation ARE = vre

• DeltaRad / S (for linear devices)

ARE = vre / S (for non-linear devices)

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 13 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 Where:

vre

= vendor specified radiation effect DeltaRad

= (accident radiation - normal radiation)

S

= instruments calibrated span R

= instruments range 6.2.9.1 TE-049-1N023A vre = 0.0 S = 300 R = 3.500e+002 Accident rad = 2.47000 Normal rad = 0.48400 ARE = 0.00000 6.2.9.2 TIS-025-101A Environmental qualifier is not 'Y' (see attachment 5).

6.2.10 Device Seismic VSE = SRS

• vse / S (for linear devices)

VSE = vse / S (for non-linear devices)

Where:

vse

= vendors stated seismic specification S

= instruments calibrated span R

= instruments range SRS

= seismic response envelope 6.2.10.1 TE-049-1N023A Seismic class is not '1' in Pims (see attachment 5).

6.2.10.2 TIS-025-101A Seismic class is not '1' in Pims (see attachment 5).

6.2.11 Device Power PSE = pss

• pse / S Where:

pse

= vendors stated power supply specification pss

= device power supply stability S

= instruments calibrated span R

= instruments range 6.2.11.1 TE-049-1N023A pse = 0.0 S = 300 R = 3.500e+002 pss = 0.000 PSE = 0.00000 6.2.11.2 TIS-025-101A pse = 0.0 S = 300 R = 3.500e+002

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 14 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 pss = 12.000 PSE = 0.00000 7.0 RESULTS 7.1 Loop Accuracy Allowance (AL)

AL_norm

= A + OP + SP + PE AL_accid

= AL_norm + S (for S > TE + RE + AHE)

AL_accid

= AL_norm + TE + RE + AHE (for S TE + RE + AHE)

Where:

A

= CA 2

TE

= ATE 2

OP

= OPE 2

SP

= SPE 2

RE

= ARE 2

AHE

= HE 2

S

= VSE 2

PE

= PSE 2

AL

= 0.00007 7.2 Loop Drift Allowance (DL)

DL = DE + DT Where:

DE

= D 2

DT

= DTE 2

DL

= 0.00007 7.3 Loop Calibration Allowance (CL)

CL = V + M Where:

V

= (setting tolerance) 2 M

= MTE 2

CL

= 0.00007 7.4 TLU (Positive)TLUp = [IR + PMAp + PEAp + PCp + PMAo + PEAo + Pco +

(AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span (Negative)TLUn = [- PMAn - PEAn - PCn - PMAo - PEAo - PCo + -

(AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span All other variables as previous defined.

TLUp = 4.42412 DEGF TLUn = -4.42412 DEGF 7.5 NTSP

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 15 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 (Increasing) NTSP = limit + [- PMAn - PEAn - PCn - PMAo - PEAo - PCo +

(1.645 / sigma) * - (AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span (Decreasing) NTSP = limit + [IR + PMAp + PEAp + PCp + PMAo + PEAo + PCo

+ (1.645 / sigma) * (AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span Where:

limit = loop analytical or process limit limit = 194 DEGF sigma = 2 NTSP = 190.36116 DEGF 7.6 ATSP (Increasing) ATSP = NTSP + margin (Decreasing) ATSP = NTSP - margin Where:

margin = additional margin supplied by calculation originator margin = -10.36110 ATSP = 180.00006 DEGF 7.7 Allowable Value (Decreasing) AV = limit + [IR + PMAp + PEAp + PCp + PMAo + PEAo + Pco +

(1.645 / sigma) * (AL + CL + PMAr + PEAr + PCr) ]

• Loop span (Increasing) AV = limit + [- PMAn - PEAn - PCn - PMAo - PEAo - Pco +

(1.645 / sigma) * - (AL + CL + PMAr + PEAr + PCr) ]

• Loop span All other variables as previously defined.

AV = 191.00066 DEGF

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 16 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 1: Session Data Station: LG Unit: 1 Responsible Branch: LEDE Safety Related (Y/N): Y

==

Description:==

STEAM LEAK DETECTION RCIC PUMP ROOM System Number: 049 Structure: RX ENCL Component: TE-49-1N023A/TIS Revision

Description:

REVISE AL PER -1001 REV 5 (ECR 10-00191)

Vendor Calc Number: N/A Revision: NA Other Calculations: N Provides info TO: N/A Receives info FROM: LE-0036

-1001 LM-0400

-2208 Supercedes: N/A

1. Accident type:

HELB

2. Pressure effects dependent or independent (I/D):

Independent

3. Process increasing, decreasing or neither (I/D/N):

Increasing

4. Input point of interest:

180.0000

5. Include additional margin for actual setpoint calculation:

Yes

6. Additional margin to be used:

-10.36110

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 17 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13

Calculation Results Temperature Device F N Accuracy Normal Accident Humidity Tol Pwr Supp TE-049-1N023A IO 0 0.00495 0.00000 0.00000 0.00000 0.00000 0.00000 TIS-025-101A S 0 0.00660 0.00000 0.00000 0.00000 0.00000 0.00000 Device F N SPE Rad Acc M&TE Drift Ovr Pres Seismic TE-049-1N023A IO 0 0.00000 0.00000 0.00495 0.00000 0.00000 N/A TIS-025-101A S 0 N/A N/A 0.00660 0.00835 N/A N/A Process Concerns Normal Accident Positive Negative Offsetting Positive Negative Offsetting PMA 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 PEA 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 IR 0.00000 Other 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 Loop Results Normal Accident TLU*

4.42412

-4.42412 4.42412

-4.42412 AL 0.00007 0.00007 Increasing Decreasing Increasing Decreasing NTSP*

190.36116 N/A 190.36116 N/A AV*

191.00066 N/A 191.00066 N/A ATSP*

180.00006 N/A 180.00006 N/A Additional Margin: -10.36110 DL: 0.00007 CL: 0.00007

• These values are in DEGF

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 18 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 3: Loop Data Loop Number: TE-049-1N023A Instruments Function Num 1

2 3

4 5

6 7

8 9

10 TE-049-1N023A IO 0

X X

TIS-025-101A S

0 X

TIS-025-101A IO 0

X 0

0 0

0 0

0 0

Configuration Descriptions 1: HI TEMP TRIP 6:

2: TEMP IND 7:

3:

8:

4:

9:

5:

10:

Loop

Description:

STEAM LEAK DETECTION RCIC COMPARTMENT Originator: SOEURN S Date: 03/08/13 Revision: 00 ATTACHMENT 4: Loop Calibration Data Loop Number: TE-049-1N023A Configuration: 01 Units Min Max Normal Trip Process Temperature 0.00 0.00 0.00 0.00 Process Radiation 0.000e+000 0.000e+000 0.000e+000 0.000e+000 Process Humidity 0.00 0.00 0.00 0.00 Process Pressure 0.00 0.00 0.00 0.00 Loop Span DEGF 50.00 350.00 Sigma: 2 Value Units Value Setpoint 180 DEGF Loop Setting Limit 0.000 Reset Loop Leave Alone Zone 3.000 Allowable 191.00 DEGF Loop Calculation Acc 0.000 Design/safety Limit Calibration Frequency 731 Analytical/Proc Limit 194 DEGF Originator: SOEURN S Date: 03/08/13 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 19 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 5: Instrument Data Component Id: TE-049-1N023A Facility: LG Unit: 1 System: 025

==

Description:==

RCIC COMPARTMENT LEAK DETECTION LEAK DET -- SHOWN ONP&ID 25 Function: IO 0 Type: I E Manufacturer Code: P427 Model #: 102-9039 Location: 015177108 Elevation: 177 Area: 015 Serial #:

QA Class: Q Op Time: 1 Service Life: 000 EQ: Y Seismic Class:

Tech Spec: Y Tech Spec Ref: T3.3.2-2.5D Transient: NA Reg Guide 1.97: N Power Supply Reg: 0.000 Tolerance: 0.000 Loop Number: TE-049-1N023A Loop Diagram: N/A Computer Address: N/A P&ID: M-0025 Installation Detail: N/A Calibration ST: ST-2-025-404-1 Calibration Proc: ST-2-025-404-1 Functional ST: ST-2-049-613-1 Procedure #: IC-11-00001 Response ST: N/A Other:

Mod Number:

Other:

Signal From: PROCESS Signal To: TIS-025-101A CH A5-1 Mod Rev:

Alarms & Actions: N/A Instruction Book:

Input Min: 50.00 Input Max: 350.00 Input Unit: DEGF Output Min: 0.391 Output Max: 8.064 Output Unit: MVDC HC: 0.000 Setting Tolerance: 0.00000 Leave Alone Zone: 0.01000 HC Corrected:

SP Corrected:

Add. Margin: 0.00000 MTE device Period: 731 MTE Accuracy HC

Reference:

N/A SP

Reference:

N/A Originator: SOEURN S Date: 03/08/13 Revision: 1

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 20 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 5: Instrument Data Component Id: TIS-025-101A Facility: LG Unit: 1 System: 025

==

Description:==

STEAM LEAK DETECTION TEMP MONITOR DIV. 1/A1 Function: S 0 Type: I S Manufacturer Code: G080 Model #: 304A3714G004 Location: 008289542 Elevation: 289 Area: 008 Serial #:

QA Class: Q Op Time: N/A Service Life: 000 EQ: N Seismic Class:

Tech Spec: Y Tech Spec Ref: T3.3.2-2.5 Transient: NA Reg Guide 1.97: N Power Supply Reg: 120.000 Tolerance: 12.000 Loop Number: SEE REMARKS Loop Diagram: N/A Computer Address: N/A P&ID: M-0025 Installation Detail: N/A Calibration ST: ST-2-025-404-1 Calibration Proc: ST-2-025-404-1 Functional ST: SEE REMARKS Procedure #: IC-11-00001 Response ST: N/A Other:

Mod Number:

Other:

Signal From: SEE REMARKS Signal To: SEE REMARKS Mod Rev:

Alarms & Actions: SEE REMARKS Instruction Book: N-00E-68-00024 (GEK-97146)

Input Min: 50.00 Input Max: 350.00 Input Unit: DEGF Output Min: 0 Output Max: 1 Output Unit:

HC: 0.000 Setting Tolerance: 0.00000 Leave Alone Zone: 0.01000 HC Corrected:

SP Corrected:

Add. Margin: 0.00000 MTE device Period: 731 MTE Accuracy HC

Reference:

N/A SP

Reference:

N/A Originator: SOEURN S Date: 03/06/13 Revision: 7

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 21 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 6: Vendor Data Manufacturer Code: P427 Model #: 102-9039 Function: IO 0

Reference:

REFLECTS 2 SIGMA VALUE (CALC# LE-0065)

Min 5.000e+001 Max 3.500e+002 Units DEGF Pressure 0.00 Accuracy Information Accuracy 0.75%*S*0.66 Seismic 0.0 Temperature 0.0 Radiation 0.0 Over Pressure 0.0 Humidity 0.0 Drift 0.0 Time 1.0 Power Supply 0.0 Pressure Zero 0.0 Pressure Span

0.0 Originator

KINCAID SC Date: 07/06/01 Revision: 00 ATTACHMENT 6: Vendor Data Manufacturer Code: G080 Model #: 304A3714G004 Function: S 0

Reference:

GEK-97146, NE-68-24; REFLECTS 2 SIGMA VALUES (CALC# LE-0036)

Min 5.000e+001 Max 3.500e+002 Units DEGF Pressure 0.00 Accuracy Information Accuracy 1.0%*S*0.66 Seismic 0.0 Temperature 0.0 Radiation 0.0 Over Pressure 0.0 Humidity 0.0 Drift 0.233%*S*0.66 Time

31.

Power Supply 0.0 Pressure Zero 0.0 Pressure Span

0.0 Originator

THOMAS RT Date: 04/18/94 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 22 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 7: Location Data Location Code: 015177108

==

Description:==

UNIT 1 RCIC PUMP COMPT Minimum Normal Trip LOCA Trip HELB Trip MSLB Maximum Temp 65.00 115.00 140.00 228.60 228.60 115.00 Radiation 1.380e+00 4.840e+05 2.470e+06 2.470e+06 2.470e+06 4.840e+05 Humidity 50.00 90.00 90.00 100.00 100.00 90.00 Pressure 14.69 14.69 14.70 17.64 17.64 14.69 Seismic Response Envelope: 0.00 Originator: THOMAS RT Date: 06/06/94 Revision: 00 ATTACHMENT 7: Location Data Location Code: 008289542

==

Description:==

ROOM 542, AUXILIARY EQUIPMENT ROOM Minimum Normal Trip LOCA Trip HELB Trip MSLB Maximum Temp 60.00 82.00 82.00 82.00 82.00 82.00 Radiation 5.000e-04 1.760e+02 1.890e+02 1.760e+02 1.760e+02 1.760e+02 Humidity 30.00 90.00 90.00 90.00 90.00 90.00 Pressure 14.70 14.70 14.70 14.70 14.70 14.70 Seismic Response Envelope: 0.00 Originator: CAROLAN JF Date: 03/31/93 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N023A 01 Page 23 of 23 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 8: Process Concerns Contribution to Consideration Uncertainty Sign A/N Consideration References 1 PMA Dependent Dependent 2 PEA Device Uncertainty 3 IR 4 S1 0.00341 R

N SEE SECTION 2.2.4 5 S2 6 S3 7 R1 8 R2 9 R3 ATTACHMENT 9: Device Dependencies Dependency Static Calibration Devices Function Env Pwr Cal Rad Pressure Humid Sensor TE-049-1N023A IO 0

E E

E E

0.00000 90.00 Y

TIS-025-101A S

0 U

U U

U 0.00000 90.00 N

Dependency References Env: N/A Cal: N/A Pwr: N/A Rad: N/A Cal Condition: N/A Just: Maximum Normal Humidity for Location Code

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 1 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 TABLE OF CONTENTS SECTION 1.0 PURPOSE 2.0 DESIGN BASIS 3.0 ASSUMPTIONS

4.0 REFERENCES

5.0 ATTACHMENTS 6.0 ANALYSIS 7.0 RESULTS Support Data Sheet Attachments Loop Uncertainty Session Data Calculation Results Loop Data and Configuration Loop Calibration Data Instrument Data Vendor Data Location Data Process Concerns Device Dependencies

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 2 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 1.0 PURPOSE This section includes the Objective, Limitations, Conclusions, and the Applicability Statement of this calculation.

1.1 Objective The purpose of this calculation is to determine the Allowable Value (AV), Nominal Trip Setpoint (NTSP) and Actual Trip Setpoint (ATSP) for a high temperature steam source isolation by the Leak Detection System at the Limerick Generating Station (LGS). The increasing temperature signal is sensed by channel "A" of the Reactor Core Isolation Cooling (RCIC)

Pipeway Area Leak Detection Instrument, TE-049-1N025A.

This calculation is performed utilizing environmental conditions for a High Energy Line Break (HELB) accident scenario.

A summary of the calculation results may be found in Section 7.0 of this calculation.

Other redundant/mirror loops for which the results of this calculation are applicable may be found in Section 1.4, Applicability.

1.2 Limitations This calculation is produced utilizing the harsh environmental conditions for a HELB accident scenario (See Section 2.2.5).

The appropriate use of this calculation to support design or station activities, other than those specified in Section 1.1 of this calculation, is the responsibility of the user.

1.3 Conclusions The Upper Allowable Value of 191 DEGF was calculated by the software. The Upper Allowable Value is the result displayed in Section 7.7 of this calculation.

A Lower Allowable Value of 161 DEGF was determined using the calculation results and the maximum LOCA temperature as specified in calculation -1001 (Ref.

4.18). The calculation produces an Upper Allowable Value of 191 DEGF. The Upper Allowable Value (191 DEGF) is subtracted from the Upper Analytical/Process Limit (194 DEGF) to obtain a value of 3.0 DEGF which

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 3 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 represents a two (2) sigma one sided Loop Uncertainty which does not contain any instrument drift. This amount (3.0 DEGF) is then added to the maximum LOCA temperature of 158 DEGF to obtain the Lower Allowable Value of 161 DEGF.

An analysis of the current station process setpoint values in relation to the results of this calculation has been performed and it has been concluded that the results of this calculation support the current station setpoint values.

An Insulation Resistance (IR) Calculation for TE-055-1N025B Configuration 01 determined that the IR error associated with this instrument loop was insignificant (< 0.001% of loop span).

It was therefore concluded that no IR effects would be included in this calculation. This IR Calculation resides in the IISCP software and is utilized as further justification for the position taken by PECo previously that IR concerns do not have any adverse effects on system operability at LGS.

The environmental conditions for the locations of the temperature elements for the redundant/mirror loops are the same/equivalent or not as harsh as those specified for the temperature element for this loop. Since the variables in this calculation are the same/equivalent or more restrictive, this calculation is valid for the redundant/mirror loops listed in Section 1.4.

1.4 Applicability A data evaluation has been performed in order to determine which, if any, redundant/mirror instrument loops are bound by the results of this calculation (the "base" calculation). The data evaluation results validate that this "base" calculation is applicable to the following Loop Affiliation Numbers:

• TE-049-1N025C Configuration 01

• TE-049-1N025E Configuration 01

• TE-049-1N025G Configuration 01

• TE-049-1N025J Configuration 01

• TE-049-1N025L Configuration 01

• TE-049-1N025N Configuration 01

• TE-049-1N025R Configuration 01

• TE-049-1N025T Configuration 01

• TE-049-1N025V Configuration 01

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 4 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13

• TE-049-2N025A Configuration 01

• TE-049-2N025C Configuration 01

• TE-049-2N025E Configuration 01

• TE-049-2N025G Configuration 01

• TE-049-2N025J Configuration 01

• TE-049-2N025L Configuration 01

• TE-049-2N025N Configuration 01

• TE-049-2N025R Configuration 01 The results of this "base" calculation are bounding values for the instrument loops listed above based on such factors as instrument manufacturer and model number, instrument location environmental parameters, and actual installation and use of the instrument in the measurement of the process variable.

The only difference among the seventeen redundant/mirror loops is the difference in environmental data for each loop due to the physical locations of each thermocouple, which does not introduce any additional uncertainty.

2.0 DESIGN BASIS This section includes the Technical Background and Design Input information relevant to this calculation.

2.1 Technical Background High temperature in the space in which the RCIC steam lines are located outside the primary containment could indicate a breach in a RCIC steam line. The automatic closure of the RCIC isolation valve prevents the excessive loss of reactor coolant and the release of significant amounts of radio-active material from the nuclear system process barrier. When high temperatures occur in the RCIC steam line space, the inboard and outboard steam supply isolation valves are isolated.

Pairs of temperature elements monitor for high ventilation air differential temperature and compartment ambient temperature. One sensor of each pair is associated with one of the logic divisions; the other is associated with the other division.

2.2 Design Input

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 5 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 2.2.1 Calculation -1001 Revision 5 (Ref. 4.18) supersedes calculation MISC-022 in its entirety and forms the basis for the analytical limit for all steam leak detection alarm and isolation setpoints. The calculation provides the calculated maximum temperature or different temperatures for summer and winter conditions and recommends the analytical limit for isolation setpoint based on the minimum of these two values. For HPCI Equipment Room Temperature High Isolation Setpoint, the analytical limit was revised from 200 DEGF to 194 DEGF. Furthermore, the isolation setpoint shall not be lower than the maximum LOCA temperature of 158 DEGF which is used to determine the Lower Allow Value (Ref. 4.18).

2.2.2 This calculation includes any applicable System Rerate Design/Operating Conditions and Impacts as a result of power rerate analyses per the guidelines contained in Specification NE-177 (Ref. 4.8 & 4.10).

2.2.3 Additional margin of 10.36110 DEGF was added to this calculation to support the ATSP of 180 DEGF. Of this 10.36110 DEGF, 3.00000 DEGF is assigned margin to support the IISCP Loop Leave Alone Zone (LAZ) guidelines as discussed in Section 2.2.6 and to account for the calibration practices of the instrument channels. The remaining 7.36110 DEGF is unassigned margin which represents additional conservatism that may be utilized in future analyses.

The calibration practices of the instrument channels are accounted for by providing additional margin for M&TE beyond that in Section 6.2.2. This is done to provide 1% to account for the setting tolerance of the TIS. This also provides additional margin beyond that portion allocated in Section 6.2.1 to cover the 1% required accuracy for the TE. Setting Tolerance is not provided specifically for the TE since it is not calibratable.

2.2.4 Based on engineering judgment, S1 has been included as a process consideration.

This consideration results in a conservatively rounded Allowable Value that supports the current Tech Spec revision request.

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 6 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 2.2.5 The selection of HELB environmental conditions for the performance of this calculation is based on engineering judgment and system knowledge. The environmental conditions for a HELB accident scenario are the most severe conditions to which the thermocouple sensors may be exposed and still be expected to perform their safety function.

2.2.6 The delta between the Allowable Value and the Actual Trip Set Point within this calculation is 11.0006 DEGF which meets or exceeds the IISCP Program Guidance of equal to or greater than 1.5 times the loop LAZ (Ref. 4.3, 4.17) 2.2.7 The Setting Tolerances for the TIS in this calculation were reallocated from the region between AL and AV to the region between NTSP and ATSP in order to maintain the current station setpoint.

This reallocation was accomplished by assigning 0.0 to the Setting Tolerance of each instrument and verifying that the assigned margin amount was greater than one LAZ. Since the LAZ is equal to the square root of the sum of the squares of the Setting Tolerances, verification that the assigned margin is greater than one LAZ insures that the effects of the Setting Tolerances are included in the determination of the ATSP. No specific setting tolerance was provided for the T/C since it is not calibratable.

2.2.8 All other design inputs to this calculation are documented on the Supporting Data Sheet Attachments.

3.0 ASSUMPTIONS 3.1 Assumptions Not Requiring Confirmation 3.1.1 None 3.2 Assumptions Requiring Confirmation 3.2.1 None

4.0 REFERENCES

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 7 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 4.1 Limerick Generating Station Updated Final Safety Analysis Report (UFSAR), Revision 16 (dated September 2012)

Section 5.2.5.2.2 - Detection of Abnormal Leakage Outside the Primary Containment; Section 7.6.1.3 - Leak Detection System -

Instrumentation and Controls; 4.2 Limerick Generating Station Technical Specifications, Unit 1, Amendment 106, Revision 208 and Unit 2 Amendment 51, Revision 169 Table 3.3.2-2 Item 5.f.

4.3 IISCP-PP-93-001, Revision 1 - Program Plan for the Implementation of Phase I of the PECo Improved Instrument Setpoint Control Program (IISCP) (Setpoint Methodology Reference).

4.4 M-171, Revision 0017, Limerick Generating Station Units 1&2 Environmental Service Conditions Specification. (Location Data reference).

4.5 IISCP-LG-CALSHEET Limerick Generating Station Instrument Setpoint Control Program - Calsheet.

4.6 Component Records List (PIMS CRL) 4.7 Master Calibration Sheets generated in accordance with PECo procedure IC-11-50014 for TE-049-1N025A dated 07/22/88, & TIS-025-101A dated 06/10/92.

4.8 Philadelphia Electric Letter from G.C. Storey to G.R. Hull General Electric Company, subject "Final OPL-3 for Limerick ARTS/MELLLA Analysis". This document contains Limerick 1 Reload 4(cycle 5) Resolved OPL-3 Forms that include ARTS/MELLLA at rerate conditions Dated 03/09/93. (Power Rerate Information Reference).

4.9 General Electric Design Specification Data Sheets (DSDS) A61-4040-L-004, Revision 0005 (Design Basis Reference ).

4.10 NE-177, Revision 0001, Nuclear Safety Related Specification for Limerick Generating Station Units 1&2 Power Rerate Operating Conditions (Power Rerate Information Reference).

4.11 Deleted

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 8 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 4.12 Calculation -2208 Revision 0003 "RHR Compartment Pressurization due to Steam Line Break to RHR Hx" (Design Basis Reference).

4.13 Calculation LM-0400 Revision 0005 "HPCI and RCIC Pump Room Temperature Response Following a Small Break LOCA, Normal & Power Rerate Conditions" (Design Basis Reference).

4.14 Calculation LE-0036 Revision 0001 "Equivalency Evaluation between G.E. Numac LDM and Riley Temperature Instrumentation to demonstrate Accuracy and Support the use of existing Setpoints for the Steam Leak Detection System, LGS Units 1 and 2" (Vendor Information Reference) 4.15 Modification P-00212 Revision 0000 "HPCI/RCIC EQ Upgrade" (Design Basis Reference).

4.16 EQ Binder P-300 Revision 0008 "Pyco Temperature Elements"(Vendor Information Reference) 4.17 CC-MA-103-2001 Revision 2 "Setpoint Methodology for PBAPS & LGS" 4.18 Calculation -1001 Revision 0005 "Compartment Temperature Transients for Steam and Water Leaks" (Analytical Limit Reference and Maximum LOCA Temperature).

4.19 ECR LG 10-00191 Revision 000 "Margin Improvement Needed in Steam Leak Detection Tech Spec" 4.20 ECR LG 12-00344 Revision 000 "Margin Improvement Needed in Steam Leak Detection Tech Spec" 5.0 ATTACHMENTS 5.1 See Supporting Data Sheet Attachments located within this calculation.

6.0 ANALYSIS 6.1 Loop Effects 6.1.1 Loop ID No.: TE-049-1N025A Configuration: 01 6.1.2 Loop Function: STEAM LEAK DETECTION RCIC PIPEWAY 6.1.3 Configuration

Description:

HI TEMP TRIP 6.1.4 Loop Instrument List

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 9 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 Device ID Number Function Number 1 TE-049-1N025A IO 0 2 TIS-025-101A S 0 6.1.5 Device Dependency Device Environment Power Calibration Radiation 1 X X X X 2 Z Z Z Z 6.1.6 Device Dependency References Environmental:

N/A Power:

N/A Calibration:

N/A Radiation:

N/A 6.1.7 PMA and PEA Effects Type Magnitude A/N Sign PMA PEA IR References PMA:

PEA:

IR:

6.1.8 Miscellaneous Random and Bias Effects Dependent Dependent Type Magnitude Instrument Uncertainty A/N Sign S1 0.00341 N

R S2 S3 R1 R2 R3 References S1:

SEE SECTION 2.2.4 S2:

S3:

R1:

R2:

R3:

6.1.9 Basis Point of Interest:

180.0000 Accident:

HELB Pressure Effects:

Independent 6.2 Device Effects 6.2.1 Device Accuracy (CA)

CA = va/S or Setting Tolerance (whichever is greater)

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 10 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 Where:

va

= vendors stated accuracy S

= instruments calibrated span R

= instruments range 6.2.1.1 TE-049-1N025A va = 0.75%*S*0.66 S = 300 R = 3.500e+002 Setting tolerance = 0.00000 CA = 0.00495 6.2.1.2 TIS-025-101A va = 1.0%*S*0.66 S = 300 R = 3.500e+002 Setting tolerance = 0.00000 CA = 0.00660 6.2.2 Device M&TE Allowance MTE = CA + margin Where:

CA

= device calibration accuracy margin = additional margin supplied by calculation originator 6.2.2.1 TE-049-1N025A CA = 0.00495 Margin = 0.00000 MTE = 0.00495 6.2.2.2 TIS-025-101A CA = 0.00660 Margin = 0.00000 MTE = 0.00660 6.2.3 Device Drift D = vd * ( (tc

• 1.25 / td) ) / s Where:

vd

= vendors stated drift specification td

= vendors drift time specification tc

= instruments calibration period S

= instruments calibrated span R

= instruments range 6.2.3.1 TE-049-1N025A vd = 0.0 td = 1.0 tc = 731 S = 300 R = 3.500e+002

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 11 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 D = 0.00000 6.2.3.2 TIS-025-101A vd = 0.233%*S*0.66 td = 31.

tc = 731 S = 300 R = 3.500e+002 D = 0.00835 6.2.4 Device Static Pressure SPE = (SPz 2 + SPs

2)

(for independent pressure effects)

SPE = SPz + SPs (for dependent pressure effects)

SPz = SPz

• lPo - Pcl / S SPs = SPs

• lPo - Pcl / S Where:

SPz

= vendors stated zero static pressure effect SPs

= vendors stated span static pressure effect Po

= normal operating pressure Pc

= calibrated pressure S

= instruments calibrated span R

= instruments range Note: Static pressure effects are relevant to sensors only.

6.2.4.1 TE-049-1N025A SPS = 0.0 SPZ = 0.0 Po = 0.00 Pc = 0.00000 S = 300 R = 3.500e+002 SPs = 0.00000 SPz = 0.00000 SPE = 0.00000 6.2.4.2 TIS-025-101A Sensor is not 'Y' (see attachment 9).

6.2.5 Device Over Pressure OPE = vope

• lPa - Pml / S (for linear devices)

OPE = vope / S (for non-linear devices)

Where:

vope = vendors stated over pressure effect Pa

= maximum operating pressure Pm

= instruments design pressure S

= instruments calibrated span R

= instruments range X

= lPa - Pml Note: Over pressure effects are relevant to sensors only, where the maximum operating pressure is greater than instruments design pressure.

6.2.5.1 TE-049-1N025A

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 12 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 vope = 0.0 Pa = 0.00 Pm = 0.00 S = 300 R = 3.500e+002 OPE = 0.00000 6.2.5.2 TIS-025-101A Sensor is not 'Y' (see attachment 9).

6.2.6 Device Drift Temperature DTE = vte

• dT / S (for linear devices)

DTE = vte / S (for non-linear devices)

Where:

vte

= vendor specified temperature effect dT

= (Normal Temp - 68 F)

S

= instruments calibrated span R

= instruments range 6.2.6.1 TE-049-1N025A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 122.00 DTE = 0.00000 6.2.6.2 TIS-025-101A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 82.00 DTE = 0.00000 6.2.7 Device Accuracy Temperature ATE = vte

• dT / S (for linear devices)

ATE = vte / S (for non-linear devices)

Where:

vte

= vendor specified temperature effect dT

= laccident temperature - normal temperaturel S

= instruments calibrated span R

= instruments range 6.2.7.1 TE-049-1N025A vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 122.00 Accident temp = 272.19 ATE = 0.00000 6.2.7.2 TIS-025-101A

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 13 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 vte = 0.0 S = 300 R = 3.500e+002 Normal temp = 82.00 Accident temp = 82.00 ATE = 0.00000 6.2.8 Device Humidity HE = dH

• vhe / S (for linear devices)

HE = vhe / S (for non-linear devices)

Where:

vhe

= vendors stated humidity specification S

= instruments calibrated span R

= instruments range dH

= laccident humidity - normal humidityl 6.2.8.1 TE-049-1N025A vhe = 0.0 S = 300 R = 3.500e+002 Accident hum = 100.00 Normal hum = 90.00 HE = 0.00000 6.2.8.2 TIS-025-101A vhe = 0.0 S = 300 R = 3.500e+002 Accident hum = 90.00 Normal hum = 90.00 HE = 0.00000 6.2.9 Device Accuracy Radiation ARE = vre

• DeltaRad / S (for linear devices)

ARE = vre / S (for non-linear devices)

Where:

vre

= vendor specified radiation effect DeltaRad

= (accident radiation - normal radiation)

S

= instruments calibrated span R

= instruments range 6.2.9.1 TE-049-1N025A vre = 0.0 S = 300 R = 3.500e+002 Accident rad = 5.55000 Normal rad = 0.90500 ARE = 0.00000 6.2.9.2 TIS-025-101A Environmental qualifier is not 'Y' (see attachment 5).

6.2.10 Device Seismic

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 14 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 VSE = SRS

• vse / S (for linear devices)

VSE = vse / S (for non-linear devices)

Where:

vse

= vendors stated seismic specification S

= instruments calibrated span R

= instruments range SRS

= seismic response envelope 6.2.10.1 TE-049-1N025A Seismic class is not '1' in Pims (see attachment 5).

6.2.10.2 TIS-025-101A Seismic class is not '1' in Pims (see attachment 5).

6.2.11 Device Power PSE = pss

• pse / S Where:

pse

= vendors stated power supply specification pss

= device power supply stability S

= instruments calibrated span R

= instruments range 6.2.11.1 TE-049-1N025A pse = 0.0 S = 300 R = 3.500e+002 pss = 0.000 PSE = 0.00000 6.2.11.2 TIS-025-101A pse = 0.0 S = 300 R = 3.500e+002 pss = 12.000 PSE = 0.00000 7.0 RESULTS 7.1 Loop Accuracy Allowance (AL)

AL_norm

= A + OP + SP + PE AL_accid

= AL_norm + S (for S > TE + RE + AHE)

AL_accid

= AL_norm + TE + RE + AHE (for S TE + RE + AHE)

Where:

A

= CA 2

TE

= ATE 2

OP

= OPE 2

SP

= SPE 2

RE

= ARE 2

AHE

= HE 2

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 15 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 S

= VSE 2

PE

= PSE 2

AL

= 0.00007 7.2 Loop Drift Allowance (DL)

DL = DE + DT Where:

DE

= D 2

DT

= DTE 2

DL

= 0.00007 7.3 Loop Calibration Allowance (CL)

CL = V + M Where:

V

= (setting tolerance) 2 M

= MTE 2

CL

= 0.00007 7.4 TLU (Positive)TLUp = [IR + PMAp + PEAp + PCp + PMAo + PEAo + Pco +

(AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span (Negative)TLUn = [- PMAn - PEAn - PCn - PMAo - PEAo - PCo + -

(AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span All other variables as previous defined.

TLUp = 4.42412 DEGF TLUn = -4.42412 DEGF 7.5 NTSP (Increasing) NTSP = limit + [- PMAn - PEAn - PCn - PMAo - PEAo - PCo +

(1.645 / sigma) * - (AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span (Decreasing) NTSP = limit + [IR + PMAp + PEAp + PCp + PMAo + PEAo + PCo

+ (1.645 / sigma) * (AL + CL + DL + PMAr + PEAr + PCr) ]

• Loop span Where:

limit = loop analytical or process limit limit = 194.00 DEGF sigma = 2 NTSP = 190.36116 DEGF 7.6 ATSP (Increasing) ATSP = NTSP + margin (Decreasing) ATSP = NTSP - margin

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 16 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 Where:

margin = additional margin supplied by calculation originator margin = -10.36110 ATSP = 180.00006 DEGF 7.7 Allowable Value (Decreasing) AV = limit + [IR + PMAp + PEAp + PCp + PMAo + PEAo + Pco +

(1.645 / sigma) * (AL + CL + PMAr + PEAr + PCr) ]

• Loop span (Increasing) AV = limit + [- PMAn - PEAn - PCn - PMAo - PEAo - Pco +

(1.645 / sigma) * - (AL + CL + PMAr + PEAr + PCr) ]

• Loop span All other variables as previously defined.

AV = 191.00066 DEGF

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 17 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 1: Session Data Station: LG Unit: 1 Responsible Branch: LEDE Safety Related (Y/N): Y

==

Description:==

STEAM LEAK DETECTION RCIC PIPEWAY System Number: 049 Structure: RX ENCL Component: TE-49-1N025A TIS Revision

Description:

REVISE AL PER -1001 REV 5 (ECR 10-00191)

Vendor Calc Number: N/A Revision: NA Other Calculations: N Provides info TO: N/A Receives info FROM: LE-0036

-1001 LM-0400

-2208 Supercedes: N/A

1. Accident type:

HELB

2. Pressure effects dependent or independent (I/D):

Independent

3. Process increasing, decreasing or neither (I/D/N):

Increasing

4. Input point of interest:

180.0000

5. Include additional margin for actual setpoint calculation:

Yes

6. Additional margin to be used:

-10.36110

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 18 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13

Calculation Results Temperature Device F N Accuracy Normal Accident Humidity Tol Pwr Supp TE-049-1N025A IO 0 0.00495 0.00000 0.00000 0.00000 0.00000 0.00000 TIS-025-101A S 0 0.00660 0.00000 0.00000 0.00000 0.00000 0.00000 Device F N SPE Rad Acc M&TE Drift Ovr Pres Seismic TE-049-1N025A IO 0 0.00000 0.00000 0.00495 0.00000 0.00000 N/A TIS-025-101A S 0 N/A N/A 0.00660 0.00835 N/A N/A Process Concerns Normal Accident Positive Negative Offsetting Positive Negative Offsetting PMA 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 PEA 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 IR 0.00000 Other 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 Loop Results Normal Accident TLU*

4.42412

-4.42412 4.42412

-4.42412 AL 0.00007 0.00007 Increasing Decreasing Increasing Decreasing NTSP*

190.36116 N/A 190.36116 N/A AV*

191.00066 N/A 191.00066 N/A ATSP*

180.00006 N/A 180.00006 N/A Additional Margin: -10.36110 DL: 0.00007 CL: 0.00007

• These values are in DEGF

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 19 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 3: Loop Data Loop Number: TE-049-1N025A Instruments Function Num 1

2 3

4 5

6 7

8 9

10 TE-049-1N025A IO 0

X X

TIS-025-101A S

0 X

TIS-025-101A IO 0

X 0

0 0

0 0

0 0

Configuration Descriptions 1: HI TEMP TRIP 6:

2: TEMP IND 7:

3:

8:

4:

9:

5:

10:

Loop

Description:

STEAM LEAK DETECTION RCIC PIPEWAY Originator: SOEURN S Date: 03/08/13 Revision: 00 ATTACHMENT 4: Loop Calibration Data Loop Number: TE-049-1N025A Configuration: 01 Units Min Max Normal Trip Process Temperature 0.00 0.00 0.00 0.00 Process Radiation 0.000e+000 0.000e+000 0.000e+000 0.000e+000 Process Humidity 0.00 0.00 0.00 0.00 Process Pressure 0.00 0.00 0.00 0.00 Loop Span DEGF 50.00 350.00 Sigma: 2 Value Units Value Setpoint 180.00 DEGF Loop Setting Limit 0.000 Reset Loop Leave Alone Zone 3.000 Allowable 191.00 DEGF Loop Calculation Acc 0.000 Design/safety Limit Calibration Frequency 731 Analytical/Proc Limit 194.00 DEGF Originator: SOEURN S Date: 03/08/13 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 20 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 5: Instrument Data Component Id: TE-049-1N025A Facility: LG Unit: 1 System: 025

==

Description:==

STEAM LEAK DETECTION RCIC PIPEWAY LEAK DET -- SHOWN ONP&ID 25 Function: IO 0 Type: I E Manufacturer Code: P427 Model #: 102-9039 Location: 016217309 Elevation: 217 Area: 016 Serial #:

QA Class: Q Op Time: 1 Service Life: 000 EQ: Y Seismic Class:

Tech Spec: Y Tech Spec Ref: T3.3.2-2.5.F Transient: NA Reg Guide 1.97: N Power Supply Reg: 0.000 Tolerance: 0.000 Loop Number: TE-049-1N025A Loop Diagram: N/A Computer Address: N/A P&ID: M-0025 Installation Detail: N/A Calibration ST: ST-2-025-404-1 Calibration Proc: ST-2-025-404-1 Functional ST: ST-2-049-613-1 Procedure #: IC-11-00001 Response ST: N/A Other:

Mod Number:

Other:

Signal From: PROCESS Signal To: TIS-025-101A CH A5-2 Mod Rev:

Alarms & Actions: N/A Instruction Book:

Input Min: 50.00 Input Max: 350.00 Input Unit: DEGF Output Min: 0.391 Output Max: 8.064 Output Unit: MVDC HC: 0.000 Setting Tolerance: 0.00000 Leave Alone Zone: 0.01000 HC Corrected:

SP Corrected:

Add. Margin: 0.00000 MTE device Period: 731 MTE Accuracy HC

Reference:

N/A SP

Reference:

N/A Originator: SOEURN S Date: 03/08/13 Revision: 1

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 21 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 5: Instrument Data Component Id: TIS-025-101A Facility: LG Unit: 1 System: 025

==

Description:==

STEAM LEAK DETECTION TEMP MONITOR DIV. 1/A1 Function: S 0 Type: I S Manufacturer Code: G080 Model #: 304A3714G004 Location: 008289542 Elevation: 289 Area: 008 Serial #:

QA Class: Q Op Time: N/A Service Life: 000 EQ: N Seismic Class:

Tech Spec: Y Tech Spec Ref: T3.3.2-2.5 Transient: NA Reg Guide 1.97: N Power Supply Reg: 120.000 Tolerance: 12.000 Loop Number: SEE REMARKS Loop Diagram: N/A Computer Address: N/A P&ID: M-0025 Installation Detail: N/A Calibration ST: ST-2-025-404-1 Calibration Proc: ST-2-025-404-1 Functional ST: SEE REMARKS Procedure #: IC-11-00001 Response ST: N/A Other:

Mod Number:

Other:

Signal From: SEE REMARKS Signal To: SEE REMARKS Mod Rev:

Alarms & Actions: SEE REMARKS Instruction Book: N-00E-68-00024 (GEK-97146)

Input Min: 50.00 Input Max: 350.00 Input Unit: DEGF Output Min: 0 Output Max: 1 Output Unit:

HC: 0.000 Setting Tolerance: 0.00000 Leave Alone Zone: 0.01000 HC Corrected:

SP Corrected:

Add. Margin: 0.00000 MTE device Period: 731 MTE Accuracy HC

Reference:

N/A SP

Reference:

N/A Originator: SOEURN S Date: 03/06/13 Revision: 7

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 22 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 6: Vendor Data Manufacturer Code: P427 Model #: 102-9039 Function: IO 0

Reference:

REFLECTS 2 SIGMA VALUE (CALC# LE-0065)

Min 5.000e+001 Max 3.500e+002 Units DEGF Pressure 0.00 Accuracy Information Accuracy 0.75%*S*0.66 Seismic 0.0 Temperature 0.0 Radiation 0.0 Over Pressure 0.0 Humidity 0.0 Drift 0.0 Time 1.0 Power Supply 0.0 Pressure Zero 0.0 Pressure Span

0.0 Originator

KINCAID SC Date: 07/06/01 Revision: 00 ATTACHMENT 6: Vendor Data Manufacturer Code: G080 Model #: 304A3714G004 Function: S 0

Reference:

GEK-97146, NE-68-24; REFLECTS 2 SIGMA VALUES (CALC# LE-0036)

Min 5.000e+001 Max 3.500e+002 Units DEGF Pressure 0.00 Accuracy Information Accuracy 1.0%*S*0.66 Seismic 0.0 Temperature 0.0 Radiation 0.0 Over Pressure 0.0 Humidity 0.0 Drift 0.233%*S*0.66 Time

31.

Power Supply 0.0 Pressure Zero 0.0 Pressure Span

0.0 Originator

THOMAS RT Date: 04/18/94 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 23 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 7: Location Data Location Code: 016217309

==

Description:==

UNIT 1 CNTMT ISOLATION VALVE COMPT EL 217' Minimum Normal Trip LOCA Trip HELB Trip MSLB Maximum Temp 65.00 122.00 120.00 272.19 272.19 122.00 Radiation 2.580e+00 9.050e+05 5.550e+06 5.550e+06 5.550e+06 9.050e+05 Humidity 50.00 90.00 90.00 100.00 100.00 90.00 Pressure 14.69 14.69 14.70 16.22 16.22 14.69 Seismic Response Envelope: 0.00 Originator: THOMAS RT Date: 06/06/94 Revision: 00 ATTACHMENT 7: Location Data Location Code: 008289542

==

Description:==

ROOM 542, AUXILIARY EQUIPMENT ROOM Minimum Normal Trip LOCA Trip HELB Trip MSLB Maximum Temp 60.00 82.00 82.00 82.00 82.00 82.00 Radiation 5.000e-04 1.760e+02 1.890e+02 1.760e+02 1.760e+02 1.760e+02 Humidity 30.00 90.00 90.00 90.00 90.00 90.00 Pressure 14.70 14.70 14.70 14.70 14.70 14.70 Seismic Response Envelope: 0.00 Originator: CAROLAN JF Date: 03/31/93 Revision: 00

LOOP UNCERTAINTY CALCULATION Loop Number: TE-049-1N025A 01 Page 24 of 24 Originator: SOEURN S Date: 03/31/13 Rev: A Reviewer: WEINGARD RD Date: 04/05/13 Approver: GEORGE RT Date: 04/22/13 ATTACHMENT 8: Process Concerns Contribution to Consideration Uncertainty Sign A/N Consideration References 1 PMA Dependent Dependent 2 PEA Device Uncertainty 3 IR 4 S1 0.00341 R

N SEE SECTION 2.2.4 5 S2 6 S3 7 R1 8 R2 9 R3 ATTACHMENT 9: Device Dependencies Dependency Static Calibration Devices Function Env Pwr Cal Rad Pressure Humid Sensor TE-049-1N025A IO 0

X X

X X

0.00000 90.00 Y

TIS-025-101A S

0 Z

Z Z

Z 0.00000 90.00 N

Dependency References Env: N/A Cal: N/A Pwr: N/A Rad: N/A Cal Condition: N/A Just: Maximum Normal Humidity for Location Code