serial no. 06-0841b docket no. 50-336 attachment 2 · 2012. 11. 29. · serial no. 06-0841b docket...

Serial No. 06-0841BDocket No. 50-336

ATTACHMENT 2

INSTRUMENTATION TECHNICAL SPECIFICATION CHANGES

CALCULATION ZPM DRIFT-0426012, REV 0. DATED 9/14107ZERO POWER MODE DRIFT ANALYSIS IN SUPPORT OF LBDCR 06-MP2-036

DOMINION NUCLEAR CONNECTICUT, INC.MILLSTONE POWERSTATION UNIT 2

Approved 11/17/03 Effective 11/21/03

CALCULATION TITLE PAGEA nn Total Numiber of Pages: 22TITLE

ZPM DRIFT-0426012 0 Zero Power Mode Drift Analysis in Support of LBDCR 06-MP2-036CALCULATION No. Revision No.

NA N/A

VENDOR CALCULATION No. Revision No.

N/AVENDOR NAME

NUCLEAR INDICATOR: 50.59 Evaluation or Screen Calc. Supports Calc. SupportsAttached DCR/MMOD/EE? Other Process?

OCAT1 []'RWQA [-SBOQA

-IFPQA EI-ATWSQA EINON-QA SE]YES ONO

INCORPORATES: LBDCR 06-MP2-036CCN NO: AGAINST REV. Ref. No. Reference

Executive Summary

LBDCR 06-MP2-036 is proposing extending the surveillance requirement for the auto removal of the Zero PowerMode Bypass function from a monthly interval to once within 92 days of a reactor startup. To support the proposedsurveillance extension for the auto removal of the Zero Power Mode Bypass function, a detailed drift analysis isrequired to be performed. Existing calculation PA79-219-00767GE used a drift value of .08 decades for an assumedcalibration interval of 24 months. The drift analysis will verify that extending the existing monthly functional checkto once within 92 days of a reactor startup will not result in actual equipment drift beyond the assumed valueswithin calculation PA79-219-00767GE. Also, this calculation determines the upper trip setpoint limit for the autoremoval of the Zero Power Mode Bypass function.

Approvals (Print & Sign Name)

Preparer: 4 M' Date: q10 7

Interdiscipline Reviewer: N/A Discipline: Date:

Interdiscipline Reviewer: N/A Discipline: Date:

Independent Reviewer: Date:

Engineering Approver.:~ Date-.

Installation Verification

El Calculation represents the installed configuration and approved licensing condition (Calculation of Record)El N/A does not affect plant configuration (e.g., study, hypothetical analysis, etc.)Preparer/Designer Engineer: (Print and Sign) Date:

DCM 05-1ARev. 011Page 1 of I

Approved 9/22/04 Effective 9/27/04

PassPort DATABASE INPUTs

Calculation Number: ZPM DRIFT-0426012

Vendor Calculation Number/Other: N/A

Page 2

Revision: 0

Revision: N/A

El Yes 0 No

N/A

CCN # N/A

Superseded By: N/A

Cale Voided:

Supersedes Calc:

Discipline (Up to 10) I,N

Unit Project Reference Component Id Computer Code Rev..No./(M I, M2, M3) (EWA,•Ror MMOD) ,. .Level No.

M2 N/A WR-LOG-A Microsoft Excel 9.0WR-LOG-B__WR-LOG-C.WR-LOG-D

MEL CODES*Structure System Component Reference Calculation Rev CCN

No.AB RPS LOP PA79-219-00767GE I N/A

*The codes required must be alpha codes designed for structure, system and component.NOTE: Avoid multiple item references on a line, e.g., LT 1210 A-D requires four separate lines. -

Reference Drawing Sheet Rev. No.N/A

Comments:

I

Referenced By Calculation Impact Impact AR Reference/Calc Change Ref.Y N

N/A

DCM 05-00BRev 009-01Page I of I

Calculation No. ZPMDRIFT-0426012, Rev. 0

TABLE OF CONTENTS

Section & Title Page

COVER PAGE I

PASSPORT DATABASE INPUTS 2

TABLE OF CONTENTS 3

1.0 PURPOSE 4

2.0 SUMMARY OF RESULTS 4

3.0 REFERENCES/DESIGN INPUTS 5

4.0 ASSUMPTIONS 6

5.0 METHOD OF CALCULATION 7

6.0 BODY OF CALCULATION 8

7.0 DESIGN VERIFICATION 14

8.0 ATTACHMENTS

Appendix A - Historical Surveillance Data - WR-LOG-A,B,C & D Al-A5

DCM Form 5-IC A6 & 7

DCM Form 5-1D A8

TOTAL 22 pgs

Page 3 of 14


1.0 PURPOSE

The purpose of this calculation is to estimate 92 day drift values for the auto removalof the Zero Power Mode Bypass function. LBDCR 06-MP2-036 is proposingextending the surveillance requirement for the auto removal of the Zero Power ModeBypass function from a monthly interval to once within 92 days of a plant startup. Tosupport the proposed surveillance extension for the auto removal of the Zero PowerMode Bypass function, a detailed drift analysis is required to be performed. Existingcalculation PA79-219-00767GE used a drift value of .08 decades for an assumedcalibration interval of 24 months. The drift analysis will verify that extending theexisting monthly functional check to once within 92 days of a plant startup will notresult in actual equipment drift beyond the assumed values within calculation PA79-219-00767GE. This calculation shall also determine the upper trip setpoint limit forthe auto removal of the Zero Power Mode Bypass function.

2.0 SUMMARY OF RESULTS

The bounding values of drift for a 92 day surveillance requirement, derived fromhistorical calibration data for Wide Range Nuclear Instrumentation WR-LOG-A, WR-LOG-B, WR-LOG-C and WR-LOG-D is

Bound = ± 0.0269 decades

This value is less than the ± 0.08 decades drift term used in calculation PA79-219-00767GE Revision 1. This value is conservative given none of the four instrumentsrequired any readjustment during the period of time between January 2005 and July of2007.

The upper trip setpoint limit is 7.413X10 5 % power. The setpoint must be left belowthis value based on the Technical Specification Allowable Value of 1.OX1 04 %power.

Page 4 of 14


3.0 DESIGN INPUTS & REFERENCES

3.1 Desipn Inputs

3.1.1 SP-M2-EE-0003, Rev 0, Guidelines for Impact Evaluation of 24-Month Fuel Cycle onTechnical Specification Surveillances for Millstone Unit 2

3.1.2 Surveillance Procedure SP2403GA "RPS Channel "A" Bistable Trip Test" Rev 2 Chg 5

3.1.3 Surveillance Procedure SP2403GB "RPS Channel "B" Bistable Trip Test" Rev 2 Chg 5

3.1.4 Surveillance Procedure SP2403GC "RPS Channel "C " Bistable Trip Test" Rev 2 Chg 6

3.1.5 Surveillance Procedure SP2403GD "RPS Channel "D" Bistable Trip Test" Rev 2 Chg 6

3.1.6 Surveillance Procedure SP2401BB1 "Channel "A" Wide Range Monitor Start-upFunctional Test" Rev I Chg 3.

3.1.7 Surveillance Procedure SP240 I BB2 "Channel "B" Wide Range Monitor Start-upFunctional Test" Rev 1 Chg 4.

3.1.8 Surveillance Procedure SP2401BB3 "Channel "C" Wide Range Monitor Start-upFunctional Test" Rev 1 Chg 4.

3.1.9 Surveillance Procedure SP2401 BB4 "Channel "D" Wide Range Monitor Start-upFunctional Test" Rev I Chg 5.

3.1.10 Surveillance Procedure SP2401 BC 1 "Channel "A " Wide Range Monitor Calibration "Rev I Chg 3.

3.1.11 Surveillance Procedure SP2401 BC2 "Channel "B " Wide Range Monitor Calibration"Rev I Chg 4.

3.1.12 Surveillance Procedure SP2401BC3 "Channel "C" Wide Range Monitor Calibration"Rev 1 Chg 3.

3.1.13 Surveillance Procedure SP2401BC4 "Channel "D" Wide Range Monitor Calibration"Rev I Chg 6.

3.1.14 Calculation PA97-219-00676GE Rev 1, Millstone Unit 2 Wide Range Neutron FluxChannel Loop Uncertainty.

3.1.15 DOE Research and Development Report No. WAPD-TM-1292, February 1981,Statistics for Nuclear Engineers and Scientists Part 1: Basic Statistical Inference.

3.1.16 American National Standard N 15.15-1974, Assessment of the Assumption of Normality(Employing Individual Observed Values)

Page 5 of 14


4.0 ASSUMPTIONS

4.1.1 The data derived from the surveillance procedures constitute a random sample of thepopulation of possible values of drift from like instruments.

4.1.2 The electronics installed in the Wide Range Monitors are typical of all electronics of thesame manufacturer and model numbers. Therefore, data may be pooled without furtheranalysis.

4.1.3 It is important to note that none of the instruments required recalibration. In terms ofreal drift, none of the affected instrument channels drifted beyond 0.0269 decades fromthe period of January 2005 to July of 2007. However, for purposes of addedconservatism, each successive calibration interval was assumed as a unique data pointwith no credit for non-adjustment of the instrument setpoint.

Page 6 of 14


5.0 METHOD OF CALCULATION

In order to calculate bounding drift values for a 92 day surveillance interval, the methodsof Reference 3.1.1 were employed. Plant historical data were tabulated and analyzed.Historical surveillance test and calibration data was collected for the applicableinstrumentation and entered into an ExcelTM spreadsheet. Statistical analysis of the datawas performed using various functions within ExcelTM.

A linear regression analysis of the data was performed to determine if drift is timedependent. The data were tested for normality, and estimates of the bounding values ofdrift were determined using the methods for normal distributions. Scatter plots andhistograms were prepared to assist in visualization of the data.

5.1 Instrument Block Diagran

Figure 1 is a diagram of a typical Wide Range Nuclear Instrumentation channel. Thescope of drift analysis in this calculation pertains to the Zero Power Mode Bypassbistable. The current setpoint for the Zero Power Mode Bypass removal function is9.4 X 10-5 % reactor power.

Indicator

ZPM Bistableoutput to RPS

FissionChamber Preamplifier Signal Processor

Figure 1: Wide Range Instrumentation Channel Block Diagram

5.2 Zero Power Mode Bistable Calibration/Functional Check

The identified surveillance procedures (References 3.1.2 through 3.1.13) verify thebistable trip setting of the Zero Power Mode Bypass. The setpoint is verified to fallwithin an acceptance range of 7.1 X 10-5 to 1.2 X 10-4 % reactor power.

From the completed surveillance tests, drift values can be typically obtained bysubtracting "as-found" surveillance values from the "as-left" values from the precedingsurveillance test. The drift values obtained are for the period of time between the twosurveillance dates. The twelve surveillance procedures effectively verify the Zero Power

Page 7 of 14


Mode Bypass bistable setting using the same methodology. As a result, the calibrationinterval for each channel will be based on the period of time between each successiveinstrument check, whether it was verified through the calibration surveillance, functionaltest surveillance or the bistable trip test surveillance procedure.

5.3 Input Data

The historical calibration data in the Appendix constitute the input data for thiscalculation. The data was derived from surveillance records which were completed overthe period from January of 2005 to July of 2007. The associated workorders have beenidentified for each completed surveillance.

5.4 Spreadsheet Calculations

Microsoft ExcelTM, version 9.0, for Windows 2000 was used to perform the statisticalcalculations and prepare the scatter plots and histograms for this calculation. Thefunction, AVERAGE, was used to calculate the sample mean, the function, STDEV, wasused to calculated the sample standard deviation and the functions, SLOPE andINTERCEPT, were used to calculate the slope and intercept of the best-fit straight linefor the regression analyses.

The computations performed to the full precision of ExcelTM are presented in thiscalculation rounded to two decimal places in most cases. Verification by hand calculatorusing the rounded values may result in slightly different results due to round-off errors.

'6.0 BODY OF CALCULATION

6.1 Drift Analysis

The identified surveillance procedures simulate an input signal through operation of apotentiometer on the Wide Range Nuclear Instrumentation drawers. The "as-found" and "as-left" were observed on the displays and recorded. The loop drift was then determined bysubtracting the "as-left" values from the "as-found" values.

Page 8 of 14


6.2 Historical Data Compilation

No Days Drift (Dec)1 1 -0.02692 3 -0.02693 4 -0.02694 7 -0.02695 9 -0.02696 13 -0.02697 15 -0.02698 15 -0.02699 15 -0.0269

10 19 -0.026911 25 -0.026912 28 -0.026913 28 -0.026914 34 -0.026915 0 0.000016 1 0.000017 1 0.000018 1 0.000019 1 0.000020 1 0.000021 2 0.000022 2 0.000023 3 0.000024 4 0.000025 7 0.000026 7 0.000027 7 0.000028 7 0.000029 9 0.000030 11 0.000031 11 0.000032 11 0.000033 13 0.000034 15 0.000035 15 0.000036 15 0.000037 15 0.000038 15 0.0000

No3940414243444546474849505152535455565758596061626364656667686970717273747576

Days Drift (Dec)15 0.000015 0.000015 0.000016 0.000017 0.000017 '0.0000.17 0.000017 0.000019 0.000019 0.000019 0.000019 0.000019 0.000019 0.000019 0.000019 0.000019 0.000020 0.000021 0.000021 0.000021 0.000021 0.000022 0.000022 0.000023 0.000023 0.000023 0.000023 0.000025 0.000027 0.000027 0.000027 0.000027 0.000027 0.000027 0.000027 0.000028 0.000028 0.0000

No Days Drift (Dec)77 28 0.000078 28 0.000079 28 0.000080 28 0.000081 28 0.000082 28 0.000083 28 0.000084 28 0.000085 28 0.000086 28 0.000087 28 0.000088 28 0.000089 28 0.000090 28 0.000091 28 0.000092 28 0.000093 29 0.000094 29 0.000095 29 0.000096 31 0.000097 31 0.000098 31 0.000099 31 0.0000100 31 0.0000101 31 0.0000102 31 0.0000103 31 0.0000104 31 0.0000105 31 0.0000106 . 31 0.0000107 33 0.0000108 33 0.0000109 33 0.0000110 33 0.0000111 33 0.0000112 34 0.0000113 34 0.0000114 34 0.0000

No Days Drift (Dec)115 36 0.0000116 37 0.0000117 37 0,0000118 38 0.0000119 38 0.0000120 38 0.0000.121 38 0.0000122 38 0.0000123 38 0.0000124 38 0.0000125 42 0.0000126 42 0.0000127 42 0.0000128 42 0.0000129 51 0.0000130 51 0.0000131 51 0.0000132 55 0.0000133 64 0.0000134 64 0.0000135 64 0.0000136 64 0.0000137 1 0.0269138 4 0.0269139 7 0.0269140 15 0.0269141 18 0.0269142 20 0.0269143 21 0.0269144 28 0.0269145 28 0.0269146 33 0.0269147 33 0.0269148 37 0.0269149 37 0.0269150 41 0.0269

Table 1: WR-Log A/D Drift Data

Table I presents the results of the drift determination, described above. The drift data are inorder of increasing values of drift.

6.3 Tests for Outliers

There were no suspected outliers in the results. Therefore, this test was not performed andno data points were removed from the sample population.

Page 9 of 14


6.4 Data Plots

The scatter plots and histograms, Figures 2 and 3, provide a graphical presentation of the driftdata. These graphs were created using ExcelTM.

WR-LOG-AJD Drift Data

0.0300

0.0200

0.0100.

0.0000 . . .410 20 30 40 50 60

-0.0100

-0.0200 -- ...

-0.0300

Surveillance Interval (days)

Figure 2: Scatter Plot - WR-LOG-A/D Drift Data

A visual inspection of the scatter plot indicates no apparent connection between themagnitude and the duration of the surveillance interval. A linear regression analysis of thedata will confirm or deny the visual observation that the magnitude of drift is notdependent on the duration between surveillances.

WR-LOG-.NBICID

16

14

12

C)

U. 6

4

2

-0.0269

Drift (decades)0.0269

Figure 3: Histogram - WR-LOG-A/D Drift Data

Page 10 of 14


The histogram does not appear to be from a normal distribution. A D' Test shall confirm ordeny the normality of the drift data.

6.5 Tests for Normality

Due to the sample population being greater than 50 data points, the D' Test wasperformed. (Reference 3.1.16).

D' Test

First, T was computed using the following formula:

T '•l[inly

where:

n is the number of values in the sample

xi represents the values in the sample arranged in increasing order

Then the D' test statistic was calculated:

Dl= TS

where:

S2 = (n-i )S2 and S2 is the unbiased estimate of the population variance

The mean and standard deviation calculate as follows:

Mean X= Ex, Standard deviation= s = (x, -X)

n (n -i)ý

where:

xj represents the values in the sample arranged in increasing order

n is the number of values in the sample

Using Excel, the standard deviation, s, calculates to 0.01166 and the mean is 0.0.

Therefore, the variance s2 calculates to 1.3596E-4.

Page 11 of 14


Using the above formula, with n is equal to 150 data samples,

S2 = (150-1)1.3596E-4 = 0.0203

The test statistic, D' was then compared to the critical values from Table 5 of Reference3.1.16 at a significance level, a = 0.02 (P = 0.01 and 0.99).

The results, calculated by ExcelTM , are:

T--51.21851.218

Therefore, D'= - 359.82400623

From Reference 3.1.16, the critical values are 505.6 at P = 0.01 and 526.4 at P = 0.99. The teststatistic, D', does not lie between the critical values, so the hypothesis of a normal distributionis rejected at a = 0.02.

6.6 Bounding Values of Drift

For a non-normal distribution, the proportion of the population exceeding assumedbounds can be determined from Reference 3.1.1.

(x + O)Fa 2:2(x+,).2(n-x)Pu (n - x) + (x + 1)F,,12:2(x+1.2 _x x

Assumed upper and lower bounds (pass/fail criterion) are selected as ± 0.0269 decades.Then, X = 0, and the above equation becomes:

Pu Foo025.2150 3.781 0.025150 + F025:2.300 150+3.781

Thus, 97.5% of the population will lie within a bound of+ 0.269 decades.

It is important to note here that none of the instruments required recalibration. Therefore,in terms of real drift, none of the affected instrument channels drifted beyond 0.0269decades from the period of January 2005 to July of 2007. However, for purposes ofadded conservatism, each successive calibration interval was assumed as a unique datapoint with no credit for non-adjustment of the instrument setpoint.

6.7 Linear Regression Analysis of Drift

As stated earlier, examination of the scatter plot shows no apparent time dependency inthe drift. Linear regression analyses of the absolute values of the data, performed byExcelTM using the SLOPE and INTERCEPT functions, provide the slope and intercept ofthe best-fit straight line.

Page 12 of 14


Slope = -1.486XI 04

Intercept = 0.0086

The negative slope of the regression line for the drift data confirm that the drift does notincrease with time. This is further supported by the fact that the instrument channels inquestion did not require any readjustment for the identified surveillances from January2005 to July 2007. Further, the Zero Power Mode Bypass auto removal setpoint forinstrument channels WR-LOG-C and WR-LOG-D did not move at all from the period ofin question.

Therefore, based on the above results, the bounding values of drift for a 92 daysurveillance interval for the Zero Power Mode bypass auto removal function is ± 0.0269decades,

Bound + 0.0269 decades

This value is less than the + 0.08 decades drift term assumed in calculation PA79-219-00767GE Revision I (Reference 3.1.14).

6.8 Setpoint Derivation

The 1I X 10-4 % reactor power Tech Spec value is considered an allowable value and not ananalytical limit. The Zero Power Mode bypass setpoint is not modeled in the plant safetyanalysis and is not considered an analytical limit. For purposes of this calculation, theupper tni. setpoint limit shall be calculated by subtracting from the allowable value of1.OXIO % reactor power the root of the sum of the squares of the expected errors whichwould be seen during the calibration process. The expected uncertainty terms includeRack Drift (RD), Rack Calibration Accuracy (RCAzp) associated with the Zero PowerMode Function and Measurement and Test Equipment (MTE). These terms have beenderived from calculation PA79-219-00767GE Revision I (Reference 3.1.14). They are asfollow:

RCAzp = + 0.10 decades

RD = + 0.08 decades It is important to note this drift value is much more conservativethat the expected drift term calculated within this calculation. (+ 0.0269 decades).

MTE = + 0.01 decades

Total Expected Uncertainty during performance of the Zero Power Mode Bypass function

surveillance would be calculated as follows:

SVMr ±= (RCA p))2 (-)2+ + (MTE)2

Page 13 of 14


SV entr = ± (.10)2 +(.08)2 +(.01)2 =d- 0.13 decades

The Allowable Value for the Zero Power Mode Bypass function is again 1.OXI 0-4

reactor power. In terms of decades, 1.0Xl0-4 equates to the following:

Log(1.0XI0-4) = .4

These instruments have 10 decades ranging from 10-8 to 102. In terms of logarithmicfunction:

Log(10"1) = -8

Log(j10 2) = 2

In terms of log, this span ranges from -8 to 2. To determine the upper trip setpoint limit,

0.13 decade must be subtracted from logarithmic value of 1 .0X10 which is -4.

Upper trip setpoint limit equals -4 - 0.13 = -4.13 decades.

In terms of% reactor power, -4.13 decades equals 10-413 or 7.413X10 5 % power.

Figure 4 below provides a simplified diagram of the upper trip setpoint derivation.

Allowable Value L.0X10 4 (-4 log){ SVi., = -0.13 decades or log7.413X10s (-4.13 log)

As-foundAs-left trip Actual field setpointsetpoint band if.

Figure 4: Upper Trip Setpoint Derivation

7.0 DESIGN VERIFICATION

Design verification was done by means of a full design review in accordance with DesignControl Manual, Chapters 4 and 5. A copy of the Calculation Review Comment andResolution Form is included as an attachment.

Page 14 of 14


Appendix

Historical Surveillance Data

WR-LOG-A, WR-LOG-B, WR-LOG-C & WR-LOG-D

Page A l

Calculation No. ZPMDRIFT-0426012, Rev. 0I WR-LOG-A Surveillance Data

SurveillanceProcedureSP2401GASP2401BC1SP2401GASP2401GASP2401GASP2401 GASP2401 GASP2401GASP2401GASP2401GASP2401881SP2401GASP2401 GASP2401 GASP2401GASP2401 GASP2401GASP2401GA

SP24018B1SP2401GASP2401GASP2401BB1SP2401BC1SP2401 GASP2401GASP2401GASP2401GASP2401GASP2401GASP2401GASP2401GASP2401GASP2401 GASP2401GASP2401BB1SP2401GASP2401GASP2401GASP2401GA

Work OrderM20702383M20600025M20701671M20700842M20700061M20609438M20607927M20607014M20606247M20605502M20504175M20604755M20603026M20602006M20601062M20600096M20512070M20511380M20602053M20510621M20509769M20402580M20406730M20509024M20508223M20507476M20506707M20505140M20503476M20502597M20501552M20500102M20412412M20411407M20314121M20410435M20409365M20408330M20407340

CompletionDate

07/19/200707/16/200706/28/200706/07/200705/04/200703/27/200702/27/200702/02/200701/16/200712/05/200611116/200611/15/200609/12/200608/15/200607/18/200606/20/200606/05/200605/08/200604/05/200603129/200603/06/200602123/200602/14/200602/07/200601/05/200612/091200511/081200510/20/200509/13/200508/29/200508/01/200506/241200505/241200505/23/200505/19/200503/29/200503/141200502/14/200501104/2005

AS FOUND AS LEFT DRIFT AS FOUND AS LEFT DRIFT% Power % Power (Log) Decades1.00E-04 1.00E-04 -4.00009.40E-05 9.40E-05 -6.OOE-06 -4.02691.00E-04 1.OOE-04 6,00E-06 -4.00001.OOE-04 1.OOE-04 0.00E+00 -4.00001.00E-04 1.00E-04 0.OOE+00 -4.00001.00E-04 1.OOE-04 0.00E+00 -4.00001,00E-04 1.OOE-04 0.OOE+00 -4.00001.OOE-04 1 0E-04 0.OOE+00 -4.00001.00E-04 1.00E-04 0.OOE+00 -4.00001.00E-04 1.00E-04 0.OOE+00 -4.00001.00E-04 1.00E-04 0.00E+00 -4.0000i.00E-04 1.00E-04 0.00E+00 -4.00001.00E-04 1.00E-04 0.OOE+00 -4.00001.OOE-04 1.OOE-04 0.00E+00 -4.00001.OOE-04 1.00E-04 0.00E+00 -4.00009.40E-05 9.40E-05 -6.00E-06 -4.02691.00E-04 1.00E-04 6.00E-06 -4.00009.40E-05 9.40E-05 -6.00E-06 -4.02691.00E-04 1,00E-04 6.00E-06 -4.00001.00E-04 1.00E-04 0.OOE+00 -4.00001.OOE-04 1.00E-04 0.00E+00 -4.00001.00E-04 1.00E-04 0.00E+00 -4.00009.40E-05 9.40E-05 -6.00E-06 -4.02691.00E-04 1.00E-04 6.00E-06 -4.00001.00E-04 1.00E-04 0.00E+00 -4.00001.OOE-04 1.00E-04 0.OOE+00 -4.00001.00E-04 1.00E-04 0.00E+00 -4.00009.40E-05 9.40E-05 -6.00E-06 -4.02691.00E-04 1.00E-04 6.00E-06 -4.00009.40E-05 9.40E-05 -6.00E-06 4.02691.OOE-04 1.00E-04 6,00E-06 -4.00001.00E-04 1.00E-04 0.OOE+00 -4.00001.OOE-04 1.OOE-04 0.OOE+00 -4.00009.40E-05 9.40E-05 -6.00E-06 -4.02691.00E-04 1.00E-04 6.OOE-06 -4.00001.00E-04 1.00E-04 0.OOE+00 -4.00009.40E-05 9.40E-05 -6.00E-06 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02691.OOE-04 1.00E-04 6.00E-06 -4.0000

Decades Decades-4.0000-4.0269 -0.0269-4.0000 0.0269-4.0000 0.0000-4.0000 0.0000-4,0000 0.0000-4.0000 0.0000-4.0000 0.0000-4.0000 0.0000-4.0000 0.0000-4.0000 0.0000-4.0000 0.0000-4.0000 0.0000-4.0000 0.0000-4.0000 0.0000-4.0269 -0.0269-4.0000 0.0269-4.0269 -0.0269-4.0000 0.0269-4.0000 0.0000-4.0000 0.0000-4.0000 0.0000-4.0269 -0.0269-4.0000 0.0269-4.0000 0.0000-4.0000 0.0000-4,0000 0.0000-4.0269 -0.0269-4.0000 0.0269-4.0269 -0.0269-4.0000 0.0269-4.0000 0.0000-4.0000 0.0000-4.0269 -0.0269-4.0000 0.0269-4.0000 0.0000-4.0269 -0.0269-4.0269 0.0000-4.0000 0.0269

AbsoulteDAYS Drift

31821343828251742191

642828281528337

2311973327311937152838311451152841

0.02690.02690.00000.00000.00000.00000.00000.00000.00000.0000.0.00000.00000.00000.00000.02690.02690.02690.02690.00000.00000.00000.02690,02690.00000.00000.00000.02690.02690.02690.02690.00000.00000.02690.02690.00000.02690.00000.0269

Page A2

Calculation No. ZPMDRIFT-0426012, Rev. 0WR-LOG-B Surveillance Data

SurveillanceProcedureSP240IGBSP2401BC2SP2401GBSP2401GBSP2401GBSP2401GBSP2401GBSP240IGBSP240IGBSP2401GBSP2401BB2SP2401GBSP240IGBSP2401 GBSP2401GBSP2401GBSP2401GBSP2401GBSP2401 BB2SP240IGBSP2401 GBSP2401BB2SP240IGBSP2401BC2SP2401GBSP240IGBSP2401GBSP2401GBSP2401 GBSP2401GBSP2401GBSP2401GBSP2401GBSP2401GBSP2401BB2SP2401GBSP2401GBSP2401GBSP2401GB

Work OrderM20702384M20512632M20701672M20700843M20700062M20609439M20607928M20607015M20606248M20605503M20504176M20604756M20603027M20602007M20601063M20600097M20512071M20511381M20602052M20510622M20509770M20402581M20509025M20406595M20508224M20507477M20506708M20505141M20503477M20502598M20501553M20500103M20412413M20411408M20314122M20410436M20409366M20408331M20407341

CompletionDate

07/19/200706/28/200706/28/200706/07(200705/04/200703/271200702/27/200702/02/200701/16/200712/05/200611/16/200611/15/200609/121200608/15/200607(18/200606/20/200606/05/2006051081200604/05/200603/29/200603106/200602/23/200602/07/200601/18/200601/05/200612/09/200511/08/200510/20/200509/13/200508/29/200508/01/200506/29/200505/24/200505/23/200505/19/200503/29/200503/14/200502/14/200501/14/2005

AS FOUND AS LEFT DRIFT AS FOUND AS LEFT DRIFT% Power % Power (Log) Decades9.40E-05 9.40E-05 -4.02699.40E-05 9.40&-05 0.OOE+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02691.00E-04 1.00E-04 6,002-06 -4.00009.40E-05 9.40E-05 -6.00E-06 -4.02699.40E-05 9.40E-05 0.OOE+00 4.02691.00E-04 1.OOE-04 6,00E-06 -4.00009.40E-05 9.40E-05 -6.00E-06 -4.02699.40E-05 9.40E-05 0.OOE+00 -4.02699.40E-05 9.40E-05 0.OOE+00 -4.02699.40E-05 9.40E-05 O.OOE+00 -4.02699.40E-05 9.40E-05 O.OOE+00 -4.02699.40E-05 9.40E-05 O.OOE+00 -4.02699.40E-05 9.40E-05 O.OOE+00 -4.02699.40E-05 9.40E-05 O,OOE+00 -4.02699.40E-05 9.40E-05 O.00E+00 -4.02699.40E-05 9.40E-05 O.OOE+00 -4.02699.40E-05 9.40E-05 O.OOE+00 -4.02691.00E-04 1.00E-04 6.00E-06 -4.00009,40E-05 9.40E-05 -6.00E-06 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02691.00E-04 1.OOE-04 6.00E-06 -4.00009.40E-05 9.40E-05 -6.OOE-06 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.OOE+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02691.00E-04 1.00E-04 6.00E-06 -4.00009.40E-05 9.40E-05 -6.00E-06 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.OOE+00 -4,02699.40E-05 9.40E-05 O.OOE+00 -4.02691.00E-04 1.00E-04 6.00E-06 -4.00009.40E-05 9.40E-05 -6.OOE-06 4.02699.40E-05 9.40E-05 O.OOE+00 -4.02699.40E-05 9.40E-05 O.OOE+00 4.02699.40E-05 9.40E-05 O.OOE+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.0269

Decades DecadesAbsoulte

DAYS Drift-4.0269-4.0269-4.0269-4.0000-4.0269-4.0269-4.00004.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0000-4.0269-4.0269-4.0269-4.0269-4.0000-4.0269-4.0269-4.0269-4.0269-4.0000-4.0269-4.0269-4.0269-4.0269-4.0000-4.0269-4.0269-4.0269-4.0269-4.0269

0.00000.00000.0269-0.02690.00000.0269-0.02690.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.0269-0.02690.00000.00000.00000.0269-0.02690.00000.00000.00000.0269-0.02690.00000.00000.00000.0269-0.02690.00000.00000.00000.0000

Page A3

21021343828251742191

642828281528337231116201327311937152833361451152831

0.00000.00000.02690.02690.00000.02690.02690.00000.00000.00000.00000.00000.00000.00000.00000.00000,00000.02690.02690.00000.00000.00000.02690.02690.00000.00000.00000.02690.02690.00000.00000.00000.02690.02690.00000.00000.00000,0000


I WR-LOG-C Surveillance Data I

SurveillanceProcedureSP2401 GCSP2401BC3SP2401GCSP2401 GCSP2401GCSP2401GCSP2401GCSP2401 GCSP2401GCSP2401GCSP2401 BB13SP2401 GCSP2401GCSP2401GCSP2401GCSP2401GCSP2401GCSP2401GCSP24011BB3SP2401GCSP2401GCSP24011BB3SP2401BC3SP2401 GCSP2401GCSP2401GCSP2401GCSP2401GCSP2401GCSP2401GCSP2401 GCSP2401GCSP2401GCSP2401GCSP2401BB3SP2401GCSP2401GCSP2401GCSP2401GC

Work OrderM20702385M20600413M20701673M20700844M20700063M20609440M20607929M20607016M20606249M20605504M20504177M20604757M20603028M20602008M20601064M20600098M20512072M20511382M20602051M20510623M20509771M20402582M20407114M20509026M20508225M20507478M20506709M20505142M20503478M20502599M20501554M20500104M20412414M2041 1409M20314123M20410437M20409367M20408332M20407342

CompletionDate

07/19/200707117/200706/28/200706/07/2007

05/041200703127/200703/05/200702/02/200701/16/200712/05/200611/16/200611/15/200609/12/200608114/200607/18/200606/20/2006061051200605/08/200604/05/200603/29/200603/06/200602/23/200602/14/200602/071200601/05/200612/09/200511/08/200510/20/200509/13/200508/29/200508/01/200506/24/200505/24/200505/23/200505/19/200503/29/200503/14/200502/14/200501/14/2005

AS FOUND AS LEFT DRIFT AS FOUND AS LEFT DRIFT% Power % Power (Log) Decades Decades Decades9.40E'05 9.40E-05 -4.0269 -4.02699.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9,40E-05 0.OOE+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.OOE+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.OOE+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.OOE+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.OOE+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.OOE+00 -4.0269 -4.0269 0.00009.402-05 9.40E-05 0.00E+00 4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.002+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.OOE+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.002+00 4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269. -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0-00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4,0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.4o0:0E5 9.40E-05 0.OOE+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.OOE+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.00009.40E-05 9.40E-05 0.00E+00 -4.0269 -4.0269 0.0000

Page A4

AbsoulteDAYS Drift

2 0.000019 0.000021 0.000034 0.000038 0.000022 0.000031 0.000017 0.000042 0.000019 0.00001 0.0000

64 0.000029 0.000027 0.000028 0.000015 0.000028 0.000033 0.00007 0.000023 0.000011 0.00009 0.00007 0.000033 0.000027 0.000031 0.000019 0.000037 0.000015 0.000028 0.000038 0.000031 0.00001 0.00004 0.000051 0.000015 0.000028 0.000031 0.0000

, V,


SWR-LOG-D Surveillance Data ISurveillanceProcedureSP2401 GDSP2401 GDSP2401BC4SP2401 GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GD

SP24011B34SP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401BB4SP2401GDSP2401GDSP2401GDSP2401BC4SP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GDSP2401GD

Work OrderM20702386M20701674M20512601M20700845M20700064M20611796M20610679M20609441M20607930M20607017M20504178M20606250M20604758M20603946M20603029M20602009M20601065M20600099M20602049M20512073M20511383M20510624M20406567M20509772M20509027M20508226M20505143M20503479M20502600M20501555M20500105M20412415M20411410M20410438M20409368M20408333M20407343

CompletionDate

07119/200706/28/200706/26/200706/07/200705/04/200703/27/200703/05/200702/02/200701/16/200712105/200611/16/200611115/200609/12/200608114/200607/18/200606/20/200606/051200605/08/200604/05/200603/29/200603/06/200602/07/200601/18/200601/051200612109/200511/08/200510/20/200509/13/200508/29/200508/01/200506/24/200505/26/200505/23/200503/29/200503/14/200502/14/200501/14/2005

AS FOUND AS LEFT DRIFT AS FOUND AS LEFT DRIFT% Power % Power (Log) Decades9.40E-05 9.40E-05 4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.OOE+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05. 0.OOE+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.OOE+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.OOE+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.OOE+00 -4.02699.40E-05 9.40E-05 0,00E+00 -4.02699.40E-05 9.40E-05 0.002E00 -4.02699.402-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 4.02699.40E-05 9.40E-05 0.00E+00 4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.OOE+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699A40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 -4.02699.40E-05 9.40E-05 0.00E+00 4.02699.40E-05 9.40E-05 O.00E+00 -4.0269

AbsoulteDAYS DriftDecades Decades

4.02694.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.02694.0269-4.0269-4.0269-4.02694.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.02694.0269-4.0269-4.02694.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269-4.0269

0.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.0000

Page A5

21219343822311742191

642927281528337

232720132731193715283829355Is2831

0.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000,00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.00000.0000

Serial No. 06-0841BDocket No. 50-336

ATTACHMENT 3

INSTRUMENTATION TECHNICAL SPECIFICATION CHANGES

MARKED UP TECHNICAL SPECIFICATION PAGES

DOMINION NUCLEAR CONNECTICUT, INC.MILLSTONE POWER STATION UNIT 2

March 16, 2006TABLE 3.3-1 (Continued)

TABLE NOTATION

* With the protective system trip breakers in the closed position and the CEA drive systemcapable of CEA withdrawal.

(a) nirip may be bypassed below 5% of RATED THERMAL POWER; bypass shall be

f) automatically removed when THERMAL POWER is Ž5% of RATE) THERMAL POWER.

C(b) Trip may be manually bypassed when steam generator pressure is < 800 psia and all CEAs arefully inserted; bypass shall be automatically removed when steam generator pressure is a 800psia.

(c) Trip may be bypassed below 15% of RATED THERMAL POWER; bypass shall beautomatically removed when THERMAL POWER is > 15% of RATED THERMALPOWER-

(d) Trip does not need to be OPERABLE if all the control rod drive mechanisms are de-energizedor if the RCS boron concentration is greater than or equal to the refueling concentration of (9Specification 3.9.1.

(e) DELETED

(f) AT Power input to trip may be bypassed below 5% of RATED TIERMAL POWER; bypassshall be automatically removed when THERMAL POWER is > 5% of RATED THERMAL

1~e APOWER.

ACTION STATEMENTS

ACTION I - With the number of channels OPERABLE one less than required by the MinimumChannels OPERABLE requirement, restore the inoperable channel to OPERABLEstatus within 48 hours or be in HOT STANDBY within the next 4 hours and/oropen the protective system trip breakers.

ACTION 2 - With the number of OPERABLE channels one less than the Total Number ofChannels, operation may continue provided the following conditions are satisfied:

a. The inoperable channel is placed in either the bypassed or trippedcondition within I hour. The inoperable channel shall either be restored toOPERABLE status, or placed in the tripped condition, within 48 hours.

b. Within I hour, all functional units receiving an input from the inoperablechannel are also declared inoperable, and the appropriate actions are takenfor the affected functional units.

C. The Minimum Channels OPERABLE requirement is met; however, oneadditional channel may be removed from service for up to 48 hours,provided one of the inoperable channels is placed in the tripped condition.

MILLSTONE - UNIT 2 3/4 3-4 Amendment No. 9, -3, 22, 44-6,4-39, M, -26, 2&.

Reissued by NRC Letter dated September 27, 2&6

h

S

Serial No. 06-0841ADocket No. 50-336

Insert C

Trip may be bypassed when logarithmic power is < 1 E-04% and the bypass shallbe capable of automatic removal whenever logarithmic power is < 1 E-04%.Bypass shall be removed prior to raising logarithmic power to a value Ž_ 1 E-04%.

Insert G

AT Power input to trip may be bypassed when logarithmic power is < 1 E-04% and thebypass shall be capable of automatic removal whenever logarithmic power is < IE-04%.Bypass shall be removed prior to raising logarithmic power to a value Ž> 1 E-04%.

(!E62OOTABLE 3.3-1 (Continued)

ACTION STATEMENTS

ACTION 3 - NOT USED

ACTION 4 -

ACTION 5 -

ACTION 6 -

With the number of channels OPERABLE one less than required by the MinimumChannels OPERABLE requirement, immediately verify compliance with theSHUTDOWN MARGIN requirements of Specification 3. 1. 1. 1, and at least onceper 4 hours thereafter.

With the number of channels OPERABLE one less than required by the MinimumChannels OPERABLE requirement, restore the inoperable channel to OPERABLEstatus within 48 hours or be in at least HOT STANDBY within the next 6 hours.

With the number of channels OPERABLE one less than required by the MinimtumChannels OPERABLE requirement, be in at least HOT STANDBY within 6 hours.

4yA-

MILLSTONE - UNIT 2 3/4 3-5 Amendment No.

Serial No. 06-0841ADocket No. 50-336

Insert D

ACTION 7 - With one automatic bypass removal channel inoperable for one or morefunctions, either

a. disable the bypass channel within 1 hour, orb. place the affected trip units in bypass or trip within 1 hour, and either

1. restore the bypass removal channel and affected trip units toOPERABLE status within 48 hours, or

2. place the affected trip units in trip within 48 hours.

ACTION 8 - With two automatic bypass removal channels inoperable for one or morefunctions, either

a. disable the bypass channels within 1 hour, orb. place one affected trip unit in bypass and place the other in trip for

each affected trip function, within 1 hour, andrestore one automatic bypass removal channel and the associated tripunit to OPERABLE status for each affected trip function, within 48hours.

serial no. 06-0841b docket no. 50-336 attachment 2 · 2012. 11. 29. · serial no. 06-0841b docket...

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