ML20093F349

Procedure for Performing Task Analysis & Verification for Detailed Control Room Design Review

ML20093F349
Person / Time
Site:	Wolf Creek, Callaway, 05000000
Issue date:	10/31/1984
From:	STANDARDIZED NUCLEAR UNIT POWER PLANT SYSTEM
To:
Shared Package
ML20093F322	List: ML20093F319 ML20093F349
References
PROC-841031, TAC-57369, NUDOCS 8410150061
Download: ML20093F349 (28)

Text

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PROCEDURE FOR PERFORMING TASK ANALYSIS (AND VERIFICATION) FOR THE SNUPPS DETAILED CONTROL ROOM DESIGN REVIEW OCTOBER 1984 i

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TABLE OF CONTENTS PAGE 1.0-INTRODUCTION 1

2.0 PROCEDURE 2

3.0 INPUT DOCUMENTATION 8

APPENDICES A.

FORMS

- 8.

VERB LIST

' C.

SYSTEM ABBREVIATIONS D.

EXAMPLE e

s i

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l.0 INTRODUCTION The-purpose of the Task Analysis is.to identify 1 action and information requirements necessary to perform selected tasks.

The SNUPPS Task Analysis is based on a subset.of the West-inghouse Owners Group (WOG) Emergency Response Guidelines (ERGS), Revision 1 for the identification of operator tasks.

The review team assembled to carry out the _ task analysis

. ill_ consist of utility engineering and operations personnel, w

members of the SNUPPS Staff, and the human factors consultant.

Action and information requirements are developed independent of

_ existing control room instrumentation. These requirements are then compared against control room components and hardware to verify.that required control and instrumentation are available

~and compatable with operator needs.

Any detected inconsistencies will be treated as findings and handled in a fashion similar to that described in the SNUPPS Summary Report. Findings, resolutions and an implementation schedule will be reported to the NRC in a closing report, scheduled for submittal in April 1985.

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2.0 PROCEDURE 2.1 General Instructions The task analysis procedure is a descriptive process which extracts generic operator action and information requirements from systems function data (as represented by the WOG ERGS), converts these requirements to a plant-specific level, and documents the results in an auditable, tabular format for use as an input into the verification process, paragraph 2.2.5.

These procedures are organized into six major activ-ities which are:

1.

Develop a list of tasks from the WOG ERGS.

2.

Generate a list of generic actions and information requirements for each task, organized by task for ERG's E-0, E-1, E-2, E-3, ECA-0.0, and all the

' Function Restoration Guidelines (FRGs).

3.

Convert the generic list to a plant-specific list.

4.

Reorganize the listing so that all action requirements of a given type and all information requirements of a given type are collected together.

Type refers to a group of action or information requirements which all have the same system, plant component, and parameter (see detailed procedures, paragraph 2.2).

5.

Summarize each action type and each information type in list form.

6.

Compare the summary requirements to the existing con-trol room design.

2.2 Detailed Procedures 2.2.1 Collect Materials Obtain a copy of the WOG ERGS, Revision 1 and the four-volume set of related background documents.

2.2.2 Complete Action-Information Requirements Details ( AIRD)

Forms 2.2.2.1 General - Fill out one AIRD form for each step identified from the ERGS as detailed below.

Caution and note statements will be included as apprcpriate.

Implied tasks, such as to visually verify that a required action has taken place, will also be included as appro-pri ate.

Certain information, particularly plant-specific, technical specification defined l-2

operating values, will not be available during this step.

This information will be obtained when converting the generic AIRD forms to a plant-specific application. Fill in the appro-priate information on the AIRD forms sequentially, starting with the top area of the form first and completing the tabular information last.

Number all AIRD forms sequentially. The following paragraphs explain each blank of the form.

2.2.2.2 Originator - Originator to enter his nane and today's date.

2.2.2.3 Reviewer - Reviewer to enter his nane and today's date.

The human factors consultant wil either be the Originator or Reviewer.

2.2.2.4 ERG Number - Enter the ERG number currently being analyzed.

2.2.2.5 Step Number and Objective - Enter the ERG step number and objective for the step currently being analyzed.

Caution and note statements are considered as a separate step and should be numbered C# or N#, respectively, where # repre-sents the next step nunber to be encountered.

2.2.2.6 Behavioral Elements - There is at least one task required for every step listed in the ERG's. The tasks are divided into two categories:

1.

" Action /

Expected Response," and 2.

" Response Not Obtained".

The AIRD BEHAVIORAL ELEMENTS table separates these two categories of tasks by a horizontal dotted line, to be entered by the Originator.

Based upon the ERGS and their related background information, identify all behavioral elements for each task and list each element in the AIRD BEHAV-IORAL ELEMENTS table. A behavioral element is defined by the various behavioral and physical properties of an action requirement or an informa-tion requirement. Each of the column entries are explained in detail below. Continue making addi-tional behavioral element entries until all elements for a task are listed, then proceed to the next task. Column entries for each element are:

1) Action.

Number each substep as it appears with-in the ERG.

Some substeps constitute a single task, other substeps are made up of more than one task.

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2). Verb.

Enter a verb from the verb list (in Appendix B) which best describes the required operator activity.

This verb will either describe an action that must be performed or a method for acquiring information. Note that at this level of behavioral definition, a require-ment for in operator to direct someone else to perform an action is considered an action element.

You may note in the comments column that operator directs someone to perform this action; however, maintain a strict compliance to the verb list for this column at this stage in the analysis.

3) System.

Enter the abbreviation for the SNUPPS plant system for.this element.

System abbrevia-tions are listed in Appendix C.

4) Component / Equipment Number.

Enter the plant compon-ent name for this element if applicable.

If there is no identifiable component, enter NA. Do not enter any device, instrurrent, or control nme.

Enter the compnent's associated equipment number.

5)

Parameter.

Enter the parameter name for this element.

This will usually be a condition or characteristic of the system and/or component such as temperature, pressure, flow, level, amps, volts, watts, etc.

6)

Direction.

Enter the " condition" of the parameter which may include one of the following:

1. Increasing

3. Greater Than (or Equal to)

2. Decreasing

4. Less Than (or Equal to)

7) State or Value. Enter any identifiable state or value for the parameter.

States may include:

1. Stable

5. Off

2. Open

6. Running

3. Closed

7. Stopped

4. On Values may include either a discrete numeric value or a range of numeric values.

8) Units / Rate. Enter the units and/or rate for the parameter's state /value.

Units will be defined by terms such as lbs, psig, in, degrees F, etc.

Rate will be units per some time unit (e.g., pounds /sec).

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n 9)

Precision.

Enter the precision at which the infor-mation must be presented or the action must be taken. This will usually be a plus or minus value and unit.

In general, the first attempt at deter-mining precision should utilize the following formul a:

P = 0.2A Where P = Precision, and A = Instrument Channel Inaccuracy This formula is based on the conservative assumption that. precision should be selected such that it will contribute to 2% or less of the total inaccuracy.

10) Trending Required? Enter Y or N for "yes" or "no."

Generally, if the verb used for this element is

" monitor," trending would be required. Also, for information verbs other than monitor which have response times in excess of one or two minutes and changes in rates, trending may be required.

If in doubt, enter Y with a question mark (?) as a flag.

11) Comments. Enter any clarifying information or questions, including operating characteristics required by the ERG.

This column is also used to cross reference other systems / components (e.g.

SG level affected by Aux. Feedwater flow), indi-cate implicit verify's and explain exceptions to accepted rules from this procedure.

12) On AIRS Sh. No.

Leave this column blank.

It will be completed under paragraph 2.2.4.2.

13) Repeat 1) through 12) for eacn behavioral element for each task.

2.2.3 Develop Plant-Specific AIRD Forms

- Working with designated plant personnel, review all AIRD forms and modify them to accurately reflect the plant-specific parameters, values, ranges, units, rates, or other differences from the generic. Enter a brief, concise explanation for all identified plant-specific differences.

2.2.4 Complete Action-Information Requirements Summary ( AIRS) Forms 2.2.4.1 General. AIRS forms are used to collect together all behavioral elements of a given type, independert of what-ERG, ERG steps, or task they may appear in (i.e. this forms the basis for an instrument and con-trol specification).

Behavioral element types that are the same are defined as having the following characteristics:

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1) Their verbs agree as to class, e.g., they are either action verbs or information verbs (their verbs may be different within verb class.).

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2) Their system, component, and paraneter are all the s ame.

3) All other distinguishing features may be different.

2.2.4.2 Transcribe Behavioral Elements onto AIRS Forms -

Begin transcribing the detailed information for the first behavioral element from the AIRD form to the AIRS form in the following manner:

1) Enter your name and today's date. Number this sheet as one, and all subsequent AIRS forms sequenti ally. From the first AIRD sheet, enter onto the AIRS form in the INDIVIDUAL DETAILS table all the available information concerning the first behavioral element on the AIRD. At this time, determine the requirements type from the element verb (on the AIRD) and enter that in the S0RT BLOCK of the AIRS form. Also transcribe (from the AIRD) the system, component, and parameter onto the AIRS S0RT BLOCK. Leave the SuiMARY OF REQUIREMENTS BLOCK and VERIFICATION

SUMMARY

BLOCK blank at this time. When you have completed the first behavioral element, transcribe the AIRS sheet number into the last column (On AIRS Sh. No.) of the AIRD form in line with that task.

2) Searching sequentially through the AIRD stacks, find the next behavioral element that is of the same type as the element that you just completed.

It is the same type if it has the same requirements type (defined by the element verb class) and the same system, component, and parameter. Enter all available information for this element into the INDIVIDUAL DETAILS table of the AIRS form. Trans-cribe the AIRS sheet number into the last column of that AIRD form in line with that task.

3) Repeat the previous step until you have searched through all AIRD forms, then set that AIRS form aside.

4) Obtain a blank AIRS form and number it as the next sheet in the AIRS stack. Repeat steps 1) through

3) for the next type of task. When all tasks on the AIRD forms have AIRS sheet numbers in the last column of the table, transcribing the elements onto the AIRS forms is complete.

File all AIRD forms.

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2.2.4.3 Summarize Behavioral Elements - For each AIRS form, summarize the behavioral element column entries for Value/ Range, Units / Rate, Precision, and Trend-ing Required.

Enter these summaries in the appro-priate places in the AIRS Sth! MARY OF REQUIREMENTS BLOCK. Also, complete the Response Time entry with appropriate system or component response times, e.g. time required for a valve to close. When all AIRS forms have this block completed, this step is complete.

There should be no entries for the VERIFICATION

SUMMARY

BLOCK on the AIRS form.

2.2.5 Cross Check for Completeness Upon completion of the AIRS forms, the inventory of parameters to be observed and/or controlled will be compared to the inventory of instrumentation and controls developed by Westing-house in its SRTA (System Review and Task Analysis) of the basic version of the ERGS. This identified inventory difference will be cross compared at the task level, utilizing the task inter-changeability data supplied in the SRTA, to Revision 1 of the ERGS. _ As a result of this comparison, a supplemental analyses will be performed for (1) each plant parameter not already analyzed, (2) each type of task not already analyzed, and (3) each parameter value not enveloped by values already included in

'the analyses. These supplemental analyses will be performed utilizing the AIRD form for the ERGS not previously analyzed.

The results will then be transferred to the AIRS forms.

2.2.6 Verify Results Utilizing plant specific documentation, control room simulator, etc., complete the Verification Summary block on each AIRS form by indicating the existing control room instrument or control identification number for that instrument which fulfills the action-information requirements listed.

In some cases, more than one instrument will be used to satisfy a set of require-ments (e.g. wide and narrow range pressure indicators). Enter the control board panel number to indicate the location for that instrument. Check the " Pass" column if existing instrumentation fulfills the action-information requirements or the " Fail" column if it does not.

In the case of " Fail", a Human Engineer-ing Finding (HEF) should be generated for future review by the DCRDR Review Team.

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e 3.0 INPUT DOCUMENTATION

1) Westinghouse Owners Group Emergency Response Guidelines and Background Docunentation, Revision 1.

2) SNUPPS Abbreviation List.

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3) System Piping and Instrument Diagrams.

4) Final ~ Safety Analysis Report.

5)_ Westinghouse Owners Group System Review and Task Analysis Document ation.

6)- Other plant-specific documentation, as appropriate.

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APPENDIX A.

FORMS

ACTION INFORMATION REQUIREMENTS DETAILS (AIRD)

Sheet cf WOLF CREEK,SNUPPS UNIT:

ORIGINATOR:

DATE:

PLANT:

REVIEWER:

DATE:

2 ERG NO:

STEP NO:

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. STEP OBJECTIVE:

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REMARKS:

j BEHAVIORAL ELEMENTS

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8 componerte Parameter Direction f

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Comments g

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ACTION INFORMATION REQUIR.EMENTS

SUMMARY

(AIRS)

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SUMMARY

OF REQUIREMENTS BLOCK VERIFICATION

SUMMARY

BLOCK REQS TYPE: Act Info VALUElRANGE!

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!-, SYSTEM :

UNITS-PASS Fall 1.D. No

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PANEL COMPONENT:

PRECISION:

PARAMETER:

RESPONSE TIME:

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e APPENDIX B.

VERB LIST i

O SYSTEM FLNCTION APO TASK ANALYSIS APPENDIX B BEHAVIORAL ELEMENkVEkB L'ST;;;

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I Verb Application Definition Observe IIIrdedheq.

To attend visually S.tS$i proi.ince, of or the status of an object, liidicatlan,lgt event.

Read Infdjil Reg.;;

To examine visually inforisistion.;; hic 5i:is

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presented symbolically.

Monitor Info. Req.

%. visually ke'ep track of ar'il object, i

, Indication, or event over time.

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Scan Info. Req.

.:Tb quidkly examine an information source to lishtalii'a general impression.

Deteclii Info. Req.

T5"be;;iikare d(t.be presence or absence of a visual!)timulus.

Start

! Cont. Req.

To manus 51y of.lisertElly initiate a simple or complex functica, eventiler activity.

l Stop ConiglNeq.

To manually or "Ef6all[terrninete a simple or complex function, si.ent.of'setivity.

Open bont9INM."

complex function, event, or;illiictiv4f wb.ich

~"'

To manually or verballyI4ElthG"a siinple or ultimately results in a plarit compn,ent"or jiplant components (e.g.,

valver,i" breaker, ijdamper, etc.) to assume en open state.

Close Cont. Req.

To manually or verbally initiate a simple or comple.x:: Junction, event, or activity which o

ultimiitE!ylltesults in a plant component or plariti.i' coni [ionents (e.g.,

valve, breaker, danger,.et6.')..to.; assume a closed state.

Adjust Cont. Req.

To manualf[or vdS6 ally initiate a simple or complex f[inctionji!!' v.ent

• or activity which e

ultimately %sultfinilisilplant component or l

componenta illig,,,sili plant condition, l

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l status, or dynamiciito cheFige.M' ate.

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0 APPENDIX C.

SYSTEM ABBREVIATIONS i

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SYSTEM NAME AB MAIN STEAM SUPPLY SYSTEM.

AC MAIN TURBINE SYSTEM.

AD CONDENSATE SYSTEM.

AE FEEDWATER SYSTEM.

AF FEEDWATER HEATER EXTRACTION, DRAINS AND VENTS SYS.

AK CONDENSATE DEMINERALIZER SYSTEM.

AL AUXILIARY FEEDWATER SYSTEM.

AN DEMINERALIZED WATER STORAGE AND TRANSFER SYSTEM.

AP CONDENSATE STORAGE AND TRANSFER SYSTEM.

AG CONDENSATE AND FEEDWATER CHEMICAL ADDITION SYSTEM.

BB REACTOR COOLANT SYSTEM.

BG' CHEHlCAL AND VOLUME CONTROL SYSTEM.

BL REAC10R MAKEUP WATER SYSTEM.

BM STEAM GENERATOR BLOWDOWN SYSTEM.

BN BORATED REFUELING WATER STORAGE SYSTEM.

CA STEAM SEAL SYSTEM.

CB MAIN TURBINE LUBE OIL SYSTEM.

CC GENERATOR HYDROGEN AND CARBON DIDXIDE SYSTEM.

CD GENERATOR SEAL DIL SYSTEM.

CE SIATUR COOLING WATER SYSTEM.

CF LUBE DIL STORAGErTRANSFER AND PURIFICATION SYSTEM.

CG CONDENSER AIR REMOVAL SYSTEM.

CH MAIN TURBINE CONTROL OIL SYSTEM.

CN DA CIRCULATING WATER SYSTEM.

EA SERVICE WATER SYSTEM.

EB CLOSED COOLING WATER SYSTEM.

EC FUEL POOL COOLING AND CLEAN-UP SYSTEM.

EF ESSEN11AL SERVICE WATER SYSTEM.

EG COMPONENT COOLING WATER SYSTEM.

EJ RESIDUAL HEAT REMOVAL SYSTEM.

EM HIGH PRESSURE COOLANT INJECTION SYSTEM.

EN CONTAINMENT SPRAY SYSTEM.

EP ACCUMULATOR SAFETY INJECTION SYSTEM.

FA AUXILIARY STEAM GENERATOR SYSTEM.

FB AUXILIAR'Y SIEAM SYS1EM.

FC AUXILLARY TURBINES.

FE AUXILIARY STEAM CHEMICAL ADDITION SYSTEM.

FS GA PLANT HEATING SYSTEM.

GB CENTRAL CHILLED WATER SYSTEM.

GD ESW PUMP HOUSE BLDG HVAC.

GE TURBINE BUILDING HVAC.

GF' MISCELLANEOUS BLDG HVAC.

GG FUEL BUILDING HVAC.

GH RADWASTE BUILDING HVAC SYSTEM.

GK CONTROL BUILDING HVAC.

GL AUXILIARY BUILDING HVAC.

GM DIESEL GENERATOR BUILDING VENTILATION.

GN CONTAINMENT COOLING.

GP CONTAINMENT INTEGRATED LEAK RATE TESTING SYSTEM.

GR CONTAINMENT A1HOSPHERE CONTROL SYSTEM.

US CUN1AINMEN1 HYDROGEN CONTROL SYSTEM.

GT.

CONTAINMEN1 PURGE.

HA ~

GASEOUS RADWASTE SYSTEM.

HB LIQUID RADWASTE SYSTEM.

HC SOLID RADWASTE SYSTEM.

HD DECONTAMINATION SYSTEM.

~lHE BORON RECYCLE SYSTEM.

HF SECONDARY LIQUID WASTE SYSTEM.

JE EMERGENCY FUEL OIL SYSTEM.

KA COMPRESSED AIR SYSTEM.-

KC FIRE PROTECTION SYSTEM.

KD DOMESTIC WATER SYSTEM.

KE FUEL STORAGE, FUEL HANDLING & REACTOR SERV. SYSTEM.

KF CRANES, HOISTS, AND ELEVATORS.

KH SERVICE GAS SYSTEM.

KJ STANDBY DIESEL ENGINE SYSTEM.

KS BULK CHEMICAL STORAGE AND HANDLING SYGTEM.

LA SANITARY DRAINAGE SYS1EM.

LB ROOF DRAINS SYSTEM.

LD CHEMICAL AND DETERGENT WASTE SYSTEM.

LE OILY WASTE SYSTEM.

LF FLOUR AND EQUIPMENT DRAINS SYSTEM.

MA MAIN GENERATION SYSTEM.

MB EXCITATION & VOLIAGE REGULATION SYSTEM.

MR STARTUP TRANSFORMER SYSTEM.

NB LOWER MEDIUM VOLTAGE SYSTEM.

NE STANDBY GENERATOR GYSTEM.

NF LOAD SHEDDING AND EMERGENCY LOAD SEQUENCING.

NG LOW VOLTAGE (480V1 SYSTEM.

NK 125-VOLT DC SYSTEM.

NN INSTRUMENT AC POWER SYSTEM 120 V.

PA HIGHER MEDIUM VOLTAGE SYGTEM-13.ONV.

PB LOWER MEDIUM VOLTAGE (4.16KV) SYGTEM.

PG LOW VOLTAGE SYS'IEM.

PJ 250V DC SYSTEM.

PK 125 V DC SYSTEM.

PN INSTRUMENT AC POWER SYSTEM.

PQ UNINTERRUPTIBLE AC POWER SYSTEM.

GA NORMAL LIGHTING SYSTEM.

OB STANDBY LIGHIING SYSTEM.

OD EMERGENCY LIGHTING SYSTEM.

OE TELEPHONE SYSTEM.

OF PUBLIC ADDRESS SYSTEM.

QG GROUNDING SYSTEM.

DJ FREEZE PROTECTION SYSTEM.

ON MISCELLANEOUS EQUIPMENT SYGTEM.

RD METEOROLOGICAL INSTRUMENTATION GYGTEM.

RJ BALANCE OF PLANT COMPUTER GYSTEM.

RK PLANT ANNUNCIATOR SYSTEM.

RL HAIN CONTROL DOARD SYSTEM.

RM PROCESS LIQUID GAMPLING GYSTEM.

RP MISCELLANEOUS CONTROL PANELG.

RR SAFETY ASSESSMENT SYSTEM.

SA BOP ENGINEERED SAFETY FEATUREG ACTUATION GYGTEM.

SB NSSS ESF ACTUATION AND REACTOR PROTECTION SYSTEM.

SC REACTOR INSTRUMENTATION SYSTEM.

SD AREA RADIATION MONITORING GYSTEM.

SE EX-CORE NEUTRON MONIr0 RING SYGTEM.

SF REACIOR CONTROL SYSTEM.

SG SEISHIC INSTRUMENTATION SYSTEM.

SJ NUCLEAR SAMPLING & POST ACCIDENT SAMPLING GYGTEM.

SK POWER BLOCK SECURITY SYSTEM.

SP PROCESS AND EFFLUENT RADIATION MONITORING GYSTEM.

SO LOOSE PARTS MONITORING SYSTEM.

SR IN-CORE NEUIRON MON 1TORING GYSTEM.

ST EMERGENCY RESPONSE FACILITY INFORMATION SYSTEM.

SZ RADIDACTIVITY RELEASE INFORMATION SYSTEM.

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.3 APPENDIX D.

EXAMPLE l

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