ML20207H960

SPDS Human Factors Program Summary Package,Catawba Nuclear Station

ML20207H960
Person / Time
Site:	Catawba
Issue date:	04/23/1986
From:	White R DUKE POWER CO.
To:
Shared Package
ML20207H868	List: ML20207H863 ML20207H890 ML20207H921 ML20207H933 ML20207H950 ML20207H954 ML20207H960 ML20207H965 ML20207H970
References
NUDOCS 8607250146
Download: ML20207H960 (9)

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Attachment 6 SPDS HUMAN FACTORS PROGRAM SUISIARY PACKAGE CATAWBA NUCLEAR STATION Section I: Description of SPDS Human Factors Program Section II: Summary of Results Section III: Listing of Applicable Correspondence Roland H. White Control Complex Engineering Design Engineering Department l

l April 23, 1986 Page 1 of 9 8607250146 860715 PDR ADOCK 05000414 p PDR

Attachment 6 I. Description of SPDS Human Factors Program General The Safety Parameter Display System (SPDS) Human Factors Program was developed to ensure that the final SPDS display

system design would provide direct, readily usable informa-2 tion, organized in an effective format to support operator task requirements. The Human Factors Program provided for the review and evaluation of the SPDS displays and operator interface during both the initial concept and development stage of the SPDS system design, and after the implementation of displays on the actual SPDS system hardware.

The activities in the Human Factors Program were performed by members of the Control Room Review Team. These activities were conducted simultaneously with Control Review activities and were coordinated by the Control Room Review Steering Committee. A listing of the members of the Review Team and the Steering Committee, and a description of the Control Room Review and the methodology employed is contained in the Duke Power Company Response to Supplement 1 to NUREG-0737 for Catawba Nuclear Station, Volume 1, Section 3.0.

l The Human Factors Program was conducted in three phases; (1) review and comments during the concept and design stage of the SPDS, (2) a task analysis of the SPDS primary and supporting displays at the conclusion of the concept and design stage of the SPDS, and (3) a human f actors survey of the displays and operator interface after implementation on the actual SPDS hardware in the Control Room.

. Task Analysis The task analysis activity of the SPDS Human Factors Program was conducted using the control board mockup which had been fabricated for use in the task analysis activity of the Control Room Design Review (CRDR). An event scenario was developed using the plant emergency procedures and the Westing-house Emergency Response Guidelines. The scenario provided an

ordered framework of a set of possible responses to an initia-i ting event against which the SPDS system was evaluated.

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1 Attachment 6 From the event scenario, plant parameter inputs to the SPDS logic were identified. Valuec for these parameters were developed consistent with plant conditions for several selected time intervals during the duration of the scenario.

selected time intervals were chosen to be one minute intervals from 10 minutes into the scenario until 30 minutes after initiation.

The SPDS logic output states were determined for each time interval using the specific plant parameter values. Photo-graphic slides were then produced for each time interval to represent how each SPDS and supporting display would appear for that time interval, t A walk-through of the event scenario was performed by a task analysis team consisting of a senior reactor operator and a mechanical / nuclear systems engineer. During the walk-through, the operator performed the task actions required while the engineer served as observer. In addition, several other members of the Control Room Review Team served as observers

, and slide coordinators.

The proper time sequenced slides for the SPDS displays were projected onto the SPDS display CRT mockup to simulate the

action of this display during the scenario. Slides represent-ing the proper display for any of the secondary supporting displays at a particular time interval were projected onto the supporting display CRT mockup in response to operator command, simulating the call-up feature of the supporting display system.

The usability and effectiveness of the displays were evaluated by the task analysis team using a set of pre-selected task l analysis principles. These principles, developed from those used in the CRDR task analysis activity, covered such items as i

logical ordering of displays, terminology and abbreviations, labeling, coding, usability of displayed information, and operator task support. In general, the task analysis activity l evaluated the SPDS and supporting displays to determine if the l displays provided a logical, readily usable format to support l the following operator tasks:

l o Monitor Critical Safety Function Status (CSF) o Observe CSF status changes o Determine which CSF is degraded o Determine the severity of the degradation o Identify component / functional area out-of-tolerance Page 3 of 9 i

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Attachment 6 o Determine which confirming displays and restoration procedures to use o Monitor restoration progress o Monitor remaining CSF status during restoration Human Factors Survey A human factors survey of the actual SPDS and secondary supporting displays as implemented on the control room CRT displays was performed. During the survey the control room CRT displays and the operator keyboard were used to call-up, observe, and review each separate display. In addition, the displays were reviewed during a simulated alarm condition.

The survey evaluated the format and arrangement of the dis-plays and the operator keyboard interface using applicable survey principles from the Control Room Survey Principles checklist which was derived from NUREG-0700 for use in the CRDR. These principles covered areas, such as, color usage, character height, room lighting and glare, presentation of data, labels and coding, operator message presentation, and the arrangement and use of the operator keyboard interface.

II. Summary of Results The results from both the task analysis activity and the human factors survey were documented in the form of recommendations for design changes to the SPDS and secondary supporting displays. These recommendations concerned items such as audible alarming upon a change of CSF status, the addition of CSF status blocks to the bottom of the supporting displays in addition to those on the primary SPDS display, alarm message format, display function button position on the operator keyboard, and double spacing of lists for readability. The human factors recommendations from each review activity were resolved and required changes to the SPDS display system were implemented.

III. Listing of Applicable Correspondence A. McGuire Correspondence Date To From Subject 03-29-82 W A Coley C E Muse Control Room Review C P Rogers SPDS Development -

Input Review Page 4 of 9

Attachment 6 Date To From Subject 03-29-82 W A Coley C A Little Control Room Review J O Crow SPDS Pilot Program Dev.

03-30-82 W A Coley C A Little Control Room Review SPDS Development 04-02-82 T C McMeekin W A Coley Announcing Meeting on R S Darke 4/7/82 to discuss CRT H R Lowery Display R B Travis J W Hampton L E Schmid N A Rutherford W H Rasin R E Hall C A Little J O Crow M B Laney C P Rogers G A Copp 05-21-82 Memo to Control W A Coley NRC Staff Review of Rm Rev Steer SPDS Designs Comm 06-03-82 Memo For File C A Little SPDS Responsibility 06-07-82 T C McMeekin R L Brown Comments on SPDS H R Lowery G D Gilbert J W Hampton B C Moore R E Hall N A Rutherford W A Coley W H Rasin C A Little H L Davenport 06-22-82 Memo For File L T Harbinson Meeting items 10-13-82 Memo For File R L Brown SPDS supporting displays 1

! 10-18-82 M R Crews R L Brown Control Room Review l Steering Committee l SPDS Status 1

11-04-82 R L Brown M R Crews SPDS Secondary Display Page 5 of 9

l Attachment 6 Date To From Subject 11-05-82 R L Brown L Firebaugh Supporting Displays 11-05-82 P M Abraham K S Canady Control Room Review ERG /EOP/ Task Analysis inLLriaan 11-30-82 C A Little R L Brown Review of comments from 10-13-82 letter 12-01-82 R L Brown L J Cope Supporting Displays 12-08-82 Memo For File R L Brown Meeting on Supporting Displays 01-06-83 R L Brown L T Harbinson Revised SPDS logic C P Rogers diagrams 02-04-83 Memo To File L T Harbinson Supporting Display 02-14-83 P H Barton M R Crews Integrating of SPDS

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B C Moore w/ operator roles and functions 02-16-83 R L Brown L T Harbinson Control Room Review C P Rogers Team comments on logic diagrams 02-16-83 T C McMeekin L T Harbinson SPDS Evaluation R L Brown H L Davenport 03-17-83 M R Crews R L Brown Supporting Displays G M Haynes G D Gilbert B Ferguson D Robinson H L Davenport L R Frick R C Collins C P Rogers L Firebaugh C A Little 03-23-83 R L Brown G Swindlehurst Review of SPDS Logic and Displays l

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l Attachment 6 Date To From Subject 04-06-83 R L Brown M R Crews Integrating SPDS with H R Lowery Operator Roles and L Firebaugh Functions J W Hampton B C Moore R C IIsil N A Rutherford R S Darke W H Rasin C A Little T C McMeekin 05-02-83 R L Brown L Firebaugh McGuire Comments on SPDS Review by Reactor Safety

, 05-03-83 R L Brown C P Rogers MNS/CNS Review of I SPDS Logic and Displays 05-12-83 G W Hallman R L Brown Shift Technical C A Little Advisor's Panel 05-23-83 Memo To File R L 3rown Resolution of Reactor Safety Unit Comments 06-28-83 R L Brown L T Harbinson Prompt Event Alarms 09-12-83 R L Brown L T Harbinson Comments on Rev. II of SPDS Logic 10-04-83 G E Vaughn R L Brown Shift Technical i Advisor's CRT Panels 10-07-83 R L Brown G Swindlehurst Review of SPDS Logic W A Hallman and Displays C P Rogers 10-21-83 File C P Rogers Paper on Resolution of Comments to McG SPDS from Reactor Safety 10-24-83 G E Vaughn B C Moore Shift Technical Advisor's CRT Panels 10-24-83 R L Brown L T Harbinson SPDS/ Supporting Displays Review Page 7 of 9

Attachment 6 Date To From Subject 10-25-83 Memo To File L T Harbinson SPDS Evaluation 10-26-83 T C McMeekin L T Harbinson SPDS Evaluation R L Brown 11-04-83 R L Brown G E Vaughn Shift Technical Advisor's CRT Panels 11-11-83 M D McIntosh R L Brown System description G D Gilbert for SPDS H B Tucker C A Little G B Swindlehurst R M Koehler S Frye L Duncan 11-17-83 R M Koehler R L Brown SPDS Training Slides S Frye M D McIntosh G Gilbert 12-02-83 T C McMeekin M R Crews SPDS Evaluation R L Brown 12-06-83 H B Tucker R L Brown Shift Tech. Advisor C A Little CRT Locations B C Moore 12-22-83 Memo To File R H White Control Room Review Team Evaluation of SPDS Operator Displays 01-11-84 T C McMeekin R L Brown Human Factors Review M R Crews 02-07-84 R L Brown M R Crews Human Factors Review 02-14-84 R L Brown R G Morgan Shift Technical Advisor CRT Locations 02-15-84 G W Hallman R L Brown Shift Technical C A Little Advisor Panels T C McMeekin H L Davenport M R Crews 02-15-84 M R Crews R L Brown McGuire ideas for CRT Page 8 of 9

Attachment 6 Date To From Subject 02-15-84 K S Canady R L Brown Supporting Displays G B Swindlehurst 03-13-84 Memo For File R L Brown Supporting Displays 03-14-84 P H Barton A L Kinley STA Station and R G Morgan Control Room Layout 07-30-84 R L Brown C J Wylie Results of Human C B McFadden Factors Survey of CNS L R Frick SPDS 08-06-84 G W Hallman R L Brown Revisions to SPDS per C A Little Human Factors Review K S Canady G B Swindlehurst B. Catawba Correspondence Date To From Subject

! 04-01-82 W A Coley J W Hampton Control Room Review SPDS Development 02-18-83 P H Barton J W Hampton Integrating SPDS with B C Moore operator roles &

functions

'i 03-30-83 M R Crews B C Moore Integration of SPDS Operator Roles 02-14-84 R L Brown R G Morgan Shift Technical Advisor CRT Locations 06-15-84 L R Frick S C Mattix Programming Revision Request 06-15-84 R L Brown S C Mattix Human Factors Survey 07-30-84 R L Brown C J Wylie Summary of Human Factors i'

C B McFadden Recommendations for CNS L R Frick SPDS i

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