ML12125A310

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Calculation G13.18.6.2-ENS*004, Revision 1, Loop Uncertainty Determination for Div Iii Loss of Voltage Relays - GE Model Ngv Undervoltage Relay
ML12125A310
Person / Time
Site: River Bend Entergy icon.png
Issue date: 05/02/2012
From:
Entergy Operations
To:
Office of Nuclear Reactor Regulation
References
RBG-47236 G13.18.6.2-ENS*004, Rev 1
Download: ML12125A310 (29)
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El ANO-1 ED ANO-2 [I GGNS EL IP-2 El IP-3 [: PLP El JAF E] PNPS 0 RBS El VY LIW3 EL NP-GGNS-3 LI NP-RBS-3 CALCULATION (1) EC # 27437 (2)Page I of 22 COVER PAGE (3) Design Basis Calc. Z YES D NO (4) E CALCULATION Fl EC Markup Calculation No: G13.18.6.2-ENS*004 Revision:

1 Title: Loop Uncertainty Determination for DIV IIl Loss of Voltage Relays -_TFEditorial GE Model NGV Undervoltage Relay ED YES Z NO (' System(s):

302 ý10) Review Org (Department):

NSBE3 (l&C Design)(11) Safety Class: (12) Component/Equipment/Structure Type/Number:

Z Safety / Quality Related e/Number: E22-S004-27N I E22-S004-27N2 El Augmented Quality Program[] Non-Safety Related (13) Document Type: F43.02 (14) Keywords (Description/Topical Codes): uncertainty, calculation REVIEWS (15) Name/Signature/Date (16) Name/Signature/Date (17) Name/Signature/Date Chuck Mohr Justin Waters Paul Matzke (see EC 11753 for signature) (see EC 11753 for signature) (see EC 11753 for signature)

Responsible Engineer !Z Design Verifier Supervisor/Approval F- Reviewer N_ Comments Attached Z Comments Attached EN-DC-126 REV 4 SETPOINT CALCULATION ENGINEERING DEPARTMENT RIVER BEND STATION CALC. NO. -REV. ADDENDUM G13.18.6.2-ENS*004 Rev. 1 PAGE 2 OF 22 EENTERGY CALCULATION REFERENCE CALCULATION NO: G. 13.18.6.2-ENS*004 ,SHEET REVISION:

I I. EC Markups Incorporated (N/A to NP calculations)

None II. Relationships:

Sht Rev Input Output Impact Tracking Doc Doc Y/N No.1. EN-DC-126

-- 002 21 E N 2. EN-IC-S-007-R

-- 000 R1 E N 3. 7224.300-000-001B

-- 300 R0 E N 4. 201.130-186

-- 000 01 El N 5.215.150

-- 006 21 0 N 6. G080-1344

-- 000 R1 0 N 7. 6221.418-000-001A

-- 300 0 El N 8. F137-0100

-- 000 0 El N 9. 0221.418-000-008

-- 300 01 0 N 10. EE-001M -- 009 10 E N 11. GE-828E537AA 003 028 01 E N 12. GE-828E537AA 007 030 01 E N 13. GE-828E537AA 008 028 01 E N 14. GE-828E537AA 011 029 0 El N 15. STP-302-1604

-- 018 01 E N 16. GE-152D8167 005 004 0 El N 17. G13.18.6.3-012

-- 000 0 El N 18. EDP-AN-02

-- 300 0 El N 19. G13.18.3.1*002

-- 004 El 0 Y EC11753 20. GE-152D8167 003 006 1 El N 21. GE-152D8167 003A 006 0 El N 22. GE-152D8167 004 007 0 El N 23. BE-230D -- 010 0 El N 24. 0221.418-000-049

-- 300 0 El N SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. 1 PAGE 3 OF 22 EN G RIVER BEND STATION ENTERGY _________1II. CROSS

REFERENCES:

1. Indus Asset Suite Equipment Data Base (EDB)2. Technical Specifications section B3.3.8.1 3. ANSI Standards C57.13 (1993), C37.90 (1989)4. Multi-Amp Instruction Book EPOCH-10 5. USAR Figures 3.11-1 through 5 IV. SOFTWARE USED: N/A Title: Version/Release:

Disk/CD No.V. DISK/CDS INCLUDED:

N/A Title: Version/Release Disk/CD No.VI. OTHER CHANGES: The following related references have been removed: 3221.418-000-003U, 0221.415-000-122, GE-828E537AA

  1. 006, GE-DL828E537AA, STP-302-0102 SETPOINT CALCULATION ENGINEERING DEPARTMENT RIVER BEND STATION CALC. NO. -REV. ADDENDUM G13.18.6.2-ENS*004 Rev. 1 PAGE 4 OF 22 ENTERGY Revision Record of Revision Initial issue to support determination of loss of voltage relay setpoints by" Electrical Engineering Incorporated new drift value and extended calibration period to 30 months per EC 11753.i SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM a ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. 1______ PAGE 5 OF 22 RIVER BEND STATION ENTERGY TABLE OF CONTENTS COVER SHEET CALCULATION REFERENCES RECORD OF REVISION SECTION PAGE 1.0 Purposeoand D escription

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

.6 2 .0 R esults/C onclusion

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

7 3 .0 R eferen ces .......................................................................................................................................

8 4 .0 D esign In p u t ..................................................................................................................................

10 5 .0 N om en clatu re ................................................................................................................................

13 6.0 C alculation M ethodology

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

14 7 .0 A ssum p tio n s ..................................................................................................................................

15 8 .0 C alcu latio n .....................................................................................................................................

17 9.0 Sim plified B lock D iagram ..........................................................................................................

222 Attachments:

I E-mail message from General Electric Power Management to George Boles ............

1 page 2 Design Verification Form and Comments ......................................................

6 pages SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. 1 Is____ PAGE 6 OF 22' RIVER BEND STATION ENTERGY _ I 1.0 Purpose and Description

1.1. Purpose

The purpose of this calculation is to determine the uncertainty associated with the existing Division III, Safety-Related, 4.16 kV Loss of Voltage relays E22-27N 1 and 27N2. Nominal trip Setpoints and Allowable values will be determined by the Electrical Engineering group in calculation G 13.18.3.1

  • 002 and documented on the applicable BE drawing.1.2. Loop Descriptions The DIV. III incoming Normal Supply power is monitored by two undervoltage relays (27N 1 and 27N2) whose outputs are arranged in a one-out-of-two logic configuration (Reference 3.10.3). The channels include electronic equipment (e.g., trip units) that compare measured input signals with pre-established setpoints.

When the setpoint is exceeded, the channel output relay actuates, opens the DIV III Normal Supply source breaker.The Division lII 4.16 kV emergency bus has its own independent Loss of Voltage instrumentation and associated trip logic. The DIV III emergency bus is monitored by undervoltage relays 27S 1 through 27S4) whose outputs are arranged in a one-out-of-two, twice logic configuration (Reference 3.10.3).1.3. Design Bases/Design Bases Event Per Bases B 3.3.8.1, Reference 3.7.3, "successful operation of the required safety functions of the Emergency Core Cooling Systems (ECCS) is dependent upon the availability of adequate power sources for energizing the various components such as pump motors, motor operated valves, and the associated control components.

The LOP instrumentation monitors the 4.16 kV emergency buses. Offsite power is the preferred source of power for the 4.16 kV emergency buses. If the monitors determine that insufficient power is available, the buses are disconnected from the offsite power sources and connected to the onsite diesel generator (DG) power sources." 1.4. Degree of Accuracy/Limits of Applicability The results of this calculation are based on the statistical methods of at least 95% probability of occurrence for a one sided probability of distribution in accordance with "General Electric Instrument Setpoint Methodology," (Reference 3.3) and EN-IC-S-007-R, "Instrument Loop Uncertainty

& Setpoint Calculations", (Reference 3.2).The results of this calculation are valid under the Assumptions stated in Section 7.0 of this calculation.

The appropriate use of this calculation to support design or station activities, other than those specified in Section 1.1 of this calculation, is the responsibility of the user.1.5. Applicability A data analysis has been performed in order to determine which, if any, redundant instrument loops are bounded by the results of this calculation.

This calculation is applicable to the Loops associated with the primary elements stated in Section 2.1. The results of this calculation are bounding for the applicable instrument loops, based on such factors as instrument manufacturer and model number, instrument location/environmental parameters, actual installation and use of the instrument in process measurements.

SETPOINT CALCULATION ENGINEERING DEPARTMENT RIVER BEND STATION CALC. NO. -REV. ADDENDUM G13.18.6.2-ENS*004 Rev. 1 PAGE 7 OF 22 ENTERGY 2.0 Results/Conclusion

2.1. Results

The Loop Uncertainty and Total Loop Uncertainty for the Loss of Voltage and Loss of Voltage relays were calculated in Section 8.0. These values and other associated values such as loop drift are presented in table 2.1-1.Table 2.1-1 Model NGV Loss of Voltage Relay -Voltage Trip System(s)

Loop Loop Channel Total Loop M&TE Loop Maximum Identification Uncertainty Drift Uncertainty Accuracy Loop (LU) (DL) (TLU) Requirements Setting Tol.(MTE[) (PALB)VAC VAC VAC VAC VAC E22-S004-27N 1 +3.678 5- 5.31 E22-S004-27N2

  • - 128.73 *- 185.85* Value adjusted to reflect uncertainty applied to the primary of the potential transformer.

2.2. Conclusions

The calculated Loop Uncertainty and Total Loop Uncertainty presented in table 2.1-1 are bounding for the relays and circuits listed in Section 2.1.

SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM a ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. 1_PAGE 8 OF 22-- -RIVER BEND STATION ENTERGY 3.0 References 3.1. EN-DC- 126, "Engineering Calculation Process" 3.2. EN-IC-S-007-R, "Instrument Loop Uncertainty

& Setpoint Calculations" 3.3. 7224.300-000-001B, NEDC-31336P-A, General Electric Instrument Setpoint Methodology

3.4. Indus

Asset Suite Equipment Data Base (EDB)3.5. 201.130-186, "Peak Spreading of ARS Curves for the Control Building" 3.6. Environmental Design Criteria, Spec 215.150, including USAR figures 3.11-1 through 5 as outlined in EDP-AN-02 section 6.3.1 3.7. RBS Operating License 3.7.1. Not used 3.7.2. Not used 3.7.3. Bases Sections B3.3.8.1 3.8. RBS USAR None 3.9. Vendor Manuals/Documents 3.9.1. G080-1344, General Electric Instructions Undervoltage Relays 3.9.2. F137-0100, Fluke 45 Dual Display Multimeter Users Manual 3.9.3. Multi-Amp Instructions for the EPOCH-10, Microprocessor-Enhanced Protective Relay Test Set, (maintained by the Standards Laboratory) 3.9.4. 6221.418-000-001A, High Pressure Core Spray System Power Supply Unit, NEDO-10905 3.9.5. 0221.418-000-008, Purchase Specification Data Sheet 21A9300AU, High Pressure Core Spray System 3.10. Electrical Schematics 3.10.1. EE-001M, 4160V One Line Diagram Standby Bus E22-S004 3.10.2. GE-828E537AA#003, Elementary Diagram HPCS Power Supply System 3.10.3. GE-828E537AA#007, Elementary Diagram HPCS Power Supply System 3.10.4. GE-828E537AA#008, Elementary Diagram HPCS Power Supply System SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. I ,,,,,, PAGE 9 OF 22 RIVER BEND STATION ENTERGY _3.10.5. GE-828E537AA#01 1, Elementary Diagram HPCS Power Supply System 3.11. Surveillance Test Procedures:

3.11.1. STP-302-1604, HPCS Loss of Voltage Channel Calibration And Logic System Functional Test 3.11.2. Not used 3.12. Logic Diagrams 3.12.1. GE-152D8167#003, Functional Control Diagram, High Pressure Core Spray Power Supply 3.12.2. GE-152D8167#003A, Functional Control Diagram, High Pressure Core Spray Power Supply 3.12.3. GE-152D8167#004, Functional Control Diagram, High Pressure Core Spray Power Supply 3.12.4. GE-152D8167#005, Functional Control Diagram, High Pressure Core Spray Power Supply 3.13. Standards 3.13.1. ANSI Standard C57.13, Requirements for Instrument Transformers 3.13.2. ANSI Standard C37.90, Relays and Relay Systems Associated with Electric Power Apparatus 3.14. E-mail message from General Electric Power Management to George Boles, Attachment 1 3.15. G13.18.6.3-012, Rev.0, General Electric Model NGV13B Relay Drift Analysis 3.16. BE-230D, 4.16kV Bus 1E22-S004 Relay Settings 3.17. 0221.418-000-049, 1 E22-S004 Equipment Summary SETPOINT CALCULATION ENGINEERING DEPARTMENT RIVER BEND STATION CALC. NO. -REV. ADDENDUM G13.18.6.2-ENS*004 Rev. 1 PAGE 10 OF 22 ENTERGY 4.0 Design Input 4.1. Loop Input 4.1.1. Loop Data: Form 1: Loop/Process Data Sheet Description Data Reference Loop Sensor(s)

E22-S004 PT-Line 3.10.4 Location E22-S004 3.10.4 Output Range 0- 120 VAC 3.10.4 Input Range 0 -4200 VAC 3.10.4 4.1.2. Special Considerations:

4.1.2.1. Calibration shall be performed using the following instruments:

-Multi-Amp EPOCH-10 relay tester set to Oscillator mode (Reference 3.9.3)-Fluke Model 45 Digital Multimeter set to medium resolution (Reference 3.9.2)4.1.2.2. A minimum of 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> warm up time at the location where the M&TE will be used shall be allowed for the Fluke Model 45 Multimeter.

4.2. Loop Instrumentation Form 2: Instrument Data Sheet Calc. Device Number 1 Description Data Reference Component Number(s)

E22-S004-PT-Bus

3.4 Manufacturer

GE 3.17 Model(s) JVM 3.17 Location(s)

CB. 116'EL/E22-S004

3.4 Service

Description Transformer

3.4 Instrument

Range 0 -4200 VAC 3.10.4 Instrument Span 120 VAC 3.10.4 Output Range 0 -120 VAC 3.10.4 Calibration Interval Evaluated N/A Note Device Setting Tolerance N/A Note Note: Potential transformers for instrument service cannot be calibrated or adjusted.Therefore there is no device setting tolerance or calibration interval.

SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. 1 S. ...PAGE 11 OF22 S--6--" RIVER BEND STATION ENTERGY Form 2: Instrument Data Sheet Calc. Device Number 2 Description Data Reference Component Number(s)

E22-S004-27N1 3.4 E22-S004-27N2 Manufacturer General Electric 3.16 Model 12NGV 3.16 Location(s)

CB. 116'EL/E22-S004

3.4 Service

Description Relay 3.4 Input Range 0 -120 VAC 3.9.1 Output Contact Action 3.10, 3.12 Calibration Interval Evaluated 30 Mo. 3.2 (24 Mo. + 25%)4.3. Loop Device Data Form 3: Instrument Accuracy Data Sheet Calc. Device Number 1 General Electric JVM Description Data Reference Reference Accuracy (RAT) 0.3% of setting 3.9.4, 8.2.1 2cy 7.1.2 Seismic Effects (SET) N/A 7.1.4 Temperature Effects (TET) N/A 7.1.12 Insulation Resistance Effects (IRT) N/A 7.1.10 Temperature Drift Effect (TDT) N/A 7.1.13 Drift (DRT) N/A 7.1.14 SETPOINT CALCULATION ENGINEERING DEPARTMENT RIVER BEND STATION CALC. NO. -REV. ADDENDUM G13.18.6.2-ENS*004 Rev. 1 PAGE 12 OF 22 ENTERGY Form 3: Instrument Accuracy Data Sheet Calc. Device Number 2 General Electric NGV Description Data Reference Reference Accuracy (RAR) -1% of setting 3.14, Attachment I 2o 7.1.2 Seismic Effects (SER) 0 7.1.4 Temperature Effects (TER) 2% of setting 7.1.12 (68-F -104°F)Insulation Resistance Effects (IRR) N/A 7.1.10 Temperature Drift Effect (TDR) N/A 7.1.13 Drift (DRR) +5.823 VAC 3.15 2o Power Supply Effect (PSR) N/A 7.1.6 Reset Differential 10% of Setting 3.9.1 2cr 3.11.1, 7.1.2 4.4. Environmental Information Form 4: Environmental Conditions Data Sheet Zone: CB-116-2 Description Data Reference Location Building/Elevation CB-116 3.4 Room/Area Switchgear Room 3.4 Normal Temperature Range, OF 40 -104 3.6, 7.1.12 Humidity Range, %RH 20-90 3.6,7.1.9 Radiation 40 Year Total Integrated Dose, 800 3.6 Rads Pressure Range Atmos 3.6 Accident (Loss of Offsite Power)Temperature Range, °F Same as Normal 3.6 Humidity Range, %RH Same as Normal 3.6 Radiation, Total Integrated Dose, Rads Same as Normal 3.6 Pressure Range Same as Normal 3.6 Seismic Accelerations, g < 3 3.5 SETPOINT CALCULATION ENGINEERING DEPARTMENT RIVER BEND STATION CALC. NO. -REV. ADDENDUM G13.18.6.2-ENS*004 Rev. 1 PAGE 13 OF 22 ENTERGY 5.0 Nomenclature The terms and abbreviations that are not defined in this section are defined in Reference 3.3, Reference 3.2 or within the text of this calculation.

SETPOINT CALCULATION ENGINEERING DEPARTMENT RIVER BEND STATION CALC. NO. -REV. ADDENDUM G13.18.6.2-ENS*004 Rev. 1 PAGE 14 OF 22 ENTERGY 6.0 Calculation Methodology This calculation is prepared in accordance with the EN-IC-S-007-R, "Instrument Loop Uncertainty

& Setpoint Calculations" (Reference 3.2), EN-DC-126, "Engineering Calculation Process" (Reference 3.1) and 7224.300-000-001 B, "General Electric Instrument Setpoint Methodology" (Reference 3.3).

SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. 1 PAGE 15 OF 22-- -RIVER BEND STATION ENTERGY 7.0 Assumptions

7.1. Assumptions

that do not require confirmation

7.1.1. Miscellaneous

Allowance (ML)A miscellaneous allowance has not been applied to the uncertainty of the devices evaluated by this calculation.

By assuming all vendor supplied data is a 25 value and with intermediate rounding of values, sufficient conservatism has been introduced.

7.1.2. Vendor

2a Data For conservatism, all uncertainties given in vendor data specifications are assumed to be 2a unless otherwise specified.

7.1.3. Zero Effect Not applicable

7.1.4. Seismic

Effects (SE)Seismic effects are assumed to be negligible for the NGV relay, per Reference 3.9.5.Seismic effects are not applicable to potential transformers.

7.1.5. Radiation

Effects (RE) & Radiation Drift Effect (RD)Are not applicable to the relays and transformers evaluated by this calculation, as they are located in a mild environment (Reference 3.6).7.1.6. Power Supply Effects (PS)Power supply effects are not applicable to type NGV relays as the relay does not utilize a control power source separate from the sensed voltage.Power supply effects are not applicable to transformers.

7.1.7. Process

Measurement Uncertainty (PM)Not Applicable

7.1.8. Static

Pressure Effects (SP)Not Applicable

7.1.9. Humidity

Effects (HE)The relays were specified by the HPCS manufacturer and are assumed to be designed to with stand the environmental effects in the mounting location.

The HPCS Design Specification, Section 4.6.1 (reference 3.9.5) states that the design conditions for the switchgear and its sub-components are 20-90% Relative Humidity.

Per Reference 3.6, the humidity range for enviromnental zone CB-1 16-2 is 20 to 90% RH. Reference 3.6 also SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. 1 PAGE 16 OF 22 RIVER BEND STATION ENTERGY identifies that 1% of the calendar year (30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />) the humidity could be 5 % higher. This identifies that 1% of the calendar year (30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />) the humidity could be 5 % higher. This is considered negligible.Therefore, it is assumed that Humidity Effects are negligible.

7.1.10. Insulation Resistance Effects (IR)(IR) effects, which may result in degradation of circuit insulation, are not applicable to the devices and circuits addressed by this calculation.

7.1.11. Voltage Drop Voltage drop due to long wiring lengths between source and load are assumed to be negligible as the potential transformers and the under-voltage relays evaluated by this calculation are located in the same switch gear compartment.

7.1.12. Temperature Effects (TE)There is no temperature effect data available from the manufacturer for the Type NGV relay. Therefore for conservatism, temperature effects are assumed to be equal to the repeatability value (+/- 2% of setting) given in Attachment

1. Reference 3.6 also identifies that 1% of the calendar year (30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />) the temperature could be 5°F higher. This is considered negligible.

Temperature effects are not applicable to transformers.

Temperatures above the rated value would tend to produce total failure of the transformer, rather than an error in output.7.1.13. Temperature Drift Effects (TD)The drift analysis performed in Reference 3.15 is assumed to encompass all components of drift and drift effects except for temperature drift effects which are assumed to be included in the Reference Accuracy of the device.Temperature drift effects are not applicable to transformers.

7.1.14. Instrument Drift The drift analysis can be found in Reference 3.15.Drift is not applicable to transformers.

7,2. Assumptions that require confirmation None SETPOINT CALCULATION ENGINEERING DEPARTMENT RIVER BEND STATION CALC. NO. -REV. ADDENDUM G13.18.6.2-ENS*004 Rev. 1 PAGE 17 OF 22 8.0 Calculation This section includes the following subsections used in performance of this calculation:

8.1) Calculation of Miscellaneous Uncertainties 8.2) Calculation of Individual Device Reference Accuracy (RA) and Determination of Appropriate Device Uncertainty 8.3) Calculation of Individual Device Uncertainties 8.4) Calculation of Loop Calibration Accuracy (CL)8.5) Calculation of Insulation Resistance Effects (IR)8.6) Calculation of Loop Uncertainty (LU)8.7) Calculation of the Loop Drift (DL)8.8) Calculation of Total Loop Uncertainty (TLU)8.9) Calculation of Reset Differential (RD)8.1. Calculation of Miscellaneous Uncertainties

8.1.1. Calculation

of Transformer Burden and Determination of Reference Accuracy Per Reference 3.9.4, page 5-10, section 5.3, the Type JVM potential transformer has a 1.2% ratio error for a combined relaying and metering burden of greater than 75 VA.However, a burden below 75VA yields a transformer accuracy of+/- 0.3% of setting. As shown below, the devices fed by the PT Line transformer do not meet the 75 VA burden threshold.

2 Model NGV Undervoltage Relays @ 4.2 .VA each = 8.4 2 Model 27N Undervoltage Relays @ 0.5 VA each = 1.0 I Synchronizing Relay @ 2.0 VA = 2.0 2 Volt Meter, GE AB40 @ 0.32 VA each = 0.64 1 Synchronizing Scope @ 5.2 VA 5.2 Control Relays/Meters not listed, Assumed Value = 10.0 25.24 VA Therefore, PT Reference Accuracy shall be 0.3% of setting (87 VAC per Ref. 3.11.1) or 0.261 VAC for this calculation.

8.1.2. Calculation

of Relay Temperature Effects (TER) (Assumption 7.1.12)TER 1% Setting-+0.01 x 87 VAC= +-0.87 VAC SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. 1*______, PAGE 18 OF 22 RIVER BEND STATION ENTERGY 8.2. Calculation of Individual Device Reference Accuracy (RA) & Determination of Appropriate Device Uncertainty

8.2.1. Transformer

Reference Accuracy (RAT)RAT= +/- 0.3% -of Setting= +/- 0.003

  • 87 VAC= -0.261 VAC (2o Value)8.2.2. Undervoltage Relay Reference Accuracy for Voltage Setting (RAWR RAR = 1% of Setting 0+/-0.01
  • 87 VAC-+/- 0.87 VAC (2a Value)8.2.3. Loop Reference Accuracy (RAI)(Reference 3.2)RAL = .[(RAT)2 + (RAR)2]1/2-+ [(0.26 1)2 * (0.87)2]1/2

-+ 0.908 VAC (2o Value)Per Reference 3.11.1 the Loop Calibration Tolerance (CTL -Procedural As Left Band)for Loss of Voltage is +/- 2.61 VAC. As the CTL value is greater than the associated Loop Reference Accuracy, the individual device Reference Accuracies are set to zero for the remainder of this calculation (Reference 3.2).8.3. Calculation of Individual Device Uncertainties (Reference 3.2)8.3.1. Device Uncertainty Transformer (AT_ (Sections 4.3 and 8.2.1)AT -RAT)2]112

=+/- [(0)2]1/2-+ 0 VAC (2a Value)8.3.2. Device Uncertainty Relay Voltage Setting (AR)AR = [(RAR)2 + (PSR)2 + (TER)2]1/2= [(0)2 + (0)2 + (0.87)2]1/2

-+/- 0.87 VAC (2a Value)8.4. Calculation of Loop Calibration Accuracy (CL)Per reference 3.2 and 3.3 Loop Calibration uncertainty (CL) is defined as: CL = +/- [(MTEL)2 + (CTL)2]1/2=-4-[0.3752

+ 2.612]1/2 VAC+/-2.64 VAC (2a Value)

SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. 1 PAGE 19 OF 22 RIVER BEND STATION ENTERGY_________________

L _________________________________________

a 8.4.1. Measuring and Test Equipment Effects -Relay (MTEL)Measurement

& Test Equipment (MTEL) effects are defined from Reference 3.2 as: MTEL = + [(MTERAT)2 + (MTERIT)2 + (MTETET)2 + (MTEcsT)2]11 2 Where: MTERAT = Reference accuracy of the M&TE used for calibration.

Assumed equal to the Reference Accuracy of the primary element in the loop, 0.261 VAC (Reference 3.2).MTERIT = Readability of the M&TE used, assumed to be 0 as all M&TE used are digital with at least 2 digits of resolution. (Reference 3.2)MTETET = Effects of temperature changes on the M&TE between the calibration laboratory and the area where the M&TE is used, Assumed equal to the Reference accuracy of the primary element in the loop, 0.261 VAC (Reference 3.2).MTEcST = The accuracy of the calibration standard used to calibrate the M&TE, assumed equal to 1/4 the Reference accuracy of the primary element in the loop, 0.065 VAC (Reference 3.2).MTEL = +/- [(MTERAT)2 + (MTERIT)2 + (MTETET)2 + (MTECST)2]1/2= +/- [(0.26 1)2 + (0)2 + (0.261)2 + (0.065)2]1/2

= + 0.375 VAC (2c Value)8.4.2. Calculation of Calibration Effects (CT)Calibration Effects (CTL) are defined from Reference 3.2 as: CTL = Square Root Sum of the Squares (SRSS) of the calibration effects which are uncertainties due to "as Left" loop accuracy.CTL = + 2.61 VAC (20 value)8.5. Calculation of Insulation Resistance Effects (IR)0 per Assumption 7.1. 10 8.6. Calculation of Loop Uncertainty (LU)LU = +/- (m/n)[(AT) 2 + (AR)2 + (CL 2]/2 +/- M (margin)= + (1.645/2)[(0)2

+ (0.87)2 + (2.64)2] /2 -1.392=+/-3.678 VAC Adjusted to reflect primary voltage to the PT= +/- 3.678 x PT Ratio (Primary Voltage/Secondary Voltage)=+/-3.678 x 35 VAC=+ 128.73 VAC SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. I.,______ PAGE 20 OF 22 RIVER BEND STATION ENTERGY _8.7. Calculation of Loop Drift (DL)8.7.1. Transformer Temperature Drift Effects (TDT)0 for per Assumption 7.1.13 8.7.2. Relay Temperature Drift Effects (TDR)0 per assumption 7.1.13 8.7.3. Relay Drift (DRR).Assumption 7.1.14 DRR = + 5.823 VAC (2c Value)As the only component of loop drift is the relay drift determined in reference 3.15, Loop Drift (DRL) is equal to Relay Drift (DRR).DL = +/- 5.823 VAC (2a Value)8.8. Calculation of Total Loop Uncertainty (TLU) Calculation:

TLU = +/- (m/n)[(AT) 2 + (AR)2 + (CL)2 + (DRL)2]1/2= +/- (1.645/2)[(0)'

+ (0.87)2 + (2.64) + (5.823)2]l/2

=+/-5.31 VAC Adjusted to reflect primary voltage to the PT:-5.31 x PT Ratio (Primary Voltage/Secondary Voltage)=+/-5.31 x35VAC=+/- 185.85 VAC 8.9. Calculation of Reset Differential The reset differential is applied to the voltage setting and is specified to be +/- 10% of setting per References 3.9.1 and 3.11.1. This value will be used in the calculation.

RR = +/- 0.1

  • setting VAC= +/-0.1*87= +/- 8.70 VAC Adjusted to reflected primary (bus) voltage at the PT:= RR x PT Ratio (primary voltage/secondary voltage)+/-8.7x35VAC

= +/- 304.5 VAC Calculated uncertainties are applicable to reset.

SETPOINT CALCULATION ENGINEERING DEPARTMENT RIVER BEND STATION CALC. NO. -REV. ADDENDUM G13.18.6.2-ENS*004 Rev. 1 PAGE 21 OF 22 ENTERGY Summary of Calculation Data Transformer Undervoltage Relay Device 1 Device 2 Values W Ref Values a Ref Input Range 0-42kV -3.13 0-120 -3.13 Process Units VAC -3.13 VAC -3.13 Reference Accuracy (RA) 0.3% of Setting 2 8.2.1 1% of Setting 2 8.2.2 Temperature Effect (TE) N/A -7.1.12 +/- 0.87 2 7.1.12 Seismic Effects (SE) N/A -7.1.4 N/A -7.1.4 Radiation Effect (RE) N/A -7.1.5 N/A -7.1.5 Instrument Drift (DR) N/A -7.1.14 +5.823 2 3.15 Temperature Drift Effect (TD) N/A -7.1.13 N/A -7.1.13 Radiation Drift Effect (RD) N/A -7.1.5 N/A -7.1.5 Power Supply Effect (PS) N/A -7.1.6 N/A -7.1.6 Humidity Effects (HE) N/A -7.1.9 N/A -7.1.9 Static Pressure Effect (SP) N/A -7.1.8 N/A -7.1.8 Process Measurement Effect N/A -7.1.7 N/A -7.1.7 (PM)Insulation Resistance Effect (IR) N/A -7.1.10 N/A -7.1.10 Zero Effect (ZE) N/A -7.1.3 N/A -7.1.3 SETPOINT CALCULATION CALC. NO. -REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*004 Rev. 1 PAGE 22 OF 22 RIVER BEND STATION 9.0 Simplified Block Diagram'tiansformex Undefvolfag'e 4200AWC-, Gener.l Electric Tye MV., 4200/1 2OVAC GEModel NGV SETPOINT CALCULATION CALC. NO.- REV. ADDENDUM ENGINEERING DEPARTMENT G3.l8.6.2-ENS*--4 Rev. i--- RIVER BEND STATION ATTACHMENT NO.: 1 ENTERGY PAGE 1 OF 1 From: "EmailClerk (IndSys,IM)" <emailclerk@indsys.ge.com>

To: <georgeboles@dpengineering.com>

Subject:

Email out for Case C01-39202 Date: Thursday, April 19, 2001 7:14 AM Please use Reply to respond to this e-mail.Any changes made to the Original Message content will not be transferred.

Please do not modify the subject line or processing of this e-mail may be delayed.Case COI-39202 Subject NGV Dropout Range George, The dropout range for the NGV1I relay is "Once the voltage dropout level has been adjusted to a value within the range of Dropout Adjustment as in Table C of the Instruction Book then on any dropout operation, the voltage range from the beginning of the action to its completion is about one percent of rated voltage" g GE Power Management Technical Support General Electric Power Management Info.pm@lndsys.ge.com Phone: 800-547-8629(North America)+34-94-485-8854(Europe and Middle East)905-294-6222(International)

Fax: (905) 201-2098 ATTACHMENT

9.1 DESIGN

VERIFICATION COVER PAGE Sheet I of 1 DESIGN VERIFICATION COVER PAGE[: ANO-1 [] ANO-2 El IP-2 LI IP-3 I] JAF LI PLP[1 PNPS El VY LI GGNS .RBS M W3 LINP Document No. G13.18.6.2.ENS*004 Revision No. 1I Page 1 of 4 Title: Loop Uncertainty Determination for Div III Loss of Voltage Relays -GE Model NGV Undervoltage Relay Z Quality Related LI Augmented Quality Related DV Method: [ Design Review [ Alternate Calculation EL Qualification Testing VERIFICATION REQUIRED DISCIPLINE VERIFICATION COMPLETE AND COMMENTS RESOLVED (DV print, sign, and*_date)El Electrical LI. Mechanical z Instrument and Control Justin Waters E] Civil/Structural-I- Nuclear Originator:

Charles Mohr L/'t" A A, /t)I z. 'Print/Sign/Date After Comments Have Been Resolved EN-DC-134 REV 2 ATTACHMENT

9.6 DESIGN

VERIFICATION CHECKLIST ATTACHMENT

9.6 DESIGN

VERIFICATION CHECKLIST Sheet 1 of 3 IDENTIFICATION:

DISCIPLINE:

Document Title: Loop Uncertainty Determination for Div III Loss of Voltage -Civil/Structural Relays -GE Model NGV Undervoltage Relay r-Electrical Doc. No.: G13.18.6.2.ENS*004 Rev. 1 QA Cat.: SR ZI & C Justin Waters .igtA .,"2,q/&7 -Mechanical Verifier:

Print Sign Date E]Nuclear Manager authorization -lOther for supervisor performing Verification.

El N/A Print Sign Date METHOD OF VERIFICATION:

Design Review [ Alternate Calculations F] Qualification Test El The following basic questions are addressed as applicable, during the performance of any design verification.

[ANSI N45.2.11 -1974] [NP] [QAPD, Part II, Section 3] [ NQA-1-1994, Part II, BR 3, Supplement 3s-1].NOTE , The reviewer can use the "Comments/Continuation sheet" at the end for entering any comment/resolution along with the appropriate question number. Additional items with new question numbers can also be entered. , 1. Design Inputs -Were the inputs correctly selected and incorporated into the design?(Design inputs include design bases, plant operational conditions, performance requirements, regulatory requirements and commitments, codes, standards, field data, etc. All information used as design inputs should have been reviewed and approved by the responsible design organization,.

as applicable.

All inputs need to be retrievable or excerpts of documents used should be attached.See site specific design input procedures for guidance in identifying inputs.)Yes Z. No t N/A El 2. Assumptions -Are assumptions necessary to perform the design activity adequately described and reasonable?

Where necessary, are assumptions identified for subsequent re-verification when the detailed activities are completed?

Are the latest applicable revisions of design documents utilized?Yes Z No EI N/A []3. Quality Assurance

-Are the appropriate quality and quality assurance requirements specified?

Yes [ No El N/A 0]EN-DC-1 34 REV 2 ATTACHMENT

9.6 DESIGN

VERIFICATION CHECKLIST Sheet 2 of 3 4. Codes, Standards and Regulatory Requirements

-Are the applicable codes, standards and regulatory requirements, including issue and addenda properly identified and are their requirements for design met?YesO No ED N/A 17 5. Construction and Operating Experience

-Have applicable construction and operating experience been considered?

Yes El No ED N/A 0 6. Interfaces

-Have the design interface requirements been satisfied and documented?

Yes [I No El N/A 0 7. Methods.-

Was an appropriate design or analytical (for calculations) method used?Yes 0 No ED N/A El 8. Design Outputs -Is the output reasonable compared to the inputs?Yes 0 NoD N/A D 9. Parts, Equipment and Processes

-.Are the specified parts, equipment,*

and processes suitable for the required application?

Yes 0 No [D N/A0 10. Materials Compatibility

-Are the specified materials compatible with each other and the design environmental conditions to which the material will be exposed?Yes El. No D N/A El 11. Maintenance.

requirements

-Have adequate maintenance features and requirements been specified?

YesD No D N/A N 12. Accessibility for Maintenance

-Are accessibility and other design provisions adequate for performance of needed maintenance and repair?YesD No D N/A 0 13. Accessibility for In-service Inspection

-Has adequate accessibility been provided to perform the in-service inspection expected to be required during the plant life?Yes ED No ID N/A Z 14. Radiation Exposure -Has the design properly considered radiation exposure to the public and plant personnel?

Yes [I No Dl N/A 0 15. Acceptance Criteria -Are the acceptance criteria incorporated in the design documents sufficient to allow verification that design requirements have been satisfactorily accomplished?

Yes 0 No Dl N/A D 16. Test Requirements

-Have adequate pre-operational and subsequent periodic test requirements been appropriately specified?

Yes 0 No D N/A Z EN-DC-134 REV 2 ATTACHMENT

9.6 DESIGN

VERIFICATION CHECKLIST Sheet 3 of 3 17. Handling, Storage, Cleaning and Shipping -Are adequate handling, storage, cleaning and shipping requirements specified?

Yes E] No E] N/A 0 18. Identification Requirements

-Are adequate identification requirements specified?

Yes r- No [] N/A El 19. Records and Documentation

-Are requirements for record preparation, review, approval, retention, etc., adequately specified?

Are all documents prepared in a clear legible manner suitable for microfilming and/or other documentation storage method? Have all impacted documents been identified for update as necessary?

Yes [] No E] N/A [I 20. Software Quality Assurance-ENN sites: For a calculation that utilized software applications (e.g., GOTHIC, SYMCORD), was it properly verified and validated in accordance with EN- IT-104 or previous site SQA Program?ENS sites: This is an EN-ITM104 task. However, per ENS-DC-126, for exempt software, was it verified in the calculation?

Yes [ No [7 N/A0 21. Has adverse impact on peripheral components and systems, outside the boundary of the document being verified, been considered?

Yes [I No [] N/A 23 EN-DC-1 34 REV 2 ATTACHMENT

9.7 DESIGN

VERIFICATION COMMENT SHEET Sheet I of I Comments / Continuation Sheet Question Comments Resolution Initial/Date I Comments provided by markup for Comments resolved to the calculation G.13.18.6.2-ENS*004.

satisfaction of the reviewer.I. t+i i i F -I- t+ +F 4- F F t t F 4+ -~..-.F 4- I F 1- t EN-DC-134 REV 2 DESIGN VERIFICATION COMMENT SHEET SHEET 1 OF 1 Calculation G13.18.6.2-ENS*004, Rev. 001 (E0I Review Comments)Comments / Continuation Sheet Question Comments Resolution Initial/Date 1 Calc number should be G13.18.6.2-Corrected ENS*004 2 Calc ref sheet does list the following Agreed, those are not used.references from the original calc.Should they be listed in Section VI of the form as being removed?0221.415-000-122 3221.418-000-003U STP-302-0102 3 Should a reference be added to show I think that's a good idea -the where the Setting value of 87 VAC is setting doesn't appear to be derived in Section 8.1.1? referenced anywhere.Added reference to STP in Section 8.1.1 4 Use Ref. 3.11.1 for the STP in Section Agreed, although this paragraph 8.9 instead of directly referring to it like will be removed per comment was done in Section 8.2.3. below.5 Your change in the first paragraph to Agreed -first paragraph serves no Section 8.9 now references the STP purpose. Removed. (changes As-Left reset tolerance.

However, the page count)original paragraph pertained to the reset differential value itself, not its tolerance.

The current STP revision shows the Reset Differential as 95.70 VAC or 10% of setting. This is stated in the second paragraph of Section 8.9. Based on this I don't believe the first paragraph is required anymore since the rest is now the same whether the relay is calibrated or not calibrated during performance of the STP.Note: Per discussion, margin was added to the LU to bring it up to previous value. No margin added to TLU. See Section 8.6 and 2.1.

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