ML19347C319
| ML19347C319 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 09/24/1980 |
| From: | Kintner L Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8010170310 | |
| Download: ML19347C319 (9) | |
Text
_. __
- 3 UNITED STATES
[
g NUCLEAR REGULATORY COMMISSION y
E WASHINGTON, D. C. 20555 e
,s...../
Docket No. 50-364 SEP 241980 APPLICANT: Alabama Power Company FACILITY:
Joseph M. Farley Nuclear Plant, Unit No. 2
SUBJECT:
SUMMARY
OF JULY 15, 1980 MEETING REGARDING REVIEW 0F OPERATING LICENSE APPLICATION The staff in Human Factors Engineering Branch met with applicant in Bethesda, Md.,
to discuss staff's tentative conclusions on improvements to the control room design. A list of attendees is enclosed. is a draft surmiary of the results of a four day review and audit of the Farley Unit 2 control room by the staff and its consultant, Mr. Harold E.
Price, Biotechnology. Applicant and staff agreed on a schedule for making the modifications indicated in Enclosure 2.
All modifications are to be completed prior to exceeding 5% power except that for Item J of Category 1; out-of.
tolerance ranges will be marked on only those meters required for emergency operating procedures.
The remainder of the meters will be marked for out-of-tolerance ranges at the first refueling outage.
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L. L. Kintner, Project Manager Licensing Branch #2 Division of Licensing Enclosures :
1.
List of Attendees 2.
Draft Summary cc w/ encl:
See next page l
8010170 3 i o Q
l l
Mr. F. L. Clayton, Jr., Senior Vice President Alabama Power Company Post Office Box 2641 Birmingham, Alabama 35291 cc: Mr. Alan R. Barton Executive Vice President Alabama Power Company Post Office Box 2641 l
Birmingham, Alabama 35291 Mr. Ruble A. Thomas Vice President Southern Company Services, Inc.
l Post Office Box 2625 l
Birmingham, Alabama 35202 Mr. George F. Trowbridge Shaw, Pittman, Potts and Trowbridge l
1800 N Street, N. W.
Washington, D. C.
20036 Mr. W. Bradford NRC Resident Inspector P. O. Box 1814 Dothan, Alabama 36302 I
l
ENCLOSURE 1 LIST OF ATTENDEES MEETING WITH ALABAMA POWER COMPANY JULY 15, 1980 Nuclear Regulatory Commission L. L. Kintner J. P. Joyce W. N. Thompson R. G. Ramirez H. E. Price D. Scaletti Southern Company Services, Inc.
T. M. Milton B. J. George Alabama Power Company
~
B. D. McKinney, Jr.
O. D. Kingsley Bechtel H. G. Huff i
Wes tinghouse J. M. Geets
ENCLOStJRE '2
]
n Human Factors Engineering Control Room Design Review - Joseph M. Farley Nuclear Plant Unit 2 The NRC staff conducted a four-day summary human engineering evaluation of the control room of the Alabama Power's Joseph M. Farley Nuclear Plant, Unit 2 during the week of June 16-20, 1980.
During this period the staff was accom-panied by its human factors consultant, Mr. Harold E. Price of Biotechnology, Inc.
The evaluation focused on the following.
Control and display design and location l
Work station layout, including visibility and reach Control room environment, specifically noise and illumination Design and content of emergency procedures i
The evaluation was summary in nature. As a result, human engineering discrepancies and conclusions described in the following sections should be considered as tentative, pending further evaluation, and analysis.
2.0 General Concerns A number of human enginearing design discrepancies were revealed during the evaluation.
Each of these discrepancies has been analyzed and assigned a l
subjective Risk Assessment Weight based on the likelihood that the discrepancy will precipitate or contribute to operator error during critical activities.
This assessment is based on the opinions and experience of the staff and its consultant performing the evaluation.
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- 2.1' Risk Categories
. Category 1 - High risk of operator error FAIN -
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Category 2 - Moderate risk of operator error Category 3 - Some risk of operator error Cau. gory 4 - impacts safety' of operating staff l
2.2 Design Discrepancies l
l Each of the design discrepancies identified during the present evaluation has been analyzed and assigned to the appropriate Risk Category.
2.2.1 Category 1 Discrepancies I
a.
Control room noise.
Noise measurements taken at 3 locations throughout i
the control room ranged from a low of 66 dB(A) to a high of 76.5dB(A).
b.
Annunciator prioritization.
With the exception of the first out, I
l annunciators lack prioritization by color.
j c.
Annunciator Alarms. Alarms levels are barely audible above ambient
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noise levels.
I d.
Accidental Actuation.
Switches (GEMCO) near the edge of the console are subject to accidental actuation.
1 e.
Color Coding.
Color of demarcation tape has no significance and the tape is not a permanent installation.
I f.
Operator Aids. All operator aids should be made permanent (i.e.
yellow tape used to flag important meters).
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' Labeling-Components, systems,subsystemsandpanels,hckpanels,and
.g.
some components are mislabeled.
h.
Process Computer. One of two CRT's is inoperable; alarm printer paper feed is not operating properly.
i.
Controllers.
All reverse acting valve controllers should be either 4
i changed, oriented or labeled for consistant open/close or increase /
decrease positions.
No normal or out of tolerance ranges are indicated
- j. Tolerance ranges.
on meters.
k.
Emergency Diesel Generator. There are no provisions for lamp test on diesel generator status lights, also they are poorly illuminated.
Category 2 discrepancies
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Labeling - Steam generator indications are labeled A/B/C, which controls a.
are labeled 1/2/3 (level and flow)
- Steam generator level selector switches used for selecting protec-tion channel or control channel, do not correlate to level instrumentation.
- SGFP turbine' oil temperature (A&B) recorders have Unit 1 labels.
Labeling on the emergency diesel generator panel is not of the same quality as on the main console.
b.
Selector switches on steam generator panel can be placed in a non functional intermediate position.
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c.
Illumination - panel illuminafion levels are often below the minimum acceptable standard-for readiability (30 footcandles).
d..
Scale Indications - the intermediate and'nihjor interval marks are not distinct enough from the basic unit markings.
e.
Color Coding - there are too many colors used for system discrimination (23),theylackdistinction.
- train colors on emergency diesel panel should be red and blue - common bus should be black.
f.
Process Computer - there is no cross indexing of data points addresses or location information.
- glare on CRT interferes.with viewing I
Controls - Governor speed and voltage adjustment controls are reversed g.
j from convention, increase should be to the right.
4 h.
Communication - voice communications with MSA facemask is difficult beyond 6
feet.
4 Category 3 discrepancies a.
Switch color plate for the 4160V and 500KV systems are mixed up.
b.
Communication - Gaitronic system does not provide for a dedicated channel for control room communications.
- No sound powered headsets were in the control room.
l,
4 c.
Phone / headsets - were not available at back panels for communication to i
the main control room area.
i d.
Legend Status Lights are not always well grouped are moderately difficult to read and.have faded colors.
Color Coding - there is an inconsistant use of colors throughout the control e.
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room.
f.
Illuminated Displays have intensities which often conflict with their importance and are sometimes difficult to read.
g.
Lamp Test - lacking on gemco switches.
4 I
h.
Rear Cabinets - B0P cabinets are older stock manufacturers components (GE J-handles) and standardization and convention is not maintained at the same level as the main console.
i.
Labels - turbine oil controller and bearing oil meter have different labels for same function.
j.
Control / Display - the position of the rod banks in the selector switch does not correspond to the band location on the rod position indicator.
. Switches for the bypass permissives control operate in a top to bottom sequence, however, the operation should be bottom to top.
P-6, P-7, P-8 should be included on the switch table.
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, Category 4 Annunciators, bulb change subjects the CR0 to a shock hazzard.
a.
i Summary
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In general, the human engineering qualities of the Farley 1 control room were satisfacotry,.with the exception of'those discrepancies noted in the previous section.
Listed below are some of the exemplary features of the Farley Unit 2 control room:
Controls and displays are functionally grouped, and generally well integrated.
First-out annunciators provide information to assist operators in rapid diagnosis.
Audio alarms or annunciators provide directional cues.
The mimic on the emergency diesel panel reduces probability of operator error during emergency operations.
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