L-04-153, Westinghouse Document Number ITS2898, Revision 0, 7300 NRA 6D30262, Time Response Failure Analysis.

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Westinghouse Document Number ITS2898, Revision 0, 7300 NRA 6D30262, Time Response Failure Analysis.
ML043490501
Person / Time
Site: Beaver Valley
Issue date: 01/31/2004
From:
Westinghouse
To:
Office of Nuclear Reactor Regulation
References
L-04-153 1TS2898
Download: ML043490501 (27)


Text

Letter L-04-153 Enclosure 2 Attachment E Westinghouse Document Number ITS2898, Revision 0 Time Response Failure Analysis (for the Westinghouse 7300 5NRA Card)

Note: The attached document is Westinghouse non-proprietary

Westinghouse Non-Proprietary Class 3 7300 NRA 6D30262 TIME RESPONSE FAILURE ANALYSIS 1TS2898 Revision 0 January 2004 Westinghouse Electric Company LLC P.O. Box 355 Pittsburgh, PA 15230-0355 0 2004 Westinghouse Electric Company LIC All Rights Reserved ITS2898

TABLE OF CONTENTS 1.0 Introduction and Purpose 4 2.0 References 4 3.0 Component Analysis Method 4 4.0 Component Analysis Results 5 5.0 Detailed Analysis and Results 6 6.0 Conclusion 7 MTS289M

7300 Series RTD AMPLIFIER CARD (6D30262) NRA 1.0 Introduction and Purpose There are sev'eral nuclear control and protection systems built using the 7300 series PC cards. During normal system maintenance, a portion of the system is taken offline and calibrated using a DC calibration method, and then a subsystem time response test Is performed.

This report has two purposes. One purpose is to determine the component failures on the NRA card which could affect the system or card time response, and which are undetectable by the system DC calibration procedure. The second purp6se is t6 provide a summary of the results from the test procedure Ila Cand to compare those results with the previous NRA card [ 3a, which are referenced in [ ]ac. The new NRA card will be shown in this analysis to have a quicker time response than the previous NRA card.

2.0 References

1. [ .. c
2. [.c
3. Ia c 3.0 Component Analysis Method To identify failures that will result in an increase in the time response of the card, a Failure Modes and Effect Analysis (FMEA) was performed. For each component on the circuit card, failure modes and their associated effects were identified. From now on in this document the term failure Is used to describe a component that is shorted, open or changed in value. The types of failures that were analyzed are listed for the following components that are used in 7300 cards.

Resistor- A resistor can fail [ ]PC.

Diode - A diode can fail [ alc Zener Diode - A zener diode can falll Transistor- Transistors can fail { Ia.

Op Amp or other linear IC -The Input stage of op amps and other linear devices can [

apc 1S2898

the output losses part of its drive capability. They can also have a failure [

3axc Digital IC - A digital IC can fail to [ Ja.c Capacitor - A capacitor can fail I la.c Inductor- An inductor can fail [ ]a.c 4.0 Component Analysis Results Components are in one of three categories. The first category Is components that could fail or change in value and [ ]8C the time response of the card without being [

] If a component falls into this category, then the [ rc. The second category is components that could fail and have 1 Ja.

Category two [ la c in the calculations of total time response because if the component fails there is still [ la on the time response. The third category is components that could fail and have an [

]2c the time response. Category three [ ]3.C in the calculations of total time response because if the component fails then the [ la c will be changed by so much that the card will not be able to be [

]anc.

Category 1:

Components that could fail and [ la3c the card time response and are not

[ ]~

Capacitors: [ aC.

Resistors: a'c Category 2:

As previously mentioned, there are many components that [

]I.C the time response of the circuit.

The [ ]azc the time response of this card because they are [ ]a.C of the output. If a component is

[ Jac¢ signal then there can [

ra ¢. There could be a loss of [

la but there will [

The following Is a list of components that are Included in this category.

Capacitors: 1 Jac Resistors: [ ]a c Diodes: [ ]atc Inductors: [ jazc IC: [ C Transistor. ]3.c ITS2893

The following is a list of components that [ jayc in other parts of the NRA circuit:

Capacitors: [

r3c Resistors: 1 Inductors: [ ]apc Category 3:

All other components are in this category. Ifthese components fail [

Jarc. Therefore these components will [

1a¢. These components will [

Iac card.

The following is a list of components that affect the 1 Ialc:

]a,c Resistors:

Ia.c IC: [

Transistors: [ Iac Diodes: I Ia.c 5.0 Detailed Analysis & Results I

1T32898

a,c ac Figure 1 - NRA Card [ Iac ITS289S

la-c Figure 2 - NRA Card [ Iac

-.c Figure 3 - NRA Card [ ac 1TS2898

- ;c Figure 4 - NRA Card [

Figure 5 - NRA Card [ Iae ITS2898

-- Ia-.c a,c Figure 6 - NRA Card [

Figure 7 - NRA Card [ Ia,c ITS2S

ac Figure 8 - NRA Card [ I3,c Figure 9 - NRA Card [ Iac I1S=

Sac Figure 10- NRA Card [ ]ac

a. c Figure 11 - NRA Card [ Ia~c ITS2898

-I a,c Figure 12- NRA Card [ Ia,c I a,c Figure 13 - NRA Card [

  • ITS2898

a,c Figure 14-NRACard[ ]a,c a1.

c

]a,c Figure 15 - NRA Card [

IT2S92

IaC Figure 16 - NRA Card [ ]agc Below is a summary of the time response of each figure above. The longest time response will only be looked at when comparing [

Iac Component Total Time Response Time Response due to the component change I

]a,c ITS2B9S

6.0 Conclusion I

lac 12898

Letter L-04-153 Enclosure 2 Attachment F Westinghouse Document Number 1TS2899, Revision 0 NRA Card Time Response Test Procedure (for the Westinghouse 7300 5NRA Card)

I , " . I UIi i , ' -' -'" z Note: The attached document is Westinghouse non-proprietary

Westinghouse Non-Proprietary Class 3 7Tme Response Tesf Procedure 6D30262 7300 NRA 6D30262 NRA Card Time Response Test Procedure 1TS2899 Revision 0 January 2004 Westinghouse Electric Company LLC P.O. Box 355 Pittsburgh, PA 15230-0355 0 2004 Westingbouse Electric Company LLC All Rights Reserved 1TS2899 I

Time Response Test Ptocedure 6D00262 Revision History:

1/2004 Initial Issue Daniel Shubert 1TS2899 2

lime Response Test Procedure 6D30262 7300 Series RTD AMPLIFIER CARD (6D30262) NRA 1.0 Test Objectives This test procedure will provide numerical results on the time response for the 7300 Series RTD Amplifier (NRA) Card. it will evaluate the time response when [

rt. The l

]ac in the value of the component. Time response results will be determined by

[ jS.C and viewed by an oscilloscope. The [ a will then be compared to measure how long it takes 2.0 References

1. 1 c
2. 1

]a~

3. l ]awt 3.0 Test Equipment 3.1 The following test instrumentation, equipment and fixture are required in order to perform this test procedure:

-7300 universal test box

-Multichannel oscilloscope (capable of storing traces)

-Fluke Digital Multimeter or other high precision multimeter (with 4-112 digits and accuracy specified to /l 0.01% of span.

-Capacitance Meter

-Resistance RTD Decade Box

-All other equipment used In the [ rfor the NRA card 1TS2899 3

Time Response Test Procedure 6D30262 4.0 Functional Test 4.1 Perform functional test procedure, I rc 4.2 After completing the functional test procedure [

PC I

Make the following connections to the universal test box pins:

P8~C 4.3 I3rc 4.4 Iaxc 4.5 1 lawI 4.6 1

'C 4.7 1 r

4.8 [

ITS2899 4

T7me Response Best Procedure 6D30262 JA.c 4.9 1 I8.c 4.10 [

4.11 l

)a.c 4.12 1 Ialc 1TS2899 5

Time Response Test Procedure 6D30262 5.0 Data Sheet 4.1 Passed - Failed _

4.4 Time Response of NRA Card (+ step input) _ _ms 4.5 Time Response of NRA Card (- step input) ----- ms 4.6 [ lx' yes_ no Time Response of NRA Card (+ step input) _ _ms Time Response of NRA Card (- step input) ___ms 4.7 [ )ac yes no Time Response of NRA Card (+ step input) _ _ms Time Response of NRA Card (- step input) ___-ms 4.8 [ ]' yes _ no Time Response of NRA Card (+ step input) ___--ms Time Response of NRA Card (- step input) _ _ms 4.9 1 I" yes _ no_

Time Response of NRA Card (+ step input) _ _ms Time Response of NRA Card (- step input) ------_ms 4.10 ] c yes_ no Time Response of NRA Card (+ step input) _-----ms Time Response of NRA Card (- step input) ms 4.11 [ ]" yes - no Time Response of NRA Card (+ step input) _ _ms Time Response of NRA Card (- step Input) _ _ms 4.12 [ loC yes _ no _

Time Response of NRA Card (+ step input) _ _ms Time Response of NRA Card (-step input) _ _ms 1TS2899 6

Letter L-04-153 Enclosure 2 Attachment G Westinghouse Drawing 6D30262, Revision 0 (for the Westinghouse 7300 5NRA Card) 2W Note: The attached document is Westinghouse non-proprietary

Letter L-04-153 Enclosure 2 Attachment H Westinghouse Drawing 6D30262, Revision 1 (for the Westinghouse 7300 6NRA Card)

Note: The attached document is Westinghouse non-proprietary