ML20040A188

Human Factors Evaluation of Wolf Creek Panels RL013 & RL014

ML20040A188
Person / Time
Site:	Wolf Creek
Issue date:	01/05/1982
From:	Avery L, Weiss C ESSEX CORP.
To:
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ML20040A187	List: ML20040A186 ML20040A188
References
NUDOCS 8201200492
Download: ML20040A188 (13)

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llUMAN FACTORS EVALUATION OF Tile WOLF CREEK PANELS RL013 AND RL014 4

Prepared for:

Nuclear Projects, Inc.

5 Choke Cherry Road Rockville, Maryland 20850 3

Prepared by:

Larry Avery Candace Weiss Essex Corporation 333 North Fairfax Street Alexandria, Virginia 22314 January 5,1982 1

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f TABLE OF CONTENTS

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Pap,e EXECUTIVE SUMM ARY i

i 1.0 INTitODUCTION 1

2.0 APPROACil 1

I 3.0 R ESU LTS 2

4.0 IRECOMM END ATIONS 3

APPENDIX A - IlUMAN ENGINEERING FINDING SUMM ARY I

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i EXECUTIVE SUMM AliY C

t From November 1981 to December 1981, the Essex Corporation of Alexandria, Virginia performed a human engineering evaluation of Wolf Creek control panels RL013 and RL014. Data were collected in the control room of Wolf Creek and from photographs f

taken of the control panels. The evaluation was primarily conducted by using checklists consisting of statements drawn from NUREG/CR-1580 and NUREG-0700. The operators' l

insights into the functioning of the systems also proved a valuable source of information.

The objectives of the evaluation were to perform the following:

I Document any deviations from the checklist items on panels RLO!3 o

and RL014.

o Recommend potential backfits for each deviation identified.

Prioritize the deviations in terms of criticality and need for backfit.

o Each problem was reported as an HEF (Human Engineering Finding) Report and was O

submitted to SNUPPS for review. All HEF reports were reviewed by the project engineer and the chief project engineer. The primary human engineering findings pertained to the following:

Annunciator labehng, organization, and prioritization o

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o Mimic design o Vertical meter location.

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1.0 INTRODUCTION

Essex previously conducted a control room evaluation of SNUPPS Callaway and Wolf I

Creek plants. At the time of this initial evaluation, the Wolf Creek control room was in its beginning construction stage.

As a result, the Callaway plant was used for data collection. The Wolf Creek control room incorporates the same design and same panel configuration as the Callaway control room with the exception of site-specific system

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panels, RL013 and RLO14.

Nuclear Projects, Inc. and Kansas Gas and Electric therefore have contracted with the Essex Corporation to perform a human engineering review of the Wolf Creek plant-specific panels RL013 and RL014 since they were not included in the previous SNUPPS report.

g 2.0 APPROACH The human engineering evaluation of panels RL013 and RL014 consisted of two basic phases: data collection and data reduction.

2.1 Data Collection Checklists administered on-site at Wolf Creek were used as the primary source of data collection. These checklists consisted of statements drawn from NUREG/CR-1580,

" Human Engineering Guide to Control Room Evaluation," and NUREG-0700, " Guidelines for Control Room Design Reviews."

The checklists were divided by component types (e.g., controls and displays) and by design surveys (e.g., coding and aathropometrics), and were administered on a panel and component level. Those checklists used to evaluate panels RL013 and RLO14 included the following:

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e Controls e Displays e Labels I

Coding e

e Annunciators 1

I Anthropometrics e

o Mimics Panel arrangement.

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2.2 Data Reduction Data reduction was divided into three parts: HEF reports, prioritization of HEF reports, and component sheets.

When a component or panel feature did not comply with a checklist item, the pertinent information was recorded on an HEF report form. Each HEF form consisted of the ccmponent nomenclature, item type, panel location, reference page number, operator errors that could result, and potential backfits.

To determine the priority of each HEF, the following questions were asked:

1.

If an error occurred, could plant safety be jeopardized or degraded?

2.

If an error occurred, could plant reliability be reduced?

3.

Would the plant's response to the error permit both of the following:

Provide the operator sufficient time to correct it, and y

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b.

Provide a positive warning (e.g., alarm) that the error was committed?

A priority for each HEF was determined using a prioritization formula and the answers to the above questions. A rating of I and 2 indicated a safety related HEF, while a rating of 3 and 4 indicated a reliability related HEF. A rating of 5 indicated that although the HEF identified something at variance with NUREG-0700 and NUREG/CR-1580, it had no impact on plant safety and reliability.

For every component and panel feature (e.g., mimics, labels) a component sheet was completed. Each component sheet included the following information: component type, component label, panel location, and a listing of all HEFs on file for the particular component.

3.0 RESULTS i

The evaluation of pancis RL013 and RL014 identified 29 design features that were l

discrepant with the guidelines found in NUREG-0700 and NUREG/CR-1580.

These I

findings are summarized in Appendix A.

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4.0 RECOMMENDATIONS

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Based on the HFE evaluation, Essex makes the following recommendations:

Priority I and 2 findings are safety related and require corrective o

action prior to going on-line.

Priority 3 and 4 findings are related to reliability and should be e

corrected to enhance plant operability and to minimize unscheduled down time.

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Priority 5 findings should be corrected to enhance the general control room design and to maintain consistency.

Because of the systems that were included in this HFE evaluation, only two HEFs were classified as potentially jeopardizing plant and/or personnel safety if an error occurred.

g Thus, the majority of problems are related to plant reliability and operator performance.

Essex recommends that the problems cited in this report be evaluated and that the necessary corrective actions be taken. This will improve the operaillity of the panels and 3

minimize the probability of operator errors.

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API'ENI)IX A llEF SUMM ARY O

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SUMMARY

ITEM DESCRIPTION LOCATION FINDING RECOMMENDED B ACKFIT PRIO9fTY NUMBER NUMBER l

1 Annunciators R LO14 The tiles, while grouped over Regroup so that all system tiles 3

the appropriate sy stems, are are located together.

not grouped such that a!! the Makeup, Circ % ater, etc., are together.

2 2

Annuncia tor s:

R L014 There is no prioritization Incor porate a

system of 3

ALL scheme curretly used for the prioritization, preferably 3 to 4 annunciators.

lesels.

This sy stem can use color, loca tion, or symbology.

The best may be a combination of color and location.

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Annunciators:

RLOl4 The annunciator labeling increase the width to ensure a 3

ALL LABELS character height-to-width ratio 5:3 ratio.

is appro xima tely 7:3, w hich exceeds the recommended 5:3.

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Annunciators:

RLO!4 The stroke width of the letters increase the stroke width to ALL LABELS is 0.04 inches. To conform to a 0.053 i.iches and use an stroke width to character appropriate height to achieve a height of 1:6 for a vie w ing 1:6 ratio of stroke w id th to 3

distance of 12 feet, the stroke height width should be 0.053 inches.

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Annunciators:

The annunciator ackno* ledge Relocate or install redundant 3

ANNUNCIATOR TILES R L014 control is located on R L D I S.

controls to ensure readability of ANNUNCI ATOR ACKNOWLEDGE RLOIS

% hen acknow ledging the all annunciator s from annunciators on RLOI4, the last acknowledge controls, couple of columns cannot be read.

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SUMMARY

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SUMMARY

HEF ITEM DESCRIPTION LOCATION FINDING RECOMMENDED BACKFIT PRIOPITY NUMBER NUMBER 6

7 Annuncia tor:

R L013/15 The annunciator acknowledge install a

separate silence SILENCE CONTROL controls do not include a control.

3 silence control. To silence, the alarm must be acknowledged or allowed to time out (s.e., go of f af ter a set period of time).

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Annunciator:

R L013/14 The annunciator audible alarm, install a

mechanism for i

AUDIBLE ALARM af allowed to time out, Ixks automatic reset of the audible out any subsecuent audible alarm, or require a manual alarms until the acknowledr,e action for si!cncing of audible.

control is activated.

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Annunciator Panel RLO!4 The annunciator panel has 78 Arrange tiles so that the blanks 4

annunciator tales, of which 71 can be used to divide the panel are labeled. This exceeds the into two sections. The bulbs can maximum of 50.

be removed and a demarcation line installed.

9 10 Annunciator Panet R LOl4 The annunciator panel vertical Label the axes with location 3

and horizontal axes are not codes.

currently labeled.

10 11 Annunciator Panet R L014 There is no identif ying label Install a label that identifies the 4

above the annunciator panel.

annunciator panel.

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SUMMARY

HEF 11EM DESCISTION LOCATION FINDING RECOMMENDED BACKFIT PRIORITY NUMBER NUMBER 12 Mimic Lines:

R LO14 The ciectrical mimic has Install a movable direc tion-of.

3 ELECTRICAL DISTRIBUTION direction-of. flow arro*s that flo* arrow that can te reversed and cate only one direction of depending on direction of flo*.

f low. The system is capable of two directions of flow.

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l 12 13 Mimic Liner RLO!4 The mimic lines are loose and install mimic lines in a morr ELECTRIC AL DISTRIBUTION lend themselves to br eaka ge.

permanent fashion. They can be The lines from RLOl4 to RL0l6 riveted or glued down; or tape can are already broken.

be used in lieu of plastic lines.

13 14 Mimic Lines:

R LO14 The color coding of mimic lines Dif ferent saturations of one color 4

ELECTRICAL DISTRIBUTION to signify dif f erent voltages (such as green, yellew) to code I

uses colors (orange, yellow, dif f erent voltages are very l

grey) that are used in other e f f ective, parts of the control room to signif y water.

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14 13 Mimic Lines:

R L014 These lines f rom the stations Redo mimics so that there is an 3

ELECTRIC AL DISTRIBUTION appear to intersect st e West easily discernible break around o BENTON STATION TO and East Buses, but in reality the buses that implies a crossing, WEST BUS they do not intersect.

and not a cor.nection.

o L ACYNE STATION TO EAST BUS 13 16 Tag Out Labels R LO14 Tags used at the time cf this Use a much smaller tag, or use a 3

re riew obscured surrouviding magnetic plastic cover over the labels and indicator lights.

control. The cover could be clear for visibility.

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m APPENDIX A HUMAN ENGINEERING FINDING

SUMMARY

SUM M ARY HEF ITEM DESCRIPTION LOCATION FINDING RECOMMENDED BACKFIT PRIOnlTY NUMBER NUMBER 16 17 Sample L&l:

R LG13/014 The numbers 6 and 8 and the o Capitalize the letter "I".

4 CIRC W ATER letters C and G are very similar PU M P !C2 0l PA in appearance. Also, the letter o Reengrave labels so that the IHS-C1001 A "1"

and the num ber

• 1" are letters C and G and the numbers indistinguishable.

6 and 8 are discernible.

17 18 Label:

R L013 All other control positions f or Change the positici 'abel RUN 4

GLAND W ATER pumps on this panel are labeled to START so it w 11 conform to PUMP I4 GOIPA STO P-ST A R T, includin g C e control room convention.

STOP-RUN another Gland Water Pump 1% G0l PB control. This control uses the word RUN instead of ST A R T.

18 19 Labels:

RL0ib Labels are not located above Place labels directly above their 4

51MPLE INDIC ATORS displays or panel elements.

anociated components.

o AIR BREAK 5% ITCH M5-163 Labels are located to the side o M5 KV WEST BUS of these components.

The o M5 KV E AST BUS control room convention is to o AIR BREAK SWITCH MS 45 have labels directly above o AIR BR E AK $21TCH MS-50 components.

o 4.16 KV BUS SL31 IEL-5LO25A o NO 2 XFMR 69-13.8 KV o NO 1 X FMR 69-13.8 KV R eengra v e control position 4

19 20 Labels:

RLOI)

Control position labels are not labels so they are positioned o 13.8 KV VOLTS SELECTOR positioned horizontally, but are horaz ntally and upright to be I H 45LO29 positioned at dif f erent angles.

casi y rea yt peratw.

o 4.16 KV VOLTS SELECTOR I H5-SLO 23 PAGE

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SUMMARY

SUM M ARY HEF ITEM DESCRIPTION LOCATION FINDING RECOMMENDED BACKFIT PRIOPITY NUMBER NUMBER 20 21 Sample Label:

R LOl 3 Se v eral 3-handle controls do Engrave per manent position 4

o GLAND % ATER PUMP not have permanent PU L L-TO.

labais on controls.

14G0lPA IH5 4G001A LOCK and AUTO position la bals.

The labels are removable.

21 22 Semple Indicators, RL013/14 The indicator lamps on the Provide a lamp test capabilit y, 3

3-Handle Lights, panet are all single. filament, or use dual-filament lamps and Pushbutton Lights-incandescent bulbs. There is no rigid administrative procedtires.

ALL lamp test capability.

22 23 Vertical Meters:

R L014 The vertical meters have no Install coding on the scale face 3

ALL coding indicating normal and/or indicating an in-tolerance and out-of-tolerance operating out-of-tolerance condition.

zones on the sca'e.

23 24 Vertical Meters:

R LOl4 The meters indica te the Relabel with more precise 3

o CIRC W ATER PUMP 5 DIS.

discharge header pressure f unctional labeling that includes CHARGE PRESSURE IPI-reading but the labeling does the term HE ADER.

C 4 012 A not say HE ADER. The labeling o SERV WATER DUMPS DIS-implies a discharge pressure CHARGE PRE %URE IPl.

reading f or each pump.

4 5009 A 24 23 Vertical Meters:

R L014 Both meters are located above Move meters lower, preferaoly 3

o 13.8 KV BUS VOLTS IEL-5LO2'/

the maximum of 70 inches f rom to RLOl3 above the 13.8 KV and o 4.16 KV BUS VOLT 5 IEL-5LO23 the floor, and theref ore cannot 4.16 KV VOLT 5 SELECTOR be easily read by the 5th controls.

parcentile female opera tors.

This problem is compounded by the fact that the normal operating zone for these meters is above the midpoint of the scale.

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HUMAN ENGINEERING FINDING

SUMMARY

APPENDIX A ITEM DESCRIPTION LOCATION FINDING RECOMMENDED BACKFIT PRIORITY N MBER NUMBER 25 26 Vertical Meters:

R L914 These vertical meters have

!! precise readings are required, 5

o CIRC W ATER PUMP 5 A. B. C scales with more than nine rectaluate meters to determine o SERV WTF PUM PS A. B. C

. radua tion marks bet w een if scales can be redesigned for o SERV WTR PUMP 5 DIS-adjacent numbars.

rapid readings and conversions.

CH ARGE PRE %$URE o 13.8 KV BUS VOLT 5 26 27 3-Handle Controls:

RLO13 The displays, while positioned Mose the meters

lower, 3

o 4.16 KV VOLT 5 5 ELECTOR directly above their associated preferably directly above the H5-5LO28 controls, are located about 4 or selectors on RLOl3.

o 13.8 KV VOLT SELECTOR 5 f eet above. This obscures the H5-5LO29 association and makes it Vertical Meters:

R LO14 dif f acuit to read.

o 13.8 KV BUS VOLTS IEL-SLO 29 o 4.16 r,V BUS VOLTS IEL-SLO 28 27 28 J-Handle Control:

R LO! 3 The order of buses on RLO14 Rewire and relabel the control 3

o 13.8 KV VOLTS SELECTOR selected by the control is SL1, to make the position order HS-5LO29 SL 3, SL4, SL2. SL7. and SLB.

conform to the bus order.

The order on the control is SLI.

SL2, SL), SL4, SL7, and SL8.

28 29 Pushbutton:

RLOl3 The pushbutton activates a incorporate some type of BLOWN DISCH warning horn out in the field reliable feedback as to horn i

STRUCT VALVE prior to valve activation. This ac tiva tion.

WARNING HORN warns field personnel. There is OHS WLO37A no feedback to the operator that the horn has sounded.

29 30 Pushbutton:

RLOI)

The nomenclature indica tes For immediate indication of this 5

BLDWN DISCH that this pushbiitton is a horn; pinhbut ton f unction, engrave a STRUCT VALVE how ever, the label does not message on the pinhbut tnn W ARNING HORN indicate the pushbut ton sur f ac e such as Horn Activation.

Iune t son.

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