RBG-47236, Calculation G13.18.6.2-ENS*007, Revision 1, Loop Uncertainty Determination for Div III Undervoltage Time Delays - Agastat ETR14 Time Delay Relay

Calculation G13.18.6.2-ENS*007, Revision 1, Loop Uncertainty Determination for Div III Undervoltage Time Delays - Agastat ETR14 Time Delay Relay

ML12125A312
Person / Time
Site:	River Bend
Issue date:	05/02/2012
From:	Entergy Operations
To:	Office of Nuclear Reactor Regulation
References
RBG-47236 G13.18.6.2-ENS*007, Rev 1
Download: ML12125A312 (29)

Text

13 ANO-1 [] ANO-2 El GGNS F1 IP-2 El IP-3 F] PLP

[] JAF [E PNPS E RBS E) VY El W3 El NP-GGNS-3 [1 NP-RBS-3 CALCULATION (1)EC # 27437 (2)Page 1 of 22 COVER PAGE (3) Design Basis Calc. E YES F] NO (4) E CALCULATION D EC Markup Calculation No: G13.18.6.2-ENS*007 Revision: 1 (1)

Title:

Loop Uncertainty Detemination for DIV IlI Undervoltage Time Delays - ý') Editorial Agastat ETR14 Time Delay Relay D YES M NO System(s): 203/302

• Review Org (Department): NSBE3 (l&C Design)

(11) Safety Class: (12) Component/Equipment/Structure Type/N Tp/ubr umber:

[]Safety / Quality Related E22-S004-ACB4-62S3 E22-S004-ACB1-62S4 El Augmented Quality Program FD Non-Safety Related E22-S004-ACB4-62S5 E22-S004-ACB1I-62S6 (13) Document Type: F43.02 (14) Keywords (Description/Topical Codes):

uncertainty, calculation, relay, time delay REVIEWS (15) Name/Signature/Date (16) Name/Signature/Date (17) Name/Signature/Date Chuck Mohr Robin Smith Paul Matzke (see EC 11753 for signature) (see EC 11753 for signature) (see EC 11 753 for signature)

Responsible Engineer [ Design Verifier Supervisor/Approval El Reviewer Z_ Comments Attached Z Comments Attached EN-DC-1 26 REV 4

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM G13.18.6.2-ENS*007 Rev. 1 ENGINEERING DEPARTMENT PAGE 2 OF 22 RIVER BEND STATION EENTERGY.

-CALCULATION REFERENCE CALCULATION NO: G. 13.18.6.2-ENS*007 SHEET REVISION: I

1. EC Markups Incorporated (N/A to NP calculations) None

11. Relationships: Sht Rev Input Output Impact Tracking Doc Doc Y/N No.

1. EN-DC-126 -- 002 0] E N

2. EN-IC-S-007-R -- 000 01 E N

3. 7224.300-000-001B -- 300 01 13 N

4. 201.130-186 -- 000 R1 E N 5.215.150 -- 006 01 0 N

6. A348-0116. -- 000 0 El N

7. 6221.418-000-001A -- 300 0 0l N

8. GE-DL828E537AA -- 018 0 03 N

9. 0221.418-000-008 -- 300 01 E N

10. EE-001M -- 009 0 El N

11. A348-0111 -- 000 0 El N

12. GE-828E537AA 003 028 0 El N

13. GE-828E537AA 007 030 0 03 N

14. GE-828E537AA 008 028 R1 E N

15. GE-828E537AA 011 029 01 E N

16. STP-302-1604 -- 018 0 El N

17. BE-230D -- 010 0 El N

18. G13.18.6.3-014 -- 000 0 El N

19. EDP-AN-02 -- 300 0 El N

20. G13.18.3.1*002 -- 004 El 0 Y EC11753

21. STP-302-1605 -- 021 0 El N

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1

__ _ , PAGE 3 OF 22

,-- RIVER BEND STATION ENTERGY Ill. CROSS

REFERENCES:

1. Indus Asset Suite Equipment Data Base (EDB)

2. Technical Specifications section B3.3.8.1

3. USAR Figures 3.11-1 through 5

4. EQTAP 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: Related references not longer used:

1. STP-302-0102

2. 0221.415-000-122

3. 3221.418-000-003U

4. B455-0139

5. VTD-F137-0100

6. GE-152D8167, # 003, #003A, #004, #005

7. Multi-Amp Instruction Book EPOCH-10

8. 242.521

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM GI3.18.6.2-ENS*007 Rev. 1 ENGINEERING DEPARTMENT PAGE 4 OF 22 RIVER BEND STATION ENTERGY Revision Record of Revision Initial issue to support determination of degraded voltage relay setpoints by Electrical Engineering 0

I Incorporated new drift value and extended calibration period to 30 months per EC 11753.

+

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1

______* PAGE 5 OF 22

-* _ RIVER BEND STATION ENTERGY TABLE OF CONTENTS COVER SHEET CALCULATION REFERENCES RECORD OF REVISION SECTION PAGE 1.0 Purpose and D escription ......................................................................................................... 6 2 .0 R esults/C onclusions ....................................................................................................................... 8 3.0 References ................................................................ 9 4.0 Design In p u t ................................................................................................................................. 11 5 .0 N om enclature ............................................................................................................................... 13 6.0 C alculation M ethodology ............................................................................................................. 14 7 .0 A ssum p tio ns ................................................................................................................................ 15 8 .0 C alcu latio n ................................................................................................................................... 17 Attachments:

1 Design Verification Form and Comments ...................................................... 7 pages

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM

_PAGE h ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1 6 OF 22 RIVER BEND STATION ENTERGY _

1.0 Purpose and Description 1.1. Purpose The purpose of this calculation is to determine the uncertainty associated with the existing Division Ill, Safety-Related, 4.16 kV undervoltage time delay relays. Nominal trip Set point 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 Division III 4.16 kV emergency bus has its own independent sustained Degraded Voltage instrumentation and associated trip logic. The Division III bus is monitored by two undervoltage relays whose outputs are arranged in a two-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, which starts the time delay relays to open the DIV II Normal Supply source breaker and illuminates a Main Control Room annunciator alarm. Two different time delays are applied depending on whether a LOCA signal is present at the time of the degraded voltage. The LOCA time delay is provided by the 27N relay. The Non-LOCA time delay is provided by the combination of the 27N relay and the ETR14 relays.

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. The Time Delay Allowable Values are long enough to provide time for the offsite power supply to recover to normal voltages, but short enough to ensure that power is available to the required equipment."

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 distribution in accordance with 7224.300-100-001 B, "General Electric Instrument Setpoint Methodology," (Reference 3.3) and EN-IC-S-007-R, "Instrument Loop Uncertainty & Setpoint Calculations", (Reference 3.2). One-sided probability is used since the time delay relay performs its safety function in the decreasing direction only.

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.

SETPOINT CALCULATION ENGINEERING DEPARTMENT CALC. NO. - REV. ADDENDUM G13.18.6.2-ENS*007 Rev. 1

._ PAGE 7 OF 22

" ~ RIVER BEND STATION ENTERGY 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 devices 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 CALC. NO. - REV. ADDENDUM G13.18.6.2-ENS*007 Rev. 1 ENGINEERING DEPARTMENT PAGE 8 OF 22 ENER--

ENTERGY RIVER BEND STATION 2.0 Results/Conclusions 2.1. Results The Loop Uncertainty and Total Loop Uncertainty for the Agastat time delay 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 2.2. Conclusions The calculated Loop Uncertainty and Total Loop Uncertainty presented in table 2.1-1. These values apply to the relays and circuits listed in Section 2.1.

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1

_PAGE 9 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. A348-0116, Amerace - Agastat Nuclear Qualified Control Relays 3.9.2. Not used 3.9.3. Not used 3.9.4. 6221.418-000-001A, High Pressure Core Spray System Power Supply Unit, NED010905 3.9.5. 0221.418-000-008, Purchase Specification Data Sheet 21A9300AU, High Pressure Core Spray System 3.9.6. A348-01 11, Amerace Electronic Components Catalog, Agastat Electromechanical Relays.

3.10. Electrical Schematics 3.10.1. EE-001M, 4160V One Line Diagram Standby Bus E22-S004

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1

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• PAGE 10 OF 22 RIVER BEND STATION ENTERGY 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 3.10.5:- GE-828E537AA#01 1, Elementary Diagram HPCS Power Supply System 3.11. Surveillance Test Procedures:

3.11.1. STP-302-1605, HPCS Degraded Voltage Channel Calibration and Logic System Functional Test 3.11.2. STP-302-1604, HPCS Loss of Voltage Channel Calibration and Logic System Functional Test 3.11.3. Not used 3.12. Logic Diagrams None 3.13. Standards None 3.14. Equipment Qualification Trending and Thermal Aging Program (EQTAP) 3.15. 4:16 Kv Bus E22-S004 Relay Settings, Drawings BE-230D 3.16. Calculations 3.16.1. Not used 3.16.2. G13.18.3.1*002, Sustained and Degraded Voltage Relay Setpoint for E22-S004 3.16.3. G13.18.6.3-014, Drift Study for Agastat ETR Series Time Delay Relays 3.17 GE-DL828E537AA, Elementary Diagram-Device List

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM G13.18.6.2-ENS*007 Rev. 1 ENGINEERING DEPARTMENT PAGE 11 OF 22 RIVER BEND STATION ENTERGY 4.0 Desipn Input The following are the design inputs used to determine the uncertainty for the Division III Agastat time delay relays.

4.1. Loop Input 4.1.1. Loop Data:

Form 1: Loop/Process Data Sheet Description Data Reference Loop Sensor(s) Auxiliary Relays 3.10.4 Location E22-S004 3.10.4 Output Contact closure 3.10.4 4.1.2. Special Considerations:

4.1.2.1 Calibration shall be performed using the following instruments:

. Multi-Amp EPOCH-40 DC/Timer Test set.

4.2. Loop Instrumentation Form 2: Instrument Data Sheet Calc. Device Number 1 Description Data Reference Component Number(s) E22-S004-ACB4-62S3 3.4 E22-S004-ACB1-62S4 3.10 E22-S004-ACB4-62S5 E22-S004-ACB 1-62S6 Manufacturer Amerace/Agastat 3.17 Model ETR14 3.17 Location(s) CB. 116/E33-S004 3.4 Service Description Relay 3.4 Quality Class Safety Related 3.4 Environmental Qualification N 3.4 Input Range 0-125 VDC 3.10 Output Contact Action 3.10 Calibration Interval Evaluated 30 Mo (24 Mo. + 25%). 3.2

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM G13.18.6.2-ENS*007 Rev. 1 ENGINEERING DEPARTMENT PAGE 12 OF 22 RIVER BEND STATION ENTERGY 4.3. Loop Device Data Form 3: Instrument Accuracy Data Sheet Calc. Device Number 1 Agastat ETR14 Data References Description Time Delay Reference Accuracy (RAR) 10% of Setting (2o) 3.9.1 5% of Setting (TR) (2(y) 3.9.6 Seismic Effects (SER) 0 7.1.4 Temperature Effects (TER) 5% of setting 3.9.6 3.14 0 7.1.

(40'F- 122 F) 2 0 7.1.12 Insulation Resistance Effects (IRR) N/A 7.1.10 Temperature Drift Effect (TDR) N/A 7.1.13 Drift (DRR) 3.725% Setpoint 3.16.3 2c0 Power Supply Effect (PSR) 5% of setting (includes TER) 3.9.6 2a 3.14 4.4. Environmental Information Form 4: Environmental Conditions Data Sheet Zone: CB-116-2 Description Data Reference Location Building/Elevation CB-1 16 3.4 Room/Area Switchgear Room 3.4 Normal Temperature Range, 'F 40 - 109 3.6 (68°F to 83'F act.) 3.14 Humidity Range, %RH 20-95 3.6 Radiation 40 Year Total Integrated 800 3.6 Dose, 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

CALC. NO. - REV. ADDENDUM SETPOINT CALCULATION G13.18.6.2-ENS*007 Rev. 1 ENGINEERING DEPARTMENT PAGE 13 OF 22 RIVER BEND STATION 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 CALC. NO. - REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1 PAGE 14 OF 22 RIVER BEND STATION E ITERGY 6.0 Calculation Methodologtv 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 7224.300-000-001B, "General Electric Instrument Setpoint Methodology" (Reference 3.3).

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 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 207 value and with intermediate rounding of values in the conservative direction, sufficient conservatism has been introduced.

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

7.1.3. Zero Effect (ZE)

Not applicable 7.1.4. Seismic Effects (SE)

Reference 3.9.1 states that the timing delays have been tested to 6 g ZPA "without damage, malfunction or failure." Reference 3.5 defines the expected level of seismic activity for the 116 ft elevation of the control building as less than 3g. Therefore, seismic effects are assumed to be 0.

7.1.5. Radiation Effects (RE) & Radiation Drift Effect (RD)

Are not applicable to the relays evaluated by this calculation as they are located in a mild environment (Reference 3.6).

7.1.6. Power Supply Effects (PS)

Per reference 3.9.6, Power Supply Effects for the model TR time delay function is assumed to be well under 5% of setting under all control voltage conditions. Therefore, for conservatism the power supply effects on the time delay function will be assumed to equal +/-5% of setting.

7.1.7. Process Measurement Uncertainty (PM)

Not Applicable 7.1.8. Static Pressure Effects (SP)

Not Applicable

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1

_PAGE 16 OF 22

• v RIVER BEND STATION ENTERGY 7.1.9. Humidity Effects (HE)

The relays were specified by the HPCS manufacturer and are assumed to be designed to withstand 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 to 90% relative Humidity. Per Reference 3.6, the humidity range for environmental zone CB- 116-2 is 20 to 90% RH. Reference 3.6 also identifies that 1% of the days/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 from degradation of circuit insulation, are not applicable to the devices and circuits addressed by this calculation. The timers evaluated are not low-current DC devices affected by current leakage due to insulation resistance degradation.

7.1.11. Voltage Drop Voltage drop due to long wiring lengths between source and load are assumed to be negligible as the timing relays evaluated by this calculation are located in the same switchgear compartment. The voltage effects are included in the temperature effects per Ref. 3.9.1 and 3.9.6.

7.1.12. Temperature Effects (TE)

Per Reference 3.9.1, the temperature effect for the ETR relay is 10% of setting over a span of 40'- 156'F. Per Reference 3.9.6, the temperature effect for the TR relay is 5% of setting over a span of 32°- 122°F (the non-safety version of the same relay). Since the historical temperature in the area only varies 14'F the 5% value is assumed. The non-safety relay is built to the same specifications but substitute material may be used. This value will be used to determine relay temperature effect. The 5% tolerance is combined with voltage effects in Ref. 3.9.6 but will be conservatively used as an independent effect.

7.1.13. Temperature Drift Effects (TD)

The drift analysis performed in Reference 3.16.3 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 Deleted 7.2. Assumptions that require confirmation None

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1

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-- RIVER BEND STATION ENTERGY 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 to Use 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 Loop Drift (DL) 8.8) Calculation of Total Loop Uncertainty (TLU) 8.9) Calculation of Reset Differential 8.1. Calculation of Miscellaneous Uncertainties 8.1.1. Calculation of Power Supply Effects on 62S3 and 62S4 Time delay setting (PSg_)

(Reference 3.9.1, Assumption 7.1.6)

PSRTI = +/- 5% of Time Delay setting, Setting is 3.0 seconds from Ref. 3.15

= +/- (0.050*3.0) seconds

=+/-0.15 seconds (2a value) 8.1.2. Calculation of Power Supply Effects on 62S5 and 62S6 Time delay setting (PSgT (Reference 3.9.1, Assumption 7.1.6) Setting is 54.9 seconds per Ref. 3.16.2 PSRT2 = + 5% of Time delay setting Setting

= (0.050

• 54.9) seconds

- 2.745 seconds (2c value) 8.1.3. Calculation of Temperature Effects on 62S3 and 62S4 Relay Time Delay Settings (TERT)

(Reference 3.9.1, Assumption 7.1.12)

TERTI = + 5% of Time Delay setting under Adverse Conditions

= +/- (0.05 x 3) seconds

=+ 0.15 seconds (2c value) 8.1.4. Calculation of Temperature Effects on 62S5 and 62S6 Relay Time Delay Settings (TEg+)

(Reference 3.9.1, Assumption 7.1.12)

TERT2 = +/- 5% of Time Delay setting under Adverse Conditions

= +/- (0.05 x 54.9) seconds

= 2.745 seconds (2a value)

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1

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-- " RIVER BEND STATION ENTERGY 8.2. Calculation of Individual Device Reference Accuracy (RA) & Determination of Appropriate Device Uncertainty 8.2.1. Undervoltage Relay Reference Accuracy for Time Delay Setting (RART)

RARTI +/- 5% of Setting Setting is 3.0 seconds per Ref. 3.15

- +/- 0.05

• 3.0 seconds

-+/-0.15 seconds (2o value) 8.2.2. Undervoltage Relay Reference Accuracy for Time Delay Setting (RART)

RART2 = +/- 0.5% of Setting

+/- 0.05

• 54.9 seconds

= 2.745 seconds (2a Value) 8.3. Calculation of Individual Device Uncertainties (Reference 3.2) 8.3.1. Device Uncertainty Relay Time Delay Setting (ART)

(Sections 8.2.3, 8.1.3, 8.1.5) 2 2 ARTI = [(RART)2 + (PSRT) 2 + (TERT) ]1

= +/- [(0.15)2 + (0.15)2 + (0.15)2]1/2 seconds

+ 0.2598 seconds (2cy value)

This is conservative because the impacts-of RART, PSRT and TERT are all combined in the manufacturers specified RART.

8.3.2. Device Uncertainty Relay Time Delay Setting (AR)

(Sections 8.2.3, 8.1.3, 8.1.5) 2 2 ART2 = +/- [(RART) + (PSRT) + (TEr)2]1/2

= [(2.745)2 + (2.745)2 + (2.745)2] 1/2seconds

= +/- 4.754 seconds 8.4. Calculation of Loop Calibration Accuracy (CL)

Per references 3.2 and 3.3, loop calibration effects are defined as:

2 2 CLT = +/- [(MTEL) + (CTLT) ]1/2 The CTL is set to the procedural as-left band (PALB) since the PALB is greater than the ART per Ref. 3.2. New PALB's of 0.18 and 3.0 (Ref. 3.11) are selected by iteration of this calculation results into Ref. 3.16.2 and used for CTLT.

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1

,_,___* PAGE 19 OF 22 RIVER BEND STATION ENTERGY 8.4. 1. Calculation of Loop Calibration Effects for the Time Delay Setting (C_)

2 2 CLTI = [(MTELT0 + (CTLT) ]1/2

=-+/--[(1.55 x 10"4)2 + (0.18)2] /2 seconds

= + 0.18 seconds 2 2 CLT2 = - [(MTELT2) + (CTLT) ]1/2

= +/- [(2.83 x 103)2 + (3.0)21/2 seconds

= + 3.00 seconds 8.4.2.1 Measurement & Test Equipment (MTEL) effects 2are defined from 2 Reference 3.2 as:

MTELV = + [(MTERAT) + (MTERIT) + (MTETET) + (MTEcsT) ]1/2 2 2 Where:

MTERAT = The reference accuracy of the M&TE being utilized. Epoch 40 Aux.

Timer and DC voltage/current unit has a timer accuracy of 0.005% or one digit on the min. 99.9999 range. Using 3.0 x 0.00005 = 1.5 x 10-4 seconds or using 54.9 x 0.00005 = 2.745 x 10- 3 seconds.

MTETET = Temperature effect on the M&TE being utilized. Zero is assumed since the Epoch 40 operating range is 00 to 500C with no temperature coefficient given. (Reference 3.9.4).

MTERIT = Assumed to be 0 as all M&TE used are digital with at least 2 digits of resolution. (Reference 3.2)

MTEcST = Assumed equal to 1/4 the Reference Accuracy of the time delay function of the relay time delay function = 0.005%/4 seconds (per Reference 3.2).

2 2 2 2 MTELI = +/- [(MTERARTI) + (MTERIRTI) + (MTETERTI) + (MTEcsRTI) ]/2

= +/- [(1.5 X 10-4)2 + (0)2 + (0)2 + (3.75 X 105)2]I/2

= +/- 1.55 X 10-4 seconds. (2a Value) 2 2 2 2 MTEL2 = -+/--

[(MTE.ART2) + (MTER[RT2) + (MTETERT2) + (MTEcSRT 2 ) ]"1 3 2

= +/- [(2.745x10- ) + (0)2 + (0)2 + (6.86 x 104)2]I/2

= +/- 2.83 x10 3 seconds. (2(y Value) 8.5. Calculation of Insulation Resistance Effects (IR) 0 per Assumption 7.1.10 8.6. Calculation of Loop Uncertainty (LU) 8.6.1. Loop Uncertainty for Time Delay Setting (LU!)

Per references 3.2 and 3.3 Loop Uncertainty is defined as:

2 2 2 LUTI = +/- (m/n)[(ARTI) + (CLTI) ]"

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM

_PAGE a ENGINEERING DEPARTMENT G13.18.6.2-ENS*007 Rev. 1 20 OF 22

.. RIVER BEND STATION ENTERGY I Where: m = The number of standard deviations required to encompass 95% of the area under the curve for a normal distribution either one or two sided. 1.645 corresponds to a one sided confidence while 2.00 corresponds two a two sided confidence.

N = The number of standard deviations used in specifying the individual components of uncertainty

+/-+ (2.0/2)[(0.2598)2 + (0.18)2] U/2

= +0.316 seconds One or two sided distributions may be used in this calculation. Where appropriate, two sided distributions will be used for extra conservatism.

8.6.2. Loop Uncertainty for Time Delay Setting (LUr)

Per references 3.2 and 3.3 Loop Uncertainty is defined as:

2 LUT2 = +/- (m/n)[(ART2) + (CLT2)211/2

= + (2.0/2)[(4.7544)2 + (3.0)21,/2

= 5.622 seconds 8.7. Calculation of Loop Drift (DO 8.7.1. Transformer Temperature Drift Effects (TDT)

N/A for both the voltage and time delay function per Assumption 7.1.13 8.7.2. Relay Temperature Drift Effects (TDR)

N/A for both the voltage and time delay function per assumption 7.1.13 8.7.3. Relay Drift (DRRv) 8.7.3.1 Relay Drift for Time Delay Setting (DRRT) (Assumption 7.1.14)

DRRT1 = + 3.725% Setpoint

= + (0.03725 x 3) seconds

= 0.112 seconds (2o Value)

As there are no other components of drift to be considered for the relay time delay setting, Loop drift for the time delay setting (DRLT) = DRRT 8.7.3.2 Relay Drift for Time Delay Setting (DRRT) (Assumption 7.1.14)

DRRT2 = + 3.725% Setpoint

= + (0.03725 x 54.9) seconds

= + 2.05 seconds (2o Value)

As there are no other components of drift to be considered for the relay time delay setting, Loop drift for the time delay setting (DRLT) = DRRT

ENGINEERING SETPOINT CALCULATIONDEPARTMENT G13.18.6.2-ENS*007 CALC. Rev. 1 NO. - REV. ADDENDUM PAGE 21 OF 22

-RIVER BEND STATION ENTERGY _

8.8. Calculation of Total Loop Uncertainty (TLU) 8.8.1. Total Loop Uncertainty - Time Delay Setting (TLU1 )

Per references 3.2 and 3.3 Total Loop Uncertainty is defined as:

TLUTI = - (rn/n) [(ART]) 2 + (CLTI) 2 + (DRLTI) 2]1 2 +/- M (margin)

= + (1.645/2)(((0.2598 )2 + (0.18)2 + (0.112)2112 +/- 0.042

= 0.322 seconds Per ref. 3.9.1 the repeat accuracy under adverse conditions is 10%. Adverse conditions include high/low temperature, high/low humidity, and low voltage which envelope the requirements for TLU.

TLUT =+/- (10.0%) (3.0)

= +/- 0.300 seconds Tech Spec limits are 3.33 to 2.67 sec. = 0.33 sec.

8.8.2. Total Loon Uncertainty - Time Delay Setting (TLU1)

Per references 3.2 and 3.3 Total Loop Uncertainty is defined as:

TLUT2 = (m/n) [(ART2) 2 + (CLT2) 2 + (DRTL2) 2 ]1 2

= (2.0/2)((4.754)2 + (3.0)2 + (2.05)2]112

= +/- 5.99 seconds.

Per ref. 3.9.1 the repeat accuracy under adverse conditions is 10%. Adverse conditions include high/low temperature, high/low humidity, and low voltage which envelope the requirements for TLU.

TLUT2 =-+/--(10.0%) (54.9)

= +/- 5.49 seconds therefore selected method is more conservative..

Tech spec limits are 53.4 to 66.6 sec. = + 6.6 sec

SETPOINT CALCULATION CALC. NO. - REV. ADDENDUM G13.18.6.2-ENS*007 Rev. 1 ENGINEERING DEPARTMENT PAGE 22 OF 22 RIVER BEND STATION ENTERGY Summary of Calculation Data Time Delay Relay Device 1 Time Delay Normal Conditions Time Delay Adverse Conditions (TR data) (ETR data)

Terms Values 0 Ref Values G Ref Input Range 62S3,62S4 .55 to 15 396 .55 to 15 62S5,62S6 4 to 120 4 to 120 -

Process Units Seconds - 3.9.6 Seconds - 3.9.1 Voltage Range 85-1 10%V 3.9.6 80% Min V. 3.9.1 Humidity 40-60% 3.9.6 10-95% 3.9.1 Temperature Range 'F 70-104 - 3.9.6 40-145 - 3.9.1 Reference Accuracy (RA) 5% of Setting 2 3.9.6 +10% of 2 3.9.1

___________________________Setting______

7.1.12 Included in 7.1.12 Included in 2.1.3 Temperature Effect (TE) RA 2 8.1.4 RA 8.1.3 8.1.4 Seismic Effects (SE) Included in - 7.1.4 Included in - 7.1.4 RA RA Radiation Effect (RE) Included in - 7.1.5 Included in - 7.1.5 RA RA

+0.112 sec. 2 7.1.14 +0.112 sec. 2 7.1.14 Instrument Drift (DR) +/- 2.05 sec. 2 8.7.3 + 2.05 sec. 2 8.7.3 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 Included in 7.1.6 Included in 7.1.6 Power Supply Effect (PS) RA 2 8.1.1 RA 2 8.1.2 Humidity Effects (HE) Included in - 7.1.9 Included in - 7.1.9 RA RA 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

ATTACHMENT 9.1 DESIGN VERIFICATION COVER PAGE Sheet I of I DESIGN VERIFICATION COVER PAGE Ii ANO-1 [3 ANO-2 LI IP-2 13 IP-3 3 JAF E] PLP n] PNPS El VY [] GGNS ZRBS 0 W3 ED NP Document No. G13.18.6.2-ENS-007 Revision No. 1 Page 1 of 4

Title:

Loop Uncertainty Determination for DIV III Undervoltage Time Delays - Agastat ETR14 Time Delay Relay Z Quality Related El Augmented Quality Related DV Method: [ Design Review E3 Alternate Calculation El Qualification Testing VERIFICATION REQUIRED DISCIPLINE VERIFICATION COMPLETE AND COMMENTS RESOLVED (DV print, sign, and date)

D] Electrical El Mechanical Instrument and Control Robin Smith Z.o El Civil/Structural Nuclear El q []

Originator: Charles Mohr Print/Sign/Date After Comments Have Been Res'olved EN-DC-134 REV 2

ATTACHMENT 9.6 DESIGN VERIFICATION CHECKLIST ATTACHMENT 9.6 DESIGN VERIFICATION CHECKLIST Sheet I of 3 IDENTIFICATION: DISCIPLINE:

Document

Title:

Loop Uncertainty Determination for DIV III Undervoltage Time ECivil/Structural Delays - Agastat ETR14 Time Delay Relay ElElectrical

[*I&c Doc. No.: G13.18.6.2-ENS-007 Rev. 1 QA Cat.: SR E-Mechanical Robin Smith -Nuclear Verifier: Print Si*n

• Dete EOther Manager authorization for supervisor performing Verification.

Z N/A Print Sign Date METHOD OF VERIFICATION:

Design Review M Alternate Calculations El Qualification Test 17 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 [] N/A D

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 applicablerevisions of design documents utilized?

Yes E No ED N/A D

3. Quality Assurance - Are the appropriate quality and quality assurance requirements specified?

Yes Z No Dl N/A El EN-DC-134 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?

Yes [A No El N/A El

5. Construction and Operating Experience - Have applicable construction and operating experience been considered?

Yes El No [ N/A Z

6. Interfaces - Have the design interface requirements been satisfied and documented?

Yes El No 0 N/A 0

7. Methods - Was an appropriate design or analytical (for calculations) method used?

Yes E No El N/A [

8. Design Outputs - Is the output reasonable compared to the inputs?

Yes 0 No [ N/A E

9. Parts, Equipment and Processes - Are the specified parts, equipment, and processes suitable for the required application?

Yes El No [I N/A El

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 0 N/A Z

11. Maintenance requirements - Have adequate maintenance features and requirements been specified?

Yes 17 No El N/A 0

12. Accessibility for Maintenance - Are accessibility and other design provisions adequate for performance of needed maintenance and repair?

Yes 0 No 17 N/A ED

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 El No El N/A Z

14. Radiation Exposure - Has the design properly considered radiation exposure to the public and plant personnel?

Yes 0 No [I N/A Z

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 0 N/A [

16. Test Requirements - Have adequate pre-operational and subsequent periodic test requirements been appropriately specified?

Yes El No El N/A 0 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?

YesEI NoD N/A E

18. Identification Requirements - Are adequate identification requirements specified?

Yes [3 No El N/A E

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 Z No 0 N/A El

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-IT-104 task. However, per ENS-DC-1 26, for exempt software, was it verified in the calculation?

Yes E] No El N/A Z

21. Has adverse impact on peripheral components and systems, outside the boundary of the document being verified, been considered?

Yes C] No ED N/A E EN-DC-134 REV 2

ATTACHMENT 9,7 DESIGN VERIFICATION COMMENT SHEET Sheet 1 of 1 Comments / Continuation Sheet Question Comments Resolution Initial/Date 1 Comments provided by markup for Comments resolved to the calculation G.13.18.6.2-ENS*007. satisfaction of the reviewer.

EN-DC-134 REV 2

DESIGN VERIFICATION COMMENT SHEET SHEET 1 OF 1 Calculation G13.18.6.2.-ENS*007, Rev. 001 (EOl Review Comments)

Comments / Continuation Sheet Question Comments Resolution Initial/Date 1 See generic comments in 2/10/09 memo to Resolved as agreed.

Jim Schott. - Ref Form & Section 3 match

- Revision formatting changed

- DV comment form attached 2 Calc # is should be G13.18.6.2-ENS*007. Corrected calc # on front page.

3 Calc ref sheet does list the following Added 0221.415-000-122, references from the original calc. Should 242.521, 3221.418-000-003U, they be listed in Section VI of the form? B445-0139 to section VI 0221.415-000-122 (removed).

242.521 3221.418-000-003U Also added references VTD-F137-B445-0139 0100, and Multi-Amp Instruction Book EPOCH-10 to section VI Also, GE-DL828E537AA and BE-230D (removed).

are not listed but are referenced in the calc and shown in Section 3.0. Added GE-DL828E537AA and BE-230D to the calc. Reference sheet.

4 Section 2.2: typo; change "fort" to "for". Revised paragraph, typo eliminated.

5 On the Calc Ref Sheet and Ref. 3.4 corrected change "Passport EDB" to "Indus Asset Suite Equipment Data Base (EDB)".

Passport was replaced by Indus awhile back.

6 Make sure the final approval of calc's Okay.

G13.18.6.3*014 still supports the new drift value on Page 13 of the calc for a 30 month calibration frequency. Also, why Corrected error in the Excel calc does this Excel calc have an "." in it and number format.

others don't?

7 Component numbers in Section 4.2 do not Corrected component number mis-match component numbers in section 2.1 match.

and cover pa ge.

8 Move 8.4.1 on page 19 to top of next page. Moved as suggested.

9 Shouldn't assumption 7.1.14 be deleted Assumption 7.1.14 changed to since there's no assumption being made? read "deleted".

10 Is reference 9.3.2 used in the calc? It's on Reference is actually 3.9.2 and it the Calc Ref Sheet. was removed from calc., Ref. form and added to Sec. VI.

11 Calc G13.18.3.1*002 is shown as being These TLU's are an input to that impacted. What is the impact? calc.

12 Where do the revised Channel Drift values Drift comes from section 8.7.3, in table 2.1-1 come from? values were corrected on Table 2.1-1.

13 (new) Use of word "bounding" in section 2.2 need Per phone discussion revised clarifying. section 2.2 "Conclusions" as to what components and circuits the calculated values apply to.

DESIGN VERIFICATION COMMENT SHEET SHEET 1 OF 1 Calculation G13.18.6.2-ENS*007, Rev. 002 (E0I Review Comments, Second Round)

Comments I Continuation Sheet Question Comments Resolution Initial/Date 1 Remove space in drift value in Form 4 Removed space.

on Page 12. Should be "3.725%"

2 Sections 8.8.1 and 8.8.2 reference Those TS limits are not changed Tech Spec limits. Verify that these by the pending revision to values don't change in G13.18.3.1*002.

G13.18.3.1*002.