ML20133H353

Final Draft Control Panel Enhancement Stds

ML20133H353
Person / Time
Site:	Maine Yankee
Issue date:	08/17/1985
From:	Maine Yankee
To:
Shared Package
ML20133H348	List: ML20133H347 ML20133H353
References
NUDOCS 8510170075
Download: ML20133H353 (21)

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August 17,1985.

- FINAL DRAFT l

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i CONTROL PANEL i

ENHANCEMENT STANDARDS .

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PDR ADOCK 05000309 F PM i

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~ r INDEX 1.0 Introduction 2.0 Major System Enhancement 3.0 Special Group Enhancement 3.1 Special Groups 3.2 Group Membership Conflicts 3.3 Pictorials 4.0 Flow Line Mimicking 4.1 Flow Lines 4.2 Flow Line Symbols 5.0 Safeguards Valves Coding 6.0 Component To Component Association -

7.0 General Rules For Enhancement ,

APPENDIX A - Flow Line symbols .

APFENDIX B - Control Room Operational Philosophy o

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1. O INTRODUCTION (O. Yankee

/. orderhastoestablished In determine the Enhancements Standards herein, Maine a Control Room Operational Philosophy. The philosophy is one which designates plant operation at four distinct levels within tne Control Room. Each level requires differing amounts and types of information for safe control of the Plant.

The various levels and their associated control room area designations are explained in Appendix B.

The purpose of enhancement is to supplement the operator's memory and knowledge base. Under emergency conditions, when an operator is fatigued or when there have been stressful conditions of any kind, there is a probability that the operator will misidentify one or more elements on the Main Control Board. Enhancemer,t functions as insurance against an error by reminding operators of the identity of the various systems and components under their control.

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2.O MAJOR SYSTEM ENHANCEMENT Major Systems are defined as such in the Maine Yankee Controlled Drawings, Series FCB.

Major systems shall be viewed at the supervisory level, as defined in Appendix B.

Major system enhancement shall be achieved through the use of demarcation lines. The lines shall be made of plastic,- 3/16" thick, 7/10" wide with an opaque brown color, Acrylite series 324-0 Brown.

The demarcation lines should travel in the horizontal or vertical direction where ever possible with 90 degree sharp angled corners at directional transition points.

Major Systems shall be labelled. The labels shall be placed above the associated system, within the demarcated area defined by the lines of demarcation. An attempt should be made to center the label above the associated system and if not then the label must be at least 1" away from the nearest demarcation line.

The labels shall be black matte finish plastic with reverse engraved, on the back, letters filled with white wax. Back

() engraving is utilized to eliminate the effect of dirt accumulation "

in the' crevices formed by front engraving. This becomes important when the letters are to be a light color and dirt would impair reading of the label. The label and lettering shall conform to the characteristics defined in the Maine Yankee document entitled

" Control Panel Labelling Standards" and be discernable at Operating Level A.

4 3.0 SPECIAL GROUPING ENHANCEMENT

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. 5pecial Groups shall be viewed at the supervisory level, as defined in Appendix B. ,

3.1 Special Groups A Special Group is defined as any group of control board elements which may be associated logically by function or purpose so as to aid the operator in the performance of his task.

Special Groups shall be enhanced through the use of area shading. The group of instruments and controls shall be discriminable by being surrounded by a painted area colored Cocoa, matching Hermes Cocca/ Clear #474, and be discriminacle from the rest of the panel.

The edges of the shaded area should be either horizontal or vertical with sharp 90 degree angles at the corners.

Special Groups may be labelled . If the purpose of the shading is to dissassociate components from other components then the group need not be labelled. If the group is a well defined group of components then the shaded area shall be labelled. '

() The labels shall be surface applied vinyl lettering shall be placed within the region at least 1/2" away from the nearest edge.

letters. The associated group shaded The lettering shall conform to the size and content characteristics as defined in the Maine Yankee document entitled " Control Panel Labelling Standards".

3.2 Group Membership Conflicts If one Special Group is in conflict with another Special Group, one or more components belong to both groups, then the following enhancement technique shall be applied.

One of the Special Groups sh' a il be encompassed by dashed demarcation lines. The lines shall be made of plastic, 1/8" thick, 0.45" wide, with dashed sections to be separated by 1/4" and being opaque chocolate brown in color (same as Major System demarcation line color).

Conflicting Groups shall be labelled. Labelling shall be the same as that used for special groups. The lettering should be placed to the left of the associated system and within the demarcated area at least 1/2" from the nearest demarcation line. Should spatial constraints require a different label placement location then the label may be placed to the right

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s- of the system in question and within its demarcated region but not within the other group in conflict.

The lettering on the label shall conform to the size and content characteristics of special groups as defined in the w ^

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Maine Yankee document entitled " Control Panel Labelling O- Standards".

3.3 Pictorials Pictorials are used to provide object association and as such shall be highly discernable.

Pictorials shall be made of phenolic 2-plex plastic, 1/8" thick and colored Cocoa , Hermes Cocoa / Clear lo glare #181.

The largest dimension measurement of the pictorial must be at least 1".

Mimicked flow lines in pictorials shall be 1/2" wide and be part of and the same color as the pictorial plastic mimic.

Pictorials shall be labelled with the name of the component (s) j it is representing. The lettering on pictorials shall be reverse engraved in the back of the pictorial and filled with black enamal paint to produce black letters on the Cocoa

colored Phenolic plastic. The letter _ing characteristics shall j conform to that specified in the Maine Yankee document Labelling Standards" and as such

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entitled, " Control Panel

() shall be discernable at Operating Level A.

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(} 4.0 FLOW LINE MIMICKING

. 4.1 Flow Lines Flow lines shall be viewed at the monitoring level, as defined in Appendix B.

Flow lines shall be mimicked using color coded lines representing different flow types and in the color as defined in Table 1.

Flow lines shall be 3/10" wide and should be made of matte finish colored tape. If matte finished tape is not available then the tape should be brushed or sprayed with a matte finish colorless compound to reduce the effect of glare. Care must be taken to ensure that the spray does not significantly alter the color characterisics of the tape.

Flow lines should be oriented either horizontally or vertically with 90 degree angled corners at the transition points.

The minimum distance between any two flow lines should be 1/8". Where more than two flow lines are in parallel, spacing between flow lines shall vary from pair to pair to make it

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. easier to follow the lines. If two parallel flow lines are of the same color an attempt should be made to separate them as far as possible or re-route one of the lines.

4.2 Flow Line Symbols Flow line symbols shall be identifiable at Operating Level

'B', as defined in Appendix B.

Flow line symbols should be used whenever possible when the associated controls are not on the face of the control panel, when an electronic measurement is taken off a flow line, when there is electronic control of one component by another component or when the flow li'ne mimic cannot be continuous.

The flow line symbols are defined in APPENDIX A.

Flow direction shall be noted where direction of flow is absolute. This can be achieved by using the directional symbol noted in APPENDIX A. The use of a " CHECK VALVE" symbol in a flow line re1 places the need for a directional arrow.

, Flow line direction should be re-emphasised every two to three j feet of flow line, or where possible to clarify flow path direction.

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TABLE 1 Flow Line Coding i i I i IFlow Category i Flow Type I Color Code  !

I l I i g______________________________________________________g i i i l I Clean Water i Aux Feed Water  ! Blue Permacel.#724 I I I i 1 1 I liain Feed Water i Blue Scotch #471 1 I I l  !

I I Primary Water IBlue Permacel #724 I I I I i g______________g___________________g___________________l t i I I IBorated Water i Charging I Yellow Perm. #724 I I I I I I I Reactor Coolant lYellow Scotch #484 i

! I i - 1 I I Letdown i Orange Perm. #997 I I I I I

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RW5T/ SIT- ~lOrange Scotch #471 1 I I .

I IConcentrated Baron IBurgandy Perm. #60 i I I I I

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I Emergency i HPSI Train "A" i Red Permacel #724 1 1 Safeguards i l i i i HPSI Train "B" 1 Blue Scotch #471 I I I I I ,

I I LPSI IPurple Scotch #471 1 I I I I g______________g___________________g___________________l l 1 1 I  !

I Gases i Nitrogen IG'reen Permacel #7241 1 I I I l i VCT Gas IGreen Permacel #7241 1 I I I g______________g___________________g ________________l l 1 1 I i Steam i Steam i Vinyl Silver I I i i Permacel #29 I I I I I

__-- .-_______g___________________g___________________g i l i l i i Electricity' I Electric I Black I d

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. 1 5.0 SAFEGUARDS VALVES CODING

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. Safeguards valves are those valves which receive an automatic  ;

signal to close or open from one of the safeguard systems. The signals are RAS, Recirculation Actuation signal, CSAS, Containment Spray Actuation Signal, SIAS, Safety Injection Actuation signal and CIS, Containment Isolation Signal.

Those safeguards valves which have a control on the Main Control Board shall be coded by placing a white label with black information size lettering under and to the right or left of the associated valve control Identification Label. The label shall identify the signal being sent to the valve by the signals acronyn.

The RAS and SIAS labels shall always be placed to the right side and the CSAS and CIS labels shall always be placed to the left.

For an example refer to the Main Yankee Controlled Drawings, Series FCB. The lettering and dimension characteristics of the labels are defined in the Maine Yankee document entitled " Control Panel Labelling Standards".

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6.0 COMPONENT TO COMPONENT ASSOCIATION

(\ For various reasons, it may be desireable to provide association b- between certain control board components. The association shall be discernable at 'least at the Monitoring level, as defined in Appendix B.

Where the label to component association on the control panel is not strong, the label shall be associated with the component by Joining the two with a painted region shaded with Cocoa , (Hermes Cocoa #474), so that strong association is achieved. The diagram below demonstrates the possible use of this technique. Should the label in question already be in a cocoa painted region then the paint color to be used will be b?ack ( the same as the color of the

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t. Asst NUREG 0700 specifies that long sequences of identical instruments or controls, more than five, should be broken up or separated. To

' perform this the sequence may be grouped logically and each group's area shall be painted Cocoa in order to provide separation and association. The diagram below . demonstrates the possible. use of '

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If the instruments.or controls are already located .

.in a painted region then technique described in section 3.2 Group -

Membership conflicta should be used. ,

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may also .become necEAsary to associate 'a control (s) and a

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- display (s).- To do this the components shall be linked logically by )

r a Cocos painted region as demonstrated below. Again, should the components already be located in a. shaded region then the technique j described in section 3.2 Group Membership conflicts may be used.

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7.0 GENERAL RULES FOR ENHANCEMENT

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. .The minimum desireable distance between any enhancement and labelling elements and themselves or control panel components

• is 1/8".

When using the enhancement techniques herein, care should be taken to avoid the appearence of clutter on the Main Control Board.

When applying flow lines, an attempt should be made to keep the lines travelling in the same direction as long as possible so as to minimize a " maze" affect on the Panel, i

An attempt should be made to have flow lines enter and leave MCB components from the center of the component. This will aid in the appearence of a neat well organized panel.

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~i APPENDIX A Flow Line Symbols

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Flow Line Symbola All flow line symbola shall be made of Black Acrylic plastic,

, . Black / Clear Hermes Matte Clear 404-224 and reverse engraved and back filled with white wax, unless otherwise designated.

VALVES The following symbols designate the existance of a valve which does not have a control device on the Main Control Board or la required to reference the existence of a valve with a valve control somewhere else on the panel. The symbola shall be manufactured from acrylic plastic. The color shall be Black / Clear Hermes Matte Clear 404-224 reverse engraved on the back and back filled with white wax, for normally closed valves, or White / Black Hermes Mattu 407-224 front engrave, for normally open valves. The lettering characteristics shall conform to that of Information Labels as defined in the Maine Yankee Labeling Standards.

Manual Valve 1

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FLOW LINE CROSSOVER -

(No Interaction) .

This symbol shall be an 4 ,i .

integral part of the flow IS .

line -itself and as such - t .

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FLOW LINE CONTENT DUMP

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O.TO/FROMDESIGNATION be used to replace flow lines between two These symbols are to points which cannot be Joined by a flow line or should not be Joined due to a large distance between the two points. They may also be used to designate the source or destination of a flow line which begina, ends or Joins with some other system outside the primary control area of the operators. They are to be manufactured from acrylic plastic, Black / Clear' Hermes Matte Clear 404-224. The ,

lettering is to be reverse engraved into the back of the plastic with the lettering filled with white wax. The lettering is to conform to the size and shape characteristics of Information Labela (See Control Panel Labelling Standards). When the label is a FROM designator the point of the arrow must physically enter the flow line. For TO designators the flow line should enter the end opposite the arrowed portion of the label.

4 TO/FROM Designator -

Points to or comes from the 3 E %WM location components-of the designated on

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FROM Designator-Points as if coming the direction of from f the FROM j}_g designation. FROM PZR 4 i

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TO Designator - ' ' O Points to the physical location of the ayatem or component outside the primary control area of the operators.

TO ATMOSPHERE O SAME. OlHEN3 TONS A$ ABovE

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ELECTRICAL SYMBOLS i The material to be used to make the Electrical symbols has not yet been determined unless otherwise stated.

Electronic Measurements / Control

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APPENDIX B Control Room Operational Philoscphy I

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an attempt to structure the application of Human Factors

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i divided into several operator task related zones. Each :one i represents a different type of operator activity required for safe l control of the plant. Each level and its associated control room informational components is listed below.

Operating Level -

A Immediate Vicinity, Specific To Task Action Contents - discernability of lettering on labels

- discernabiltiy of symbol lettering

- discernabiltiy of pictorial information lettering

- detailed display information Viewing Range - Up to 42" See diagram B1.

B: General Vicinity, State of Readiness for Action

• Contents - discriminability of flow line symbols '

. - discerability of label shape

- discriminability of instruments and controls ,

- discernabiltiy of label /compcnent association Viewing Range - Up to 84" See diagram B2.

Monitoring Level, Monitor General Plant State ,

Contents - discriminability of flow lines

. - discriminability of component codes

- discernability of display pointer position

- discernability of cohtrol position

- alarm identification

- discernability of Special Grouping and pictorial label lettering Viewing Range - up to 12 feet See diagram B3.

Supervisory Level, Plant State Supervision O Contents -

discernability of major system demarcations discernability of special group shading

- discriminability of pictorial mimics

- discernability of major system label lettering

- discernability of alarm position

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- indication light on/off discrimination

. . Viewing Range - up to 24 feet See diagram B4.

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