ML20003H324
| ML20003H324 | |
| Person / Time | |
|---|---|
| Site: | Zimmer |
| Issue date: | 05/01/1981 |
| From: | CINCINNATI GAS & ELECTRIC CO. |
| To: | |
| References | |
| TASK-1.D.1, TASK-TM NUDOCS 8105050571 | |
| Download: ML20003H324 (175) | |
Text
{{#Wiki_filter:. RESPONSE TO THE NRC'S HUMAN FACTORS ENGINEERING CONTROL ROOM DESIGN REVIEW / AUDIT REPORT WM. H. IIMMER NUCLEAR POWER STATION t i I i : i i i i Submitted by: i The Cincinnati Gas 4 Electric Co.
- , . l In. Response To Task Action Plan bl Item I.D.1, Contro?. Room Design Review l i l
B May 1, 1981 l & e,l/ \ q- ="ECEIVto %- ,
%e N
~
x 0.,$"i T y [% tbl , $ 81050505R g e
TABLE OF CONTENTS SECTION PAGE INTRODUCTION . . . . . . . . . . . . . . . . . . . 1 6.1 CONTROL ROOM WORKSPACE . . . . . . . . . . . 4 6.2 WORKSPACE ENVIRONMENT . . . . . . . . . . . 25 6.3 ANNUNCIATORS AND ALARMS . . . . . . . . . . 57 6.4 CONTROLS . . . . . . . . . . . . . . . . . . 80 6.5 VISUAL DISPLAYS . . . . . .. . . . . . . . 100 6.7 CONTROL-DISPLAY INTEGRATION . . . . . . . . 116 6.8 LABELS AND LOCATION AIDS . . . . . . . . . . 133 6.9 PROCESS COMPUTER . . . . . . . . . . . . . . 159 6.10 DATA RECORDING AND RETRIEVAL . . . . . . . . 170 m 4
2 1 4 THE CINCINNATI GAS 5 ELECTRIC CO. RESPONSE TO THE NRC's HUMAN FACTORS ENGINEERING CONTROL ROOM DESIGN REVIEW / AUDIT REPOR1 WM. H. ZIMMER NUCLEAR POWER STATION INTRODUCTION Following the accident at Three Mile Island (TMI) Unit 2, the NRC staff developed the Action Plan, NUREG-0660, to provide a comprehensive and integrated plan to improve safety at power reactors. The requirement that a human factors engineering review be performed on all nuclear power plant control rooms was included in NUREG-0660, NUREG-0694, TMI Related Require-ments for New Operating Licensees, and NUREG-0737, Clarifica- ,! tion of TMI Action Plan Requirements. This human factors engineering review of nuclear plant control rooms is identi-fied as Task Action Plan Item I.D.1. Task Action Plan Item I.D.1 required near term operating plants to perform a preliminary control room assessment to review the i adequacy of human factors engineering considerations and provide j a schedule of implementation to correct significant findings. The Cincinnati Gas 6 Electric Co. performed this -preliminary i control room assessment, and prepared and submitted the document
" Preliminary Assessment - Human Factors Review of the Wm. H.
Zimmer Nuclear Power Station Control Room" to the NRC on February 5, 1981 by letter to R. L. Tedesco from J. D. Flynn. A human factors engineering preliminary design review of the
; Wm. H. Zimmer Nuclear Power Station's control room was perfor-med by the Nuclear Regulatory Commission at the site during the week of February 23-27, 1981. This design review was carried out by a team from the Human Factors Engineering Branch 4
1
Division of Human Factors Safety. A report was prepared on , the basis of the HFEB's review of the Licensee's Preliminary Design Assessment and the human factors engineering prelimin-ary design review performed at the site. The NRC's review team was assisted by human factors consultants from Biotechnology, Inc. (Falls Church, Virginia) and from Lawrence Livermore National Laboratory (University of California, Livermore, Californid). Observed human factor design deficiencies were given a priority rating of one to three, (high, moderate, low) by the NRC, based on the increased potential for operator error. Implementation requirements for the various priority categories is as follows: Category 1 - Implement prior to fuel load. Category 2 - Implement prior to sensible heat. Category 3 - Long term study to be implemented in accordance with NUREG-0737. The NRC review team and representatives from their human factors consultants met with CGSE representatives and their human factors consultants on April 14, 1981 to discuss the previously described report. This response addresses the HFEB's report and the agreements reached during the April 14, 1981 review meeting. The following sections are numbered to conform to the NRC's HFEB Control Room Design Review / Audit Report. Each item is summarized in the format described below: Finding: Category: The NRC's findings based on the review team's observation of the control room design nnd layout's clarification of the finding reached during the April 14, 1981 meeting between the NRC and the Licensee. 2
The category of each item as assigned by the staff, or as redefined during the April 14, 1981 review session based on the evaluation of the potential for operator error. Improvement: The licensee's response to the above finding. s Implementation: The licensee's plan to implement the proposed improvement. This response documents the Licensee's commitments, implemen-tation schedule, and fulfills Task Action Plan Item I.D.1, Control Room Design Review. t
' * * =
l 3
6.1 CONTROL ROOM WORK $ PACE
- 1. Finding: Category: 3 A seated operator has difficulty reading the benchboard displays.
Example: RBM and APRM indicators are difficult to read while seated. Improvement: This is a generic problem. An engineering investigation of this problem will be initiated between the Licensee and the General Electric Company. The results of this engineering study will dictate the advisability and feasibility of a modification to the RBM and APRM indi-Cators. Implementation: Long term study to be implemented in accordance with NUREG-0737. l l 4 I L:
6.1 CONTROL ROOM WORKSPACE
- 2. Finding: Category: 1 Annunciators and status displays are difficult to reach for maintenance.
Opera, tors cannot change bulbs without standing on the benchboard. Improvement: A platfort or ladder device will be provided which will provide safe access to the annunciator panels without interference with the control panels. Implementation: Implement prior to fuel load. I M -- , , . --
6.1 CONTROL ROOM WORKSPACE
- 3. Finding: Category: 3 Annunciator bulbs are difficult to remove without a special " rubber socket" tool, which is sometimes inef-fective and can soften around the bulb.
3 Improvement: Removal of annunicator bulbs by a " Bulb Removal" tool is standard operating procedure. The difficulty of bulb removal will be reduced when maintenance accessibility identified in Item 2, is resolved. An investigation of the softening of the, bulb removal tool will be initiated. The resultssof this investigation will dictate the advisability and feasibility of a modification or replacement of the teol. Implementation: Long term study to be implemented in accordance with NUREG-0737 6
6.1 CONTROL ROOM WORKSPACE
- 4. Finding: Category: 1 Reportedly, there have been some fires associated with short circuits occurring during annunciator bulb replace-ment.
1 Improvement: The short circuits are caused by small " whiskers" protruding from the spot solder connections on the annunciator bulbs. When a deficient bulb is inserted into the socket, the " whisker" is bent or broken causing a short with potential for fire. A QC check of the bulbs, currently in stock, revealed that approximately 2% of the bulbs are deficient. Since the manufacturing process cannot be improved, a 100% check of the bulbs will be conducted each time a shipment is received on site. Implementation: Implement prior to fuel load.
+
4 ( 7
l l i 6 1 CONTROL ROOM WORKSPACE
- 5. Finding: Category: 1 Bulb 1. placement of some Fisher controllers is repotted to throw calibration out of tolerance.
1 Improvement: This incident occurred when a 6 volt bulb was erroneously placed in the Cooling Tower Make-up Flow Controller. This controller, as well as eleven other Fisher KD1101 con-trollers are used on Balance of Plant systems. They require a 28 volt bulb. The six volt bulb changed the circuit resistance, which caused a resistor to burn out
~~
resultin'g'~in controller failure. An investigation, conducted by the plant's engineering staff, revealed that the 6 volt and 28 volt bulbs are similar in shape and size. However, each bulb is uniquely identified. Further investigation showed that the 6 volt bulb is only used in twelve locations in the control room. To prevent this situation from developing again, all six volt bulbs will be removed from the control room and issued from the storeroom only under the direct signature of the Operating Engineer, Assistant Superintendent, or Station's Superintendent. A Significant Operating Event Report (SOER) has been developed. The SOER will be reviewed by all licensed operators in the next Licensed Operator Requal.ification Training Module. The above actions will be completed prior to fuel load. 8
. _ _ _ _ _ _. . . . _ _ _.._ ._...~ _ __-_______ _ __ ___ . . . - . _ . _ . _ _ _ , _ _ _
6.1 CONTROL ROOM WORKSPACE
- 5. Con't.
Since the 6 volt bulbs are only used in 12 locations, a long term engineering study will be initiated to modify the circuit so that it can accept the 28 volt bulb o'r change the bulb socket so that the six volt bulb will be a different size or shape. Implementation: Implement prior to fuel load. t 1 l l I l . l l 9 l 1
6 6.1 CONTROL ROOM WORKSPACE
- 6. Finding: Category: 3 None of the annunicator panel windows are angled forward for better readability. The bezels around each window are angled to prevent glare from ceiling light sources, giving the impression that the window is angled.
Improvement: A human engineering investigation will be initiated to ensure adequate annunciator panel window readability. The results of this study will dictate the advisability
. and feasibility of a modification to the annunciator window angle.
Implementation: Long term study to be implemented in accordance with NUREG-0737. l
. 10
I l 6.1 CONTROL ROOM WORKSPACE l
- 7. Finding: Category: 3 On all annunciator panels, the top two rows of annun-ciator windows are more than 86" above the floor.
Improvement: A human engineering investigation will be initiated to ensure adequate annunciator panel window readability. The results of this study will dictate the advisability and feasibility of a modification to the top two rows of annunciator windows. Implementation: Long term study to be iaplemented in accordance with NUREG-0737 l 1
+ ~~
l I t 11 L
1 6.1 CONTROL ROOM WORKSPACE
- 8. Finding: Category: 3 There are several indicators (in addition to the annun- I ciators) which are more than 7 feet above the floor.
l These are readable by an average male operator, but not by afl of the 5th to 95th percentile work force. Examples: Synchroscope, system status board, radiation monitor panel recorders. Improvement: The main generator synchroscope is 8 inches in diameter and is used only when the main generator is being syn-chronized to the grid. The system status board i.e., the Engineered Safety Feature Status Panel, 1PM12J, is lo-cated so that the view of the panel is not blocked from any point in the Control Room. The panel provides no operational input to the operators and is there for sys-tem status reference during shift turnover and outage situations. The synchroscope and IPM12J are rarely used ! during normal operations and never during emergency sit-l uations. l A human engineering investigation will be initiated to l ensure adequate readability of the radiation monitor panel recorders 1D21-R600 and 1D21-R601 located on Control Room panel 1H13-P600. The results of this study will l dictate the advisability and feasibility of a modifi-cation to the radiation monitor panel recorder location. Implementation: Long term study to be implemented in accordance with NUREG-0737. 12
6.1 CONTROL ROOM WORKSPACE
- 9. Finding: Category: 3 Some of the controls and indicators on PM08 and PM07 are located too close to the floor for easy observaticn or actuation.
Thes$alsomightbeinadvertentlyactuated. Improvement: All labeling on PM07J and PM08J will be changed so that it meets human factors criteria specified in Section 6.8. To minimize activity near the controls, a 2" red border will be placed on the tile floor approximately 3 feet from the panel. Only personnel with specific tasks to perform will be permitted to cross this line. See Sketch 6.1.9. l Implementation: l Implement pt.ior to fuel load.
~~ ~ ~
Improvement: An engineering study will be conducted to identify specific control switch placement problems. Implementation: Long term study to be implemented in accordance with NUREG-0737. j 13 l _ - . _ . -
I l i l IH )3 - P (o O ' in G P G 9 ;.
/ \ 4,3 -
i ( '. % s O L _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ 3 N.# N s ' s s N A'- 1 3 o
=
I 1 I
% l i
I I j l o u I H I I l l I
-r I o I l
{ o
' l
-- sou e ate uNE l 4
8 l l E- _J l l i I /
- tPmo EI IPMo73 l- /
ScAtt : 1 Ma EouALS 6 TEI7 SKETCH (o. l . 9 14 ggg g . g g .3
6.1 CONTROL ROOM WORKSPACE
- 10. Finding: Category: 1 J-handle switches are located close to the apron of the benchboards and are subj ect to accidental actuation by operators leaning against panels.
Example: feedwater controllers on PM03J. Improvement: A " guardrail" is being designed and will be installed on the front apron of horizontal panels with the exception of the P603 panel. Implementation: Implement prior to fuel load. 15
6.1 CONTROL ROOM WORKSPACE
- 11. Finding: Category: 3 Telephones are not consistently color-coded.
Improvement: A consistent color will be used for all non-priority telephones in the control room. Implementation: Implement prior to fuel load.
~-
.m-e m
e e w - M e-am-- Age w -- 4 16
6.1 CONTROL ROOM WORKSPACE
- 12. Finding: Category: 2 Telephones can be easily knocked off their stands by operators standing at the panels.
Impbovement: The phones or their holders will be modified, relo-cated or replaced to ensure that they are not easily knocked off their cradle. Implementation: ~ Implement prior to fuel load. 'l l l l l 4 f i 17
6.1 CONTROL ROOM WORKSPACE
- 13. Finding: Category: 1 Incoming telephone calls to the plant are transferred to the control room at night.
s Improvement: During normal operations routine incoming telephon.e calls to the plant will not ring in the control room area designated "AT THE CONTROLS". See sketch 6.1.13. Routine incoming calls may be transferred to the control room. During emergency situations, incoming calls may be answered at the Communicator's Console, by plant personnel not on duty in the control room, to coordinate emergency actions with offsite agencies. Implementation: Implement prior to fuel load. 18
l SKETCH 6.1.13 REVISIO'i 24 ! APRIL 1977 l
. I l . 1 -
- #l ,y .,,_
_ a. . . . .M , , .. ?..... .-
.$ l T ...---m_-- , " ~. . '3 -I * '
. , ... ' . - NO LIMITATICN AREA l
- - E- ..-]~~ij' .,.f' dpr!'.,*~. '-
~
-[ The operator designated
' ' ' '.y "at the controls" may ,
, [- . - L .L. c -- -
move freely ?. bout this
, g - . i area.
,-h. ^
a =E l sm,s.ms v .. h 1 K r$ LIMITED ACCESS AREA
.c XX X "' *h
~'"*s. K :.7 The operator designated Sw =~
i". e c "at the controls" may E
~ ~
XXX
.- -- 'F
. momentarily enter this
~J l~
- area to acknowledge hX X W
55 XX Y ' l ." -
. s . ,'s receipt of an annun-4y XI
~'
w l- , a-l lA
- : 4 I,$'1' , l ciator alarm, but will not perform any cor-yQ g Xi 71 f:AY, 4 rective operating actio w ti , I! .X .".
X K l
, l r .
11ff's'i "g gX ! # # 2g ., 't I5 1 ^ #g
= Xy I j 4 { '
., ss, '
o , LIMITED ACCESS PASSAGE AREA
-+ - +./,
~
--X --i - -
, ._ The operator designated l n K'_
.' gs g g "at the controls" is
,i t- f,c w
_, authorind passage 0 )( X 8
+g 4
o, through this area to 7/,# y 5 l e l. -
,.k's' s'3 reach a LIMITED ACCESS AREA.
{ i l \l. . , . lI 8 j , n\\' ,2 2 t
/
9 - E . s (3 := 4 tv 4xD l %.
\ --
ri
-s g- -
h1 d RESTRICTED AREA
\' '~
Gg" { -- X Xx The o'serator designated "at ::2e controls" shall X5 ~
"~~
\ .
i not enter this area
"** * ,7 without a croper relief.
g' f ,, . yy4 'Q ich
!. , . - s;! ii - !!! rii;i!!
^x x pt4 9 .
+L C#$X? Y-
'~*
X X, x. x y xX,i th & 1 -
".'XCQ w y. '; t
; ,p[ S ,TX-X-X t5 d *
-Y
~
s.'.i .. 5 c J-l .... ~ r w .o m -. 3:_ g1 _. (..iL ,-
-*1 1_ _ _
WM. M. ZIMMER MUCLEAR POWEN ST ATioM. UMf7 I l
.. ..,et, ..w,... . m .v FIGURE 13.5-1 AT THE CONTROLS 19
6.1 CONTROL ROOM WORKSPACE 14 Finding: Category: 1 There are no procedures for communications control during an emergency. Improvement: Procedures directing notification requirements with off-site agencies during emergency situations is addressed in the Station Emergency Plan. The Emergency Plan Implementing Procedures, which include notification instructions, will be approved prior to fuel load. Implementation: Implement prior to fuel load. N 20
6.1 CONTROL ROOM WORKSPACE 15 . Finding: Category: 3 David Clark H5020 sound-powered phones are available, but are difficult for the operator to use while performing work tasks because they require the oper-atof to use one hand to operate them. The operators report that they also slip off easily. Improvement: Hand-free sound-power telephone headsets are available and will be provided. The hand-free headsets are not as awkward to work with and should correct the problem of headsets slipping off. Implementation: Implement prior to fuel load. m
**= @ " mmew * =w
*6 e
- 6m ,M m.wer WWe m u, .
er e W* e e m m e.- . e ammmmussqu' Me-*N-v 6 M 6 m
- 6N e 6
*MT e 21
I 6.1 CONTROL ROOM WORKSPACE 16 . Finding: Category: 2 There are no paging system loud-speakers at the remote shutdown panels. Improvement: A Thompson PA speaker and handset will be installed at or adjacent to the Remote Shutdown Panels 1PL67JA and 1PL67JB. Implementation: Implement prior to fuel load. 4 22
6.1 CONTROL ROOM WORKSPACE
- 17. Finding: Category: 1 Adequacy of communications while using face mask emergency breathing equipment could not be deter-mined.
Improvement: An engineering investigation of this problem has been initiated between the Licensee and th.e Vendor. The results of the engineering study will determine the method or device required to establish communi:ations while wearing a Scott Air-Pac. Implementation: Implement prior to fuel load. 1 23
6.1 CONTROL ROOM WORKSPACE
- 18. Finding: Category: 2 During an emergency drill, the operator's were not sure who was to use each set of proceduras.
Improvement: A complete set of system operating procedures and emergency operating procedures will be maintained in three (3) locations in the Control Room. The Station Operations Directive, OS. SAD.01, will be revised to provide direction concerning the assign-ment of a set of procedures to a designated shift position. Implementation: 3mplement prior to sensible heat.
* *-~ . . - . _ ,
J 24
r 6.2 WORKPLACE ENVIRONMENT
- 1. Finding: Category: 1 The control room HVAC system is not in its final configuration.
3 Climate control should be checked when complete and normal heat sources are operating. Control room air temperature indicators read 70 to 80 degrees (measured at the exhaust ducts). Temperature appeared comfortable, but the operators said that the control room is often too cold. Improvement: Although the control room HVAC system is basically complete from a structural standpoint, final air - balancing cannot be accomplished until-all- . electrical penetration seals, fire stops, required filters, etc. have been installed. This incomplete status has resulted in some variance in temperature control. When the final design configuration is complete, the control room HVAC system will be rebalanced and re-evaluated to assure the system performs in accordance with established design criteria. 25
6.2 WORKPLACE ENVIRONMENT
- 1. Con't.
This re-evaluation will include noise testing, temperature control and filter system require-ments. The HVAC system pre-operational test will satisfy this requirement. Implementation.: Implement prior to fuel load. l 1 4 26
^
I i 6.2 WORKPLACE ENVIRONMENT
- 2. Finding: Category: 1 Filtering systems, including those needed to satisfy standard HVAC requirements, are not presently installed and dould not be evaluated.
Improvement: Although the control room HVAC system is basically complete from a structural standpoint, final air balancing cannot be accomplished until all electrical penetrative seals, fire stops, required filters, etc. have been installed. This inconplete status has resulted in some variance in temperature control. When the final design configuration is complete, the control room HVAC system will be rebalanced and re-evaluated to assure the system performs in accordance with established design criteria. This re-evaluation sill include noise testing, temperature control and filter system requirements. The HVAC system pre-operational test will satisfy this require-ment. Implementation: Implement prior to fuel load. I 4 27
6.2 WORKPLACE ENVIRONMENT
- 3. Finding: Category: 1 Ambient illumination is well below recommended levels (see Appendix B on the following pages) .
3 Improvement: The normal lighting level will be increased to 30 foot candles for direct lighting. Implementation: Implement prior to fuel load. I I l 4 r 28
Appendix B i
~
CHART 1 LIGHTING SURVIT Incident (footeandles) Normal Normal Normal DC Emers. AC + DC Averste Benchboard Vertical Ave Emera Ave E13-P601 19.6 23.0 - 11 8 1.4 13.0 H13-P601 25.7 30.4 12.5 - - l ! H13-P602 ,22.1 23.0 11.7 - - l H13-P603 '23.8 22.6 12.6 1.8 9.9 PM03J 27.1 27.7 13.3 - - PM02J 21.9 24.1 13.3 - PM02J 25.2 27.7 13.6 2.6 14.4 PM01J 32.2 35.2 14.7 - - l PM07J - - 11.6 - - PM07J - - 12.2 - - PM08J - - 12.1 - -
- - .9.0 0 0 FM08J H13-P655 - - 4.6 .19 2.2 T49-P865 - - 3.8 -
.19 2.2 Near T49-P865 14.0 - - .71 8.3 PM18J - - 3.4 - -
FM09J - - 13.2 - - Center 1 44.8 - - 2.7 17.1 Center 2 45.7 - - 2.9 16.3 Interior 1 5.7 - - Interior 2 14.3 - - Interior 3 10.8 - - i PM10J 107.0 - 65.8 .6 39.4 E13-P604 - - . 58.5 .25 26.5 Reflected (Footeandles) Reflectance (%) R LR E13-P601 8.9 392 E13-P603 7.3 32 f i PM02J 7.6 27 ' PM07J 3.8 32 PM08J 4.0 33 PM09J 4.9 37 Center 1 7.7 17 Center 2 5.6 12 I l 29 l l
l Anpendix B CHART 2 LIGHTING LEVELS (foot candles) Work Area or Task Recommended Actual 50 25 Console surface 50 13 Dials 13 Gauges
. 50 50 13 Morers 13 Scales s 50 50 23 Panels (fron:) 10 Panels (rear) 30 Passage ways 30 . 14-107 Reading (pen, saali prin:) 70 40 Repair work (panel back) 50-100 3.9-24.6 Bri ing and Data Recording 70 37 ,
\
* "*"% = . _ ,_
l l l f i t 4 l 30
6.2 h0RKPLACE ENVIRONMENT
- 4. Finding: Category: 1 Illumination levels vary excessively throughout the control room (see Appendix B on the next page).
Improvement: The normal lighting level in the control room will be increased to a minimum of 30 foot candles for direct lighting. Implementation: Implement prior to fuel load. l l I ( 31
Appendix B CHART 1 LIGHTING SURVEY Incident ( footcandles) Normal Normal Normal DC Emerg. AC + DC uerage Benchboard Vertical Ave Emert Ave E13-P601 19.6 23.0 - 11.8 1.4 13.0 H13-P601 15.7 30.4 12.5 - - H13-P602 2 22.1 23.0 11.7 - - H13-P603 13.8 22.6 12.6 1.8 9.9 PM03J 27.1 27.7 .13.3 - - PM02J 21.9 24.1 13.3 - PM02J 25.2 27.7 13.6- 2.6 14.4 PM01J 32.2 35.2 14.7 - - PM07J - - 11.6 - - PM07J - - 12.2 - - PM08J - - 12.1 - . PM08J - - 9.0 0 0 -
- H13-P655 - - 4.6 .19 2.2 T49-P865 - - 3.8 -
.19 2.2
~ ~ ~ ~~ ~~~Near T49-P865 14.0 - - .71 8.3 PM18J - - 3.4 - -
PM09J - 0 13.2 - - Center 1 44.8 - - 2.7 17.1 Center 2 45.7 - - 2.9 16.3 i Interior 1 ~~5.7~ - Interior 2 14.3 - v - - Interior 3 10.8 - - - - PM10J 107.0 - 65.8 .6 39.4 H13-P604 - - . 58.5 .25 26.5 Reflected (Footcandles) Reflectance (2) R LR H13-P601 8.9 39% H13-P603 7.3 32 PM02J 7.6 27 ' l PM07J 3.8 32 PM08J 4.0 33 PM09J 4.9 37 Center 1 7.7 17 Center 2 5.6 12 l
.4 32
e Anpendix B CHART 2 LIGHTING LEVELS (foot candles) Werk Area or Task Recommended Actual 50 25 Ccasole Surface 13 Dials 50 50 13 Gruges . 50 13 M:cers 13 Scales 2 50 50 23 Panels (front) 10 Panels (rear) 30 Passage ways 30 . 14-107 Reading (pen, small print) 70 40 R: pair work (panel back) 50-100 3.9-24.6 Writing and Data Recording 70 37 , e l O s Y 4 33
6.2 WORKPLACE ENVIRONMENT
- 5. Finding: Category: 1 Illumination levels are not controllable in areas of the control room where close work must be.done.
Improvement: Desk lamps will be provided for those areas where close work must be done. Implementation: Implement prior to fuel load. l l l l l i l t l l I 34 i
6.2 WORKPLACE ENVIRONMENT
- 6. Finding: Category: 1 The emergency backup lighting system does not provide the recommended illumination levels (see Chart 1, Appendix B on the following pages).
Improvement: The emergency AC lighting level will meet the 30 foot candles criteria for direct lighting and the DC emergency lighting will meet the 3 foot candle criteria. Implementation: 1 Implement prior to fuel load. N 35
Appendix B
~ l CHART 1 LIGHTING SURVIY Incident (footeandles)
Normal Normal Nor:nal DC Emerg. AC + DC Average Benchboard Vertical Ave _Erert Ave H13-P601 19.6 23.0 - 11 8 1.4 13.0 H13-P601 25 .7 30.4 12.5 - - H13-P602 22.1 23.0 11.7 - - H13-P603 '23.8 22.6 12.6 1.8 9.9 FM03J 27.1 27.7 13.3 - - FM02J 21.9 24.1 13.3 - PM02J 25.2 27.7 13.6 2.6 14.4 PM01J 32.2 35.2 14.7 - - PM07J - - 11.6 - - PM07J - - 12.2 - - PM08J - - 12.1 - -
- - .9.0 0 0 PM08J H13-P655 - - 4.6 .19 2. 2 ' .
T49-P865 - - 3.8 -
.19 2.2 Near T49-P865 14.0 - - .71 8.3 PM18J - - 3.4 - -
PM09J - - 13.2 - - Center 1 44.8 - - 2.7 17.1 , Center 2 45.7 - - 2.9 16.3 Interior 1 5.7 - - - Interior 2 14.3 - - l Interior 3 10.8 - - - - PM10J 107.0 - 65.8 .6 39.4 l H13-P604 - - . 58.5 .25 26.5 l l Reflected (Footeandles) Reflectance (2) R LR H13-P601 8.9 39% E13-P603 7.3 32 PM02J 7.6 27 ' PM07J 3.8 32 PM08J 4.0 33 l 37 i FM09J 4.9 Center 1 7.7 17 l Center 2 5.6 12 l 1 l l 36
i Accendix 3 CEut- 2 LXGhTI1G LT/:LS (fect candles} Ree m ended A:::a1 Work Area or Task 50 25 Console surface 13 Dials 50
. 50 13 causes 50 13 l Meters 13 Scales
- 50 50 23 l Panels (fron:) 30 10 Panels (rear) 14-107 Passage ways 30 .
70 40 i leadi:g (pes, small pri=:) 3.9-24.6 Repair werk (panel back) 50-100 70 37 Bri:ing and Data Recording . e e
" e i
- s i
t l b k 37
6.2 WO[nPLACE ENVIRONMENT
- 7. Finding: Category: 1 Emergency lighting is not provided in the immediate area of the remote shutdown panels.
1 .
^
Improvement: Emergency AC and DC lights are provided in the immediate vicinity of the remote shutdown panels. The enclosed sketches depict their location. In addition, the panels are equipped with florescent lights just inside the docr which provides sufficient light to operate the panels. The power supply for these lights will be changed to an Emergency AC lighting cabinet. l ! Implementation: l Implement prior to fuel load. l l 4 l 38
ATTACIBENT 6. 2. 8 N o - A- E nen s nue y Ac tian rwa y
- o .
LIGHTINS CA GIN ET No. Y.T - U b 'U (tRC01T i b r-3 &
*~
g . M I c_ 2> B -- EMERS EMC Y D C, LtG ATNG 3 l LIGH Ting CA2iNET No 4/ - o u.s '
~l CIRCut7 g$ '
YN Y\ m m i -o M o
," I t
e
" 3%
l
< l I f 5 '
? $ 'la Q -----. -
I 5 l l I l DRAwuh Nor to SO A LL N E A3 vd MF.N TA TO NCARCST '/T FOO T N i e.t.e ocwco E- 937 E - $ *1 l l l 39
ATTACIO!ENT 6.2.8
, f.
m. A - Ees.RG ENcv A C LIGH TING a t.isAT/N4 C AGwE7 Ah. 45 ci= c u i t ,b 5 E m to r m 3 8 - EnLRGENCf DC. Lic. wrong
- LIG H r/N G CAoNET No. 93 6 3
1 CIR:viT 3 $ r
~
'O r--
y Q C OD t l t
+
A o E 3 a-34' m I o e.A w in s no r to s c ate. ry Foor g' MressenNr4 to wo u st < r k REG DRwG3 .
- E- TVI E - 199 gj 40
I 6.2 WORKPLACE ENVIRONMENT
- 8. Finding: Category: 3 Periodic illumination surveys are not conducted.
Improvebent: An annual illumination survey will be conducted in ! accordance with an approved procedure. Implementation: Implement prior to fuel load. __ . e 4 l l l 41
6.2 WORKPLACE ENVIRONMENT
- 9. Finding: Category: 3 Integral instrument lighting of displays, controls, printers, and plotters has not been used to compensate for inadequate lighting conditions.
Improvement: When the general area lighting in the control room is upgraded, displays and controls will be surveyed to ensure adequate lighting. Implementation: Long term study to be implemented in accordance with NUREG-0737. 4 - 42
6.2 WORKPLACE ENVIRONMENT
- 10. Finding: Category: 1 There is excessive glare on the labels throughout the control room.
Imprdvement: All labels in the control room are to be replaced. Black lettering on white background criteria has been established which will reduce glare. Implementation: Implement prior to fuel load. w e-f I l l l l 43
6.2 WORKPLACE ENVIRONMENT
- 11. Finding: Category: 2 The red status panel on PM03J has a luminance ratio (LR) of 25:1 to the adjacent area (20:1
- recommended max).
Improvement: The WILB on IPM03J will be modified to meet the luminance ratio criteria of 20:1. Implementation: Implement prior to sensible heat. l l I I [ 44
6.2 WORKPLACE ENVIRONMENT
- 12. Finding: Category: 2/3 Scram group system A 6 B indicator lights have a LR of 37:1 to the adjacent area (20:1 recommended max ),.
Improvement: The scram indicator light lenses are to be changed to blue to conform with the Licensee's standard lens color code. Once this modification is accomp-lished the LR will be re-evaluated. Implementation: Implement prior to fuel load. Improvement: If the LR remains greater than 20:1 a long term engineering study will be initiated. i i Implementation: Long term study to be implemented in accordance with NUREG-0737. 4 45
l l i l 6.2 WORKPLACE ENVIRONMENT
- 13. Finding: Category: 2 The white status panel on PM02J has a LR of 420:1 to the adjacent area (20:1 recommended max) .
Improvement: The Feedwater Heater Drain Valve status panel on 1PM02J will be modified to meet the luminance ratio criteria of 20:1. Implementation: Implement prior to sensible heat. f I 46
6.2 WORKPLACE ENVIRONMENT
- 14. Finding: Category: 1 The "C" annunciator audio signal (measured at the i
horn) was 8 db below the average ambient noise ! level of the surrounding area and was inaudible [ to control room personnel. Improvement: After appropriate modifications have been completed to the annunciator system (i e. directional audibles, 6.3-18), and the control room HVAC system has been
~
< final air balanced and noise criteria satisfied, the auditory alarms will be set at 10 db above average ambient noise level. Implementation: Implement prior to fuel load. i l i 47 l
6.2 WORKPLACE ENVIRONMENT
- 15. Finding: Category: 2 The " Reset Chime" was measured to be only approximately 3 db above the average ambient noise level.
Improvement: ' After appropriate modifications have been completed to the annunciator system (i.e. directional audibles, 6.3-18), and the control room HVAC system has been final air balanced and noise criteria satisfied, the
" Reset Chime" will be set at 10 db above average ambient noise level.
Implementation: Implement prior to fuel load. Na 48
. . .-. ~ . - - . .. - - - - . . - - . . . - . . . .- .. -. _ . . _ . - _ . _ _ . - . . . _ . . - . , _ . . - .
6.2 WORKPLACE ENVIRONMENT
- 16. Finding: Category: 1 The computer system audible alarm has a variable level control which was turned down during the audit.
When the intensity of this alarm is adjusted down, it is detectable only in the immediate vicinity of the computer console as a 60 cycle / second hum. Improvement: After appropriate modifications have been completed to the annunciator system (i.e. directional audibles, 6.3-18), and the control room HVAC system has been final air balanced and noise criteria satisfied, the
" Computer System Audible Alarm" will be set at 10 db above average ambient noise level. The adjustable control for this alarm will be removed or interlocked so that the minimum audible level is 10 db.
Implementation: i Implement prior to fuel load. i 4 i 49
6.2 WORKPLACE ENVIRONMENT
- 17. Finding: Category: 2 It was difficult to discriminate messages over the paging system in the control room.
3 Improvement: The Thompson PA system in the control room will be adjusted to ensure full speech intelligibility with-in the "At the Controls" area. See Attachment 6,2.17. Implementation: Implerent prior to fuel load.' N 50
SKETCH 6.1.13 REVISION 24 i APRIL 1977 y ~ ~. . . . .N ..
... ,.. .if
. . . .h. i.:- ' - " -' " ' . i 2'- ~ . . a ... .'. .'. - 3 M = e s .' -
. h.- NO LIMITATION AREA l
^
.";$;.-J'. .?;
c.f - : 3 The operator designateq
,;. i !
K "at the controls" may l 3
~
- L _. - -- -- -
move freely about thisl i , .- - 3 . area. ; i5 ,1 -m, 4
?.\ \ ' \ "W s Qs': .-
i XX X tb kx 4X fg\' The LIMITED ACCESS AREA _) i i _
,. J .. M _s operator designated.
Ig g .:fi_ "at the controls" may i . X X X g. ,
-. J.-- momentarily enter this
. j gX Yp
; , f area to acknowledge
!1 l. '
'^
. s.,s receipt of an annun-3 'It zX l' . ~ ' '
I iA, 4 j Id -Q j ciator alarm, but will f , not perform any cor- !J X f(
- l '4 rective operating acti@
3 5' g )(~i
/, II .X l "'
t l r . jlff','{ '
- k- p f s, LIMITED ACCESS PASSAGE J u AREA 0- -"
Q p'qw . g 1, ' E Tne operator designated
, ys s "at the centrols" is
- ) Xg :
I i
' / .L. \, ss, s authori:ed passage g .,j . ~X ,/ o34 through this area to
~ l *
. ss
,X.gi-l -
t l - . reach a LDlITED ACCESS
, [ l d's' 3 AREA.
s' i i , , e = p f\i ; 1, s , 3xy
, \s y .
, 549' *
\g~E I .
l 4X) 5 d
~
J ' # ~r \s - RESTRICTED AREA (.g
\, { XXx The eserator designate @
g s
'f.Z x. .,
"at t 2e controls" shall
.$, q. not enter this area y g . r "_*~, .7 '
L without a proper relief i g ,' -E!! 'i "* !!.i I!ili!! h x%j]vg
- p\j YX .
~ - y J .
2 .
. cca, - t , i
~ '
hMW-X-XY% ,y :
--/ -
3 - - !
/
~. ,, -... ,
. x *? '.a:L.
G*- _. *,. e o s r-->o .i.*1_, _.p_. ._= .=. t e e n. L y__ _ _ _ _ _ _ . . _ _ . . _, e Wet. M. Ilh8MER NUChaAR POWER ST ATION. U NIT 1 Pase n 3Artty ase n vSes m E PC#7 FIGURE 13.5-1 AT THE CONTR01.5 51
6.2 WORKPLACE ENVIRONMENT
- 18. Finding: Category: 3 The reverberation in the control room appeared to be rather high, although no formal measurements were,made. This was especially noticeable when many people were working in the room.
Improvement: An investigation will be initiated to review the reverberation problem. The results of the invest-igation vill dictate the advisability and feasibility of a modification to the control room. Implementation: Long term study to be implemented in accordance with NUREG-0737. l 52
6.2 WORKPLACE ENVIRONMENT
- 19. Finding: Category: 1/3 There is no lamp test capability and no use made of dual filament bulbs for failure indication (except for the annunciators).
.1 Improvement:
The on duty operators will review the main control boards once per shift to ensure that the indicator bulbs that are supposed to be turned on are lit. During surveillance testing as pumps , valves , an ' other equipment changes status, the bulbs will be verified to be lit. Implementation: Implement prior to fuel load. Improvement: An engineering investigation of this problem has been initiated. The results of the engineering _studg_will_. _.__. . dictate the advisability and feasibility of a modifi-I cation to the plant's control panels to provide lamp -_-. - - - - - test capability. The indicator light lamp test capability on_.the contr61~
~
.__ ~'
room inner ring panels can be broken down as fo lows-
+=
53
- 19. Con't.
Testable / No. of Lamps Identification Non-Testable 3370 Annunciator Lamps Testable 2140 Full Core Display Lamps Testable 32 Turbine Generator Display Testable Lamps 3908 Control Panel Display Lamps Non-Testable 9450 Total A breakdown of the 3908 non-testable indicator lamps is as follows: 901 Normally energized Control Panel display lamps. - 1375 Control Panel-display lamps energized during surveillance testing. 1632 Remaining non-testable lamps. A procedure will be approved which will assure that the operators review the control room inner panel lamp indica-tions daily. This will ensure that the lamps normally energized are operable. In addition, the operators will
'oe required to assure the operability of indicator lamps energi:ed during surveillance testing of pumps and valves.
From the above figures 7818 lamps or 82.7% of the total number of lamps can be tested, checked, or verified operable. To provide added confidence that non-testable indicator lamps are operable, they wi.11 be replaced with long life lamps which have been appropriately burned in, thus reducing " infant sortality". 54
4 6.2 WORKPLACE ENVIRONMENT
- 20. Finding: Category: 1 i
Tag-outs obscure labels, legends, indicator lights, and annunciator windows. i Improvement: A smaller safety tag and caution tag will be designed so it does not obscure the indicator lights. Tags will be removed from the annunciator windows. Implementation: Implement prior to fuel load. k 55
6.2 WORKPLACE ENVIRONMENT
- 21. Finding: Category: 1 Tag-outs are not securely attached to some of the vertical pushbuttons.
s Improvement: The tags have pre-cut holes to provide an easy and secure method of attachment. The tagging directives will be revised to direct that the operators loosen the collar, insert the tag and retighten the collar. Implementation: Implement prior to fuel load. 4 56
6.3 ANNUNCIATORS AND ALARMS
- 1. Finding: Category: 2
- Ifhile most visual annunciators are located above their i
related controls and displays, there are some exceptions. Imprdvement: MSIV Leakage Control annunciators will be moved to the control panels -- P654 and P655. In addition, contain-ment parameter annunciators will be moved from back panel IPM06J to panel P601. Implementation: Implement prior to fuel load. t i l l l i e 57
.~. ._ . ,, _ - _ _ _ . _ _ _ _ _ _ . _ _ _ _ , _ _ _ _ - _ . _ _ _ _ _ _ _ _ . _ . . _ _ _ . _ _ _ _ _ _ . . _ _ . .
6.3 ANNUNCIATORS AND ALARMS
- 2. Finding: Category: 3 Some related annunciator tiles are located on different panels.
Impr6vement: A detailed operations review is being conducted to identify specific annunciator window placement problems. Implementation: Long term study to be implemented in accordance with NUREG-0737. A 58
6.3 ANNUNCIATORS AND ALARMS
- 3. Finding: Category: 1 Annunciator window covers are not keyed or matrix-coded to prevent accidental interchange when they are removed for bulb replacement.
1 i Improvement: The annunciator window frame, where the window tile is an integral part of the frame, will be matrix-coded to
- prevent accidental interchange when they are removed for bulb repla
- ement.
l Implementation: Implement prior to fuel load. l l 59
6.3 ANNUNCIATORS AND ALARMS
- 4. Finding: Category: 3 Although there is an easy-to-understand grid coordinate system which identifies the location of any particular annunciator window, there is no labeling or marking on the annunciator panels themselves.
This requires the operator to count the row and position-in-rovf. Error potential is increased siner not all annunciator panels hav.. the standard 4 x 8 matrix. Improvement: The grid coordinate system will be installed on the annunciator panels. See Attachment 6.3.4. Implementation: Implement prior to fuel load. l l l [ i l l i 4 i I l 60
ATTACHMENT 6.3.4 i s l Go 52. T 2 i 7 l & l I l t vo m . N l l
~
C = Q
~
b o tu M M l l
- r<
Ie - m
=r 61
1 i 6.3 ANNUNCIATORS AND ALARMS
- 5. Finding: Category: 3 Some annunciator tiles are constantly illuminated during normal plant operation.
Improvement: An operations review is being conducted to identify specific annunciator tiles that are constantly illuminated during normal plant operation. The " dark" board concept during power operation is being investigated, however, certain problems do exist, e.g., Shutdown Cooling Inter-lock alarm is actuated during normal power operation. Implementation: Long Term study to be implemented in accordance with NUREG-0737. l l l l 62 l
6.3 ANNUNCIATORS AND ALARMS
- 6. Finding: Category: 1 There are no formal procedural requirements for testing and inspection of visual annunciators.
(Reportedly, this is an informal part of the shift change procedure.) Improvement:
~
The testing and inspection of visual annunciators will be completed on a daily basis. This requirement will be
^
formally promulgated in the Station Operations Directive, OS. SAD.01 and documented on the Shift Turnover Checklist.
~ ~
Implementation: Implement prior to fuel load. eq e WM -
=-m um 6
m
)
e oM M
,e m
l 63
4 6.3 ANNUNCIATORS AND ALARMS
- 7. Finding: Category: 3 No provisions have been made to permit the operator to determine which of several alarms initiated a sequence (no "first-out" panel or indicator).
i ,. Improvement: Current Emergency Procedure Guidelines and Emergency Guideline Contingencies are symptom oriented. The operator aggressively attacks the symptoms by initiating i preplanned actions. These actions are based on parameter trends. This approach has been fully evaluated in various BWR simulators and has proven to be successful.
~
Once the plant conditions are stable,- the process computer sequence of events printouts and the other control room indications can be reviewed to determine the cause of the casualty. An engineering study of this problem will be initiated. The results of this engineering study will dictate the advisability and feasibility of the addition of a first out annunciator panel. i l Implementation: Long term study to be implemented in accordance with NUREG-0737. l l 4 i r 64
6.3 ANNUNCIATORS AND ALARMS
- 8. Finding: Category: 1 There is presently no system of prioritization of visual annunciators according to severity. (Reportedly, this is being studied, and will involve both color-coding and l'ocation-coding).
Improvement: The following visual coding scheme is to be followed for the prioritization of annunciators. COLOR CODE ANNUNCIATOR CLASSIFICATION Red Used to denote emergency conditions which require operator action to be taken without undue delay to avert impending personnel injury, equip-ment damage, or both. Amber Used to advise an operator that a condition exists which is marginal, or to alert the operator to situs;~ ~~ ~ tions where caution, recheck, or unexpected delay is necessary. _ Blue Used to indicate system conditions that do not have "right" or " wrong" inplications, such as alternative functions (e.g., Pump #1A selected for use, etc.) or transitory ~ conditions (e.g., action or test in progress, function available), 65
- - - --r--- , t -- - - - - - - - - - - - - - - - - -
i 6.3 ANNUNCIATORS AND ALARMS i
- 8. Con't.
COLOR CODE ANNUNCIATOR CLASSIFICATION s provided such indication does not imply success or failure of opera-tions. Green Used to indicate that the monitored equipment has returned to satisfac-tory tolerance envelopes. Implementation: Implement prior to fuel load. r 4 66
6.3 ANNUNCIATORS AND ALARMS
- 9. Finding: Category: 3 Annunciator / alarm response controls are inconsistently located from panel to panel, and in several instances have arrangements which differ from the control room conve'ntion.
Examples: Controls on PM07J and PM08J have different arrangements. Improvement: Response buttons will be rearranged to standardize their relative positions and properly labeled. The silence button will be fitted with a mushroom cap to provide positive identification of this pushbutton. The PM08J panel arrangement will have the silence button above the other three buttons, as presently located. l r Implementation: Implement prior to fuel load. 67
6.3 ANNUNCIATORS AND ALARMS
- 10. Finding: Category: 1 On many annunciator windows, the characters are too 'small (less than 3/8") for easy reading at the required distances.
Imprdvement: A human engineering investigation will be conducted to determine the annunciator window character height to ensure readability from each panel's acknowledge buttons. New annunciator windows will be engraved once the character height is determined. Implementation: Implement prior to fuel load. 68
6.3 ANNUNCIATORS AND ALARMS
- 11. Finding: Category: 2 Different print styles are sometimes used on adj acent annunciator windows.
, Improvement: New windows will be engraved of equal quality. Implementation: Implement prior to fuel load. > j 4 l 4 69
6.3 ANNUNCIATORS AND ALARMS
- 12. Finding: Category: 1 On many annunciator windows, messages are crowded with inadequate spacing between characters and between lines, making reading difficult.
2 Improvement: New windows will be engraved Knich will provide adequate spacing. Implementation: Implement prior to fuel load. i i k I 70
6.3 ANNUNCIATORS AND ALARMS
- 13. Finding: Category: 1 Annunciator messages are frequently too long and wordy, contributing to message crowding. Some messages are non-specific and ambiguous.
1 Improvement: The text of all annunciator windows will be reviewed for correctness. New windows will be engraved, using the Standardized Abbreviation List. Implementation: . Implement prior to fuel load. 1 i l l l l l i I e f i l l 71
6.3 ANNUNCIATORS AND ALARMS
- 14. Finding: Cate; sty: 1 Many annunciator windows have temporary titles printed on tape.
These are especially difficult to read when the window 1 is iIluminated. ., Improvement: New windows will be engraved using the Standardized Abbreviation List. Implementation: Implement prior to fuel load. I l l l l 72 l
1 6.3 ANNUNCIATORS AND ALARMS
- 15. Finding: Category: 2 Many abbreviations are used, but abbreviations are not consistent frem one window to the next. Some contain misspelled abbreviations.
3 Improvement: The text of all annunciator windows will be reviewed for correctness. New windows will be engraved, using the Standardi:ed Abbreviation List. Implementation: Implement prior to fuel load.
1 i i 1 l 6.3 ANNUNCIATORS AND ALARMS l l
- 16. Finding: Category: 3 ;
While most annunciators flash at approximately 3 flashes l per second, some flash at rate of 1 or 2 flashes per second. (Reportedly, some new flashers are being tested). j Ex' ample: H13-P601 annunciator panel. l Improvement: ; A standard flash rate for the three annunciator relay l panels will be established. I Implementation: Implement prior to fuel load. 4 74
6.3 ANNUNCIATORS AND ALARMS
- 17. Finding: Category: 2 All annunciator windows precently:
o flash red-white to announce, o are steady red after acknowledgment, and o 'are steady green when cleared. t Red color for all annunciator tile windows is poor usage. There also are significant differences in shading from tile to tile. Improvement:
~
~~-~
~'The following visual coding scheme is to be followed for the prioritiistion of annunciators.
COLOR CODE ANNUNCIATOR CLASSIFICATION Red Used to denote emergency conditions which require operator action to be taken without undue delay to avert impending personnel injury, equipment damage, or both. Amber Used to advise an operator that a l condition exists which is marginal, or to alert the operator to situa-tions where caution, recheck, or unexpected delay is necessary. Blue Used to indicate system conditions that do not have "right" or " wrong" 4 i 75
l l 1 6.3 ANNUNCIATORS AND ALARMS
- 17. Con't.
COLOR CODE ANNUNCIATOR CLASSIFICATION implications, such as alternative functions (e.g., Pump 1A selected for use, etc.) or transitory condi-tions (e.g., action or test in progress, function available), pro-vided such indication does not imply success or failure of operations. Green Used to indicate that the monitored equipment has returned to satisfac-tory tolerance envelopes. The significant differences in shading from tile to tile is due to the use of different manufacturers and/or material. Material and engraving specifications will be - identified on each purchase order to ensure standardization. Implementation: Implement prior to fuel load. i 1 76
6.3 ANNUNCIATORS AND ALARMS
- 18. Finding: Category: 2 No annunciator panel localization is provided by the auditory alert horns or clear signal chimes.
Thegperatormust locate alarm indications by scanning visual annunciators. Improvement: An auditory coding system consisting of four separate sound sources will be installed. Each sound source will be located in the control panel near its associated annunciator windows. This coding system will enable the operator to quickly localize the sound source to a particu-lar control room panel without having to scan the total control room. Improvement: Implement prior to fuel load. l l I e 77
6.3 ANNUNCIATORS AND ALARMS
- 19. Finding: Category: 2 Auditory signals are not differentiable between critical and non-critical alarms, or between types of warnings, cautions, or alerts.
s Improvement: The directional auditory signals described in Item 18 direct the operator's attention to a localized area in the control room. He can differentiate between critical and non-critical annunciators in that area by the colored boots assigned to each annunciator as described in Item 17. Critical annunciators are used to denote emergency conditions which require operator action to be taken without undue delay to avert impending personnel iniury, equipment damage or both. Critical annunciators will be provided with red
- boots and will flash red-white. All other annunciators are considered non-critical.
Warning, caution or alert annunciators will be provided with amber boots and will flash amber-white. The amber boot annunciators are used to advise an operator that a condition exists which is marginal, or to alert the operator to situations where caution, recheck, or unexpected delay is necessary. Implementation: i Implement prior to fuel load. l l l l l 78
6.3 ANNUNCIATORS AND ALARMS
- 20. Finding: Category: 1 There is no distinctive audio evacuation signal available.
Presently, an evacuation announcement is made over the P.A. system by the Shift Supervisor. Improvement: The Thompson P.A. system is equipped with six different audible warning tones. One has been designated as the
" Site Evacuation" alarm. These alarms are to be tested during the pre-operational test of the system, after i construction is complete.
Implementation: Implement prior to fuel load. NN I l 79 I.. . _ _ _ _ _ . - -
6.4 CONTROLS
- 1. Finding: Category: 2 Some bar switches on the remote shutdown panels have to be held actuated for up to two minutes. This is reported to be very difficult and fatiguing.
1 Improvement: The control switch coding adopted by the licensee provides an adaptor known as a " glove" which is , permanently mounted on bar switch throttle valves. The " glove" provides sufficient leverage so that fatigue felt during actuation of these switches is ! significantly reduced. Implementation: Implement prior to fuel load. 80
6.4 CONTROLS
- 2. Finding: Category: 2 Bar switches cannot be readily operated while wearing gloves.
These switches are used on the remote shutdown panels, as well as several other locations where personnel may be required to wear emergency protective clothing, including gloves. Improvement: Bar switches used to operate throttle valves will be provided with a " glove" adaptor. This adaptor is a permanently installed device and provides the operator with sufficient surface area such that operation with protective clothing gloves may be accomplished without difficulty. Implementation: Implement prior to fuel load.
** + ,g I
81
6.4 CONTROLS
- 3. Finding: Category: 2 Rod control pushbuttons require excessive pressure to operate which produces fatigue in the operator's hand after several minutes of operation.
This^ problem is amplified when the operator is seated. Improvement: A mushroom handle will be developed so that the operators , may apply pressure with the hand instead of a finger. This handle will not be integral with the pushbutton. Implementation: Implement prior to fuel load. W 4 82
i
)
6.4 CONTROLS
- 4. Finding: Category: ?.
Pushbuttons on the Bailey and General Electric controllers are too small to operate comfortably. These pushbuttons also are flush with the controller surfdce. Improvement: The Bailey and General Electric controllers, located in the main control room, Auto / Manual pushbuttons will be reviewed and modified if necessary to ensure the buttons are easy to operate. Implementation: 1 Implement prior to fuel load. l 4 83
6.4 CONTROLS
- 5. Finding: Category: 2 The pushbuttons on the remote shutdown panel do not have activation feedback such as an audible click or the activation of an indicator light.
I Improvement: Initiation of the Automatic Depressurization System (ADS), subjects the reactor to rapid depressurization. The operator is given positive , feedback by observing the rapid decrease in reactor pressure, swell in reactor water level, increase in suppression pool level and increase in wate; temperature. Implementation: I Accept as is. 1 1 84 1
- t. .. .- - - . ~ __
l 6.4 CONTROLS
- 6. Finding: Category: 3 Two J-handles on the remote shutdown panel have poorly visible selection indicators (red arrow on dark back-ground).
i 1 . l l Improvement: Pointer marks will be filled with white paint te provide contrast with black control color. Implementation: Implement prior to fuel load. J 85
6.4 CONTROLS
- 7. Finding: Category: 3 Scme switch handles cover control labels.
Example: PM03J. Improvement: The Heater Drain Pump 1A Suction / Discharge Valve control switch and the Low Pressure Feedwater Heater Strhig 1B Isolation Valve control switch block control labels when viewed from directly above the control panel. The two control switch J-handles are to be replaced
- to-conform .to the adopted control switch shape code.
The new handles will correct this deficiency. Implementation: Long term study to be implemented in accordance with NUREG-0737. 86
6.4 CONTROLS
- 8. Finding: Category: 2 Both of two transfer switches must be activated to transfer indication at the remote shutdown panel.
This i.s not indicated on the panel. Improvement: A label will be added to notify the operator that both transfer switches must be positioned to transfer all indication. Implementation: . Implement prior to sensible heat. 87
, , - ~ - - . . . - - - , - , ---,n- - - - , - - -
6.4 CONTROLS l l I l
- 9. Finding: Category: 3 No consistent shape-coding, color-coding, or size-coding of controls is used.
Improvement: The color coding of all controls has been reviewed. Red color pads will be used to demarcate the following trips. RI Turbine Trip, Manual Scram Buttons, Reactor Feed Pump Turbine Trips and the Main Turbine Trip. The EHC Fluid Level Trip Lockout knob will be changed to black. The following convention is to be followed for knob coding.
- a. J-handles - Electrical Breaker Controls and Pump Motor Controls.
- b. T-handles -
Black T-handles - Seal-in valves with pull-to-stop function. Black T-handles with Plastisol coatings or Bar Switch with glove - Throttle valves.
- c. Oval handles or Bar Switch - Seal-in valves with no pull-to-stop function.
d.. Lever handle - Logic selector and/or reset.
- e. Knurled knob - Meter selectors and electric regulators.
Implementation: Implement prior to fuel load. . 4 88 _ _ - . - . _ _ _ _ _ _ . . . _ _ - - ~ _- _ . _ _ _ _ _ __ _ - _ . _ _ _ _ . . _
6.4 CONTROLS
- 10. Finding: Category: 3 Controls located side by side for the same function have different shaped handles.
Imp _rovemen t : The following convention is to be followed for knob coding:
- a. J-handles - Electrical Breaker Controls and Pump Motor Controls.
- b. T-handles -
Black T-handles - Seal-in valves with pull-to-stop function. Black T-handles with Plastisol coatings or Bar Switch with glove - Throttle valves.
- c. Oval handles or Bar Switch - Seal-in valves with no pull-to-stop function.
- d. Lever handle - Logic selector and/or reset.
- e. Knurled knob - Meter selectors and electric regulators. _ _ _ _ - . . _ _ _ _ _ _ _ _ . . . _ _
l l l Implementation: Implement prior to fuel load. i L t i l 4 89
6.4 CONTROLS
- 11. Finding: Category: 3 Rod Control pushbuttons have caps which are clear, yellow, and black, but there is no functional reason for the color differentiation.
3 Improvement: Color coding of controls has not been adopted. However, a human engineering' study will be implemented to determine the advisability and feasibility of color coding: Implementation: Long term study to be implemented in accordance with NUREG-0737. I l 90 l
6.4 CONTROLS
- 12. Finding: Category: 3 Some controls that are identical in si e, shape, and markings actuate differently (e.g. latching vs.
spring loaded). Improvement: The following convention is to be followed for knob coding:
- a. J-handles - Electrical Breaker Controls niid Pump Motor Controls.
- b. T-handles -
Black T-handles - Seal-in valves with pull-to-stop function. Black T-handles with Plastisol coatings or Bar Switch with glove - Throttle valves.
- c. Oval handles or Bar Switch - Seal-in valves with no pull-to-stop function.
- d. Lever handle - Logic selector and/or reset.
__ _ _ _ _ __ _. e. Knurled knob - Meter selectors and electric regulators. l Implementation: Implement prior to fuel load. 91
l 6.4 CONTROLS-
- 13. Finding: Category: 3 Throttle valve switches are of the same shape, size, and color as ordinary vab , switches. There are generally only tape tags to indicate that the oper-l ator must continuously hold these throttle valve switches to open the valve to the throttled position.
Improvement: , The following convention is to be followed for knob coding.
- a. J-handles - Electrical Breaker Controls and Pump Motor Controls,
- b. T-handles -
Black T-handles - Seal-in valves with pull-to-stop function. Black T-handles with Plastisol coatings or Bar Switch with glove - Throttle valves.
- c. Oval handles or Bar Switch - Seal-in valves with no pull-to-stop function.
- d. Lever handle - Logic sel-ector and/or reset.
- e. Knurled knob - Meter selector and electric l
regulators. Implementation: - Implement prior to fuc1 load. l 92
i 6.4 CONTROLS
- 14. Finding: Category: 3 Panel P603 has a mode switch key that can be broken off when the reactor control rod selection matrix panel is lifted.
Improvement: A mechanical stop will be provided on the control rod select matrix panel. Implementation: Implement prior to fuel load. l l l 4 93
6.4 CONTROLS
- 15. Finding: Category: 2 Control movements for on/off actuation on panels PM07J and PM08J violate plant convention.
l Impr.ovement : The Drywell Pneumatic Compressor Control Switches have positions as follows: BASE / STANDBY /0FF The control switches will be rewired to follow the following convention: OFF/ STANDBY / BASE
, Implementation:
Implement- prior to fuel load. I l { l l [ l I 94
6.4 CONTROLS
- 16. Finding: Category: 1/3 The T-handle controls for Feedwater Inlet Shut Off valves B21-F065B and F065A are located on the bench-board and the vertical display panel.
I 1 l In addition, these two valves are located about 15 feet from their mimic location on feedwater panel PM03J. Improvement: , The Feedwater Inlet Shut Off valves B21-F065A 5 B are used for maintenance isolation during outages. They will be associated with other feedwater controls and displays by color padding, as shown on Figure 6.4-16. Implementation: Implement prior to fu'el load. Improvement: j An engineering study will be conducted to identify specific control switch placement problems. l Implementation: Long term study to be implemented in accordance with NUREG-0737. l 95 l
i 6.4 CONTROLS
- 17. Finding: Category: 3 A " moving scale - fixed index" rotary control knob was found in the control room that did not have an index pointer.
A Improvement: The Main Turbine Reheat Controller's manual adjustment scale will have an index pointer added prior to fuel load. A human engineering study will be implemented to determine if this type of control fulfills established criteria. Implementation: Long term study to be implemented in accordance with NUREG-0737. i e 96
l 6.4 CONTROLS
- 18. Finding: Category: 3 The suppression pool selector on PM07J is quite low on the panel and the "both" position cannot be read under the handle.
Improvement: The positions of this Primary Containment Purge Selector Switch are reviewed in training. However, a human engineering study will be initiated to provide a readable label. - l ..- - - Implementation: Long term study to be implemented in accordance with NUREG-0737. l i 4 97 l
6.4 CONTROLS
- 19. Finding: Category: 2 The " purge" position on the post-LOCA selector on PM07J is the "both" position but is not indicated.
1 Improvement: The control switch escutcheon will be revised to provide the following terminology:
" Relief" - Only IVQ005A 6 B valves are open to relief drywell pressure.
" Closed" - The IVQ005A 6 B and the IVQ008A 6 B valves are closed.
" Purge" - The IVQ005A 6 B and the IVQ008A 6 B valves are open to purge the primary containment.
See enclosed sketch. Implementation: l Implement prior to sensible heat. 98
ATTACHMENT 6.4.19 A l CQ m y 'f m g o-o -- 8 g / E !!
< ?, e q __ * > --
8- / X %s
?
8 c 8- _/_ e e _ _ _ _ g 57 3 5 2o
< u 4
D@ M w 1 i to tu 3 e l A IN , ct 4 A C 3 o w ( A A l l e __ m .__ 5 _\ E~_h b8 e g E x t - 8 -{ 9-o N
? E <
ET C l db N 99
6.5 VISUAL DISPLAYS
- 1. Finding: Category: 2 Dirt and damage on the plastic cover of a remote shutdown panel meter obscures the scale.
l Imprdvement: The meter faces will be cleaned of extraneous material, repaired, or replaced. Implementation: Implement prior to fuel load. i 4 100
l 6.5 VISUAL DISPLAYS i
- 2. Finding: Category: 3 Some displays on the remote shutdown panel have glare that causes degradation of readability.
Improvement: Non-glare coatings will be investigated. A suitable coating will be applied to meter faces which have a glare problem. If this improvement is not feasible, an engin-eering study will be implemented to determine other solutions. Implementation: Long term study to be implemented in accordance with NUREG-0737. I i N
-w N
6 101
6.5 VISUAL DISPLAYS'
- 3. Finding: Category: 3 The general systems status board is located 8-11 feet above the floor and does not have a function label.
Impro.ement: A functional identification label of the Engineered Safety Feature Status Panel 1PM12J, will be provided prior to fuel load. The panel.is located so that view of the panel is not blocked from any point in the control room. The panel provides no operational input to operators and is only used for system status reference during shift turnover and outage situations. Implementation: Accept as is. However, an identification label meeting the established criteria will be installed prior to fuel load. l i l I
==
102
I I 6.5 VISUAL DISPLAYS l l
- 4. Finding: Category: 2 Some display information required during normal operation is currently located on back panels, while some unnecessary displays are located in the main control area.
Improvement: The drywell equipment drain and floor drain valve indica-tions, controls, and sump pump flow indicators and the Primary Containment Isolation reset buttons with the associated indicator lights will be moved to panel P601. In addition, a containment mimic will be installed on panel P601. The mimic will include indications of containment group isolations. Containment parameter indicators will be located near the mimic. Human Engineering considerations will be used to determine these locations. Implementation: The hardware and board modifications will be completed by fuel load. The mimic will be operational by full power. . . . 103
6.5 VISUAL DISPLAYS
- 5. Finding: Category: 3 Some unnecessary displays are located in the main control room area.
Improvement: An operations review will be conducted to identify specific displays which are not needed in the control room. Implementation: Long term study to be implemented in accordance with NUREG-0737. l l i { 4 Y m e 104
6.5 VISUAL DISPLAYS
- 6. Finding: Category: 1 The Process Radiation Monitor inverter had one missing indicator light and one light was burned out.
Improvement: The Process Radiation Monitor inverter " power on" lights will be operational when the pre-operational test is complete. Implementation: i Implement prior to fuel load. t 4
~
+w. ,
i I \ l i 4 I l 105
. l 6.5 VISUAL DISPLAYS
- 7. Finding: Category: 2/3 Normal operating limits are not generally marked with permanent markings on indicator scales.
Improvement: The normal operating limits are found in Operating Log Sheets and System Operating Procedures. However, to increase operator response capability, green transparent tape will be added to the external surface of selected meters which have a normal operating range. A red or amber horizontal line of tape may be added to denote a trip or alarm setpoint respectively. Implementation: Implement prior to fuel load. Improvement: When the operating limits are finalized and if the tape is helpful to the operators, it will be applied permanently to the meter scales prior to beginning the second fuel cycle. l Implementation: ( Long term study to be implemented in accordance with NUREG-0737. i 1 4 106
6.5 VISUAL DISPLAYS
- 8. Finding: Category: 3 No operating limit markings or trip setpoints were present on displays on the remote shutdown panel.
Improvement: The normal operating limits are found in Operating Log Sheets and System Operating Procedures. However, to increase operator response capability, green transparent tape will be added to the external surface of selected meters which have a normal operating range. A red or amber horizontal line of tape may be added to denote a trip or alarm setpoint respectively. Implementation: Implement prior to fuel load. Improvement: When the operating limits are finalized and if the tape is helpful to the operators, it will be applied permanently to the meter scales prior to beginning the second fuel cycle. Implementation: Long term study to be implemented in accordance with NUREG-0737. I l l 107
1 l l l 6.5 VISUAL DISPLAYS
- 9. Finding: Category: 3 Frequency meters failure is not always positively indicated.
Improvement: An engineering review indicates that the frequency meter fails predictably at the green band indirated by 58 hertz. A study will be initiated to determine the appropriate color for the band at 58 hertz. Implementation: Long term study to be implemented in accordance with - NUREG-0737. i l { l t 108 l l . . . . . _ . _ . . _ . _ , , , _ _ , __._ ,-.-__. . . _ . _ __~
6.5 VISUAL DISPLAYS
- 10. Finding: Category: 2 A white indicator light is used for a trip condition on the remote shutdown panel. Plant convention is yellow /
auber for trip and white for a general alarm. 1 Improvement: The RCIC Turbine Trip light on the Remote Shutdown Panel, ! which has a white lens, will be replaced by an amber lens. Implementation: Implement prior to fuel load. e k 109
6.5-VISUAL DISPLAYS
- 11. Finding: Category: 2 Remote shutdown panels lack any mimics, demarcation lines, or functional group labeling to enhance recognition and identification.
i a l
~ Improvement:
Relabeling, knob coding, lines of demarcation and color padding will be used to improve these panels. Implementation:
. Implement prior to sensible heat.
l l I i 4 110 __ .._ . .-- .~ ._.., -
_ _ - _ . _ _ _ _ _ .__ _ . _ _ - - - ~ _ . _ _ - - - _ . . _ . . _ _ . _ _ _ _ _ _ _ _ _ i i 2 6.5 VISUAL DISPLAYS i
- 12. Finding: Category: 2/3 Groups of meters in horizontal strings of 5 or more on PM07J are not broken up into smaller groups.
- Imprdvement:
4 Visual demarcation will be provided to the meters through the use of color pads, lines and/or global labeling to highlight the meters pertaining to a particular subsystem. ) Implementation: ! Implement prior to fuel load. , i Improvement: A human engineering study will be initiated to determine the position of horizontal strings of 5 or more meters. i i Implementation: j Long term study will be implemented in accordance with NUREG-0737. r I I 111 i
6.5 VISUAL DISPLAYS
- 13. Finding: Category: 3 Some meter pointers move right to left, violating plant convention, and causing operator confusion.
, Example: Main Turbine Vacuum on PM02J.
Improvement: The main condenser vacuum recorders and indicaters read absolute pressure in inches of Hg. As condenser vacuum is pulled, the absolute pressure does decrease. This meets established standards. However, an engineering study will be implemented to determine if main condenser vacuum should be expressed in absolute pressure or inches of vacuum. l Implementation: i l Long term study to be implemented in accordance with NUREG-0737. I i l l l l . i ! 112
6.5 VISUAL DISPLAYS
- 14. Finding: Category: 3 The setpoints of a few meters are too precise for the meter scale.
Example: Off Gas C.C. Diff. Process Controller on PM03J. Improvement: An operations review of controllers for setpoint/ meter scale precision / scale increment will be initiated to determine and correct deficiencies. Implementation: Long term study to be implemented in accordance with I NUREG-0737. 4 6 113
6.5 VISUAL DISPLAYS l
- 15. Finding: Category: 2 Bailey controllers and some Fisher controllers have scales that do not indicate units.
Example: Dump Valve Manual Control Indicator Improvement: Units will be added to the following controller scales: (a) Dump Valve Manual Controller (b) Control Rod Drive System Controller (c) Feedwater Controller (5) Implementation: Implement prior to sensible heat. l l l i 114
6.5 VISUAL DISPLAYS 1 24 Finding: Category: 2 Some meters give information that must be converted to different units before use. Impro.vement : The Reactor Recirculation loop flow indicators IB33-R611A and B measure flow in gpm. The flow meter will be changed to read percent fiow. Implementation: Implement prior to sensible heat. 2 I f 4 115
. .. - . .-.. ._~ -
6.7 CONTROL-DISPLAY INTEGRATION
- 1. Finding: Category: 3 The RHR FLOW A display is on the upper right side of the remote shutdown panel.
The RHR controls are on lower left part of the panel. Improvement: An operator's review will be initiated to consider Human Engineering criteria in the indicator location. Implementation: Long term study to be implemented in accordance with NUREG-0737. a m, I i 4 f 116
~
1 6.7 CONTROL-DISPLAY INTEGRATION
- 2. Finding: Category: 3 Condensate storage tank valves E22-F011 and E22-F010 have reversed control / display relationships.
Improvement: The indicators for the valves listed above will be relo-l cated to provide appropriate relationships with their l associated controls. Implementation:
. Implement prior to fuel load.
l l i I 1 ( . f f i i 117 L
.= . _ _ - -.
6.7 CONTROL-DISPLAY INTEGRATION
- 3. Finding: Category: 3 Switch E12-F014A affects the indication of Switch E12-F105A/
1WS073A, but they are separated by other controls. Improvement: An operations review is being conducted to identify specific control switch placement problems. Implementation: Long term study to be implemented in accordance with NUREG-0737. I I l l l l < - 118
6.7 CONTROL-DISPLAY INTEGRATION
- 4. Finding: Category: 3 A status panel horn bypass switch on PM03J controls the alarm for the status panel on H13-P602.
Impr6vement: An operations review is being conducted to identify specific switch placement problems. Implementation: Long term study to be implemented in accordance with
~
NUREG-0737. l l 119 l
6.7 CONTROL-DISPLAY INTEGRATION
- 5. Finding: Category: 1/2 Controls and displays for the containment isolation system are physically separated. They presently exist on three panels -- H13-P632, H13-P601, and PM07J. (Plans now exist to correct this difficulty by arranging indication and isolation on H13-P601 with secondary valves on H13-P632.
In addition, new mimic diagrams are to be constructed). Improvement: The drywell equipment drain and floor drain valve indica-tions, controls, and sump pump flow indicators and the i Primary Containment Isolation reset buttons with the I associated indicator lights will be moved to panel P601. In addition, a containment mimic will be installed on panel P601. The mimic will include indications of containment group isolations. Containment parameter indicators will be located near the mimic. Human Engineering considerations will be used to determine these locations.
- Implementation
The hardware and board modifications will be completed by
- fuel load. The mimic will be operational by full power.
l 120 l
6.7 CONTROL-DISPLAY INTEGRATION
- 6. Finding: Category: 3 The arrangement of controls and displays does not always follow the left to right convention.
Example: PM08J, Service Water Pump Motor and , IB,1A,1C,1D. Improvement: An operations review is being conducted to identify specific control switch placement problems. Implementation: Long term study to be implemented in accordance with NUREG-0737. ___ l f 121
6.7 CONTROL-DISPLAY INTEGRATION
- 7. Finding: Cctegory: 3
, Controls and displays on PM16J that are grouped together are not always functionally related. The ammeter switch and load centrol switch on PM16J should be located with the other electrical distribution controls / displays. Improvement: An operations review is being conducted to identify specific control switch placement problems. Implementation: Long term study to be implemented in accordance with NUREG-0737. l t i 4 122 i
6.7 CONT 43L-DISPLAY INTEGRATION
- 8. Finding: Category: 3 Functional use was not considered when grouping the controls / displays on the remote shutdown panels (e.g.,
primary and secondary modes of operation). s Improvement: An operations review is being conducted to identify specific control switch placement problems. Implementation: Long term study to be implemented in accordance with NUREG-0737. O he.h g ei i l l l 123
6_.7 CONTROL-DISPLAY INTEGRATION
- 9. Finding: Category: 2 Demarcation of associated controls and displays was not used sufficiently.
Improvement: The relabeling, knob coding, lines of demarcation and color padding of control room panels is shown on the following pages. Panel Designation Figure 1 - 1H13-P601 Figure 2 - 1H13-P602 Figure 3 - 1H13-P603 Figure 4 - 1PM01J Figure 5 - 1PM02J Figure 6 - 1PM03J Implementation: Implement prior to fuel load. 9 9 124 \
4 HI b O M C U M O C .
- C C C. O O
Ub
.e ct, M
CM m. U 4 O Z }
~
N
'/,,,.
e... . . .
/
,/. p/
,a , , ,
s ,, - - s,-- r ..:. N
</
N ,'- -- ... . N N _.- ::- \\ - ,- , s .'/.. xx x sx ,-:- N , ,, -
- e NN < ,
', x ;' ,- ,! .?: /
8
- w w a e - -
5 5 E n s s 2
=
w e a I= a a o
=
8 c 0 6
9ZI e l i 3 0 ! i, 3 h$3
~
*~ -
O O
~
2 2 0 n # n r~. ,~ .
,~ ,
w, .a p O '
- O ? : ; ; P F .
OM , 3: _ O . E i ', - 15. ga ' ;; g- - - . - - o'# ~* : s-uO. - i .
- Q.U:: -
- 7
- - -3 s .-, :
1 .
- s~'- , .
.i h o. .
r
- I~..%
4
#!iit: .,
,l ..
,e . _
ll ,) N 4 ' j . I ' l 2 hl!!! E : ' d2 f. . n c. .; , l
. . . . , rs l l l I' h'.; J,lE a [ -.
l pa 9 t
- ,6.:r i ;; . .
. 1 3g
, ., E d ! .i :![ j i tr .n.rm, b' '! 5 7 '! i r DI .$ C., ':I C; 'i.
- n. . 4
, a . .. - ~ .
',,,,, .g ' ;
j y'::j;1i
;- m : +
i+ 1:. . .. i. I g e.3 , l ! r
! p .;
.3 CI' it. u) ed l
e?j :$ i 1'i m m .s1.c
. i
..., t
- p 3 Ed -! . e
-"'. un g.)
50' @ i - 33E ,' C?ll:el 'f C335 3 8 i .
-u " " 3 2 3:5 -
$tW .
~
. y . ~ 4 *,,.2,5 - ' -
.';nt ? :. * #- ':',iS!? \ p i
. .. ew
- o s3 *v y: y~= oe )
=
- '* r .c -s s :r s, ~/-
- c' 3 - - _
3 i
!C- . . ia,.L ! cJ t; L. !L.
E .
.a . .
A - s> r 2z ,8 I f t
- E i 5 ' * '
C 3 "~-M ~' - e
*9 z e=
i i
' .o-.,s .
v~. 'b
- Oi 3s T.3 n. I l, 3 :! F ?
o .s > , ~
-i _-. "I: I--- l W# -
U t __ __ _-_ - - _
'l i I3.E. p+ - -
j 3 l:C $LJ 5'J
~,* m.,* g ND
= I '3 e % -: a ~.7 is EMI f' 2 1 e '- t .- ! " T .
I I ., 3 3.7 p p "# f. p,im
'# p
# 49'8mm /N #M o
s./ # # # , dh8"' J
'g n i 1. J,ed J3'% >,. --
**tm l a, O' ':#Q# Jh
>W 4
-.-= .- .- s - .-
,b
~
.-=
o f4 ed 4
"Oe O .==
~
a.=_2. C ". C
=a.',, %J % d' * .
'a.
m I i...-=. . ---
- w -
g I ;- oco ~ 3, h 'o% E i .e t
= ,-
l ,
.q 3 0 0 *"' o - #
C
- f 53 5 l . == o e
2 ll::!O 2 ::
- s2 o o
3 ,. eo 3
) : 4e 8 3 3 ) . ,,,=4. 1. Q .
$ ' ) N
=2 'I .
*e 3e .
. i.;
eO i I" '
.l
l LZI 8 I .! 8
, 't I
6
%C 9m.e y *mme
! 8 .'.y
[ ~
= ,1 *1
#$ 8, J = J
.I .'-
g [ : s 3 u. ngn.c.. l mi' m p L o oc . i;I N l!
. osi oD. -! C: aB t.u
.W
. *y ,
i e e _4 *.. j g E*
- g * ,
f 1 s ! O "'"'*7, fm"* l Q
= - -
m ei s.= == , &. (-- O eeQ ' l I ' ' g T ," il I .. t
. . ,~
i I
- I g
- i 3 WO
% j %
e l l y.j L f .
.g . , , .
g_ m. v . ....
. . . - 2 . m e . ,-
n- i , . . . . . . ) ,'gg
- i
. . i
- i. . .., . . .
. . e
; . .G e,
.g.2-'e
. g'
' ' ' i u ' ' ' '
. 1 ' .3 .M_gy *gg7 -
i 4 8. .
'. Sir a
. ei f t
t
;4 %* h
- e
. f ' rs =
...=m.
e # i- . . sy . - O e .. ard ,. S* ',,e. ' .. a. ; . ..s. ,, .s . .ro sT.
.r ,,&.
- t .
o . , , . . ,
}
.- e. . .
i...
- it a .- - ,
.. y,,
p.
...i l' ; .
W. . . m
,If.
i
! T. C EG8>iD i
a. g g tp . , e as: O O '# 0
.~.
ndO # 0 L
'..345;- -
an
- - o D oe -., e. o ,y .
33.I't , l d I N It-i l r I l l e
-e-, , -- --,a- , --.-.,,e-e- y-m,-,----,,-,w--.-v,.e--
8ZT 4> 6 l I
- _ .T //
}., ,,,. . a l ; '
, t ,. p / /, '/,
t' , . , , t .- .,/
- ' k o~ ~ s
/ / / '/ s , ,
< ! r -er# # , . , s/, G .
f - l ' o't--* I a.
;'y;
- <s,g ;(mii, n sg - s.,,
e,, ; ,s', ,' , , ,s' I ' . t! / m*gs7"
. , , e.
' ee: " .g' .?3, i ..' $ 3 ?
5 s3 4.Q i #,s'f rr s s /~O 's s /
.. J. :,
r - O'! e s /,c 7 s/rs c'ol o, cz ,. O! c e i_ o 2 o
- . A f t ci .C.: t: '# "
, * */=
l A i I * . gli <= l. , i= 4 a I ll L. =a = O
==== == ec i w
m 't 5
> ' ' i , - p iZ l . d i ! -
j@! a u I
' i u.
I .
! n '
I t . le> t @C li!i li'i-i t ju
,g
====
I ,!.
..t
====:
j @ {i
' '
- s ;
rl = - m - { Q < u =i i= t s ,
.N .
=
,' Dl !O :,
! O '
y. 1 .2i' ~ a
._m i. _-
, , i -- :'-- .; _---
g- 3 l 1- ,'s - .
._ I i s
I : , l e
====
( l i 6ZI e I. .
.P j
..ei -.
. i D_
I =
. O .- u , J a ._.m : .-
ii,,9 1 c .r : _ _ _ _ . l i I . ii
' ,e ii_
. U H_ C O c rt_.- u u - O e ,
l in-i j .,
- ,. , l ' *
.m '
!= g. I .
- i. -
._ -- L.
' = =, _ _ _ -
-E8t icf~ :3 m l;-,li - iOO
I i
!c =M 'Q-i 0- -O O I -i
.I ,,
l l= !u 6 l ,
. 1I IOO L. ._ n._ _ ..: c -
- i. . ._
i
-'lj o
_. OO J: I . M. C lC a I j' , 1 . _j!_I J O O j ':-O-! O ; 3 0 3'
- -. u g
3 ,,,:g ii is _ O:0 i i 3 m g O i , . _._mi. e 3 i~$ - 1 _Il! ll. _ }'O O [ Oi G-Q0l*C - i -- . = i g $ 1 : : ,) . 1 -- CO n - > m - I . . _a. .- : n_ 6
.*a c ~=
I l l - OO ' '
- r'-04 0.
- !O E -
$a !!5 0:0
'. lO 'O l
l a
-= c- -i I il .
.u i j 1
_ i g l t n_ O i +3 .. a' I;l i 1 f FI*O O M. --
. o biOJ ! 3d_F_L:
~
~f O -
l 1
--l ; 'li. *--" 'N j lsl .
_ ,- n O !-:.-
- . A OO ! [=J r: .-
,i n n. i I
. L_
' i
- !! t l
lOt
,=
d.i I .! I l C:O i .
'O ci 1.i I C n n.
i
=
, i _.
- u. .
{$ l
,-l [_j l l lLI I,,0 u_- . L-p. - _-..ms, E< .
e i ,, I
.. i
-* .I i -
o l- Il I; i: : C O!i. - 3l l:I l
,e 1: o.== ! . .., . c n .I
+
= = ,
,, i. : . _ . . -
. n_ i
$4 .
O 0 ~
.i 7.l!.==mc.;
i 4 _
.J , . iF.
j
- mas :===
, w. i . ,_
, ... _._.--i i ;Y , ,.
D_ ,I-7 , IP i i '* l'_ . _:J,. - . .
} - - - - - - - - - - - - - - - - - - - - - - - -- - . , , ,,-----,s_---w, - - --.,e -,-x m - - - - - . . g -
y ,
OEI . en i; 1 !. .-==
- v. =
,-t , , a . 4 l
=o i
!! w%, ail is g3
=
I g l. i i i g l i. i g' i f mQ so y lt ! [
? . i. m -
.i I
{ e .e 6 l l I I i ! I ,l l *' i l l } :. y .- m i
.- i o
p < l m .m 5 l f
- %, s i .9 -
i* { Ce t - j u$. ;, I N e.4m 9, ,l, so ; Ih. e_ I ! i 1 m wi! > 6 6 .2 I*I .*""!I
- i 9$
-o- ~~ i l
- E
- f. 't 3 -
ie$* "S _J e-: W
. . . - .co r e ,- o - :3. ,
g
'Do =-* e6 I-== 0 6C W
"")
,i t6 - o , eneo -
i f us - i i { -
== ; i co n c i ,
~ 8" *
, t oo - o -c6 - d g.2 i -
4
- C 4 i
P oo: co - ; p 3 -c b
- 8 - ' 5 d e '- 3 lll ag l . eo -
28 ! - S . j m. 3 7 8 CE ~ E " O """ E n
>= =. i, .
t l,, , .3 : > -e-3 -: . ge =e .*] I , lc ,, -3 6 l.s:3 3 .--. g gs .L. [
;-3 '
, I i -
i
- k. -
g
.. e t-- : -; --- e -
.* l:l l lo -
-3
( l le it :
.i. o t-.
8 _- o, p2 -. x, og l . I 3 I e
. 7 g.
[,, x-u , e8 eOm. .,
- a o c c -, .
8 i s. -: , ;
*2
-8 i
m *. OC* *? O -O-3
=4* 4' t g n o, sn ;.
, e o o --
jgg- 1 , f.oo 18-e p o;
'u.=*
I e t I, 2eo-
.i
,g 7; - ;; - g p=.
' . 2 -a-oJ A =, ' ;
m ; 3 - S - . 3 .l d
- 3 --- o- i 3
I :co e
- i. -3 .- o - -i
,j : i-e-o , l .-
a ; ec o, -2 - -
- o - {' ' -
- ?
e g3 -: 4 ! i !
< oo - .
.o .
-o-3 ,
i-
- -e.
a .'
. . -: -3
- 3 ,
t : -2 .-=I - t - O f -- W ' - -: 5- .
,.. i
1 l l IEI
/ ,
- i n-1 u's', n : ~] L ,,
l. ( , ,, n,, l, ,I l',
,/
i a, !* l
. 1 -
s. i ( , i __'__4 ,,-
,t i; 'r,i, <,,..U,3 y < O.? .. $ , 1
- s. . . .
' s, e'
, , /, } , - - - i
. . .. x /
k' ; NT Lt 3.2...a i s ,- i
'1 \l.:. ?-).a., d,'.n',' __~.
t ten
-- ,f / J i
i # -' D, OS !, 'r '
'v \ \\\T . N .k' *N(j M N ':k'c'Ni'sN 5 l1
[c. s .x
' .^
- g iqs,7 [(G m i N{
\ _N ., N' ! -,
s , x sg
-; N x s' q'INY lI
$ k , NN.2%
i N
.y o l ! !, N :: >, scyx x: ->
E s - l n; 'i s. m , N N M. Nics d %J f i i! ix,' . x Ni ti_ 10 s. x,x i
; s \'\ .b.
__sfs.G i\ s c...
" ' > "O=G:0
.. !.?3. . O 1 08 e 0 -i 3.
! l e = -- : neO:0 ' s* ce
** O ? O i G '
u! .l p @i O 0 l 3 0 j 0! O ! .
'i O '
!l 1'
'oneu:na i ci n_
- O . -n '. O S
l ! l.'5 :.
}x
,c
- _ : , u . ,Li. :ec c,cew na2s u. :; L, i, i e..g , . e- -
2 e g- ,
' E -
9 $0:0 )ChC5C
,' /,', ,', , pgen r,,(,g q.g.,;i
~ ' ' *
! ,,, , ,i , ,
1 , . ,
' ,,,,/ ,'
, e' g *i,',,'
* ,, ' , n r
.sp
/
\/' . , g
* , s y' ' ' ' GM' 'g# g-s#a?md= -
s .h I ,* ?_"
#1 ;' 5 '
- 5. e '/ s 'T
- =- o u ^,i l
I., os l1 b2L L , . ' L.f . C ':- ! ! , ,
,' s ,
l 3 (/ -
- e 3
nI t i g
)
i
- .h es_ 's. s.,g :w m:u s \ '
,Y
, ,s'
' / * .$ , , '
,' ,' *,s ', ,
,. ,,.,,,,,,,,1' O
I i 6.7 CONTROL-DISPLAY INTEGRATION ;
- 10. Finding: Category: 3 The purge selectors on PM07J are inconsistent in their use of "both" red light indicators relative to the actual position of the selector.
Improvement: An operations review is being conducted to identify specific control switch problems. - Implementation: Long term study to be implemented in accordance with NUREG-0737.
"** e we -g- .m. ..
Nhar 4 #N *'" l I 4 132
6.8 LABELS AND LOCATION AIDS
- 1. Finding: Category : 2 No panel designation labeling is provided.
Improvement: Panel labels will be installed utilizing the S :andard-1:ed Abbreviation List. Implementation: Implement prior to sensible heat. ein-t
+
O 133
6.8 LABELS AND LOCATION AIDS Category: 2
- 2. Finding:
The location of labels on some panels is not con-sistent (some above, some below). Imprgvement: The following convention is to be followed for Control / Display labeling:
- a. All Panels - Black lettering on a white background,
- b. Vertical Panel - Labels should be placed above controls and displays. Global labels for subsystem, module, or component identi-fication should be above all controls and displays.
- c. Benchboard Panels - Labels should be placed above controls and displays. Global labels for subsystem, module, or component identi-fication should be above all controls and displays. Where space constraints preclude l
the use of placement criteria for safety related systems, the cases will be documented f I and submitted to the NRC. Implementation: Implenent prior to fuel load. 134
[ 6.8 LABELS AND LOCATION AIDS Category: 2
- 3. Finding:
There are no labels on the outsides of either remote shutdown panel. i Improvement: Panel labels will be installed utilizing the Standard-i:ed Abbreviation List. Implementation: Implement p'rior to sensible heat. t \ 135
6.8 LABELS AND LOCATION AIDS
- 4. Finding: Category: 2 There are no warning labels on the fronts of the remote shutdown panel doors to warn that the doors are alarmed.
Improvement: Panel warning labels will be installed utilizing the Standardized Abbreviation List. Implementation: Implement prior to sensible heat. k i l l f r 4 f f f 136 I
6.8 LABELS AND LOCATION AIDS Category: 3
- 5. Finding:
There are no indications on the bar switches on the remote shutdown panels to tell which switches latch or which must be held continuously. Imprbvement: The following convention is to be followed for knob coding:
- a. J-handles - Electrical Breaker Controls and Pump Motor Controls,
- b. T-handles -
Black T-handles - Seal-in valves with pull-to-stop function. Black T-handles with Plastisol coatings or Bar Switch with glove - Throttle valves.
- c. Oval handles or Bar Switch - Seal-in valves with no pull-to-stop function.
- d. Lever handle - Logic selector and/or reset.
- e. Knurled knob - Meter selectors and electric regulators.
Implementation: Implement prior to fuel load. 4 137
6.8 LABELS AND LOCATION AIDS Category: 2
- 6. Finding:
System labels for individual systems are located too low on P601 and P602. Impro,vement : System labels will be placed above the indicators on the vertical section of P601 and P602. Implementation: Implement prior to fuel load. 4 138
6.8 LABELS AND LOCATION AIDS Category: 2
- 7. Finding:
Labels for the alarm lights on the remote shutdown panel should be located closer than they are presently. Impro,vement : The labels for the alarm lights will be located closer to the lights. Implementation: Implement prior to fuel load. 4 i 4 l l l \ 139
6.8 LABELS AND LOCATION AIDS
- 8. Finding: Category: 1 Temporary tape mimic labels do ne' adhrre well to the benchboard.
Imprqvement: Non-permanent labels will be replaced. However, it is recognized that the use of non-permanent labels is necessary during plant start-up because they supply useful information to the licensed operators during plant construction and testing. An adminis-trative procedure controlling and recording the use of non-permanent labels and their replacement with permanent labels will be established. Implementation: Implement prior to fuel load. l ' 140
6.8 LABELS AND LOCATION AIDS
- 9. Finding: Category: 2 The lettering has rubbed off of the Bailey Feedwater level controller because the painted letters were not covered by plastic.
1 Improvement: Lett.ering will be refilled with white paint and then covered with a clear plastisol coating to prevent the lettering from being rubbed off again. Implementation: Implement prior to fuel load. [ 4 6 l 141
-a,
9 6.8 LABELS AND LOCATION AIDS Category: 1
- 10. Finding:
The label on the Steam Line Inboard Drain switch on P602 is handwritten.
.s Improvement:
New labels will be installed utilizing the Standard-ised Abbreviation List. Implementation: Implement prior to fuel load. k l l l t a 4 142
6.8 LABELS AND LOCATION AIDS Finding: Category: 2 11 . Label content on the remote shutdown panel is not clear and uses inconsistent terminology (e.g. "Suppressio11 Chamber" on one, "Supp Chbr" on another). Improvement: New labels will be installed utilizing the Standard-ized Abbreviation List. Implementation: Implement prior to fuel load. l ( i l l 4 143
6.8 LABELS AND LOCATION AIDS 12 . Finding: Category: 1 The labels for the Reactor Water Cleanup System Conductivity recorders are inconsistent since the outlet is on the left and inlet on the right. This is in conflict with the mimic flow indication below it. Improvement: The recorder positions will be swapped. Implementation: Implement prior to fuel load. l l l l l l 144 t._, _ _ _ .--_, _ _ _ ,
6 6.8 LABELS AND LOCATION AIDS
- 13. Finding: Category: 2 Label abbreviations are not standardized and some label abbreviations are used for different meanings at different locations.
Improvement: New labels will be installed utilizing the Standard-ized Abbreviation List. Implementation: Implement prior to fuel load.
---- -- . - . - = . . - - - . - - . .
l _. l l l e l l 145
6.8 LABELS AND LOCATION AIDS 14 Finding: Category: 3 Several adjacent bypass channel selectors have inconsistent labeling (G-A-E-C vs A-E-C). Improvement: An operator's review is being conducted to identify specific switch problems. Implementation: Long term study to be implemented in accordance with NUREG-0737. 4 146
6.8 LABELS AND LOCATION AIDS
- 15. Finding: Category: 2 Some controls are identified by both G.E. and S6L numbers.
Improvement: New labels will be installed utilizing the SSL num-ber. Implementation: , Implement prior to fuel load. 4 147
l l i 6.8 LABELS AND LOCATION AIDS
- 16. Finding: Category: 2 A label was found to read " Turning Gear Engaged."
It should have read, " Turbine Zero Speed." l Improvement: l A new label will be installed to read " Turbine Zero Speed." Implementation: Implement prior to fuel load. l I 148 t I
6.8 LABELS AND LOCATION AIDS
- 17. Finding: Category: 2 Wording on labels is not always brief and concise.
Improvement: Labels will be reviewed to ensure the wording is brief and concise. New labels will be installed utilizing the revised wording. Implementation: Implement prior to fuel load. l l I l I l l 149 f l
6.8 LABELS AND LOCATION AIDS
- 18. Finding: Category: 2 Some labels do not have at least one stroke width between characters. _
Improvement: The following convention is to be followed for stroke width: s BIT SIZE LETTER SIZE
.015" (Small 1/8", 5/32")
.030" (Large 1/2", 3/8",
1/4", 3/16") (Engraving Bit Sizes .015 and .030 are approximate). Implementation. Implement prior to fuel load, e l 4 150
~
l l 6.8 LABELS AND LOCATION AIDS I Category: 2
- 19. Finding:
Color-coding of labels is used inconsistently where any attempt is made to use it at all. Improvement: New labels will use black letters on white background. A color-coded dot is used to denote electrical divisions. The color dot convention adopted is as follows: Electrical Division I - Yellow Electrical Division II - Blue Electrical Division III - Green Reactor Protection - Orange Implementation: Implement prior to fuel load. 151
6.8 LABELS AND LOCATION AIDS
- 20. Findings Category: 3 The color scheme used on the radiation monitoring panel does not appear to be consistent with the overall plant color scheme.
Improvement: A human engineering study will be initiated to establish a consistent color code for use in the Main Co.. trol Room. The radiation monitoring system panel will be modified to be consistent with the established color code. Implementation: Long term scudy to be implemented in accordance with NUREG-0757. l l l I 4 L i 152
l i 1 4 6.8 LABELS AND LOCATION AIDS
- 21. Finding: Category: 2 All Division 1 labels should be yellov to be consistent with the Control Room color scheme.
Improvement: All labels in the Control Room are to be replaced with black lettering on white background. 1 Implementation: ]' Implement prior to fuel load.
** WN-* * -%*e.. _. _
*W %
e l 153
i 1 l l 6.8 LABELS AND LOCATION AIDS Category: 3
- 22. Finding:
Both " drift" lights and " full-out" lights on the Rod Display Indication panel are red. Improvement: Annunciator AH303, " Rod Drift", provides the operator with positive information that a rod is drifting. The operator must determine which rod is drifting by observing the full core display to see which red rod drift status light has actuated. The operators experience this abnormal condition during simulator training. Since the Simulator's Full Core Display is very similar to the licensee's Full Core Display, this simulation is very authentic. The operators are readily able to differentiate bet-ween the red drift light and the red full-out light. However, an engineering study will be initiated to review the color coding in the Control Room. Implementation: Long term study to be implemented in ac cordance with NUREG-0737. i l i 154 l
6.8 LABELS AND LOCATION AIDS
- 23. Finding: Category: 1 The RHR Shutdown Cooling Injection Valve (E12-F053B) has a yellow label (meaning Division 1) but has a tape label above (in blue) saying Division 2.
Improvenent: The RHR Shutdown Cooling Injection Valve (1E12-F053B) connects RHR loop 1B to Reactor Recirculation loop 1A. This valve is powered from RXMCC 1A which is a Division 1 bus. The yellow label is correct. L The blue dyno tape will be removed. Implementation: Implement prior to fuel load. 155
1 i 6.8 LABELS AND LOCATION AIDS j 24 . Finding: Category: 1 Mimics do not have primary and secondary paths indicated. Improvement: A consistent scheme of color and shape coding will be used on all mimics. Mimics will be made of colored tape that adheres well to the panel surface. Thick lines (1/4") will indicate primary flow paths and thin lines (1/8") will indicate secondary paths. Implementation: Implement prior to fuel load. 1 156 i
6.8 LABELS AND LOCATION AIDS
- 25. Finding: Category: 2 Not all mimics indicate direction of flow and those that do are often confusing.
Example: Off Gas System mimic, Feedwater 2 System mimic. Improvement: Direction of flow w'ill be indicated on mimics. Implementation: Implement prior to fuel load. 157
6.8 LABELS AND LOCATION AIDS 1
- 26. Finding: Category: 2 Color-coding of mimics is inconsistent and incomplete.
Impr.ovement: A consistent scheme of color and shape-coding will be used on all mimics. Mimics will be made of colored tape that adheres well to the panel surface. Thick lines (1/4") will indicate primary flow paths and thin lines (1/8") will indicate secondary paths. Implementation: Implement prior to fuel load. m. 4 158
6.9 PROCESS COMPUTER
- 1. Finding: Category: 3 The system has very limited output capability, and is awkward for any general purpose operator use.
Imprqvement: The process computer system will be upgraded to increase output capabilities. Included in the upgrade will be an improved operator's I/O (input-output) unit which incor-porates human factors concepts and enhances operator usage. Implementation: First refueling outage. i i i l l t l 159
6.9 PROCESS COMPUTER l
- 2. Finding: Category: 2 All process parameter addresses must be referenced in an index list near the console.
These points are not cross-indexed by name, system / subsystem, or functional group. Improvement: A cross-index will be prepared which lists process parameters by system / subsystem, by name and point I.D. for ease of reference. The cross-index will be maintained at the computer operator's console. Implementation: Implement prior to fuel load. l l l l l 160
6.9 PROCESS COMPUTER
- 3. Finding: Category: 3 The process computer in the control room lacks graphic trending capability.
Improvement: A CRT console which is part of the Technical Support Center computer display system will be located in the control room as an aid to the operator. An engineering study has been initiated to provide color-graphic displays and trending capabilities. Implementation: Long term study to be implemented in accordance with NUREG-0737. I l 4 l 161 l l l
6.9 PROCESS COMPUTER i l 4 Finding: Category: 3 Trending capability is limited to four operator-selectable parameters on two strip-chart recorders which do not provide parameter identification or readout units capability. 3 Improvement: An engineering investigation of this problem will be initiated. The results of the study will determine the advisability and feasibility of any improvement to provide parameter identification. In addition, as stated in Item 3, the TSC computer terminal located in the control room provides additional graphic trending capability. Implementation: Long term study to be implemented in accordance with NUREG-0737. 4 162
6.9 PROCESS COMPUTER
- 5. Finding: Category: 3 The six analog indicators driven by the process computer do not have any. parameter identification.
Improvement: An engineering investigation of this problem will be initiated. The results of the study will determine the advisability and feasibility of any improvement to provide parameter identification. In addition, as stated in Item 3, the TSC computer terminal located in the control room provides additional graphic trending capability. Implementation: Long term study to'be implemented in accordance with NUREG-0737. l l
< l l
163
l 6.9 PROCESS COMPUTER
- 6. Finding: Category: 3 The computer accessible displays on the control boards do not have any parameter identification capability.
Improvement: An engineering investigation of this problem will be initiated. The results cf the study will determine the advisability and feasibility of any improvement to provide parameter identification. In addition, as stated in Item 3, the TSC computer terminal located in the cont'rol room provides additional graphic
~ '~ -
-~ --
trending capability. Implementation: Long term study to be implemented in accordance with NUREG-0737. i f 164 l
6.9 PRCCESS COMPUTER
- 7. Finding: Category: 3 The speed of the alarm logger / printer is limited to 30 characters /second.
Improvement: An engineering investigation will be initiated. The results of the study will determine the advisability and feasibility of any improvement to the computer line printer. Implementation: Long term study to be implemented in accordance with NUREG-0737.
+
165
6.9 PROCESS COMPUTER
- 8. Finding: Category: 2 The printouts are difficult to read. The printing is too light and lines are too closely spaced.
Improvement: The printer has a toggle switch which permits printouts to be single or double spaced. During transient or accident conditions, the output typers can be operated in the double space mode as deemed necessary by the operator. Light printing is caused by worn typing ribbons. The preventive maintenance schedule for the process computer
' will be changed to require more frequent changing of output typewriter ribbons.
Implementation: Implement prior to fuel load. 166
6.9 PROCESS COMPUTER
- 9. Finding: Category: 3 The lettering is too small on both the pushbuttons and the function map on the console.
4 Improvement: An engineering investigation will be initiated. The results of the study will dictate the advisability and feasibility of a modification to the pushbutton lettering and functional map. Implementation: . Long term study to be implemented in accordance with NUREG-0737. 4 167
> 6.9 PROCESS COMPUTER 1
- 10. Finding: Category: 2 The alarm acknowledge and the action buttons are next to er h other and have no coding to distinguish between them.
s Improvement: The alarm acknowledge pushbutton will be retrofitted with a colored collar, consistent with the color coding scheme, to distinguish it from the action pushbutton. Implementation: Implement prior to fuel load. t t 168 l l -- - . - .-. - _ . - . . _ . . ._ _ .. _ _ - _ _ _ _ _
6.9 PROCESS COMPUTER
- 11. Finding: Category: 2/3 Abbreviations used are not always consistent with the master list.
Improvement: A cross reference list will be developed to match the master abbreviation list with.the appropriate abbrevia-tion on the function map of the operator's console. Implementation: Implement prior to fuel load. Improvement: The upgraded computer will be equipped to use the Standard Abbreviation List. Implementation:
. Long term study to be implemented in accordance with NUREG-0737.
'l 4 169
6.10 DATA RECORDING AND RETRIEVAL
- 1. Finding: Category: 3 The twenty-four point strip chart data recorder has too high an information density to separate individual parameters.
s Improvement: l An engineering investigation will be initiated. The results of the engineering study will dictate the advisability and feasibility of modification or replace-ment for the twenty-four point recorders. Implementation: Long term study to be implemented in accordance with NUREG-0737. t l l 4 1 170
l l 6.10 DATA RECORDING AND RETRIEVAL i i 1
- 2. Finding: Category: 2 Recorders on the Radiation Monitor panels have no scale parameter names.
.i Improvement:
i Scale parameter names will be added to these recorders.
! Implementation:
Implement prior to fuel load. l l l l I 4 171
l l < l 6.10 DATA RECORDING AND RETRIEVAL l
- 3. Finding: Category: 1 l Calibration stickers obstruct the view of some recorder faces.
Improvement: Calibration stickers will be relocated in order that the view of recorder faces will be unobstructed. Recorder faces will be cleaned of extraneous material. Implementation: Implement prior to fuel load. 1
~.n 4
4 172
6.10 DATA RECORDING AND RETRIEVAL
- 4. Finding: Category: 2 l Many recorder charts do not have time references. They l do not give sufficient information to insure correct interpretation.
Imprdvement: Time reference chart paper will be provided for all control room recorders except those that have a fast / slow speed or are unly operating during designated time periods. The recorders that will not be equipped with time refer-ences are: Post Accident Monitoring System A 1B21-R623A Post Accident Monitoring System B 1B21-R623B - Computer Trend 1C91 R801 SRM Recorder 1C51-R602 IRM/APRM Recorder 1C51-R603A IRM/RBM/APRM Recorder IC51-R603C IRM/RBM/APRM Recorder 1C51-R603D IRM/APRM Recorder 1C51-R603B Computer Trend 1B 1C91-R801B Off-Gas Recorder 1AJR-0G009 Off-Gas Recorder 1FR-0G005 Off-Gas Recorder 1TJR-0G011 Implementation: Implement prior to fuel load. 173
i I 6.10 DATA RECORDING AND RETRIEVAL
- 5. Finding: Category: 1 A strip chart recorder was found that had paper with a different printed scale than the scale on the recorder.
! Improvement: Reco$ der labels will be marked to indicate correlation with pen color, and to ensure that chart paper with the correct scale is used. Implementation: Implement prior to fuel load. l l l i l l l I t 174 l L}}