ML20129E975

Rev 3 to Wide Range RCS Cold Leg Temp Indication Uncertainty

ML20129E975
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	10/18/1996
From:	Hallett C COMMONWEALTH EDISON CO.
To:
Shared Package
ML20129E920	List: ML20129E915 ML20129E949 ML20129E975 ML20129E983
References
22S-B-004E-192, 22S-B-004E-192-R03, 22S-B-4E-192, 22S-B-4E-192-R3, NUDOCS 9610280220
Download: ML20129E975 (16)

Text

- _ _ _._

Exhibit C NEP-12-02ZI Rivizian 1 CALCULATION COVER SHEET Zion Calculation No.: 22S-B-004E-192 DESCRIPTION CODE: 10 4 ZION NUCLEAR STATION SYSTEM CODE: _ RC TITLE: Wide Ranae RCS Cold Leo Temperature Indication Uncertainty l

REFERENCE NUMBERS Type Number Type Number PROJ 4950 i

4 COMPONENT EPN:

DOCUMENT NUMBERS:

4 EPN Number Compt Type Component Doc Type Document Number i

Contained Within see Section #5.2.1 DWGC See Sections 5.2.2 - 5.2.5 VTIP See Sections 5.7.2. 5.7.3 PROC See Sections 5.6.1 - 5.6.7 DATA See Section 5.2.1 CALCENG 22S-B-016E-001 CORR MSE-REME-0308 Rev.1 i

REMARKS: Initial issue 1

REV.

REVISION APPROVED DATE NO.

O Original issue qgg{

g

,g

~

961Oh8b35b 961022 swl PDR ADOCK 05000295 P

PDR

Exhibit C NEP-12-02 Revision 3 I

page 1 of 2 COMMONWEALTH EDISON COMPANY CALCULATION TITLE PAGE CALCULATION NO. 22S-B-004E-192 PAGE NO.: 1 OF 15

@ SAFETY RELATED 0 REGULATORY RELATED C NON-SAFETY RELATED CALCULATION TITLE:

Wide Range RCS Cold Leg Temperature Indication Uncertainty STATION / UNIT:

ZION /1&2 SYSTEM ABBREVIATION: RC EQUIPMENT NO.

Enclosed Within - See Section 5.2.1 PROJECT NO.

4950 REV: O STATUS: Approved QA SERIAL N,0. ORgHRON NO. N/A DATE:

N/A,,

hM)

DATE: g/r/!P6 PREPARED BY: Chuck Hallett REVISION

SUMMARY

Rev. ~0 - INITIAL !SSUE

/

ELECTRONIC CALCULATION DATA FILES REVISED: None (Name ext / size /date/ hour. min / verification method / remarks)

DO ANY ASSUMPTIONS IN THIS CALCULATION REQUIRE LATER VERIFICATION YES O NO @

REVIEWED BY: Steve McCarthy 6.M DATE: AflM%

REVIEW METHOD: hfiled kd,<a COMMENTS (C, NC OR Cl):

MC n gh CI),(.qM DATE: io-q -%

APPROVED BY: Dean Galanis issued. 9/3/96

Exhibit D NEP-12-02 Revision 3 j

COMMONWEALTH EDISON COMPANY CALCULATION TABLE OF CONTENTS PROJECT 4950 CALCULATION NO. 22S-B-004E-192 REV. NO. O PAGE NO. 2 DESCRIPTION PAGE NO.

SUB-PAGE NO.

TITLE PAGE 1

i TABLE OF CONTENTS 2

1. PURPOSE / OBJECTIVE 3

l

2. METHODOLOGY / ACCEPTANCE CRITSRIA 3

3. ASSUMPTIONS AND LIMITATIONS 4

4. DESIGN INPUT 5

5. REFERENCES 8

6. CALCULATIONS 10

7.

SUMMARY

AND CONCLUSidNS 15 ATTACHMENTS NONE l

4 i

J i

Issued: MA6

COMMONWEALTH EDISON COMPANY CALCULATION NO. 22S-B-004E-192 PROJECT NO.

4950 PAGE NO. 3 1.

PURPOSE / OBJECTIVE The purpose of this calculation is to determine the indication uncertainty of the Wide Range RCS Cold Leg Temperature Indication, under normal operating conditions. The minimum acceptable Low Temperature Overpressurization Protection (LTOP) enable temperature will also be determined.

2.

METHODOLOGY / ACCEPTANCE CRITERIA 2.1 Methodology 2.1.1 The methodology used for this calculation is presented in TID-E/l&C-10, " Analysis of Instrument Channel Setpoint Error and Instrument Loop Accuracy" Rev. 0 (5.4.1] and TID-E/l&C-20. " Basis For Analysis of instrument Channel Setpoint Error and Instrument Loop Accuracy", Rev. 0

[5.4.2].

i 2.1.2 The format for this calculation differs from that of TID-E/l&C-10, Rev 0, Exhibit B in order to comply with the format set forth in NEP-12-02, Rev 3.

2.1.3 Some instrument channels at nuclear power generating facilities perform functions that are critical for assuring the reactivity process is terminated, the reactor is safely shutdown, and the essential safety feature systems are initiated in a timely manner to mitigate the consequences of design basis accidents or transient events. For these channels, a very high confidence level in the estimation of totalinstrument channel error is appropriate for assuring that the instrument channel setpoint is established in a manner that allows the channel to perform its protective action during those events before critical safety limits aro reached.

Other instrument channels perform functions that provide reactor operators with information that allow them to assess the readiness of safety systems by monitoring various system parameters and allowing operators to verify whether the reading indicates that the system meets certain acceptance criteria depicted in the plant technical specifications. These functions require only a moderate confidence levelin the estimation of total instrume,nt channel error.

Accordingly, a graded approach methodology, has been established, following industry recommended practice [5.4.4, 5.4.6], where instrument channels are first classified into one of four levels (Level 1, Level 2, Level 3, and Level 4) according to the highest function served by the instrument channel. Then the errors in the channel modules are identified, documented, and propagated. Finally, the total error for the channel is determined by combining the errors using one of four methods, appropriate to channel level classification. Additionally, where applicable, the setpoint and/or allowable value and allowance for spurious trips (AST), are determined in the manner appropriate for the instrument channel classification The methodology used in evaluating the accuracy of the loop process measurements and setpoints differ from TID-E/l&C-10 Rev 0 in the following areas:

Magnitude of confidence interval estimates Method of combining non-random error terms Application of Drift Error REVISION NO.

O

j COMMONWEALTH EDISON COMPANY l

CALCULATION NO. 22S-B 004E-192 PROJECT NO.

4950 PAGE NO. 4 These differences are in accordance with a Level 3 graded approach methodology. Level 3 is i

used for calculating setpoints or loop accuracies, where the instrument functions are utilized for "EOP-non-operator actions and RG 1.97 Type B, C, D, and E parameters and Technical Specification Compliance Channels."

2.1.3.1 Magnitude of confidence interval estimates:

i Total erroris defined in Exhibit A of Reference 5.4.2 as: Te = to iIe Where:

t = confidence interval a = the total random error that affects the loop output Ie = the sum of the positive or negative non-random errors that affect the loop output, whicheveris applicable For this calculation a value of 1 will be used for t.

2.1.3.2 Method of combining Non-Random Symmetrical Error Terms Non-random symmetrical error terms will be combined utilizing the square-root-sum-of-the-squares (SRSS) method rather than the algebraic method.

2.1.3.3 Application of Drift Error The definition of the drift error term is changed to refer to the time dependent error associated with the performance of entire instrument channels, rather than the performance of individual components within an instrument channel. The drift term (D) is applied only in the calculation of total random error for the last module of the instrument channel. The minimum instrument channel drift error term will be the greater of known drift values or i1% of span per year (2a).

2.2 Acceptance Criteria' Not applicable to instrument uncertainty calculations 1

3.

ASSUMPTIONS AND LIMITATIONS l

3.1 In accordance with Reference 5.4.2, unless specific information is available to indicate otherwise, 1

published instrument vendor accuracy specifications are assumed to be random, normally distributed,2a uncertainties; equivalent to a 95.5% probability the device error will be bound by the vendors accuracy term.

3.2 Temperature, humidity, normal radiation, seismic, pressure, static pressure and over-pressure effects have been incorporated when provided by the manufacturer. Othenvise, these errors are assumed to be small and capable of being adjusted out each time the instrument is calibrated.

Therefore, unless specifically provided, errors can be assumed to be included within the instrument reference accuracy.

I 3.3 Power supply variations (eV) are assumed to be negligible due to the regulated and highly reliable sources of power supplied to the safety-related instrument busses.

REVISION NO.

0

COMMONWEALTH EDISON COMPANY CALCULAT!ON NO. 22S-B-004E-192 PROJECT NO.

4950 PAGE NO. 5 3.4 Current leakage errors (elRn) will be considered negligible due to the high insulation resistance values of instrument cable in normal (non-harsh) environments, in accordance with the purpose of this calculation, harsh operating environments will not be considered.

3.5 M&TE erroris based upon use of the Fluke 8842A. The applicable calibration procedures References 5.6.3 through 5.6.6 require use of a Fluke 8842A Digital Multimeter for DC voltage measurements.

3.6 The temperature effects on Measuting & Test Equipment due to differences between calibration facilities and field temperatures are minor relative to the calibration accuracy and is therefore statistically insignificant. The temperature effect on M&TE (TEMTE) will equal zero.

3.7 Readability Errors will be considered to ba random normally distributed 2a uncertainties based

{

upon Reference 5.4.5 which states " Based on common industry practice, the readability error is often defined as one-half of the smallest scale increment...In most cases, when the readability i

error is used as one-half the smallest scale increment, this can also be considered to be inclusive of any parallax error."

4.

DESIGN INPUT 4.1 Per Reference 5.4.7 Section 6.1.4.4., temperature streaming errors for the cold leg temperature sensor are 10*F.

4.2 MODULE IDENTIFICATION For brevity, instrument numbers within the calculation body refer to Loop 1(2)T-4138. The following table identifies all loops and instruments to which this calculation applies.

LOOP MODULE 1 MODULE 2 MODULE 3 1(2)T-4138 1(2)TE-413B 1(2)TQY-4138 /1(2)TM-413D 1(2)TR-413 1(2)T-4238 1(2)TE-423B 1(2)TQY-4238 /1(2)TM-423D 1(2)TR-423 1(2)T-4338 1(2)TE-4338 1(2)TQY-4338 /1(2)TM-433D 1(2)TR-433 1(2)T-4438 1(2)TE-443B 1(2)TQY-443B /1(2)TM-443D 1(2)TR-443 Table 1 REVISION NO.

0 J

COMMONWEALTH EDISON COMPANY CALCULATION NO. 22S-B-004E-192 PflOJECT NO.

4950 PAGE NO. 6 4.3 LOOP ELEMENT DATA Module #1 Module #3 Wide Range RCS Tc RTD Recorder-Green Pen

[5 2.1]

(5.2.11 Manufacturer Conex Corp -

Hacen Model number 741-10000 Optwnec-101 (174501)

Calerated Span input 0 to 700*F input 1 to 5 Vdc Output 93.035 to 237.0390 Output. O to 700*F Reference Accuracy 20 58*F G 32*F

[5.5.2]

20.5% Span

[5.7.31 20 94*F $ 212*F

• 1.95'F g 300*F 22.20*F G 350*F 22.42*F g 400*F 12.98*F g 500*F 13.11*F g 525'F 13.49'F g 600*F 23.62*F g 625'F 24.29'F g 750*F Statulity (DnR)

Not Annheehla

[2.1.3.31 Not Aa=*aa

[2.1.3.31 Humsdity Lwnste 20 to 90% Reistive Humedity

[5.5.21 Not *: - - _'

Temp. Effect N/A to temperature eenoors Not SW Radianon Effect Not Specsned Not *W Sesamic Effect Not Spacined Not hh Stenc Pressure N/A to electrical devices

• N/A to electncel dowces Pressure Effect N/A to electncel devices N/A to electncal douces Over Pressure Effect N/A to electncal devices N/A to electncel devices Power Supply Effect N/A to passwa dowce Not Sw Minor Dmesons N/A 10*F (5.5.31 Modulo #2 Eagle 21

[5.1.1]

uenufacturer weennohouse Model number ERI-03/EAO-01 Calltrated Span input 93.035 to 237.0300 (0 to 700*F) output 4 to 20 mAdc Total Normal 20.312% epen (t2.184*F)

Random Error o.

Total Normal Poseve

+0.026% epen (+0.182*F)

Non-Random Error %*

Total Normal Negeave

-0.026% span (-0.182*F)

Non-Random Error h-Table 2 REVISION NO.

0

COMMONWEALTH EDISON COMPANY CALCULATION NO. 22S-B-004E-192 PROJECT NO.

4950 PAGE NO. 7 4.4 LOCAL SERVICE ENVIRONMENT MODULE #1 MODULES #2, & 3

[5311

[5311 EQ Zone C1 At Locaten

'], Containment Auxikary Buildino 642' NORMAL CONDITIONS Temperature Ranoe 65'F to 120*F 74*F to 76*F Pressure 14 7 psia -01 +0.3 Atmospherm Humedity 10 to 50% RH 35 to 45% RH Radiation 2 x 10' RAD Maximum integrated exposure 1 x 10* RAD Total maximum integrated dose.

[40 years + DBEl Table 3 4.5 CAllBRATION PROCEDURE DATA Module #1 Module #3 Wide Range RCs Tc RTD Recorder. Green Pen

[5 6 3 thru 5 6 61 Cahbrated input Range O to 700*F Auto Cahbration. MMI Dagstal input to Loop Processor input Span 700*F N/A. Ogital Output Range g3.035 to 237.0390, O to 700*F Output Span 144 0040 700*

Settino Tolerance Not Apphcable - RTDs are not cahbrated 27.27'F includes EAO & Recorder Table 4 4.6 MEASURING & TEST EQUIPMENT I

4.6.1 Fluke 8842A Digital Voltmeter References 5.6.3 through 5.6.6 specify the Fluke 8842A DVM as the only permissible voltmeter to be used when performing surveillance testing of the Eagle 21 Process Protection Upgrade System.

The Fluke 8842A digital voltmeter has the following uncertainty terms for measuring D.C.

voltages when calibrated within 1 year and operated in a 23tS*C environment:

[5.7.1]

2 VOLT RANGE MFGR Accuracy:

slow) 0.003% RDG + 2 counts medium) 0.003% RDG + 4 counts fast) 0.003% RDG + 2 counts Resolution:

slow) 10 pV medium) 10 pV fast) 100 pV 200 MILLIVOLT RANGE MFGR Accuracy:

slow) 0.007% RDG + 3 counts medium) 0.007% RDG + 5 counts fast) 0.007% RDG + 2 counts Resolution:

slow) 1 pV medium) 1 pV fast) 10 pV REVISION NO.

O l

COMMONWEALTH EDISON COMPANY CALCULATION NO. 22S-B-004E-192 PROJECT NO.

4950 PAGE NO. 8 4.7 MINIMUM LTOP ENABLE TEMPERATURE Per Reference 5.1.2, the minimum LTOP/COMS enable temperature under ASME Code Case 4

N 514 is 300.660*F d

i j

5 REFERENCES f

5.1 CALCULATIONS 5.1.1 22S-B-016E-001 Rev. O, " Eagle 21 Wide Range RTD Loop Accuracies" 5.1.2 MSE-REME-0308 Rev.1 Westinghouse Electric Company " Zion Units 1 & 2 Enable Temperature Calculations (including ASME Code Case N-514)"

5.2 DRAWINGS

}

}

5.2.1 Comed Instrument Database (IDATA), Specific Data Sheet, and Supplemental Data Sheet for l

the following instruments:

i i

1(2)TE-4138 1(2)TQY-4138 1(2)TM-413D 1(2)TR-413 1(2)TE-4238 1(2)TQY-4238 1(2)TM-423D 1(2)TR-423 t

1(2)TE-433B 1(2)TQY-433B 1(2)TM-433D 1(2)TR-433 1(2)TE-443B 1(2)TQY-4438 1(2)TM-443D 1(2)TR-443 l

5.2.2 22E-1-4945M, Rev. X, Loop Schematic Diagram Reactor Coolant System Part 11 5.2.3 22E-1-4945N, Rev. S, Loop Schematic Diagram Reactor Cootant System Part 12 l

5.2.4 22E-2-4945M, Rev. R, Loop Schematic Diagram Reactor Coolant System Part 11 5.2.5 22E-2-4945N, Rev. L, Loop Schematic Diagram Reactor Coolant System Part 12 5.3 ENVIRONMENTAL PARAMETERS 5.3.1 Zion Station Environmental Qualification Report; Appendix B - Plant Environmental Conditions Table, Revision 9 5.4 METHODOLOGY 5.4.1 TID-E/l&C-10, " Analysis of Instrument Channel Setpoint Error & Instrument Loop Accuracy",

Rev.0 5.4.2 TID-E/l&C-20, " Basis for Analysis of Instrument Channel Setpoint Error & Loop Accuracy",

Rev.0 5.4.3 WCAP-12582 " Westinghouse Setpoint Methodology for Protections Systems, Zion Units 1 and 2, EAGLE 21 Version", dated August 1991 (Westinghouse Proprietary Version)

REVISION NO.

0

COMMONWEALTH EDISON COMPANY CALCULATION NO. 22S-B-004E-192 PROJECT NO.

4950 PAGE NO. '

t 5.4.4 International Society for Measurement and Control Recommended Practice ISA-RP67.04 Part 11

• Methodologies for the Determination of Setpoints for Nuclear Safety-Related Instrumentation" 5.4.5 International Society for Measurement and Control Draft Technical Report ISA-dTR67.04.01

" Indication Uncertainties and Their Relationship With Indicated Values" Draft 2,1995 5.4.6 International Society for Measurement and Control Draft Technical Report ISA-dTR67.04.09 3

" Graded Approaches to Setpoint Determination" Draft 1,1994 5.4.7 WCAP-12523 " Bases Document for Westinghouse Setpoint Methodology for Protection Systems - Commonwealth Edison Company Zion / Byron /Braidwood Units," dated October 1990 l

5.5 MISCELLANEOUS 5.5.1 Computer Data base GSIN -Instrumentation System Version 0.4 5.5.2 Zion Station Equipment Qualification Binder EQ-ZN-036 "Conax Resistance Temperature Detector" 5.5.3 Zion Station Main Control Room Unit'1 Photo Mosaic 8/31/93 5.6 PROCEDURES I

5.6.1 GOP-1, Rev 11 " Plant Heatup" 5.6.2 NEP 12.02, Rev. 3 " Preparation, Review, and Approval of Calculations" 5.6.3 IMAS-1T-413B-4438 Rev. 2 " Wide Range Coolant Temperature Cold Leg Eagle Automatic Calibration (Rack 8)"

5.6.4 IMAS-2T-4138-4438 Rev. 2 " Wide Range Coolant Temperature Cold Leg Eagle Automatic Calibration (Rack 8)"

5.6.5 IMMS-1T-4138-443B Rev.1 " Wide Range Coolant Temperature Cold Leg Eagle Manual Calibration (Rack 8)"

5.6.6 iMMS-2T-4138-4438 Rev.1 " Wide Range Coolant Temperature Cold Leg Eagle Manual Calibration (Rack 8)

5.6.7 TSS-15.6.72, Rev.18, "RTD Cross Calibration" 5.7 VENDOR 5.7.1 Fluke 8842A Digital Multimeter Instruction Manual, Rev. 2 6/86 5.7.2 VETI W120-852 " Eagle 21 Process Protection Upgrade System - Volume 1 Description" Westinghouse Energy Systems Process Control Division 5.7.3 VETI W120-772 " Control and Prctection instrumentation System Volumes I and 11" Westinghouse Instruction Bulletin 18-133-01 "Optimac Electronic Recorder" January 1970 REVISION NO.

0

i COMMONWEALTH EDISON COMPANY CALCULATION NO. 22S-B-004E 192 PROJECT NO.

4950 PAGE NO.10 5.7.4 CWE-91-271 " Eagle 21 Rack Inaccuracies" Dated November 7,1991 1

6.

CALCULATIONS 6.1 CALCULATION OF MODULE ERRORS 6.1.1 MODULE 1 ERRORS 1

i 6.1.1.1 Determination of Wide Range RCS RTD Random Errors ei 1

j 6.1.1.1.1 RA (Reference Accuracy)

The RTD error used in this calculation will be 12.2*F, which is the most conservative value

{

bounded by 350*F (LTOP protection disabled @ 320*F).

[5.6.1]

RA = ^""W 2

j

,12.2* F 1

2 100% span

=

700*F span 0.157% span 4

6.1.1.1.2 CAL (Calibration Equipment Errors) i A cross channel calibration check is performed in Reference 5.6.7 where the Wide Range

(

RTDs are compared with the Narrow Range Protection Channel RTDs with an acceptable tolerance of *15'F. The Wide Range RCS Tcold RTDs are not adjustable therefore Measuring and Test Equipment uncertainties cannot influence the accuracy of the Wide i

Range RTDs; CAL =0 t

j 6.1.1.1.3 Calibration Setting Tolerance Uncertainty ST The Wide Range RCS Tcold RTOs are primary measurement elements and not adjustable, 4

therefore; ST = 0 i

6.1.1.1.4 Drift D 3

Per Methodology Section 2.1.3.3, drift is applied to the final module in the instrument loop.

Therefore; D=0 6.1.1.1.5 Determination of Random Errors a1 ci = * [ RA: + CAL + ST + D ji/2 2

2

= i [ (0.157%)* + (0)2 + (0): + (0): ji/2 REVISION NO.

0 4

v

COMMONWEALTH EDISON COMPANY i

CALCULATION NO. 22S-B-004E-192 PROJECT NO.

4950 PAGE NO.11

= 10.157% span 6.1.1.2 Determination of Wide Range RCS RTD Non-random Errors Ie( and Ie(

No module non-random errors are identified by the vendor, therefore Ie; = 0% span j

Iei = 0% span 6.1.2 MODULE 2 ERRORS 6.1.2.1 Determination of Wide Range RTD Eagle 21 Random Errors 0 2 From Reference 5.1.1, the Level 3 Graded Approach Eagle 21 components total normal environment random error is equal to 10.312% span Combining the RTD random error ei with the Eagle 21 random error, a = i a +(Eagle 21 Random Error)'

2 2

'(0.157% span)' +(0.312% span)*

=

= 10.349% span 6.1.2.2 Determination of Wide Range Eagle 21 RTD Non-random Errors Ie2* and Ie2~

From Reference 5.1.1, the Level 3 Graded Approach Eagle 21 components total normal environment non-random errors are equal to 10.026% span Ie; = + (Iens )* + (Ii,,,,,)* '

= +(0" + 0.026% span ]"'

2

= +0.026% span Ien; = -;(Ient)' + (ii.,.,,f

=-(08 + 0.026% span )"

2

= -0.026% span i

REVISION NO.

O i

I i

COMMONWEALTH EDISON COMPANY CALCULATION NO. 22S-B-004E-192 PROJECT NO.

4950 PAGE NO.12 6.1.3 MODULE 3 ERRORS 6.1.3.1 Determination of Wide Range RCS Temperature Recorder Random Errors o3 6.1.3.1.1 RA (Reference Accuracy) j Accuracy = 10.5% span RA = "" 'Y

_10.5% span 2

= 0.25% span 6.1.3.1.2 CAL (Calibration Equipment Errors) 6.1.3.1.2.1 MTE - Wide Range RCS Temperature Recorder The Wide Range RCS Temperature Recorder is considered as M&TE to capture the

}

readability error of the recorder.' All other terms are not applicable and considered as zero.

6.1.3.1.2.1.1 Calibration Accuracy CAMTE:

The Wide Range RCS Temperature Recorder is string calibrated with the Eagle 21 analog output modules. Therefore the CAMTE error has been previously considered.

CAMTE = 0 6.1.3.1.2.1.2 Temperature error of M&TE TEMTE:

Temperature errors are included in the Reference Accuracy of the Wide Range RCS Temperature Recorder TEMTE, = 0 6.1.3.1.2.1.3 Other M&TE Errors OTHERMTE No further M&TE errors are identified OTHERMTE, = 0 I

t l

REVISION NO.

O i

COMMONWEALTH EDISON COMPANY CALCULATION NO. 22S-B-004E-192 PROJECT NO.

4950 PAGE NO.13 6.1.3.1.2.1.4 Reading error of M&TE REMTE Per Reference 5.4.1, reading error is i 1/4 of the smallect graduation interval on an indicator.

j The smallest graduation interval on the Wide Range RCS Temperature Recorders is a

10*F.

1 4

1TF E

4

]

REMTE, =t(7M-TF) 100% span

=10.357% span 4

6.1.3.1.2.1.5 MTE - Wide Range RCS Temperature Recorder i

r 31/2 l

urg., 'C"*E + "E

"**"E s ag2

+

+

i 2

2 2

s i

j 1

-2 ((o +0+0)2 +(a357% spen)2]

1/2

-20357% spen c

6.1.3.1.2.2 Calibration Error CAL C4.-t(M7g)'"

=t(Q357% spen)*

v i

=t 0.367% spun 4

j l

6.1.3.1.3 Setting Tolerance ST l

Calibration procedures require the analog outputs As Left values to be within i 7.27'F, 7.27'F j

Setting Tolerance,' = i(700*F-0*F) 100% span l

= 1039% span Calculate the setting tolerance uncertainty for one standard deviation; i

• E*"

ST=

=

3 3

= iO.346% span l

I l

6.1.3.1.4 e3 nput (Random Error at Module input) i

{

e3 input = e2 = i 0.349% span s

4 i

i REVISION NO.

O l

i

'r'T

COMMONWEALTH EDISON COMPANY CALCULATION NO. 22S-B-004E-192 PROJECT NO.

4950 PAGE NO.14 6.1.3.1.5 Drift D Per the methodology [2.1.3.3], the 2e overall channel drift uncertainty equals 11% of span per 12 months. Per Reference 5.5.1, the calibration period of this channelis 18 months (550 days).

- 1/2 2a = 1 (1% span)2, '18 monds' 2 Drift (12 monthss

ik5% span Drift D

2"

[2.1.3.3]

_15% span 2

0.75 span 6.1.3.1.6 Readability Error READ Readability is one-half of one minor division = 110*F/2 = iS*F Readability 2, 15 F READ

2 2

=

700 F 700*F 100% span 100% span

= iO.357% span 6.1.3.1.7 Determination of Random Errors e3

= * [ RA* + CAL + ST* + a3 nput' + D + READ }"

2 2

2 i

c3

= i[(0.25% span)3 + (0.357 % span)" + (0.346 % span):,,,

+ (0.349% span) + (0.75% span)* + (0.357% sp'an) ]"

= 11.059% span 6.1.3.2 Determination of Wide Range RCS Temperature Recorder Non-random Errors Ie3* and Ie3-No Wide Range RCS Temperature Recorder non-random errors are identified by the vendor, therefore;

[5.7.3]

Ie; = + (Ie;)* + (0)'

= +(0.0268 + O 2 ['

= +0.026% span Ie; = - (re;)* + (0)'

= -[0.0268 + 0 ' [*

= -0.026% span REVISION NO.

O l

i

COMMONWEALTH EDISON COMPANY CALCULATION NO. 22S-B-004E-192 PROJECT NO.

4950 PAGE NO.15 6.2 TOTAL INSTRUMENT CHANNEL ERROR 6.2.1 Positive Normal Total Instrument Channel Error (Ten')

Ten + = (1. a3 +

• "3 700* F

= (1. +1059% span + 0.026% span).?00 F

= +7.595 F 6.2.2 Negative Normal Tota! Instrument Channel Error (Ten-)

(1.a3 +""3 Ten = -

= -l(1. +1059% span + 0.026% span). 700 Fl

= -7.595'F 6.3 MINIMUM LTOP/COMS ENABLE TEMPERATURE Enable Temperature

= Enable Temperature + Ten

• nuo

= 300.660*F + 7.595'F

= 308.255'F 7.

SUMMARY

AND CONCLUSIONS Wide Range RCS Teow Temperature Recorders have a total loop uncertainty of 17.595'F.

The application of this uncertainty is limited to instrument functions utilized for EOP non-operator actions and Reg Guide 1.97 Type B, C, D and E parameters and Technical Specification Compliance Channels under normal environmental operating conditions.

The minimum acceptable temperature for enabling LTOP/COMS is 308.255'F.

FINAL PAGE REVISION NO.

0

l Attachment F Zion Calculation No. 22S-B-004E-166, Revision 0

.