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.
| 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
BSEP 17-0019 Enclosure 2 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 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 1C71. -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 CODE~4_ _ __
QUALITY CLASS__._A..;.___ __
NUCLEAR GENERATION GROUP 1C71-0016 (Calculation#)
Reactor Pr.otection System Power Monitor Overvoltage, Undervoltage, Underfrequency, and Time Delay Uncertainty and Setpoint C~lculation (FOR RPS 1-C71-EPA1(2,3,4,5;6))
(Title including structures, systems, components)
~BNP 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 08/2.1/96 I08/21/96 Date D1:1te 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
Calculation Number: 1C71-0016 Revision Number: 1 Page: i of iv LIST OF EFFEC-TIVE PAGES Page Rev. Page Rev. Page Rev. Page Rev.
i 1 16 1 35 1 54 1 ii 1 17 1 36 1 55 1 iii 1 18 1 37 1 56 1 iv 1 19 0 38 1 57 1 1 1 20 1 39 1 2 0 21 -- 1 40 1 3 1 22 1 41 1 4 1 23 1 42 1 5 1 24 1 43 1 ..
6 1 25 1 44 1 7 1 26' 0 45 1 8 1 27 1 46 1 9 1 28 1 47 1 Attachments 10* 1 29 1 48 1 No. ~e_vjsion 11 1 30 1 49 1 A 0 12 1 31 1 50 1 B 1 13 1 32 1 51 1 c 0 14 1 33 1 52 1 D 1 15 1 34 1 53 1
Cal9ulation Number: 1c71.:po1'6 Revision Number: 1 Page: ii <:>f iv REVISION
SUMMARY
Rev.
Oat~ Revision .Sutnmary :
0 Q8/22/9q' ORIGINAL ISSUE .
1 Revised c~lculation per AR 492852 and.EC ~1'018, A general revision was performed. Nul11erous miscellaneous cha*nge~ were incorporated to provide general enhancement/clarification anc:t to address administrative issues. Such changes include, but are not limited to:
[
.. Removal of the f:1µr:nidity Eff!9.cl in Qeten:niriing the in$t'rument µn¢erf:~inties. * *,
- Update of the* M~JE Lmcertainty .
- Ca.lculCillion of:the TQU using .a. combined analysis method
- _Revis.ed dver:voltage and Und~rvoJtage AVs a.nd *Setpoints
- for the RPS ~PAs.
- l_hcluE?io.n ofa Document lnde>_cing Taole~
1
Calculation Number: 1G71-0016 Revision Number: 1 Page: iii of iv TABLE OF CONTENTS Section Description 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
Calculation Number: 1C71-0016 Revision Number: 1 Page: iv of iv TABLE OF CONTENTS (CONT'D)
Section Description 7.0 Determination of Trip Setpoint ............................................................... ,........... 43 7.1 Process .Limits ................... '. ....................................................................... 43 7.2 Setpoint Determination ........................................................................... 44 7.3 Graphical Represent~tion 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
C~Iculation Numb~r: 1C71.;0.016
- Revision Number: 1 Page: 1 of,57 1.0 OBJECTIVE The objectiv~ ofthis cc;ilcula~ion is to determineJhe*AlloWable V;:ll1.:1e (AV) a.nci Setpoint (SP) for the Overvoltage~ Undervoltage, Underfrequency arid Time I~el;;iy tunoti9ns* of ~he g~ac.tor: Pro~13ction System:i (RPS) Electr:ic~ll Protection Assemblies* (EPAs) 1"'.c11.:EPA1(2, 3, 4, 5, *and 6)'under normal environmental conditions
- 2.P LOOP FUNCTJONAL DESCRIPTION
.2.1 Description The !=lectrical Protection Assl?mplies (EPAs) wer'e)nstall~~ i.n r~spon.se to a Nuclear.Regulatory. Commission (NRC),concern tt:iat:a fa!lure*of the existing*
uoqu~lifi~d pn;>tective circuits~fo.r tile Motor-Generator {M~G) sets coLJld res.ult in darjlage lo RPS .qamponents resulting in.a.potential .loss-of C(lpabflity fo scram the. plant. . Th~. l;PAs replac~ th.e protective function tti~t 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 an~ 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 prot~ctive 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 lo~ds 1cohnected to the RPS pciwet bus~s by disconnecting the loads from the power sources when th~. voltage at the Class 1E 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 pqw~r 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 Non-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 .~ ~DRll~L POWER &UPP.I. Y flEE.D
'f-C71..s-001ACB) 1-Ct1-EPA1(3)
- 1*C71-EPA2(4~
H lgh lr;ert!D Motor* Gonoral Et&ctric Modril Gonoral Eloatm MO<lol Gonorator (M-G) Set 9t4E175 Elccirlo&I 914E175 Ele~I 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.
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 Elactr~1 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.
'Calculation Number: 1C71-0016 Revision Number: 1 Page: 3 of 57 Instrument Tag No. Manufacturer Model Location 1-C71-EPA1 - General Electric 914E175 Control Building 23' El.
1-C71-EPA2 General Electric 914E175 Control Building 23' El.
1-C71-EPA3 General Electric 914E175 Control Building 23' El.
1-C71-EPA4 General Electric 914E175 Control Building 23' El.
1-C71-EPA5 General Electric 914E175 Control Building 23' El.
1-C71-EPA6 General Electric* 914E175. Control Building 23' El.
3.0 REFERENCES
3.1 Drawings 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
Calculation Number: 1C71-0016 Revision Number: 1 Page: 4 of 57 3.2 Vendor Manuals 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 Elec~ric 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 Safe~y-Related Instrumentation (Information Only) 3.6.2. ISA Recommended Practice RP67.04, Part II, Approved December 2Q~ 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 Equipment Data Base System (EDBS)
Updated Final Safety Analysis Report (UFSAR), Amendment 13, Section 7.2, Reactor Protection System 3.7.3 Deleted 3.7.4 EWR-7351VR, 10/02/89, Vendor Recommendation SIL 496; EPA Performance 3.7.5 Plant Modification (PM) 81.-093, 9/18/85, RPS MG Set Protective Relays Seismic Upgrade 3.7.6 EWR-5071, EPA Calibration Methodology 3.7.7 Plant Modification (PM) 1-85-099, 10/15/85, EPA Relays Time Delay Setpoint Change 3.7.8 General Electric Design Specification for Reactor Protection System, Document No. 22A 1480, Revision 3 3.7.9 QDP 938, Rev. 0, .Qualification Data Package for Scram Solenoid Pilot Valve (SSPV) 3.7.10 Electrical Analysis for RPS System Vmtn and Vma.X Values (Attachment B, Rev. 1), EC 81018, Revision O.
Calculafiort. Number:. 1071-0016
/
Revision NUrnber: 1 Page: *a. of 57*
3;7.11 EC 61018,. Rev; 0, RPS EPAVolta~e Settings
'3.7 . ,12 0-FP-86202, Sh. 2, Rev. A, Scram Solenoid Pilot Valves CRD Hy:cirC1uli¢,contr.ol Unit
.. . I. . .... * . .
'3.7.13 DR 296*, Rev. 0, Wyle Laboratories TestReport.44400R96:.1 Revtsion ~ ,;N.~clear E11yiror:u1Jerital.*Qual_ificatio11 T,est Repc;>rt for A~tomatic Valve (AV) Scram Solenoid *PilotValves, Modef Number a1t2~-.14s"
- 4.0 INPUTS AND ASSUMPTIONS 4.1 The.DL for the RPS EPA Ov~rvoltag(;l Funptionfs 134 VA.C. This OL is ba,~ed qn the vendor specified .maxirru.intallowed operating :voltage forthe :scram *s.olehbid
- pilot 'la.Ive (SSPV) plus~the minimum* expected. voltage drop from the $.SPV to* the RPp !::PA~ Per the*Avcq d~~ign cJfi:tWi.ng (refe,r$nc~ 3..f.J2);.the h1C:!)(irr\urn a*perating voltage for th~ SSP\1 is .132*VAC. (1.20'+10%.VAG). Per:reference 3:7.10, the mihJmum ¢~petted volt~g~ dropfrorn~he RPS EPA.to th.~. ~9PVs 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 D~ for thi~ funption,.the qu(Jlmed .
lifeQft~e_§Sf'V is pas~d OIJ. 1g5VAG a(tti~SSPV:(Refe~~nce. ~.. 7.13): :12.5 VAC al the S~PV equC!tes to 127"-VAc at the ~J?S.EPA. Th~r~fo~e .th:~ "fe91] Spec Allowable Value (T$ AV) will]!>~* established,.at 127 VAG a,lthe RP~ EPA. anq ~he associated Nominal Trip Setpoint (NTSP) will be established conservative to the*
- T~ ;,XV by an amtjunt gr~a,ter J~an_ or equal to the t9tal !oop uric~rtainty CT.LU).
- Est~blistiiri'g tHe**iS AV c:1n'd NTSP aUh~se values. Will en~Lire, cbnsid.ering maximum expected insfrume*nf uncertainties, that the maxlmumvolta9e at-the S~PV dpes.11pte~~~eg the V.Qltage*:u~E:!9 ford¢termihing W~ ~spy*q~$1ifjed life:
Any changes to the TLU or Margin .mustensure that the N~SP* remains cohse!rvative, to thf: TS*AV by f!lri*a,qtount,grea,ter than or.e.q4al to the T~l,J. Any chan*ges to the TS AV require::te-evaluation of the equipment qualified .life per reference 3.7J~.
- 4.2. The DL for the RPS.EPA Undervdltage Function is 95 VAC. This DL is 'based on the minimum qualifiea voltag~ plus the m~x~l1lum expected voltage drop from the SSPV to the RPS*EPA. *Per reference.3.7.. 13, the . minimum qua!ifjed voltage for ti,e SSPV i$ 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: 1C71-0016 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 second~ 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 El~ctrical 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_
Pa~e: 9of57 5.0 DETERMINATION OF INSTRUMENT UNCERTAINTIES 5.1 Process Measurement Error 5.1.1 Pr6cess Measurement Effects (PME)
There ~re no pr_oce$~ effects asso_Ciated with the meai;urement of overvoltage, underVoltage, or underfrequency relative_ to-this instrument loop. As ~ res.ult, PM~ 'is consider.ed NIA. -
PME:= NIA_
5'.1.2 Pri!'llary E'~ment Accuracy (PEA)"
The electrical protection ~ssernbly is ~he ptim;;iry elern~nt:~nd sole instrum~nt of theJoop~ There are_ no primary element-accuracy uncertaihti~s as$pcialed with the* meas1,.ireh:lent :of overvol~age,.
undervoitage, or underfrequency*; therefore, *pEA, ls considered NIA.
PS\= NIA 5.2- Instrument Uncertainties_
5.2.t ~eneral'Electric 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 doe~ 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 un~ertqihty !s s - 1,00 VAC for the oyerve>lta*ge function.
Since a negative bias would cause the trip to occur below the trip ~etpoint, tfle rnost cqnservative approach f9r'the dvervoltage setpoint determination is to assume there is. nb negative bi~s an(! RA is e_qual to zero.
Calculation Number: 1C71-0016 Revision Number: 1 Page: 10 of 57 5.2.1.2 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 5.2.1.3 Temperature Effect (TE EPAl (Ref. 3.2.1 and Attachment A)
Reference 3.2.1 states the amount that the setpoint will change with r~spec_t 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 5.2.1.4 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.
Calculation Number: 1C71-0016 Revision Number: 1 Page: 11 of 57 5.2.1.5. 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 5.2.1.6 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 5.2.1.7 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 5.2.1.8 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
Calculation Number: 1C71-0016.
Revision Number: 1 Page: 12 of 57 5.2.1.9 Accident Radiation Effect {ARE EPAf Per Input 4.8 of this calculation, Accident Radiation Effect associated with an accident scenario is cons.iderec:I N/A.
ARE EPA= NIA 5.2.1.10 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 effE;!~t shall be considered N/A.
SE EPA= NIA 5.2.1.11 Readability (RE ePAl The Ele*ctrical Protection Assemblies do not have an inc:!icator whic~ 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 5.2.1.12 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.
Calculation Number: 1C71 ~0016 Revision Number: 1 Page: 13 of 57 5.2.1.13 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.
5.2.1.14 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 requir~ment 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 5.2.1.15 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 5.2.1.16 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
Calculation Number: 1 C71-0016 Revision Number: 1 Page: 14 of 57 5.2.1.17 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)
- 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
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 5.2.1.18 Bias (8 ePA}
No bias effects have been identified, therefore bias shall be considered NIA.
B EPA= NIA 5.2.1.1.9 As.,Found Tolerance (AFT EPAf AFT EPA =
= +/-'10.s 2 + 0.0 2 + o.9 2
+/-1.0 VAC 5.2.1.20 As-Left Tolerance (ALT ePAl ALT i;PA = Calibration Tolerance (per Reference 3.5.1)
+/-0.5 VAC 5.2.1.21 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 G'ener~I El~ctric Model 9148175;.ElectricaJ Protection Assetnbly-Undetvoltage Protection Function
- R~nge: 95. to 117 VAO (Reference 3.2.1) 5.2:2'.1 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 uncert~iilty is. !: + *1.. oo VA¢ fgr the underyolJage function.
Since a pt)sitive*bias would cau*se the .trip to occur above.the trip;s.e~pojnt, 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 I
5.2.2:2 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 largerv~ri~tiqni:;, i,n tepip~ratL,1r~.. For the pi.Jrpoi;¢s pf this calculation, this'uncertainty snail be considered temperature eff~_c1 di.Jl7 to th~ uncert~i11ty ar:nount_ not being tirne.
df;?pendent. In ac;fdition,_ per the_ information contained .in Atta~hment A, aoy unc(i!rtainty amounl'for drift is ir,mluded in the terilperaturE:feffed. Therefore, dfift is considered NIA.
DR EPA= NIA
Calculation Number: 1C71-0016 Revision Number: 1 Page: 17 of 57 5.2.2.3 Temperature Effect <TE EPAf (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 5.2.2.4 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 5.2.2.5. Overpressure Effect (OR.ePAf Overpressure effect is applicable only to those instruments whi.ch may experience. a higher pr0<;:ess pressure than the pre~sure 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
Galculati_on Number: 1 C71-0016 Revision Number: t Page: 18 of 57 5.2.2.6 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 5.2.2.7 Accident Temperature Effect CATE i:'pAf Per Input' 4.8 of this calculation, Accident Temperature Effect apso~iated with an accident scenario is considered N/A.
ATE EPA= NIA 5.2.2.8 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 5.i.2.9 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 5.2.2.10 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
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 5.2.2.11 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 5.2.2.12 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 stClte~ 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.
5.2.2.13 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.
Calculation Number: 1C71-0016 Revision Number: 1 Page: 20 of 57 5.2.2.14 Radiation Effect (RE EF>Al (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=
5.2.2.15 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 5.2.2.16 Calibration Tolerance (C~L 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,, C~lit~ration Tolerance shall be equal to :r 0.5 VAC.
CAL EPA= +/- 0.5 VAC
Calculation Number: 1C71-0016 Revision Number: 1 Page: 21 of 57 5.2.2.17 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 OkHz,. 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: 1C71-0016 Revision Number: 1 Page: 22 of 57 Therefore the total uncertainty associated with the Fluke45 DMM, combining the effects using SRSS, is as follows:
=+/-J(0.79)2 + (0.34)2
=+/-0.9 VAC 5.2.2.18 Bias (8 EPAf No bia$ effects have been identified, therefore bias shall be considered N/A.
B EPA= N/A
- I As,..Found Tolerance (AFT EPAf AFT EPA =
= +/-.J0;5 2 + 0.0 2 + 0.9 2
= +/-1.0 VAC 5.2.1.20 As-LeftTolerance (ALT EPAf.
ALT EPA =Calibration ToJerance (per Reference 3~5.1)
+/-0.5 VAC 5.2.1.21 Total Device Uncertainty {TDU epAf TDU EPA
= +/-J(0.5 + 0.9) 2 + (0.6)2 + 0
= +/-1.5 VAC
Calculation Number: 1C71-0016 Revision Number: 1 Page: 23 of 57 5.2.3 General Electric Model 914E175 Electrical Protection Assembly - Underfrequency Protection Function Range: 57 to 60 Hz fReference 3.2.1) 5.2.3.1 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 5.2.3.2 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
Calculation Number: 1C71-0016 Revision Number': 1 Page: 24 .of 57 52.3.3 Temperature Effect. <TE EPAl (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.
'5.2.3A Static Pressure. Effect <SPE ePAf Static' pressure effect is only 'applicable to differential pressure.devices in high static pressure process service.
Electrical Protection A~semblies c:ire elec,tronJc instrumem'ts.
which do not experience any pro~ss pressure. St~tic pressqre eff~ct 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*
riot'experienc~ C]ny dfrect coritact wit,h ptC>cess pressure ahd therefore will norexperierice an overpressure effect Overpres~ure effect is considered NIA for the p_urpos¢s :of this: calculation, OP EPA=N/A
Calculation Number: 1C71-0016 Revision Number: 1 Page: 25 of 57 5.2.3.6 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 5.2.3.7 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 5.2.3.8 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 5.2.3.9 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 5.2.3.10 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
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 5.2.3.11 Readability (RE EPAf The Electrical. Protection Assemblies do not have an indicator whi.ch is considered in this uncert~inty 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 5.2.3.12 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.
/
5.2.3.13 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.
Calculation Number: 1C71-0016 Revision Number: 1 Page: 27 of 57 5.2.3.14 Radiation Effec~ (RE FPAf (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 Reference 3.1.5) for the Con~rol 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 5.2.3.15 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 5.2.3.16 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.
Calculation Number: 1C71~0016 Revision Number: 1 Page: 28 of 57 5.2.3.17 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 OMST-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 affect~:
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
Calqulation Number: 1CT1-0016 Revision Number: 1 Page: 29 of 57
- 2) Random Uneertainty 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:( ) at trigger point 5
In solving fort.he Trigger Error let:
Slew Rate= 2TrfV = 2rr
- 6QHz
- 120V * ,/2 = 6.4
- 104 V/s
=
en 2* OV(ne:gilihle) eamp = 250ti.V 2
And solving for the Trigger Error;
, . _ 1.4
- Jczso *1D'"'" 6 ) 2 + o_ . _9 Tngge1: Error - . '* - 5..47*10 s 6 4 104 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 OMST~RPS21 SA.
Therefore the total uncertainty associated with the Fluke PM66a5, combining the effects using SRSS, is as. fqllows:
= +/-.J(0.0009)2 + (0)2
= +/-0.0009 Hz 5.2.3.18 Bias <BEPAl No bias effects have* been identified, therefore bias. shall be considered N/A.
8 EPA= N/A 5.2.3.19 As*Found Tolerance (AFT EPAl AFT EPA. =
= +/-~0.1 + 0.0 2 + 0.00092
= +/-0.1,Hz 5.2.3.20 As-Left Tolerance (ALT ePAl ALT EPA*= Calibration Tolerance (per Reference 3.5.1)
- +/-0.1 Hz
Ca lcu latio_n Number: 1C? 1-0016 Revision Number: 1 Page: 31 of 57 5.2.3.21 Total Device Uncertainty <TDU EP~
= +/-J(d.1 + 0.0) 2 + (0.2) 2 + 0
- +/-0.2 Hz 5~2.4 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 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 5.2.4.2 Drift <DR EPAf (References 3.2.1 and ~.5.1)
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:
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 5.2.4.3 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 5.2.4.4 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 5.2.4.5 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
Calculation Number: 1C71-0016 Revision Number: 1 Page: 33 of 57 5.2.4.6 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 5.2.4.7 Accident Temperature Effect (ATE EPAl Per Input 4.8 of this calculation, Accident Temperature Effect associated with ah accident scenario is~ considered N/A.
ATE EPA= N/A 5.2.4.8 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 5.2.4.9 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 5.2.4.10 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
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 5.2.4.11 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 5.2.4.12 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 oth~r 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.
5;2.4.13 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.
5.2.4,14 Radiation .Effect .(RE EPtil (Reference 3.2.1)
The Electrical Protection Assemblies are located in panels within the Cable Sp~ead 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
Calculation Number: 1C71-0016 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 5.2.4.15 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 5.2.4.16 Calibration Tolerance (CAL ePAf (Reference 3.3.1)
The Calibration Tol~rance 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.
5.2.4.17 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 OMST-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 Accuracy~ (0.15 *Si+ 25 ppm* IReading 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 A~curacy:
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 O~cilloscope)
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.
Calculation Numl:;>er: 1C71-0016 Revision Number: 1 Page: 37 of 57 Theref<;>re, MTEEPA ~ =+/-.J(0.0011) 2 + (0.05)2 MTEEPA = +/-0.1 seconds 5.2.4.18 Bias (8 EPA1 No bias effects have been identified, therefore bias s.hall be considered NIA.
18 EPA= NIA 5.2.4.19 As-Found Tolerance (AFT EPAf AFT EPA = J
+/-ALTEPA2 + DREPA
. 2
+ MTEEPA 2
= +/-v'o.2 2 + 0.0 2 + 0.1 2
= +/-0.2 seconds 5.2.4.20 As-Left Tolerance (ALT EPA),
ALT EPA= Calibration Tolerance (per Reference 3.5.1)
= +/- 0.2 seconds 5.2.4.21 Total Device Uncertainty (TDU ePAl
= +/-.J(0.2 + 0.1) 2 + (0.0) 2 + (0.2)2
= +/- 0.4 seconds
Calculation Number: 1C71-0016 Revision Number: 1 Page: 38 of 57 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
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= +/-JAFT5 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 (LALT) 6.1.3.1 LALT - 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=--;
+/-~liLI 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 procedur~ is acceptable.
Calculati.on Number: 1C71*0016 Revision Number: 1 Page: 41 of 57 6 ..1.3.4. 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.
Calculation Number: 1. C71-0016 Revision Number: 1 Page: 42 of 57 6.2 Loop Uncertainties 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
Calculation Number: 1C71-0016 Revision Number: 1 Pag~:: 43 of 57 7.0 OETERMINATION OF IRIP SETPC>iNT 7.1 Process Limits 7.1.1 Analytical/Design Limit The DL for the RP$ EPA functions is defined in S$ction 4.0.
7 .1.2 Operational Limit Th_e Operational Limit fqr RPS EPA Qvervoft~ge ~nd Undervoltage functions is 117 VAG Which is the nomJ.nal setting fpr the RPS MG *set voltc;ige regulator.
The op*erational Limit for RPS EPA Underfrequency functfon60 Hz Which istt)e n0.minal frequency of the RPS: MG S!3t.
The Operational Limit for RPS EPATirne* Delay is :0.2 seconds Which is the lqw end of the adjustable range of the time,
)
Calculation Number: 1C71-0016 Revision Number: 1 Page: 44 of 57 7.2 Setpoint Determination 7.2.1 RPS Power Monitor- Overvoltage Relay (Normal Power Supply Feed)
(1-C71-EPA1, 2, 3, and 4)
Parameter Vaiue Eouatfon Notes ..
Desion Limit (DL) 134.0 VAC* NIA Ref. 4, 1 Ma rain 7.5VAC* M = DL - SP - TLU Other Uncertainties 0.5VAC =
OU TLU - LAFT Loop As~Found 1.0VAC LAFT = SRSS (device AFT's}
Tolerance Loop As-Left 0.5VAC LALT = SR$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
Calculation Number: 1071-0016 Revisio.n Number: 1 Paget 45 of 57 7.2.2 RPS Power,Mo11it,o.r,. Oyerv*oltageH~lay '(Altern.ate P.ow~r Supply Feed)
{1-C71-EPA5' and 6) . . . .
/
Para mete~ 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 As~Found I 1..o V.AC LAPT =SR~.s ,(deviee AFTis)
Tolerance Loop As-Left 0:5VAC. LALT = SRSS (device ALT's):
Tolerance Allowabl.e Value (AV) ~127.0 VAC*
Setpoint 125.0VAC SP :: DL.- TlU. - M Reset Vallie N/A*** NIA OperationaL Limit. 117 VAC NIA . Ret.7.t.2.
~see Section 4, 1 f6rthe basis used to establish the DL~ TS*AV, SP and assodated margin.
~*!'The 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: 1C71-0016 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
- "* 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 LALT =SR.SS (device ALT'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*
Calc;ulation Number: 1C71-:'0016 Revision Number: 1 Page: 4a-of57 1.2~5 HPS Power Monitor- Underlrequency Relay (Normal and Alternate Power Supply Feed) (1-C71-EPA1, 2, 3, 4, 5, and 6)
Parameter Valu~ Equation* Notes Design Limit COL} 57 ..0.Hz NIA Ref. 4.3 Marg.in 0.5 Hz' M ..,: SP*~ DL- TLU
.Other L,lnc;ertainties .. 0.1 Hz OU= TLU- LAFT
.. , ., ~' *~ .. .. . , ...
Loop As-Found .0.1 Hz LAFT =-SRSS (device Tolerance .AFJ~s) '
Loop As-Left n.1 Hz LAL T = !SRSS {device .
Tolerance Al,.T's>' ..
.Allowap!e Value (AVj ~57:4 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, th~
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 ALT'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
Calculation Number: 1C71-0016 Revision Number: 1 Page: 50 of 57 7 .3 Graphical Representation of Setpoint 7.3.1 RPS Power Monitor - Overvoltage Relay (Normal Power Supply Feed).
134.0 VAC (DL) 127.0 VAC (AV) 126.0 (ULAFT) to VAC CULAFT) 7.5 (Margin) 125.5 (ULALT) 0.5 VAC CULALTl 125.0 VAC (SP) 0.5 VAC (LLALT) 124.5 VAC (LLALT) 1.0 VAC CLLAFTI 124.0 VAC (LLAFT)
I Voltage 117 VAG (OL)
Calculation Number: 1C71-0016 Revision Number: 1 Page: 51 of 57 7.3.2 RPS Power Monitor- Overvoltage Relay (Alternate Power Supply Feed) 134.0 VAC (DL)
\
127.0 VAC (AV) 126.0 (ULAFT) 1.0 VAC (ULAFTl 7,5 (Margin) 125.5 (ULALT) 0.9 VAC (ULALTl 125.0 VAC (SP) 0.5 VAC (LLALT) 124.5 VAC (LLALT) 1.0 VAC (LLAFTI 124.0 VAC (LLAFT)
I Voltage t 117 VAC (OL)
Calculation Number: 1C71-0016 Revision Number: 1 Page: 52 of 57 7.3.3 RPS Power Monitor - Undervoltage Relay (Normal Power Supply Feed) 117VAC (OL) 110.0 (ULAFT) 1.0 VAC CULAFTl 12.5 {Margin) 109.5 (ULALT) 0.5 VAC (ULALTl
+--- 109.0 VAC. (SP)
- 0. 5 VAC (LLALTJ 10B.5VAC (LLALT) 1.0 VAC (LLAFT) 108.0 VAC {llAFT).
107.0 VAC (AV)
I Voltage 95.0 VAC (DL)
Calculation Number: 1C71-0016 Revision Number: 1 Page: 53 of 57 7.3.4 RPS Power Monitor - Undervoltage Relay (Alternate Power Supply Feed) 117 VAC (dL) 110.0 (U~FT) 1.0 VAC (ULAFTl 12.5 (Margin) 109.5 (ULALT) 0.5 VAC fULALn 10~.0 VAC (SP) 0.5 VAC (LLALT) 108.5 VAC (LLALD 1.0 VAC (LLAFT) 108.0 VAC (LLAFT) 107.0 VAC (AV) 95.0 VAC (DL)
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) 0.5 (Margin) 57.BO Hz (ULALT & ULAFT) 0.1 Hz CULALT & ULAFT) 57 . 7 Hz (~P)
- 0. 1 Hz (LLALT & LLAFT) 57.6 Hz (LLALT & LLAFT) 57:3 Hz (A$P) 57:2 Hz (AV)
I Frequency 5.7 Hz(DL)
I
Calculation Number: 1C71-0016 Revision Number: 1 Page: 55 of 57 a.o orscussroN o*F RESULrs 8.1 Summary of Results 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
_)
Calculation Number: 1C71-0016 Revision Number: 1 Page: 56 of 57 As-Left Tolerance (ALT) = 0.5 VAC
=
As-Found Tolerance (AFT) 1.0 VAC 8.1.5 Summary of Results -RPS Power Monitor - Underfreguency
' Design Limit = 57 Hz Allowable Value= ~57.20 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 of~ 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: 1C71-0016 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 revised~
Calculation Number: 1C71-0016 Revision Number: 0 Attachment A Page A1 of A2 TELECON RECORD Date I Ti.me: August 7, 1996 / 1800
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.
Calculation Number: 1C71-0016 Revision Number: 0 Attachment A Page A2 of A2 TELECON RECORD Date I Time: August 20, 199611415 Contact Person: Barry Simon, Ge.neral Electric Co.
Phone: 408-925-2727 Initiator: Bruce Crabbs, EXCEL Services Corp.
Phone: 910-457-3182 Fax: 910-457-3014
Subject:
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: Any drift associated with the EPA is included in the Temperature Effect.
- 2) Temperature Effect: The temperature effect is listed as drift in the subject vendor manual.
- 3) Power Supply Effect: N/A.
- 4) Seismic Effect: There* is rto quantitath1e amount for seismic effect.
- 5) Radiation 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.
- 6) RFllEMI Effect: The new logic cards corrects any previous effects and therefore RFl/EMI effect is NIA
Calculation Number: 1C71-0016 Revision Number: 1 Attachment 8 Page 81 of B5 Re-cord of Doolgn Verification Ftm11 OENP..:109-01 {12194} ,
Rovlek>n_ _.o..___
Design Verification:
~ sl!]OO!llre bek1N of the (Lead) Designer Verlfler Is doCUITSfltation Ulat a design vert~tilil has been pefi01med ror ~e above llsted design doei.Jrntlflt anrl MN errors or dofldenclea !hot were Found have been c::ormc1ed.
Tho ~ign 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 For~ Design Of Nuclt!ar
-Powor Pfan_ts.
The MOthod{G) ofverfficatlon used Is designated beJow CHECK ALL THAT APPLY.
_ Qunllftcation Testing "1~!/ /9(.;
Olitti r..------"""----------~--
WA t NIA Design VetifiM / Di!i.cipline (print) Design Verifier (Signature) Dato NIA I Design Verifier t Dmdpllne (prln!) O~n VC<lfier (Slgrimure) Dale NIA f Design Verlfler I Dlsdplllle (print) Design Verifier (SjgnBture) Drlte IOENP-3-09 .I Rev, o 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 th~ 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 r~sponse 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.
IOENP-309 Rev. o Page 18 of rn I
C~lculatic111. NLJmber: 1071 .. 0016 Revision* Number: 1 Att~ctunerit 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 C!.ccor~l:Jnce wJ~h E(3R.._NGGG-(}b03.,
'[81 Desigr:dlerificationReview D Engineering Review 0 Owner's. Review
~ Design RevieW D Alternate Calculation D qµptific,atior.i Testi(IQ D ~p~ci~l...El'l~in~ering R~vi_ew_-'"------............-----.----...--_,.,..--_,,,_..,....-
CJ YES 0 NIA .Other R~cqrds are attacfl~d.
Russ.; Cusick. l&C 1217/2011.
(prinVsign) DJscipline .Date
'Item ResqfuJion
- i\Ja.
EPA provides under frequency protecti6ri incorporated.
o.nly, remr;ive*reference tp +/., 5% of 60 Hz.
EGR~NGGC"!QQ17 is referended twfoe lncorpor~ted.
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
\
Calculation Number: 1C71-0016 Revision Number: 1 Attachment B p age 84 af 85 3 0 Lower design limit references the 0 Per Reference 3.4.1 Section 3.2.2.5 95 95 VAC value that is only VAC for at most 4 seconds is the acceptable for 4 seconds. Is this minimum acceptable voltage appropriate Design Limit? excursion. Page 4 of ESR 95-00378 explains how 95 VAC at 4 seconds was concluded. Also the Time Delay
- Upper design limit references 138 Function of the RPS Power Monitor VAC, the SSPVs are only qualified to 120 +/1 10%. ls this appropriate ensures such an excursion to 95 VAC design Limit? 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 undes;ir~d 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).
4 5.2.1.3, 5.2.2.3, Temperature effect does Incorporated.
not consider lower temperature (75 - 40 =
35).
5 0 5.2.1.17, 5.2.2.17, 5.2.3.17,
- These values are the bounding yalues 5.2.4.17, why is 138/120/60/5 used for each measurement taken and are vs setpoint of 127/107/5711 that conservative in determining the EPA's would be measured during MTE uncertainty. Per resolution of calibration? Comment 3, Bullet 1 134 VAC is used
- Cal standard uncertainty is not in Section 5.2.1.17 included in M& TE uncertainty
- Cal standard is not required per EGR-NGGC-0153 and will not be included.
Calculation Number: 1C71-0016 Revision Number: 1 Attachment B Page 85 of 85 6 5.2.1.21, 5.2.2.21, 5.2.3.21, 5.2.4.21, per For conservatism, CAL and MTE will be EGR-NGGC-0153, CAL and MTE should summed. TDU in each affected section be summed algebraically before applying corrected_ /
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.
7
- 5.2.3. 17, Time base uncertainty
- Incorporated.
information provided is for the
- Incorporated.
PM6685, the PM6681 has different
- A major source of systematic error is values. the timebase. Clarified the uTimebase
- The aging rate should be based on Uncertaintyn to be the "Systematic the calibra~ion frequency, which Uncertainty" and the timebase is a part should be discussed here. of this uncertainty.
- Systematic/Bias error is not addressed, 8 5.2.4.2, ISA RP67.04.02 suggests drift is Incorporated.
not linear so only whole intervals should be used (two 18 mo intervals added SSRS) 9
- 5.2.4.17, current rev of OMST-
- Per discussion with those in the M& TE RPS21SA uses a TEK 5A48 scope. lab TEK 524A is typically used during
=
- Sample interval 500 us 2000 sis OMST-RPS21SA. Additionally, during rate, is this the digitizing rate for the t.he MST pe~ormed 10/14/09 the TEK 1 s/div time base setting? Should 524A was used.
state this in the calc.
- Corrected. Digitizing Rate taken as
- Typo in equation - extra 5 after 2.5 250 Ms/s due to 2 Channels.
- Readability I would think should be Therefore, Sample Interval will be 1us*.
based on ability to accurately place And the Time/Div will be taken as the cursors, the scope will have a 500us (Factory Initialization Settings) digital readout of the time. 0.25s
- Corrected.
error is pretty huge.
- Corrected.
10 Humidity effect is deleted from the calc. In FP-81758 the Vendor provides doesn't FP-81758 states the EPA operating provide any error value for a humidity requirement is 10% to 95% humidity. The uncertainty. Since the 10-95% humidity range cable spread room can be 10% ta 100%. is an operational requirement, with no The uncertainty analysis should address uncertainty provided, humidity is a limiting this condition. factor to the EPAs being operable. For the EPAs humidity is an operational concern, rather than an instrument uncertainty.
FORM EGR-NGGC-0003-2-10 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.
Calculation Number: 1C71-0016 Revision Number: o Attachment C Page C1 of c2 Record of Ownor'a Review Form OENP-300.-02 (12194 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 ~ft 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* Rovlo~ zw noo-'l.\NVV:
~ ......
Printed name Oise Sign~t.ure Date Prfnl£id nama Disc Slgnolul't'! Dll!EI Printed name Oise Sign.citure Dale Aj>provmd by:
J. d. µ_.cp.11100~,.,; v~.P~ \ .9/,tot./.14 Rwponslblo Manager /Sii11m1m Daw Printed Name I IOENP-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
~No. 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 b~ 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. Therefor~. the DL should be. 95V -tVol~qe 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.
Incorporate~:[
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 th~ AV js conservative,, or re.move .$$1. Del~ted SS!.
6 LALT - LALTs/b equal to CAL. Also, indicate that the current cal tolerance is acceotable. lncorooxated.
IOENP-30~ R~v.O
Calculation Number: 1C71-0016 Revision Number: 1 Attachment D Page 01of02 ATTACHMENT D Document Indexing Table
Calculation Number: 1C71-0016 Revision Number: 1 Attachment D Page 01 of 02 Document ID Number Function Relationship to Cale. Action Type (e.g., Cale No., Dwg. (i.e. IN for design (e.g. design Input, assumption (specify if Doc No., Equip. Tag No.., inputs or references; basis, reference, document affected (e g. CALC, DWG, Services or Config.
Procedure No .. OUT for affected by results)
TAG, Mgt. to Add, Dele!ed Software name and documents)
PROCEDURE, or Retain) (e.g,. CM version)
SQFlWARE) Add, PS Delete)
DWG 1-FP-09688 IN REFERENCE DS RETAIN .
DWG F-95041 IN REFERENCE DS RETAIN DWG F-94018 IN REFERENCE b$ RETAIN DWG D-03056 IN REFERENCE DS RETAIN DWG 1-FP-55111 IN REFERENCE DS DELETE VTMA FP-81758 IN REFERENCE OS RETAIN VTMA FP~B4116. IN REFERENCE DSADD VTMA FP-9264 IN REFERENCE DSAOD PROCEDURE OMST-RPS21SA IN REFERENCE DSADD PROCEDURE OENP-309 IN REFERENCE DS DELETE PROCEDURE OENP-310 IN REFERENCE OS DELETE PROCEDURE OSD-03 IN REFERENCE DS DELETE MGEN SD-03 IN REFERENCE DSADO MOES QDP93B IN REFERENCE 0$ADD FSAR IN REFERENCE DSADD DBD DEJD-03 IN REFERENCE DS RETAIN TAG 1-C71-EPA1 OUT EDB CM ADD TAG 1-C.71-EPA2 OUT EDB CM ADD TAG 1-C71-EPA3 OUT ' EDB CM ADD TAG 1-C71-EPA4 OUT EDB CM ADD TAG 1-C71*EPA5 OUT EDB CM ADD TAG 1-C71-EPA6 OUT EDB CM ADD