ML17087A264

Enclosure 2 - Response to Request for Additional Information Regarding License Amendment Request for Reactor Protection System (RPS) Electrical Protection Assembly (EPA) Electric Power Monitoring Surveillance Requirements (Srs) 3.3.8.2.2 an

ML17087A264
Person / Time
Site:	Brunswick
Issue date:	03/01/2017
From:	Duke Energy Progress
To:	Office of Nuclear Reactor Regulation
References
BSEP 17-0019
Download: ML17087A264 (74)

Text

Brunswick Steam Electric Plant, Unit Nos. 1 and 2 Renewed Facility Operating License Nos. DPR-71 and DPR-62 Docket Nos. 50-325 and 50-324 BSEP 17-0019 Enclosure 2 Response to Request for Additional Information Regarding License Amendment Request for Reactor Protection System (RPS) Electrical Protection Assembly (EPA) Electric Power Monitoring Surveillance Requirements (SRs) 3.3.8.2 .. 2 and 3.3.8.2.3 Nuclear Generation Group Calculation 1 C71. -0016, Revision 1, Reactor Protection System Power Monitor Overvoltage, Undervoltage, Underfrequency, and Time Delt!lY Uncertainty and Setpoint Calculation SYSTEM# 1080 CAL C SUB-TYPE__...lc

___ s ____ _..... PRIORITY

___ _ QUALITY CLASS__._A..;.__

__ _ NUCLEAR GENERATION GROUP 1C71-0016 (Calculation#)

Reactor Pr.otection System Power Monitor Overvoltage, Undervoltage, Underfrequency, and Time Delay Uncertainty and Setpoint (FOR RPS 1-C71-EPA1(2,3,4,5;6)) (Title including structures, systems, components)

UNIT 1 D CR3 D HNP D RNP D NCP DALL APPROVAL Electronically Approved REV PREPARED BY REVIEVVED BY SUPERVISOR 0 Signature Signatwe Signature Name *Name Name Bruce Crabbs Steven C. Kincaid Jim McPadden Qate I Date D1:1te 08/2.1/96 08/21/96 08/22/96 1 Signature Signature Signature Electronically Signed Electronically Signed Electronically Signed Name Name Name Jeff Suggs Russ Cusick Theodore J. Powers Date Date Dale Page Rev. i 1 ii 1 iii 1 iv 1 1 1 2 0 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10* 1 11 1 12 1 13 1 14 1 15 1 Calculation Number: 1C71-0016 Revision Number: 1 Page: i of iv LIST OF EFFEC-TIVE PAGES Page Rev. Page Rev. Page Rev. 16 1 35 1 54 1 17 1 36 1 55 1 18 1 37 1 56 1 19 0 38 1 57 1 20 1 39 1 21 --1 40 1 *" 22 1 41 1 23 1 42 1 24 1 43 1 .. 25 1 44 1 26' 0 45 1 27 1 46 1 28 1 47 1 Attachments 29 1 48 1 No.

30 1 49 1 A 0 31 1 50 1 B 1 32 1 51 1 c 0 33 1 52 1 D 1 34 1 53 1 Rev.

,,'. # 0 Q8/22/9q' 1 ' [ ' -Cal9ulation Number: 1 c71.:po1'6 Revision Number: 1 Page: ii <:>f iv REVISION

SUMMARY

Revision .Sutnmary

. ' ORIGINAL ISSUE . Revised per AR 492852492852and.EC A general revision was performed.

Nul11erous miscellaneous were incorporated to provide general enhancement/clarification anc:t to address administrative issues. Such changes include, but are not limited to:

• Qf existing ASGO* SSPVs with the riew AVCO SSPVs .. Removal of the f:1µr:nidity Eff!9.cl in Qeten:niriing the in$t'rument

• *,

• Update of the*

Lmcertainty .

• Ca.lculCillion of:the TQU using .a. combined analysis method

• _Revis.ed dver:voltage and A Vs a.nd

• Setpoints

for the RPS

• l_hcluE?io.n ofa Document lnde>_cing

..,, ,, 1 Section Description Calculation Number: 1G71-0016 Revision Number: 1 Page: iii of iv TABLE OF CONTENTS List of Effective Pages ............................................................................................

i' Revision Summary ................................................................................................

ii Table of Contents .. -.........................................................

• .....................................

iii 1.0 Objective, .............................................................................................................

1 2.0 Loop Functional Description

................................................................................

1 2.1 Desqription

...................................

.-... .-............................................

-..............

1 2.2 Loop Diagram ...........................................................................................

2 3.0 References

..... , ....................................................................

-..................................

3 -3.1 Drawings .......................................................

-..............................................

3 3.2 Vendor Manuals-..........................................................................................

4 3.3* Procedures

.................................................

_ ..............................................

4 3.4 System Descriptions and Design Basis Documents

.................................

.4 3.5 Design Guides ....................... , .......................................

• ................ .... -. ..... 4 3.6 Industry Standards and References

.........................................................

5 3. 7 Other References

..................................................................................... 5 . 4.0 Inputs and Assumptions

...............................................................................

_ .. , ...... 6 5.0 Determination of Instrument Uncertainties

....................................................... , .. 9 5.1 Process Measurement Error ....................................................................

9 5.2 Instrument Uncertainties

.................................................. , .......................

9 6.0 Calculation of Loop Uncertainties

..............................................

.......................

38 6.1 Error Propagation

...................................................................................

38 6.2 Loop Uncertainties

................................. , ......................................

_ ..........

42 Section Description Calculation Number: 1C71-0016 Revision Number: 1 Page: iv of iv TABLE OF CONTENTS (CONT'D) 7.0 Determination of Trip Setpoint ............................................................... , ...........

43 7.1 Process .Limits ...................

'. .......................................................................

43 7 .2 Setpoint Determination

...........................................................................

44 7.3 Graphical of Setpoint ......................................................

50 8.0 Discussion of Results .............. , ....... -...................................................................

55 8.1 Summary .of Results ..........................................................

_ ........................

55 8.2 Recommended Action ..................... , ........ , ........ ,:**************_._.

.. , ..................

57 Attachments Number of Pages ATIACHMENT A-Telecon Re<<::ords

....................................................................... , ..... 2 ATIACHMENT B -Record of Design Verification

..........

................................................

5 ATIACHMENT C -Record of Owner's Review ...............................................................

2 ATTACHMENT D-Document Indexing Table ................................................ , ..............

2

1.0 OBJECTIVE

1C71.;0.016

• Revision Number: 1 Page: 1 of,57 The ofthis is to determineJhe*AlloWable V;:ll1.:1e (AV) a.nci Setpoint (SP) for the Undervoltage, Underfrequency arid Time tunoti9ns*

of System:i (RPS)

Protection Assemblies* (EPAs) 1"'.c11.:EPA 1 (2, 3, 4, 5, *and 6)'under normal environmental conditions

• 2.P LOOP FUNCTJONAL DESCRIPTION

.2.1 Description The !=lectrical Protection Assl?mplies (EPAs) i.n to a Nuclear.Regulatory.

Commission (NRC),concern tt:iat:a fa!lure*of the existing*

pn;>tective tile Motor-Generator sets coLJld res.ult in darjlage lo RPS .qamponents resulting in.a.potential .loss-of C(lpabflity fo scram the. plant. .

l;PAs th.e protective function h.e1d been prQvipeq by the unqualified M-G set *output breakers.

{Re.ference 3.4. t) . Tw.o i;;eismic;:\lly and envfronrn13ntallyiqusilifie,tj class. tE EPAs in series between each M:-G set and it$ respective

'RPS bus, and between the altern*ate p.ewer source and the RPS'J;>.uses:

E;ach *f::PA incl,qd¢s a circuit breaker and associated overvoltage, uridervoltage, and undedrequency circuits.

The EPAs proviqe redundant protection age1insfelectrical perturbations whiCh could damage RPS componen.ts. (Reference 3.7,2) The EPAs. prpvide; overvoltage, under.voltage, and. underfrequency protection at alt.times forthe 1 cohnected to the RPS pciwet by disconnecting the loads from the power sources when voltage at the Class 1 E loads. is outside its Jimi.ti;;r qr the freque.i:i¢y ii? ootsirje the rarige. bf -'5%. of 90 Hz. This*. i$ a saJety related performance requirement which is *necessary to prevent operation outside the limits within which the eqµipmentbeing powered from the supply .have been designed and qualified to operate continuously and without degradation. (Reference 3.4.t)

• Calculation Number: 1C71-0016 Revision Number: 0 Page: 2 of 57 The Equipment Data Base System (EDBS) lists the EPAs as Q.,CJass Ai Environmentally Qualified (EQ}, and Seismic Class 1. The uncertainties in this calculation are determined for normal temperature, pressure, and humidity conditions since the reilays do not perform a safety function relative to an accident scenario.

A seismic uncertainty will be included, if applicable, for an Operating Basis Earthquake (QBE) to cover the possibility of sequential.

accident conditions.

2.2 Loop Diagram R!J..CTOR PROUCTIDH 8Y8Te.M POWER &UPP.I. Y flEE.D -'f-C71..s-001ACB) 1-Ct1-EPA1(3)

--H lgh lr;ert!D Motor* Gonoral Et&ctric Modril Gonoral Eloatm MO<lol Gonorator (M-G) Set 9t4E175 Elccirlo&I 914E175 Protm:ilon A11r.c:imb)t Prolot;;tion Attoombly Input Voltage: 120VAC Input \'Ortaga:

12DVAC Output Voltsg*; 120 VAC Oulpul Voltllg*:

120 VAC Conti'ol Sulldmg 2:r El. RP.S PWR DIST -BUS "Nrsi -'1..C7t-VR-662'4

'\..C71*EPA5

'1.(:71-EPAB

-120 VA.C Vottage General Eteetric Model General Electric Model Rsgul1tor S14E1.76 D14Et76 Elootric:al Promc:tlon Auemb'l)I Proledlon Assembly Input VoliDg*: 120VAC Input Volt1g*. 120VAC Output Volb.lgo:

120 VAC Output Vo!Ulge: UO VAC Control Buading 23' El. RPS PWR OisT -BUS 0 A" & "B" Instrument Tag No. Manufacturer 1-C71-EPA1

-General Electric 1-C71-EPA2 General Electric 1-C71-EPA3 General Electric 1-C71-EPA4 General Electric 1-C71-EPA5 General Electric 1-C71-EPA6 General Electric*

3.0 REFERENCES

3.1 Drawings

'Calculation Number: 1 C71-0016 Revision Number: 1 Page: 3 of 57 Model Location 914E175 Control Building 23' El. 914E175 Control Building 23' El. 914E175 Control Building 23' El. 914E175 Control Building 23' El. 914E175 Control Building 23' El. 914E175. Control Building 23' El. 3.1.1 1-FP-09688, Revision D, RPS MG Set Elementary Diagram 3.1.2 1-FP-55111, Sheet 0001, Revision 8, 1ED Reactor Prote.ction System (HISTORY) 3.1.3 F-95041, Sheet 0001, Revision 009, Unit 1 RPS Power Dist. Pnl. C71-P001 & RPS MIG Sets C71-S001A

& B Interconnection Wiring Diagram 3.1.4 F-94018, Revision 010, Unit No. 1 RPS M-G Set Cable Diagram 3.1.5 D-03056, Revision 011, Normal and Accident Conditions Service Environment Chart )

3.2 Vendor

Manuals Calculation Number: 1 C71-0016 Revision Number: 1 Page: 4 of 57 3.2.1 FP-81758, Revision K, Electrical Protection Assembly 914E175 3.2.2 FP-84116-1A, Revision I<. Test Equipment (Fluke 45 Multimeter) 3.2.3 FP-84116-5, Revision K, Test Equipment (Fluke PM6681) 3.2.4 FP-9264, Revision B, Oscilloscopes (Tektronix 524A) 3.3 Procedures 3.3.1 OMST-RPS21SA, Revision 005, RPS Elec Prot Assembly Chan Cal. 3.3.2 EGR-NGGC-0017, Revision 007, Prepara.tion and Control of Design Analyses and Calculations 3.3.3 E(3R-NGGC-0003, Revision 011, Design Review Requirements

3. 3.4 Deleted Reference 3.3.5 EGR-NGGC-0007, Rev. 11; Maintenance of Design Documents 3A System Descriptions and Design Basis DocumentS 3.4.1 DBD..,03, Revision 007, Reactor Protection System 3.4,2 B.SEP DBD-03, Revision 000, Reactor Protection System (General DBD -Report No. EDE-43-1190) 3.4.3 SD-03, Revision 011, Reactor Protection System 3.5 Design Guides 3.5.1 EGR-NGGC-0153, Rev. 10, Engineering Instrument Setpoints Caiculation Number: 1C71-0016 Revision Number: 1 Page: 5 of 57 3.6 Industry Standards and References 3;6.1 ISA Standard S67.04, Part I, Approved May 2006, Setpoints for Nuclear Instrumentation (Information Only) 3.6.2. ISA Recommended Practice RP67.04, Part II, Approved December 0, Methodologies for the Determination of Setpoints for Nuclear Safety-Related Instrumentation (Information Only) 3.6.3 USNRC Regulatory Guide 1.105, Revision 3, Instrument Setpoints for Safety Related System (Information Only) 3. 7 Other References 3.7.1 3.7.3 3.7.4 3.7.5 3.7.6 3.7.7 3.7.8 3.7.9 3.7.10 Equipment Data Base System (EDBS) Updated Final Safety Analysis Report (UFSAR), Amendment 13, Section 7.2, Reactor Protection System Deleted EWR-7351VR, 10/02/89, Vendor Recommendation SIL 496; EPA Performance Plant Modification (PM) 81.-093, 9/18/85, RPS MG Set Protective Relays Seismic Upgrade EWR-5071, EPA Calibration Methodology Plant Modification (PM) 1-85-099, 10/15/85, EPA Relays Time Delay Setpoint Change General Electric Design Specification for Reactor Protection System, Document No. 22A 1480, Revision 3 QDP 938, Rev. 0, .Qualification Data Package for Scram Solenoid Pilot Valve (SSPV) Electrical Analysis for RPS System Vmtn and Vma.X Values (Attachment B, Rev. 1), EC 81018, Revision O.

3;7.11 '3.7 .. ,12 '3.7.13 Calculafiort Number:. 1071-0016 . / Revision NUrnber: 1 Page: *a. of 57* EC 61018,. Rev; 0, RPS Settings 0-FP-86202, Sh. 2, Rev. A, Scram Solenoid Pilot Valves CRD Hy:cirC1uli¢,contr.ol Unit .. . I . . .... * . . DR 296*, Rev. 0, Wyle Laboratories TestReport.44400R96:.1 Revtsion E11yiror:u1Jerital.*Qual_ificatio11 T,est Repc;>rt for Valve (AV) Scram Solenoid *PilotValves, Modef Number

• 4.0 INPUTS AND ASSUMPTIONS 4.1 The.DL for the RPS EPA Funptionfs 134 VA.C. This OL is qn the vendor specified .maxirru.intallowed operating

voltage forthe :scram *s.olehbid

• pilot 'la.Ive (SSPV) minimum* expected.

voltage drop from the $.SPV to* the RPp Per the*Avcq cJfi:tWi.ng 3 .. f.J2);.the h1C:!)(irr\urn a*perating voltage for SSP\1 is .132*VAC.

(1.20'+10%.VAG).

Per:reference 3:7.10, the mihJmum RPS EPA.to is 2 VAC. Therefore, thei:DL for the RPS EPA Overvoltage*Function fa 134VAC .(132 *+ 2 VAC). . , . . . . . . . .* . . AlthO,.ugh 134 VAC has been-:established.

asthe for funption,.the qu(Jlmed .

is OIJ. 1g5VAG .. 7.13): :12.5 VAC al the equC!tes to 127"-VAc at the "f e91] Spec Allowable Value (T$ AV) established,.at 127 VAG a,lthe EPA. anq associated Nominal Trip Setpoint (NTSP) will be established conservative to the* * ;,XV by an amtjunt or equal to the t9tal !oop CT.LU).

• tHe**iS AV c:1n'd NTSP values. Will cbnsid.ering maximum expected insfrume*nf uncertainties, that the maxlmumvolta9e at-the the ford¢termihing life: Any changes to the TLU or Margin .mustensure that the remains cohse!rvative, to thf: TS*AV by f!lri*a,qtount,grea,ter than or.e.q4al to the Any chan*ges to the TS AV require::te-evaluation of the equipment qualified .life per reference

• 4.2. The DL for the RPS.EPA Undervdltage Function is 95 VAC. This DL is 'based on the minimum qualifiea plus the expected voltage drop from the SSPV to the RPS*EPA. *Per reference.3.7

.. 13, the .. minimum qua!ifjed voltage for ti,e SSPV i$ 90 VAC. Per refererice 3.7.10, the maximum expepted voltage grop fro.in the RPS EPA to the SSPVs.ls 5 VAC. Therefore, the DL for the RPS EPA Undervoltage.

function is 95 VAC {90 + 5 VAC).

• Calculation Number: 1 C71-0016 Revision Number: 1 Page: 7 of 57 Although 95 VAC has been established as the DL for this function, the qualified life of the SSPV is based on 102 VAC at the SSPV (Reference 3.7.13). 102 VAC at the SSPV equates to 107 VAC at the RPS EPA. Therefore the Tech Spec Allowable Value (TS AV) will be established at 107 VAC at the RPS EPA and the associated Nominal Trip Setpoint (NTSP) will be established conservative to the TS AV by an amount greater than or equal to the total loop uncertainty (TLU). Establishing the TS AV and NTSP at these values will ensure, considering maximum expected instrument uncertainties, that the minimum voltage at the SSPV does not exceed the voltage used for determining the SSPV qualified life. Any changes to the TLU or Margin must ensure that the NTSP remains conservative to the TS AV by an amount greater than .or equal to the TLU. Any changes to the TS AV require re-evaluation of the equipment qualified life per reference 3.7.13. 4.3 The Design Limit for the RPS EPA Underfrequency Function is 57.0 Hz. This value is based on the protective circuitry requirement of -5.0% of 60 Hz as found in Reference 3.4.2. This is co.nservative based on the minimui:n qualified frequency of 56.5 Hz per reference 3*.7.13.

• 4.4 The Design Limit for RPS EPA Time Delay is 4.0 which corresponds to the Design Basis I Analysis va.lue found in Reference 3.7.7.

• 4.5 Jhe Electrical Protection Assemblies are required to be operable.

in Modes 1 and 2, and Modes 3, 4, and 5 (with any control rod withdrawn from a core cell containing one or more fuel assemblies) to support the requirements of Improved Technical Specifications.

4.6 Per the direction provided by CP&L, a deviation from reference 3.5.1 is being utilized for this calculation in that the term 11 Channel Operability Limit" (COL) is not used. 4.7 The normal and accident temperature ranges in the Cable Spread Room as found in the Service Environment Chart (Reference 3.1.5) are as follows: I I Normal I Accident I Minimum 40°F 40°F Average -------Maximum 104cF 104cF Calculation Number: 1C71-0016 Revision Number: 1 Page: 8of57 4.8 Per EGR-NGGC-0153, accident effects are considered NIA for the purpos,es of this calculation due to the location of the Electrical Protection Assemblies being in the Cable Spread Room of the <::;ontrol Building which is not expected to see any harsh environments as a result of any accident scenario.

4.9 The ca.libration frequency of the Protection Assemplies, as they appear in Section 2.2, is based on 24 months. 4.10 Response time for this function is not assumed in any of the plant accident analyses.

Therefore, response time for this function is considered not applicable.

4.11 The assumed calibration temperature is 65. °F to. 90 °F for these instruments in the Reactor Buil(fing. (Ref.. 3.5 .. 1) 4.12 No Temperature Effects (TE) value.is provided by the vendor (GE) for the i=PAs' time delay function and is assumed to be included in the instrument's Drift.

( Galculation Number: tC71-0016 Revision NumQ¢(: 1_

9of57 5.0 DETERMINATION OF INSTRUMENT UNCERTAINTIES

5.1 Process

Measurement Error 5.1.1 Pr6cess Measurement Effects (PME) There no effects asso_Ciated with the meai;urement of overvoltage, underVoltage, or underfrequency relative_

to-this instrument loop. As res.ult, 'is consider.ed NIA. -PME:= NIA_ 5'.1.2 Pri!'llary Accuracy (PEA)" The electrical protection is ptim;;iry sole of There are_ no primary element-accuracy as$pcialed with the* meas1,.ireh:lent

of undervoitage, or underfrequency*;

therefore, *pEA, ls considered NIA. PS\= NIA 5.2-Instrument Uncertainties_

5.2.t Model 914E175 Electrical.Rrotection A$sembly-Overvoltage Protection Function

• Rpnge: 1:17 to 134 VAC (Reference 3;2.1) 5.2.1.1 Reference Accuracy CRA EPAf (Reference 3.2.1) Reference 3.2:1 no.t specify reference accuri:iqy; however it does lista Trip Thr$1shold Variation.

Per GE's deijnitib_n, the_ Trip:Threshold Variation isthevoltage band before the adjusted trip point within-Which the logfc card can sem;e and prod1.1ce a trip signal to the_ circuit,breaker.

lhis

!s s -1,00 VAC for the oyerve>lta*ge function.

Since a negative bias would cause the trip to occur below the trip tfle rnost cqnservative approach f9r'the dvervoltage setpoint determination is to assume there is. nb negative an(! RA is e_qual to zero.

,--5.2.1.2 5.2.1.3 5.2.1.4 Calculation Number: 1 C71-0016 Revision Number: 1 Page: 10 of 57 Drift CDR EPAf (Reference 3.2.1 and Attachment A General Electric defines drift for the Electrical Protection Assembly as the amount the adjusted setpoint is affected by large variations in temperatura.

For the purposes of this calculation, this uncertainty*

s'hall be considered the temperature effect due to the uncertainty amount not being time dependent.

In addition, per the information contained in Attachment A, any uncertainty amount for drift is included in the temperature effect. Therefore; drift is considered N/A. DR EPA= NIA Temperature Effect (TE EPAl (Ref. 3.2.1 and Attachment A) Reference

3.2.1 states

the amount that the setpoint will change with to large variations in temperature as s -0.60 VAC at 40°F and :s; +1.00 VAC at 137°F. Utilizing the ternperature values for the Cable Spread Room as listed in Input 4.7 (40 to 104°F), an uncertainty of+/- 0.6 VAC will be utilized bas.ad on a delta of 35 degrees (75 -40). TE EPA= +/- 0.6 VAC Static Pressure Effect (SPE EPAf Static pressure effect is only applicable to differenUal pressure devices in high static pressure process service. Electrical Proteption Assemblies are electronic instruments which do not experience any process pressure.

Static pressure effect is considered NIA for the purposes of this calculation.

SPE EPA= NIA 5.2.1.5. 5.2.1.6 5.2.1.7 5.2.1.8 Calculation Number: 1C71-0016 Revision Number: 1 Page: 11 of 57 Overpressure Effect (OP EPAf Overpressure effect is applicable only: to those instruments which may experience a higher process pressure than the pressure at which the instrument is rated. Electrical Protection Assemblies are electronic instruments which do not experience any direct contact with process pressure and therefore will not experience an overpressure effect. Overpressure effect is considered NIA for the purposes of this calculati.on.

OP EPA== N/A Power Supply Effect (PSE ei=>Al (Ref. 3.2. 1 and Attachment A) Power supply effect on the trip setpoint of the Electrical Protection Assemblies is considered NIA per the information in Reference 3.2.1 and Attachment A. PSE EPA= N/A Accident Temperature Effect {ATE ePAl Per Input 4.8 of this calculation, Accident Temperature Effect associated with an accioent scenario is considered NIA. ATE EPA= NIA Accident Pressure Effect (APE EPAf Per Input 4.8 of this calculation, Accident Pressure Effect associated with an accident scenario is considered NIA. APE EPA= NIA 5.2.1.9 5.2.1.10 5.2.1.11 5.2.1.12 Calculation Number: 1C71-0016.

Accident Radiation Effect {ARE EPAf Revision Number: 1 Page: 12 of 57 Per Input 4.8 of this calculation, Accident Radiation Effect associated with an accident scenario is cons.iderec:I N/A. ARE EPA= NIA Seismic Effect (SE EPAf (Ref. 3.2.1 and Attachment A) Reference

3.2.1 specifies

the minimum seismic requirements as follows: 1) Operating Base Earthquake (OBE) as .5.0 g; 2) Safe Shutdown Earthquake (SSE) as 7.0 g, and; 3) Frequency Spectrum of 1 to 33 l-fz. The EPAs have been qualified to the values listed above and per the information contained within Attachment A there are no additional seismic uncertainties up to these qualification values. Therefore, seismic shall be considered N/A. SE EPA= NIA Readability (RE ePAl The Ele*ctrical Protection Assemblies do not have an inc:!icator is considered in this uncertainty and Setpoint calculation.

The final output device of this instrument loop is not an indicator or recorder, therefore readc;lbility effect is considered N/A. RE EPA= NIA Setpoint With a Single Side of interest A single side of interest is not considered due to the conservative nature of the calculation and the guidance provided in Reference

3.5.1 which

states that other methods of reducing conservatism should be used prior to considering a single side of interest.

Therefore, any effect associated with single side of interest is considered N/A.

5.2.1.13 5.2.1.14 5.2.1.15 5.2.1.16 Calculation Number: 1 C71 Revision Number: 1 Page: 13 of 57 Vortex Considerations for Tank Levels Vortex considerations are not a concern for electronic instruments such as Electrical Protection Assemblies.

Therefore, any effect for vortex considerations for tank levels is N/A. Radiation Effect (RE EPAf (Ref. 3.2.1 and Attachment A) The Electrical Protection Assemblies are located in panels within* the Cabl.e Spread Roorn which is an environment in which adverse levels of radiation is not expected.

Reference

3.2.1 lists

.an operating of 2 x 10 E4 Rad Total lntegratedDose*(flD)'for radiation.

This radiation level erwelopes the TIO (2 x 10 E2 per Reference 3.1.5) for the Control Building location where the EPAs are located. It is assumed ihat there are no uncertainties associated for radiation effect up to this value and therefore, radiation effect shall be assumed to be negligible.

RE EPA= 0.0 VAC RFl/EMI Effect (REE EPAf (Ref. 3.2.1 and Attachment A) RFl/EMI effect on the Electrical Protection Assembly is considered NIA per the information .contained in Attachment A REE EPA= NIA Calibration Tolerance (CAL EPAl (Reference 3.3.1) The Calibration Tolerance as found in OMST-RPS21SA is +/- 0.50 VAC. Per the guidance provided in Reference 3.5.1, the Calibration Tolerance should be the largest value between Reference Accuracy and Calibration Tolerance of the device. Therefore, Calibration Tolerance shall be equal to+/- 0.5 VAC. CAL EPA= +/- 0.5 VAC 5.2.1.17 Calculation Number: 1 C71-0016 Revision Number: 1 Page: 14 of 57 Measuring and Test Equipment Error CMTE EPAf (Ref. 3.2.1) A Phillips Model PM2525 or equivalent Digital Multimeter (DMM) is used to read the VAC overvoltag*e setpoint of the EPA per procedure OMST-RPS21SA Currently, a Fluke 45 DMM is the meter of choice for OMST-RPS21SA.

For a Fast Reading Rate of voltages up to 750 VAC at frequencies between 50 Hz -10 kHz, the Fluke 45 has linear accuracy*

of +/-(0.5%+2).

When measuring voltage up to 300 VAC a_t a Fast Reading Rate, the resolution is 100 mV. For the Fl°uke 45 linear accuracy is expressed as +/-(percentage of reading+ digits). (Ref. 3.2.2)

• X =Accuracy of M&TE being analyzed (SRSS of RA, TE) 1) Fluke 45 DMM X (Reference Accuracy of DMM) = +/-0.5%+2 of reading = +/-(0.005*127.0 VAC + 2*100 mV) = +/-0.84 VAC X (Temperature Effect ef DMM) = +/- <0.1 *X (RA of DMM)r'C = +/-D.1*(0.005*127.0 VAC + 2*100 mV) I (}c = +/-0.1 *(0.84 VAC)c/ cc = +/-0.08 VACI °C The largest temperature to be considered is 32.2bC, therefore the temperature effect is based on the delta of 4.2°0 (32.2-28).

4.2 x +/- 0.08 VAC = +/-0.34 VAC 5.2.1.18 5.2.1.1.9 5.2.1.20 5.2.1.21 Calculation Number: 1C71-0016 Revision Number: 1 Page: 15 of 57 Therefore the total uncertainty associated with the Fluke 45 DMM, combining the effects using SRSS, is as follows: ; +/-.J (0.84)2 + (0.34)2 MTEEPA = +/-0.9VAC Bias (8 ePA} No bias effects have been identified, therefore bias shall be considered NIA. B EPA= NIA As.,Found Tolerance (AFT EPAf AFT EPA = = +/-'10.s 2 + 0.0 2 + o.9 2 +/-1.0 VAC As-Left Tolerance (ALT ePAl ALT i;PA = Calibration Tolerance (per Reference 3.5.1) +/-0.5 VAC Total Device Uncertainty (TDU ePAl* TDU EPA = = +/-.J (O.S + 0.9)2 + (0.6)2 + 0 = +/-1.5 VAC Calculation Number: 1c11.:0016 Revision Number: 1 Fiage:* 16:of57 5.,4.2 Model 9148175;.ElectricaJ Protection Assetnbly-Undetvoltage Protection Function *

95. to 117 VAO (Reference 3.2.1) 5.2:2'.1 I 5.2.2:2 Re!erence Accuracy (RA eeN. (Reference 3.2*.1) Reference 3.2.1 does not spec;ify refert:?nce accuracy; however it does: list a Trip Threshold Variation..

Per GE's definition, the TripThreshoJd Variation i$*the voltage band before the ac;tjusted trip point within Which tfle fogjc.card can sense and prodl1ce a trip signal to the: circuit breaker. This is. !: + *1 .. oo VA¢ fgr the underyolJage function.

Since a pt)sitive*bias would cau*se the .trip to occur above.the the ,rnqst ce>nservativ13;approa¢h for the under\ioltage setp(lint determination

• is to assume tnere ls. no positive.bias and RA is equal to zero. RA EPA= 0.0 VAC Drift (DR eeAl (Ref; 3.2.1 ;and Attqchnient A) Genetai 'Electric defines dtiftfor'tiie l::lectrical Protection Assembly 'as the amount the adjU$tedJ;efpoint is affected by i,n For the pi.Jrpoi;¢s pf this calculation, this'uncertainty snail be considered temperature di.Jl7 to ar:nount_

not being tirne. df;?pendent.

In ac;fdition,_

per the_ information contained .in A, aoy unc(i!rtainty amounl'for drift is ir,mluded in the terilperaturE:f effed. Therefore, dfift is considered NIA. DR EPA= NIA 5.2.2.3 5.2.2.4 5.2.2.5. Temperature Effect <TE EPAf Calculation Number: 1C71-0016 Revision Number: 1 Page: 17 of 57 (Ref. 3.2..1 and Attachment A) Reference

3.2.1 states

the amount that the setpoint will change with respect to large variations in temperature as .s -0.60 VAC at 40"F and s: +1.00 VAC at 13T'F. Utilizing the temperature values for the Cable Spread Room as listed in Input 4.7 (40 to 104i:iF), an uncertainty of :i* 0.6 VAC will be utilized based on a delta of 35 degrees (75 -40). TE EPA= :1: 0.6 VAC Static Pressure Effect {SPE.EPAf Static pressure effect is only applicable to differential pressure devices in high static pressure process service. Electrical Protection Assemblies are electronic instruments which do not experience any p*rocess pressure.

Static pressure effect is considered NIA for the purposes of this calculation.

SPE EPA= N/A Overpressure Effect (OR.ePAf Overpressure effect is applicable only to those instruments whi.ch may experience.

a higher pr0<;:ess pressure than the at which the instrument is rated. Electrical Protection.Assemblies are electronic instruments Which do not experience any direct contact with process pressure and therefore will not experience an overpressure effect. Overpressure effect is considered N/A for the purposes of this calculation.

OP EPA= NIA 5.2.2.6 5.2.2.7 5.2.2.8 5.i.2.9 5.2.2.10 Galculati_on Number: 1 C71-0016 Revision Number: t Page: 18 of 57 Power Supply Effect CPSE i;PAl (Ref.3.2.1 and Attachment A) Power supply effect on the trip setpoint of the Electrical Protection Assemblies is considered NIA per the information in Reference 3.2.1 and Attachment A. PSE EPA= NIA Accident Temperature Effect CATE i:'pAf Per Input' 4.8 of this calculation, Accident Temperature Effect with an accident scenario is considered N/A. ATE EPA= NIA Accident Pressure Effect (APE ePAl Per Input 4.8 of this c;:alculation, Accident Pressure Effect associated with an acCident scenario is considered N/A. APE* EPA = NIA AcCident Radiation Effect (ARE EPAf Per Input 4.8 of this calculation, Accident Radiation Effect associated with an accident scenario is considered NIA. ARE EPA= NIA Seismic Effect (SE EPAf (Reference 3.2.1 and Attachment A) Reference

3.2.1 specifies

the minimum seismic requirements as follows: 1) Operating Base Earthquake (OBE) as. 5.0 g; 2) Safe Shutdown Earthquake (SSE) as 7 .0 g, and; 3) Frequency Spectrum of 1 to 33 Hz. The EPAs have been qualified to the values listed above and per the information contained within Attachment A there are no 5.2.2.11 5.2.2.12 5.2.2.13 Calculation Number: 1 C71-0016 Revision Number: 0 Page:. 19 of 57 additional seismic uncertainties up to these quaiification values. Therefore, seismic effect shall be considered NIA.. SE EPA= NIA Readability

{RE EPAf The Electrical Protection Assemblies do not have an indicator which is considered in this uncertainty and Setpoint calculation.

The final output device of this instrument loop is not an indicator or recorder, therefore readability effect is considered N/A. RE EPA= NIA Setpoint With a Single.Side of Interest A single side of interest is not considered due to the conservative nature. of the calculation cind the guidance provide(j in Reference

3.5.1 which

that other methods of reducing conservatism should be used prior to considering a singie side of interest.

Therefore, any effect associated with single side of interest is considered NIA. Vortex .Considerations for Tank Lev.els Vortex considerations are not a concern for electronic instruments such as Electrical Protection Assemblies.

Therefore, any effect for vortex considerations for tank levels is NIA.

5.2.2.14 5.2.2.15 5.2.2.16 Radiation Effect (RE EF>Al Calculation Number: 1C71-0016 Revision Number: 1 Page: 20 of 57 (Ref. 3.2.1 and Attachment A) The Electrical Protection Assemblies are located in panels within the Cable Spread Room which is an environment in which adverse levels of radiation is not expected.

Reference

3.2.1 lists

an operating requirement of 2 x 10 E4 Rad Total Integrated Dose (TIO) for radiation.

This radiation level envelopes the TIO (2 x 10 E2 per Refert?nce 3.1.5) for the Control Building location where tne EPAs are located. ltis assumed that there are no uncertainties associated for radiation effect up to this value and therefore, radiation effect shall be assumed to be negligible.

RE EPA= RFl/EMI Effect (REE eP&). (Ref. 3.2.1 and ,Attachment A) RFl/EMI effect on the Electrical Protection Assembly is considered NIA per the information contained in Attachment A. REE EPA= NIA Calibration Tolerance EPAf (Reference 3.3.1) The Calibration Tolerance as found in OMST-RPS21 SA is +/- 0.50 VAC. Per the guidance provided in Reference 3.5.1, the Calibration Tolerance should be the largest value between Reference Accuracy and Calibration Tolerance of the device. Therefore,,

Tolerance shall be equal to :r 0.5 VAC. CAL EPA= +/- 0.5 VAC 5.2.2.17 Calculation Number: 1C71-0016 Revision Number: 1 Page: 21 of 57 Measuring and Test Equipment Error (MTE EPAl (Ref. 3,2, 1) A Phillips Model PM2525 or equivalent Digital Multimeter (DMM) is used to read the VAC overvoltage setpoint of the EPA per procedure OMST-RPS21 SA. Currently, a Fluke 45 DMM is the meter of choice for OMST-RPS21 SA. For a Fast Reading Rate of voltages up to 750. VAC at frequencies between 50 Hi: -1 O kHz,. the Fluke 4fr has a linear accuracy of +/-(0.5%+2).

When measuring voltage up to 300 VAC at a Fast Reading Rate, the resolutiqn is 100 mV. For the Fluke 45*1inear accuracy is expressed as +/-(percentage of reading + digits). (Ref. 3.2.2) X =Accuracy of M&TE being analyzed (SRSS of RA, TE) 1) Fluke 45 DMM X (Reference Accuracy of DMM) = +/-0.5%+2 of reading = +/-(0.005*117 VAC + 2*100 mV) = +/-D.79VAC X (Temperature Effect of DMM) = :::<0.1*X (RA of DMM)/°C = +/-0.1*(0.005*117 VAC + 2*100 mV) I "C = +/-0.1 *(0.79 VAC) I nc = +/-0.08 VACI "C The largest temperature to be considered is 32.2°C, therefore the temperature effect is based on the delta of 4.2 °C (32.2-28).

4.2 x +/- 0.08 VAC = t.0.34 VAC Calculation Nt1mber: 1 C71-0016 Revision Number: 1 Page: 22 of 57 Therefore the total uncertainty associated with the Fluke45 DMM, combining the effects using SRSS, is as follows: 5.2.2.18 5.2.1.20 5.2.1.21 = +/-J(0.79)2

+ (0.34)2 = +/-0.9 VAC Bias (8 EPAf No bia$ effects have been identified, therefore bias shall be considered N/A. B EPA= N/A As,..Found Tolerance (AFT EPAf AFT EPA = = +/-.J0;5 2 + 0.0 2 + 0.9 2 = +/-1.0 VAC As-LeftTolerance (ALT EPAf. ALT EPA = Calibration ToJerance (per Reference

= +/-0.5 VAC Total Device Uncertainty

{TDU epAf TDU EPA = = +/-J(0.5 + 0.9)2 + (0.6)2 + 0 = +/-1.5 VAC -I Calculation Number: 1C71-0016 Revision Number: 1 Page: 23 of 57 5.2.3 General Electric Model 914E175 Electrical Protection Assembly -Underfrequency Protection Function 5.2.3.1 5.2.3.2 Range: 57 to 60 Hz fReference 3.2.1) Reference Accuracy (RA EPAf (Reference 3.2.1) Reference 3.2.1 does not specific reference accuracy; however it does list a Trip Threshold Variation.

Per GE's definition, the Trip Threshold Variation is the voltage band before the adjusted trip point within which the logic card can sense and produce a trip signal to the circuit breaker. This uncertainty is :.; + 0.30 Hz for the underfrequency function.

Since a positive bias would cause the trip to occur below the trip setpoint, the most conservative approach for the

• underfrequency setpoint determination is to assume there is no positive bias and RA is equal to zero. RA EPA = 0.0 Hz Drift <DR EPAf (Reference 3.2.1 and Attachment A) General Electric defines drift for the Electrical Protection Assembly as the amo1Jnt the adjusted setpoint is affected by large variations in temperature.

For the purposes of this calculation, this uncertainty shall be considered temperature effect due to the uncertainty amount not being time dependent.

In addition, per the information contained in AttachmF,mt A, any uncertainty amount for drift is included in the temperature effect. Therefore, drift is con'sidered NIA. DR EPA= N/A 52.3.3 '5.2.3A Temperature Effect. <TE EPAl Calculation Number: 1C71-0016 Revision Number': 1 Page: 24 .of 57 (Ref. 3.2.t and Attachment A) Reference.

3.2.1 lists

the amount that the setpoirit will change With respect to. variations ih temperature from 75"F as+/-0:20 Hz. TE EPA.= +/- o.2Hz Static Pressure.

Effect <SPE ePAf Static' pressure effect is only 'applicable to differential pressure.devices in high static pressure process service. Electrical Protection c:ire elec,tronJc instrumem'ts.

which do not experience any pressure.

pressqre is cbn$i!:fered NIA tor.the purposes ofthis ca'lcu lation.

• SPE EPA .=£* N/A overpressure .Effect (OP EPAl Ove.rpressure effectis applicable only to those. instruments whk:h may experience a* higher process pressure.

than the pressure at which the instrument is rated. Ele.ctrical Protection Assemblies are electronic instruments which* do*

C]ny dfrect coritact wit,h ptC>cess pressure ahd therefore will norexperierice an overpressure effect effect is considered NIA for the p_urpos¢s

of this: calculation, OP EPA=N/A 5.2.3.6 5.2.3.7 5.2.3.8 5.2.3.9 5.2.3.10 Calculation Number: 1 C71-0016 Revision Number: 1 Page: 25 of 57 Power Supplll EffecUPSE EPA.l (Rat 3.2.1 and Attachment A) Power supply effect on the trip setpoint of the Electrical Protection Assemblies is considered NIA per the information in Reference 3.2.1 and Attachment A. PSE EPA= NIA Accident Temperature Effect (ATE EPAf Per Input 4.8 of.this calculation, Accident Temperature Effect associated with an accident scenario is considered N/A. ATE EPA= NIA Accident Pressure.

Effect (APE ePAf Per Input 4.8 of this calculation, Accident Pressure.

Effect associated With an accident scenario is considered NIA. APEEPA = N/A Accident Radiation Effect CARE EPAf Per Input 4.8 of this calculation, Accident Radiation Effect I associated with an accident scenario is considered NIA. ARE EPA= NIA Seismic Effect (SE EPAf (Reference 3.2.1 and Attachment A) Reference

3.2.1 specifies

the minimum seismic requirements as follows: 1) Operating Base Earthquake (DBE) as 5.0 g; 2) Safe Shutdown Earthquake (SSE) as 7.0 g, and; 3) Frequency Spectrum of 1 to 33 Hz. The EPAs have been qualified to the values listed above and per the information contained within Attachment A there are no 5.2.3.11 5.2.3.12 / 5.2.3.13 Calculation Number: 1C71-0016 Revision Number: O Page: 26 of 57 additional seismic uncertainties up to* these qualification values. Therefore, seis111ic effect shall be considered NIA . . SE EPA= N/A Readability (RE EPAf The Electrical.

Protection Assemblies do not have an indicator whi.ch is considered in this and Setpoint calculation!

The final output devi.ce of this instrument loop is not an indicator or recorder, therefore readability effect is considered NIA. RE EPA= N/A Setpoint With a Single Side of Interest A single side of interest is not considered due to the conservative nature'-of the calculation and the guidance provided in Reference

3.5.1 which

states that other methods of requcing conservatism sho.uld be used prior to considering a single side of interest.

Therefore, any effect associated with single side of interest is considered

_NIA. Vortex Considerations for Tank Levels Vortex.considerations are not a concern for electronic instruments such as Electrical Protection Assemblies.

Therefore, any effect for vortex considerations for tank levels isN/A.

5.2.3.14 5.2.3.15 5.2.3.16 Radiation (RE FPAf Calculation Number: 1C71-0016 Revision Number: 1 Page: 27 of 57 (Ref.

and Attachment A) The Electrical Protection Assemblies are located in panels within the Cable Spread Room which is an environment in which adverse levels of radiation is not expected.

Reference

3.2.1 lists

an operating requirement of 2 x 10 E4 Rad Total Integrated Dose {TIO) for radiation.

This radiation level envelopes the TIO (2 x 10 E2 per Reference 3.1.5) for the Building location where the EPAs are located. It is assumed that there are no uncertainties associated for radiation effect up* to this value* and therefore, radiation effect shall be assumed to be negligible.

RE !;PA= 0.0 Hz RFl/EMI Effect (REE EPAf (Ref. 3.2.1 and Attachment A} RFl/EMI effect on the Electrical.Protection Assembly is considered N/A per the information contained in Attachment A. REE EPA= NIA Calibration Tolerance

{CALepAf (Reference 3.3.1) The Calibration Tolerance as found in OMST-RPS21SA is +/- 0.10 Hz. Per the guidance provided in Reference 3.5.1, the Calibration Tolerance should be the largest value between Reference Accuracy and Calibration Tolerance of the device. Therefore, Calibration Tolerance shall be equal to+/- 0.1 Hz. CAL EPA = +/- 0.1 Hz 5.2.3.17 Calculation Number:

Revision Number: 1 Page: 28 of 57 Measuring and Test Equipment Error (MTE ePAf (Ref. 3.2.3) A Hewlett Packard Model 53268 or equivalent Digital Frequency Counter (DFC) is used to read the underfrequency setpoint of the EPA per procedure RPS21SA. Currently, a Fluke PM6685 is the DFC of choice for OMST-RPS21 SA. Systematic and Random Uncertc;iiinties are calculated with guidance found in Reference 3.2.3. 1) Systematic Uncertainty Timebase error is the maximum fractional frequency change in the timebase frequency due to all error sources (e.g: aging, temperature, and line voltage).

The Fluke PM6685 has a yearly calibration frequency

.(Ref. 3.7.1) and has the following systematic.frequenGY Aging Rate: < 5

• 10--6/ year Temperature (0 to 50°C in ref. to 23°C): < 1*10-s Line Voltage +/-10%: < 1*10-a The timebase uncertainty can be found by summing all /J.f/f values together and multiplying by the expected frequency:

= +/-(M/f Aging Rate+M/f Temp.+M/f I.inc vY'fexpectcd)

= +/-0.0009 Hz

2) Random Uneertainty Calqulation Number: 1CT1-0016 Revision Number: 1 Page: 29 of 57 The random uncertainty fot frequency measurement js .calculated as follows: (ZSO ps)2 +Trigger Error 2 Random Uncertainty

= +/- * *

• f Measuring Time

• Where: . . . 1.4

• Jeamp 2 + en 2 Tng ger Error = . .

• V . . Slew Rate:(5) at trigger point In solving fort.he Trigger Error let: Slew Rate= 2TrfV = 2rr

• 6QHz

• 120V * ,/2 = 6.4

• 10 4 V /s en 2* = OV(ne:gilihle) eamp 2 = 250ti.V And solving for the Trigger Error; , . _ 1.4

• Jczso *1D'"'" 6)2 + o _ . _9 Tngge1: Error -6.4 '* 104 -5..47*10 s In solving for the Random Uncertainty let: Measuring Time = 200ms (Factory Default) And solving for the Rand.om (Jncertainty:

(2.5

• lQ-10)2 + (5.47

• 10-9)2 Random Uncertainty

= +/- O.Z

• 60 Therefore, the random uncertainty for frequency measurement is approximately o Hz.

Calculation Number: 1C?1*0016 Revision Number: 1 Page: 30 of 57 3) Least Significant Digit Displayed (LSD Displayed)

The LSD Displayed will not be considered negligible since only two significant digits will be looked at during performance of SA. Therefore the total uncertainty associated with the Fluke PM66a5, combining the effects using SRSS, is as. fqllows: 5.2.3.18 5.2.3.19 5.2.3.20 = +/-.J (0.0009)2

+ (0)2 = +/-0.0009 Hz Bias <BEPAl No bias effects have* been identified, therefore bias. shall be considered N/A. 8 EPA= N/A As*Found Tolerance (AFT EPAl AFT EPA. = =

+ 0.0 2 + 0.00092 = +/-0.1,Hz As-Left Tolerance (ALT ePAl ALT EPA*= Calibration Tolerance (per Reference 3.5.1) -+/-0.1 Hz 5.2.3.21 Ca lcu latio_n Number: 1 C? 1-0016 Revision Number: 1 Page: 31 of 57 Total Device Uncertainty

<TDU = +/-J(d.1 + 0.0)2 + (0.2)2 + 0 -+/-0.2 Hz General Electric Model 914E175 Electrical Protection Assembly-Time Delay Function Range: 0.20 to 3.60 Seconds (Reference 3.2.1) 5.2.4.1 5.2.4.2 Reference Accuracy (RA EPAf (Reference 3.2.1) Reference

3.2.1 specifies

an uncertainty for the time delay as t 0.05 seconds at the low end (approximately 0.2 seconds) of the adjustable time delay and an uncertainty of+ 0.4 seconds/ -0.6 secondi;;

at th.e high end (3.6 seconds) of the adjustable time delay.* A conser\lative approach is used to obtain an uncertainty of +/- 0.16 seconds for reference accuracy.

This uncertainty is based on the desired setpoint of 1.00 second being 29.4% of span of 3.40 (3.60 -0.20) seconds. The largest uncertainty span of 0.55 seconds (0.60 -0.05} is multiplied by 29.4% to obtain+/- 0.16 seconds. RA.EPA= +/- 0.2 seconds Drift <DR EPAf (References 3.2.1 and General Electric does not specify a drift for the time delay. Since a drift value cannot be obtained from the rnanufacturer, EGR-NGGC-0153 p!iows for a drift value of +/-1.00% full scale for 18 months. The EPAs are calibrated at most every two years. Using the SRSS method, the drift would be calculated as follows:

5.2.4.3 5.2.4.4 5.2.4.5 Calculation Number: 1C71-0016 Revision Number: 1 Page: 32 of 57 DR EPA= +/- ((0.01 2

• 0.01 2))-0*5

• ls = 0.014s = +/- b.o seconds Temperature Effect <TE EPAf (Reference 3.2.1) \ As stated in Input 4.12, the Temperature Effect will be considered to be included in the Drift for the time delay function.

TEePA =NIA Static Pressure Effect(SPE EPAf Static pressure effect is only applicable to differential pressure devices in high static pressure process service. Electrical Protection Assemblies are electronic in!)truments which do n'ot experience any process pressure.

Static pressure effect is considered NIA for the purposes of this calculation.

SPE EPA= NIA Overpressure Effect (OP EPAf Overpresstire effect is applicable only to those instruments which may experience a higher process pressure than the pressure at which the instrument is rated. Electrical Protection Assemblies are electronic instruments which do not experience any direct contact with process pressure and therefore will not' experience an overpressure effect. Overpressure effect is considered NIA for the purposes of this calculation.

OP EPA= ,NIA 5.2.4.6 5.2.4.7 5.2.4.8 5.2.4.9 5.2.4.10 Calculation Number: 1C71-0016 Revision Number: 1 Page: 33 of 57 Power Supply Effect (PSE EPAl (Ref. 3.2.1 and Attachment A} Power supply effect on the trip setpoint of the Electrical Protection Assemblies i's considered NIA per the information in Reference 3.2.1 and Attachment A. PSE EPA= NIA Accident Temperature Effect (ATE EPAl Per Input 4.8 of this calculation, Accident Temperature Effect associated with ah accident scenario considered N/A. ATE EPA= N/A Accident Pressure Effect (APE ePAf Per Input 4.8 .of this calculation, Accident Pressure Effect associated with an accident scenario is considered NIA. APE EPA= NIA Accident Radiation Effect {ARE ePAl Per Input 4.8 of this calculation, Accident Radiation Effect asso.ciated with an accident scenario is considered NIA. ARE EPA= NIA Seismic Effect <SE EPN (Reference 3.2.1 and Attachment A) Reference

3.2.1 specifies

the minimum seismic requirements as follows: 1) Operati.ng Base Earttiquake (OBE) as 5.0 g; 2) Safe Shutdown Earthquake (SSE) as 7.0 g, and; 3) Frequency Spectrum of 1 to 33 Hz. The EPAs have been qualified to the values listed above and perthe information contaJiled within Attachment A there are no 5.2.4.11 5.2.4.12 5;2.4.13 5.2.4,14 Calculation Number: 1C11-0016 Revision Number: 1 Page: 34 of 57 additional seismic uncertainties up to these qualification values. Therefore, seismic effect shall be considered NIA. SE EPA= NIA Readability

{RE EPA.l The Electrical Protection Assemblies do nothave an indicator which is considered in this uncertainty anc;f Setpoint calculation.

The final output device of this instrument loop is not an indicator or recorder, therefore readability effect is conside*red NIA. RE EPA= NIA Setpoint With a Single Side of Interest A single side of interest is not considered due to the conservative nature of the calculation and the guidance provided in Reference 3.5 .. 1 which states that methods of reducing conservatism should be u*sed prior to considering a single side of interest.

Therefore, any effect associated with single side of interest is considered NIA. Vortex Considerations for Tank Levels Vortex considerations are not a concern for electronic instruments such as Electrical Protection Assemblies.

Therefore, any effect for vortex considerations for tank levels is NIA. Radiation .Effect .(RE EPtil (Reference 3.2.1) The Electrical Protection Assemblies are located in panels within the Cable Room which is an environment In which adverse levels of radiation is not expected.

Reference

3.2.1 lists

an pperating requirement of 2 x 10 E4 Rad Total Integrated Dose (TIO) for radiation.

This radiation level envelopes the TIO (2 x 10 E2 per Reference 3.1.5) for the 5.2.4.15 5.2.4.16 5.2.4.17 Calculation Number: 1 C71-0016 Revision Number: 1 Page: 35 of 57 Control Building location where the EPAs are located. It is assumed that there are no uncertainties associated for radiation effect up to this value and therefore, radiation effect shall be assumed to be negligible.

RE EPA::: 0.00 seconds RFl/EMI Effect (REE EPAf (Reference 3.2.1 and Attachment A) RFl/EMI effect on the Electrical Protection Assembly is .considered N/A per the information contained in Attachment A. REE EPA= N/A Calibration Tolerance (CAL ePAf (Reference 3.3.1) The Calibration as found in OMST-RPS21 SA is +/- 0.10 second. Per the guidance provided in Reference 3.5.1, the Calibration Tolerance should be the largest value between Reference Accuracy and Calibration Tolerance of the device. Therefore, Calibration Tolerance shall be equal to the Reference Accuracy value of +/- 0.2 seconds. CAL EPA = +/- 0.2 seconds. Measuring and Test Equipment Error (MTE EPAf. (Ref. 3.2.4) A Tektronix 5A48 or equivalent Oscilloscope is used to read the time delay setpoint of the EPA per procedure RPS21 SA. Currently, a Tektronix 524A is the Oscilloscope of choice for OMST-RPS21SA.

1) X (Reference Accuracy of Oscilloscope)

The delta-time accuracy is the most important specification for single-shot timing measurements because it specifies a timing measurement's worst-case deviation from the actual Calculation Number: 1C71-0016 Revision Number: 1 Page: 36 of 57 value. The following formula is used to calculate the Tektronix 524A's delta-time accuracy. (Ref. 3.2.4) Deltarime (0.15 *Si+ 25 ppm* I Reading I+ Time; Div /1000) Where: Digitizing Rate= 250 Megasamples/s (2 Channels ON) Si(Sample Interval)

= 4ns Reading= Ss Time/ Div = ls And solving for the Deltarime De.ltarimeAccuracy {0;15

• 4

• io-9 + 2.S

• 10-5

• ISsl + ls/1000) DeltaTime Accuracy=

+/-(0.15*4*10-9 + 2 . .5

• 10-5

• ISsl + ls/1000) Therefore, the delta-time accuracy is 0.0011s. 2) X (Temperature Effect of The operating teimperature range of the Tektronix 524A Oscilloscope is 0 to 50°C per ther manufacturer's manual. There is no uncertainty listed within the manufacturer's manual for temperature effect. Therefore, it is assumed that there is no uncertainty associated with temperature.

3) X (Readability of Oscilloscope)

Per engineering judgment an accuracy of 0.05% will be conservatively applied for the readability of the Tektronix 524A. Application of this 0.05% accuracy over a 1 second span equates to 0.05 seconds.

5.2.4.18 5.2.4.19 5.2.4.20 5.2.4.21 Theref<;>re, Calculation Numl:;>er:

1C71-0016 Revision Number: 1 Page: 37 of 57 MTEEPA = +/-.J(0.0011) 2 + (0.05)2 MTEEPA = +/-0.1 seconds Bias (8 EPA1 No bias effects have been identified, therefore bias s.hall be considered NIA. 18 EPA= NIA As-Found Tolerance (AFT EPAf AFT EPA = J 2 . 2 2 +/-ALTEPA + DREPA + MTEEPA = +/-v'o.2 2 + 0.0 2 + 0.1 2 = +/-0.2 seconds As-Left Tolerance (ALT EPA), ALT EPA= Calibration Tolerance (per Reference 3.5.1) = +/- 0.2 seconds Total Device Uncertainty (TDU ePAl = +/-.J (0.2 + 0.1)2 + (0.0)2 + (0.2)2 = +/- 0.4 seconds

6.0 CALCULATION

OF LOOP UNCERTAINTIES

6.1 Error

Propagation 6'.1.1 Group As-Found Tolerances (GAFT) 6.1.1.1 Overvoltage Protection GAFT= +/-AFT EPA +/- 1.0 VAC 6.1.1.2 Undervoltage Protection GAFT= +/-AFT EPA +/- 1'.0 VAC 6.1.1.3 . Undetfrequency Protection GAFT= +/-AFT EPA +/- 0.1 Hz 6.1.1.4 Time Delay GAFT= +/-AFT EPA +/- 0.2 seconds Calculation Number: 1C71-0016 Revision Number: 1 Page: 38 of 57 I Calculation Number: 1 C71-0016 Revision Number: 1 Page: 39 of 57 6.1.2 Loop As-Found Tolerances CLAFD 6.1.2.1 LAFT -Electrical Protection Assembly Overvoltage LAFT= +/-JAFT 5 p/ +/-v'i.02 +/- 1.0 VAC 6.1.2.2 LAFT -Electrical Protection Assembly -Undervoltage LAFT= + r;;:;;.;:-;.

-'1lir I EPA. +/- 1.0 VAC 6.1.2.3 LAFT -Electrical Protection Assembly-Underfreguency LAFT= +/-JAFTEP/ +/-v'o.1 2 +/- 0.1 Hz 6.1.2.4 LAFT -Electrical Protection Assembly -Time Delay LAFT= +/-jAFTEP/ +/-v'o.2 2 +/- 0.2 seconds Calculation Number: 1C71-0016 Revision Nl)mber: 1 Page: 40 of 57 6.1.3 Loop As-Left Tolerances (LAL T) 6.1.3.1 LAL T -Electrical Protection Assembly -Overvoltage LALT= +/-jALTEPAz

+/-./0.5 2 +/- 0.5VAC NOTE: Current ALT of +/- 0.50 VAC per MST procedure is acceptable.

6.1.3.2 LAFT -E'.lectrical Protection Assembly -Undervoltage LALT= r=--;

ePA +/-./o.s 2 +/- 0.5 VAC NOTE: Current ALT of+/- 0.50 VAC per MST procedure is acceptable.

6.1.3.3 LALT -Electrical Protection Assembly -Underfreguency LALT= +/-jALTgp/ +/-vo.1 2 +/- 0.1 Hz NOTE: Current ALT of+/- 0.10 Hz per MST is acceptable.

6 .. 1.3.4. Calculati.on Number: 1 C71*0016 Revision Number: 1 Page: 41 of 57 LALT --Electrical Protection Assembly -Time Delay LALT= +/-v'o.2 2 +/- 0.2 seconds 'NOTE: Current ALT of+/- .0.1(l*seccmdsperMST procedure is accepta'ble.

6.2 Loop Uncertainties Calculation Number: 1. C71-0016 Revision Number: 1 Page: 42 of 57 6.2.1 Total Loop Uncertainty

{TLU) -Overvoltage TLU = TDU +/-1.5 VAC 6.2.2 Total Loop Uncertainty (TLUl-Un'dervoltage TLU= TDU +/-1.S VAC 6.2.3 Totaf Loop Uncertainty CTLU) -Underfrequency TLU = TDU +/-0.2 Hz 6.2A Total Loop Uncertainty (TLU) -Time Delay TLU= TDU +/- 0.4 seconds

7.0 OETERMINATION

OF IRIP SETPC>iNT

7.1 Process

Limits 7 .1.1 Analytical/Design Limit Calculation Number: 1 C71-0016 Revision Number: 1 43 of 57 The DL for the RP$ EPA functions is defined in S$ction 4.0. 7 .1.2 Operational Limit Th_e Operational Limit fqr RPS EPA Undervoltage functions is 117 VAG Which is the nomJ.nal setting fpr the RPS MG *set voltc;ige regulator.

The op*erational Limit for RPS EPA Underfrequency functfon60 Hz Which istt)e n0.minal frequency of the RPS: MG S!3t. The Operational Limit for RPS EPATirne*

Delay is :0.2 seconds Which is the lqw end of the adjustable range of the time, )

, 7.2 Setpoint Determination Calculation Number: 1C71-0016 Revision Number: 1 Page: 44 of 57 7.2.1 RPS Power Monitor-Overvoltage Relay (Normal Power Supply Feed) (1-C71-EPA1, 2, 3, and 4) Parameter Vaiue Eouatf on Notes .. Desion Limit (DL) 134.0 VAC* NIA Ref. 4, 1 Ma rain 7.5VAC* M = DL -SP -TLU Other Uncertainties 0.5VAC OU = TLU -LAFT Loop 1.0VAC LAFT = SRSS (device AFT's} Tolerance Loop As-Left 0.5VAC LAL T = SR$S (device AL.T's} Tolerance Allowable Value (AV) :;127.0 VAC 0 . Setooint 125.0 VAC" SP = OL -TLU -M Reset Value NIA .. NIA Operational Limit 117 VAC NIA Ref. 7.1.2 *See Section 4.1 for the basis used .to establish the DL, TS AV, SP and associated margin. ***The Reset Value is NIA due to the fact that upon receipt of an overvoltage condition, the output breaker of the EPA assembly will trip and remain tripped until manually reset The EPA does not provide for an automatic reset of the output breaker, therefore reset is NIA_.

Calculation Number: 1071-0016 Revisio.n Number: 1 Paget 45 of 57 7.2.2 RPS Power,Mo11it,o.r,.

'(Altern.ate Supply Feed) {1-C71-EPA5' and 6) . . . . / . . .. '* .. .. " .... ,.,, , . ' Para Value Eauation Notes Deliitm Limit COL) 1.34.0.VAC, NIA Ref. 4. 1 ' Margin 7.5VAC* M = DL-.. SP -TLU *Other Unce'i'.tainties 0.5 V.A.C. OU ::::JL,U -I.AFT ' ., Loop I 1 .. o V.AC LAPT =

,(deviee AFTis) Tolerance Loop As-Left Tolerance 0:5VAC. LAL T = SRSS (device AL T's): Allowabl.e Value (AV)

VAC* * . ... Setpoint 125.0VAC SP :: DL.-TlU. -M Reset Vallie N/A*** NIA OperationaL Limit. 117 VAC NIA . Ret.7.t.2. . .. .. ' , . '* ..

Section 4, 1 f6rthe basis used to establish the TS*AV, SP and assodated margin.

Reset Value is NIA .due to the faet that upon receipt of an overvoltage coriditioh, the output breaker of the EPA assembly will trip and remain tripped until manuallf reset The EPA does *not provide .for an automatic reset of the *output breaker, therefore reset is NIA.

Calculation Number: 1 C71-0016 Revision Number: 1 Page: 46 of 57 7.2.3 RPS Power Monitor-Undervoltage Relay (Normal Power Supply Feed) (1-C71-EPA1, 2, 3, and 4) Parameter Value Equation Notes Desion limit {DL) 95VAC N/A Ref. 4.2 Marn in 12.5 VAC* M =SP -DL-TLU Other Uncertainties 0.5VAC OU = TLU -LAFT Loop As-Found 1.0 VAC LAFT = SRSS (device AFT's) Tolerance Loop As-Left 0,5VAC LALT = SRSS (device ALT's) Tolerance Allowable Value (AV) >107.0 VAC* AV =.SP-LAFT*

.. Setpoint 109.0 VAC SP = DL + TLU + M Reset Value NIA*** NiA Ooerational Limit 117 VAC NIA Ref. 7.1.2 *see Section 4.2 for the basis used to establish the DL, TS AV, SP and associated margin. *"* The Reset Value is NIA due to the fact that upon receipt of an undervoltagE!

condition, the output brea,ker of the EPA assembly will trip and remain tripped until. manually reset. The EPA does not provide for an automatic reset of the output breaker, therefore reset is NIA. ' \ '

Calculation Number: 1C71-0016 Revision Number; 1 Page: 47 of 57 7.2.4 RPS Power Monitor-Undervoltage Relay (Alternate Power Supply Feed) (1-C71-EPA5 and 6) ' ' Parameter Value Equation Notes Design Limit (DL} 95VAC NIA Ref. 4.2 Margin 12.5 VAC* M = SP -DL -TLU Other Uncertainties 0.5VAC OU = TLU -LAFT Loop As-Found 1.0VAC LAFT = SRSS (device AFT's) Tolerance Loop As-Left O.SVAC LAL T = SR.SS (device AL T's) Tolerance Allowable Value (AV) i!:107.0VAC*

AV= SP.-LAFT* s*etpoint 109.0 VAC SP = DL + TLU + M Reset Value NIA ..

• NIA Operational Limit 117 VAC NIA Ref. 7.1.2* *see Section 4.2 for the basis used to establish the DL, TS AV, SP and associated margin. *** The Reset Value is NIA due to the fact that upon receipt of an undervoltage condition, the output breaker of the EPA assembly will trip and remain tripped until manually reset The EPA does not provide for an aµtom;:itic reset of the output breaker, therefore NIA.

Calc;ulation Number: 1C71-:'0016 Revision Number: 1 Page: 4a-of57 HPS Power Monitor-Underlrequency Relay (Normal and Alternate Power Supply Feed) (1-C71-EPA1, 2, 3, 4, 5, and 6) .. . . ... Parameter Equation*

Notes Design Limit COL} 57 .. 0.Hz NIA Ref. 4.3 Marg.in 0.5 Hz' M . .,:

DL-TLU . Other L,lnc;ertainties

.. 0.1 Hz OU= TLU-LAFT .. , .. ,,. ., .. , ., .. .. . , ... ,,, .... . . .. . . . . Loop As-Found .0.1 Hz LAFT =-SRSS (device Tolerance

' . ..._,, *.** . .. .. .. *"> Loop As-Left n.1 Hz LAL T = !SRSS {device . Tolerance Al,. T's>' * .. -. Allowap!e Value (AVj Hz* .AV = $P ,_ LAFT" .. SetJ)oint 57.7 Hz SP= DL + TLU +:M .. Reset Value NIA*"( NIA .. Operational Limit. 60'Hz N/A Ref 1.1'.2 ' . *Total margin for this calculation is 0,5 Hz. Of this 0.5 Hz conservative margin, OA Hz was used to decrease the Allowable Value from the calculated value of 57.6 Hz to 57 .2 Hz for LER avoidance, * **The Reset Value is N/A due to the factthat upon.receipt of an underlrequency condition, output breaker of the EPA assembly will tripand remain tripped until manually reset The EPA does not provide fbr an automatic reset cifthe output breaker, therefore reset is NIA '

Calculation Number: 1C71-0016 Revision Number: 1 Page: 49 of 57 7.2.6 RPS Power Monitor-Time Delay (Normal and Alternate Power Supply Feed) (1-C71-EPA1, 2, 3, 4, 5, and 6) NOTE: The information contained within this table is not a Technical Specification requirement and is provided solely for use in revising the applicable MST procedures.

Parameter Value Eauation Notes Design Limit {DL} 4.0seconds NIA Ref. 4.1.4 .Margin 2.7 seconds M = DL -SP -TLU Other Uncertainties 0 .. 2 seconds OU = TLU -LAFT Loop As-Found 0.2 seconds LAi=T = SRSS (device Tolerance AFT's) Loop As-Left 0.1 seconds I.ALT= SRSS (device Tolerance AL T's) Allowable Value (AV) NIA AV=ASP + LAFT Setpoint 0.9 seconds SP = DL -TLU -M Reset Value NIA NIA Operational Limit N/A NIA 7 .3 Graphical Representation of Setpoint Calculation Number: 1 C71-0016 Revision Number: 1 Page: 50 of 57 7.3.1 RPS Power Monitor -Overvoltage Relay (Normal Power Supply Feed). to VAC CULAFT) 0.5 VAC CULALTl 0.5 VAC (LLALT) 1.0 VAC CLLAFTI I Voltage 134.0 VAC (DL) 127.0 VAC (AV) 126.0 (ULAFT) 125.5 (ULALT) 125.0 VAC (SP) 124.5 VAC (LLALT) 124.0 VAC (LLAFT) 117 VAG (OL) 7.5 (Margin)

Calculation Number: 1 C71-0016 Revision Number: 1 Page: 51 of 57 7.3.2 RPS Power Monitor-Overvoltage Relay (Alternate Power Supply Feed) 1.0 VAC (ULAFTl 0.9 VAC (ULAL Tl 0.5 VAC (LLALT) 1.0 VAC (LLAFTI I Voltage t 134.0 VAC (DL) 127.0 VAC (AV) 126.0 (ULAFT) 125.5 (ULAL T) 125.0 VAC (SP) 124.5 VAC (LLALT) 124.0 VAC (LLAFT) 117 VAC (OL) 7,5 (Margin) \

Calculation Number: 1C71-0016 Revision Number: 1 Page: 52 of 57 7.3.3 RPS Power Monitor -Undervoltage Relay (Normal Power Supply Feed) 1.0 VAC CULAFTl 0.5 VAC (ULALTl ----+---0. 5 VA C (LLALTJ 1.0 VAC (LLAFT) I Voltage 117VAC (OL) 110.0 (ULAFT) 109.5 (ULALT) 109.0 VAC. (SP) 10B.5VAC (LLALT) 108.0 VAC {llAFT). 107.0 VAC (AV) 95.0 VAC (DL) 12.5 {Margin)

Calculation Number: 1C71-0016 Revision Number: 1 Page: 53 of 57 7.3.4 RPS Power Monitor -Undervoltage Relay (Alternate Power Supply Feed) 1.0 VAC (ULAFTl 0.5 VAC fULAL n 0.5 VAC (LLALT) 1.0 VAC (LLAFT) 117 VAC (dL) 110.0 109.5 (ULALT)

VAC (SP) 108.5 VAC (LLAL D 108.0 VAC (LLAFT) 107.0 VAC (AV) 95.0 VAC (DL) 12.5 (Margin)

I I -Calculation Number: 1C71-0016 Revision Number: 1 Page: 54 of 57 7.3.5 RPS PowerMonitor-Underfrequency Relay (Normal and Alternate Power s*upply Feed) 60 Hz (OL) 0.1 Hz CULALT & ULAFT) 57.BO Hz (ULAL T & ULAFT) 0.5 (Margin) 57 .. 7 Hz

0. 1 Hz (LLAL T & LLAFT) 57.6 Hz (LLALT & LLAFT) 57:3 Hz (A$P) 57:2 Hz (AV) I Frequency 5.7 Hz(DL) a.o orscussroN o*F RESUL rs 8.1 Summary of Results Calculation Number: 1C71-0016 Revision Number: 1 Page: 55 of 57 8.1.1 Summary of Results -RPS Power Monitor -Overvoltage (Normal Power Supply Feed) Design Limit= 134.0VAC Allowable Value= $127.0 VAC Setpoint = 125.0 VAC_ As-Left Tolerance (ALT) = 0.5 VAC As-Found Tolerance (AFT)= 1.0 VAC 8.1.2 Summary of Results -RPS Power Monitor -Overvoltage (Alternate Power Supply Feed) Design Limit = 134.0 VAC Allowable Value= s127.0 VAG Setpoint = 125.0 VAC As-Left Tolerance (ALT)= 0.5 VAC As-Found Tolerance (AFT) = 1.0 VAC 8.1.3 Summary of Results -RPS Power Monitor -Undervoltage (Normal Power Supply Feed) .

• Design Limit= 95.0 VAC Allowable Value= ::?.107.0 VAC Setpoint = 109.0 VAC As-Left Tolerance (ALT)= 0.5 VAC As-Found Tolerance (AFT)= 1.0 VAC 8.1.4 Summary of Results -RPS Power Monitor -Undervoltage (Alternate Power Supgly Feed) Design Limit= 95.0 VAC Allowable Value = 107 .0 VAC Setpoint = 109.0 VAC _)

As-Left Tolerance (ALT) = 0.5 VAC As-Found Tolerance (AFT) = 1.0 VAC Calculation Number: 1C71-0016 Revision Number: 1 Page: 56 of 57 8.1.5 Summary of Results -RPS Power Monitor -Underfreguency

' Design Limit = 57 Hz Allowable Value=

Hz SetpoiQt = 57. 7 Hz As-Left Tolerance (ALT)= 0.1 Hz As-Found Tolerance (AFT) = 0.1 Hz 8.1.5 Summary of Results -RPS Power Monitor -Time Delay Design Limit= 4.0 seconds Setpoint = d.9 seconds As-Left Tolerance (ALT) = 0.1 seconds As-Found Tolerance (AFT) = 0.2 seconds 8.1.6 This calculation establishes an AllowableValue of s 127.0 VAC for the RPS Power Monitor -Overvoltage Relay for the Normal Power Supply Feed is adequate based on the uncertainties of the instruments in the loop used at the Brunswick Plant. 8.1.7 This calculation establishes an Allowable Value of 127.0 VAC for the RPS Power Monitor -Overvoltage Relay for the Alternate Power Supply Feed is adequate based on the uncertainties of the instruments in the loop used atthe Brunswick Plant. 8.1.8 This calculation establishes an Allowable Value 107.0 VAC for the RPS Power Monitor -Undervoltage Relay for the Normal Power Supply Feed is adequate based on the uncertainties of the instruments in the loop used at the Brunswick Plant. 8.1.9 This calculation establishes an Allowable Value of -107 .0 VAC for the RPS Power Monitor -Undervoltage Relay for the Alternate Power Supply Feed is adequate based on the uncertainties of the instruments-in the loop used at the Brunswick Plant.

Calculation Number: 1 C71-0016 Revision Number: 1 Page: 57 of 57 8.1.10 This calculation establishes a Setpoint of 57. 7 Hz for the RPS Power Monitor -Underfrequency Relay for both the Normal and Alternate Power Supply Feed is adequate based on the uncertainties of the instruments in the loop used at the Brunswick Plant. 8.2 Recommended Action 8.2.1 It is recommended that 125.0 VAC be the. new setpqint for the RPS Power Monitor Normal Power Supply Feed Overvoltage Relay. 8.2.2 It is recommended that 125.0VAC be the new setpoirit forthe RPS Power Monitor Alternate Power Suppiy Feed Overvoltage Relay. 8.2.3 It is recommended that 109.0 VAC be the new setpoint for the RPS Power Monitor Normal Power Supply Feed Undervdltage Relay. 8.2.4 It is recommended that 109.0 VAC be the new setpoint for the RPS Power Monitor Alternate P.ower Supply Feed Undervoltage Relay. 8.2.5 It is recommended that 57.2 Hz be the new*Allowable Value for the RPS. Power Monitor Normal and Alternate Power Supply Feed Underfrequency Relay. 8.2.6 All relevant BNP documentation requiring revision to implement the results of this calculation should be TELECON RECORD Date I Ti.me: August 7, 1996 / 1800 Calculation Number: 1 C71-0016 Revision Number: 0 Attachment A Page A1 of A2

Subject:

Seismic Uncertainty for General Electric Model 914E175 Electrical Protection Assembly Contact Person: Steve Swain -General Electric Co. Phone: 408-925-4746 Initiator:

Bruce Crabbs -EXCEL Services Corp., 24 Month Fuel Cycle PrdJect Phone: 910-457-3182 Mr. Swain was contacted to determine if there is any uncertainty associated with the Electrical Protection Assembly (EPA) relative to the seismic specifications as they appear in the vendor manual (GEK-97145, CP&L Document No. FP-81758).

The following,information was obtained:

Mr Swain stated that the EPA is expected to function with no effect on the setpoint should the EPA experience a seismic event up to the Seismic Qualifications as they appear in the GEK.

Date I Time: Contact Person: Initiator:

Subject:

TELECON RECORD August 20, 199611415 Calculation Number: 1 C71-0016 Revision Number: 0 Attachment A Page A2 of A2 Barry Simon, Ge.neral Electric Co. Phone: 408-925-2727 Bruce Crabbs, EXCEL Services Corp. Phone: 910-457-3182 Fax: 910-457-3014 General.Electric Model 914E175 Electrical Protection Assembly Uncertainties Mr. Simon (General Electric RPS System Engineer) was .contacted to determine the uncertainties associated with the General Electric Model 914E175 Electrical Protection Assembly used in the RPS electrical system at the Brunswick Nuclear Plant. The following information was obtained:

1) Drift and time period: 2) Temperature Effect: 3) Power Supply Effect: 4) Seismic Effect: 5) Radiation Effect: 6) RFllEMI Effect: Any drift associated with the EPA is included in the Temperature Effect. The temperature effect is listed as drift in the subject vendor manual. N/A. There* is rto quantitath1e amount for seismic effect. There is no quantitative amount for radiation effect.

The EPA is designed to be used in a mild environment such as a control room. The new logic cards corrects any previous effects and therefore RFl/EMI effect is NIA Re-cord of Doolgn Verification Ftm11 OENP..:109-01

{12194} , Design Verification:

Calculation Number: 1C71-0016 Revision Number: 1 Attachment 8 Page 81 of B5 Rovlek>n _ _.o..___ sl!]OO!llre bek1N of the (Lead) Designer Verlfler Is doCUITSfltation Ulat a design has been pefi01med ror above llsted design doei.Jrntlflt anrl MN errors or dofldenclea

!hot were Found have been c::ormc1ed.

Tho Verificabon has boon pertorrnsd In DCCOl"dance IAlltt1 proeied1.1ro OENP-309, Design Verlflc:.l/Jon, and ANSI N45 2 11-1974, Qualify Assuranett ReQuirt!menm Design Of Nuclt!ar -Powor Pfan_ts. The MOthod{G) ofverfficatlon used Is designated beJow CHECK ALL THAT APPLY.

WA t NIA Design VetifiM / Di!i.cipline (print) Design Verifier (Signature)

NIA I Design Verifier t Dmdpllne (prln!) VC<lfier (Slgrimure)

NIA f Design Verlfler I Dlsdplllle (print) Design Verifier (SjgnBture)

I OENP-3-09 . I Rev, o _ Qunllftcation Testing

/9(.; Olitti Dato Dale Drlte Page 11of1e I Calculation Number: 1C71*0016 Revision Number: 1 Attachment B Page 82of85 Design Verification Record of Error(s) or Deficiency(ies)

Form OENP-309-02 (12/94) No. Error or Deficiency requirinQ rework 1 Revise the calculation title to reflect the title in NRCS or revise the calculation title in NRCS to match calculation.

2 Revise reference 3.4.1 to revision # 001 verses revision #000. 3 Section 4.1, 4.2, and 4.3 add a reference for the Design Limit Values stated. 4 Section4.9 in the 3rd line the letter I in the word should not be.capitalized, also delete the words statistical methodology factor, and change the word possible tq realistic.

5 Add a section 4.10 to provide a discussion on time to this calculation.

6 Resolve issue on seismic effects by contacting the vendor (GE) to see if there are anv seismic effects for this device. 7 Can the single side of interest reduction technique be utilized in this calculation because this device provides both the overvoltage and under voltage trips? 8 Section 5.2.1.15 add. a comparison of expected Battery Room radiation doses to qualification doses in this .section.

9 Section 7 .1.2 provide a basis for the stated Operational Limits. I OENP-309 Rev. o Page 18 of rn I

NLJmber: 1071 .. 0016 Revision*

Number: 1 B Page B3ofB5 *oocument-1C71*0016 Revision 1 The signature below of the Lead Reviewer records that: -the review indicated below ha.s bee.n performed by tt}e l,.eaq Reviewer;

-appropriate reviews were performed and :errors/defi'ciericies (for all reviews performed) have.been resolved and these records are included in the design package; -th.e review was pertorrned iJ1 E(3R .. _NGGG-(}b03., '[81 Desigr:dlerificationReview Design RevieW D Alternate Calculation D qµptific,atior.i Testi(IQ D Engineering Review 0 Owner's. Review D

...

.........

CJ YES 0 NIA .Other are Russ.; Cusick. l&C (prinVsign)

DJscipline

'Item :i\Ja. EPA provides under frequency protecti6ri incorporated.

o.nly, remr;ive*reference tp +/., 5% of 60 Hz.

is referended twfoe EGR-"NGGC-0003 is Rev 1 t EGR-NGGC-0007 is Rev 1.1 RG 1.1_65 st}oul_d be lnform.ation Only referenee 1217/2011. .Date ResqfuJion

\ 3 0 Lower design limit references the 95 VAC value that is only acceptable for 4 seconds. Is this appropriate Design Limit?

• Upper design limit references 138 VAC, the SSPVs are only qualified to 120 +/1 10%. ls this appropriate design Limit? 4 5.2.1.3, 5.2.2.3, Temperature effect does not consider lower temperature (75 -40 = 35). 5 0 5.2.1.17, 5.2.2.17, 5.2.3.17, 5.2.4.17, why is 138/120/60/5 used vs setpoint of 127/107/5711 that would be measured during calibration?

• Cal standard uncertainty is not included in M& TE uncertainty 0

• Calculation Number: 1C71-0016 Revision Number: 1 Attachment B age a p 84 f 85 Per Reference

3.4.1 Section

3.2.2.5 95 VAC for at most 4 seconds is the minimum acceptable voltage excursion.

Page 4 of ESR 95-00378 explains how 95 VAC at 4 seconds was concluded.

Also the Time Delay Function of the RPS Power Monitor ensures such an excursion to 95 VAC doesn't last more than 4 seconds. -EDC 32365P (DR 279) qualifies the ASCO SSPVs to. operating continuously at 105 VAC. It is not preferable to operate the ASCO SSPVs below 105 VAC any extended period of time, but the Design Limit (100 VAC) should be chosen to prevent an condition and that undesired condition was determined to be. voltage transients and dips of less than 10 percent of 105 VAC. (Ref. 3.4.1 Section 3.2.2.4) The UDL will be changed to 134 VAC (120 VAC *1.1 + 2 VAC drop). Per Specification BX-E-014, the current ASCO SSPVs are at least rated 120 V +10%. This UDL is conservative as the minimum VQltage measured during WR/JO 95-ABZU1 was 2.7 VAC (ESR 95-00378).

Incorporated.

• These values are the bounding yalues for each measurement taken and are conservative in determining the EPA's MTE uncertainty.

Per resolution of Comment 3, Bullet 1 134 VAC is used in Section 5.2.1.17

• Cal standard is not required per EGR-NGGC-0153 and will not be included.

6 7 8 9 10 5.2.1.21, 5.2.2.21, 5.2.3.21, 5.2.4.21, per EGR-NGGC-0153, CAL and MTE should be summed algebraically before applying SSSR with other uncertainties.

My math yields +0.47/-2.47 for OV, +2.41/-0.41 for UV, and +0.6/-0.66 for UF.

• 5.2.3. 17, Time base uncertainty information provided is for the PM6685, the PM6681 has different values.

• The aging rate should be based on the frequency, which should be discussed here.

• Systematic/Bias error is not addressed, 5.2.4.2, ISA RP67.04.02 suggests drift is not linear so only whole intervals should be used (two 18 mo intervals added SSRS)

• 5.2.4.17, current rev of RPS21SA uses a TEK 5A48 scope.

• Sample interval 500 us = 2000 sis rate, is this the digitizing rate for the 1 s/div time base setting? Should state this in the calc.

• Typo in equation -extra 5 after 2.5

• Readability I would think should be based on ability to accurately place the cursors, the scope will have a digital readout of the time. 0.25s error is pretty huge. Humidity effect is deleted from the calc. FP-81758 states the EPA operating requirement is 10% to 95% humidity.

The cable spread room can be 10% ta 100%. The uncertainty analysis should address this condition.

FORM EGR-NGGC-0003-2-10 Calculation Number: 1C71-0016 Revision Number: 1 Attachment B Page 85 of 85 For conservatism, CAL and MTE will be summed. TDU in each affected section corrected_

/

• Incorporated.

• Incorporated.

• A major source of systematic error is the timebase.

Clarified the uTimebase Uncertaintyn to be the "Systematic Uncertainty" and the timebase is a part of this uncertainty.

Incorporated.

• Per discussion with those in the M& TE lab TEK 524A is typically used during OMST-RPS21SA.

Additionally, during t.he MST 10/14/09 the TEK 524A was used.

• Corrected.

Digitizing Rate taken as 250 Ms/s due to 2 Channels.

Therefore, Sample Interval will be 1 us*. And the Time/Div will be taken as 500us (Factory Initialization Settings)

• Corrected.

• Corrected.

In FP-81758 the Vendor provides doesn't provide any error value for a humidity uncertainty.

Since the 10-95% humidity range is an operational requirement, with no uncertainty provided, humidity is a limiting factor to the EPAs being operable.

For the EPAs humidity is an operational concern, rather than an instrument uncertainty.

This form is a QA Record when completed and included with a completed design package. Owner's Reviews may be processed as stand alone QA records when Owner's Review is completed.

Record of Ownor'a Review Form OENP-300.-02 (12194 Calculation Number: 1C71-0016 Revision Number: o Attachment C Page C1 of c2 DcelgnDoeumontfl Sotpolnt Cnrtultllion 1C71..0018 Rev.'---"=-------

Guidance for review: {prO\'lded by Responsil>la Manngar) The f,\lgnature below of tf!e Revfflwer ill docUmentntJon that l'I successfUI Review of the nbOVo !!sled de5ign doi:umsnl h.n been c:omp!Oted, AND .all)' errorn, deficiancfea, comments, and concerns.

identified during tho review proeeu. h.ave been ectreeied In the design document REVIEWER:

!!II 5u<9J , .

i¥c Prtntod nemsV Disc B*a..:2 -'9 '-Dat!'I Othor Dmelplln*

zw noo-'l.\NVV: ...... Printed name Oise Date Prfnl£id nama Disc Slgnolul't'!

Dll!EI Printed name Oise Sign.citure Dale Aj>provmd by: J. d.

\ .9/,tot./.14 Rwponslblo Manager /Sii11m1m Daw Printed Name I I OENP-310 I Rev o I Page 7of1 I Calculation Number: tc11.:o.015 Revision Nurpb13r:

o Attachment C Page G2 ofC2 .owner's Review Rec.ord of Comments Error or DeficJency reouirino rework 1 Tag #'s.".' Correct t;:1ci #'sto t-C71-EPA1,2,3,4,5,6; lncoroorate.cJ.

2 Design' Limits (OL) -The DL shoul.d be basep on 13ome limiting voltage or freqµency, not necessarily the instrument range. Per the GE spec tfle over voltage and under frequency limits appearfo based on a transient of 15% voltage and 5o/o frf3quency.

DBD-Cl.3 states thatthe under*voltage trip is based under voltage the SCRAM.solenoid valves. Testing was done at 95. ttolts witn . no effect.

the DL should be. 95V drop to the solenoids . 3 brift/TE*-The Drift term used appears to be a TE in that the error is.stated with re&pectto temp*erature and is not time based. Verify w/GE.

4 .GE-Verify wt GE that PSE, SE RE and REE are.bounded b¥ .RA. . h:tcoroorated.

5

• ssr .. SSI is CiPPlied.

tothe TLU butnotto the LAFT and OU. Th.is results*in a

• LAFT that is larger than-TLU.

• lhls could tesultin an AV thatexceeds the AL or doe.s not appropriately allow for OU. *Either perform a check of the AV versvs the AL-OU to verify AV js conservative,, or re.move .$$1.

SS!. 6 LAL T -LAL Ts/b equal to CAL. Also, indicate that the current cal tolerance is acceotable.

lncorooxated.

---I Calculation Number: 1C71-0016 Revision Number: 1 Attachment D Page 01of02 ATTACHMENT D Document Indexing Table Document ID Number Type (e.g., Cale No., Dwg. (e g. CALC, DWG, No., Equip. Tag No .. , Procedure No .. TAG, Software name and PROCEDURE, SQFlWARE) version) DWG 1-FP-09688 DWG F-95041 DWG F-94018 DWG D-03056 DWG 1-FP-55111 VTMA FP-81758 VTMA VTMA FP-9264 PROCEDURE OMST-RPS21SA PROCEDURE OENP-309 PROCEDURE OENP-310 PROCEDURE OSD-03 MGEN SD-03 MOES QDP93B FSAR DBD DEJD-03 TAG 1-C71-EPA1 TAG 1-C.71-EPA2 TAG 1-C71-EPA3 TAG 1-C71-EPA4 TAG 1-C71*EPA5 TAG 1-C71-EPA6 Function (i.e. IN for design inputs or references; OUT for affected documents)

IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN IN OUT OUT OUT ' OUT OUT OUT Calculation Number: 1C71-0016 Revision Number: 1 Attachment D Page 01 of 02 Relationship to Cale. Action (e.g. design Input, assumption (specify if Doc basis, reference, document affected Services or Config. by results) Mgt. to Add, Dele!ed or Retain) (e.g,. CM Add, PS Delete) REFERENCE DS RETAIN . REFERENCE DS RETAIN REFERENCE b$ RETAIN REFERENCE DS RETAIN REFERENCE DS DELETE REFERENCE OS RETAIN REFERENCE DSADD REFERENCE DSAOD REFERENCE DSADD REFERENCE DS DELETE REFERENCE OS DELETE REFERENCE DS DELETE REFERENCE DSADO REFERENCE 0$ADD REFERENCE DSADD REFERENCE DS RETAIN EDB CM ADD EDB CM ADD EDB CM ADD EDB CM ADD EDB CM ADD EDB CM ADD