ML102510138

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0000-0105-0835-R2 Pilg-SRVs-T506-ATWS Hipres RPT-Calc-2010, Revision Number: 2, Instrument Limits Calculation Entergy Operations Inc. Pilgrim Nuclear Power Station ATWS High Pressure Recirculation Pump Trip (Rpt), Enclosure 3 to Attachment
ML102510138
Person / Time
Site: Pilgrim
Issue date: 03/31/2010
From: Poulos A
GE-Hitachi Nuclear Energy Americas
To:
Office of Nuclear Reactor Regulation
References
TAC ME3543 2.10.039, DRF: 0000-0105-0829
Download: ML102510138 (16)
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ENCLOSURE 3 TO ATTACHMENT A GEH Report, 0000-0105-0835-R2, Pilgrim Nuclear Power Station, ATWS High Pressure Recirculation Pump Trip (RPT)". Rev. 2, March 2010 GE Non-Proprietary Information (15 Dages)

GE Hitachi Nuclear Energy HITACHI 3901 Castle Hayne Road Wilmington, NC 28401 0000-0105-0835-R2 Pilg-SRVs-T506-ATWS HiPres RPT-Calc-2010 Revision Number: 2 DRF: 0000-0105-0829 March 2010 Instrument Limits Calculation Entergy Operations Inc.

Pilgrim Nuclear Power Station ATWS High Pressure Recirculation Pump Trip (RPT)

[Signed electronically as part of the Independent Verification process.]

Preparers:

A. Poulos Verifier:

R. E. Miller Approved:

B. Nelson

I 0000-0105-0835-R2 Pilg-SRVs-T506-ATWS-HiPres RPT-Calc-2010 IMPORTANT NOTICE REGARDING CONTENTS OF THIS REPORT Please Read Carefully A. Disclaimer The only undertakings of GE Hitachi Nuclear Energy (GEH) respecting information in this document are contained in the contract between Entergy Nuclear Operations, Inc.

(ENOI) and GEH regarding setpoint changes for the Pilgrim Nuclear Power Station (PNPS; Pilg). Nothing contained in this document shall be construed as changing the applicable contract. The use of this information by anyone other than ENOI for Pilg, is not authorized. With respect to any unauthorized use, GEH makes no representation or warranty, and assumes no liability as to the completeness, accuracy or usefulness of the information contained in this document, or that its use may not infringe privately owned rights.

Page 2 of 15

I 0000-0105-0835-R2 Pilg-SRVs-T506-ATWS-HiPres RPT-Calc-2010 REVISION

SUMMARY

RevRequired Changes to Achieve: Revision 0 Initial Issue 1 a. Changed current Allowable Value (AV) to be 1175 +/- 5 psig, and the associated sheet of Ref. 3.1.

b. Changed Process Element to "none" and added reference.
c. Changed Pressure Transmitter Model ID No. to 1151 GP9 E22TOO03BP.
d. Identified Pressure Transmitter Mounting position Effect, Zero Shift as a 3 Sigma error.
e. Stated that Calibration Tool and Calibration Stand errors are "Not required" and referred to Comment 2.
f. Added Revision 3 to Ref. 3.2 [Pilgrim Nuclear Power Station Nuclear Station DIR response]..
g. Made miscellaneous editorial changes, including deleting unused boxes.
h. Changed items previously identified as "Not provided" to "Not required".

2 a. Changed current Nominal Trip Setpoint to be 1175 psig, and the Ref. to 3.2.

b. Changed the identification of the analysis setpoint to be an Allowable Value (AV), and added Comment 15 to explain what Task T0902 uses.
c. Identified that the current Operational Limit still applies.
d. Changed the new resulting Nominal Trip Setpoint (NTSP).
e. Deleted the Application Specific Setpoint Adjustments table that showed margins from the AL, as that does not apply.
f. Updated Ref. 5.1.
g. Made miscellaneous editorial changes.

Contents:

This document is a supplemental analysis data sheet to Reference 1. Included in this document in sequential order are:

  • The setpoint function for the system,
  • The setpoint function analyses inputs and the source reference of the inputs,
  • The device in the setpoint function instrument loop,
  • The component analysis inputs and input sources,
  • The calculated results,
  • Input comments and result recommendations,
  • References.

Page 3 of 15

IO000-0106-0835-R2 PlIg-SRVs-T506-ATWS-HiPres RPT-Calc-20110

1. Function: ATWS High Pressure Recirc Pump Trip Setpoint Characteristics: Definition Reference(s)

Limiting event for the setpoint:

Initiate Recirculation Pump Trip (RPT) and Alternate Rod Insertion (ARI) when the Reactor Event Protection: pressure exceeds the switch setpoint, to provide a back-up method for controlling reactivity in the unlikely event that the Reactor fails to scram when required. Ref. 3.1 (Page 3)

Function After Earthquake 17 Required 0 Not Required Ref. 3.1 (Page 17)

Setpoint Direction 0 Increasing U Decreasing Ref. 3.1 (Page 23)

S Single 0 Multiple Ref. 3.2 (Section Single or Multiple Channel (Sec.) 4.1, Item 8J)

LER Calculation Basis if Standard (Conservative) LER Calculation 0, or Ref. 1 (Sec. 5.3); Ref.

Multiple Channel Configuration Specific LER Calculation U- 2 (Sec. 1.2.3).

Trip Logic for Configuration Specific LER Calculation n/a n/a: not applicable BIO: background info only.

Value/Equatlon Reference(s)

Value Value Current Function Limits: Present Post ..

Calculation Modification ~

________________ _ ___ _____ _____ Condition _ _ _ _ _ _ _ _ _ _ _ _

Comrmenl 15 1205 psig Upper Ref 3.1 (Pages Analytical Limit 1145 psig Lower ______________ 9. 15.40) ____________

1220 psig Upper Tech Spec Allowable Ref. 3.1 (Sheet Ref. 5. 1 Value 1175 k 5psig ________ 2) ______

- Ref.3.2 (Sec

  • 4.1 Item 2) ~

Results inSection <.

Setpoint . I..

1L5 psig 3_ _

Operational Limit 1040 psig Ref. 3.1 (Page 15, 23, 40)

Sigma if Plant Data: Value not 2 Reference(s)

Primary Element Accuracy n/a Ref.3.1 (Page 18)

Process Measurement -0.003% SP Ref.3.1 (Page 30 Note 7),

Accuracy (PMA) (Bias) n/a Comment 13 Components (or Devices) in Setpoint Function Instrument Loop:

  • Condensing Pot
  • Pressure Transmitter
  • Analog Trip Module (Master Trip Unit)

Page 4 of 15

1 0000-0105-0835-112 Pilg-SRVs-T.506-ATWS-HiPres RPT-Calc-2010

2. Components:

2.1 Pressure Transmitter Component Information: Value/Equation Reference(s)

Plant Instrument ID No. PT263-122A,B,C,D Ref. 3.1 (Page12)

Instrument vendor Rosemount Ref. 3.1 (Page14)

Model ID No. (including Range Code) 1151 GP9 E22T0003BP Ref. 3.1 (Paget4)

C2275, C2276, C2275, C2276 Plant Location(s) Reactor Building Elevation 51' Ref. 3.1 (Pages 12, 32)

Process Element none Ref.3.1 (Page 18)

Inputs:

Sigma If Vendor Specifications: Value I Equation not 2 Reference(s)

Top of Scale 1513 psig (20 mAdc) n/a Ref. 3.1 (Pages 15, 16)

Bottom of Scale 13 psig (4 mAdc) n/a Ref. 3.1 (Pages 15, 16)

Upper Range Limit (URL) 3000 psig n/a Ref. 3.1 (Page 16)

Ref. 3.1 (Page 18), Ref. 6.1, Accuracy +/- 0.25% Span 3 Comment 7

+ (0.5% URL + 0.5% 3 Ref. 6.2 (Page 3)

Temperature Effect Span)/100 degF Seismic Effect n/a Ref. 3.1 (Page 17)

Ref. 3.1 (Pages 17, 28 Note 1),

Radiation Effect n/a Ref. 3.2 (Sec. 4.1 item 9B)

Humidity Effect Negligible Comment 4

< 0.005% SpanNolt Power Supply Effect = +/- 0.375 psig 3 Ref. 3.1 (Pages 23, 32)

RFI/EMI Effect Negligible Comment 4 Ref. 3.1 (Pages 17, 18), Comment Insulation Resistance Effect Negligible 4 Ref. 6.1, Ref. 6.2, Ref. 3.2 (Sec.

Over-pressure Effect Not required 4.1 Item 8C), Comment 2 Mounting Position Effect:

  • Span Effect . No effect Ref. 6.2 (Page 4)
  • Zero Shift
  • 1 in H20 3 Ref. 6.2 (Page 4)

(Calibrated Out) Ref. 3.2 (Sec. 4.1 item 9A)

Static Pressure Effect n/a Ref.3.1 (Page 20), Comment 5 Page 5 of 15

1O000-01105-0835-112 Pilg-SRVs-T506-ATWS-HiPres RPT-Calc-20110 2.1 Pressure Transmitter (cont'd)

T Plant Data: Value Reference(s)

Calib Temperature Range 60 - 105 OF Ref. 3.2 (Sec. 4.1 Item 8F.)

60 - 105 OF Ref. 3.1 (Page 32), Ref. 3.2 Normal Temperature Range. (Sec. 4.1 Item 8F.)

Trip Temperature range 60 - 105 OF Ref. 3.2 (Sec. 4.1 Item 8F.)

Plant Seismic value Not required Comment 4 Plant Radiation value Not required Comment 4 Plant Humidity value Not required Comment 4 Power Supply Variation value 23 V to 28 V Ref. 3.1 (Page 32)

RFI/EMI value Not required Comment 4 Over-pressure value 1500 psig Ref. 3.2 (Sec. 4.1 Item 8D)

Static Pressure value n/a Comment 5 Sigma Drift: Value if not 2 Reference(s)

Current Calib. Interval 24 Mo. ijlncludes extra 25% Crnnt 2 Refegs n/aItvl4ox Ref. 3.1 (Pages 4, 16,)39)

Desired Calib. Interval 30 Mo. 0~lncludes extra 25% n/a Ref. 3.1 (Pages 4, 16, 39)

Drift Source El Vendor 0 Calculated n/a Ref. 1 (Sec. 4.3.1)

+/- 0.25% URL / 6 months Ref.3.1 (Pages 21,32 Note 12),

Drift Value = +/- 16.770510 psig Comment 9, Comment 11 Page 6 of 15

I 0000-0105-0835-R2 PiIg-SRVs-T506-ATWS-HiPres RPT-Calc-2010 2.1 Pressure Transmitter (cont'd)

Calibration: Sigma If

............ _Value I equation not 3 Referencets) 10.04 mA Ref. 3.1 (Pages 21, 39),

As Left Tolerance +/- 025% SP Comment 3

+/- 0.04 mA Leave Alone Tolerance +/- 025% SP Ref. 3.1 (Pages 4, 39)

Input Calibration Tool: Not required Ref. 3.1, Comment 2 Ref. 3.1 (Pages 4, 18. 39),

Accuracy +/- 0.25% SP Comment 3 Resolution / Readability Not required ......... Comment 2 Minor Division Not required n/a Comment 2 Upper Range Not required nia Comment 2 Temperature Effect Not required Comment 2 Input Calibration Standard: Not required _____"__ Ref, 3.1. Comment 2 Included in Input Calibration Accuracy Tool Accuracy Ref, 3.1 (Pages 4, 39)

Resolution / Readability Not required Co,_Cmment 2 Minor Division Not required n/a Comment 2 Upper Range Not required n/a Comment 2 Temperature Effect Not required Comment 2 Output Calibration Tool: Not required Ref. 3..1, Comment 2 Included in Input Calibration Accuracy Tool Accuracy Ref 3.1 (Pages 4, 39)

Resolution / Readability Not required Comment 2 Minor Division Not required n/a Comment 2 Upper Range .Not ruired n/a Comment 2 Temperature Effect Not required Comment 2 Output Calibration Standard: Not required Ret 3.1, Comment 2 Included in Input Calibration Accuracy Tool Accuracy -Ref, 3.1 (Pages 4, 39)

Resolution I Readability Not required Comment 2 Minor Division Not required n/a Comment 2 Upper Range Not required n/a Comment 2 Temperature Effect Not required Comment 2 Page 7 of 15

I 0000-0105-0835-R2 Pilg-SRVs-T506-ATWS-HiPres RPT-Calc-2010 2.2 Analog Trip Module (Master Trip Unit)

Component Information: Value/Equation Reference(s)

Ref.3.1 (Pages 12, Plant Instrument ID No. PIS263-123A, 123B, 123C and 123D 14)

Instrument vendor GE Ref.3.1 (Page 14)

Model ID No. (including Range Code) 184C5988G112 Ref.3.1 (Page 14)

Plant Location(s) C2277, C2278, C2277, C2278 Ref.3.1 (Page 12)

Process Element n/a Inputs:

Sigma If Vendor Specifications: Value I Equation not 2 Reference(s)

Ref. 3.1 (Page 15, Attachment 2 Top of Scale 1500 psig (20 mAdc) n/a Page 9)

Ref. 3.1 (Page 15, Attachment 2 Bottom of Scale 0 psig (4 mAdc) n/a Page 9) 1500 psig Upper Range Limit (Full Scale) n/a Ref. 3.1 (Attachment 2 Page 9)

Accuracy:

Trip Repeatability +/- 0.13% Full Scale (FS) Ref. 3.1 (Pages 19, 31, (to 113.5 'F) Attachment 1 Page 3, Attachment 3 Page 2 Sec. 2.3),

+/- 0.20% FS Comment 6, Comment 12 (113.5 to 142.5 'F)

Ref.3.1 (Pages 19, 31, Attachment 3 Page 2 Sec. 2.3),

Temperature Effect Included in Accuracy Comment 6 Seismic Effect n/a Ref. 3.1 (Page 17)

Radiation Effect Not required Comment 4 Humidity Effect Not required Comment 4 Power Supply Effect n/a Ref. 3.1 (Pages 19, 31)

RFI/EMI Effect Negligible Comment 4 Insulation Resistance Effect Negligible Comment 4 Over-pressure Effect n/a Comment 5 Static Pressure Effect n/a Comment 5 Page 8 of 15

I 0000-0105-0835-R2 PIlg-SRVs-T506-ATWS-HiPres RPT-CaIc-2010 2.2 Analog Trip Module (Master Trip Unit) (cont'd)

Plant Data: Value Referencel'si Clanib.tepauRae6.3.2.( V 4 Iatem Calib Temperature Range 76 - 105 OF Ref. 3.2 (Sec. 4.1 Item 8H)

Normal Temperature Range 76 - 105 OF Ref. 3.2 (Sec. 4.1 Item 8H).

Trip Temperaturluge 60 -r 105 F Ref. 3.2 (Sec. 4.1 Item 8G)

Plant Seismic value Not required Comment 4 Plant Radiation value Not required Comment 4' Plant Humidity vavalue Not required Comment 4 Power Supply Variation value require Not ibed Comment 4 Not required (Negligible)

RFI/EMl value (mild environment) Comment 4 Over-pressure value n/a Comment 5 Static Pressure value n/a Comment 5 Sigma If Reference(s)

Drift: Value Sigma If Reference(s) not 2 Current Calib. Interval 3 Months rllncludes extra 25% n/a Ref. 3.1 (Pages 4, 39)

Desired Calib. Interval 3 Months []Includes extra 25% n/a Ref. 3.1 (Pages 4, 39)

Drift Source Er]Vendor ;Calculated n/a Ref. 1 (Sec. 4.3.1)

Ref. 3.1 (Page 21,

+/- 0.1% FS/ 1 Month Attachment 2 Page 7),

Drift Value = +/- 2.904738 psig Comment 9, Comment 11 Page 9 of 15

I 0000-0105-0835-R2 Pilg-SRVs-T506-ATWS-HiPres RPT-CaIc-2010 2.2 Analog Trip Module (Master Trip Unit) (cont'd)

Calibration: Value I equation Sigma If Reference(s) not 3

' 0.02 mA Ref. 3.1 (Pages 21* 39),

As Left Tolerance 0.13% SP Comment 3

+/- 0.02 mA Leave Alone Tolerance 0.13% SP Ref. 3.1 (Pages 4, 39)

Input Calibration Tool: Not required , Ref. 3.1, Comment 2 Ref. 3.1 (Page 18, 39),

Accuracy .0.13% Full Scale Comment 3 Resolution / Readability Not required Comment 2 Minor Division Not required n/a Comment 2 Upper Range 1500 psig Ref. 3.1 (Page 18)

Temperature Effect Not required Comment 2 Input Calibration Standard: Not required, "K Ref. 3.1, Comment 2 Included in Input Calibration Tool Accuracy Accuracy Ref. 3.1 (Page 4)

Resolution / Readability Not required Comment 2 Minor Division Not required .. n/a Comment 2 Upper Range Not required n/a Comment 2 Temperature Effect Not required Comment 2 Output Calibration Tool: Not required Ref. 3.1, Comment 2 Included in Input Calibration Tool Accuracy , Accuracy Ref. 3.1 (Page 4)

Resolution / Readability Not required Comment 2 Minor, Division Not required n/a Comment 2 Upper Range Not required n/a Comment 2 Temperature Effect Not required Comment 2 Output Calibration Standard: Not required -______ Ref. 3.1, Comment 2 Included in Input Calibration Tool Accuracy Accuracy Ref. 3.1 (Page 4)

Resolution / Readability Not required Comment 2 Minor Division Not required n/a Comment 2 Upper Range Not required n/a Comment 2 Temperature Effect Not required Comment 2 Page 10 of 15

1 0000-0105-0835-112 Pllg-SRVs-T506-ATWS-HIPres RPT-Caic-2010

3. Summary Results:

Calculated Values Meets Setpoint Function Allowable Nominal Trip Meets LER Spurious Trip Value a Avoidance Avoidance Anatytit Umit (from Section 1) Setpolntt Criterta Criteria 1212 psig ATWS High 1220 psig Upper Pressure RPT .. Upper Y Y Excludes head correction.

I Page 11 of 15

I 0000-0105-0835-R2 Pllg-SRVs-T506-ATWS-HiPres RPT-Calc-201 0

4. Comments and Recommendations:
1. Unless specifically identified as "bias" errors in this document, all instrument uncertainty errors will be considered to be random in nature, even when the "Y"symbol is not shown.
2. Some plant specific information has not been provided in the current setpoint calculation(s) or documents (e.g., Ref. 3.1) and is considered unnecessary because the impact of this information is included within the instrument accuracy values, or considered negligible, within the current setpoint calculation(s) or documents.
3. The current setpoint calculation of record (Ref. 3.1; Page 4) provides combined Measuring and Test Equipment (M&TE) errors for both the Pressure Transmitter (PT) and for the Master Trip Units. Specific information is not provided for Calibration Tools and Calibration Standards. In addition, the current setpoint calculation of record (Ref. 3.1; Page 21) provides Calibration Tolerances (i.e., As Left Tolerances). These four errors are all used in calculating the Allowable Value (AV) and Nominal Trip Setpoint (NTSP).
4. Temperature effect, radiation effect, seismic effect, humidity effect, power supply effect, Radio Frequency Interference/ Electromagnetic Interference (RFI/EMI) effect, and Insulation Resistance Effect (IRE) errors are marked "negligible", "not provided", or "included in accuracy" and are considered to have negligible or no impact on.the manufacturer's accuracy terms when they are not identified separately.
5. Per References 1 and 2, overpressure effects are only applicable to certain pressure measurement devices (e.g., differential pressure transmitters), and static pressure effects are only applicable to certain differential pressure measurement devices. These effects are marked "n/a"for other devices.
6. The current setpoint calculation of record (Ref. 3.1; Pages 19 and 31) provides a Temperature Effect for the Master Trip Units (i.e., +/- 4.66 psig). However, per the guidance in Attachment 3 (Page 2; Sec. 2.3) of Ref. 3.1, there is no additional Temperature Effect, beyond the instrument Vendor Accuracy of +/- 0.13% FS, ifthe instrument is operated up to a temperature of 113.5 0 F (with the corresponding external cabinet temperature being up to 76 OF) (Ref. 3.1; Page 31; Comment 9). Also, there is no additional Temperature Effect, beyond the higher instrument Vendor Accuracy of +/- 2% FS, ifthe instrument is operated with a temperature from 113.5 to 142.5 IF (with the corresponding external cabinet temperature being 76 to 105 OF) (Ref. 3.1; Page 31; Comment 9).

Per Ref. 3.2 (Sec. 4.1 Item 8G), the Trip temperature range is 60 - 105 OF. Per Ref. 3.2 (Sec.

4.1 Item 8H), the Normal and Calibration temperature ranges match the 76 - 105 OF.

Therefore for the Master Trip Unit Accuracy:

- to account for the Trip temperature range above 76 OF, the higher instrument Vendor Accuracy of +/- 2% FS must be used under Trip conditions (in the AV and NTSP1 calculations).

No additional Temperature Effect is necessary.

- no Temperature Effect is necessary and the higher instrument Vendor Accuracy of +/- 2%

FS must be used under Normal and Calibration conditions.

7. The accuracy for the Pressure Transmitter includes the combined effects of linearity, hysteresis, and repeatability. (Ref. 6.1)
8. The current calibrated span for the Pressure Transmitter is from 13 psig to 1513 psig, resulting in a Calibrated Span (SP) equal to 1500 psig. This calibrated span will encompass the post modification Analytical Limit (AL), Allowable Value (AV), and the Nominal Trip Setpoint (NTSP).
9. The current approach in GEH setpoint calculation methodology treats the Drift Effect, Radiation Effect and the Seismic Effect for this instrument to be a 2 sigma values, per Ref. 6.3.

Page 12 of 15

I 0000-0105-0835-R2 PIlg-SRVs-T506-ATWS-HiPres RPT-Caic-2010

4. Comments and Recommendations (cont'd):
10. For conservatism, 1500 psig, the Reactor Pressure Vessel Emergency Limit is used as the possible over-pressure value for the Pressure Transmitters.
11. The current setpoint calculation of record (Ref. 3.1; Page 32, Note 12) provides a Vendor Drift for the Pressure Transmitters (PTs) (i.e., +/- 7.5 psig), without extrapolation beyond 2 years.

However, because the Technical Specifications allow for the calibration interval to include

+/- 25%, Ref. 1 was used to calculate and extrapolate the PT Drift value to 30 months, for conservatism.

The current setpoint calculation of record (Ref. 3.1, Page 21 and Attachment 2 (Page 7))

provides a calculated Trip Unit (TU) Drift (i.e., +/- 6.0 psig), with a linear calculation from the Vendor Drift for 1 Month to 4 Months. However, the TU Drift was extrapolated using the method in Ref. 1 for 3 Months plus + 25% (i.e., 3.75 months).

12. The analog output inaccuracy for the Master Trip Unit does not apply because there is no Slave Trip Unit to the trip setpoint signal to the AnticipatedTransient Without Scram (ATWS) logic, but instead a digital (discrete) output from the Master Trip Unit. (Ref. 3.1; Page 12, Page 19, Attachment 1 Page 4, Attachment 3 Page 2)
13. The current setpoint calculation states that Process Measurement Accuracy (PMA) "can be neglected" (Ref. 3.1 Page 30 Note 7). However, for conservatism, the PMA is included in the NTSP calculations to reduce both of them.
14. Because the calibration tolerance terminology at PNPS may differ slightly from GEH Instrument Setpoint Methodology, the definitions for the terms used in this document are provided here.
a. As Left Tolerance (ALT): This is the tolerance within which the device calibration reading is left after calibration.
b. Leave Alone Tolerance (LAT): This is the tolerance within which calibration need not be performed, and is intended to allow for normal variations in instrument readings due to accuracy and drift.
c. As Found Tolerance (AFT): This is the tolerance around the final NTSP, and represents the tolerance with which the instrument loop setpoint can be found during verification of the setpoint, without being classified as out-of-tolerance from an instrument performance point of view. This tolerance ensures that channel operation is consistent with the assumptions or design inputs used in the setpoint calculations and that there is a high confidence in future acceptable channel performance.
15. Task T0902, Transient Analysis, used an Allowable Value of 1220 psig as the analysis setpoint.

Therefore, no Analytical Limit is applicable. (Ref. 5.1)

16. Transfer functions used in this calculation:

Pressure Transmitter Output (mA) linearly converted from input (psig).

Analog Trip Module Comparison of pressure signal (mA, equivalent to psig) with a reference.

Page 13 of 15

1O000-01 05-0835-R2 P11g-SRVs-T506-ATWS-HiWros RPT-Calc-201 0

5.

References:

1. NEDC-32889P, Rev. 3, "General Electric Methodology for Instrumentation Technical Specification and Setpoint Analysis", Class 3, November 2002.
2. NEDC-31336P-A, "General Electric Instrument Setpoint Methodology", Class 3, September 1996.
3. Current applicable Pilgrim Nuclear Station Unit 1 setpoint documents/inputs:

3.1 Boston Edison Calculation No. I-N1-110 (25-226-C025), "Setpoint Calculation for PIS263-123A, B, C, D: Reactor High Pressure ATWS, Rev. 0, June 10, 1993 (Ref. 3.2, Rev. 0).

3.2 Pilgrim Nuclear Power Station Nuclear Station Task Design Input Request (DIR) response, Rev. 0, August 3, 2009 Pilgrim Nuclear Power Station Nuclear Station DIR response, Rev. 1, December 14, 2009 Pilgrim Nuclear Power Station Nuclear Station DIR response, Rev. 2, December 22, 2009 I Pilgrim Nuclear Power Station Nuclear Station DIR response, Rev. 3, February 22, 2010.

4. Pilgrim Nuclear Power Station Technical Specifications 4.1. Pilgrim Nuclear Power Station, Technical Specifications (TS). Pilgrim Nuclear Power -

Not used.

5. GEH letters / reports:

5.1. Task T0902, Transient Analysis - ATWS, licensing input, "T902 Final", eDRF Section 0000-0110-9898, Rev 2 [internal document; not releasable] [Refer to GEH document, NEDC-33532P (DRF 0000-0108-5986) with the same information.]

6. Vendor Specifications 6.1. Rosemount 1151 Pressure Transmitter Specifications (2 sheets) (Ref. 3.2, Rev. 1).

6.2. Rosemount 1151 Pressure Transmitter Product Data Sheet, 008913-0100-4360, Rev HA, March 2008 (Ref. 3.2, Rev. 2).

6.3. Facsimile from Gerry Hanson (Rosemount Nuclear Instrumentation, Inc.) to Daniel Gould (GE), "3 Sigma Compliance", February 26, 1999.

Page 14 of 15

I 0000-0105-0835-R2 Pilg-SRVs-T506-ATWS-HiPres RPT-Calc-2010, Loop Diagram:

(Ref. 3.1 Page 12)

Page 15 of 15

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