Text

Rev 0 to Calculation of Trip Setpoint Values,Plant Protection Sys
	ML20094F632
Person / Time
Site:	Palo Verde
Issue date:	07/31/1984
From:	; ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY
To:	;
Shared Package
ML17298B139	List: ML20094F632;
References
	CEN-286(V), CEN-286(V)-R, CEN-286(V)-R00, NUDOCS 8408100137
	Download: ML20094F632 (118)
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r CEN2861.R0A/002 ARIZONA NUCLEAR PUBLIC POWER PALO VERDE NUCLEAR GENERATING STATION 1 CALCULATION OF TRIP SETP0 INT VALUES, PLANT PROTECTION SYSTEM DOCUMENT NUMBER CEN-286(V)

Revision 00 July 31,1984 Combustion Engineering, Inc.

Nuclear Power Systems Windsor, Connecticut A-

P" CEN2861.R0A/064 LEGAL NOTICE This report was prepared as an account of work sponsored by Combustion Engineering, Inc. Neither Combustion Engineering nor any person acting on its behalf:

a. Makes any warranty of representation, expressed or implied, including the warranties of fitness for a particular purpose or merchantability, with respect to the accuracy, canplete-ness, or usefulness of the information contained in this report, or that the use of any information, appartus, method, or process disclosed in this report may not infringe on privately owned rights; or

b. Assumes any liabilities with respect to the use of, or for damages resulting from the use of, any information, appartus, method or process disclosed in this report.

Page 2

CEN2861.R0A/126 ABSTRACT The method used in this calculation tdaulates and combines equipment uncertainties with Safety Analysis Setpoints to produce Trip Setpoints and Allowable Values for the Technical Speci fications.

The objective of this calculation is to provide Trip Setpoint Allowable Values and Response Times for the following functio Reactor Protection System (RPS)

1. Variable Overpower

2. High Logarithmic Power

3. High Pressurizer Pressure

4. Low Pressurizer Pressure

5. Low Steam Generator Pressure ,

6. Low Steam Generator Water Level

7. High Steam Generator Water Level

8. High Containment Pressure Engineered Safety Features Actuation System (ESFAS)

1. Safety Injection Actuation System (SIAS)

2. Contaimnent Spray Actuation System (CSAS)

3. Containment Isolation Actuation System (CIAS)

4. Main Steamline Isolation System (MSIS)

5. Recirculation Actuation System (RAS)

6. Auxiliary Feedwater Actuation System (AFAS)

Supplementary Protection System (SPS)

1. High Pressurizer Pressure The Plant Protection System (PPS) consists of the RPS and the ESFAS.

The calculation results are tabulated in Section 2.0 of this document .

The calculation assumptions are contained in Section 3.0 of this document.

QUALITY ASSURANCE:

This calculation has been organized and carried out in accordance with current Nuclear Regulatory Connission requirenents for Safety Grade Systems.

Page 3

r CEN2861.ROA/188 TABLE OF CONTENTS SECTION TITLE PAGE NO.

LEGAL NOTICE 2 ABSTRACT 3 TABLE OF CONTENTS 4 LIST OF TABLES 5

1.0 INTRODUCTION

1.1 PURPOSE 6 -

1.2 SCOPE 6 2.0

SUMMARY

7 3.0 ASSUMPTIONS 23 4.0 CALCULATIONS 4.1 Variable Overpower 27 4.2 High Logarithmic Power Level 33 4.3 High Pressurizer Pressure 38 4.4 Low Pressurizer Pressure 44 4.5 Low Steam Generator Pressure 50 a 4.6 Low Steam Generator Water Level 56 4.7 High Steam Generator Water Level 63 4.8 High Steam Generator Delta Pressure 68 4.9 High Containment Pressure 75 4.10 High-High Containment Pressure 80 4.11 Low Refueling Water Tank Level 85 4.12 SPS - High Pressurizer Pressure 92 5.0 APPENDIX A-1 Page 4

CEN2861.R0A/250 LIST OF TABLES TABLE NO. TITLE PAGE N0.

2.1 RPS Trip Setpoint Limits 8 2.2 ESFAS Trip Setpoint Limits 9 2.3 RPS Response Times 11 2.4 ESFAS Response Times 12 2.5 PPS Trip Setpoints and Voltages 13 2.6 PPS Allowable Values and Voltages 14 2.7 PPS Pretrip Setpoints and Voltages 15 2.8 PPS Cabinet Calibration Data and Voltages 16 2.9 PPS Cabinet Periodic Test Data and Voltages 17 4 2.10 PPS Measurement Channel Calibration Data 18 and Voltages 2.11 PPS Measurenent Channel Periodic Test Data 19 and Voltages Page 5

CEN2861.ROA/312

1.0 INTRODUCTION

1.1 PURPOSE This calculation provides input to Technical Specification Tables 2.2-1, 3.3-2, 3.3-4 and 3.3-5. These tables list the trip setpoints and response times for the Reactor Protection System (RPS), the Engineered Safety Features.

. Actuation System (ESFAS) and the Supplementary Protection System (SPS). The Plant Protection System (PPS) consists of these three systems.

1.2 SCOPE Section 2.0 summarizes the results and provides the necessary data for the Technical Specification Tables.

Channel diagrams are provided in the Appendix.

l Page 6 a

CEN2862.ROA/002 2.0

SUMMARY

The tables in this Section sunanarize the results of the calculations of Section 4.0.

Table 2.1 and Table 2.2 provide the Trip Setpoints and Allow-able Values for the Technical Specifications. Table 2.1 provides the input to Technical Specification Table 2.2-1 (RPS) and Table 2.2 provides the input to Technical Specific-ation Table 3.3-4 (ESFAS).

Table 2.3 provides the RPS response times, from the sensor to the Reactor Trip Switch Gear, for Technical Specification Tabl e 3.3-2.

Table 2.4 provides the ESFAS response times, from the sensor to the output of the ESF Cabinet, for Technical Specification Tab l e 3. 3-5.

Table 2.5 and Table 2.6 provide the voltage equivalents of the PPS Trip Setpoints and Allowable Values. The. Trip Setpoint voltage will be set into the equipment during cali-bration and it incorporates all necessary allowances. The Allowable Value voltage is required to allow for equipment drift between surveillance tests.

Table 2.7 provides Pretrip Setpoints and their equivalent vol tages. These values are reconinendations based on expected operation and may be changed as necessary.

Table 2.8 and Table 2.10 provide the calibration tolerances, which serve as error limits during periodic tests. If the instrument reading is within this tolerance band, no recali-bration 'is necessary.

Table 2.9 and Table 2.11 provide the periodic test error limits.

If the instrument reading is outside the calibration tolerance band but within the periodic test error band, the channel segnent is functioning as intended although recalibration is required. If the reading is outside of the periodic test error band, the instrumentation is not behaving as expected. The source of the anomaly and the possibility of exceeding the Allowable Value should be investigated. Only the violation of the Allowable Value is a reportable incident.

Process instrument periodic tiest errors support a calibration schedule of 22.5 months. Consequently, all four channels of each trip function must be recalibrated within this time period.

In the tables, some items are followed by integers in par-entheses. These numbers refer to explanatory notes, which follow the collection of tables.

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CEN2862.ROA/064

- - TABLE 2.1 REACTOR PROTECTION SYSTEM TRIP SETPOINT LIMITS VIIP ALLOWABLE FUNCTION (1) SETPOINT VALUE Variable Overpower (2)

CEILING (3) <= 110.0 % <= 111.0 %

RATE (4) <= 10.6 %/ min <= 11.0 %/ min STEP (5) <= 9.8 % <= 10.0 %

High Logarithmic <= 0.7 98 % <= 0.895 %

Power Level (2,6)

High Pressurizer- <= 2383 psia <= 2388 psia Pressure Low Pressurizer >= 1837 psia >= 1822 psia Pressure (7)

High Containment <= 3.0 psig <= 3.2 psig Pressure Low Steam Generator >= 919 psia >= 912 psia Pressure (8)

Low Steam Generator >= 44.2 % WR >= 43.7 % WR Water Level (9)

High Steam Generator <= 91.0 % NR <= 91.5 % NR Water Level (9,10)

SPS - High <= 2434 psia <= 2439 psia Pressurizer Pressure Page 8

CEN2862.ROA/126 TABLE 2.2 ENGINEERED SAFETY FEATURES ACTUATION SYSTEM TRIP SETPOINT LIMITS FUNCTION and TRIP ALLOWABLE INITIATING SIGMAL (1) SETPOINT VALUE SAFETY INJECTICN (SIAS)

High Containment <= 3.0 psig <= 3.2 psig Pressure Low Pressurizer >= 1837 psia >= 1822 psia Pressure (7)

CONTAINMENT SPRAY (CSAS)

High-High Containment <= 8.5 psig <= 8.9 psig Pressure f

CONTAINMENT ISOLATION (CIAS)

High Containment <= 3.0 psig <= 3.2 psig Pressure Low Pressurizer >= 1837 psia >= 1822 psia Pressure (7)

MAIN STEAM LINE ISOLATION (MSIS)

HigP. Containment <= 3.0 psig <= 3.2 psig Pressure Low Steam Generator >= 919 psia >= 912 psia Pressure (8)

High Steam Generator <= 91.0 % NR <= 91.5 % NR Water Level (9)

Page 9

CEN2862.ROA/188 TABLE 2.2, CONT.

ENGINEERED SAFETY FEATURES ACTUATION SYSTEM TRIP SETPOINT LIMITS

, FUNCTION and TRIP ALLOWABLE INITIATING SIGNAL (1) SETPOINT VALUE CONTA!!NENT SUMP RECIRCULATION (SRAS)

I

~

Low Refueling Water >= 8.9 % >= 8.4 %

Tank Level (11)

EMERGENCY FEEDWATER (EFAS)

Low Steam Generator >= 25.8 % WR >= 25.3 % WR Water Level (9)

High Steam Generator <= 185 psid <= 192 psid delta Pressure l

l l

t l

i Page 10 I .

l-

CEN2862.ROA/250 TABLE 2.3 REACTOR PROTECTION SYSTEM RESPONSE TIMES RESPONSE TIME FUNCTION (1) in SECONDS (12)

Variable <= 1.15 Overpower (13)

High Logarithmic <= 0.55 Power Level (13)

High Pressurizer <= 1.15 Pressure Low Pressurizer <= 1.15 Pressure High Containment <= 1.15 Pressure Low Steam Generator <= 1.15 Pressure Low Steam Generator <= 1.15 Water Level High Steam Generator <= 1.15 Water Level (10)

SPS - High <= 1.15 Pressurizer Pressure Page 11

w. . _ - _ _ _ _ _ _ _ _ _ _ - _ - _ _ _ _ _ _ _ _ _ _ - _ _ - _ _ - - _ - _ - _ _ _ - _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ - _ _ _ _ _ _ _ _ - _ _ _ _ - - _ _ _ _ _ _ - - _ _ - _ _ _ _ _ - - _ _ _ _ _ _ _ _ ,

CEN2862.ROA/312 TABLE 2.4 ,

ENGINEERED SAFETY FEATURES ACTUATION SYSTEM RESPONSE TIMES FUNCTION and RESPONSE TIME INITIATING SIGNAL (1) in SECONDS LOW PRESSURIZER PRESSURE (14)

Safety Injection <= 1.15 Containment Isolation <= 1.15 Containment Cooling <= 1.15 HIGH CONTAINMENT PRESSURE (14)

Safety Injection <= 1.15 Containment Isolation <= 1.15 Containment Cooling <= 1.15 Main Steam Isolation <= 1.15 HIGH-HIGH CONTAINMENT PRESSURE (14)

Containment Spray <= 1.15 LOW STEAM GENERATOR PRESSURE (14)

Main Steam Isolation <= 1.15 Emergency Feedwater <= 1.15 LOW REFUELING WATER TANK LEVEL (15)

Containment Sump Recirculation <= 45.0 LOW STEAM GENERATOR WATER LEVEL (14)

Emergency Feedwater <= 1.15 HIGH STEAM GENERATOR DELTA PRESSURE (14)

Emergency Feedwater <= 1.15 Page 12

- , _ _ ~ - .,_. - .. .._-. .._ .- . . . - .= ----

r; i

CEN2862.ROA/374 TABLE 2.5

! PLANT PROTECTION SYSTEM TRIP SETPOINTS AND VOLTAGES

, TRIP SETP0!NT FUNCTION (1) SETPOINT VOLTAGE (16) l f Variable Overpower (2) i l CEILING (3) <= 110.0 % <= 5.500 vol ts RATE (4) <= 10.6 %/ min <= 0.530 V/ min STEP (5) <= 9.8 % <= 0.490 vol ts i

i High Logarithmic <= 0. 7 98 % <= 7.601 volts Power Level (2) l High Pressurizer <= 2383 psia <= 8.830 vol ts l Pressure j

Low Prassurizer >= 1837 psia >= 6.123 vol ts Pressure Low Steam Generator >= 919 psia >= 6.030 vol ts Pressure Low Steam Generator (RPS) >= 44.2 % WR >= 4.420 vol ts

[ Water Level (9.10) (EFAS) >= 25.8 % WR >= 2.580 vol ts

[

1 l

High Steam Generator <= 91.0 % NR <= 9.100 vol ts Water Level (9)

High Steam Generator <= 185 psid <= 1.214 vol ts delta Pressure High Containment <= 3.0 psig <= 2.167 vol ts Pressure l High-High Containment <= 8.5 psig <= 1.562 vol ts Pressure Low Refueling Water >= 8.9 % >= 1.356 vol ts Tank Level (11)

SPS - High <= 2434 psia <= 4.736 vol ts Pressurizer Pressure i

1 Page 13 l

k

m , . _ . _ _ . _ __ _ _ _ . _ _ _ _ _ _ _ _ . . . ._ . . _ _ _.

CEN2862.ROA/436 E

l TABLE 2.6 l

l PLANT PROTECTION SYSTEM ALLOWA8LE VALUES AND VOLTAGES ALLOWABLE ;

FUNCTION (1) VALUE VOLTAGE (17)

Variable Overpower (2)

CEILING (3) <= 111.0 % <= 5.550 vol ts RATE (4) <= 11.0 %/ min <= 0.550 V/ min STEP (5) <= 10.0 % <= 0.500 vol ts 9

High Logarithmic <= 0.895 % <= 7.651 volts !

, Power Level (2)

High Pressurizer <= 2388 psia <= 8.880 vol ts

, Pressure Low Pressurizer >= 1822 psia >= 6.073 vol ts ,

Pressure Low Steam Generator >= 912 psia >= 5.984 vol ts Pressure Low Steam Generator (RPS) >= 43.7 % WR >= 4.370 vol ts Water Level (9,10) (EFAS) >= 25.3 % WR >= 2.530 volts High Steam Generator <= 91.5 % NR <= 9.153 vol ts l Water Level (9)

High Steam Generator <= 192 psid <= 1.260 vol ts ,

delta Pressure High Containment <= 3.2 psig <= 2.200 volts Pressure High-High Containment <= 8.9 psig <= 1.580 vol ts Pressure Low Refueling Water >= 8.4 % >= 1.336 volts Tank Level (11)

SPS - High <= 2439 psia <= 4.756 volts Pressurizer Pressure Page 14 i

CEN2862.ROA/498 TABLE 2.7 PLANT PROTECTION SYSTEM PRETRIP SETPOINTS AND V0LTAGES (18)

PRETRIP SETP0 INT FUNCTION (1) SETPOINT VOLTAGE Variable - 6.0 % - 0.300 volts Overpower (2,19)

High Logarithmic <= 0.001 % <= 4.699 vol ts Power Level (2)

High Pressurizer <= 2359 psia <= 8.590 vol ts Pressure Low Pressurizer >= 1880 psia >= 6.267 volts Pressure Low Steam Generator >= 960 psia >= 6.299 vol ts

. Pressure Low Steam Generator (RPS) >= 47.1 % WR >= 4.710 vol ts Water Level (9) (EFAS ) >= 28.7 % WR >= 2.870 vol ts High Steam Generator <= 88.6 % NR <= 8.860 vol ts Water Level (9)

High Steam Generator <= 124 psid <= 0.814 vol ts delta Pressure High Containment <= 2.5 psig <= 2.083 vol ts Pressure High-High Containment <= 6.0 psig <= 1.449 vol ts Pressure Low Refueling Water >= 12.5 % >= 1.500 vol ts Tank Level (11)

SPS - High <= 2396 psia <= 4.584 vol ts Pressurizer Pressure Page 15

n ,

1 CEN2862.R0A/560 TABLE 2.8 PLANT PROTECTION SYSTEM CABINET '

CALIBRATION DATA AND VOLTAGES (20,21,22)

CALIBRATION

. FUNCTION ERROR VOLTAGE Variable Overpower (2)

CEILING (3) +/- 0.155 % +/- 0.008 vol ts RATE (4) +/- 0.106 %/ min +/- 0.005 V/ min STEP (5) +/- 0.155 % +/- 0.008 vol ts High Logarithmic +/- 0.011 % +/- 0.006 vol ts Power Level (2)

High Pressurizer +/- 0.585 psi +/- 0.006 vol ts Pressure Low Pressurizer +/-2.32 ipsi +/- 0.008 vol ts Pressure Low Steam Generator +/- 1.182 psi +/- 0.008 vol ts Pressure Low Steam Generator +/- 0.058 % WR +/- 0.006 vol ts Water Level (9)

High Steam Generator +/- 0.058 % NR . +/- 0.006 vol ts Water Level (9)

High Steam Generator +/- 0.959 psi +/- 0.006 vol ts delta Pressure High Containment +/- 0.035 psi +/- 0.006 vol ts Pressure High-High Containment +/- 0.130 psi +/- 0.006 vol ts Pressure Low Refueling Water +/- 0.146 % +/- 0.006 vol ts Tank Level (11)

SPS - High +/- 2.060 psi +/- 0.008 vol ts Pressurizer Pressure

, Page 16

CEN2862.R0A/622 TABLE 2.9 PLANT PROTECTION SYSTEM CABINET PERIODIC TEST DATA AND VOLTAGES (20,22.23)

PERIODIC FUNCTION ERROR VOLTAGE Variable Overpower (2)

CEILING (3) +/- 0.214 % +/- 0.011 vol ts RATE (4) +/- 0.200 %/ min +/- 0.010 V/ min STEP (5) +/- 0.214 % +/- 0.011 vol ts High Logarithmic +/- 0.015 % +/- 0.008 volts

. Power Level (2)

High Pressurizer +/- 0.832 psi +/- 0.008 vol ts Pressure Low Pressurizer +/- 3.210 psi +/- 0.011 vol ts Pressure Low Steam Generator +/- 1.631 psi +/- 0.011 vol ts Pressure Low Steam Generator +/- 0.083 % WR +/- 0.008 vol ts Water Level (9)

High Steam Generator +/- 0.083 % NR +/- 0.008 vol ts Water Level (9)

High Steam Generator +/- 1.349 psi +/- 0.009 vol ts delta Pressure High Containment +/- 0.050 psi +/- 0.008 vol ts Pressure High-High Containment +/- 0.185 psi +/- 0.008 vol ts Pressure Low Refueling Water +/- 0.208 % +/- 0.008 vol ts Tank Level (11)

SPS - High +/- 2.613 psi +/- 0.010 vol ts Pressurizer Pressure Page 17

['

CEN2862.R0A/684 TABLE 2.10 PLANT PROTECTION SYSTEM MEASUREMENT CHANNEL CALIBRATION DATA AND VOLTAGES (24,25,26)

CALIBRATION FUNCTION ERROR VOLTAGE Variable +/- 2.6 % +/- 0.130 volts Overpower (2)

High Logarithmic + 0.259 % + 0.122 vol ts Power Level (2) - 0.195 % - 0.122 volts High Pressurizer +/- 7.6 psi +/- 0.076 vol ts Pressure Low Pressurizer +/- 28.1 psi +/- 0.094 volts Pressure Low Steam Generator +/- 14.4 psi +/- 0.094 vol ts Pressure Low Steam Generator +/- 1.0 % WR +/- 0.100 vol ts Water Level (9)

High Steam Generator +/- 0.8 % NR +/- 0.080 volts Water Level (9)

High-Steam Generator +/- 14.4 psi +/- 0.094 volts delta Pressure High Containment +/- 0.14 psi +/- 0.023 vol ts Pressure High-High Containment +/- 0.51 psi +/- 0.023 vol ts Pressure Low Refueling Water +/- 0.6 % +/- 0.024 vol ts Tank Level (11)

SPS - High +/- 5.6 psi +/- 0.022 volts Pressurizer Pressure A

Page 18

CEN2862.R0A/746 TABLE 2.11 PLANT PROTECTION SYSTEM MEASUREMENT CHANNEL PERIODIC TEST DATA AND VOLTAGES (24,26,27)

PERIODIC FUNCTION ERROR V0LTAGE Variable +/- 2.8 % +/- 0.140 vol ts Overpower (2)

High Logarithmic + 0.621 % + 0.250 volts Power Level (2) - 0.349 % - 0.250 volts High Pressurizer + 22.2 psi + 0.222 volts Pressure - 52.2 psi - 0.522 volts Low Pressurizer +/- 68.5 psi +/- 0.228 vol ts Pressure Low Steam Generator +/- 34.9 psi +/- 0.229 vol ts Pressure Low Steam Generator +/- 2.3 % WR +/- 0.230 vol ts Water Level (9)

High Steam Generator +/- 2.3 % NR +/- 0.230 vol ts Water Level (9)

High Steam Generator +/- 34.9 psi +/- 0.229 vol ts delta Pressure High Containment + 1.38 psi + 0.230 volts Pressure - 0.99 psi - 0.165 volts High-High Containment + 2.61 psi + 0.117 volts Pressure - 1.18 psi - 0.053 volts Low Refueling Water + 3.6 % + 0.144 vol ts Tank Level (11) - 1.3 % - 0.052 volts SPS - High + 39.7 psi + 0.159 vol ts Pressurizer Pressure - 29.7 psi - 0.119 vol ts Page 19

CEN2862.R0A/808 TABLE NOTES

1. ( <= J implies "less than or equal to" and ( >= ) implies

" greater than or equal to" .

2. Percent of rated thermal power.

3. The maximum value of the trip setpoint.

4. The maximum rate of increase of the trip setpoint.

5. The amount by which the trip setpoint is above the input signal unless limited by the RATE or CEILING.

l

6. Trip may be manually bypassed above 0.0001 % of Rated Thermal Power. Bypass will be automatically removed when Thermal Power is less than or equal to 0.0001 %

of Rated Thermal Power.

7. Setpoint may be decreased manually, to a minimum of 100 psia, as pressurizer pressure is reduced, provided the margin between the pressurizer pressure and the setpoint is maintained at less than or equal to 400 psi. The setpoint will be increased automatically as pressurizer pressure is increased to maintain the margin between pressurizer pressure and the setpoint at less than or equal to 400 psi until the trip setpoint is reached.

Trip may be manually bypassed below 400 psia. Bypass will be automatically removed whenever pressurizer pressure is greater than or equal to 500 psia.

8. Setpoint may be decreased manually as steam generator pressure is reduced, provided the margin between the -

steam generator pressure and the setpoint is maintained at less than or equal to 200 psi . The setpoint will be increased automatically to maintain the margin between steam generator pressure and the setpoint at less than or equal to 200 psi as steam generator pressure is increased until the trip setpoint is reached.

9. Percent of the distance between the steam generator upper and lower level instrument nozzles. ( HR ) means wide range and ( NR ) means narrow wide range.

10. Trip function not required to ensure that the reactor core and reactor coolant system will not exceed their safety limits.

Page 20

CEN2862.R0A/870 TABLE NOTES CONT.

11. Percent of water level instrument span.

12. Time interval from when the monitored paraneter exceeds the trip setpoint value at the input to the channel sensor until electrical power is interrupted to the CEA Dr1ve Mechani sm.

13. Neutron detectors are exempt from Response Time Testing.

Response time will be measured from detector output or from the input of the first electric component in the channel .

14. Time interval from when the monitored parameter exceeds the trip setpoint value at tho input to the channel sensor until the output of the actuation relays in the ESF cabinet change state. The response time provided does not include the actuated components ( e.g. valves, pumps, etc. ) .

15. The response time provided includes the actuated canponents

( e.g. valves, pumps , etc . ) .

16. This voltage is the equivalent of the trip setpoint and should be set into the PPS Cabinet bistable during cal ib ration .

17. This voltage is used to ensure accept able equipment drift between surveillance tests. Tne bistable can change state at this voltage or at a voltage in a conservative direction from it.

18. These values are recommendations based on expected operation and may be changed as necessary. They are not necessary to ensure that the reactor core and reactor coolant system will not exceed their safety limits.

19. Suggested setting below variable setpoint.

20. Tolerances are based on providing the test input at the PPS Cabinet and measuring the value that causes the bistable to change state. There is an offset between the actual trip and the observed value of between + 0.016 volts and - 0.016 volts that is dependent on the process level at the time of measurement and the bistable operating con fig uration. This offset will be determined by the technician at the time of the measurement and is not included in this data.

Page 21

g CEN2862.ROA/932 TABLE NOTES CONT.

21. Calibration data (tolerances) are applicable to the initial calibration of the PPS Cabinet bistable and include an assumed calibration equipment error of +/- 0.005 volts.

22. The tolerances provided are based on calibrating and testing the equipment under the following control room environmental conditions:

Temperature: 65 to 85 degrees Fahrenheit.

Relative Humidity: 40 to 60 percent.

Pressure: Atmospheric .

23. Periodic test data (tolerances) are applicable to the 39-day maximum surveillance interval (channel functional test) of the PPS Cabinet histables.

24. Tolerances are based on providing the test input at the channel sensor and measuring its output to the PPS Cabinet.

25. Calibration data (tolerances) are applicable to the l initial calibration of the measurement channel and include an assumed calibration equipment error of +/- 0.5 percent of span of the device being tested. -

26. The tolerances provided are based on calibrating and

' testing the equipment under the following containment environmental conditions:

Temperature: +/- 10 degrees Fahrenheit of the normal ambient temperature at the installed location.

Relative Humidity: 20 to 90 percent.

Pressure: Atmospheric .

27. Periodic test data (tolerances) are applicable to the 22.5 month maximum surveillance interval of the measurement '

channel.

l Page 22 L

L________________________________________

CEN2863.ROA/002 l

l 3.0 ASSUMPTIONS The following assumptions were made in determining the PPS setpoints and have to be verified by the customer:

3.1 CALIBRATION AND TESTING ENVIRONMENT The tolerances provided are based on calibrating and testing the. equipment under the following environ-mental conditions:

A. Control Room ~

Temperature: 65 to 85 degrees Fahrenheit (dF)

Relative Humidity: 40 to 60 percent Pressure: Atmospheric .

B. Containment Temperature: +/- 10 dF of the ambient temp-erature at the installed location.

Relative Humidity: 20 to 90 percent Pressure: Atmospheric 3.2 CALIBRATION AND TESTING EQUIPMENT A. The equipnent used to calibrate and test the PPS and SPS Cabinets will have an accuracy better than or equal to +/- 0.005 volts.

B. The equipment used to calibrate and test the process instrumentation will have an accuracy better than or equal to +/- 0.5 percent of the span of the device being tested.

C. The PPS Cabinet sel f-test equipment will be used.

3.3 CALIBRATION AND TESTING INTERVAL A. The PPS Cabinet will be calibrated and tested on an interval that does not exceed 39 days.

B. The process instrumentation will be calibrated on an interval that does not exceed 22.5 months.

Page 23

CEN2863.ROA/064 3.4 NUCLEAR INSTRUMENTATION CALIBRATION INTERVAL Will not exceed 3000 hours0.0347 days 0.833 hours 0.00496 weeks 0.00114 months .

3.5 NUCLEAR INSTRUMENTATION CALORIMETRIC CALIBRATION The uncertainty associated with a secondary calori-metric evaluation of the nuclear instrumentation and subsequent process dri ft will not exceed +/- 4.0 %

of full power.

3.6 BARTON TRANSMITTER FIBERGLASS WASHER BACKFIT All Barton Transmitters have been backfit with fiberglass washers to reduce the effects of thermal dri ft, or have been returned to the factory for recompensation .

3.7 CONTAINMENT WIRE CONNECTIONS The error introduced by containment wire connections

, (e.g. terminal blocks , splices, etc.) under accident conditions is less than or equal to + 1.0 percent during the first hour of an accident.

3.8 REFUELING WATER TANK CAPACITY -

A. The Refueling Water Tank shall contain a minimum indicated amount of 485,000 gallons of borated water at all times during normal operation.

B. The calibrated span of the transmitter extends from elevation 94' 10" to the bottom of the overflow line at elevation 154' 2". ,

J 3.9 BISTABLE UNIT DELAY TIMES A. The bistable unit delay time for all PPS trip functions , except Variable Overpower, will be j set between 100 and 110 milliseconds.

! B. The Variable Overpower bistable unit delay time will be set between 40 and 60 milliseconds.

Fage 24

CEN2863.ROA/126 3.10 CONTAIN4ENT PRESSURE VARIATIONS A. Containment pressure variations during normal operation will not exceed +/- 0.5 psi .

B. Containment pressure spikes during maneuvering transients will not exceed 1.2 psi over ambient press ure .

From NUREG-0737,Section II.E.4.2.

"The containment pressure history during normal operation should be used as a basis for arriving at an appropriate minimum pressure setpoint for initiating containment isolation. ... Applicants for an operating license and operating plant licensees that have operated less than one year should use pressure history data from similar plants that have operated for more than one year..."

3.11 PPS CABINET GENERIC CALIBRATION DISCREPANCY The required offset between the actual trip setpoint and the d> served value will be utilized for all calibration and periodic testing'of all PPS Cabinet Trip Functions.

Page 25

CEN2863.ROA/188 THE FOLLOWING ASSUMPTIONS DO NOT NEED TO BE VERIFIED BY THE CUSTOMER i 3.12 That accident condition errors for the feedwater line i break event are no worse than accident condition l errors for the main steam line break event.

l 3.13 The PPS Cabinet response time for the Variable Over-

[ power trip is less than or equal to 97 milliseconds.

The response time for all other trip functions is less than or equal to 150 milliseconds. These response times envelope the delay times in Assunption 3.9.

l 3.14 That combination of instrument uncertainties from various sources by the root-sum-square method is realistic and conservative enough when these uncert-ainties are independent of each other.

3.15 That combination of instruwent uncertainties frcr various sources by algebraic summation is the most conservative method whenever the errors are non-random.

NOTE:

1 Random errors ( errors of uncertain algebraic sign )

are indicated by the upper case letters A, B, C, ..

l

... N. When encountered in the analysis, these errors are combined by the RSS technique, denoted by RSS( A, B, C, ...... N ).

Non-random errors ( errors of known algebraic sign )

are indicated by the upper case letters A', B', C',

.... N'. When encountered in the analysis, these errors are added algebraically.

Errors may have both random and non-random can ponents . When this occurs, the notation A+A',

B+B ' , C+C ' , . . . . . N+N ' i s used to ind ic ate the combination of the two error types.

Calibration Equipment Uncertainty is taken twice in the calculation of periodic test error because it must be reapplied at the end of the test interval .

i Page 26 l

l l

L

CEN286A.ROA/002 4.1 CALCULATION OF VARIABLE OVERPOWER TRIP I. ANALYSIS VALUES A. Analysis Setpoints CEILING (1): 117.0 % Power (2): 116.0 % Power RATE (1): 11.0 %/ min.

STEP (1): 10.0 % Power B. Sensor Delay Time (1,2): 0.600 sec.

C. Signal Delay Time (1,2): 0.550 sec .

TOTAL ANALYSIS RESPONSE TIME B + C = 1.15 sec. (For RPS Tech. Spec. Use)

II. PPS CABINET UNCERTAINTIES Instrument Range: 0 to 200 % Power Voltage Range: 0 to 10 volts Conversion Factor: 20 % Power / volt Conversion Equations: %P = 20V V = %P/20 A. Cal . Equip. Unc. (3): +/- 0.100 % Power B. Equipment Accuracy (4): +/- 0.119 % Power C. Bistable Drift (5): +/- 0.075 % Power

.D. Tenperature Effects

1. Ambient (6): +/- 0.078 % Power

2. Worst Case Normal (6): +/- 0.312 % Power CALIBRATION ERROR RSS( A,B ) = +/- 0.155 % Power PERIODIC TEST ERROR RSS( A,A,B,C,01 ) = +/- 0.214 % Power WORST CASE NORMAL ERROR

RSS( A,B,C,02 ) = +/- 0.357 % Power Page 27

CEN286A.ROA/064 III. PROCESS EQUIPMENT UNCERTAINTIES E. Cal . Equip. Unc.: +/- 1.0 % Power F. CPC Calibration Error (7): +/- 0.2 % Power G. CPC Long Tenn Drift (7,8): +/- 0.6 % Power H. CPC Temperature Effects

1. Ambient (7): +/- 0.5 % Power

2. Worst Case Normal (7): +/- 1.0 % Power I. Detector Non-linearity: +/- 2.0 % Power J. Power Signal Accuracy

1. Ambient (9): +/- 1.0 i Power

2. Worst Case Normal (9): +/- 2.0 4 Power K. Power Signal Linearity

1. Ambient (9): +/* 0.1 % Power

2. Worst Case Normal (9): +/- 0.2 % Power CALIBRATION ERROR RSS( E,F,G H1,I,J1,K1 ) = +/- 2.581 % Power

= +/- 2.6 % Power PERIODIC TEST ERROR RSS( E.E,F,G,H1,1,J1,K1 ) = +/- 2.768 % Power

= +/- 2.8 % Power WORST CASE NORMAL / ACCIDENT ERROR RSS( E,F,G,H2,I,J2,K2 ) = +/- 3.231 %- Power IV. TOTAL CHANNEL ERROR Combine:

A. PPS Cabinet W.C.N. Error: +/- 0.357 % Power B. Process Equipment W.C.N. Error: +/- 3.231 % Power C. Calorimetric Unc. (10): +/- 4.000 % Power RSS( A,B,C ) = +/- 5.154 %' Power

= +/- 5.2 % Power Page 28

I CEN286A.R0A/126 V. SETPOINTS, ALLOWABLE VALUES, PRETRIP 0FFSET

1. CEILING:

Setpoint = Analysis Setpoint - Total Channel Error

= 116.0 % Power - 5.2 % Power

= 110.8 % Power Allowable Value = Setpoint + PPS Cabinet PTE

= 110.8 % Power + 0.214 % Power

= 111.0 % Power To reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from the calculated Allow- i able Value by 0.5 % of Span. Based on a span of 200 %

Power, the offset is 1.0 % Power and the new Trip Setpoint becomes 110.0 % Power.

Pretrip Offset = - 6.0 % Power (12)

2. RATE:

Setpoint = Analysis Setpoint - PPS Cabinet Clock Error

= 11.0 % Power / min - 0.4 % Power / min

= 10.6 % Power / min (11)

Allowable Value = Setpoint + PPS Cabinet Clock Error

= 10.6 % Power / min + 0.4 % Power / min

= 11.0 % Power / min (11)

Page 29 w._---.-__- - _ _ - _ _ - _ - _ . . . . - - . - - _ . . . - -

CEN286A.R0A/188 V. ' SETPOINTS, ALLOWABLE. VALUES, PRETRIP 0FFSET (cont.)

3. STEP:

Setpoint = Analysis Setpoint - PPS Cabinet PTE

= 10.0 % Power - 0.214 % Power

= 9.8 % Power Allowable Value = Trip Setpoint + PPS Cabinet PTE

= 9.8 % Power + 0.2 % Power

= 10.0 % Power VI. VOLTAGE EQUIVALENTS FOR V. '

The PPS Cabinet input ranges from 0 to 10 volts. Thi s i s equivalent to a process range of 0 to 200 % Power. Based on these endpoints the following linear conversion equations can be derived:

V = ( %P )/20 Based on this, the following data can be calculated:

Val ue Voltage CEILING:

Setpoint 110.0 % Power 5.500 volts Allowable Value 111.0 % Power 5.550 volts Pretrip Offset (12) - 6.0 % Power - 0.300 volts RATE: t Setpoint 10.6 % Power / min 0.530 V/ min Allowable Value 11.0 % Power / min 0.550 V/ min STEP:

Setpoint 9.8 % Power 0.490 vol ts Allowable Value 10.0 % Power 0.500 volts

, Cabinet Calib . (13) +/- 0.155 % Power +/- 0.008 vol ts l RATE Calib. (11,14) +/- 0.106 %/ min +/- 0.005 volts / min j Cabinet PTE (13) +/- 0.214 % Power +/- 0.011 vol ts i RATE PTE (11,14) +/- 0.200 %/ min +/- 0.010 volts / min Proc. Equip. Calib.

+/- 2.6 % Power +/- 0.130 vol ts Proc. Equip. PTE +/- 2.8 % Power +/- 0.140 vol ts i Page 30

CEN286A.ROA/250 VII. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.001 sec.

B. PPS Cabinet ( RPS ): 0.097 sec.

C. Reactor Trip Switch Gear: 0.100 sec.

TOTAL CHANNEL RESPONSE TIME A + B + C = 0.198 sec. ( For RPS )

The actual RPS channel delay time is less than the 1.15 second RPS Tech. Spec. Response Time.

( CALCULATION NOTES:

1. For CEA Ejection.

2. For Feedwater Line Break and Steam Line Break.

3. Based on an assumed Calibration Equipment accuracy of

+/- 0.005 vol ts.

4. Based on a PPS Cabinet accuracy of +/- 0.00593 vol ts.

5. For a 39 day period. Based on a 30 day drift of 0.00289 volts linearly extrapolated to 39 days."

6. Worst Case Normal errors were based on a +/- 50 degree Fahrenheit shift producing a +/- 0.0156 volt change. One fourth of this was used to determine ambient tenperature e f fects .

7. The linear power signal is adjusted, once per shift, to match the excore power calculated by the Core Protection Calculators ( CPCs ) . Accordingly, errors in the CPC system will be reflected in the linear power system.

Worst case error applies to a 55 to 135 degree Fahrenheit range. One half of this was used to determine ambient temperature effects.

8. For 3000 hours0.0347 days 0.833 hours 0.00496 weeks 0.00114 months of continuous operation.

Page 31

CEN286A.R0A/312 CALCULATION NOTES CONT.:

9. A normal operating error is not defined for this equipment.

Error is defined over the worst case of environmental conditions. The equipment is specified such that its error will not exceed the worst case normal ( W.C.N. )

error during any condition, including accidents. Worst case error applies to a 55 to 135 degree Fahrenheit range.

One half of this was used to determine ambient temperature e f fects .

10. Reflects the uncertainty assumed (Section 3.5) in performing a secondary calorimetric evaluation of the detector.-

11. The PPS Cabinet clock specification is +/- 1.0-% of the installed rate. The use of 0.4 % Power / min. is based an engineering judgenent and is conservative. The clock specification was used for the PPS Cabinet calibration error. Approximately twice this was chosen as a PPS Cabinet periodic test error.

12. Sugge ,ted setting below variable setpoint.

13. These apply to both the CEILING and the STEP.

14. The RATE is verified by measuring the time lapse while the setpoint traverses a test voltage increment. The errors in this test voltage were ignored. Consequently, the calibration and periodic test entries are narrower than need be and are conservative.

6 Page 32 d

- _ _ = . _ . _ . _ - . - _ - . - - - - .

CEN286A.R0A/374 4.2 CALCULATION OF HIGH LOGARITHMIC POWER LEVEL TRIP E

I. ANALYSIS VALUES l

A. Analysis Setpoint ('.): 2.0 % Power B. RPS Signal Delay Time (1): 0.550 sec.

TOTAL ANALYSIS RESPONSE TIME B = 0. 55 sec . ( For RPS Tech. Spec. Use )

4

. II. PPS CABINET UNCERTAINTIES Instrument Range (2): 2.0E-08 to 200 % Power Voltage Range: 0 to 10 volts Conversion Factor (3): % P = 2.0E(V-8)

A. Cal . Equip. Unc.: +/- 0.005 vol ts B. Equipment Accuracy: +/- 0.00303 volts

, C. 31 stable Drift (4): +/- 0.00229 vol ts

! D. Temperature Effect

, 1. Ambient (5): +/- 0.00219 volts

2. Worst Case Nonnal (5): +/- 0.00877 volts l CALIBRATION ERROR i

i RSS( A,B ) = +/- 0.006 volts l

l PERIODIC TEST ERROR l RSS( A. A,8,C,01 ) = +/- 0.008 volts ;

! WORST CASE NORMAL ERROR

! RSS( A,B,C,02 ) = +/- 0.011 volts h

!!!. PROCFSS EQUIPMENT UNCERTAINTIES l E. Cal . Equip. Unc.: +/- 0.050 volts F. Detector Non-linearity (6): +/- 0.100 vol ts G. Electronic Cal. Error (7): +/- 0.050 vol ts ,

i H. Long Term Drift (8): +/- 0.150 vol ts I. Temperature Ef fects

1. Ambient (9): +/- 0.150 vol ts

! 2. Worst Case Normal (10): +/- 0.300 vol ts f

Page 33 I

CEN286A.R0A/436 III. M10 CESS EQUIPMENT UNCERTAINTIES CONT.

CALIBRATION ERROR RSS( E.F G ) = +/- 0.122 volts .

PERIODIC TEST ERROR RSS( E,E,F,G.H. Il ) = +/- 0.250 vol ts WORST CASE NORMAL ERROR RSS( E,F,G.H,12 ) = +/- 0.357 volts IV. TOTAL CHANNEL ERROR Combine:

A. PPS Cabinet W.C.N Error: +/- 0.011 vol ts B. Process Equipment W.C.N. Error: +/- 0.357 volts RSS( A,8 ) = +/- 0.357 volts V. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETP0 INT Using the equation, %P = 2.GE(V-8), the Analysis Setpoint of 2.0 % Power produces an input to the PPS Cabinet of 8.0 vol ts.

Trip Setpoint = Analysis Setpoint - Total Channel Error

= S.000 volts - 0.357 volts

= 7.643 vol ts Allowable Value = Trip Setpoint + PPS Cabinet PTE

= 7.643 vol ts + 0.008 vol ts

= 7.651 volts To reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from the Allowable Value by 0.5 % of Span. Based on a Span of 10 volts, the offset is 0.050 volts and the new Trip Setpoint becomes 7.601 vol ts .

Page 34

I CEN286A.ROA/498 l

V. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETPOINT (cont.)

The Pretrip Setpoint is set at 0.001 % Power based on engineering judgement.

Pretrip Setpoint = 8 + log ( %P ) - log 2

= 8 + (-3 ) - 0.3010

= 4.699 volts VI. POWER EQUIVALENTS OF V.

Solving the equation %P = 2.0E(V-8) for % Power results in the following data:

Vol tage log %P % Power Trip Setpoint 7.601 volts - 0.098 0.798 %

Allowable Value 7.651 volts - 0.048 0.895 %

Pretrip Setpoint 4.699 volts - 3.000 0.001 %

Trip + 0.006 7.607 vol ts - 0.092 0.809 %

Trip - 0.006 7.595 volts - 0.104 0.787 %

Trip + 0.008 7.609 vol ts - 0.090 0.813 %

Trip - 0.008 7.593 volts - 0.106 0.783 %

Trip + 0.122 7.723 volts + 0.024 1.057 %'

Tri p - 0.122 7.479 volts - 0.220 0.603 %

Trip + 0.250 7.851 vol ts + 0.152 1.419 %

Tri p - 0.250 7.351 volts - 0.348 0.449 %

PPS Cabinet 0.809 % - 0.798 % = + 0.011 % Power Calibration Unc 0.787 % - 0.798 % = - 0.011 % Power PPS Cabinet 0.813 % - 0.798 % = + 0.015 % Power Periodic Test Unc 0.783 % - 0.798 % = - 0.015 % Power Process Equipment 1.057 % - 0.798 % = + 0.259 % Power Calibration Unc 0.603 % - 0.798 % = - 0.195 % Power Process Equipment 1.419 % - 0.798 % = + 0.621 % Power Periodic Test Unc 0.449 % - 0.798 % = - 0.349 % Power l

Page 35

CEN286A.R0A/560 l

VII. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment (11): 0.075 sec.

B. PPS Cabinet ( RPS ): 0.130 sec.

C. Reactor Trip Switch Gear: 0.100 sec.

TOTAL CHANNEL RESPONSE TIME A + B + C = 0.325 seconds The actual RPS channel delay time is less than the 0.55 second RPS Tech. Spec. Response Time.

l l

Page 36

1 CEN286A.R0A/622 CALCULATION NOTES:

1. For CEA Ejection, Feedwater Line Break and Steam Line Break. Signal Delay Time includes opening of Reactor Trip Switchgear.

l

2. The notation 2.0E-08 means 2.0 times 10 raised to the minus 8 power.

3. The notation 2.0E(V-8) means 2.0 times 10 raised to the (V-8) power where V equals the input voltage.

4. For a 39 day period. Based on a 30 day drift of

+/- 0.00176 volts linearly extrapolated to 39 days.

, 5. Worst Case Normal errors were based on a +/- 50 degree Fahrenheit shi ft. One fourth of this was used to detennine ambient temperature effects.

6. Based on a detector non-linearity of +/- 1.01, of equivalent linear full scale output and an output signal range of 0 to 10 volts.

7. Based on an electronic calibration error of +/- 0.5 % of equivalent linear full scale output and an output signal range of 0 to 10 volts.

8. For 3000 hours0.0347 days 0.833 hours 0.00496 weeks 0.00114 months of continuous operation. Based on a maximum expected drift of +/- 0.5 % of equivalent linear full scale output and an output signal range of 0 to 10 volts.

9. A normal operating error is not defined for this equip-ment. Error is defined over the worst case of environ-mental conditions. The equipment is spect fied such that !

its error will not exceed the Worst Case Normal ( W.C.N. ) !

error during any condition, including accidents. One half of this was used to determine ambient temperature effects.

10. Based on a 55 to 135 degree Fahrenheit range worst case aperating error of +/- 3.0 % of equivalent linear full scale output and an out.put signal range of 0 to 10 volts.

11. The Response Time was chosen as the maximum value in the range of operations.

Page 37

CEN286A.ROA/684 4.3 CALCULATION OF HIGH PRESSURIZER PRESSURE TRIP I. ANALYSIS VALUES A. Analysis Setpoint (1): 2450 psia (2): 2475 psia B. Sensor Response Time (1,2): 0.600 sec.

C. RPS Signal Delay Time (1,2): 0.550 sec.

TOTAL ANALYSIS RESPONSE TIME B + C = 1.15 Seconds (For RPS Tech. Spec. Use)

!!. PPS CABINET UNCERTAINTIES Instrument Range: 1500 to 2500 psia 0 to 10 volts Voltage Range:

Conversion Factor: 100 psi / volt Conversion Equations: P = 100V + 1500 V = ( P-1500 )/100 A. Cal . Eouip. Unc. (3): +/- 0.500 psi B. Equipment Accuracy (4): +/- 0.303 psi C. Bistable Dri ft (5): +/- 0.229 psi D. Temperature Effects *

1. At itnt (6): +/- 0.219 psi

2. Worst Case Normal (6): +/- 0.877 psi CAllBRATION ERROR RSS( A,B ) = +/- 0.585 psi PERIODIC TEST ERROR RSS( A. A,8,C,01 ) = +/- 0.832 psi WORST CASE f0RMAL ERROR RSS( A,B,C,02 ) = +/- 1.079 psi Page 38 -

l

=

CEN286A.ROA/746 111. PROCESS INSTRUMENTATION ERRORS E. Cal . Equip. Unc.: +/- 5.0 psi F. Barton 763 Accuracy: +/- 5.0 psi G. Foxboro I/E Accuracy: +/- 2.5 psi H. Dropping Resistor Error: +/- 0.1 psi I. Foxboro 1/E Tenperature Effects

1. Ambient (7): +/- 1.0 psi

2. Worst Case Normal (11): +/- 4.0 psi J. Barton 763 Temperature Effects

1. Ambient (8): +/- 5.0 psi

2. Worst Case Normal (8): +/- 10.0 psi

3. Accident Conditions (13): +/- 46.8 psi K. Barton 763 Radiation Errors

1. Normal Operating (9): +/- 5.0 psi .

2. Accident Conditions (14): +/- 30.0 psi L. Barton 763 Drift (10): +/- 18.9 psi M. Barton 763 Seismic Errors

1. During Event: +/- 20.0 psi

2. After Event: +/- 10.0 psi N. Foxboro 1/E Seismic Error (12): +/- 5.0 psi

0. Terminal Block Accident Error: + 10.0 psi P. Elevated Range Effect (15): - 30.0 psi CALIBRATION ERROR RSS( E.F G,H ) = +/- 7.501 psi *

= +/- 7.6 psi PERIODIC TEST ERROR RSS( E E.F,G H. II,J1,K1.L ) + P ' = +/- 22.124 + 0.0 psi

- 30.0 psi

= + 22.2 psi

= - 52.2 psi WORST CASE NORMAL (NON-ACCIDENT) ERROR w/ SEISMIC (16)

RSS( E.F G,H,12 J2,K1,L,M1,N ) + P ' = +/- 31.296 + 0.0 psi

- 30.0 psi WORST CASE ACCIDENT ERROR (16)

RSS( E.F,G,H,12,J2,J3,K1,L,M1,N ) + 0 ' + P ' =

+/- 56.300 + 10.0 psi ,

- 30.0 psi '

Page 39

CEN286A.ROA/808 i

IV. TOTAL CHANNEL WORST CASE NORMAL ERROR w/ SEISMIC (16)

Conbine:

A. PPS Cabinet W.C.N. Error: +/- 1.079 psi B. PE Worst Case Normal Error: +/- 31.2% - 30.0 pst RSS( A,8 ) + B ' = +/- 31.315 + 0.0 psi

- 30.0 psi

= + 32 psi

= - 62 psi V. TOTAL CHAf:NEL ACCIDENT ERROR (270 degrees Fahrenheit)

Combine:

A. PPS Cabinet W.C.N. Error: +/- 1.079 psi B. PE Worst Case Accident Error: +/- 56.300 + 10.0 psi

- 30.0 psi

{

RSS( A,B ) + B' = +/- 56.310 + 10.0 psi

- 30.0 psi l = + 67 psi l

= - 87 psi l VI. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETPOINT (I-1) (IV)

! Trip Setpoint = Analysis Setpoint - Total Channel Error

= 2450 psia - 62 psi

= 2388 psia (17)

(I-2 ) (V )

Trip Se+ point = Analysis Setpoint - Total Channel Error

= 2475 psia - 87 psi

= 2388 psia (17)

Allowable Value = Trip Setpoint + PPS Cabinet PTE i

= 2388 psia + 0.832 psi '

= 2388 psia To reduce the possiblity of a Licensee Event Repc>rt, the Trip Setpoint is offset from the calculated Allowable Value by 0.5 % of Span. Based on a Span of 1000 psi, the offset is 5.0 psi, and the new Trip Setpoint becomes 2383 psi a ,

j Page 40 l

CEN286A.ROA/870 VI. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETP0 INT (cont.) l l

l The Pretrip Setpoint is set at 2359 psia based on :

engineering judgenent.

l VII. VOLTAGE EQUIVALENTS FOR VI.

l The PPS Cabinet input ranges from 0 to 10 volts. This is equivalent to a process range of 1500 to 2500 psia. Based on these endpoints the following linear conversion equations can be derived: ,

V = -( P-1500 )/100 l 1

Based on this, the following data can be calculated:

I Val ue Voltage

, Trip Setpoint 2383 psia 8.830 volts l Allowable Value 2388 psia 8.880 volts l

Pretrip Setpoint 2359 psia 8.590 volts l

Cabinet Calib. +/- 0.585 psi +/- 0.006 vol ts Cabinet PTE +/- 0.832 psi +/- 0.008 vol ts Proc. Equip. Calib . +/- 7.6 osi +/- 0.076 volts I Proc. Equip. PTE + 22.2 psi + 0.222 volts

- 52.2 psi - 0.522 vol ts o

VI!!. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.180 sec.

B. Foxboro 1/E Converter: 0.050 sec.

C. PPS Cabinet ( RPS ): 0.130 sec.

Reactor Trip Switch Gear:

j D. 0.100 sec. t TOTAL CHANNEL RESPONSE TIME A + B + C + 0 = 0.480 sec. ( For RPS )

! The actual RPS channel delay time is less than the '

l 1.15 second RPS Tech. Spec. Response Time.

l l

f' l

Page 41

CEN286A.R0A/932 CALCULATION NOTES:

1. For loss of Load, Loss of Condensor Vacuum, and Main Steam Isolation Valve closure.

2. For Feedwater Line Break and for Steam Line Break.

3. Based on an asstaned Calibration Equipment accuracy of

+/- 0.005 vol ts.

4. Based on a PPS Cabinet accuracy of +/- 0.00303 vol ts.

5. For a 39 day period. Based on a maximtsn expected drift of +/- 0.00176 volts over 30 days linearly extrapolated to 39 days.

6. Worst Case Normal errors were based on a +/- 50 degree Fahrenheit shift producing a +/- 0.00877 volt change. One fourth of this was used to determine ambient temperature e f fects .

7. For +/- 10 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

8. Worst case normal error for an 80-130 degree Fahrenheit range. One half of this was used to detemine ambient temperature effects.

9. Background radiation for a 40 year period and a total dose not exceeding 10 million Rads.

10. For a 22.5 month period and normal environment.

11. For a +/- 40 degree Fahrenheit change within a 40-120 degree Fahreheit range.

12. Uncertainty during the event. Uncertainty after the event was not stated.

13. For a 270 degree Fahrenheit environment. The High Contain-ment Pressure trip function at 6.0 psig will limit the containment environment to this temperature prior to reactor trip.

14. Based on a 40 million Rad dose. This error was not used because High Pressurizer Pressure is not credited for events releasir,9 significant amounts of radiation.

Page 42

CEN286A.ROA/994 CALCULATION NOTES (cont.):

15. Transmitter defect resulting in a negative shift in the output during initial exposure to operating pressure.

The amount of the shift is dependant on the process l

pressure and the calibrated span of the transmitter, l

and can occur at any time. Arizona intends to return these transmitters to Barton for repair. Once repairs have been completed the - 30 psi offset can be removed to permit additional operatin space.

16. All equipment is required to function during and after a seismic event.

l 17. The same trip setpoint satisfies both Safety Analysis requirements .

1 i

I i

f k

I l

Page 43

, q. , "{ ,

,3 \ (

~

'CEN286A.ROA/1056 4.4 CALCULATION OF LOW PRESSURIZER PRESSURE ' TRIP

'h s s 6 I. ANALYSIS VALUES A. Analysis Setpoirt.(1): 1785 psia

, , , (2): 1600 psia

, 7, (3): 1580 psia B. Sensor Response Time ~(4): 0.600 sec.

C. RPS Signal Delay Time (4): 0.550 sec.

D. ESFAS Signal Delay Time (4): 0.550 sec .

.s TOTAL ANALYSIS RESPONSE TI'ME B + C = 1.15 sec. (For RPS ~ Tech. Spec. Use)

B + 0 = 1.15 sec. (For ESFAS Tech. Spec. Use)

II. PPS CABINET UNCERTAINTIES Instrument Range: 0 to 3000 psia Voltage Range: 0 to 10 volts Conversion Factor: 300 psi / volt P = 300V V = P/300 A. Cal . Equip. Unc. (5 ): +/- 1.500 psi B. Equipment Accuracy (6): +/- 1.779 psi C. Bistable Dri ft (7): +/- 1.127 psi D. Temperature Effect

1. - Ambient (8): +/- 1.170 psi

2. Worst Case Normal (8): +/- 4.680 psi CALIBRATION ERROR RSS( A,B ) = +/- 2.327 psi PERIODIC TEST ERROR

.RSS( A, A,B,C,D1 ) = +/- 3.210 psi WORST CASE NORMAL ERROR RSS( A,B,C,02 ) = ~+/- 5.347 psi

)

Page 44

CEN286A.R0A/1118 III. PROCESS EQUIPMENT UNCERTAINTIES E. Cal. Equip. Unc.: +/- 15.0 psi F. Barton 763 Accuracy: +/- 15.0 psi G. Foxboro I/E Accuracy (9): +/- 10.6 psi H._ Foxboro E/I Accuracy: +/- 15.0 psi I. Dropping Resistor Error: +/- 0.3 psi J. Foxboro I/E Temperature Effects

1. Ambient (10): +/- 4.2 psi

2. Worst Case Normal (14): +/- 17.0 psi K. Foxboro E/I Temperature Effects

1. Ambient (10): +/- 3.0 psi

2. Worst Case Normal (14): +/- 12.0 psi L. Barton 763 Temperature Effects

1. Ambient (11): +/- 15.0 psi

2. Worst Case Normal (11): +/- 30.0 psi

3. Accident Conditions (16): +/- 140.5 psi M. Barton 763 Radiation Errors

1. Normal Operation (12): +/- 15.0 psi

2. Accident Conditions (17): +/- 90.0 psi N. Barton 763 Dri ft (13): +/- 56.5 psi

0. Barton 763 Seismic Errors

1. During Event: +/- 60.0 psi

2. After Event: +/- 30.0 psi P. Foxboro I/E Seismic Error (15): +/- 21.2 psi Q. Foxboro E/I Seismic Error (15): +/- 15.0 psi R. Terminal Block Accident Error: + 30.0 psi CALIBRATION ERROR RSS( E,F,G,H,I ) = +/- 28.062 psi

= +/- 28.1 psi PERIOUIC TEST ERROR RSS( E,E,F,G,H,I,J1,K1,L1,M1,N ) = +/- 68.420 psi

= +/- 68.5 psi WORST ~ CASE NORMAL (NON-ACCIDENT) ERROR w/ SEISMIC (18)

RSS( E,F,G,H,I,J2,K2,L2,M1,N,01,P,Q ) = +/- 99.073 psi WORST CASE ACCIDENT ERROR (18)

RSS( E, F,G,H, I,J2,K2, L2, L3,M1,M2,N,01,P,Q ) + R ' =

+/- 194.051 + 30.0 psi

- 0.0 psi Page 45 CEN286A.ROA/1180 IV. TOTAL CHANNEL WORST CASE NORMAL ERROR w/ SEISMIC (18)

Combine:

A. PPS Cabinet W.C.N. Error: +/- 5.347 psi B. PE Worst Case Normal Error: +/- 99.073 psi RSS( A,B ) = +/- 99.217 psi

= +/- 100 psi V. TOTAL CHANNEL ACCIDENT ERROR (270 DEGREES FAHRENHEIT) s COMBINE:

A. PPS' Cabinet W.C.N. Error: +/- 5.347 psi B. PE Worst Case Accident Error: +/- 194.051 + 30.0 psi RSS( A,8 ) + B ' = +/- 194.125 + 30.0 psi

- 0.0 psi

= + 225 psi

= - 195 psi VI. TRIP SETP0 INT, ALLOWABLE VALUE, PRETRIP SETPOINT (I-2 ) (V)

Trip Setpoint = Analysis Setpoint + Total Channel Error

= 1600 psia + 225 psi

= 1825 psia Allowable Value = Trip Setpoint - PPS Cabinet PTE

= 1825 psia - 3.210 psi

= 1822 psia To reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from the calculated Allowable Value by 0.5 % of Span. Based on a Span of 3000 psi, the offset is 15.0 psi, and the new Trip Setpoint becomes 1837 psia.

The Pretrip Setpoint is set at 1880 psia based on engineering judgement.

Protection for the Steam Generator Tube Rupture Event

( Analysis Setpoint of 1785 psia) has been provided by the Core Protection Calculators. See Note 1 for additional in fonnation.

Page 46

. . . = - - .- . __. -- - - . - . . - .

~

r CEN286A.ROA/1242 VII. V0LTAGE EQUIVALENTS FOR VI.

The PPS Cabinet input ranges from 0 to 10 volts. Thi s i s equivalent to a process range of 0 to 3000 psia. Based on these endpoints the following linear conversion equations can be derived:

V = P/300 Based on this, the following data can be calculated:

Val ue Voltage Trip Setpoint 1837 psia 6.123 volts Allowable Value 1822 psia 6.073 volts Pretrip Setpoint '1880 psia 6.267 volts Cabinet Calib . +/- 2.327 psi +/- 0.008 vol ts Cabinet PTE +/- 3.210 psi +/- 0.011 vol ts Proc. Equi p. Cal ib . +/- 28.1 psi +/- 0.094 vol ts Proc. Equip. PTE +/- 68.5 psi +/- 0.228 vol ts VIII. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.180 sec.

B. Foxboro I/E Converters: 0.100 sec.

C. Foxboro E/I Converter: 0.080 sec .

D. PPS Cabinet ( RPS ): 0.150 sec.

E. PPS Cabinet ( ESFAS ): 0.150 s ec .

F. Reactor Trip Switch Gear: 0.100 sec.

G. ESFAS Cabinet Delay Time: 0.300 sec . -

TOTAL CHANNEL RESPONSE TIME A + B + C + D + F = 0.610 sec. ( For RPS )

A + B + C + E + G = 0.810 sec. ( For ESFAS )

The actual RPS channel delay time is less than the 1.15 second RPS Tech. Spec. Response Time.

The actual ESFAS channel delay time is less than the 1.15 second ESFAS Analysis Response Time.

Page 47

CEN286A.ROA/1304 CALCULATION NOTES:

1. For Steam Generator Tube Rupture. Protection for this non-environmental event is provided by the Core Protection Cal cul ators (CPC 's) . The CPC operating space for Pressurizer Pressure ranges from 1785 to 2415 psia. Operation outside of this space will cause the CPC's to trip the reactor. Thi s operating space has been reduced to 1861 psi on the lower side by a total CPC channel error of 76 psi . This guarantees a reactor trip before the 1785 psia Analysis Setpoint is reached.

2. For Large and Small Break LOCA, Feedwater Line Break and Steam Line Break. Initiates a Reactor Trip, CCAS, CSAS and SIAS.

3. For CEA Ejection. Initiates CIAS and SIAS.

4. Applies for all events. For ESFAS applications , signal response time includes sensor input through actuation rel ays .

5. Based on an assumed Calibration Equipment accuracy of

+/- 0.005 vol ts .

6. Based on a PPS Cabinet accuracy of +/- 0.00593 vol ts.

7. For a 39 day period. Based on a maximum expected drift of +/- 0.00289 volts over 30 days linearly extrapolated to 39 days.

8. Worst Case Normal errors were based on a +/- 50 degree Fahreheit shi ft producing a +/- 0.0156 volt change. One fourth of this was used to determine Ambient Temperature e f fects .

9. Channel B Contains two Foxboro current to voltage

, conversion cards. The error shown reflects the canbined effect of both. This approach has also been used to dete'rmine ambient temperature effects, worst case normal errors and seismic errors.

10. For +/- 10 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

11. Worst case normal error for an 80-130 degree Fahrenheit range. One half of this was used to determine ambient temperature effects.

12. Background radiation for a 40 year period and a total dose not exceeding 10 million Rads.

Page 48

CEN286A.ROA/1366 CALCULATION NOTES (cont.):

13. For a 22.5 month period and normal environment.

14. For a +/- 40 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

15. Uncertainty during the event. Uncertainty after the event was not stated.

16. For a 270 degree Fahrenheit environment. The High Contain-ment Pressure trip function at 6.0 psig will limit the containment enviromnent to this temperature prior to reactor trip.

17. Based on a 40 million Rad dose.

18. All equipment is required to function during and after a seismic event.

Page 49 y -,- . .-- - --4-- --, = .y. , - ,,., r w- ,. ., - --e-- -- ,

CEN286B.R0A/002 4.5 CALCULATION OF LOW STEAM GENERATOR PRESSURE TRIP I. ANALYSIS VALUES A. Analysis Setpoint (1): 820 psia (2): 810 psia

8. Sensor Response Time (1,2): 0.600 sec.

C. RPS Signal Time (1,2): 0.550 sec.

D. ESFAS Signal Delay Time (3): 0.550 sec.

TOTAL ANALYSIS RESPONSE TIME B + C = 1.15 sec. ( For RPS Tech. Spec. Use )

B + 0 = 1.15 sec. ( For ESFAS Tech. Spec. Use )

II. PPS CABINET UNCERTAINTIES Instrument Range: 0 to 1524 psia Voltage Range: 0 to 10 volts Conversion Factor: 152.4 psi / volt Conversion Equations: P = 52.4V V = P/152.4 A. Cal . Equip. Unc. (4): +/- 0.762 psi B. Equipment Accuracy (5): +/- 0.904 psi C. Bistable Drift (6): +/- 0.573 psi D. Tenperature Effect

1. Ambient (7): +/- 0.594 psi

2. Worst Case Normal (7): +/- 2.377 psi CALIBRATION ERROR -

RSS( A,B' ) = +/- 1.182 psi PERIODIC TEST ERROR RSS( A, A,B,C,01 ) = +/ ' 1.631 psi WORST CASE NORMAL ERROR-RSS( A,B,C,02 ) = +/- 2.716 psi Page 50

CEN286B.ROA/064

\

III. PROCESS EQUIPMENT UNCERTAINTIES E. Cal . Equip. Unc.: +/- 7.7 psi F. Barton 763 Accuracy: +/- 7.7 psi G. Foxboro I/E Accuracy (8): +/- 5.4 psi H. Foxboro E/I Accuracy: +/- 7.7 psi I. Dropping Resistor Error: .

+/- 0.2 psi J. .Foxboro I/E Temperature Effects

1. Ambient (9): +/- 2.2 psi

2. Worst Case Normal (13): +/- 8.7 psi K. Foxboro E/I Tenperature Effects

1. Ambient (9): +/- 1.6 psi

2. Worst Case Normal (13): +/- 6.1 psi L. Barton 763 Temperature Effects

1. Ambient (10): +/- 7.7 psi

2. Worst Case Normal (10): +/- 15.3 psi

3. Accident Conditions (15): +/- 71.4 psi M. Barton 763 Radiation Errors

1. Nonnal Operation (11): +/- 7.7 psi

2. Accident Conditions (16): +/- 45.8 psi N. Barton 763 Drift (12): +/- 28.7 psi

0. Barton 763 Seismic Errors

1. During Event: +/- 30.5 psi

2. After Event: +/- 15.3 psi P. Foxboro I/E Seismic Error (14): +/- 10.8 psi Q. Foxboro E/I Seismic Error (14): +/- 7.7 psi R. Terminal Block Accident Error: + 15.3 psi CALIBRATION ERROR

RSS( E,F,G,H,I ) = +/- 14.390 psi

= +/- 14.4 psi PERIODIC TEST ERROR RSS( E,E,F,G,H,1,J1,K1,L1,M1,N ) = +/- 34.872 psi .

. = +/- 34.9 psi WORST CASE NORMAL ( NON-ACCIDENT ) ERROR w/ SEISMIC (17)

RSS( E,F,G,H,1,J2,K2,L2,M1,N,01,P,Q ) = +/- 50.430 psi WORST CASE ACCIDENT ERROR (270 dF, Full Seismic) _,

RSS( E,F,G,H,1,J2,K2, L2, L3,M1, N,01,P,Q ) + R ' =

+/- 87.414 + 15.3 psi Page 51 e-

1CEN286B.ROA/126 IV. TOTAL CHANNEL WORST CASE NORMAL ERROR w/ SEISMIC (17)

Combine:

A. PPS Cabinet W.C.N. Error: +/- 2.716 psi B. PE Worst Case Normal Error: +/- 50.430 psi RSS( A,B ) = +/- 50.503 psi

= +/- 51 psi V. TOTAL CHANNEL ACCIDENT ERROR (270 dF, Full Seismic)

. Combine:

A. PPS Cabinet W.C.N. Error: +/- 2.716 psi B. PE Worst Case Accident Error: +/- 87.414 + 15.3 psi ,

RSS( A,B ) + B' = +/- 87.456 + 15.3 psi 0.0 psi

, = + 103 psi

= - 88 psi VI. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETPOINT (I-1) (IV)

Trip Setpoint = Analysis Setpoint + Total Channel Error

= 820 psia + 51 psi

= 871 psia (I-2 ) (V)

Trip Setpoint = Analysis Setpoint + Total Channel Error

= 810 psia + 103 psi .

. = 913 psia (18)

Allowable Value = Trip Setpoint - PPS Cabinet PTE

= 913 psia - 1.631 psi

= 912 psi a -

To reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from the calculated Allowable Val ue by 0.5 % of Span . Based on a Span of 1524 psi, the offset is 7.0 psi, and the new Trip Setpoint becomes 919 psia.

The Pretrip Setpoint is set at 960 psia based on engineering judgement.

Page 52

CEN2868.R0A/188 VII. VOLTAGE EQUIVALENTS FOR VI.

The PPS Cabinet input ranges from 0 to 10 volts. Thi s i s equivalent to a process range of 0 to 1524 psia. Based on these endpoints the following linear conversion equations can be derived:

V = P/152.4 Based on this, the following data can be calculated:

Val ue Vol tage Trip Setpoint 919 psia 6.030 volts Allowable Value 912 psia 5.984 vol ts Pretrip Setpoint 960 psia 6.299 volts Cabinet Calib . +/- 1.182 psi +/- 0.008 volts Cabinet PTE +/- 1.631 psi +/- 0.011 vol ts Proc . Equi p. Cal ib . +/- 14.4 psi +/- 0.094 vol ts Proc. Equip. PTE +/- 34.9 psi +/- 0.229 volts VIII. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.180 sec.

B. Foxboro I/E Converters: 0.100 sec.

C. Foxboro E/I Converter: 0.080 sec.

D. PPS Cabinet ( RPS ): 0.150 sec.

E. PPS Cabinet ( ESFAS ): 0.150 sec.

F. Reactor Trip Switch Gear: 0.100 sec.

G. ESFAS. Cabinet Delay: 0.300 sec.

Total Channel Response Time A + B + C + D + F = 0.610 seconds ( For RPS )

A + B + C + E + G = 0.810 seconds ( For ESFAS ) .

The actu'al RPS Channel Delay Time is less than the 1.15 second RPS Tech. Spec. Response Time.

The actual ESFAS Channel Delay Time is less than the 1.15 second ESFAS Analysis Response Time.

Page 53

CEN286B.ROA/250 CALCULATION NOTES:

1. For Non-environmental events requiring MSIS.

2. For Feedwater Line Break and Steam Line Break. Initiates a Reactor Trip and MSIS.

3. For ESFAS applications, signal response time includes sensor input through ESFAS actuation relays.

4. Based on an assumed Calibration Equipment accuracy of

+/- 0.005 vol ts.

5. Based on a PPS Cabinet accuracy of +/- 0.00593 volts. -

6. For a 39 day period. Based on a maximum expected drift of +/- 0.00289 volts over 30 days linearly extrapolated to 39 days.

7. Worst Case Normal errors were based on a +/- 50 degree Fahrenheit shift producing a +/- 0.0156 volt change. One fourth of this was.used to determine Ambient Temperature e f fects .

8. Channel B contains two Foxboro current to voltage conversion cards. The error shown reflects the combined effect of both. This approach has also been used to detennine ad)ient tenperature effects, worst case normal errors and seismic errors.

9. For +/- 10 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

10. Worst case normal error for an 80-130 degree Fahrenheit '

range. One half of this was used to d'etermine ambient temperature effects.

11. Background radiation 'for a 40 year period and a total dose not exceeding 10 million Rads.

12. For a 22.5 month period and normal environment.

13. For a +/- 40 degree Fanrenheit change within a 40-120 degree Farenheit range. ,

14. Uncertainty during the event. Uncertainty after the event was not stated.

15. For a 270 degree Fahrenheit environment. The High Contain-ment Pressure trip function at 6.0 psig will limit the containment environment to this temperature prior to a reactor trip.

Page 54

CEN286B.ROA/312 CALCULATION NOTES (cont.):

16. Based on a 40 million Rad dose. This error was not used because Low Steam Generator Pressure is not credited for events releasing significant amounts of radiation.

17. All equipment is required to function during and after a seismic event.

18. The setpoint associated with the Feedwater Line Break and Steam Line Break events was chosen as the most conservative. -

~

4 4:

Page 55 ,

e

-n -r y, e ,e. ~,+,-w-- -e ,s-, ,- . . , , - - . , -, r- --,e , ,.g- - , .n, ,.., - m,. g .- - - r--- ,r--an - - - - - e------

CEN286B.ROAi374 4.6 CALCULATION OF LOW STEAM GENERATOR WATER LEVEL TRIP e .

I. ANALYSIS VALUES A. Analysis Setpoint (1): 40 % of WR (2): 35 % of WR (3): 15 % of WR (4 ): 10 % of WR B. Sensor Response Time (5): 0.600 sec.

C. RPS Signal Time (1,2): 0.550 sec.

D. ESFAS Signal Delay Time (6): 0.550 sec.

TOTAL ANALYSIS RESPONSE TIME B + C = 1.15 sec . (For RPS Tech. Spec. Use)

B + D = 1.15 sec . (For ESFAS Tech. Spec. Use)

II. PPS CABINET UNCERTAINTIES Instrument Range: 0 to 100 % Span (7)

Voltage Range: 0 to 10 volts Conversion Factor: 10 % Span / volt Conversion Equations: %S = 10V V = %S/10 A. Cal. Equip. Unc. (8): +/- 0.0500 % Span B. Equipment Accuracy (9): +/- 0.0303 % Span C. . Bi stable Dri ft (10): +/- 0.0229 % Span D. Temperature Effect .

1. Ambient (11): +/- 0.0219 % Span

2. Worst Case Normal (11): +/- 0.0877 % Span CALIBRAi10NERROR RSS( A,B ) = +/- 0.058 % Span PERIODIC TEST ERROR '

RSS( A, A,B,C,D1 ) = +/- 0.083 % Span '

WORST CASE NORMAL ERROR RSS( A,B,C,D2 ) = +/- 0.108 % Span Page 56

CEN286B.R0A/436 III. PROCESS EQUIPMENT UNCERTAINTIES E. Cal . Equip. Unc.: +/- 0.5 %

F. Barton 764 Accuracy: +/- 0.5 %

G. Foxboro I/E Accuracy (12): +/- 0.35 %

H. Foxboro E/I Accuracy: +/- 0.5 %

I. Dropping Resistor Error: +/- 0.01 %

J. Foxboro I/E Temperature Effects

1. Ambient (13): +/- 0.14 %

2. Worst Case Normal (17): +/- 0.57 %

K. Foxboro E/I Tenperature Effects

1. Ambient (13): +/- 0.1 %

2. Worst Case Normal (17): +/- 0.4 %

L. Barton 764 Temperature Effects

1. Ambient (14): +/- 0.5 %

2. Worst Case Normal (14): +/- 1.0 %

3. Accident Conditions (19): +/- 2.84 %

4. Accident Conditions (20): +/- 4.95 %

M. Barton 764 Radiation Errors

1. Normal Operation (15): +/- 0.5 %

2. Accident Conditions (21): +/- 3.0 %

N. Barton 764 Drift (16): +/- 1.9 %

0. Barton 764 Seismic Errors

1. During Event: +/- 2.5 %

2. After Event: +/- 1.0 %

P. Foxboro I/E Seismic Error (18): +/- 0. 71 %

Q. Foxboro E/I Seismic Error (18): +/- 0.5 %

R. Terminal Block Accident Error: -

+ 1. 0 %

S. Reference Leg Errors

1. 120 dF to 200 dF Change: + 3.7 %

2. 120 dF to 280 dF Change: + 8.6 %

CALIBRATION ERROR RSS( E,F,G,H,1 ) = +/- 0.934 % Span

= +/- 1.0 % Span .

PERIODIC TEST ERROR RSS( E,E,F,G,H,1,J1,K1.L1,M1,N ) = +/- 2.294 % Span

= +/- 2.3 % Span WORST CASE NORMAL ERROR w/ POST SEISMIC (22)

RSS( E,F,G,H,1,J2,K2,L2,M1,N,02,P,Q ) = +/- 2.823 WORST CASE ACCIDENT ERROR (200 dF, Post Seismic)

RSS( E,F,G,H,1,J2,K2,L2,L3,M1,N,02,P,Q ) + R ' + S1' =

+/- 4.005 + 4.7 % Span

- 0.0 % Span .

Page 57

CEN2868.ROA/498 III. PROCESS EQUIPMENT UNCERTAINTIES (Cont.)

WORST CASE ACCIDENT ERROR (280 dF, Post Seismic)

RSS( E,F,G,H,1,J2,K2,L2,L4,Mi,N,02,P,Q ) + R ' + S2'

+/- 5.699 + 9.6 % Span

- 0.0 % Span

! IV. TOTAL CHANNEL WORST CASE NORMAL ERROR w/ SEISMIC (22)

Combine:

A. PPS Cabinet W.C.N. Error: +/- 0.108 % Span

B.

PE Worst Case Normal Error: +/- 2.823 % Span RSS( A,B ) + B' = +/- 2.825 % Span

= +/- 2.9 % Span V. TOTAL CHANNEL ACCIDENT ERROR (200 dF, Post Seismic)

Combine:

, A. PPS Cabinet W.C.N. Error: +/- 0.108 % Span B. PE Worst Case Accident Error: +/- 4.005 + 4.7 % Span RSS(' A,8 ) + B' = +/- 4.006 + 4.7 % Span

- 0.0 % Span

= + 8.7 % Span

= - 4.0 % Span i

VI. TOTAL CHANNEL ACCIDENT ERROR (280 dF, Post Seismic) .

Combine:

l A. PPS Cab inet W.C.N. Error: +/- 0.108 % Span B. PE Worst Case Accident Error: +/- 5.699 + 9.6 % Span j RSS( A,B ) + B' = +/- 5.700 + 9.6 % Span

- 0.0 % Span '

= + 15.3 % Span

=- 5.7 % Span li Page 58

b CEN2868.R0A/560 VII. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETPOINT (I.RPS) (V)

Trip Setpoint = Analysis Setpoint + Total Channel Error

=

40.0 % Span + 2.9 % Span = 42.9 % Span

= 35.0 % Span + 8.7 % Span = 43.7 % Span

= 43.7 % Span (RPS,23)

(I,EFAS) (VI) <

Trip Setpoint = Analysis Setpoint + Total Channel Error

= 15.0 % Span + 2.9 % Span = 17.9 % Span

= 10.0 % Span + 15.3 % Span = 25.3 % Span

= 25.3 % Span (EFAS,23)

Allowable Value = Trip Setpoint - PPS Cabinet PTE .

= 43.7 % Span - 0.083 % Span

= 43.7 % Span (RPS) i Allowable Value =, Trip Setpoint - PPS Cabinet PTE

= 25.3 % Span - 0.083 % Span 4

= 25.3 % Span (EFAS)

To reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from 'the calculated Allowable Value by 0.5 % of Span. Based on a Span of 190 %,,the offset is 0.5 %, and the new Trip Setpoint becomes 44.2 % for the RPS, and 25.8 % for the EFAS.

Pretrip Setpoint = Trip Setpoint + Total Channel Error

= 44.2 % Span + 2.9 % Span

= 47.1 % Span (RPS)

Pretrip Setpoint = Trip Setpoint + Total Channel Error

= 25.8 % Span + 2.9 % Span

= 28.7 % Span (EFAS)

VIII. VOLTAGE EQUIVALENTS FOR VII'.

'[ The PPS Cabinet input ranges from 0 to 10 volts. This is '

equivalent to a process range of 0 to 100 t Span. Based on these endpoints the following linear conversion equations can be derived:

V = % Span /10 Based on this, the following data can be calculated:

Page 59

, = -y- w -- , y-,- yw a

- w m--p.e m- p+- ,_ +,,--p~ w -- - s - r ,-

9

CEN286B.R0A/622 VIII. V0LTAGE- EQUIVALENTS FOR VII. (Cont.)

Val ue Voltage Trip Setpoint RPS 44.2 % Span (WR) 4.420 volts EFAS 25.8 % Span (WR) 2.580 volts Allowable Value RPS 43.7 % Span (WR) 4.370 volts EFAS 25.3 % Span (WR) 2.530 volts Pretrip Setpoint RPS 47.1 % Span (WR) 4.710 volts EFAS 28.7 % Sp'an (WR) 2.870 volts Cabinet Calib . +/- 0.058 % Span +/- 0.006 volts Cabinet PTE +/- 0.083 % Span +/- 0.008 volts Proc. Equi p. Calib . +/- 1.0 % Span +/- 0.100 vol ts Proc. Equip. PTE , +/- 2.3 % Span +/- 0.230 volts IX. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.180 sec.

B. Foxboro I/E Converters: 0.100 sec.

C. Foxboro E/I Converter: 0.080 sec .

D. PPS Cabinet ( RPS ): 0.150 sec.-

E. PPS Cabinet ( ESFAS ): 0.150 sec.

F. Reactor Trip Switch Gear: 0.100 sec.

G. ESFAS Cabinet Delay: 0.300 sec.

Total Channel Response Time A + B + C + D + F = 0.610 seconds ( For RPS ) ,

A + B + C + E + G = 0.810 seconds ( For ESFAS )

The actual RPS Channel Delay Time is less than the 1.15 second RPS Tech. Spec. Response Time.

The actual ESFAS Channel Delay Time is less than the 1.15 second ESFAS Analysis Response Time. ,

Page 60

l CEN286B.R0A/684 CALCULATION fl0TES:

1. For non-environmental events. Initiates a reactor trip based on wide range indication. Only post-seismic errors are required.

2. For Feedwater Line Break and Steam Line Break events.

Initiates a Reactor Trip based on wide range (WR) indication. Only post-seismic errors are required.

l l 3. For Loss of Condenser Vaccum, Main Steam Isolation Valve Closure, Locked RCP Rotor with Loss of Power, and Steam l

Generator Tube Rupture Events. Initiates EFAS based on wide range indication.

4. Lower limit for LOCA and Steam Line Break events. EFAS Initiation based on wide range indication must occur before this.

5. Applies to events listed in notes 1 through 4.

l

6. Applies to events listed in notes 3 and 4 For ESFAS applications, signal response time includes sensor input through ESFAS actuation relays.

7. The calibrated span of tne transmitter is 262.80 inches of water. The tap span is 376.25 inches of water.

8. Based on an assumed Calibration Equipment accuracy of

+/- 0.005 vol ts .

9. Based on a PPS Cabinet accuracy of +/- 0.00303 volts.

10. For a 39 day period. Based on a maximum expected dri ft of +/- 0.00176 volts over 30 days linearly extrapolated to 39 days.

11. Worst Case No.rmal errors were based on a +/- 50 degree Fahrenheit shi ft producing a +/- 0.00877 volt change.

One fourth of this was used to determine Ambient Tenperature Effects.

12. Channel B contains two Foxboro turrent to voltage conversion cards. The error shown reflects the cad)ined effect of both. This approach has also been used to '

determine ambient temperature effects , worst case normal

! errors and seismic errors.

13. For +/- 10 degree Fahrenheit change within a 40-130 degree Fahrenheit range.

l l

j Page 61 l

CEN2868.R0A/746 CALCULATION NOTES (cont.):

14. Worst case normal error for an 80-140 degree Fahrenheit range. One half of this was used to determine. ambient temperature effects.

15. Background radiation for a 22.5 month period and a total dose not exceeding 0.465 million Rads.

16. For a 22.5 month period and normal environment.

17. For a +/- 40 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

18. Uncertainty during the event. Uncertainty after the event was not stated.

19. For a 200 degree Fahrenheit environment. Analytical requirements indicate that this is the maximum contain-ment temperature that is expected prior to a reactor trip.

20. For a 280 degree Fahrenheit environment. Analytical requirements indicate that this is the maximum contain-ment tenperature that is expected.

21. Based on a 40 million Rad dose. This error was not used because Low Steam Generator Level is not credited for events releasing significant anounts of radiation.

22. All equipment is required to function during and after a seismic event.

23. The higher level accomodates both analysis requirements.

l 4 I

\

Page 62 l

o

CEN2868.ROA/808 4.7 CALCULATION OF HIGH STEAM GENERATOR WATER LEVEL TRIP I. ANALYSIS VALUES A. Analysis Setpoint (1): 99.0 % of NR B. Sensor Response Time (1): 0.600 sec.

C. RPS Signal Delay Time: 0.550 sec.

TOTAL ANALYSIS RESPONSE TIME B + C = 1.15 sec . ( For RPS Tech. Spec. Use )

C.ESSAR, Section 7.2.2.5, requires for level setpoints that no analysis setpoint is within 5.0 percent of the ends of the level span. Accordingly, the analysis setpoint is adjusted downward to 95.0 percent to meet this criteria.

II. PPS CABINET UNCERTAINTIES Instrument Range: 0 to 100 % Span Voltage Range: 0 to 10 volts Conversion Factor: 10 % Span / volt Conversion Equations: %S = 10V V = %S/10 A. Cal. Equip. Unc. (2): +/- 0.0500 % Span B. Equipment Accuracy (3): +/- 0.0303 % Span C. Bistable Drift (4): +/- 0.0229 % Span D. Tenperature Effects

1. Ambient (5): +/- 0.0219 % Span

2. Worst Case Normal (5): +/- 0.0877 % -Span .

CALIBRATION ERROR RSS( A,B ) = +/- 0.058 % Spa::

PERIODIC TEST ERROR RSS( A, A,B,C,D1 ) = +/- 0.083 % Span WORST CASE NORMAL ERROR RSS( A,B,C,02 ) = +/- 0.108 % Span Page 63

' CEN286A.R0A/1366 CALCULATION NOTES (cont.):

13._ For a 22.5 month period and normal environment.

14. For a +/- 40 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

15. Uncertainty during the event. Uncertainty after the event was not stated.

16. For a 270 degree Fahrenheit environment. The High Contain-ment Pressure trip function at 6.0 psig will limit the containment environment to this temperature prior to reactor trip.

17. Based on a 40 million Rad dose.

18. All equipment is required to function during and after a seismic event.

4 Page 49

_ _ _ . _ _ - - -+--_

CEN286B.ROA/002 4.5 CALCULATION OF LOW STEAM GENERATOR PRESSURE TRIP I. ANALYSIS VALUES

A. Analysis Setpoint (1): 820 psia (2): 810 psia B. Sensor Response Time (1,2): 0.600 sec .

C. RPS Signal Time (1,2): 0.550 sec.

D. ESFAS Signal Delay Time (3): 0.550 sec.

TOTAL ANALYSIS RESPONSE TIME B + C = 1.15 sec. ( For RPS Tech. Spec. Use )

B + D = 1.15 sec. ( For ESFAS Tech. Spec. Use )

II. PPS CABINET UNCERTAINTIES Instrument Range: 0 to 1524 psia Voltage Range: 0 to 10 volts Conversion Factor: 152.4 psi / volt Conversion Equations: P = 52.4V V = P/152.4 A. Cal . Equip. Unc. (4): +/- 0.762 psi B. Equipment Accuracy (5): +/- 0.904 psi C. Bistable Drift (6): +/- 0.573 psi D. Temperature Effect

1. Ambient (7): +/- 0.594 psi

, 2. Worst Case Normal (7): +/- 2.377 psi CALIBRATION ERROR RSS( A,B ) = +/- 1.182 psi PERIODIC TEST ERROR RSS( A, A,B,C,01 ) = +/- 1.631 psi WORST CASE NORMAL ERROR RSS( - A,B,C,02 ) = +/- 2.716 psi Page 50

CEN2868.ROA/064 III. PROCESS EQUIPMENT UNCERTAINTIES E. Cal . Equip. Unc.: +/- 7.7 psi F. Barton 763 Accuracy: +/- 7.7 psi G. Foxboro I/E Accuracy (8): +/- 5.4 psi H. Foxboro E/I Accuracy: +/- 7.7 psi I. Dropping Resistor Error: +/- 0.2 psi J. Foxboro I/E Temperature Effects

1. Ambient (9): +/- 2.2 psi

2. Worst Case Normal (13): +/- 8.7 psi K. Foxboro E/I Temperature Effects

1. Ambient (9): +/- 1.6 psi

2. Worst Case Normal' (13): +/- 6.1 psi L. Barton 763 Temperature Effects

1. Ambient (10): +/- 7.7 psi

2. Worst Case Normal (10): +/- 15.3 psi

3. Accident Conditions (15): +/- 71.4 psi M. Barton 763 Radiation Errors

1. Normal Operation (11): +/- 7.7 psi

2. Accident Conditions (16): +/- 45.8 psi N. Barton 763 Drift (12): +/- 28.7 psi

0. Barton 763 Seismic Errors

1. During Event: +/- 30.5 psi

2. After Event: +/- 15.3 psi P. Foxboro I/E Seismic Error (14): +/- 10.8 psi Q. Foxboro E/I Seismic Error (14): +/- 7.7 psi R. Terminal Block Accident Error: + 15.3 psi CALIBRATION ERROR RSS( E,F,G,H,I ) = +/- 14.390 psi

= +/- 14.4 psi PERIODIC TEST ERROR i

RSS( E.E,F,G,H,1,J1,K1,L1,M1,N ) = +/- 34.872 psi

= +/- 34.9 psi WORST CASE NORMAL ( NON-ACCIDENT ) ERROR w/ SEISMIC (17)

RSS( E,F,G,H,1,J2,K2,L2,M1,N,01,P,Q ) = +/- 50.430 psi WORST CASE ACCIDENT ERROR (270 dF, Full Seismic) .

RSS( E F,G,H,1,J2,K2, L2, L3,M1,N,01,P ,Q ) + R ' =

+/- 87.414 + 15.3 psi Page 51

CEN2868.R0A/126 IV. TOTAL CHANNEL WORST CASE NORMAL ERROR w/ SEISMIC (17)

Combine:

A. PPS Cabinet W.C.N. Error: +/- 2.716 psi B. PE Worst Case Normal Error: +/- 50.430 psi RSS( A,B ) = +/- 50.503 psi

= +/- 51 psi V. TOTAL CHANNEL ACCIDENT ERROR (270 dF, Full Seismic)

Combine: _

A. PPS Cabinet W.C.N. Error: +/- 2.716 psi B. PE Worst Case Accident Error: +/- 87.414 + 15.3 psi RSS( A,B ) + B ' = +/- 87.456 + 15.3 psi

- 0.0 psi

= + 103 psi

= - 88 psi VI. TRIP SETPOINT, All.0WABLE VALUE, PRETRIP SETPOINT (1-1) (IV)

Trip Setpoint = Analysis Setpoint + Total Channel Error

= 820 psia + 51 psi

= 871 psia (I-2 ) (V)

Trip Setpoint = Analysis Setpoint + Total Channel Error

= 810 psia + 103 psi

= 913 psia (18)

Allowable Value = Trip Setpoint - PPS Cabinet PTE

= 913 psia - 1.631 psi

= 912 psia To reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from the calculated Allowable

.alue by 0.5 % of Span. Based on a Span of 1524 psi, the offset is 7.0 psi, and the new Trip Setpoint becomes 919 psia.

The Pretrip Setpoint is set at 960 psia based on engineering judgement.

Page 52

CEN286B.R0A/188 l

VII. V0LTAGE EQUIVALENTS FOR VI.

The PPS Cabinet input ranges from 0 to 10 volts. Thi s i s equivalent to a process range of 0 to 1524 psia. Based on these endpoints the following linear conversion equations can be derived:

V = P/152.4 Based on this, the following data can be calculated:

Val ue Voltage Trip Setpoint 919 psia 6.030 volts Allowable Value 912 psia 5.984 vol ts Pretrip Setpoint 960 psia 6.299 volts Cabinet Calib . +/- 1.182 psi +/- 0.008 vol ts Cabinet PTE +/- 1.631 psi +/- 0.011 volts Proc . Equi p. Cal ib . +/- 14.4 psi +/- 0.094 volts Proc. Equip. PTE +/- 34.9 psi +/- 0.229 volts VIII. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.180 sec.

B. Foxboro I/E Converters: 0.100 sec.

C. Foxboro E/I Converter: 0.080 sec.

D. PPS Cabinet' ( RPS ): 0.150 sec.

E. PPS Cabinet ( ESFAS ): 0.150 sec.

F. Reactor Trip Switch Gear: 0.100 sec.

G. ESFAS Cabinet Delay: 0.300 sec.

Total Channel Response Time A + B + C + D + F = 0. 610 seco nd s ( For RPS )

A + B + C + E + G = 0.810 seconds ( For ESFAS )

The actual RPS Channel Delay Time is less than the 1.15 second RPS Tech. Spec. Response Time.

The actual ESFAS Channel Delay Time is less than the 1.15 second ESFAS Analysis Response Time.

Page 53

CEN286B.ROA/250 CALCULATION NOTES:

1. For Non-environmental events requiring MSIS.

2. For Feedwater Line Break and Steam Line Break. Initiates a Reactor Trip and MSIS.

3. For ESFAS applications, signal response time includes sensor input through ESFAS actuation relays.

4. Based on an assumed Calibration Equipment accuracy of

+/- 0.005 vol ts .

5. Based on a PPS Cabinet accuracy of +/- 0.00593 volts. -

6. For a 39 day period. Based on a maximum expected drift of +/- 0.00289 volts over 30 days linearly extrapolated to 39 days.

7. Worst Case Normal errors were based on a +/- 50 degree Fahrenheit shi ft producing a +/- 0.0156 volt change. One fourth of this was used to determine Ambient Temperature e f fects .

8. Channel B contains two Foxboro current to voltage conversion cards. The error shown reflects the cad)ined effect of both. This approach has also been used to detennine anbient temperature effects, worst case normal errors and seismic errors.

9. For +/- 10 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

10 Worst case normal error for an 80-130 degree Fahrenheit range. One half of this was used to detennine ambient temperature effects.

11. Background radiation for a 40 year period and a total dose not exceeding 10 million Rads.

12. For a 22.5 month period and normal environment.

13. For a +/- 40 degree Fahrenheit change within a 40-120 degree Farenheit range.

14. Uncertainty during the event. Uncertainty after the event was not stated.

15. For a 270 degree Fahrenheit environment. The High Contain-ment Pressure trip function at 6.0 psig will limit the containment enviromnent to this temperature prior to a reactor trip.

Page 54

l-CEN2868.ROA/312 CALCULATION NOTES (cont.):

!- 16. Pised on a 40 million Rad dose. This error was not used

! .because Low Steam Generator Pressure is not credited for events releasing significant amounts of radiation.

, 17. All equipment is required to function during and after l- a seismic -event.

18. The _ setpoint associated with the Feedwater Line Break and Steam Line Break events was chosen as the most conservative. '

l 1

l l

l 1

l l

l Page 55 ,

CEN286B.R0A/374

~4.6 CALCULATION OF LOW STEAM GENERATOR WATER LEVEL TRIP I. ANALYSIS VALUES A. Analysis Setpoint (1): 40 % of WR (2): 35 % of WR (3): 15 % of WR (4 ): 10 % of WR B. Sensor Response Time (5): 0.600 sec.

C. RPS Signal Time (1,2): 0.550 sec. 1

0. ESFAS Signal Delay Time (6): 0.550 sec. l l TOTAL ANALYSIS RESPONSE TIME B + C = 1.15 sec . (For RPS Tech. Spec. Use)

B + D = 1.15 sec . (For ESFAS Tech. Spec. Use)

II. PPS CABINET UNCERTAINTIES Instrument Range: 0 to 100 % Span (7)

Voltage Range: 0 to 10 volts Conversion Factor: 10 % Span / volt l . Conversion Equations: %S = 10V l V = %S/10 l

A. Cal. Equip. Unc. (8): +/- 0.0500 % Span B. Equipment Accuracy (9): +/- 0.0303 % Span C. Bistable Dri ft (10); +/- 0.0229 % Span

, D. Temperature Effect l 1. Ambient (11): +/- 0.0219 % Span

,2. Worst Case Normal (11): +/- 0.0877 % Span l'

CALIBRATION ERROR RSS( A,B ) = +/- 0.058 % Span PERIODIC TEST ERROR RSS( A, A,B,C,01 ) = +/- 0.083 % Span WORST CASE NORMAL ERROR RSS( A,B,C,02 ) = +/- 0.108 % Span Page 56

CEN2868.R0A/436 III. PROCESS EQUIPMENT UNCERTAINTIES E. Cal . Equip. Unc.: +/- 0.5 %

F. Barton 764 Accuracy: * '- 0. 5 %

G. Foxboro I/E Accuracy (12): /- 0.35 %

H. Foxboro E/I Accuracy: +/- 0.5 %

I. Dropping Resistor Error: +/- 0.01 %

J. Foxboro I/E Temperature Effects

1. Anbient (13): +/- 0.14 %

2. Worst Case Normal (17): +/- 0.57 %

K. Foxboro E/I Temperature Effects

1. Ambient (13): +/- 0.1 %

2. Worst Case Normal (17): +/- 0.4 %

L. Barton 764 Temperature Effects

1. Ambient (14): +/- 0.5 %

2. Worst Case Normal (14): +/- 1.0 %

3. Accident Conditions (19): +/- 2.84 %

4. Accident Conditions (20): +/- 4.95 %

M. Barton 764 Radiation Errors

1. Normal Operation (15): +/- 0.5 %

2. Accident Conditions (21): ~

+/- 3.0 %

N. Barton 764 Drift (16): +/- 1.9 %

0. Barton 764 Seismic Errors

1. During Event: +/- 2.5 %

2. After Event: .

+/- 1.0 %

P. Foxboro I/E Seismic' Error (18): +/- 0. 71 %

Q. Foxboro E/I Seismic Error (18): +/- 0.5 %

R. Terminal Block Accident Error:- , + 1. 0 %

~

S. Reference Leg Errors -

1. 120 dF to 200 dF Change:

+ 3. 7 %

2. 120 dF to 280 dF Change: '\

+ 8.6 %

CALIBRATION ERROR' -

~

RSS( E,F,G,H,I ) = +/ 0.934 % Span 7

= +/- 1.0 % Span z ,

I PERIODIC TEST ERROR RSS( E,E,F,G,H,1,J1,Kl[L'1,M1,N ) ='+/- 2.294 % Span

= +/- 2.3 % Span

\

WORST CASE NORMAL ERROR w/ POST SEISMIC (22)

RSS( C,F,G,H,I,J2,K2,L2,M1,N,02,P~,Q ) r +/- 2.823 WORST CASE ACCIDENT ERROR (200 JF, Post Seismic)

RSS( E,F,G,H,1,J2,K2, L2,L3,M1,N,02,P.Q ) + R ' + S1' =

+/- 4.005 + 4.7 % Span

- 0.0 % Span Page 57. ,

, _ _ , , , ,_ + - ~, - - - - - . ., - - - . ..

CEN2868.R0A/498 III. PROCESS EQUIPMENT UNCERTAINTIES (Cont.)

WORST CASE ACCIDENT ERROR (280 dF, Post Seismic)

RSS( E,F,G,H. I,J2,K2,L2,L4,M1,N,02,P,Q ) + R ' + S2'

+/- 5.699 + 9.6 % Span

- 0.0 % Span IV. TOTAL CHANNEL WORST CASE NORMAL ERROR w/ SEISMIC (22)

Combine:

A. PPS Cabinet W.C.N. Error: +/- 0.108 % Span B. PE Worst Case Normal Error: +/- 2.823 % Span RSS( A,B ) + B' = +/- 2.825 % Span

= +/- 2.9 % Span V. TOTAL CHANNEL ACCIDENT ERROR (200 dF, Post Seismic)

Combine:

A. PPS Cabinet W.C.N. Error: +/- 0.108 % Span B. PF Worst Case Accident Error: +/- 4.005 + 4.7 % Span RSS('A,B ) + B' = +/- 4.006 + 4.7 % Span

- 0.0 % Span

= + 8.7 % Span

= - 4.0 % Span VI. TOTAL CHANNEL ACCIDENT ERROR (280 dF, Post Seismic)

Combine:

A. PPS Cabinet W.C.N. Error: +/- 0.108 % Span B. PE Worst Case Accident Error: +/- 5.699 + 9.6 % Span RSS( A,B ) + B' = +/- 5.700 + 9.6 % Span

- 0.0 % Span

= + 15.3 % Span

=- 5.7 % Span l

l l

Page 58

CEN286B.R0A/560 VII. TRIP SETP0 INT, ALLOWABLE VALUE, PRETRIP SETPOINT (I,RPS) (V) 1 Trip Setpoint = Analysis Setpoint + Total Channel Error

= 40.0 % Span + 2.9 % Span = 42.9 % Span

= 35.0 % Span + 8.7 % Spaq = 43.7 % Span

- 43.7 % Span (RPS,23)

(I,EFAS) (VI)

Trip Setpoint = Analysis Setpoint + Total Channel Error

= 15.0 % Span + 2.9 % Span = 17.9 % Span

= 10.0 % Span + 15.3 % Span = 25.3 % Span

= 25.3 % Span (EFAS,23)

Allowable Value = Trip Setpoint - PPS Cabinet PTE .

= 43.7 % Span - 0.083 % Span

= 43.7 % Span (RPS)

Allowable value = Trip Setpoint - PPS Cabinet PTE

= 25.3 % Span - 0.083 % Span

= 25.3 % Span (EFAS)

To ' reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from 'the calculated Allowable Value by 0.5 % of Span. Based on a Span of 100 %, the offset is 0.5 %, and the new Trip Setpoint becomes 44.2 % for the RPS, and 25.8 % for the EFAS.

Pretrip Setpoint = Trip Setpoint + Total Channel Error

= 44.2 % Span + 2.9 % Span

= 47.1 % Span (RPS)

Pretrip Setpoint = Trip Setpoint + Total Channel Error

= 25.8 % Span + 2.9 % Span

= 28.7 % Span (EFAS)

VIII. VOLTAGE EQUIVALENTS FOR VII.

The PPS Cabinet input ranges from 0 to 10 volts. Thi s i s equivalent to a process range of 0 to 100 t Span. Based on these endpoints the followdng linear conversion equations can be derived:

V = % Span /10 Based on this, the following data can be calculated: !

Page 59

CEN2868.R0A/622 VIII. VOLTAGE EQUIVALENTS FOR VII. (Cont.)

Val ue Vol tage Trip Setpoint RPS 44.2 % Span (WR) 4.420 vol ts EFAS 25.8 % Span (WR) 2.580 volts Allowable Value RPS 43.7 % Span (WR) 4.370 volts EFAS 25.3 % Span (WR) 2.530 volts Pretrip Setpoint RPS 47.1 % Span (WR) 4.710 volts EFAS 28.7 % Sp'an (WR) 2.870 volts Cabinet Calib . +/- 0.058 % Span +/- 0.006 volts Cabinet PTE +/- 0.083 % Span +/- 0.008 volts Proc . Equi p. Cal ib . +/- 1.0 % Span +/- 0.100 vol ts Proc. Equip. PTE +/- 2.3 % Span +/- 0.230 volts IX. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.180 sec.

B. Foxboro I/E Converters: 0.100 sec.

C. Foxboro E/I Converter: 0.080 sec.

D. PPS Cabinet ( RPS ): 0.150 sec . -

E. PPS Cabinet ( ESFAS ): 0.150 sec.

F. Reactor Trip Switch Gear: 0.100 sec.

G. ESFAS Cabinet Delay: 0.300 sec .

Total Channel Response Time A + B + C + D + F = 0.610 seconds ( For RPS )

A + B + C + E + G = 0.810 seconds ( For ESFAS )

The actual RPS Channel Delay Time is less than the 1.15 second RPS Tech. Spec. Response Time.

The actual ESFAS Channel Delay Time is less than the 1.15 second ESFAS Analysis Response Time.

Page 60

CEN2868.ROA/684 CALCULATION NOTES:

1. For non-environmental events. Initiates a reactor trip based on wide range indication. Only post-seismic errors are required.

2. For Feedwater Line Break and Steam Line Break events.

Initiates a Reactor Trip based on wide range (WR) indication. Only post-seismic errors are required.

3. For Loss of Condenser Vaccum, Main Steam Isolation Valve Closure, Locked RCP Rotor with Loss of Power, and Steam Generator Tube Rupture Events. Initiates EFAS based on wide range indication.

4. Lower limit for LOCA and Steam Line Break events. EFAS Initiation based on wide range indication must occur before this.

5. Applies to events listed in notes 1 through 4.

6. Applies to events listed in notes 3 and 4. For ESFAS applications, signal response time includes sensor input through ESFAS actuation relays.

7. The calibrated span of the transmitter is 262.80 inches of water. The tap span is 376.25 inches of water.

8. Based on an assumed Calibration Equipment accuracy of

+/- 0.005 vol ts .

9. Based on a.PPS Cabinet accuracy of +/- 0.00303 vol ts.

10. For a 39 day period. Based on a maximum expected drift of +/- 0.00176 volts over 30 days linearly extrapolated to 39 days.

11. Worst Case Normal errors were based on a +/- 50 degree Fahrenheit shi ft producing a +/- 0.00877 volt change.

One fourth of this was used to determine Ambient Tenperature Effects.

12. Channel R contains two Foxboro current to voltage conversion cards. The error shown reflects the combined effect of both. This approach has also been used to determine ambient temperature effects , worst case normal errors and seismic errors.

13. For +/- 10 degree Fahrenheit change within a 40-130 degree Fahrenheit range.

Page 61

CEN286B.ROA/746 CALCULATION NOTES (cont.):

14. Worst case normal error for an 80-140 degree Fahrenheit range. One half of this was used to determine ambient temperature effects.

15. Background radiation for a 22.5 month period and a total dose not exceeding 0.465 million Rads.

16. For a 22.5 month period and lormal environment.

17. For a +/- 40 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

18. Uncertainty during the event. Uncertainty after the event was not stated.

19. For a 200 degree Fahrenheit environment. Analytical requirements indicate that this is the maximum contain-ment temperature that is expected prior to a reactor trip.

20. For a 280 degree Fahrenheit environment. Analytical requirements indicate that this is the maximum contain-ment tenperature that is expected.

21. Based on a 40 million Rad dose. This error was not used because Low Steam Generatcr Level is not credited for events releasing significant anounts of radiation.

22. All equipment is required to function during and after a seismic event.

23. The higher level accomodates both analysis requirements.

3 Page 62

,-.a ~ , - . , - - ,,,,v. ,- - ,, - ,- ,-~-,--r,

CEN286B.ROA/808 4.7 CALCULATION OF HIGH STEAM GENERATOR WATER LEVEL TRIP I. ANALYSIS VALUES A. Analysis Setpoint (1): 99.0 % of NR x

B. Sensor Response Time (1): 0.600 sec.

C. RPS Signal Delay Time: 0.550 sec.

TOTAL ANALYSIS RESPONSE TIME B + C = 1.15 sec . ( For RPS Tech. Spec. Use )

- CESSAR, Section 7.2.2.5, requires for level setpoints that no analysis setpoint is within 5.0 percent of the ends of the level span. Accordingly, the analysis setpoint is adjusted downward to 95.0 percent to meet this criteria.

II. PPS CABINET UNCERTAINTIES Instrument Range: 0 to 100 % Span Voltage Range: 0 to 10 volts Conversion Factor: 10 % Span / volt Conversion Equations: %S = 10V V = %S/10 A. Cal. Equip. Unc. (2): +/- 0.0500 % Span B. Equipment Accuracy (3): +/- 0.0303 % Span C. Bistable Drift (4): +/- 0.0229 % Span D. Temperature Effects

1. Ambient (5): +/- 0.0219 % Span

2. Worst Case Normal (5): +/- 0.0877 % Span CALIBRATION ERROR RSS( A,B ) = +/- 0.058 % Span PERIODIC TEST ERROR RSS( A, A,B,C,D1 ) = +/- 0.083 % Span WORST CASE NORMAL ERROR RSS( A,B,C,02 ) = +/- 0.108 % Span Page 63

CEN2868.ROA/870 III. PROCESS EQUIPMENT UNCERTAINTIES E. Cal. Equip. Unc.: +/- 0.5 %

F. Barton 764 Accuracy: +/- 0.5 %

G. Foxboro I/E Accuracy: +/- 0.25 %

H. Dropping Resistor Error: +/- 0.01 %

I. Foxboro I/E Tenperature Effects

1. Ambient (6): +/- 0.1 %

2. Worst Case Normal (10): +/- 0.4 %

J. Barton 764 Temperature Effects

1. Ambient (7): +/- 0.5 %

2. Worst Case Normal (7): +/- 1.0 %

K. Barton 764 Radiation Error (8): +/- 0.5 %

L. Barton 764 Orift (9): +/- 1.9 %

M. Barton 764 Seismic Error (11): +/- 2.5 %

N. Foxboro I/E Seismic Error (12): +/- 0.5 %

CALIBRATION ERROR RSS( E,F,G,H ) = +/- 0.750 % Span

= +/- 0.8 % Span PERIODIC TEST ERROR RSS( E,E,F,G,H,II,J1,K,L ) = +/- 2.221 % Span

= +/- 2.3 % Span WORST CASE NORMAL (NON-ACCIDENT) ERROR w/ SEISMIC (13)

RSS( E,F,G,H,12,J2,K,L,M,N ) = +/- 3.476 % Span IV. TOTAL CHANNEL WORST CASE NORMAL ERROR (13,14)

Combino:

A. PPS Cabinet Max. Op. Error: +/- 0.108.% Span B. PE Worst Case Normal Error: +/- 3.476 % Span RSS( A,B ) = +/- 3.478 % Span

= +/- 3.5 % Span ,

V. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETPOINT (I) (IV)

Trip Setpoint = Analysis Setpoint - Total Channel Error

= 95.0 % Span - 3.5 % Span

= 91.5 % Span l

I I

Page 64 I

r-CEN286B.R0A/932 l

V. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETPOINT (cont.)

Allowable Value = Trip Setpoint + PPS Cabinet PTE

= 91.5 % Span + 0.083 % Span

= 91.5 % Span

! To reduce the possiblity of a Licensee Event Report, the

, Trip Setpoint is offset from the calculated Allowable l Value by 0.5 % of Span. Based on a Span of 100 %, the l offset is 0.5 %, and the new Trip Setpoint becomes 91.0 %.

The Pretrip Setpoint is set at 88.6 % Span based on engineering judgement.

VI. VOLTAGE EQUIVALENTS FOR V.

The PPS Cabinet input ranges from 0 to 10 volts. Thi s i s equivalent to a process range of 0 to 100 % Span. Based on these endpoints the following linear conversion equations can be derived:

V = % Span /10 Based on this, the following data can be calculated:

Val ue Vol tage Trip' Setpoint 91.0 % Span (NR) 9.100 volts Allowable Value 91.5 % Span (NR) 9.150 vol ts Pretrip Setpoint 88.6 % Span (NR) 8.860 vol ts Cabinet Calib . +/- 0.058 % Span +/- 0.006 volts Cabinet PTE +/- 0.083 % Span +/- 0.008 volts Proc. Equip. Calib . +/- 0.8 % Span +/- 0.080 vol ts Proc. Equip. PTE +/- 2.3 % Span +/- 0.230 vol ts Page 65

CEN286B.ROA/994 VIII. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.400 sec.

B. Foxboro I/E Converter: 0.050 sec.

C. PPS Cabinet ( RPS ): 0.150 sec.

D. Reactor Trip Switch Gear: 0.100 sec.

Total Channel Response Time A + B + C + 0 = 0.700 seconds ( For RPS )

The actual RPS Channel Delay Time is less than the 1.15 second RPS Tech. Spec. Response Time.

Page 66

,~

CEN286B.R0A/1056 CALCULATION NOTES:

1. For increase in feedwater flow. Initiates Reactor Trip based on narrow range (NR) indication. This trip prevents moisture carry over _which would fill the steam lines with water and damage the turbine.

2. Based on an assumed Calibration Equipment accuracy of

+/- 0.005 vol ts .

3. Based on a PPS Cabinet accuracy of +/- 0.00303 volts.

4. For a 39 day period. Based on a maximum expected dri ft of +/- 0.00176 volts over 30 days linearly extrapolated to 39 days.

5. Worst Case Normal errors were based on a +/- 50 degree Fahrenheit shi ft producing a +/- 0.00877 volt change. One.

fourth of this was used to determine Anbient Temperature e f fects .

6. For +/- 10 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

7. Worst case normal error for an 80-130 degree Fahrenheit range. One half of this was used to determine ambient temperature effects.

8. Background radiation for a 22.5 month period a'nd a total dose not exceeding 0.465 million Rads.

9. For a 22.5 month period and nonnal environment.

10. For a +/- 40 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

11. Uncertainty dur'ag the event. Uncertainty after the event i s +/- 1.0 7. Span .

12. Uncertainty during the event. Uncertainty after the event was not stated.

13. All equipment is required to ft ': wion during and after a seismic event,

14. No accident condition uncertainties other than seismic are applicable because the High Steam Generator Level trip is not credited for any Design Basis conditions.

l l

Page 67

[

CEN286B.ROA/1118 4.8 CALCULATION OF HIGH STEAM GENERATOR DELTA PRESSURE TRIP I. ANALYSIS VALUES A. Analysis Setpoint (1): 275 psid (2): 325 psid B. Sensor Response Time (1,2): 0.600 sec.

C. ESFAS Signal Delay Time (3): 0.550 sec.

TOTAL ANALYSIS RESPONSE TIME B + C = 1.15 sec. (For ESFAS Tech. Spec. Use)

II. PPS CABINET UNCERTAINTIES Instrument Range: 0 to 1524 psia

.Vol tage Range: 0 to 10 volts Conversion Factor: 152.4 psi / volt Conversion Equations: P = 152.4V V = P/152.4 A. Cal . Equip. Unc. (4 ): +/- 0.762 psi B.- Equipment Accuracy (5): +/- 0.582 psi C. Bistable Dri ft (6): +/- 0.412 psi D. Temperature Effects

1. Ambient (7): +/- 0.386 psi

2. Worst Case Normal (7): +/- 1.545 psi CALIBRATION ERROR.

RSS( A,B ) = +/- 0.959 psi PERIODIC TEST ERROR RSS( A. A B,C,01 ) = +/- 1.349 psi WORST CASE NORMAL ERROR RSS( A.B.C,02 ) = +/- 1.864 psi Page 68

CEN2868.R0A/1180 III. PROCESS EQUIPMENT UNCERTAINTIES E. Cal . Equip. Unc.: +/- 7.7 psi F. Barton 763 Accuracy: +/- 7.7 psi G. Foxboro I/E Accuracy (8): +/- 5.4 psi H. Foxboro E/I Accuracy: +/- 7.7 psi I. Dropping Resistor Error: +/- 0.2 psi J. Foxboro I/E Temperature Effects

1. Anbient (9): +/- 2.2 psi

2. Worst Case Normal (13): +/- 8.7 psi K. Foxboro E/I Temperature Effects

1. Ambient (9): +/- 1.6 psi

2. Worst Case Nonnal (13): +/- 6.1 psi L. Barton 763 Temperature Effects

1. Anbient (10): +/- 7.7 psi

2. Worst Case Normal (10): +/- 15.3 psi

3. Accident Conditions (17): +/- 75.4 psi

4. Accident Conditions (18): +/- 83.4 psi M. Barton 763 Radiation Errors

1. Normal Operation (11): +/- 7.7 psi

2. Accident Conditions (19): +/- 45.8 psi N. Barton 763 Drift (12): +/- 28.7 psi

0. Barton 763 Seismic Errors

1. During Event (14): +/- 30.5 psi

2. After Event (15): +/- 15.3 psi P. Foxboro I/E Seismic Error (16): +/- 10.8 psi Q. Foxboro E/I Seismic Error (16): +/- 7.7 psi R. Terminal Block Accident Error: + 15.3 psi CALIBRATION ERROR (20)

RSS( E,F,G,H,I ) = +/- 14.390 psi

= +/- 14.4 psi PERIODIC TEST ERROR (20)

RSS( E,E,F,G,H,I,J1,K1,L1,M1,N ) = +/- 34.872 psi

= +/- 34.9 psi WORST CASE NORMAL (NON-ACCIDENT) ERROR (15,20,21)

RSS( E,F G,H,1,J2,K2,L2,M1,N,02,P,Q ) = +/- 42.977 psi WORST CASE NORMAL (NON-ACCIDENT) ERROR (14,20,21)

RSS( E,F,G,H,1,J2,K2,L2,M1,N,01,P,R ) = +/- 50.430 psi WORST CASE ACCIDENT ERROR (300 dF, Post Seismic, 20)

RSS( E,F,G,H,1,J2,K2.L2,L4,M1,N,02,P,Q ) + R ' =

+/- 93.822 + 15.3 psi

- 0.0 psi Page 69

l l CEN286B.ROA/1242 l

III. PROCESS EQUIPMENT UNCERTAINTIES CONT.

l WORST CASE ACCIDENT ERROR (280 dF, FULL SE!SMIC, 20)

RSS( E, F,G,H,1,J2,K2, L2, L3,M1, N,01,P,Q ) + R ' = ;

+/- 90.710 + 15.3 psi

- 0.0 psi IV. TOTAL CHANNEL WORST CASE NORMAL ERROR (15,21,22)

Combine:

A. PPS Cabinet W.C.N. Error: +/- 1.864 psi B. PE Worst Case Nomal Error: +/- 42.977 osi RSS( A,B,B ) = +/- 60.807 psi

= +/- 61 psi V. TOTAL CHANNEL WORST CASE NORMAL ERROR (14,21,22)

Cont ine:

A. PPS Cabinet W.C.N. Error: +/- 1.864 psi B. PE Worst Case Nonnal Error: +/- 50.430 psi RSS( A,B,8 ) = +/- 71.343 psi

= +/- 72 psi VI. TOTAL CHANNEL ACCIDENT ERROR (300 dF, Post Seismic, 22) l Combine: r l

l A. PPS Cabinet W.C.N. Error: +/- 1.864 psi I

( B. PE Worst Case Accfdent Random Error: +/- 93.822 psi C. PE Worst Case Accident Additive Error: + 15.3 psi l

RSS( A,B,B C ) = +/- 133.577 psi

= +/- 134 psi t

l VII. TOTAL CHANNEL ACCIDENT ERROR (280 dF, Full Seismic, 22) i Combine:

l A. PPS Cabinet W.C.N. Error: +/- 1.864 psi l B. PE Worst Case Accident Random Error: +/- 90.710 psi l C. PE Worst Case Accident Additive Error: + 15.3 psi RSS( A,B,B,C ) = +/- 129.206 psi

= +/- 130 psi Page 70 l

l CEN2868.ROA/1304 l

VIII. TRIP SETPOINT ALLOWABLE VALUE, PRETRIP SETPOINT l (I-1) (IV) l Trip Setpoint = Analysis Setpoint - Total Channel Error

= 275 psid - 61 psi

= 214 psid (I -2 ) (VI )

Trip Setpoint = Analysis Setpoint - Total Channel Error

= 325 psid - 134 psi

= 191 psid (23) l Allowable Value = Trip Setpoint + PPS Cabinet PTE i

= 191 psid + 1.349 psi

= 192 psid To reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from the calculated Allowable Value by 0.5 % of Span. Based on a Span of 1524 psi, the i offset is 7.0 psi, and the new Trip Setpoint becomes 185 psid.

Pretrip Setpoint = Trip Setpoint - Total Channel Error

= 185 psid - 61 psi j

= ' 124 psid i

Page 71

r-CEN2868.R0A/1366 IX. VOLTAGE EQUIVALENTS FOR VIII.

The PPS Cabinet input ranges from 0 to 10 volts. Thi s i s equivalent to a process range of 0 to 15'4 psid. Based I on these endpoints the following linear cunversion equations can be derived:

Delta V = Delta P/152.4 Based on this, the following data can be calculated:

Val ue 'foi tage Trip Setpoint 185 psid 1.214 volts All owable. Val ue 192 psid 1.260 volts Pretrip Setpoint 124 psid 0.814 volts l

Cabinet Calib . . +/- 0.959 psi +/- 0.006 voits Cabinet PTE +/- 1.349 psi +/- 0.009 volts Proc. Equi p. Cal ib . +/- 14.4 psi +/- 0.094 vol ts Proc. Equip. PTE +/- 34.9 psi +/- 0.229 volts I

X. MEASUREMENT CHANNEL RESPONSE TIMES i A. Process Equipment: 0.180 sec.

0.100 sec.

B. Foxboro 1/E Converters:

C. Foxboro E/I Cony'erter: 0.080 sec.

D. PPS Cabinet ( ESFAS ): 0.150 sec.

E. ESFAS Cabinet Delay: 0.300 sec.

Total Channel Response Time l A + B + C + 0 + E = 0.810 seconds ( For ESFAS )

i The actual ESFAS Channel Delay Time is less than the l

1.15 second ESFAS Analysis Response Time.

1 Page 72

CEN286B.R0A/1428 CALCULATION NOTES:

1. For outside containment breaks. Initiates steam generator i sol ation .

2. For Feedwater Line Break and Steam Line Break inside containment. Initiates steam generator isolation.

3. For ESFAS applications, signal response time includes sensor input through ESFAS actuation relays.

4. Based on an assumed Calibration Equipment accuracy of

+/- 0.005 vol ts .

5. Based on a PPS Cabinet act eacy of +/- 0.00382 vol ts.

6. For a 39 day period. Based on a maximum expected drift of +/- 0.00208 volts over 30 days linearly extrapolated to 39 days.

7. Worst Case Normal errors were based on a +/- 50 degree Fahreheit shi ft producing a +/- 0.01014 volt change. One fourth of this was used to determine Ambient Temperature e f f ects .

8. Channel B contains two Foxboro current to voltage conversion cards. The error shown reflects the combined effect of both. This approach has also been used to determine ad)ient tenperature effects worst case normal errors and seismic errors. -

9. For +/- 10 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

10. Worst case normal error for an 80-130 degree Fahrenheit range. One hal f of this was used to determine ambient temperature effects.

11. Background radiation for a 40 year pariod and a total dose not exceeding 10 million Pads.

12. For a 22.5 month period and normal environment.

13. For a +/- 40 degree Fahrenheit change within a 40-120 degree Fahrenheit range.

14. This uncertainty not required by the Safaty Analysis.

Page 73

I CEN286B.R0A/1490 l

l CALCULATION NOTES (cont.):

15. Identification of a ruptured steam generator can be delayed

, for 30 seconds. A seismic event will be over in 30 seconds.

l, Accordingly, post seismic errors were used.

16. _ Uncertainty during the event. Uncertainty after the event was not stated.

I 17. For a 280 degree Fahrenheit environment. Analytical l

requirements indicate that this is the maximum long tenn

stablilization temperature that is expected during a i

i Feedwater Line Break.

18. For 300 degree Fahrenheit environment. After 100 seconds the containment stablizies at or below this temperature during a Steam Line Break. Peak temperatures encountered prior to this do not affect the transmitter.

19. Based on a 40 million Rad dose. This error was not used because High Steam Generator delta Pressure is not credited for events releasing significant amounts of radiation .

20. For a single process loop only.

21. All equipment is required to function during and after a seismic event. Refer to Notes 14 and 15 for additional in formation .

22. This trip function takes a signal from each steam generator, inverts one and adds the two together to abtain a differential pressure. The errors associated with each channel must be conbined to obtain the total l

channel uncertainty. For this reason, random process t

errors are taken twice. The inversion and adding process will also make the non-random process instrument errors fram each steam generator appear to be random depending on the state of each sensor. For this reason, they are j treated as seperate, but random, components of the total channel uncertainty.

23. The setpoint associated with the Feedwater Line Break and Steam Line Break events was chosen as the most

! conservative.

l 1

i Page 74 l

l

CEN285C.ROA/002 l

! 4.9 CALCULATION OF HIGH CONTAINMENT PRESSURE TRIP l

I. ANALYSIS VALUES 1

l A. Analysis Setpoint (1): 6.0 psig (2): 6.0 psig (3): 6.0 psig (4 ): 6.0 ps1; l B. Sensor Response Time (3): 0.600 sec.

i C. RPS Signal Delay Time (3): 0.550 sec.

0. ESFAS Response Time (1,4,5): 1.150 sec.

l (2,5 ): 2.100 sec .

TOTAL ANALYSIS RESPONSE TIME I B + C = 1.15 sec. (For RPS Tech. Spec. Use) 0 = 1.15 sec. (For ESFAS Tech. Spec. Use)

II. PPS CABINET UNCERTAINTIES

Instrument Ranae: - 4 to +20 psig l Voltage Range: 1 to 5 volts t

Conversion Factor: 6.0 psig/ volt Conversion Equations: P = 6V - 10

, V = ( P+10 )/6 A. Cal. Equip. Unc. (6): +/ 0.030 psi B. Equipment Accuracy (7): +/ 0.018 psi C. Bistable Orift (8): +/ 0.014 psi D. Temperature Effects

1. Ambient (9): +/ 0.013 psi

2. Worst Case Nomal (9): +/ 0.053 psi -

CAllBRATION ERROR RSS( A,8 ) = +/- 0.035 psi PERIO0ic TEST ERROR RSS( A, A,B C D1 ) = +/- 0.050 psi WORST CASE NORMAL ERROR RSS( A,B,C,02 ) = +/- 0.065 psi Page 75 ,

e-- --

CEN286C.ROA/064 III. PROCESS EQUIPMENT UNCERTAINTIES E. Cal . Equip. Unc.: +/- 0.12 psi F. Rosemount 1153 Accuracy: +/- 0.06 psi G. Dropping Resistor Error: +/- 0.01 psi H. Rosemount 1153 Drift (10): +/- 0.94 psi I. Rosemount 1153 Rad. Error (11): +/- 0.23 psi J. Rosemount 1153 Seismic Error: +/- 0.50 psi K. Rosemount 1153 Temp. Error (12): + 0.39 psi CALIBRATION ERROR RSS( E,F,G ) = +/- 0.135 psi

= +/- 0.14 psi PERIODIC TEST ERROR RSS ( d, E, F,G,H, I ) + K ' = +/- 0.984 + 0.39 psi

- 0.00 psi

= + 1.38 psi

= - 0.99 psi WORST CASE NORMAL (NON-ACCIDENT) ERROR W/ SEISMIC (13)

RSS( E.F,G,H,I J ) + K ' = +/- 1.098 + 0.39 psi

- 0.00 psi IV. TOTAL CHANNEL WORST CASE NORMAL ERROR W/ SEISMIC (13)

-Combine:

A. PPS Cabinet W.C.N. Error: +/- 0.065 psi B. PE Worst Case Normal Error: +/- 1.098 + 0.39 psi RSS( A,B ) = +/- 1.100 + 0.39 psi

- 0.00 psi

= + 1.5 psi

= - 1.1 psi Page 76

F CEN286C.ROA/126 V. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETPOINT The Setpoint is bracketed by two methods:

A. Starting from 0.0 psig, the lowest possible value is calculated which would not interfere with operation unnecessarily.

i I

Analysis Setpoint: 0.0 psig Positive Containment Press. Limit: + 0.5 psi Containment Pressure Spike: + 1.2 psi Total Channel Error: + 1.5 psig (IV)

Low Trip Setpoint Limit = 3.2 psig B. Starting from 6.0 psig, the highest possible value is calculated which will guarantee a reactor trip when required.

l Analysis Setpoint: 6.0 psig (I)

Negative Containment Press. Limit: - 0.5 psi Total Channel Error: - 1.1 psi (IV)

High Trip Setpoint Limit = 4.4 psig Trip Setpoint, Method A = 3.2 psig l

Allowable Value = Trip Setpoint + PPS Cabiriet Periodic Test Error

= 3.2 psig + 0.050 psi l = 3.2 psig

! To reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from the calculated Allowable Val ue by 0.2 psi . The new Trip Setpoint becomes 3.0 psig.

! This setpoint is slightly below the Method A limit. <

l However, a false actuation is unlikely and the analytical requirements are better satisfied. .

l The Pretrip Setpoint is set at 2.5 psig based on engineering judgement.

Page 77

CEN286C.ROA/188 l

l l

VI. V0LTAGE EQUIVALENTS FOR V.

The PPS Cabinet input ranges from 1 to 5 volts. Thi s i s equivalent to a process range of -4 to +20 psig. Based on these endpoints the following linear conversion equations can be derived:

V = ( P+10 )/6 Based on this, the following data can be calculated:

Val ue Vol tage Trip Setpoint 3.0 psig 2.167 volts Allowable Value 3.2 psig 2.200 volts l Pretrip Setpoint 2.5 psig 2.083 vol ts l

Cabinet Calib. +/- 0.035 psi +/- 0.006 vol ts Cabinet PTE +/- 0.050 psi +/- 0.008 volts Proc. Equip. Calib . +/- 0.14 psi +/- 0.023 vol ts i

j Proc. Equip. PTE + 1.38 psi + 0.230 volts

- 0.99 psi - 0.165 vol ts VII. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.280 sec.

B. PPS Cabinet ( RPS ): 0.150 sec.

C. PPS Cabinet ( ESFAS ): 0.150 sec.

O. Reactor Trip Switch Gear: 0.100 s ec .

E. ESFAS Cabinet Delay Time: 0.300 sec.

TOTAL CHANNEL RESPONSE TIME A + B + 0 = 0.530 sec. ( For RPS )

A + C + E = 0.730 sec. ( Eor ESFAS )

The actual RPS channel delay time is less than the 1.15 second RPS Tech. Spec. Response Time.

The actual ESFAS channel delay time is less than the 1.15 second ESFAS Analysis Response Time.

Page 78

CEN286C.ROA/250 CALCULATION NOTES: ;

1. For Small and Large Break LOCA's. Initiates CCAS.

2. For Small and Large Break LOCA's. Initiates CIAS.

3. For CEA Ejection, Feedwater Line Break and Steam Line l Break. Initiates a Reactor Trip.

4. For CEA Ejection, Feedwater Line Break and Steam Line Break. Initiates CCAS, CIAS, and MSIS,

- 5. For ESFAS applications, signal response time includes sensor input through ESFAS actuation relays.

! 6. Based on an assumed Calibration Equipment accuracy of

. +/- 0.005 vol ts .

l 7. Based on a PPS Cabinet accuracy of +/- 0.00303 vol ts.

8. For a 39 day period. Based on a maximum expected drift

! of +/- 0.00176 volts over 30 days linearly extrapolated to 39 days.

9. Worst Case Normal errors were based on a +/- 50 degrees Fahrenheit shi ft producing a +/- 0.00877 volt change. One fourth of this was used to determine Ambient Temperature e f fects .

10. For 22.5 month period and normal environment. Based on a maximum expected drift of 0.5 percent of upper range limit ,

( 100 psi ) over 12 months linearly extrapolated to 22.5 months.

11. Based on an Auxiliary Building radiation of one million Rads total integrated dose.

12. Normal, worst case and accident environmental conditions are identical. Tenperature ef fect is 1.6 percent of span based on an ambient temperature range of 50 to 104 degrees Fahrenheit in the Auxiitary Building. Wide variations in ambient temperature between calibration and periodic testing are expected. For this reason, the temperature effect was out reduced by one half to calculate a periodic test errur.

Accident conditions do not apply because the instruments are t located outside of containment.

13. All equipment is required to function during and after a seismic event.

Page 79

l l CEN286C.ROA/312 l 4.10 CALCULATION OF HIGH-HIGH CONTAINMENT PRESSURE TRIP l

!. ANALYSIS VALUES A. Analysis Setpoint (1): 10.0 psig -

(2): 10.0 psig B. Sensor Response Time (2): 0.600 sec.

l C. Signal Response Time (2): 0.550 sec.

l 0. ESFAS Response Time (1,3): 1.150 sec.

TOTAL ANALYSIS RESPONSE TIME l

0 = 1.15 sec. (For ESFAS Tech. Spec. Use)

II. PPS CABINET UNCERTAINTIES Instrument Range: -4 to +85 psig

' Voltage Range: 1 to 5 volts Conversion Factor: 22.25 psi / volt Conversion Equations: P = ( 89V-105 )/4 V = ( 4P+105 )/89 A. Cal. Equip. Unc. (4): +/- 0.111 psi B. Equipment Accuracy (5): +/- 0.067 psi C. B1 stable Orift (6): +/- 0.051 psi D. Temperature Effects .

1. Ambient (7): +/- 0.049 psi

2. Worst Case Normal (7): +/- 0.195 psi CALIBRATION ERROR RSS( A,8 ) = +/- 0.130 psi PERIODIC TEST ERROR RSS( A. A,8,C,01 ) = +/- 0.185 psi WORST CASE NORMAL ERROR RSS( A.B.C,02 ) = +/- 0.240 psi Page 80

CEN286C.ROA/374 111. PROCESS EQUIPMENT UNCERTAINTIES E. - Cal . Equip. Unc.: +/- 0.45 psi F. Rosemount 1153 Accuracy: +/- 0.23 psi G. Dropping Resistor Error: +/- 0.01 psi H. Rosemount 1153 Drift (8): +/- 0.94 psi I. Rosemount 1153 Rad. Error (9): +/- 0.23 psi J. Rosemount 1153 Seismic Error (10): +/- 0.50 psi 1

K. Rosenount 1153 Temp. Error (11): + 1.43 psi CALIBRATION ERROR RSS( E,F G ) = +/- 0.505 psi

= +/- 0.51 psi PERIODIC TEST ERROR !

RSS( E.E.F.G,H,I ) + K' = +/- 1.181 + 1.43 psi !

- 0.00 psi ,

l = + 2.61 psi <

i = - 1.18 psi WORST CASE NORMAL (NON-ACCIDENT) ERROR W/ SEISMIC (12)

RSS( E,F.G,H. I,J ) + K ' = +/- 1.201 + 1.43 psi

- 0.00 psi IV. TOTAL CHANNEL WORST CASE NORMAL ERROR W/ SEISMIC (12) B Combine:

l A. PPS Cabinet W.C.N. Error: +/- 0.240 psi l 8. PE Worst Case Normal Error: +/- 1.201 + 1.43 psi t

l l RSS( A,8 ) = +/- 1.225 + 1.43 psi '

- 0.00 psi

= + 2.66 psi ;

= - 1.23 psi Page 81 l l l

CEN286C.ROA/436 V. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETPOINT (I) (VI)

Trip Setpoint = Analysis Setpoint - Total Channel Error

= 10.0 psig - 1.23 psi

= 8.77 psig Allowable Value = Trip Setpoint + PPS Cabinet Periodic Test Error

= 8.77 psig + 0.185 psi

= 8.9 psig

'To reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from the calculated Allowable Value by 0.4 psi . The new Trip Setpoint becomes 8.5 psig.

The Pretrip Setpoint is set at 6.0 psig based on engineering judgement.

VI. VOLTAGE EQUIVALENTS FOR V.

The PPS Cabinet input ranges from 1 to 5 volts. Thi s i s equivalent to a process range of -4 to +85 psig. Based on these endpoints the following linear conversion equations can be derived:

V = ( 4P+105 )/89 8ased on this, the following data can be calculated:

Val ue vol tage Trip Setpoint 8.5 psig 1.562 volts Allowable Value 8.9 psig 1.580 volts Pretrip Setpoint 6.0 psig 1.449 volts Cabinet Calib . +/- 0.130 psi +/- 0.006 vol ts Cabinet PTE +/- 0.185 psi +/- 0.008 volts Proc. Equip. Cal tb . +/- 0.51 psi +/- 0.023 volts Proc. Equip. PTE + 2.61 psi + 0.117 volts

- 1.18 psi - 0.053 volts Page 82

f l CEN286C.ROA/498 l

! t VI!!. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.280 s ec.

B. PPS Cabinet ( ESFAS ): 0.150 sec. !

l C. ESFAS Cabinet Delay Time: 0.300 sec.

TOTAL CHANNEL RESPONSE TIME l

A + B + C = 0.730 sec. ( For ESFAS ) l i

The actual ESFAS channel delay time is less than the 1.15 second ESFAS Analysis Response Time. l l l l' >

l l

l I i l

I i

l t !

i !

t l

l I

f t

t l

i l

I Page 83 l

l !

CEN286C.R0A/560 CALCULATION NOTES:

1. For Small Break and Large Break LOCA's. Initiates CSAS.

2. For CEA Ejection, Feedwater Line Break and Steam Line Break. Initiates CSAS.

3. For ESFAS applications, signal response time includes sensor input through ESFAS actuation relays.

4. Based on an assumed Calibration Equipment accuracy of

+/- 0.005 vol ts .

5. Based on a PPS Cabinet accuracy of +/- 0.00303 volts.

6. For a 39 day period. Based on a maximum expected drift of +/- 0.00176 volts over 30 days linearly extrapolated to 39 days.

l

7. Worst Case Normal errors were based on a +/- 50 degree j Fahrenheit shift producing a +/- 0.00877 volt change. One j fourth of this was used to determine Ambient Temperature e f fects .

8. For a 22.5 month period and normal environment. Based on a 1 maximum expected drift of 0.5 percent of upper range limit I

( 100 psi ) over 12 months linearly extrapolated to 22.5 months.

9. Based on an' Auxiliary Buildins radiation of one million Rads total integrated dose. l

10. Uncertainty during the event.

I

11. Normal, worst case and accident environmental conditions are identical . Temperature effect is 1.6 percent of span based on an ambient temperature range of 50 to 104 degrees 1 Fahrenheit in the Auxiliary Building. Wide variations in I ambient tenperature between calibration and periodic testing are expected. For this reason, the temperature effect was not reduced by one hal f to calculate a periodic test error.

Accident conditions do not apply because the instruments are located outside of containment.

12. All equipment is required to function during and after a seismic event.

l l

Page 84

CEN286C.R0A/622 4.11 CALCULATION OF LOW REFUELING WATER TANK LEVEL TRIP I. ANALYSIS VALUES A. Analysis Setpoint (1): 14,970 Gallons (2): 399,200 Gallons B. Analysis Delaf Time (3): 45.0 sec .

The calibrated span of the transmitter extends from elevation 94' 10" to the bottom of the overflow line at elevation 154' 2". This equates to a span of 712 inches. (See Assumption 3.9)

II. PPS CABINET UNCERTAINTIES .

Instrument Range: 0 to 100 % Span Voltage Range: 1 to 5 volts Conversion Factor: 25 % Span / volt Conversion Equations: %S = 25V - 25 V = ( %S+25 )/25 A. Cal . Equip. Unc. (4): +/- 0.125 %

B. Equipment Accuracy (5): +/- 0.076 %

C. Bistable .Dritt (6): ' +/- 0.057 %

D. Tenperature Effects

1. Ambient (7): +/- 0.055 %

2. Worst Case Normal (7): +/- 0.219 %

CALIBRATION ERROR RSS( A,8 ) = +/- 0.146 % Span PERIODIC TEST ERROR RSS( A A,B,C,D1 ) = +/- 0.208 % Span WORST CASE NORMAL ERROP.

RSS( A,B,C,02 ) = +/- 0.269 % Span l

I 1

i I

1 Page 85

CEN286C.ROA/684 III. M10 CESS EQUIPMENT UNCERTAINTIES E. Cal . Equip. Uncertainty: +/- 0. 50 %

F. Rosemount 1153 Accuracy: +/- 0.25 %

G. Dropping Resistor Error: +/- 0.01 %

H. Rosemount 1153 Drift (8): +/- 0.99 %

I. Rosemount 1153 Seismic Error (9): +/- 0.53 %

J. Rosemount 1153 Temp. Error (10): + 2.3 %

K. Vent Sizing Error (11): -

1.2 %

CALIBRATION ERROR

, RSS( E,F,G ) = +/- 0.559 % Span

= +/- 0.6 % Span PERIODIC TEST ERROR RSS( E,E,F,G,H ) + J ' = +/- 1.242 + 2.3 % Span 0.0 % Span

= + 3.6 % Span

= - 1.3 % Span WORST CASE PUMP DOWN ERROR W/ SEISMIC (12)

RSS( E,F,G,H,I ) + J ' + K ' = +/- 1.254 + 2.3 % Span

- 1.2 % Span IV. TOTAL CHANNEL WORST CASE NORMAL ERROR W/ SEISMIC (12)

Combine:

A. PPS Cabinet W.C.N. Error: .

+/- 0.269 % Span B. PE W. C. Pump Down Error: +/- 1.254 + 2.3 - 1.2 % Span RSS ( A, B ) + B ' - B ' = +/- 1.283 + 2.3 % Span

- 1.2 % Span

= + 3.6 % ' Span

= - 2.5 % Span Page 86

-nc-, , , - - ,

-,r- - a , ,

CEN286C.R0A/746 V. CONVERSION OF ANALYSIS SETPOINT There are 7.48 gallons in one cubic feet of water.

( 14,970 )/( 7.48 ) = 2,001.3 cu feet The refueling water tank has an inside diameter of 46.46 feet. The cross-sectional area of the tank is:

( 3.14 )( 46.46 )( 46.46 )/( 4.0 ) = 1,694.4 sq feet The Analysis Setpoint in terms of inches of water is:

( 2,001.3 )( 12 )/( 1,694.4 ) = 14.17 inches The Analysis Setpoint in terms of percent of sensor span is:

( 14.17 )( 100 )/( 712 ) = 2.0 %

CESSAR, Section 7.2.2.5, requires for level setpoints that no Analysis Setpoint is within 5.0 percent of the ends of the level span. Accordingly, the calculated Analysis Setpoint is adjusted upward by 3.0 percent to meet this criterion.

VI. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETP0 INT (I) (V)

Trip Setpoint = Analysis Setpoint + Total Channel Error

= 5.0 f. Span + 3.6 % Span

= 8.6 % Span Allowable Value = Trip Setpoint - PPS Cabinet PTE

' 8.6 % Span - 0.208 % Span

=

= 8.4 % Span To reduce the possiblity of a Licensee Event Report, the Trip Setpoint is offset from the calculated Allowable Value by 0.5 % of Span. Based on a Span of 100 %, the offset is 0.5 %, and the new Trip Setpoint becomes 8.9 % of Span.

Pretrip Setpoint = Trip Setpoint + Total Channel Error

= 8.9 % Span + 3.6 % Span

= 12.5 % Span Page 87

CEN286C.R0A/808 VII. VOLTAGE EQUIVALENTS FOR VI.

The PPS Cabinet input ranges from 1 to 5 volts. Thi s i s equivalent to a process range of 0 to 100 % Span. Based on these endpoints the following linear conversion equations can be derived:

V = ( %S+25 )/25 Based on this, the following data can be calculated:

Value vol tage Trip Setpoint 8.9 % Span 1.356 volts Allowable Value 8.4 % Span 1.336 volts Pretrip Setpoint 12.5 % Span 1.500 volts Cabinet Calib . +/- 0.146 % Span +/- 0.006 volts Cabinet PTE +/- 0.208 % Span +/- 0.008 volts Prdc . Equi p~. Cal ib . +/- 0.6 % Span +/- 0.024 vol ts Proc. Equip. PTE + 3.6 % Span + 0.144 vol ts

- 1.3 % Span - 0.052 vol ts VIII. LIMITING CONDITION FOR OPERATION A minimum fill capacity for the Refueling Water Tank must be established to ensure that 399,200 gallons of borated water has been pumped into containment before recirculation is initiated.

The minimum fill capacity must include the setpoint and one negative channel error interval in addition to the minimum transfer margin. ,

The sum of the setpoint and the error interval is:

8.9 % Span + 2.5 % Span = 11.4 % Span In terms of gallons, this maximum setpoint is:

( 0.114 )( 712 inches )/( 12 ) = 6.764 feet

( 6.764 )( 1,694.4 ) = 11,461 cd)ic feet

( 11,461 )( 7.48 ) = 85,729 gallons Page 88 y +-e w.~-m-- w mw w t -

CEN286C.ROA/870 VIII. LIMITING CONDITION FOR OPERATION CONT.

Accordingly, the minimum fill capacity is:

399,200 + 85,729 = 484,929 gallons

= 485,000 gallons This has been made an assumption and must be verified by the customer.

IX. MEASUREMENT CHANNEL RESPONSE TIMES A. Process Equipment: 0.220 sec.

B. PPS Cabinet (ESFAS): 0.150 sec.

C. ESFAS Cabinet Delay Time: 0.300 sec.

TOTAL CHANNEL RESPONSE TIME A + B + C = 0.670 Seconds This is less than the 45.0 seconds Analysis Response Time. Accordingly, the equipment is performing consistent with the Safety Analysis.

Page 89

CEN286C.R0A/932 CALCULATION NOTES:

1. Minimum recirculation suction transfer margin. Recircul a-tion must be initiated before this.

2. Minimun transfer volse requirement before recirculation is initiated.

3. Time interval from when the monitered parameter exceeds the Analysis Setpoint at the input to the channel sensor until the sump valves are fully open.

4 Based on an assumed calibration equipme'nt accuracy of

+/- 0.005 vol ts.

5. Based on a PPS Cabinet accuracy of +/- 0.00303 vol ts.

6. For a 39 day period. Based on a maximm expected drift of +/- 0.00176 volts over 30 days linearly extrapolated to 39 days.

7. Worst Case Normal errors were based on a +/- 50 degree Fahrenheit shi ft producing a +/- 0.00877 volt change. One fourth of this was used to determine Ambient Temperature e f fects .

8. For a 22.5 month period and normal environment. Based on a maximum expected drift of 0.5 % of upper range over 12 months linearly extrapolated to 22.5 months. Upper range limit .s 750 inches of water and the calibrated span is 712 inches of water. ,

9. Based on a maximun expected seismic effect during the event of +/- 0.5 % of upper range. Upper range limit is 750 inches of water and the calibrated span is 712 inches of water.

10. Normal, Worst Case and Accident Environmental Conditions are identical. Temperature effect is 2.3 % of span based on an ambient temperature range of 25 to 116 degrees Fahrenheit in the yard area. Wide variations in anbient temperature between calibration and periodic testing are -

ex pected. For this reason , the temperature effect was not reduced by one half to calculate a periodic test error.

11. Due to the miscalculation of the vent size needed during a maximun pump down a vacuum of up to (-8) inches will be created during the punp down. This will cause the transmitter to see a level 8 inches below actual . The percent error was based on this 8 inches and a span of 712 inches.

Page 90

CEN286C.R0A/994 CALCULATION NOTES (cont.):

12. All equipment is required to function during and after a seismic event.

13. The outside diameter is 46.5 feet and the liner thickness is 0.25 inch. Measurement errors in these dimensions are not taken into account.

T T

4 s

f i

Page 91 f

e

- * - - , - - , -yw w.- ., m ,,-,.y , , , , . - , - , - ,,--y .m--. , - .

e- ,, , - , , , - - 3 - y-w -

,.me.- ,.-y,-, , , , . mww., -,.

CEN286C.ROA/1056 4

4.12 CALCULATION OF SPS HIGH PRESSURIZER PRESSURE TRIP I. ANALYSIS VALUES A. Analysis Setpoint (1,2): 2475 psia B. Sensor Response Time (1,2): 0.600 sec.

C. SPS Signal Delay Time (1,2): 0.550 sec.

TOTAL ANALYSIS RESPONSE TIME

- 8 + C = 1.15 sec. (For SPS Tech. Spec. Use)

II. SPS CABINET UNCERTAINTIES

. Instrument Range: 1500 to 2500 psia Voltage Range: 1 to 5 volts Conversion Factor: 250 psi / volt Conversion Equations: P = 250V + 1250 V = ( P-1250 )/250 A. Cal . Equip. Unc. .(3): +/- 1.250 psi B. Equipment Accuracy (4): +/- 1.638 psi C. Bistable Dri ft (5): +/- 0.635 psi D. Temperature Effects

1. Ambient (6): +/- 0.785 psi

2. Worst Case Normal (7): +/- 2.488 psi CALIBRATION ERROR RSS( A,B ) = +/- 2.060 psi PERIODIC TEST ERROR RSS( A A,B,C,01 ) = +/- 2.613 psi WORST CASE NORMAL ERROR RSS( A,B,C,D2 ) = +/- 3.292 psi 4

Page 92

CEN286C.R0A/1118 III. PROCESS EQUIPMENT UNCERTAINTIES E. Cal . Equip. Unc.: +/- 5.0 psi F. Rosemount Accuracy: +/- 2.5 psi G. Rosemount Amb. Temp. Effect: +/- 5.5 psi

+/- 28.2 psi H. Rosemount Drift (8):

I. Rosemount W.C.N. Error (9): +/- 18.5 psi J. Rosemount Seismic Error (10): +/- 15.0 psi K. Rosemount Radiation Error (11): + 10.0 psi CALIBRATION ERROR RSS( E,F ) = +/- 5.590 psi

= +/- 5.6 psi PERIODIC TEST ERROR i RSS( E,E,F,G,H ) + K' = +/- 29.694 + 10.0 psi

- 0.0 psi

= + 39.7 psi

= - 29.7 psi WORST CASE NORMAL (NON-ACCIDENT) ERROR w/ SEISMIC (12)

RSS( E, F,H, I,J ) + K ' = +/- 37.333 + 10.0 psi 0.0 psi IV. TOTAL CHANNEL WORST CASE NORMAL ERROR w/ SEISMIC (12)

Combine:

A. PPS Cabinet Max. Op. Error: +/- 3.292 psi B. PE Worst Case Normal Error: +/- 37.333 + 10.0 psi RSS ( A, B ) + B ' = + /- 37.478 + 10.0 psi

= + 47.5 psi

= - 37.5 psi V. TRIP SETPOINT, ALLOWABLE VALUE, PRETRIP SETPOINT (I) (IV)

Trip Setp9 int = Analysis Setpoint - Total Channel Error

= 2475 psia - 37.5 psi

= 2437 psia Page 93

CEN286C.R0A/1180 Y. TRIP SETP0 INT, ALLOWABLE VALUE, PRETRIP SETP0 INT (cont.)

Allowable Value = Trip Setpoint + PPS Cabinet PTE

= 2437 psia + 2.613 psi

= 2439 psia To reduce the possibility of a Licensee Event Report, the Trip Setpoint is offset from the calculated Allowable Value by 0.5 % of Span. Based on a Span of 1000 psi, the offset is 5.0 psi, and the new Trip Setpoint becomes 2434 psia.

Pretrip Setpoint = Trip Setpoint - Total Channel Error

= 2434 psia - 37.5 psi

= 23% psia VI. V0LTAGE EQUIVALENTS FOR V.

The PPS Cabinet input ranges from 1 to 5 volts. Thi s i s equivalent to a process range of 1500 to 2500 psia. Based on these endpoints the following linear conversion equations can be derived:

V = ( P-1250 )/250 Based on this, the following data can be calculated:

s Val ue Vol tage Trip Setpoint 2434 psia 4.736 volts Allowable Value 2439 psia 4.756 vol ts Pretrip Setpoint 2396 psia 4.584 volts Cabinet Calib . +/- 2.060 psi +/- 0.008 vol ts Cabinet PTE +/- 2.613 psi +/- 0.010 vol ts Proc. Equi p. Cal ib . +/- 5.6 psi +/- 0.022 vol ts Proc. Equip. PTE + 39.7 psi + 0.159 vol ts

- 29.7 psi - 0.119 vol ts Page 94

.~_m y .,--- . _ _ _ -_m., . . - . . . - - , . ,~..._3. .__r-- _ . _ - _ , _ __~ . _ , , ~ ~ , ,

CEN286C.R0A/1242 VII. MEASUREMENT CHANNEL RESPONSE TIMES (2) i A. Process Equipment: 0.200 sec.

B. SPS Cabinet: 0.150 sec.

C. Reactor Trip Switch Gear: 0.100 sec.

TOTAL CHANNEL RESPONSE TIME A + B + C = 0.450 sec.

The actual SPS channel delay time is less than the 1.15 second RPS High Pressurizer Pressure Tech. Spec.

Response Time.

l' 4

4 d

Page 95

CEN286C.ROA/1304 CALCULATION NOTES:

1. For Anticipated Transients Without Scram ( ATWS) events.

The SPS environment for qualification corresponds to the environment utilized for non-pipe break accidents.

2. No ATWS licensing requirements exist at the present time even though ATWS are the Design Basis Events for the SPS..

Until such time as licensing requirements are finalized, the highest Analysis Setpoint and fastest response times for the RPS High Pressurizer Pressure trip function will be used.

3. Based on an asstsned calibration equipment accuracy of

+/- 0.005 vol ts .

4. Based on a SPS Cabinet accuracy of +/- 0.00655 volts.

5. For a 39 day period. Based on a maximum expected drift of

+/- 0.00254 vol ts.

6. Based on an ambient temperature effect of +/- 0.00314 volts.

7. Based on a maximum temperature effect of +/- 0.00995 volts .

8. For a 22.5 month period.

9. Worst Case Normal Er'ror.

10. Uncertainty during the event. Uncertainty after the

-event was not defined.

11. Due to normal background radiation over a 22.5 month period.

12. All equipment is required to function during a seismic event.

Page 96

CEN2865.ROA/002 5.1 CHANNEL DIAGRAM FOR VARIABLE. 0VERPOWER

Ex-Core Fi ssion Chambers

Westinghouse

( Model 24036 )

High *

Vol tage

Westinghouse Fil ter *

( Model 24037 )

Rate-Limited * *

Vari able * * *

Setpoint * * *

Bi stable *

Trip Unit *

Plant Protection System

Cab inet Page A-1

CEN2865,R0A/064 5.2 CHANNEL DIAGRAM FOR HIGH LOGARITHMIC POWER

Ex-Core Fission Chambers

Westinghouse

( Middle ) ( Model 24036 )

s i *

High *

Pre-Anp

Vol tage

Westinghouse Fil ter *

( Model 24037 ) .

I

Plant Protection System *

Cab inet

Page A-2 I

t r e- e , -_-y __._.,---.-.7 - - . _ _

_, m, ry, . , _ . - - .m,., - , ,. ---- , .. , ~ ,,_.,- ,- ,, ,n -.-- -

CEN2865.R0A/126 1

5.3 CHANNEL DIAGRAM FOR HIGH PRESSURIZER PRESSURE 1 P-101 A,B,C, D

PT-101

ITT Barton Transmitter

( Model 763 )

PY-101 Foxboro I/E Converter

( Model 2Al-12V )

k *

- - - - w******* ***************

PPS Cabinet *

CPC's

Page A-3

CEN2865.R0A/188 5.4 CHANNEL DIAGRAM FOR LOW PRESSURIZER PRESSURE P-102 B P-102 A,C,D PT-102B PT-102A,C,0

ITT Barton Transmitter

( Model 763 )

PY-1028-1

PY-102A C D

Foxboro I/E Converter

( Model 2AI-12V )

k k k k k

P Y-102B -2 *

Foxboro E/I Converter

( Model 2AO-VAI )

k k

PY-102B Foxboro I/E Converter

( Model 2AI-12V )

k k

Plant Protection System

Cab inet Page A-4 1

CEN2865.ROA/250 5.5 CHANNEL DIAGRAM FOR LOW STEAM GENERATOR PRESSURE P-1013 B P-1013 A,C,0

( P-1023 B ) ( P-1023 A,C,D )

PT-10138 *

PT-1013A.C.D* ITT Barton Transmitter (1023) (1023) ( Model 763 )

PY-10138-1 *

PY -1013A,C,0* Foxboro 1/E Converter (1023) (1023) ( Model 2AI-I2V )

PY-10138-2 *

Foxboro E/I Converter (1023) ( Model 2A0-VAI )

PY-1013B

Foxboro I/E Converter (1023) ( Model 2AI-I2V )

k

Plant Protection System

Cab inet Page A-5

CEN2865.R0A/312 5.6 CHANNEL DIAGRAM FOR LOW STEAM GENERATOR WATER LEVEL ( WR )

L-1113 B L-1113 A,C,0

( L-1123 B ) ( L-1123 A,C,D )

LT-11138 *

LT-1113A,C D* ITT Barton Transmitter (1123)

(1123) ( Model 763 )

LY-1113B-1 *

LY-1113A C.D* Foxboro I/E Converter (1123) (1123) ( Model 2AI-12V )

k

LY-11133-2 *

Foxboro E/I Converter (1123) ( Model 2AO-VAI )

k k k k

LY-1113B-

Foxboro I/E Converter (1123) ( Model 2AI-I2V )

k k k k

Plant Protection System

Cab inet Page A-6

CEN2865.ROA/374 5.7 CHANNEL DIAGRAM FOR HIGH STEAM GENERATOR WATER LEVEL ( NR )

L-1114 A,B,C,0

( L-1124 A,B,C,0 )

LT-1114

ITT Barton Transmitter

_(1124) ( Model 764 )

LY-1114 Foxboro I/E Converter (1124) ( Model 2AI-12V )

PPS Cabinet

Page A-7

CEN2865.R0A/436 5.8 CHANNEL DIAGRAM FOR STEAM GENERATOR DELTA PRESSURE PD-115 A,B,C,D PD-125 A,B,C,D PDT-115 *

PDT-125

ITT Barton Transmitter

( Model 764 )

PDY-115 PDY-125 Foxboro I/E Converter

( Model 2AI-12V )

k *

PPS Bistable *

PPS Bi stable *

SG2 > SG1 *

SG1 > SG2

k k

Plant Protection System

Cab inet

Page A-8

CEN2865.R0A/498 5.9 CHANNEL DIAGRAM FOR HIGH CONTAINMENT PRESSURE Y

P-351 A,B,C,0 e *

PT-351

Bechtel Supplied Transmitter

- - - - p*

PPS Cabinet

1 .

i 4

i Page A-9

. - - - .- - - , -._.._..e-.-,, . _ , _ . . .-,__.--__,,,-..,_-._,y--..m~....__.-_-....e,,.,.,- , _ . , . . . ._ -,., _ - - .., ...r_.-- - , , . _ ._

CEN2865.ROA/560 5.10 CHANNEL DIAGRAM FOR HIGH-HIGH CONTAltNENT PRESSURE P-352 A,B,C,0 PT-352

Bechtel Supplied Transmitter

PPS Cab inet

Page A-10

CEN2865.ROA/622 5.11 CHANNEL DIAGRAM FOR LOW REFUELING WATER TANK LEVEL L-203 A,B,C D

- LT-203 -* Bechtel Supplied Transmitter

~

PPS Cabinet

Page A-11

CEN2865.R0A/684 t

5.12 CHANNEL DIAGRAM FOR SPS ( HIGH PRESSURIZER PRESSURE )

P -199 A,B,C,0

- PT-199

Rosemount Transmitter

( Model 1153 D )

SPS Cabinet

i Page A-12

- __ _- _ _ - _ _ _ _ - _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - - _ _ _ - _ _ _ _ - - _ - _ _ _ _ - _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ - _ _ . _ _ - _ _ _ _ _ _ _ _ _ _

ML20094F632

Contents

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1.0 INTRODUCTION

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ML20094F632

Text

1.0 INTRODUCTION

SUMMARY

1.0 INTRODUCTION

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