ML18086B099

Forwards Proprietary & Nonproprietary Versions of Reactor Protection Sys & ESF Actuation Sys Setpoint Methodology. Proprietary Version Withheld (Ref 10CFR2.790)

ML18086B099
Person / Time
Site:	Salem
Issue date:	11/30/1981
From:	Linden E Public Service Enterprise Group
To:	Varga S Office of Nuclear Reactor Regulation
Shared Package
ML18086B100	List: ML18086B099 ML18086B101 ML20038B548
References
NUDOCS 8112080349
Download: ML18086B099 (32)

Text

PS~G

• Public Service Electric and Gas Company 80 Park Plaza Newark, N.J. 07101 Phone 201/430-7000

\

November 30, 1981 Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue Bethesda, MD 20014 Attention: Mr. Steven A. Varga, Chief ~*

Operating Reactors Branch 1 '

Division of Licensing Gentlemen:

APPLICATION FOR WITHHOLDING PROPRIETARY INFORMATION FROM PUBLIC DISCLOSURE NO. 2 UNIT SALEM NUCLEAR GENERATING STATION DOCKET NO. 50-311 Our letter of November 20, 1981 transmitted PSE&G's report related to Reactor Protection System and Engineered Safety Features Actuation System Setpoint Methodology pursuant to paragraph 2.C(S) of Facility Operating License DPR-75. Since that report contained information th~t is proprietary to the Westinghouse Electric Corporation, we re-quested that the report be withheld from public disclosure pursuant to section 2.790 of the Commission's regulations.

Supplementing our November 20, 1981 submittal, you will find enclosed:

1. Ten (10) copies of Information Related to Reactor Protection System/Engineered Safety Features Actuation System Setpoint Methodology (Proprietary),

November 1981

2. Ten (10) copies of Information Related to Reactor Protection System/Engineered Safety Features Actuation System Setpoint Methodology (Non-Proprietary), November 1981

3. One (1) copy of Westinghouse Affidavit, CAW-81-84 (Non-Proprietary) __

~~~ \

( 81120800~~90~6665~1 PDR p

AD PDR The Energy People 95-2001 (400M) 1-81

U.S. Nuclear Regulatory Commission 11/30/81 As this submittal contains information proprietary to Westinghouse Electric Corporation, it is supported by an affidavit signed by Westinghouse, the owners of the information. The affidavit sets forth the basis on which the information may be withheld from public disclosure by the Commission and addresses with specificity the con-siderations listed in paragraph (b)(4) of section 2.790 of the Commission's regulations.

Accordingly, it is respectfully requested that the information which is proprietary to Westinghouse be withheld from public disclosure in accordance with 10CFR section 2.790 of the Commission's regulations.

Correspondence with respect to the proprietary aspects of this appli-cation for withholding or the supporting Westinghouse affidavit should reference CAW-81-84, and should be addressed to R. A. Wiesemann, Manager, Regulatory and Legislative Affairs, Westinghouse Electric Corporation, P.O. Box 355, Pittsburgh, Pennsylvania 15230.

Should you have any questions, do not hesitate to contact us.

Very truly yours,

~

EAL:sal .~. A. Liden Manager - Nuclear Licensing Enclosures CC Mr. Leif Norrhoha.

Senior Resident Inspector Mr. Gary C. Meyer Licensing Project Manager

I

,::0 NOVEIV1B.fiR 1981 f PS~G I The Energy People **

I SALEM NUCLEAR GENERATING. STATION .. .

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I' ,. * .**-:-. * *.. _..:_**~< *._ . *REACT<iFr PROT"i~ct1o~i svsTEM ***. .:.-. . . . _ ~. . .. . **.. . *-:_

1*:. ** AND El\JGINEERED SAPETY -:F*E.A.T.URES. ACTUATION SYSTEM SETPOINT METHODOLOGY*.

I -:.*

NON -~J~_Bf)_f?_EUEIARY~

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I - NOTICE -

I THE ATTACHED FILES ARE OFFICIAL RECORDS OF THE DIVISION OF DOCUMENT COIHROL. THEY HAVE BEEN CHARGED TO YOU FOR A LIMITED TIME PERIOD AND MUST BE RETURNED TO THE RECORDS FACILITY I BRANCH 016. PLEASE DO NOT SEND DOCUMENTS CHARGED OUT THROUGH THE MAIL. REMOVAL OF ANY PAGE(S) FROM DOCUMENT FOR REPRODUCTION MUST BE REFERRED TO FILE PERSONNEL.

I DEADLINE RETURN DATE

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a o .:i- tJatt) Bu

• RECORDS FACILITY BRANCH

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I REACTOR PROTECTION SYSTEM AND I*~-

ENGINEERED SAFETY FEATURES ACTUATION SYSTEM SETPOINT METHODOLOGY I SALEM UN IT #12 I

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TABLE OF CONTENTS 1-*

II I SECTION TITLE PAGE 1

1.0 INTRODUCTION

I 3 2.0 COPelNATION OF ERROR COMPONENTS I 2.1 Methodo 1ogy 3 4

2.2 Sensor Allowances I 2.3 Rack Allowances 6 8

I* 3.0 3.1 RESPONSE TO NRC QUESTIONS Approach 8 Definitions for Protection System I 3.2 Setpoint Tolerances 8 NRC Questions 14 3.3 I

NOTES FOR TABLE 3-4 20 I

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---

~----------- - --* -- --

... - .. - ~.. *- - -*~

. -;:~.:......J-*~*-=-,_~,-r":'--* - - - - - - * - - ' - - - - --*

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1*: LIST OF TABLES 1*

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~

TITLE PAGE TABLE Tavg Channel Accuracy 15 I 3-1 16 3-2 Overtemperature AT Channel Accuracy I Overpower AT Channel Accuracy 18 3-3

,I Reactor Protection System/Engineered Safety 3-4 Features Actuation System Channel Error I Allowance 21 I 3-4A Planned Revisions to Table 3-4 25 I

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-:m:=~* _,._ .... -

---.~.;-::~~*""*-"""' __ ------;:;...**--

. ---.,.._,,,-.,;...,... ;;;;;._...;..;.... ~--"'-*--* ~-------* __..: :-_ - . *-.:.....*~- ._.. --

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1.0 INTRODUCTION

,~

The Salem No. 2 full power operating license contains Condition 2.c(S) which I' requires PSE&G to submit a response to a series of NRC questions on setpoint

~thodology. This document contains the Westinghouse _IT'ld Public Service I Electric and Gas response to those quest;ons.

• I The 1nfonnation desired pertains to the various instrument channel components' analysis assumptions, 1.e., a channel breakdown and values, for the Reactor I Protection System (RPS) and the Engineered Safety Features Actuation System

.1 (ESFAS). Some of the infonnation requested is already available in public documents, e.g., Chapter 14 of the Safety Analysis Report. The rest of the I infonnation.has not been released and is drawn from equipment specifications or analysis assumptions. This infonnat;on is considered proprietary by West-I inghouse and is noted as such.

I The basic underlying assumption used is that several of the error components I. and their parameter assumptions act independently, e.g., [

J ta,c. This allows the use of a statis-I tical sunmation of the various breakdown components instead of a strictly arithmetic sunmation. A direct benefit of the use of this technique is in-I creased margin in the total allowance. For those parameter assumptions known I to be interactive, the technique uses arithmetic sunmation, e.g ** [.

J ta,c. The explanation of the overall approach is provided

• I .

in Section 2.

I Section 3 presents the 1nfonnation requested along with three examples of in-dividual channels, Ta,g, Overtemperature AT, and Overpower AT. Also located I*

I;

---:¥ ,-*n**h'*n*e or 2

I 1n this section are descriptions, or definitions, of the various parameters 11=-

used. This insures a clear understanding of the breakdown presentedi in I: nearly all cases a significant margin exists between the statistical slllln!.-

tton and the total allowance.

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~ ---- . -- - - ---* ,. *-* -**.. . .. *-;'*

• I 3 2.0 COMBINATION OF ERROR COMPONENTS 11=-

• ! 2.1 Methodology The methodology used to combine the *rror components for a channel 1s basi-

• I cally the appropriate statistical combination of those groups of components

which are statistically independent, t.e., not tntera2t1ve. Those errors I which are not independent are sunned arithmetically into groups. The groups

II themselves are independent effects which can then be systematically combined.

I The methodology used for this combination ts not new. Basically it is the

[. J ta ,c ,e which has been utilized in

,I other Westinghouse reports. This technique, or other statistical approaches of a similar nature, have been used in WCAP-9180(l) and WCAP-8567( 2). It should be noted that WCAP-8567 has been approved by the NRC Staff thus noting 1: the acceptability of statistical techniques for the application requested.

It should also be recognized that the approach used in this document was sub-I mitted on the O. C. Cook Unit No. 2 Docket (50-316) and approved by the NRC Staff in a letter dated February 12, 1981. Thus it can be seen that the use I of statistical approaches in analysis techniques ts becoming more and more I widespread.

The relationship between the error components and the total statistical I error allowance for a channel ts, I. [

(Eq. 2.1)

I' (1) Little, C. C., Kopeltc, s. D., and Chelemer, H., *consideration of Un-certainties 1n the Specification of Core Hot Channel Factor Limits.*

1* WCAP-9180 (Proprietary), WCAP-1981 (Non-proprietary), September, 1977.

(2) Chelemer, H., B°""1ln, L. H., and Sharp, D. R., *Improved Thennal Design Procedure, *wCAP-8567 (proprietary), WCAP-8763 (Non-proprietary), July, 1975.

I*

I

• ,,.,.*tr-*--*----....-..*-*;;....*-.;.;,;*-*-*----;.;;*

I 4 1=-

where:

PMA PEA

• Process Measurement Accuracy

• Pri111ry Element Accuracy

• 1* SCA SD

• Sensor Calibration Accuracy

• Sensor Drift STE

• Sensor Temperature Effects I SPE

• Sensor Pressure Effects RCA

• Rack Calibration Accuracy

.I RCSA s Rack Comparator Setting Accuracy RD

• Rack Drift I RTE EA

• Rack Temperature Effects

• Environmental Allowance I As can be seen in Equation 2.1, ~ _J ta,c allow-1* ances,!re interactive and thus not independent. The C:. Jta,c is not necessarily considered interactive with all other parameters, but as an I added degree of conservatism is added arithmetically to the statistical sum.

I 2.2 Sensor Allowances Four parameters are considered to be sensor allowances, SCA, SD, STE, and I SPE (see Table 3-4). Of these four parameters, two are considered to I be independent,(:

J ta,c. [

J ta,c, and two are considered interactive~

J ta,c are considered io be independent due to the I manner 1n which the 1nstr1.111entation 1s checked, i.e ** the instrumentation is

[

I :J ta,c. An example of this would be as follows:

I [

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. -=:===~~~--.;;.~ -~-=-*----'--~--~* ------~ -~ .... -*. - .. ..:..--~---- -"'"*-*- *' _. *~** - -- . *. ~ **-* .. -*

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[

.1

.I  :

J ta,c. [ ] ta,c are considered to be interactive for the same I reason that [ ] ta,C: are considered independent, i.e., due to the I manner in which the instr1.1Rentation is checked. [:

I I .J ta,c. Based on this reasoning, I I:  :::Jta,c have been added to fonn an independent group which is then factored into Equation 2.1. An example of the impact of this treatment is; I for Pressurizer Water Level-High (sensor parameters only):

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Using Equation 2.1 as written gives a total of; I ta,c

-1*

.

• 1.66 percent

• 1 I

6

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• _ Assuming no interactive effects for any of the parameters gives the follow-

. ing ~sults:

1:* rta,c

,,

• 1.32 percent (Eq. 1.2)

I Thus it can be seen that the approach represented by Equation 2.1 which accounts for interactive parameters results tn a more conservative sumnation

~1 of the allowances.

I 2.3 Rack Allowances Four parameters, as noted by Table 3-4, are considered to be rack allowances, I ~CA. RCSA, RTE, and RD

• Three of these parameters are considered to be 1** interactive (for much the same reason outlined for sensors in 2.2), [:

Jfa,c. [

I I

I I

I J ta Ille. Based I *o:

on this logic, these three factors have been added to fonn an independent group.. This group ts then factored into Equation 2.1. The impact of this I

,. approach (fonnation of an independent group based on interactive components) 1s significant. For the same channel using the same approach outlined in

,* Equations 2.1 and 2.2 the following results are reached:

,I:.

,. i

---

==c...::-:...= -- . - - - -- -- ----- **-*-; !

i 7

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• I 115ing Equation 2.1 the result 1s:

I

-1 I = 1.82 percent II Ass&111ing no interactive effects for any of the parameters yields the follow-ing less conservative result; I ta,c I (Eq. 2.3)

= 1.25 I percent Thus the impact of the use of Equation 2.1 is even greater in the area of I rack effects than for the sensor. Therefore, accounting for interactive I effects in the statistical treatment of these allowances insures a conservative result.

I Finally, the PMA and PEA parameters are considered to be ~ndependent I of both sensor and rack parameters. PAA provides . allowances for the non-

~nstrvnent related effects, e.g., neutron flux, *calorim&tric :*power error ISSL111Ptions, fluid density changes, and temperature stratification assump-

• tions. PEA.accounts for *rrors due *to meterfng devices, such ts elbows and venturies. rhus, these parameters have been statistically factored into

• Equation 2.1.

I 8 1*: 3.0 RESPONSE TO NRC QUESTIONS 1*

., 3.1 Approach As noted in Section One, Westinghouse utilizes a statistical s&111111tion of

the various components of the channel breakdown. Thi~ approach is valid I where no dependency is present. An arithmetic sunmation is required where

• 1 an interaction between two parameters exists, Section Two provides a more detailed explanation of this approach. The equation used to determine the I 111argin, and thus the acceptability of the parameter values used, is:

ta,c I [

I (Eq. 3. lYJ where:

I

• TA = Total Allowance , and all other parameters are as defined for Equation 2.1.

I Tables 3-1 through 3-3 provide examples of individual channel breakdowns and I margin calculations for Tavg., Overtemperature 6T, and Overpower 6T. It should be noted that only those channels which Westinghouse takes credit for

• I in the analysis are provided with detailed breakdowns. For those channels I not assumed to be primary trips, there are no Safety Analysis Limits, thus no Total Allowance or Margin can be determined.

I, 3.2 Definitions for Protection System Setpoint Tolerances I To insure a clear understanding of the channel breakdown YSed by Westinghouse 1n this report, the following definitions are noted:

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1. Trip Accuracy The tolerance band containing the highest expected value of the differ-ence between (a) the desired trip point value of a process variable and I (b) the actual value at which a comparator trips (and thus actuates some desired result). This is the tolerance band, in eercent of span, within I which the complete channel must perfonn its intended trip function. It I includes comparator setting accuracy, channel accuracy (including the sensor) for each input, and environmental effects on the rack-mounted I electronics. It comprises a11 instrumentation errors; however, it does not include process measurement accuracy.

I

2. Process Measurement Accuracy

.I Includes plant variable measurement errors up to but not including the I sensor. Examples are the effect of fluid stratification on temperature measurements and the effect of changing fluid density on level measure-I ments.

3. Actuation Accuracy Synonymous with trip accuracy, but used where the work "trip" does not 1 apply.

4. Indication Accuracy The tolerance band containing the highest expected value of the differ-ence between (a) the value of a process variable read on an indicator or

- recorder and (b) the actual value of that process variable. An indica-tion 1111st fall within this tolerance band. It includes channel accuracy, accuracy of readout devices, and rack environmental effects, but not process measurement accuracy such as fluid stratification. It also assumes a controlled environment for the readout device.

1 i 10 1*~

5. Channel Accuracy 1*

The accuracy of an analog channel which includes the accuracy of the primary element and/or transmitter and inodules 1n the chain where cali-I bration of 110dules fntennediate tn a chain fs allowed to compensate for errors in other lllOdules of the chain. Rack environmental effects are I ..*

not included here to avotd duplication due to dual inputs, however, nonnal I environmental effects on field mounted hardware is included.

6. Sensor Allowable Deviation I The accuracy that can be expected in the field. It includes drift, tem-I perature effects, field calibration and for the case of d/p transmitters, an allowance for the effect of static pressure variations.

Tff'e tolerances are as follows for the original sensors installed in the 1* Westinghouse supplied systems:

a. Reference (calibration) accuracy - r Jtabc percent unless other data indicates more inaccuracy. This accuracy is the SAMA refer-ence accuracy as defined in SAMA standard PMC-20-1-1973(l).

b. Temperature effect - C -:J tabc percent based on a nominal temper-ature coefficient of L :J tabc percent/100°F and a maximum assumed change of so°F.

c. Pressure effect - usually calibrated out because pressure is con-stant. If not constant, nominal ( J tabc percent is used

• Present data indicates a static pressure effect of approximately

( J tabc percent/1000 psi.

d. Drift - change in input-output relationship over 1 period of time at reference conditions (e.g., [ J ta ,c _

[ :J tabc of span).

The above values are based on Westinghouse te~t data.

---::-.;j---..i_ _ _....._ _ _ _ _ _ _ __

11

• 1.

1*-_ PSE&G has replaced the original Westinghouse supplied sensors with Rosemount sensors in the following protection channels:

1* Pressurizer Pressure - Low Reactor Trip

~ :1 Pressurizer Pressure - High Low Trip System Pressure - Turbine Trip Pressurizer Pressure - Low Safety Injection .

I Differential Pressure Between Two Steamlines - High Steam Flow in Two Steamlines - High

• 1 Steamline Pressure - Low The tolerances for the sensors in the above protection channels, based on I Rosemount specifications. are as follows:

1. Reference (calibration) accuracy is +/-.25 percent. This is the reference I

accuracy as defined in SAMA Standard PMC-20-l-1973(l).

b. Temperature effect - +/-0625 percent based on +/-1.25 percent/100°F and maximum assumed change of 50°F.

I c. Pressure effect - usually calibrated out because pressure is constant.

If not constant. nominal +/-.625 percent based on a static pressure effect I of +/-1.25 percent/1000 psi.

I d. Drift - Change in input-output relationship over a period of time at ta,c reference conditions (e.g. [ J ) - +/-.25 percent of I upper range limit for six months.

I PSE&G is planning to install Rosemount transmitters with the above tolerances into the following protection channels:

-I Pressurizer Water Level - High Steam Generator Water Level Low Low

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Steam Generator Water Level - Low Containment Pressure - High I~ Containment Pressure - High High Steam Generator Water Level - High High

• a Table 3-4A is included herein to reflect the planned changeout of pre-sure transmitters in the above channels *

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7. Rack Allowable Deviation The tolerances are as follows:

., a. Rack talibration Accuracy The accuracy that can be expected during a calibration at ~ference conditions. This accuracy is the SAMA reference accuracy as defined I in SAMA standard PMC-20-1-1973(l). This includes all 110dules in a rack and 1s a total of ( J tabc percent of span assuming the I chain of modules 1s tuned to this accuracy. For simple loop.s where a power supply (not used as a converter) is the only rack sdule, I This accuracy may be ignored. All rack modules individually must I have a reference accuracy within [ J tabc percent.

b. Rack Environmental Effects I Includes effects of temperature, h&111idity, voltage, and frequency changes of which temperature is the most significant. An accuracy I of~  ::J tabc percent is used which considers a nominal ambient I temperature of 70°F with extremes to 40°F and 120°F for short periods of time.

I c. Rack Drift (instrument channel drift) - change in input-output rela-tionship over a period of time at reference conditions (e.g., [

I  ::J ta,c) - +/-1 percent of span.

I d. Comparator Setting Accuracy Assuming an exact electronic input, (Note that the channel accuracy I takes care of deviations from* this ideal), the tolerence an the pre-cision with which a comparator trip value can be set, wititin such practical constraints as time and effort expended in making the

setting.

{l) Scientific Apparatus Manufacturers Association, Standard PMC-20-1-1973,

• Process Measurement and Control Tenninology.*

I

13 I

1--.

,. The tolerinces are as follows:

(a) Fixed setpoint with a single input - r:- -:J tabc percent accuracy.

This ass&111ed that comparator nonlinearities are compensated by the setpo1 nt.

I (b) Dual input - an additional[ J tabc perc~nt must be added for I comparator nonlinearities between two 1npu.ts. Total [ J tabc percent accuracy.

I Note: The following four definitions are currently used 1n the Standardized I Technical Specifications (STS).

I 8. Nominal Safety System Setting The desired setpoint for the variable. Initial calibration and subsequent I recalibrations should be made at the nominal safety system setting ("Trip Setpoi nt" in STS)

• I

9. Limiting Safety System Setting I A setting chosen to prevent exceedfog a Safety Analysis Limit ("Allowable Values" in STS). (Violation of this setting represents an STS violation).

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10. Allowance for Instrument Channel Drift I The difference between (8) and (9) taken in the conservative direction.

I

, 11. Safety Analysis Limit The setpof nt value assumed in safety analyses.

12. Total Allowable Setpo1nt Deviation Same definition as 9, but the difference between 8 and 12 encompasses

• (_ J. ta,c

14 I

1*:

,. 3.3 NRC Questions The 1nfonnatfon requested by the NRC for each channel 1s:

1. What is the technical specification trip setpoint value?

2. What 1s the technical specification allowable value?

I 3. What 1nstninent drift fs assumed to occur during the interval between I technical specification surveillance tests?

4. What are the components of the cl111ulative instrument_ bias (e.g., instru-I ment calibration error, instrunent drift, 1nstrl111ent error, etc.)?

5. What is the margin between the sum of the channel instrumentation error I allowances and the total instrumentation error allowance assumed in the I accident analysis?

I The Westinghouse and PSE&G response to these questions is:

a. The response to Question 1 will be found as Column 14 of Table 3-4 in I this section.

b. Column 13 of Table 3-4 provides the information requested in Question 2.

I c. The instrument drift assumed is the difference between the trip setpoint I and the allowable value in the technical specifications, this can be found as Column 11 of Table 3-4.

I d. The bulk of Table 3-4 provides the breakdown values required by Question 4.

e. The margin requested by Question 5 is noted in Column 17 of Table 3-4.

I It should be remembered that responses are provided only for I those channels for which credit is taken in the accident analysis. Again this is due to the fact that Question 5 cannot be answered ff the channel is not a I primary trip.

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TABLE 3-1 Tavg Channel Accuracy I Parameter Allowance'*

I Sensor Calibration I [ Jta,c tabc Sensor Drift I C: :Jta,c I Comparator One input I Rack Calibration I

I Rack* Accuracy Tavg channel I Total Tavg Rack Temperature Effect I Rack Drift I Process Measurement Error

[ Jta,c I

[

• in percent of span.

The margin, based on Equation 3.1, 1s calculated as follows:

J tabc 1* + C: ::J tabc. The Total Allowance is 4.0i, thus the margin is I ~  ::J ta,b,c of span *

.I *

---

~--~------------------------------~--;;;;.,*-..;..*

-- -- --* - ~*"r **-** ---** - * - * * * .. **-**-*--*-

...:.*....;;-~* *....;;-~~

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TABLE 3-2

.1**.

Parameter Overtemperature AT Channel Accuracy Allowance*

Sen~ Calibration I tabc I Sensor Temperature Effect I [

Sensor Drift I [

Rack Calibration I

I [ Rack Accuracy AT Channel I Tavg Channel Total I AT Channel Tavg Channel I Comparator Two inputs I Rack Temperature Effects Rack Drift I AT Channel Tavg Channel Calorimetric Error (used to calibrate Al)

• I [ Jta,c

-Process Measure.11ent Error

.I [ Jta,c I .. - *in percent of span, (100°F span

• 150% power)

I l I; ...

• --~~.-...--.---------~-- --- *~---*------

17 I

1--*

TABLE 3-2 (Cont'd)

'I The Margin, based on Equation 3.1, is calculated as fo11ows:

I ..

I [

• ( ] ta,c. The Total Allowance is 7.0S, thus the 11111rgin is [ ) u,c of I span.

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• 1*

• 1 I

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1*-. TABLE 3-3 Overpower AT Channel Accuracy 1*

Parameter I Sensor Calibration

[

Jta,c tabc I Sensor Drift

[ Jta,c I Rack Calibration I

I

[ Rack Accuracy AT Channel I Total Tavg Channel I ATChannel Tavg Channel I Comparator Two inputs Rack Temperature Effect I Rack Drift AT Channel I Tavg Channel calorimetric Error (used to calibrate AT)

I [

Process Measurement Error Jta.c

-I [. J**t I *tn percent of span, (100°F span

• 150S power) 1***

I l ....

19 I

1**.

TABLE 3-3 (Cont'd)

The .. rg1n based on Equation 3.1 1s calculated as follows:

I Jtabc I [ tabc 0 f

• [ *j tabc. The Total Allowance 1s 4.5%, thus the margin 1s [ ]

I span.

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1*

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.l - _____ ._Jc.**- ___ ___;__.""-~---------*.. .,*!" - .~. -*-- ---

--~---;~-= -.. ;*.

20 I

1**. NOTES FOR TABLE 3-4 1*

(1) All values 1n percent span.

I (2) As noted 1n Table 14.1-3 of SAR.

(3) As noted 1n TabJe 2.2-1 and 3.3-4 of Westinghouse STS.

I (4) Included tn [

] ta,c I (5) Not used tn the Safety Analysis.

I (6) As noted tn Figure 14.1-1 of SAR.

(7) As noted tn Notes 1 and 2 of Table 2.2-1 of Westinghouse STS.

I I

(8)

(9)

[

Venturi.

1 ta,c (10) Not Westinghouse scope.

I (11) Included in [ :J ta,c (12) As noted tn Table 3.3-4 of Westinghouse STS.

I (13) Does not impact Safety Analysis results.

I (14) Trip setpoint function of note (12) plus 10%.

( 15) Inc1uded t n C :J ta* c I (16) Not found tn Table 14.1-3 of SAR but used in Safety Analysis.

(17) [

I :J ta,c I (18) [ ,.

I

- ta,c 1*

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• I. . >>.. <--a:_ .. -----*_ ....:::;c:::-....._x: 1 e *-----...--~-.-~---***-~-. ~*- ...

- - . * - "T *

.' - I ......... ** *

• TABLE 3-4 REACTOR PROTtCTIOtt SYST£MfENGIHEERED SAFETY FEATURES ACTUATION SYSTEM CHANNEL ERROR ALLOWNtCE l  ! l  !  !

~

! ... 1..

a,c (PMA)

Process (PEA)

Prh1ary

"' (SCA) (SPE)

Pressure (ST£)

Temperature (SD)

(EA)

Envh,...ntal (RCA)

Ca H brt tt Ott Measurellll!nt Elewient Ca11bratfon Drift I 1) Allowance Ill Accqr_a_n_(_lJ Accurac,x {1) Effects l ll Effects Ill Prvtect1on Channel ~~_curac,x l 1) Accuracl {1)

,_... bft9e* Neutron Flux-H1gh*Setpo1nt Power Range. lleutron Flitx-low Setpoint Power R1nge. "eutron Flux-Htgh Postt1ve Rate Power Range. "eutron Flux-High llegathe Rate lnte.-.d1ate Range. Neutron Flux Source Range. lleutron Flux OVerta.perature AT aT Channel Tavg Ch1nnel Pressurizer Pressure Channel I

averpower AT AT Channel

• T Channel Pres sun rer Pressure-low Rea@t8r Trt p Prossurt,.r Prossun!-fftgh Pressurizer Weter Level-High Loss of Flow Ste* Generator Water Level - Low-low Steall/Feedwater Flow MfSllltch_ Ste1111 Flow

\ Feed Flow Ste.. Generator Water Level-low Undervolt.age - RCP underfrequency - RCP .

I Low Trtp S1stet11 Pressure-Turbine Trip .... ....

!'\)'

~

I l Turbtne Stop Valve Closure-Turbtne Trip Contat1111ent Pressure-High Pressurtzer Pressure-LI* Safety lnjec.

I Dtfferent1a1 Pressure Between Two Steamltnes - High [ J 11 11 I

I

.. ~ .. --* ......... --*~ _._ ...______ ._,_,,_........ *~ ...... + * -

TABLE 3-4 (Cont'd}

1 1! n J!

!!ct l!!!l!t.d Electrofttq J~

(IESA) - Chlnnel SlfttJ STS STS CollfaNW S.ttt"I AmnCI (1) 1...,.,...

(int)

[ffecU (1)

(llJ)

Qrtft (1)

AMlysts tt*tt (2)

All.,...blt Value (3)

Trtp Seteotnt (3)

Total Allowance (1) suttsttcal Allowance (1) Ml!'ltll (1) 1.0 1181 RTP UM RTP 10~ RTP 7.5 1.0 351 RTP 261 RTP 251 RTP 8.3 1.0 _(5} 5.51 RTP S.M RTP 1.0 5.51 RTP S.M RTP 4.2 301 ATP 251 RTP 3.0 1.3 x 105 cps 1.0 x 105 cps 1.0 7.0 functton (6) function (7) functton (7)

}1.0 l

I 1.0 1.0 1.0 (5) 1845 pstg function ( 7) 1855 pstg function ( 7) 1865 pstg 2.5 1.0 2410 pstg 2395 psig 2385 pstg 3.1

.:1 1.0 (5) 931 span 921 span 2.5 0.8 871 dest9n 891 destgn 901 destgn 1.0 OS span (16) 171 span 181: span 18.0 0.6 4M steamflow (5) 42.51 stearnflow 0.5 251 span 5.0 1.0 201 span 241 span 681 bus volt. (13) 651 bus volt. 701 bus volt. s.o 0 5 56.4 Hz 56. 5 Hz 1.3 0 1.3 53.9 Hz (16) 45 psig ""

gi 45 pstg 151 open 151 open

[ J 0.9 7.9 psig 4.5 pstg 4.0 pstg 6.5 J 1.0 1735 psig 1755 pstg 1765 pstg 3.8 0.5 (5) 112 pst 100 pst

.. .. . . * ., -** ......... -******* *r * ~

TABLE 3-4 (Cont'd)

!*. l.  !

1 (PEA) (EA) (RCA)

(PM) (SCA) (SPE) (STE) E"'t.,......ta1 C.ltbntl*

Process PriNry TeaperatuN (SO) f!IHSU'9ent Elewient caltbratfon Pressure t.f'fccts U) Drtft UJ AJJ*nc* cU _,.Accme1 Ul Accuracy ( 1) Accuracy ( 1) __ Effects ( U Accuracy (I)

Protectton CMnne1 s*tMI Flow tn T.o Stemltnes

• Dftgh T . *Low-low s9"1tmt Pressun - Low eonutrmet1t Pressure - Htgft-Mtgtl

, Ste* Generator Miter Len1

• IHgh-fltgh N

c..i

.. "!. *P ~* * * * - * * **,

TABLE 3-4 (Cont'd) 15 us. 17

!l l!  !!  !!

1 19.

bet ltMtt.d Eltctrontct ta,c

• a,c Chann1l i (IESA) STS STS C011P1retor (KT£) Safety Total Suttsttcal I

(RD) Analysis AllCNlble Trtp s.tttnv lt!llll)eretuN Yalue {3) Setpot nt ( 3) Allowance (l) Allowance (l)

~nsx Ul Effects (1} Drtft (l) Lt*tt (Z) "'"" (1) o.s 0.6

\ (5) function (12) function ( 12)

I 0.6 2.0 ts> 541°F 543°F 8.3

.1 I 1.3 0.9

~oo pstg 26.7 pstg 480 psig 24 pstg 500 psig 23.5 pstg 5.3 75S span 68S span 67% span 8.0 1.0 I.

.............. *-* -*. -* ---~~-~-*-*****- ... ;,.

TABLE J-4A PLA""ED REVISION TO TABLE 3-4 1  !

(P~A) a,c.

Sensor

!. 'l

( """) (EA) (RCA)

Process Pr11111ry (SCA) ('=: ':") (STE)

Enwt.,,...,.tal taltbntton Calibration Pressure Temperature (SD)

Measure111ent

• Element Drift (1) Allowance ll} Accurag ll)

Accuracy ( 1) Accuracy ( 1) Accuracy (1) Effects l ll Effects ll}

Protection Channel 0.25 0.625 0.625 0.5 Pressurher Water Level - High 0.25 0.625 0.625 0.5 +13.0 Stelll Generator Water level - Low-low 0.25 0.625 0.625 0.5 Ste.. Generator Water level - Low 0.25 0.625 0.5 Contahmnt Pressure - High 0.25 0.625 0.5 Conta11111ent Pressure - H1gh-H1gh 0.25 0.625 0.625 o.s Ste.. Generator Water lewel - H1gh-H1g I

I I

-**- - - - - - -* - - - - - - - - -*- -

• Ill -~

. .... . .. . . **-*- . . . ... . ... *-*-** ..... *.* . .. . . . . . . . . . . . . . . . . *~* .. , ....... - ... - , . - - - - ......* * - - * - : ......... I' .

TABLE 3-4A (Cont'd) 12 13 l! !1 16 17 ...

!  !!. 1!

ta,c ~

Rid """tH Electrvntcs ta,c

-. (llCSA)

(RTE) Safety STS STS Channel CClllPI re tor Stathttcal Setting Tape... tUN (RD) Analysts Allowable Trtp Total llJ L1m1 t l2! Value (3! Setpo1nt (3) Allowance (1) Allowance (1) Margtn (1)

Accuncx lll Effects ll! Drtft 1.0 (5) 931 span 921 spin 1.0 OI span 171 span 181 span 18.0 1.0 20I span 241 span 251 span 5.0 0.9 7.9 pstg 4.5 pstg 4.0 pstg 6.5 0.9 26.7 pstg 24 pstg

• 23.5 pstg 5.3 1.0 751 span 681 span 671 span 8.0 I' 1 I

I I

I I

l I

,_ -I.

I