ML20198B069
| ML20198B069 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 08/03/1984 |
| From: | PUBLIC SERVICE CO. OF COLORADO |
| To: | |
| Shared Package | |
| ML20198B035 | List: |
| References | |
| DD-AAS-1, NUDOCS 8511060287 | |
| Download: ML20198B069 (71) | |
Text
{{#Wiki_filter:PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLE AR GENERATING STATION DD-AAS-1 y !ssue A Page 1 of 9 DESIGN DIRECTIVE FOR ABBREVIATION, SYMBOL, AND ACRONYM SELECTION PREPARE B- REVIEWED BY: APPROVED BY: ek3 l5 h Wal,r.! Yf'h Y
'(h FOREWORD: Technical expressions and functional descriptions are used in most forms of communications essenttal to the power industry. Many of these expressions and descriptions are reduced by contraction, omission, or substitution. These reduced expressions or descriptions are then considered abbreviations. In other cases acronyms are created by using the first letter or syllables of the sxcessive parts of an expression or description.
Idealistically, all expressions and descriptions should be spelled out in full form. However, space limitations quickly negates this ideal approach. Second, convenience of use offers assurance that abbreviations, subols, and acronyms will continue in use. Therafore, it becomes important to assure . consistency of meaning fc. those abbreviations, symbols, and acronyms used within a certain industry or society. The purpose of this Design Directive is to provide guidance in the selection and use of abbreviations, symbols, ar,d acronyms. BACKGROUND: A survey of the Ft. St. Vrain Control Room was conducted to list the abbreviations, symbols, and dcronyms used. This survey also provided a frecuency of use .:ount for each variation of a particular abbresiation or a :ronym. The variation with the higher uslage was considered for retention. A comparison with attachment G-18 of Administrativ~e Procedure G-I was made to eliminate differences where polssible. Final selections were then based on ease of recognition:, acceptance, frequency of use, and labei space limitations. It is recongnized that many acceptable variatioris do exist and that Table "A" included in this directive may difier from other sources. Maintaining consistency within 1,h e operating environment is of extreme importance and should nt:t be degraded by applying abbreviations, symbols, or acronyrs preferred by individuals or outside sources. 8511060287 851029 PDR ADOCK 05000267 F PDR ; I FORM 372 22 3643 .
PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION DD-AAS-1 p 1ssue A Page 2 of 9 APPLICABILITY The requirements of this Design Directive shall be met in the selection and application of all abbreviations, symbols, and acronyms used in control room labeling, procecures, and drawing preparation cr revision. SELECTICN CONSIDERATICNS I. CONSISTENCY - In order to assure consistency in the application of abbreviations, symbols, and acronyms, some order must be maintained in the selection process. The following order of selection or generation sball be followed: A. Conform to the Ft. St. Vrain convention for , abbreviations, symbols, and acronyms as listed by Table 1 of this Directive. B. Select new abbreviations, sym.cols, and acronyms from the following sources:
- 1. Marks' Standard Handbook for Mechanical Engineers.
- 2. Webster's New Collegiate Dictionary.
6
- 3. CRC Handbook of Chemistry and Physics.
C. Generate specific abbreviations or acronyms only in and for those cases where selection steps A and B do r,ct meet the requirements.
- 1. Abbreviations and acronyms shall have one (1) meaning only so as to minimi:e ambiguity.
- 2. Abbreviation and acronyms shall De structured so as to be easily distinguishable from similiar abbreviations or acronyms.
- 3. Use standard symbols only. (The need for explanatory information as to the meaning of a non-standard symbol negates any value of a symbol.)
FORM 372 22 3643
, PUBLIC SERVICE COMPANY OF COLORADO FORT ST VRAIN NUCLEAR GENERATING STATION DD-AAS-1 Issue A Page 3 of 9 II. APPLICATIONS - Specific applications must be considered in determining the acceptibility of a particular abbreviation or acronym. A. Abbreviations, symbols, or acronyms shall not be used as an entire descriptive element for functional labeling. EXAMPLE - NOT ACCEPTABLE EFP1ATSV EXAMPLE - ACCEPTABLE BFP 1A TURB. STOP VA. B. Abbreviations, symbol s , or acronyms may be used as identifing elements, provided that the functional labeling description clearly describes the identification elements. See Figure 1. ASSOCIATED DIRECTIVES DD-DD Requirements and Guidance for
.\
Preparing Design Directives . DD-APL Annunciator Panel Legends DD-LAB Control Room Panel & Component Labeiing SOURCE MATERIALS AND REFERENCES
- NUREG-0799 (Draft Criteria for Preparation of Emergency Operating Procedures) .
- Marks' Standard Handbook for Mechanical Engineers
- Websters New Collegiate Dictionary
- CRC Handbook of Chemistry and Physics Addendum - 1
- NUREG-0544 (Handbook of Acronyms and
_ N Initialism;) s
- Public Service Co (FSV) Procedure' G Glossary of Abbreviations and
, definitions
, s F ORM 3 72 22 - 364J
PUBLIC SERVICE COMPANY OF COLORADO FO .T ST. VRAIN NUCLEAR GENERATING STATION DD-AAS-1 ISSUE A PAGE 4 of 9 EXAMPLE - ACCEPTABLE HDR-2
% 9 Q $y WASTE TANK DISCHARGE HDR EXAMPLE -
NOT ACCEPTABLE HDR-2
#09 p+> V WASTE TANK CONTROL FIGURE 1 FORM 372 22 3643
PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VR AIN NUCLE AR GENER ATING STATION DD-AAS-1 ~ 1ssue A Page 5 of 9 TABLE A ESTABLISHED ABBREVIATIONS & ACRONYM LISTING ACRONYM OR ABBREVIATION MEANING ABSORB Absorber ABV Above AC Alternating Current ACB Air Circuit Breaker ACCUM Accumulator ACFM Actual Cubic Feet Per Minute ACK Acknowledge ACM Alternate Cooling Method ACOT Actual Core Outlet Temperature ACT Activity ANAL Analysis ANNUNC Annunciator ATTEMP Attemperator AUTO Automatic AUX Auxiliary . AVG Average BATT Battery BD Board BFP- Boiler Feed Pump , BKUP Backup BLDG Building BLR Boiler BP Backplate EPFT Bypass Flash Tank BRG Bearing BUFF Buffer C Celsius CAV Cavity CFM Cubic Feet Per Minute CH Channel CHLD Chilled CHRGR Charger CIRC Circulator CKT Circuit CO Carbon Monoxide CO 2 (C02) Carbon Dioxide COLL Collector COMPR Compressor COND Condensor CONT Control FORM 372 22 3643
PUBLIC SERVICE CO'VIPANY OF COLORADO FORT ST. VR AIN NUCLEAR GENERATING STATION , Issue A Page 6 of 9 CDNT RM Control Room CDNTMT Containment CPM Counts Per Minute CSF Core Support Floor CURR Current DA Dearator DC Direct Current DEMIN Demineralizer DEPRESS Depressurize DE;UPER Desuperheating DG Diesel Generator DIFF Differential AP Differential Pressure DISCH Discharge DIST Distribute DDM Domestic DRN Drain E East ECC Eccentricity ECON Economizer EES Evaporator / Economizer / Superheater EHC Electric Hydraulic Controls EL Elevation ELEC Electric ELEV Elevator EMERG Erergency . ENG Engine EQUIP Equipment EVAP Evaporate - EXC Exciter , EXCH Exchange EXPAN Expansion EXH Exhaust EXTR Extraction FDWTR Feedwater FLTK Flash Tank FLTR Filter FRNT Front GEN Generator GND Ground GPM Gallons Per Minute GRN Green H2 (H2) Hydrogen HD Head HDR Header HE Helium HI High HP High Pressure HR Hour HTR Heater FOR$4 372 22 3643
PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION Issue A Page 7 of 9 HVAC Heating, Ventilating, & Air Conditioning HYO Hydraulic IMP Impedance IN Inches 10 Indicator INST Instrument INTERR Interruptible INTSP Interspace IRR VALVE Irrigation Valve 150 Isolate JOURN Journal KV Kilovolt KW Kilowatts LB Pound LCV Level Control Valve LD Load LEV Level LIQ Liquid LN ( LN2) Liquid Nitrogen LP Low Pressure LP 1 Loop 1 LP 2 Loop 2 MAN Manual MCC Motor Control Center ' MIN Minute MK UP Makeup MN Main MN COND Main Condensor MOIST Moisture - MON Monitor MPT Main Power Transformer M.S. Main Steam MTR Motor MW Megawatt MWH Megawatt Hour N North N2 (N2) Nitrogen N.E. North East NEG Negative NEUT Neutral NORM Normal N.W. North West OCB 011 Circuit Breaker PB Push Button PC Primary Coolant PCRV Prestressed Concrete Reactor Vessel PENETR Penetration PH Phase FORM 372 22 3643
, PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATHDN DD-AAS-1 1ssue A Page 8 of 9 PHC Purified Helium Compressor PLT Plant PNL Panel PRESS Pressure PRI Primary PROHIB Prohibit PRPA Platte River Power Authority PSI Pound Per Square Inch PSIA Pounds Per Square Inch Absolute PSIG Pounds Per Square Inch Gauge PURIF Purification PWR Power RAT Reserve Auxiliary Transformer RDG Reading REC Recovery RECIRC Recirculator RECYC Recycle REDIST Redistribute REFRIG Refrigerator REG Regulate REGEN Regeneration REL Release RES Reserve RET Return REV Revolution RHT Reheat RHTR Reheater RLY Relay RM Room RPM Revolution Per Minute RTN PU Return Pump RX Reactor S South S.A. Service Air SAMP ' Sample S.E. South East SEC Secondary SEL Selector SEP Separater SEQ Sequential SERV Service SERV BLD Service Building SERV WTR Service Water SET PT Setpoint SHTDN Shutdown SIG Signal SQL Solenoid SPD Speed SPUV Steam Packing Underloader Valve STA Station 3 FORM 372 22 - 3643
PUBliC SERVICE COMPANY OF COLORADO FORT ST. VR AIN NUCLEAR GENERATING STATION DD-AAS-1 Issue A 0 Page 9 of 9 STOBY Standby STG Stage STM Steam STOR Storage SUCT Suction SUP Support 5.W. South West SW Switch SWGR Switchgear SWYD Switchyard SYS System TEMP Temperature TEST BLK Test Block TK Tank TN Turning TR Trip TRANS Transfer TREAT Treatment TURB Turbine TWDT Turbine Water Drain Tank TWR Tower UAT Unit Auxiliary Transforr..er V Volt VA Valve VAR Volt-Amps Resistive VIB Vibration W West WTR Water FOAM 372-22 3643
4 n . s DD-AIS-1 Issue A (% Page i o f l9 A DESIGN DIRECTIVE FOR THE SELECTION OF ANALOG INDICATORS ECREWORD_ The purpose of indicators is to display a relative or absolute value iepresenting a system or process parameter. Indicators are a vital link in the opera tors inter f ace wi th the control loop. The effectiveness of this interface depends on what in format ion and how that information is presented. The use +o which the operator will put the in forma t ion presented, should serve to influence the level of information, as well as the manner i r, which that .nformation is presented. This Design Direc t i ve wiLl provide guidance in selecting indicators and designing scales for use at Fort St. Vrain. Design Directive DD-CBL-1 provides guidance in locating indicators. GELECIl0U_CDUSIDEE6IIQtf I. INDICATOR llSE A. Generally, indicators are used for plant operations in one c f the following ways.
- 1. For quantitative reading to an evact numerical value: reading time from a c loc k , reading pressure from a gauge, or electrical poiential from a VolIMOIer.
- 2. For qualitative reading: this means judging the approximate value, trend, rate of change, or direction of deviation from a desired value. It differs from quantitative reading io that the operator does not read an exact numerical value. _
Examples include noting that a ship h a t; veered to the right of a desired course, or that steam temperature is rising. B. Indicators that are to be used for quantitative readings shaLL have sufficent range and scale
t DD-AIS-1 I:ssue A Page 7 o f 19 resolution to enable the operator t o vna k e a rapid and accurate determination of the displayed value. C. Scale values and increments shat! not be used, which retuire the use of ca lcula t ions to determine a :pecific value. (See Figure 1, Page _) Displayed values shall be in an immediately useable form. II. INDICATOR TYPES There are many variations of severaL basic types of indicators, however only those acceptable for Fort St. Vrain use are tisted. A. Circular and Curved Sca le Wi th Moving Pointer. This design (Detail A in Figure 2) is recommended for use where a ma x i in um of exposed scale tsngth is required in a toinimuto of p ane t space. A compact indicator case, the Long pointer, and rotational movernen t aid checking and qualitative reading. B. Vertical and Horizontal Straight ^ ale lJ i th tiov i ng Pointer. This design (Detail B) is desirable for sh oi- t-sc a l e indicators. It permits a saving in front-panel space and provides a good means of pointer alignment and checking. The shorter pointer and lack of rotational (nov einen t , however, fnake it (nore difficult for the eye to notice change in the position of the pointer. C. Otgital D i sp lay. This design (Detai! C) present s a iarge range of quantitative values, and requires less panet space then certain circular and straight scale indicators. Conventional methods of presentation are usually inadequate when a large range of vai.nes must be displayed on one indicator. An ex avnp le wou l.d be the need for a pressure indicator with a range of from 0 to 2,000 lbs with reading precision necessitating graduated intervals corresponding to every 1 ib throughout the entire range. Thus, an indicator with a inoving pointer and a fixed scale would require an impractical scale length of about 100 inches. III. SELECTION OF~ INDICATOR TYPE A. While certain technical requireinents may suggest the type of indicator, panet layout, convention and operator expectations are i nip o r t a n t factors to be considered.
i DD-AIS-1 Issue A Page 3 of 19 B. It ir not the intent of this directive to preciade the use of particular types of indicators, but rather encourage the use of those types that are currentty i in use and have proven acceptable frota both functional and qualification aspects. C. Table i, Page _ listr those types presentty in use and accepiable for new design, without further qualification. IV. DESIGN OF INDICATOR SCALES A. De fini t ions (See Figure 3, Page _)
- 1. Scale Range. This is the numer ica l d i f ference between the highest and lowest value on a s c s. l e .
- 2. tia j or Subdivision. The nutnbered division Lines, usualLy differentiated from other divisions by thicker and longer lines.
- 3. Numbered-Intervai Value. Thii is the numerical difference between adjacent nuinbers on a sca le.
- 4. Intermediate Subdivision. An unnumbered division iine which separates a nutobered-i n terva L value, usually represented by a thinner and/or shorter line then major subdivisions.
- 5. tii nor Subdivision. The unnumbered division Lines, usuaLly shorter and thinner then major or intermediate subdivision lines.
- 6. Graduation-Interval Value or increment. This is the numer ica l d i f ference represented by adjacent minor subdivision iaarks.
B. General Considerations: Be fore designing a scale for an indicator the designer shall consider the following;
- i. Signal range and source accuracy. (A source accuracy of !mpm!x 1% of range does not warrant an indicator scale with 0.5% range markings.)
- 2. Indicator accuracy. Indicator overall accuracy y(, sha L L be considered in selecting or desiaing a A scale. (An indicator with a mechani ca l hy:hDers i s or temperature error of !mpm!x 1% does not warrant a scale marked which implies a .5% accuracy.)
3 o
.. DD-AIS-1 Issue A
~
Page 4 of 19 6
- 3. Operational use. The indicator scale increment
. sha L L not be e _ _ ~ " " less than c: '
'f the g hh} required controt- accuract. Example: If peuser
- g. [systemoperationrequirescontrol to !mpm!x 5 lbs
-- (10 lb range), the indicator increment shati not 4 be more then 10 lbs, nor less then 5 lbs.
)
4 Est ab l i shed conventions.. AlL indicators displaying the same parameter, and range shalL have identical scale configurations. 5.- Transformed Scale Values. Transforming source (signal) values into scale values- relieves the operator of the necessity of remembering conversion ' factors and performing the mental gymnastics to convert the displayed information'to a useabte form. Example: Tank volume (gaLions, Lbs) should not be d i sp layed as inches of H!mdwn2!x0.
- 6. tNontinear Scales. Nonlinear scales condense a large range into a relatively smaLl space but in such' away as to permit sensitive readih9s at certain critical ranges of the rca Le. In situations where error tolerances are a constant percentage of-the indication, Logarithmic scales are -very suitable if they contain _ sufficient numbered graduation marks to minimize errors as a result of the Linear-scale reading habits of operators. Figure 4, Page _. iliustrates such a scale.
- 7. Directionality of Movement.
- a. Circular Scales -
Scale values should increase with clockwise movement of the pointer. b .- Vertical Straight Scales - Scale values should increase with upwarri movement of the
' pointer.
- c. Horizontal Straight Scales -
Scale values shouLd increase with pointer movement to the right. C. Scale Design
- 1. General -
For ease of reading, sufficient separation must be maintained between scale divisions. In addition, division marking Lengths
a , DD-AIS-1 Issue A Page 5 of 19 and line wid ths reflect differences between major and minor graduation marks. More specific recommendations for stale marking d iinens i ons follow.
- a. The graduation-interval va lues sha ll be one, two, five, or dec iina l muttiples thereof.
Graduation-interval values of two are less desirable than values of one or five. Figure 6 and Table 2, Pages _ & _ gives examples of good, fair, and poor numerical progressions.
- b. There shall be no more than nine graduatson mar ks between nutabered gradua t ion i nterva ls.
- c. No r nia l ly , scales nutnbered by intervals of i, 10, 100, etc. and subdivided by ten qraduation intervals are superior to other scales,
- d. Scales shall be designed so that interpolation bc; ween graduation marks is not necessary; however, when space is iimited, it is better to require interpolated readings than to clutter the dial with crowded graduations marks.
- e. A s s uin i ng sufficient space, a scale that is to be read to the nearest i, 10, 100, etc. shall be designed (or selected) with graduation-interval values of 1, 10, or 100. If accuracy to the nearest 0.5, 5, or 50 units is required, scales shall have 0.5, 5, or 50 graduation iotervai values.
- f. Scale interpolation. Scales that are to be read quantitatsvei.y shall be designed to be read to the nearest graduation mark. For instance, i f we assume a sca le range of 5 and a scale that is to be read to the nearest one-tenth unit, the preferred sca le would be numbered by ones witn a graduation mark for each one-tenth unit as shown in Figure 2, Detail A, Page_.
1 1
- 2. Scale Markings
- a. In forma t i on required -
The following i n foriita t i on sha l l be provided on each dial or ! sca le type indicator.
5 . DD-AIS-1 Issue A Page 6 of 19 Sca le gradua t i on usar k i ngs Numericai vaLue of major subdivisions Parameter and Units of ineasure Scale transformation factor if required (such a s mult ip ly x 100) r40TE. Categories of information not needed in using the d isp lay shall be avoided (e.g., calibration nia r k s , patent notices. manufacturer's t r ad erna r k . or address).
- b. Abbreviations -
All abbreviations and acranyms shaLL be in accordance with DD-AAS-1, Design Directive for Abbreviation, Symbol and Acranym Seioction,
- c. Tca le Gr ad ua t i on riar k i ng Dimensions -
Tcale marking dimensions for Listed indicators shalI ae in accordance with the appi.icable reference as shown on Table i Page _, and Figure 7, Page _.
?cale markings for indicators not Lisied in Table i shall be in accordance with Figure 5.
- d. Character Dimensional Characteristics -
Character size and font shall be in accordance with applicable reference as shown on Table 2, Page ._.
- e. Contrast -
High contrast sha ll be provided by using back markings on a tub i t e bac kground .
- f. Numeral Orientation -
Individual numerals on any type of fixed scale should be vertical (Figure 2, Pa9e ). 9 Zero Point Orientation Where pointer (novement is more than 360 d e g r e e s ', the zero poini shall be located at the 12 o' clock position. Where positive and negative values are d i sp layed around a zero or null Position, the zero or null point should be located at the 12 o ' c loc k position.
- DD-AIS-1 Issue A P age 7 of 19
- h. End Point Indication On Pariial-Revolution Scales LJh er e the scale covers less than a full rotation of the pointer, scale end-points sha ll be indicated by a numbered (major) subdivision and a break in scale.
The break should be at least one n uinb er ed interval in Iength. The break should be centered at the 6 o' clock position.
- i. Exceptions -
Certain applications of sca les require unique design features and, in such cases, c omp r oin i ses with the recommendations listed above foust be made. An e x ainp l e of these special cases include nonlinear scales. The foLlowing e x c ep t i on <; apply onLy in special cases. (See Figure 4)
- a. Graduation marks may be spaced as c lose as 0.035 in., however the distance shall never be Less than twice the stroke width for white marks on black dial faces or less than one stroke width for black marks on white dial f aces.
- b. The m i n i nutm distance between major graduation marks shall be 0.35 inches.
- c. The us i n i o uio width of a wojor graduation ina r k shaLL be 0.0125 inches.
NOTE: Scale design format sheets for use in arocuring indicato ,r scales for common scale types are i7cluded with 3 this design directive as At tacilment DD-
^ ^
AIS-1A, 1 B, and 1C. D. Pointers
- 1. Pointer Positioning Relative To Scale
- a. Pointer tip shall extend to within approxi.oately 1/16 inch of (but not overlap) the smallest graduation marks on the scale.
. DD-AIS-1 Issue A Page G of 19
- b. Pointers shall be snounted to avoid parallex errors.
- 2. Pointer Visibility -
Pointer / background contrast and pointer size shall be adequate to permit rapid recognition of pointer position.
- 3. Pointer Tip Forro -
Pointer t i ps sha ll be s iinP le. Exarnptes of perferred and non-perferred types are given in Figure 2, Page . Pointer tips shall be selected to <n i n i rn i z e c onc ea linen t of sca le graduation taarks or n uaner a l s . E. Color Coding
- 1. As s i g ninen t - Three colors having narrowly defined ineanings are acceptable for use in ' banding" scale type i nd i c.a t or s installed in the Fort St. Vrain control r oorn
- a. Red: unsafe, danger, immediate operator action required, or an indication that a critical pari aeter is out of tolerance.
- b. Green; safe, no operator action required, or an indication that a p a r aine t er is within tolerance.
- c. Arab er (yellow) hazard (potentiaLLy unsafe),
caution, attention required, or an indication that a marg i na l va lue or paraineter ex ists.
- 2. Application Color banding inay be applied by the following methods:
- a. Painting a narrow strip directly on the meter face.
- b. Use of self adhesive tape.
- c. Use of translucent tape over the scale card, NOTE: Color banding shaLL not obstruct scale markings or reduce marking contrast ratio with background.
V. DIGITAL DISPLAY SELECTION
DD-AIS-1 Issue A Page 9 of 19 Digital indicators utilized on the Fort St, Vrain control boards are elec tronic d i sp lays using " Nixie
- tubos, light ent i t t i ng diodes (LEDs), or other electroluminescent devices.
A. tJumer i c a l Presentation Considerations
- 1. Orsentation -
tiu t t i-d i g i t counters shaLL be oriented to read horizontally from left to right.
- 2. Character Style -
Timple character fonts shaLL be used. Stples using var iab le stroke widths, slanted characters, etc. shou ld be avoided.
- 3. (Jumerat Height -
(4umera!s shaLL be a minimum of 0.4 inch i n inei gh t .
- 4. Width-To-Height Ratio -
Width-to-height ratio of numerals shaLL be approximately 3:5.
- 5. Spacing -
Horizontal spacing between nunterals sha ll be between one~1uarter and one-half the numeral width. D, Rate Of Change - Display characters shaLL not fotlow each other faster than two peigecond when the indicator is intended for tuanitative re:adings. C. Contrast - Character-to-hackground contrast ratio
- h a L t be between 15:i and 20:1.
D. Derei Markings - Indicator front or Bezei areas shall be free of logos, range markings, and printed mater.at not directly related to the indicator function, parameter or vaLue displayed. eSSOCI6IED_DIEECIIVES DD-DD-1 Re.t u i r einen t s a nd Guidance for Preparing Design Directives D D-- A A S - 1 Abbreviations, Synt,o t s , & Acronyms DD-CBL-1 Control Board Layout 6D-LAB-1 Labeling 1
)
i
r s i DD-AIS-1 ) Issue n ; Page 10 ofl9 l 00UECE_d6IESI6L2_6dD_SEEEEENCES Human Factor 5 in Engineer & Oesi9n, Mc Co rin i c k.-Sa nd e r s , Fi f th Edition Human Engineerino Guide t o E t u i ptnen t Design--Van Cott-Kinkade.1972 MIL-STD-14272D
?!UREG -0700
v PUBLIC SERVICE COMPANY OF COLORADO l FORT ST. VRt.1N NUCLEAR GENERATING STATION ! Issue A , Page 11 of 19 EXAMPLE , IMPROPER SCALING , I l l _ 2 24.4 Z PROBLEMS: L
\
i 1.
- SusDivtStON INCREMENT l NoN-LINEAR.
l 179.52 ' T HZ 2. MAsoR INCREMENT IN ODD ! l 2 00 VALUES. SHOULD BE IN ;
". U L T I P L E S OF 10, 100, g
E'c - l 134.64 L - B _- 3. IMPLIED ACCURACY LBS/hR INCCNSI$ TENT W!TH D! SPLAYED INCREMENT. R l
- 89.76 j Z 4. EXTREMELY D!FF1 CULT IC
- P, E A D .
a \ MAJOR : IVIS10N NOT MARKED CALCULATION REQUIRED TO DETERMINE INDICATED VALUE = 1000 [ MAJOR READING + (4.488 x NUMBER OF S U B D I V I S I O N S )]. FIGURE 1 FORM 372 22 3643
PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION DD-A!S-1 Essue A
- Page 12 of 19 ACCEPTABLE INDICATOR TYPES x gg(Fld// x 5
x8 2 E 3
6 =
[s b ~~ 4 51 7 41: P3 l
/ I - S5 ;
O O jf ' 0 2 l 0 p0 5q g ;
?-1
* @ x i ;
CIRCULATOP. (OR CURVED) SCALE
, WITH MOVING POIt4TER VERTICAL (OR HORIZONTAL)
STRAIGHT SCALE WITH DETAIL "A" MOVING POINTER DETAIL "B" s W M DIGITAL DISPLAY DETAIL "C" ACCEPTABLE l POINTER STYLES l l e f e UNACCEPTABLE ' POINTER STYLES FIGURE 2 FORM 372 22 3643
PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION DD- AIS-1 Issus A Page 13 of 19 ILLUSTRATION OF DEFINITIONS APPLIED TO INDICATOR SCALES SCALE RANGE NUMBERED - INTERVAL VALUE D 1 2 MINOR llll SUBDIVISION - Illllll'lll! . GRADUATION - INTERMEDIATE -
- INTERVAL SUBDIVISION VALUE OR MAJOR SUBDIVISION l
{ l - l l l FIGURE 3 l FORM 372 22- 3643 I ., _
1 . . i 8 E , EXAMPLES OF NON-LINEAR SCALES g I a o N C to to l 200
* "I m to D f5 3 ,300 lo
, 10" uj0 s
_f M LITORR 1 EQ 2
's-lO s EO r
C ,-104 [O o3 E P5 m S 3 z <z 710
=-
m DO 2 E ri s_-lO o E- u,
=
blO DETAIL "B" $o r a zO, F, NOTE: Tile AB0VE SCALE DOES NOT CONFORN TO REQUIREMENT 7a (DIRECTIONALITY p 0FMOVEMENT),ASELECTIONTHAT o SHOULD BE AVOIDED IF POSSIBLE. O DETAI L " A" yya EE?
.u
#>e k
FIGURE 4 g
E TABLE 1 [ ACCEPTABLE INDICATORS WITH RECORiEllDED MARKING , a PARAMETER DIVISION ' SCALE C
- AND UNIT LIllE 0
CHARACTER CHARACTER M RKINu-TYPICAL
- TYPE MFR. PART #
DETAIL FIO. DETAIL NO. DETAIL FUNCTION gh m (FIGURE 7) (FIGURE 7) (FIGURE 5) HORI AL ^ FOXBOR0 N0196SC 6 5 B INDI g zm VERTICAL GE 6 5 N/A EHC PANEL INDICATIONS (VALVE POSITION)
$n Po LINEAR 185114FAFAI 9E BFP SPEED "3 CIRCULAR GE AB-40 3 2 C ELECTRICAL PARAltETERS h2 m -<
VERTICAL INTERNATIONAL 1136-VL 8 7 8 PARAMETER DISPLAY kO Em LINEAR (PPS MODULES) o SCRAM CONTACTOR EO CIRCULAR VOLTRON D4A 6 5 N/A CURRENT yO
@O V AL VX-252 5 4 A PROCESS PARAMETERS p WESTINGHOUSE O
CIRCULATOR SPEED CIRCULAR WESTINGHOUSE KA241 3 2 C ELECTRICAL PARAMETERS EGG
'a E6
__.a 0; u, > L
-b
- PUBLIC SERVICE COMPANY OF COLOhADO FORT ST. VRAIN NUCLEAR GENERATING STATIOM DD-AIS-1 Issue A Page 16 of 19 i SCALE MARKING DIMENSIONS i
-= ~
- oto"
.ol5"
""=
t + .012" +.005"
.000"
- I t '
3 ammmmmmme
*I'
.040" [ 0.40" Minista Minimm
.125"-= P-
~
j _
.005. .,,o005-
,o=
, , 3,. .0 7 s" - -
. .oos- -
. coo- _
.2oo H "" " " r fo20 DETAIL "B"
""""" MINIM'Jt
?
- I
~
son: n.t etxzestess g g ,j o estess s n ctn ro
.005" DETAIL "A" 16' MIN.
6 3.5" DIA.
.015" t . 005,l Nlll / /
.250" t .010"
\ [ 030".2 * ,
1.6* MIN. t 3.5" DIA. .0156"
- .200" DETAIL "C" FORM 372 22 3643
PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION DD- AIS-1 Issue A Page 17 of 19 ILLUSTRATED SCALE PROGRESSIONS G UATION F M GRADUATION , NUMBERED INTERVAL VALUE INTERVAL VALUE MAJOR INTERMEDIATE MINOR 5 2 10, 4 !& 4 1, 100 X X X too 40C 2
^
x 0.1, 1, 10 5" j 5, 50, 500 X X (GROUP 1) .. L
* .o 'oo ' " ioo d 2, 20, 200 X X
$ .oo icoo_.
i 5
,k *
- fo, 1, 10, ~100 X X 0.2, 2, 20 (GROUP 2) 'N,
*AA 4o,'" '" d 2, 20, 200 X X X X
.i ,
' 1, 10, X io 4 s'o 100 X co sw E R
'" 2, 20, 200 X X X O.5, 5, 50 .h (GROUP 3)
-si,.,,
A 8 5" 0 moo 5, 50, 500 X X X l NOTE: SEE TABLE 2 FOR RECO}DIENDED & ACCEPTABLE PROGRESSIONS FORM 372 22 3643 FIGURE 6 l
E TABLE 2 4 EXAMPLES OF PROGRESSIONS FOR SCALE NUMBERS . v C D cp NOT RECOMMENDED r-RECOMMENDED ACCEPTABLE ha 4m x 55 0.1 0.2 0.3 0.4 0.5 0.2 0.4 0.6 0.8 1.0 0.25 0.5 0.75 1.0 $Om 1 2 3 4 5 2 4 6 8 10 2.5 5 7.5 10 2 10 20 30 40 50 20 40 60 80 100 25 50 75 100 go 100 200 300 400 500 200 400 600 800 1000 250 500 750 1000 e c) 0.5 1.0 1.5 2.0 2.5 0.4 0.8 1.2 1.6 1.8 93 "T 4 8 12 16 18 5 50 10 15 20 25 100 150 200 250 40 80 120 160 180 y$ E<
$0 8'
ao RO NOTE: SEE FIGURE 6 FOR SCALE ILLUSTRATIONS y O O o-o co w l a
8 y CHARACTER DETAILS FOR INDICATOR MARKINGS ' u, " 1 2 3 4 5 6 7 8 CHARACTER DETAIL NUMBER U T j CHARACTER HEIGHT - DECIMAL 5/16" 1/4"
.250" 7/32"
.218" 3/16"
.187" 5/32"
.156" 1/8"
.125" 3/32"
.094" 5/64a
.078" c
CHARACTER HEIGHT , FRACTIONAL .312" .n f__ (SEE DETAIL A) 2 6-1/2 7-1/2 9-1/2 11-1/2 14 (n
~
I 3-3/4 4-1/2 5-1/2 R ON A
'T NO. OF CHARACTERS PER INCH 2 2.6 3.0 3.5 4.2 5.2 6.9 8.3 $
p <g VERTICAL ORIENTATION zm VERTICAL DISTANCE (DECIMAL) BETWEEN .135 .118 .100 .084 .067 .051 .042 c n O
.169 CHARACTERS (SEE DETAIL "B") TE
" m o>
'S 2 2*
STROKE WIDTH DO -n
-1/6" To 1/8" 0F HEIGli h
-hlM ,
-! ,O.-
[- - -
*k.
O
**HElati b *** VERTICAL DISTANCE BETWEEN CHARACTERS O
O
- WIDTH = .60 x H (MEASURED CENTERLINE
~ WIDW -
** LETTER HEIGHT MEASURED BETWEEN CENTER LINES.
VV "B" 0F STR0KE WIDTH) SHALL RE 54% Of DETAIL uAo DETAIL CHARAC(ER HEIGHT. E.cN2-'P
$5 FIGURE 7 f,
. PUBLIC SERVICE COMPANY OF COLORADO' DD-AIS-1 FORT ST. VRAIN NUCLEAR GENERATING STATION f Attachrnent A INTERNATIONAL - 1136 VL METER SCALE CONFIGURATION NOTES:
- 1. SCALE MARKINGS SHALL BE PER DETAIL "A".
- 2. DIVISION LINE NUMBERS SHALL BE PER DETAIL "B".
- 3. PA?AMETER AND UNITS MARKINGS SHALL BE PER DETAIL "C".
f" + .012" +.005" .000' i - 4
. 0 M" J 0.40" Minimum Minimum
.125" - F II
- nog,, +.005" ,
.000"
.078" - +
k DETAIL "A" NOTE: ALL DIME.NSIONS 2 005" L'NI.ESS SPECITIED L
. cit .ocr
.01r 1.cor
-- w
. - w. -
T= sus -- .=- oor 1. car T=8t= orr _. I 1.cte M.p.,ess.. .. air
, c. ,
i.
-. car :.oir ,
DETAIL "B" DETAIL "C" FORM 372 22 3443
. PUBLIC SERVICE COMPANY OF COLORADO /
FORT ST. VRAIM NUCLEAR GENERATING STATION
- ht n2 8
[3 WESTINGHOUSE VX-252 METER SCALE CONFIGURATION NOTES:
- 1. DIVISION LINE NUMBERS SHALL BE PER DETAIL "A".
- 2. PARAMETER AND UNITS MARKINGS SHALL BE PER DETAIL "B".
- 3. SCALE MARKINGS SHALL BE PER DETAIL "C".
r .an . .us- _.an :.:c5-i, .
.1T T
T .a r . .cos-T T T.tse . : 12- . l T Wi ir L g ..,.. , .. H . ur . .o to _. - --- m. . ::2-DETAIL "A" DETAIL "B"
- .250" _
o t,,,
.015" q mummmmme
.15F H W l
cic",,,. -
.000" -
' .200" y H .50" l m2" m-l } .050" NOTE: All Clw2N5!0N5 2 .005" l L'huS5 OTHE3 WISE SPECIFIED. I DETAIL "C" noau an . 22. asu L
PUBLIC SERVICE COMPANY OF COLORADO
~
FORT ST. VRAIN NUCLEAR GENERATING STATION DD- AIS-1 g
. Attachinent C .
WESTINCHOUSE -- KA-241 METER SCALE CONFIGURATION x.=
< N 1
I t
\
w S Q@ @ j NOTES:
- 1. SCALE MARKINGS SHALL BE PER ~
DETAIL "A".
~~"..."'~
- 2. DIVISION LINE NUMBERS SHALL BE PER DETAIL "B". f, V- l 3.
~
PARAMETER AND UNITS MARKINGS SHALL 'W : .23o : .oos-BE PER DETAIL "C". -
; i j -j .tso .oto- l e (sUh. DETAIL "B" N .oto :=: o{= ar g\\\\[///// fA p=. .
l f can
-Q." ~ .2ts-
.23r .oto- { i ... ,c, .
e; - - y ' e 3.r oa. l
. 13
._. 2ao- ..,..
DETAIL "A" d 20"
- oto" DETAIL "C" FORM 372 22 1643
.~.s. . . . .
t . u~ , Issue A
~~
g
,.,o...
- t. . .
o +i ., a i DR6EI. DESI!.,N D1RECi VE , f0P Ar4NUNC ni Toi, PANEL LEGEND: l JOBCWOS11. Tha5 L e.c i g n 5 i tc. tive ; c c . ! d -; Yuidance or ;te d e t e r i,i t n a t i c a at a in uiic i a t or Wiradaw l e q e a c. c avitei1T , , _. _ a 6 : ,. I dent i f : c a t ! ca, and i l a r !< i n g
.: h c w neow it. > udi e r > - . _ i c o i tip i. e t e a daaiarcatian J c n eic e . v e ,ia r c a t '. J a i? :1. e d +O i : ~_
f unc t i oiia L 3rc ups fren Other gi'o, - ;ndiuicua windew; < for t h s! Saleci J ,1 ., p l a c e sii 2 ri r , G iid f 'liic t G n a i. '7 F C d d i iig : - 7' /. .1 ;) DD-ASP-1 i A li ri u '.l C i d i O r .S e L O C '* l O D 3 c. d P !. a c e ni ? n t ) . Selected lagenar must covide the inuired i n f or ,!) a t i o n in c'. ear and Concise p r P 5 e ri t. a I : On, r '3 a d d i3 l e f r O ni the nor 0f a L Op e r a t i sig POSITION. As an aid i a niee t i og th;s r e q. u i r e m e ri t , cart 3in human factors principles and a ri t h , s t.m e i r ! . cor,sicerations are included a. la i n t ..a Jra( p ar t af t ;-) i ; i' .
'/ 9 . A c r o n y n)J -) n d 1bDraV 1*' ci; 39: ec .; d
!Or l a b G I. i O g d '~ t - T Ti d L !. C O n f O ii.) 'l C D c 5-' I g li O6rac"iVe D D - A S.h O Ell. G t! LlE L E 612 d d._ C O d H Q LiS e ll d d E I GEt4 ER A L A. M I N 1,11.!n L A D E L I N G R E Q U liu.:.N E N i s I 3CD aCi ! W d ri fi u n L i 3 iUr -> a n ' l ' 'O -' .. t i c ? v -- 2 71 a r"J r a v ed egend rh a ' Olive < ; *ae -
. _ Ji c ' _a
' e S e n T.; F G C_ c- ..
, . . . . , . . , - 4.
-g auta mm. . ......!-
ati a.. .i1 ,
, e HiO V e 9 ki I. f '~&
't e'<- b l. U +t
~~
- a i
( c oor d i . ., - e i e) c 4 - n1 F', : ; .4 10 ADD! TION.3L 'MRK~NG~
- i. tr h c- r nia i ! c; .; Or x m t.> a ,. . .a ; 4. :- c-
- i . ;ac a t i ai, 4, ii. ,och,ica . .
.~ '
a . ) ,.. S A l d 3 r. c e 5 Or G D :'i' d i J 4 UC' '
- 2. U ma s ccation Line 'het r e-
- 4 , *
'en
.. LEG Eiu DS
- 1. U N A M D I G U O b :.i
CD-APL-Issue A Page 2 of 13 Aim unc i a t or visuai tile tegends snaLL be spec;iic and una rab i g uo us . Word ng snatL be in c o n c ; .; e , shcrt messages.
- 2. SPECIFICfTY
- a. Tite Legends shaiL address specif;c condit;o1;.
See Detaits 1 & 2, Figure 1, rage 6 for exampte.
- b. A l a r ra legends which re fer the operator to another, raore deta i led annunicator panet Located outside the primary operatiog areas shaLL clearLv associate the remote pa ne l. (See Detail 3, F;gure i, Page 6)
- c. A la r ta legends shall not def ine spec i fic operator actions, except where the action is i mp li c i t i r.
the condition description (See Detail 3, Figure 1. Page 6).
- 3. ABBREVIAFIONS Abbreviatians and acronyms shaLi. be in accordance with DD-AAS-i.
- n. CHARACTER STYLE ALL characters shall be of a gothic style conforiaing to the dimensions defined by Figure 2, Page 7.
E. LEGEND CONTRAST
- 1. Legends snaLL provide hign con tras t with the ti te background _
- 2. Att tegends shaLL be engraved.
- 3. Windows (tiles usea on transLuminated d sptays) shaLL have dark lettering on a white hanslucent surfaca.
- 4. Legends to be di2piaced on 3p_ tamrco t r .. a t ._- s h a i. i.
t be engraved t h r o u9.- h e surIdC0 pif, .n!G ?ne eli t e , p LV using a s'ounded or s'luare ena curtet. t<- .;nagea grooves are not acceptable) IT. DIMENSIONAL CONSIDERATION 5 Th e d i raens i ona l f actors of L a b e :. i n g take on sceater jni .. because of the variat:on in operator heights. r - t a ru e c.o., iF - operatora eyes to the panel is, ther e fore , variable, and our a= taken into dCCodnt. AS th is "! i s + a n c e : llc r s d s e.5 , iha p e c c e. , ve d g dimansions of charscters, symbats, spac ng, e tc . duui e .n a _ ei4. ,Gtsae6y L ;_ ..f... )f a : i r d L t. ! i O il of ihe a la i n. ,.t
3ssue n
. Feqe 3 of :.
This is the vertical a nr; t e chaiactei. usuali> e .. "., _ c . minutes of arc. For visual anqies less t .h n 600 ueinates - t h i .- relationship is shown by: a = 152.31_1601_L where "L* is t.ieasured perpendicu!ar to tne ie.,e ef s.gnT. J r.c e , optimum conditions ( !tutoination, contrast- etc...) the h,.n.a;. e n can identify characters of the a lphaoet at sisual angtcs of 5 r..inutes of arc ( d e f i r. i ng 20*2O vision). S i ac t.: presenta t iores on 6 panel or control board in an operaV'oAoi erw i r a onee r. t do not i approach t h e op t i ta urn cond i t i or.s o f v i s i on test.nq, ih4a . c.wc c leVet riust de increased. The .n i a ; m a..; a c c e n i a d t e ans e :. ; . : = . these i.e s s then o p i i t,i u 4n cone:1icr.s has been es 1 a u i. i s. .e c m .c approx..wately 14 n,ir.utes. Th;s <atue etuates tc Tu 3. . . . m; f o r ie u i. a ii ui.; WhiCh thG d i i..c H .; i,1. , u . ->si;i s ..i l s ! ! J, I ihi.- G .e_ . se 0.f t b4.f I V$
- pliniMhm C.ArztcFer #eight :. Viednj bisf a.nce X .004 IJhcr e'. charah.r orientahlon. is Fe rpenoticida r to the obs<rver'.s
=. t e .'. p a n .: :. s oc n =:o += c h a 3 c h .-
U ne. o f s e: et. v.ci ea sec 10 cGmpec st; 1or .h- t m . c i ! 6 c '! i c :f"
- c. e . :. ' . .=
l a .c, wn, .
,.- . . rc n .
.-,-,.-...b,..-4-,i
_c. a -. n d dr .c,1 .. L. .Ms ' r.-
. .1 Dimensional characteristics of i.erjene iet t er i ng and spacing are as f o l lows . ;See Figurcs 2 6 3, Pages 7 & 3) 4 Sicokz-width-to-character-heigh + ret.~u s h a ;. L bc betwe..
6 ar.d 1 0.
- 2. mettar w i d th-to-he i gh t re= .. .; n
. - 33 3-5.
., ri.e r a l w.dih-to-he.se' ra. -- c r- 3's
- 4. h , ii i .,i u to sa a ae betuser. c,ia r s c a . - _ :a i '. b. ,- - - . _
w . si t h .
+.sc. ue w . a :n ;- u n .=
- 5. Minimum s p a s.e betwe:c : a CharacteV.
es - ia s i.
- 6. Mi: i ... u .a spa:e b a r t .s e n i - .+ a r. c- .= ,
c 'i 3 r S C i E h@ '3 h i
. N3I3 F . O- ~ b deni
O. t s .., a7 , 1# ! .. adC - - ' w ric' c w s ( t , ou , w , t i. e ,w . . 9 . n o..r ;i. - ..c-Figures 5, 7, aG are su;.'.e.1 ai a,n 'c : r ~ ;o c. s.. .. j (h- / ~j j 'f - / 0 3 windcws for spcr.fand mo u , 4 4 as hei9 hrs. E. DEMARCATON l e
~~ .u a .2 <
e sj u ' .N ' L "' i I.Jsue A
., age 4 of l, a
Groups of a L a r na w i vid a w:: (tile;> wn cr ace a _r 's c . a sC th,d , system funciioiu shaLL be 'i epoca tad f r c:a orner u ; . . d _ s .1 ar ) groups of windows by demaccot,on ( 1, e e D D - A ;. P -i O. ; , . u n e , a ' . . 1
.$O [ ec I i OD .3 n d P l 3 C eundl) t ) . I
- o ,
~i (.c . i. a s ) aich foca t c. : a c c .e c nr. r.J o w s bour.da s / 0f a :;6 aJ1 c .? d 97 Ger ; li d ;. L ' a i .: a L, ci i et, e n g e a ,, e d c oi' d e r .o9 f e.ic., i n uia ca acauad 'ae :21 +;.
C OiYlp r i s i n g on. p a r d' of the cema)ce+4 a;: 4 ;; i.'. c c, . Figi.tca 4, F a q r. '.s > C. CFECIAL MAhkT.NG7 inree pes of special er addi' ion marking.; sna . 2e engraved on the windoa (tiie.: when requ, rcd:
- 1. Remote resat required
- a. A 1/4" square with a 1 / 3 centered note snaLL be engraved in the upper ri9ht nand cocner of the window (tiie) for each a l a r ta circuit requiring
e fi!O t e re. set. tSee Figure 4, Fage 9)
- b. i h !' 2 0 9 f 3 '/ c C! 3 V D b o i. .559 m i f ' A 9 s 'r .10 ; - . .J _ f
. equ; red" .; ; , ; I !. I' a f , [ . J. CI W th "ed s : ; U-? r '; ;
(? q U .it i .
,.3 ,. , ,, . . - . . .
I bk 4 h +e.
$ a
- a. fi l a f fils signif'n- IOchnic6t speciri: 2 + i c r: . . .J s h a i !. h ,3 v e the z. p p i . c a b ;. e T e c o n i -: a i. epe. cat :n p3rU9rdph enoravea .' ': a t i. c w e ; sef' L. - ccr.wi or the alarm 9 n:.a , ' .
i .
. :: i '3. . . . e
_. i *- i . g. .. i ._ > <- ,
. i -
- t. s d -.J 4s a }. ,
o l . -l ', t l t.
\
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. Pt I. d r l'il re CW I . '7 . . ([ u t *
- a. A I. ) : % W i ad O'w s ti' ~-' w Ji i c . , 3 ". C AY; a , l' ~'O;'"i i
fot i O L a! .a ; n9 s u d t. I r'. U V G n ie a C 'A 3r' Da : ~ edgr39"d '. i the IGwe? -
-] i! t ;) a n .$ cGi~. ,. n da W i 1. ". o W ( t 1 i t. '.
D E;igFaVad C o G r d i A a ( ._ ndaibGis . 3 L i. '- * . . . .: A Il L '. h C is [acquer 04 0 -1 .i est .. . I
~~n a ..as DD-A?L-1
__ . Issue A 7 Page 5 o f 13 l DD-DD-1 Req u i r eraen t s and G u i a a nc.e fac F e e p a r i n 'a De. g r, Directives DD-AAS-i Abbrev;ations, S y m b o i. s , and Ac r avr/ s4 Setec ,on DD-ASP-1 Annunciator Seiection ana Ptacement 50UBCE_hoIERIGL2_eND_GEEEBEUCEI NUREG-0700 MIL-STD-1472D Human Factors in Engineering Design, McCormick, 4th Edition
- PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUC . EAR GENERATING STATION DD-APL-1 Issue A Page 6 of 13 SPECIFICITY EXAMPLES DETAIL 1
^=atz:
RECIRC. PU. DISCHARGE ""Ls*E'a"Ta"* SPECIFIED PRESS. LOW 6-3 I DETAIL 2 UNACCEPTABLE! PUMP <rUx, NoT SeECIr1ED. UNLESS BY HIERACHIAL PRESSURE tan = = ===o (PRESSURE SOURCE NOT LOW SPECIFIED) 6-3 O DETAIL 3 Acczer^8tt: ACKNOWLEDGE DIRECTING l-13 mtmoN 10 REMOTE
=n ALARMS 5-8 FIGURE 1 PORM 372 - 22 3443
. . ..~ . - -. -- . - . _ - - _ . - - - . -_
PUBLIC SERVICE COMPANY OF COLORADO
~~
FORT ST. VRAIN NUCLEAR GENERATING STATION
. MINIMUM LEITER SIZES FOR ALARM WINDOW LEGENDS yg2 g m SOS aus issu Emsd
#"ts Hi
$xx*
gg5 Eg$$ d Egeq 1
-mE "wa E w
sam am . l 108" - ]
.218" .312" 96" .312"
.250" 90" .250" 90"
.187" .187" 77" 72"
.156" 72"
.125" 68" .156"
.156" .156"
/
FLOOR FIDOR BENCH BOARD VERTICAL PANELS (SIDE VIEW) (SIDE VIEW) FIGl'RE 2 _ FORM 372 22 3643
- PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION
. CHARACTER SIZE
& LEGEND CONFIGURATION LETTER HEIGHT (DECIMAL) .312" .25" .218" .187" .156" LETTER HEIGHT (FRACTION) 5/16" 1/4" 7/32" 3/16" 5/32" NO. OF CUARACTERS PER INCH 3-3/4 4-1/2 5-1/2 6-1/2 7-1/2 MAXIMLH STYLE 1 9 11 13 15 17 NO. OF CHARACTERS STYLE 2, 2A 10 12 14 16 20 PER LINE STYLE 3 8 10 12 13 15 STYLE 4 7 8 11 13 MAXIMLH STYLE 1 3 3 3 3 3 NO. OF LINES STYLE 2 4 4 4 4 4 MAX. STYLE 2A 2 2 2 2 2 STYLE 3 3 3 3 3 3 STYLE 4 1 1 1 1 2 s
-e- 2 7/8" -*
2 9/16" O f f STYLE 1 1 7/8" STYLE 4 (BETA) 7/16"* BETA k I E
- FACTORY SUPPLIED, LOCAL PRODUCTION TO BE 9/16" IN
- 3 3/8" ~ WIDTH h
STYLE 2 (PANALARM) FULL WINDOW ,_ STROKE WIDTH 1/6 TO 1/8 0F HEIGHT 3 3/4" ' STYLE 2A ! DIVIDED a WINDOW
,:6 ** HEIGHT a< m
' o
- 2 23/ 32"--* -
n ,,. . y -l l 1iiae iii r
" WIDTH ---- ,
STYLE 3 1 23/32,, BET m
*WIDUI = .60 x H l k J V ** LETTER HEIGHT MEASURED BEIVEEN CENTER LINES l
FIGURE 3 FORM 372 22 3643
PUBLIC SERVICE COMPANY OF COLORADO FOPT ST. VRAIN NUCLEAR GENERATING STATION 00-APL-1
- Issua A Page 9 of 13 1
BETA MODEL 5000 ALARM WINDOW CONFIGURATION i
.094" .005
.25" SQUARE WITH BORDER CENTERED AS REQ'D \ HOLE, .125" DIAMETER
~ 1.20" y L-_.187".187"
! l }
n l
~
O t
.94" 4 r- - - - -- - - - i - - -- - - -- 1 i LEGEND l __a
, 4 ,
ENVELOPE t u I , a E _ __ _ _ _ _ 4 _ _ _ _ __ _ _Q ------ APPLICABLE f -' r------h______ L _ ~- _ _ _ _
,i l ---1 .187" TECHNICAL /'J-- ;______ - - - -- 'J i l_ _ 7D-y E SPECIFICATION ENVELOPE (ORIENTATION -*"
" *107u - *107n COORDINATE ENVELOPE D
(ORIENTATION FROM RIGHT SIDE)
- VARIES WITH LETTER SIZE SPECIFIED.
NOTE: TOLERANCE ON ALL DIMENSIONS t .010 UNLESS OTHElWISE SHOWN. [-REMOTERESET REQUIRED DEMARCATION / BORDER CHARACTER AS REQUIRED lO p HEIGHT AS SPECIFIED _____________g COORDINATE
.18r ,
9 l-0W y ca^aic= HEIGHT 87" _4.X.Y 5-8_~ t / _J t F- 1 fESE*f" SPECIFICATION OEME PARAGRAPH FIGURE 4 FORM 372-22-3643 1
, , - - - - . . - - - - - - - - - . . , , , - ---.---s-- - ,--- -, , - - - - - - - - - - , . - - - - - - - - - , - - . - - - ----. . - - - - - .
PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION DD-APL-1
- Issus A Page 10 of 13 - PANALARM WINDOW CONFIGURATION (DOUBLE DISPLAY) f 1/2 0F .75" t .010" SPECIFIED -
LETTER [ _ AIR BREATHING _ .
+
PRESS. LOW "MI " AS SPECIFIED D P ,
.50" 1 010" WINDOWS 4 AIR BREATF NG TEMP. HIGH I I I I I NOTE: LEGEND.SHALL BE CENTERED ON SINGLE LEGEND WINDOW (TILE)
FIGURE 5 PORM 372 22 3443
PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION DD-APL-1 Issum A
- Page 11 of 13 ALARM WINDC LEGEND CONFIGURATION BETA MODEL 5000 FOR VERTICAL SURFACE MOUNTING ,
l BETWEEN 77" & 96" ABOVE FLOOR O
.125"
.94" ,
I - t t
.125 SEE DETAIL
_ } "A"
,- c
.187" HIGH
.187" ~ ~
LETTERS (SEE DETAIL "B")
.036" i .005" r
NOTES:
- 1. . Characters to be sized per T -
Details "A" & "B" as specified. .'50" 2 : .005"
- 2. All chara:ters, symbols, and I lines to be engraved using ..
i ,! , rounded or flat bottom cutters. ~i '"" ("V" cutters are not acceptable)
- 3. All engraving to be black filled, DETAIL "A" unless specified otherwise.
- .027" t .005"
- 4. Tolerance on all dimensions '
l
.010" unless other wise shown.
-Wo T= =- - .187" t .005"
.ii., ;..
*- .112" DETAIL "B" TIGURE 6 vonu 212 22 ac l
- l. _
, PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION DD-APL-1 - - Issue A
.A Page 12 of 13
- ALARM WINDOW LEGEND C0hTIGURATION I
BETA MODEL 5000 FOR TILTED PANEL MOUNTING BETWEEN 90" & 108" ABOVE FLOOR O
.94"
.109" l
I - t t
.109" .-SEE DETAIL
_ l "A" i ,.
.187" HIGH
.187" _
- 1.ETTERS (SEE DETAIL "B")
.031" .003"
...i..
NOTES: Mo T -
- 1. Characters to be sized per Details "A" & "B" as specified.
M .218"
=
- 2. All characters, symbols, and Y
lines to ha engraved using rounded or flat bottom cutters. - .130" ("V" cutters are not acceptable) DETAIL "A"
- 3. All engraving to be t, lack filled, unless specified otherwise. - .027" t .005"
- 4. Tolerance on all dimensions '' '
.010" unless otherwise shown.
Wo F -
.187" .005" W; _
o... . i..
.112" DETAIL "B" FIGURE 7 PoRM 372 + 22 3443
l
. PUBLIC SERVICE COMPANY OF COLORADO FORT ST. VRAIN NUCLEAR GENERATING STATION ,
PANALARM WINDOW LEGEND CONFIGURATION (ALL MOUK2ING HEIGHTS) t '
.75" I
g
.50" 4
l l I I I NOTES:
- 1. Characters to be sized per
.041" .005" l Detail "A" as specified. tt 'Ir'iefi
- 2. All characters, symbols, and ,,
4 lines to be engraved using rounded or flat bottom cutters, o MN
-t- ,
~
("V" cutters are not acceptable) T
- 3. All engraving to be black filled, i_,, . .250" i .005" unless specified otherwise. '
, io.m ,.
~ " .150" i .010" DETAIL "A" FIGURE 8 FoR94 372 22 3642
vom m 6 DD-ASP-1 s .L a o & n Page 1 of 9 2RAF DESIGN DIRECT VE FOR ANNUNCIATOR SELEC7 ION AND FLACEFiENT E0B EWQBL __ Annunciator warn,na 5,5ue.i5 are The p . .,i a r . c_-nat r O o .it . interface to immediately aiert tna Operator O Setacted -u .*iaca; change 5 or out of toleranco conditions ;o p i.a n t ryStemS. r. r, u . .._ . W a r sli n q SY5teMS C Oils i S T Of asi auditory Siert, a Vi5ua! d 1.5 p !. -s y a .' i .i an Operdtor response s y s t ::in . The auditory alert and operator reSponsm SYSTEM Ge5i90 i5 9 e rie r a i. l) TIO t S u b j ni- t a d tO C On t Iliua l 3LteraIion a5 3 re5uli Of , i a YI i eq u i P M e ri t and OperatiOnai. change 1. The vi5ut display 5 are Subjected TO V a i- I G u 5 ._ n a n g e 5 . A i. [ C h a rig e;- Made tG the alarm Sy5 tem and n 3i t i C u !av i i.r to ine vtSuai ci i S P L a ys need to be made i ri a 'it d Vir's e r WTiiCh e iis u i e 5 e6ie a n i 0 9 aGd Vaide TO the O p e ';' .i ! O r . i 7 ::: l'a i l u i e tO f110C i i Olia L y l a c a '. O _t ii a 1. a i ' m Window W i i. !. 5 ., ;if.:ai s > reduce the v a i. u e of tha t ai. arm. ;:mpropm Laoeling may render . alorm U. S e i. e 5 '" ab _ ri O p e r' a i i Ji9 aid. I'h e purpose Of thi5 design directive i5 to addre55 parameter Setection, func iOriat groupina, pr:ocitation, ana contrOi. r e q u e ri c e s . Labelin9 Of a l a i ui Window 5 ( O' tile 3) W6 l. i. O c3 addreS5ed Oy I)D-APL i, A nn uric i a t o c Panel Legends. YE5I,.5CIIOd CCild155bU((Cf3E The fi ;r requiremeni +or an effeCreve a L a e ni ar annun 'aFor ry_ ea 1 .1 rapid p eilO f f a t i On Of the c,p er a t or s a Wa r e ,L ;2 u ri d .. - a riv a Id a i r. p cond;icion5. condition ir Given One this requiriog raquienieot,
. olm e d # o t e i
o~: ofcr f a i. i w t n f -i a: o . n. a ai.grmad t t, a C Grid i t i On doe 5n't i014 ire a iime.+ ^" .Ca FerpOnSe. Ihd ' u iid ; E i 0 6 should be con 5idered a status and not an ,.i i a r m , It . m r> 0 r t a n t rhat a d i 5 t i riC i I O ri between a tarms and = < 3tus naic, .Oos b .e --
.i5aad atid Ma i n ! .i e iid d iam D0TG th design _i n d O e- - e a !
cM i G i6 C D , . I. /iL W.ri c Nia.iE TEii .MLE:J ! IUN SELEC 'O- COMIDEFAiIur.,
. P a s a in d t c c cat.:;ted ' ~ r ic J ..J a l'e C n n i C a i .i p O F ' f i C .i t
. G., w li e ' ire !it :tf.>
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~qint iOi' -3. .h , i i 1 IdCl GardiuGEUi) lna l d s. u . t l' i') r
.ra" .. i dV Pc1Gr CL .s u C l i . > e d . I I G 11 ;.- a d C Q ui ! 6') C t - r e _-.,,.-__-.._.-._.-.-.,..-o-_._,...-..,___,.._,.m,-.,-,_..-., ..-. ..___-_,, - , _,,-_..,.,_,._m, _ _ .
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'DD-ASP-i
- ISSUE A Page 2 of 9
- 3. Parameters seLectea tur a m miog nat i r e r. u i r -
i definite operarce acr :: n to carcecr 4 ,o cene ,, or mitigo t r- th- ' ,n: or 2h c anc > - r 1 i B. SET POINTS - Th e L i ni :s or aet points rcr .nitia+ing t ;, _ annunciator warning system s h a !. t be establianed ic ,_:t the following goats-
- 1. Alarms shalL not occur so frequent'> as to oc considered a nu;eance by The operaTorr.
a i 2. Set points snaLL be estaaLished to qive operato-acequate time to respond to the waring cund. ua - ce fore a seriaus probtem deveLaps. C. MULTICHANNEL CR SHARED ALARMS
- 1. Annunciators with inputs from more than one p lant parameter set point shaLL be avoided, unless the requirec operator action is identical for a l i.
points combined wi thin a single annunciator.
, . , _ . , , , r _
(y. , _m... - ,,
~ ,~, ,s a i%.
L.%~
,n n-- ._ . .
- 2. Where mutti-input annunciators must be used, an
{ alarm printout capability shaLL be provided. The < specifics of the a larm sh ou ld be printed with sufficient speed to capture aLL alarm data. D. GENERAL ALARMS 1 Alarms that require the control room operator to direct an auxiliary operator to a givon plent location for mac i fic i n form., r i on shaLL be avaided. F. emote systems that are not controlled fro n the c o n ".'r o ' room mai
- utilize a generat alarm, provided toe required corrective action is conducted a+ the remote Location.
E. CONDITIONS FOR ALARMING
- i. System response or e1uiameni statos a arma s % i. .
indicate s'rrtem conditions or equipment r,iatus, a r,d not mere!.y : o n t r o :. posi t ion. ange; :n display status shaLL _; ; y n i h c h a n g e -s . in funcciene. status iather tnan r e a u l. t z af an t ,'o i cic t ua r i an a j. O n e .
- 2. POSITIVE INDICATIO1S 1
svum uwe n
. ' D D -- A S P - i ISSUE A l Page 3 ot' '?
- a. Abnormal cond;tiuc. nu L su nferr t
- . L line : - - _ ,
a a ., n_c .- !! >
- b. The a t a v; = af >x- ca:: a h a: a .i t >><aa ci : i, window shalt no+ Le _ ,d to dcc -
- Li a i f O Y) C t I o n " , " il o 10' Gr " O a i -c i tolerance" cond. ion.
- c. The absence or ex t i ng u i shu)en t af a n a t a r .a window shaLL not be used to indi_ats a
" ready" or "in-toterance" condition.
II. AUDITORY. AL'~RT A. LOCALIZATION
- i. Auditory coding t e c h n i q.u e s shaLL be established and maintained to enable the operator to localize a larm signals for certain sources or Locations within the control room. -
- 2. Coded anditory aterts shaLL be emittad from tne location of the associated visual d i sp lay.
B. INTENSITY
- 1. The signal shall be such that operators can reliably discern the signat above the ambient control room noise. A nonii na l va lue to 10 dD(A) above average ambient noise is generally adequate.
(See note beLow)
- 2. CONTROL -
Signal intensity, i f ad J us tab le, shaLL be controlled by administrative procedure.
- 3. LIriITS -
The signal shaLL capture the opera tor 's attention but shatt not cause ireitation or a startled reaction.
- 4. DETECTION - Each auditory signal rhaLL be adjusted to result io approximateLy equeL deteciion '
-se s at normal operator statians io the p r iru a r y operating arc .
- b. Signal i ntensity shalt not be usea rar atarw
- i. o C a l e Zat 'Ji .
NOTE: The aiiferenca in :2 ,,eir t i c o r i tra . c. n d . - given in dec i b les , i t, expressac s fait c Number of decibels = 20 log
%MW ahI 1463 9 1 e
*DD-ASP-i ISSUE A Page 4 of 9 in which P and P represent the pressures of the two sounds.
The American NatiandL Standards Institute (ANSIS ,, established a standard to which sound ,asei me t e. - shou ld c o n f o r ia . This standard requires that tnce, atternate f r e q ue ric y-r es p onseo cnoracteii;1ics de p r o , : 4. c in stch instruments, these consisting of weighriaq networks (designated A, D, and C) which selective - discriminate against Lcw and high trequencies .n accordance with certain equal-Loudnes.; contour _ Recommanded practic.: provides for using a ;. L Pncae weaghtings, but, in any event designating any a ng e ano that is used in presenting data, such as " the A nei m tad sound level is 45 dB'. C. Auditory coding may be used +o indicate aLara priority, however the total number of destinct codes utilized in the control room shaLL not exceed seven (7) as shown by Figure 1. III. VISUAL ANNUNCIATOR PANELS Annunciator panets are organized as matrices o f visua t alarm tites. These matrices, separated into grcups by function, are positioned along the top of the control boards. A. Visual a larm panels shaLL be Located acove tne related controts and d isp lays wh ich are retuired for corrective or diagnostic action in response to the alarm. D. LADELING
- i. Each p a n e i. shou Ld be > l e n i i " . .e ci by 2 t. a b e i above the panel. Panel LaacL _6 ze snati be i;.
accordance wi th DD ' AD-1.
- 2. Character size a r.d font z i,a L L be 6n accorcance with DD-LAD-1.
- 3. Window (or tile) Labei.ng with DD 4P' 1.
- a. Functional i e n e n d :. s h a t i. 4 accordance with DD-APL-1.
- b. Coordinate de ianat3 27.5 n .4 e o m j , 01 _d .
the i. o W e i i 's h i ~ h a n n t.U ndr ut i i) C. n W i nu :~ or tiLa. Charac ter font and .i' ,,mLi c. .! in accordance with M M t. - 1 C. FIRST GUT ANNUNCIATGRS
nm .. . , DD-ASP-1 ISSUE A .l Page 5 of ?
- 1. As an aid to diagnostic procedures, pravisions are made for i d e n t i f y i n c. the initiating event f;.s*
o u t .i aszecialea with cecla: - aub matic p.
- 7 stems.
- 2. First out pans;.s are i.isted :, y 'i' a t . 1 i3 IV. ARRANGEMENT OF VISUAL ALAIM s NDOL iL .
A. IUNCI'IONAL GFOUPING
- 1. Visual 4Larm tiles shaLL os grcupea by t uac t 10: c'
~
systea, within each annunciator pane ,. rec e .< a m p l e , area rad i a t i on a la rms sha '. ;n, g r o uw: .a n I-03A panel, not spread throughout tha conirct room.
- 2. Functional grcuping s h a L 1. conform ta the group assignments shown by Table A.
D. PRIORITIZATION Lecause of the large number o f annunc i a tor- f o% nd in control room and ihe L kelihood that nutnerous alaims may come in concurrently, priorit:zation sha L L be applied such that operators can differentiate the most importa,,; or serious aiarms from Less important ones. Numerous erio.'itization schemes are passible and raany appear f eas ib le and meaningful when considerad singalac i ty, however when applied aLong with other cciteria, the postulated valve dimmishes q u i c i< t y . (i.e. radiation alarms as f i r s~t priority alarms, however the same documents recommend aLL radiation alarms ce aLaced on a dedicated panel.)
- 1. Prioritization shaLL be cased on a continuum of importance, severity, or need for operator action in one or more dimensions, e.g., Lil<elihood of ieactor trip, release of radiaiton.
- 2. Coding of priority Leveis shalL be accomplished by locating the hiqhest priority a i. a r m s at the highest panel elevation with lower prioriry Levels in descending order positions.
C. REPETITIVE GROUPING
- 1. Arrangement and Location Alarms for repeated ai .ad u nd a n t ystems s h a i. i have +he same arrangement and LucaF:on rela 1 , 's
= +ma ws a
.g DD-ASP-1 ISSUE A Page 6 of 9 the placement of control: and indications for eac',
repeated or redundant systems.
- 2. Order of Repetitive Grcupings Alarms for r eix e a t ed or reduncant < - a; : 4- .
p l a c c.' d i ereaied or im ;ft to ight top bottom. (hirror .oaging ;; to oe n o . n+ d ?' V. VISUAL ALARM RECOGNITION AND IDENTIFICATION Spec i fic quidelines for visual recognition and ;dentification of alarmed tiles foiLow: A. FLASHING - fhe spec i fic tile (s) on an annunc,atar panei. shall use f i. a sh i ng ittumination to initially indicate an alarm condition. D. FLASH RATE - Flash rates sha ll be from three to five flashes per second with approximateLy equal on and off times. C. FLASHER FAILURE - In case of f la sher f a i Lure of an a larmed tile, the tile light shall illuminate and burn steadily. D. CONTRAST DETECTABILITY - There shall be high enough contrast between alarming and steady-on tiles, and between illuminated and non-illuminated tiles, so that operators in normally ittuminated control room have no prob lem d i scr i m i na t i ng a larm i ng , steady-on, and steady-off visual tiles. E. ' DARK' ANNUNCIATOR PANELS - A " dark
- annunciator panel concepi sha L L be used. This (nea ns that under normal operating conditions no annunciators wou ld be itluminated; aLL of the visual tiles of the annunciator panels would be " dark'.
F. EXTENDED DURATION ILLUMINATION - If an annunciator tile must be 'ON' for an extended period during norn.a t operat.cns (e.g., durinq equipment repair or r e p L a c e t..e n t ) , it shaLL be-
- i. DisIinCiiVe[Y CCded 7O! pus's ! Va I C'c 3 :ii i ' i o n durino this per:od, and
- 2. Controlled b, administrative procedures.,
VI. LfiMP REPLACEMENT l
__ DD-ASP-1
, ISSUE A Page 7 of 7 i
l AlL alarm window Lamps shaLL be repi.aceabLe by the operatar witnout the need to disassemble the Lamp nousing or utis i:e hand tools. A singte bulo extraction and inrerc!cn -i i c - a c c e p t a t. L e . VII. CONTROLS Controls for operator response ta tne annunciatar s , ; na include silence, acknowledge, reset, and test controls. A. SILENCE Each set of operator response contrcLs shal: include a silence control. It shaLL be porsible to silence an auditor / atert ;;gaaL from any set of annunciator response controls in the primary operating area. B. ACKNOWLEDGE A control shall be provided to terminate the tLasning or a visual tile and have it continue at steady Li.uminatin untiL the a L a r ra is cteared. Acknowledgement shaLi be passible onLy at the control board where the alarni originated. C. RESET Lf an automatic cleared a l.a r m feature is iot provided, a control shnutd be provid2d to reset the n stem after an a Larra has cleared. The reset coneroL .s h a L L sisence any audible ; i 9.ia L indicating clearance and shouLd e x t i nc; u i sn tite illumination. The reset control shaLL be eftective onty for the annunciafor panel where the atarm initiated. D. TEST A control to test the auditorv fig: a i. and ft1snin'] illuminat on of a L !. t:Les in a panel sha!L be proeidec. Periodic testino of annunc ia tors sha L L be v nuired a n :J controlled by administrative procedure VIII. CONTROL SET DESJ.GN
*to4eiaunuue pue uc;4raig!;uepi leued /. o pexapu!
og 11eys se tn pano te a .s u o d s a .t .to 4 8:f ! aun uuv -- SNIX3CNI '8
'9 a o ..t lot 4uo? aq4 e! alqe1!eAe so 11eys sa_tnpano_td esuodre J.o4etaunuuy A1111gy119Ay v S3V00300Md 3SN0dS31! UDIVIDNnNNV 'XI
- s r .:, J ;. '.i o s ioleiaunuue go dnoJ6 ay4 6 u ! t. e ? .,t e tu a q r-1;C. .; U C a 'o4e!aunuUe Jo (4n o t 6 aql bu!peys 301o3
- I,
- pesn aq l l e y s.
r;ar t t uqaa 4 6 u i m o i l o.t eq4 j. o auo uo!4!ppe uI t_In Oc y .; i m a a u e p ..t o n a e u t u o i 4 ! u b u aa _t /.s e a aof papon adeys eo lleys s l o _t4 u o ? asuodsaa ..t o .1 e i n u n u u V - SNIG03 1081NO3 '8 be!yaeaa ,pu;1q, ate 1!1tael o4 s c: : ul cp inoq 1 a a 1. '.t o a ruaJaj;jp 4e u o i t e c o '; GA ! 4 ela t p '.! e .; U. a t!! O b i. i e J 2 0 Oly E i E t!4 ~4 /s e y 1 ] e ys F] oJ.) uo a t ol e I. attn U U e
,! o "eno;6 an!4!4aday - c.jq0MS 3AIII13d3M .-JO DNINDI11 sod 'V 6 Jo 8 a6ed u, e g.
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- DD-ASP-i 4 ISSUE A l Page 9 of E 3
G2SOCleIED_DIRECIIVES DD-DD-i Requirements ana Guidance for preparing Des 2-Directive.s DD-APL-1 Annunciator Panel Legends DD-CDL~i Control Board Layout DD-LAD-i Labeling DD-SWI-i Switch Selection 1 1 SQ U B C E._ td e I E Ble L S _.8 tf D _ B E E E E E tJ C E S I
- NUREG-0700
- MIL-STD-1472D
- Human Factors in Eriginonring Desian McCormick, 4th Edition i
e t t t i 1 L._.....____.___._,__ _.__..._.m,.____._.___,,.,.._,_.,.,_,,_.__,_ _ _ _,_. _ ._ _ ,_, ,__, _ _
t' DD-CBL-i ! f. Issue A Page i of D ==== % Ar I DESIGN DIRECTIVE FOR CONTROL BOARD LAYOUT EUBEWORD1 Control panets combine various displays and controls into a human-machine interface for plant monitoring and operation. These controls and displays are mounted in panels and panel console arrangements generally referred to as control boards. The exact location of a display or control is governed by three (3) factors.
- functional relationships and grouping
- anthropometrics panel structure Since human performance is strongLy affected by- component arrangements and panel design, operability must be the criterion apptied to design changes after first determining that changes are in fact required, and that the change wiLL infact enhance operation.
Good panet layout contributes to operability in the folLowing ways: lt provides visual organization, which helps the and 3 operator quick Ly and accura tely locate, iden t i fy select controls or displays of interest.
- It reduces errors in operating controls.
It emphasizes important elements on a panet, further reducing the time and risk of error in Locating them. Good panet layout is characterized by severaL if not aLl of the fotLowing conventions: SimiLar components are installed in smaLL and/or irregularly spaced arrays, as an aid to rapidly locating and identifing particular instruments.
s l DD-CBL-1 Issue A Page 2 of Components related by function are either physically located together or visually Li ed togethe . Component groupings that are repeated in severaL places'are laid out consistently. Component operation and movement comply with population sterotypes (common expectations). Unrelated components-are differentiated.
-Design features of components, such as shape, color, orientation, and case or bezel style, provide consistent and usefuL visual organization.
SELEGIION_6_ DESIGN _CONSIDEBoIIONS I. SCOPE f A. This Directive identifies and defines the following: i
- i. Organization principles that govern changes to the control boards.
- 2. The physical location constraints required to comply with basic antropometrics.
- 3. Acceptable demarcation and association enhancement techniques.
B. The scope of this directive does not include the process of establishing the 'need' for control board changes. Procedurp ENG-2, Attachment P Lists those items which shouLd Ke satisfied prior to initiating any change. C. The scope of this directive does not include the design of new control boards and panets. (New panet and board design criteria may include considerations not applicable to existing designs) [I. IDENTIFICATION OF THE-ORGANIZING PRINCIPLES The organization of components within (or on) a panel sha ll reflect one or more of the following:
.c. DD-CBL.-i Issue A
.- Page 3 of
- A. The functional relationships of the plant subsystems and equipment corresponding to the controls and displays, such as:
- 1. The order of process equipments along a flow paths panel Layout becomes a miteic of the process to the ,
extent that this principte is fotlowed. (NOTE The Fort St. Vrain control r oorn boards are not configured to enable extensive f low p a t h m i tn i c s . Individual systems are organized vertically with primary heat generation through electrical production process progressing Left to right)
- 2. Re la t i onsh i ps of support or auxiliary functions to major systems, e.g., Lube ciL and seal steam valves to boiter feed pumps.
- 3. Common activation and/or operation, e.g., engineered safeguards or equiptnents that activate on a c o m tn a n signal.
B. Functional relationships among the controls and displays themselves, such as:
- 1. SitouLtaneous or sequential observation and/or operation of the controls and displays thernselves; for example, taaking cotop a r i sons among severaL displays, monitoring a display for feedback while manipulating a control, or performing a valve Line-up.
- 2. I ns t r utnent-range re la t i onsh i ps , e.g., start-up, low-power and power, or source, i n t ertned i a t e , and power Level nuclear instruments shouLd follow the sterotype of dynarnic increase upward or rightward.
relationships among equipments S' C. ' Geographic
- the '
corresponding to the controls and displays. D. Nominal ordering, e.g., circulators A, B, C, Da preferred order is left to right, top to bo t torn for ascending nutobers or Letters. af E. Frequenc/ or itopor tance of uses the most often used or
) most critical dispaLys and controls should be in privnary visual and control envelopes.
III. ORGANIZA110N CRI1ERIA
DD-CBL-1 Issue A n Page 4 of A. Systems -and redundant subsystems shaLL be ordered horizontally around the control boards. (See Figure 1, Page _) B. Backup or standby support component swi tches sha ll be organized' ver t ica L Ly. (See Figure i, Page _) C. Indicators and- alarms .shall be located above the associated switches or controls. D. Controls, indicators, and a larms sha ll be grouped wi th other controls,-indicators, or. alarms for that system or subsyrtem. IV. ANTROP0 METRIC CONSIDERATIONS Genera L Ly it is recommended that equipment dimensions accommodate the 5th to 95th percentile of the user population. Five percent of the population represented can be expected to measure-equal to or smaller than the 5th Percentile vaLue, while 5 percent can be expected Ao measure equal to or larger than the 95th percent i Le value. Thus the range ~from the 5th to the 95th percentile takes in 90 percent of the popula t ion. No anthropometric (human measurement) studies have been made to establish per t inent character ist ics of commerical nuclear power plant control room operators as a separate population. The equipment location dimensions recommended here have been l derived from studies of military personnel. Measurements for adult females define the 5th percentile. Measurements for adult males define the 95th percentile. (This procedure results in more than '70 percent of the total measured population being included in the range from the 5th to the 95th percentiLt.) A. Equipment Height on Bench Boards (Stand-up Consoles) i 1. Control Height i
- a. Controls shaLt be placed in an area between 34 inches and 63 inches above the floor.
- b. Controls requiring precise or fresuent operation j and emergency control- chould be placed in an area 'between 34 inches and 53 inches ahnve the floor.
I 2.- Display Height i S
DD-CBL-1 Issuo A Page 5 of
- a. Displays shaLL be pLaced in an area between 36 inches and 80 inches above the floor.
- b. D i sp lays that must be read f requent ly or precisely should be placed in an area between 50 inches and 65 inches above the floor.
B. Equipment Height on Vertical Panels (Boards)
- 1. Control Height
- a. Controls shaLL be palced in an area between 34 inches and 70 inches above the floor.
- b. Controls requiring precise or frequent operation and omergency controls should be p laced in an area between 34 inches and 53 inches above the floor.
- 2. Display Height
- a. Displays shaLL be pLaced in an area between 41 inches and 70 inches above the floor.
- b. Displays that (nust be read frequently or precisety shouLd be pLaced in an area between 50 inches and 65 inches above the floor.
C. Alartas, Controls, & Lisplay Horizontal Displacement
- 1. Meters, alarms, and other d i sp lays wh ich inust be read whiLe a control or switch is operated shall be located horizontal to the control station in accordance with Figure 1, Page _..
- 2. Lateral spread of controls and displays -
The opera tor sha L L bv ab Le to perform task sequences at a given work station w i t h ra i n i mura r epos i t i on i ng . fhe amount o f opera tor movement required depends on the arrangernent of controls and displays, not s i tnp L v on the la tera l d irnens ions of the segments of the control board. The toa x i tnum Lateral spread of controls and displays at a single-operator work station shall not exceed 72 inches. D. Control Distance From the Front Edge of the Console Controls shall be se t b a c k a in i n i rn u to o f 3 inches from the front edge to prot 9ct against accidental activation. Setback (nea s ur ernen t for switches on FSV control ocards measure to the con ter t ;ne o f swi tch sha f t.
DD-CBl.-i tssue A Page 6 of V. DEMARCATION AND ASSOCIATION ENHANCEMENT Demarcation ano location aids are used to help clarify component identification and functional relationships relative to other components. The major objective of demarcation ano location aids is to minimize the opera tor 's search and selection uncertainities, which could lead to delays, confusion and errors. Location aids also improve the efficiency of information transfer to the operator and assist his decision-making process by organizing panel elements, minimizing visual clutter, optimizing desired associations between panei etements, and standardizing information presentation. Location aids atso can facilitate learning and retention of where components and controls are located, especiaLLy for new operators. The applicat ion of location aids (e.g., Lines, color, visual shapes) to control panels will intentionally or unintentionally affect the operator's visual perception of the panel's content. Whether or not the enhancement is successful depends to a great extent on the designer's knowledge of visual perception. This section addresses the undertying principles of perceptual organization than can be used to provide operators with visual aids on control panels. Based upon research findings by experimental psychologists, this discussion emphasizes objectives and cautions related to designing visual aids that correspond to the visual perceptions of the operator. A. ASSOCIAT10N Components appear to be associated or dissociated, depending on how they are presented visually on the Panel. Spacing, shape, color, and Lines can be used to aid the operator in identifying Logical retationships by visually associating related components. However, the opera tor can be hindered if there exists no correspondence between the relationships he perceives and the actual relationships between components. These techniques are illustrated in Figure 3, Page _.
- 1. Spacing - The components in Figure 3 (a) represent a typical configuration found on a control panel. No sense of grouping is provided. The spacing of components in Figure 3 (b) conveys the existence of three groups. Lf these groups correspond to logical groups, the operator is aided. If the spacing contradicts Logical grouping, the operator will be misled. Since it is not possibLe to greatly alter component spacing for add-on changes, other techniques can he used to associate components or to
DD-CBL-1 Issue A Page 7 of x override the undersirable groupings created by , spacing. a
- 2. Shape -
Similar shapes are seen as forming a i group, as shown in Figure 3 (c). This technique is generally implemented by using different style
- bezels or knob shapes, however shape coding for FSV control boards will be restricted to differentiating special functions within a group and not for differentiating select groups.
- 3. Color -
Components having a common color a lso are seen as forming a group, as shown in Figure 3 (d). Color i ds perhaps a stionger cue than shape. Color coding of components shaLL not be used to form groups on the FSV control boards due to the assignment of color for function coding to pushbuttons, indicating lights, and Labets. Color patching of the control board is an acceptable method to be utilized on the FSV control boards.
- 4. Demarcation -
A line enclosing several cornponents causes them to be perceived as a group, as shown in Figure 3 (e) and Figure 6, Page _. The simp Ler the shape formed by the line, the more apparent is the result in a weaker grouping. Using beveled or rounded corners results in a stronger grouping, however. i
- 5. Mimic Lines -
Components also may be Linked visually by connecting them with a s i ng le line. ? These lines may represent either a signal path or process flow. Due to the density of the FSV control boards mimic lines shoLL ba used onLy in select Locations to associate interrelated controls. D. DOM [ NANCE Components can be viewed as more important or prominent than others, depending on the visual ' strength' of their appearance. . Line width, color, contrast, or combinations thereof can be used to convey a sense of functional importance to the operator. These techniques can be used in a positive manner and are i l lus tra t ed in Figure 4, Page _.
- i. Line Width and Contrast -
Figure 4 (a) illustrates the effects of line width and contrast. The heavier and wider lines convey the intended meaning of a major group, with lighter Lines indicating various subgroupings.
DD-CBL-1 Issue A Page 8 of 1
- 2. Color Patching - Colors wiLL convey dominance when they are brighter or visually stronger than other surrounding colors. In Figure 4 (b), the strong colors visually dominate the intended group
, demarcation. StrongLy colored areas may convey an 1 importance that may not be intended and atso can add visual clutter to a control panel. Generally, strong colors shouLd be avoided where they are used for purposes of association. Such colors add to visual fatigue and clutter and provide poor backgrounds for Label readability. Carefully selected neutral color tones are much more effective for association purposes and do not create a sense o f c lut ter. C. CLOSURE Another normal human percentual tendency is to ' fill in the gaps" or visually extrapolate from existing graphic cues. In Figure 5 (a), (Page _) an enclosure is effected, even though only the corners are indicated. Figure 5 (b) illustrates an extrapolation of Line cues j that act as top brackets. The observer understands that two vertical groups are formed. This is a top-down phenomenon that does not work when brackets are pLaced at the bottom. This type of perceptual cue is used in hierarchical Labeting schemes. A hierarchy works from the top down, and the h ierarchica L graph ics ut i li ze the paraLLet perceptual response. [f components are labeLTpd at the bottom, the top-down hierarchical flow is dif ficu L t to apply. D. UNIQUENESS A seldomly used code has a speciaL property caLied uniqueness, which aLLaws it to appear perceptually distinct from surrounding components. However, the effectiveness of this code can be degraded epasiLy. For example, the uniqueness of a red pushbutton is lost if it is surrounded by many red Lights.
- 1. Color -
Color patching the control board area I which contains a particular grouping can provide the i operator with a quick and obvious connotation of meaning. However, this uniqueness is Lost when the area is surrounded by simiLar colors.
- 2. Shape - Uniqueness a lso can be achieved by shape.
Again, when similar shapes are presented in the same panel area, the intended uniqueness is lost. The application of a number of different shapes may aLso
DD-CBL-1 Issue A Page 9 of minimize the intent by requiring the operator to I c omsn i t both the shape and its associated function to mornor y .
- 3. Mimic L. i nes -
Mimic Lines generally are good techniques for aiding the operator. However, if a panel is overloaded with mimic lines, or if the control bIUrd has a high density of controls, and indications, clutter resuLts and the uniqueness of each individual s diminished. The intended visual aid for Linef# the operator becomes a potential cause of confusion, delay, or error. Th i s somet i rnes can be overcome through the use of color to enhance Line differentiation, but this technique also can be overused.
- 4. Demarcation Lines -
A simiLar concern for uniqueness shouLd be applied to Lines of dernarcation. If overused, the intended d i f feren t ia t ion is lost. Dernarca t i on Lines shouLd never cross. Also, beware of unintended lines that result f r orn the edges of component bezels or simiLar
- artifacts. These roa y conftict visually with lines of demarcation or add clutter. One technique for (na k i ng demarcation Lines unique from aLL other apparent Lines on the panel is to use color shading to fill in the group, rnaking it visually distinctive and unique, as in Figure 6, Page _.
E. ESTHETLCS While operator effectiveness is the pr irnary criterion for i mp lernen t i ng a visua l a id, another factor in the operator's perceptual response process is a sense of esthetics. In general, a welL-planned and effective enh a nc ernen t shouLd lead to a visual aid with a satisfying appearance. If an enhancement does not , 'Look' right, there is a reaL possibility that it was i rnp lemen ted incorrectly. F. STANDARDIZATION . The need for standardization ( c on f or tna nc e to convention) through the control boards is a welL estabilsped f ac t. In essence, this means that consistent pattei4 shouLd be ma i n t a i neil in a L L of the interfaces between the operator and the plant. Providing an exact prescription for standardization of all potential control voorn changes is beyond the scope 4
DD-CBL-1 Issue A ' Page 10 of l of this document; however, the following generic principles for standardization shaLL be considered.
- 1. Avoid sophisticated or overty campLex techniques for encoding operator aids. Keep them as simole and se L f-evi dent as poss ib Le.
- 2. Avoid excessive variations of a basic code or operator aid. For example, avoid associating different meanings with different, but subtle, variations in Line structure and color.
- 3. Incorporate existing conventions, if possibLe. The requirement for operators to recognize different meanings for the same cue or to recognize the same meanings for different cues can be etiminated.
- 4. In some cases, it may seem necessary to change existing conventions. In these situations, speciaL attention shouLd be paid to the strong tendency for
- an opera tor to revert .to o lder , previously learned habits under conditions of stress. Two quidetines are offered
- a. Avoid changes to existing conventions, if possibLe.
a
- b. Where change is necessary, make the change as obvious as possible to aid the operator in recognizing the new convention and maximize acceptance, familiarization, and training.
2
- 5. In summary, when designing visual aids:
- a. Consider the visual response process of the operator;
- b. Decide what information t o h i g h L i g ht
- c. Determine what organizaiton to present;
- d. Apply Principles, remembering that they can work both for or against what is intended.
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DD-CBL-1 Issue A Page 11 of l l l I. DEMARCATION LINES (See Figure _ Page _.) A. Lines demarcating systems sha L L be .375' in width and b Lack in color. B. Lines demarcating Loops or redundant subsysteros within a system shalL be .250' in width and black in color. C. Lines demarcating subsystems within a Loop or redundant subsystem sha L L be .125' in width and b Lack in color. . II. COLOR PATCHING A. ALL colors selected for background coding sha L L be natura L color tones. B. AlL colors selected sha l L have a reg istered nutaber or other ineans of posi t ive identification. C. The registered number or other positive (neans of identification shalL be recorded on the control board elevation drawing or on the control board BILL of Materiats. III. PROPOSED CHANGE EVALUATION It is crucial that operators be actively involved in the preliminary design and evaluation of any type of panel taodification. Their participation wiLL not only ensure a broader base on which to evaluate a potential change, but aLso the acceptance of the modification prior to implementation. AlL proposed control board changes shaLL be evaluated for compatability with the man-machine interface. Location, grouping, demarcation, and Labeling aLL combine to create a control scherne tha t is either an asset to the operator or detrimental to control tasks. The operational control board is not the place to exper iment with the arbitrary p Lacernent of controls. This discipline, Like every engineering discipline, is an iterative design process--seldorn is the op t i rna L so lu t i on ach i eved the first tirne.
DD-CBL-1 Issue A Page 12 of 5 i eSSOCIGIED._DIBECIIVES DD-DD-i - Re tu i rement s and Gu i dance for Preparing Design Directives DD-AAS Abbrev i a t i ons, Symbols & Acronyms ~ DD-LAB-i-Panel and Component Labeling DD-SWI-1-Switch Selection DD-ILS-i-Indicating Light Selection & Location DD-AIS Ana log Indicator Selection DD-CSN-i- Cont r o l ler Se lec t i on DD-ASP Annunc i a tor Selection & Placement SOU8CE_doIE810LS_6_8EEE8ENCES NUREG-0700 EPRI-NP-24ti - Human Engineering Guide for Enhancing Nuclear Control
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- Human Engineering Guide to Etuipment Design, Van Cott -- Kincade - 1972 f - Fluman Factors in Engineering and Design -
McCormick - 1976 l Engineering Pracedure, ENG-2 l 4 l t i
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