ML20043E635
| ML20043E635 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 06/04/1990 |
| From: | Papanic G YANKEE ATOMIC ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9006130218 | |
| Download: ML20043E635 (21) | |
Text
-
e YANKEEATOMIC ELECTRIC COMPANY
"'Q"*?s*gy,'*;"l" 7
580 Main Street, Bolton, Massachusetts 01740-1398 June 4, 1990 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 References (a) License No. DPR-3 (Docket No. 50-29)
(b) Letter, NYR 87-062, USNRC to YAEC, " Detailed Control Room Design Review," dated March 24, 1987 (c) Letter, NYR 86-9, USNRC to YAEC, " Detailed Control Room Design Review (DCRDR) - Technical Evaluation Report "
dated January 13, 1986 (d) Letter FYR 88-118, YAEC to USNRC, " Detailed Control Room Design Review." dated August 26, 1988 (e) USNRC, " Meeting Summary - November 13, 1986 - Control Room Design Review" (f ) Letter, FYR 85-80, YAEC to USNRC, " Detailed Control Room Design Review Summary Report," dated August 1, 1985
Subject:
Yankee Nuclear Power Station - Detailed Control Room Design Review (DCRDR) Request for Additional Information Dear Sir During several recent telephone conversations, the last one on May 21, 1990 between Yankee Atomic Electric Company (YAEC), Mr. J. Bongarra (USNRC) and Mr. P. Sears (USNRC), it was requested that Yankee provide additional information to enable the staff to verify that the open items identified in References (b) and (c) have been or will be satisfactorily corrected.
Attachment A provides the additional information requested.
Attachment A provides an update to the information provided to the staff under Reference (d).
_ YAEC will update the staff via its annual 10CFR50.59 report of final resolution for the Human Engineering Deficiencies (HEDs) described in Attachment A as plant modifications are completed.
Resolutions which differ from the proposed actions in Attachment A will also be described as discussed with the staff during the aforementioned telecon.
/b
P h
United States Nuclear Regulatory Commission June 4, 1990 Document Control Desk Page 2 As YAEC discussed in its original submittal, Reference (f)..and the staff acknowledged in References (b) and (e), no HEDs had a safety significance such that the schedule for implementing HED corrections would be affected. None of the HEDs had adverse impacts which warranted immediate changes to the control boards.
In addition, YAEC's integrated approach to determining, verifying, and implementing design improvements has/will result in significant HEDs of various categorizations being integrated and corrected together. We believe the above clarifies this question to the staff's satisfaction.
l We trust that you will find this information satisfactory; however, should you have any questions, please contact us.
Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY Jr.
Senior Project Engineer - Licensing Yankee Project GP/gjt/WPP74/37-Attachments cc: USNRC Region I USNRC Resident Inspector, YNPS l
'o AfrAGEMNT A Ianket.ltamic_X1ectric_Cggeny Iankee Muclett Power Stating YMPS
- trol a - Damien tarview Status Isttal Pages - 19 I.
SIMBl&RY As of stugust 26, 1988, as documented by FYR 88-118 the YNPS Control Room Design Review (CRDR) status wast 309 findings listed 214 closed (69%)
95 open (31%)
At the completion of the 1990 refueling outage, the YNPS CRDR status will bet i
309 findings listed 242 closed (78%)
67 open (22%)
Findings that have been closed after the FYR 88-118 status update and those to be closed during the 1990 refueling outage ares
,s j
RCD Kev Nosa l
EDCR 86-310 (NI's) 4 106,100,402,168 l
EDCR 87-305 (CCTV) 1 405 EDCR 89-306 (MOVATS) 1 075 EDCR 89-309 (IST) 1 488 DUPLICATE HED FINDING - 1 514 (duplicate of 171)
ENVIRONMENTAL STUDY 2
435,436 FIRE PANEL 1
311 ANNUNCIATOR STUDY 4
037, 097, 183, 375 CRPI STUDY 1
149 i
PLT SR 86-164
- 12 558,167,546,434,523,522,440, (PROCEDURE) 556,450,457,487,313 TOTAL 28 WPP74/35-
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Findings that are presently open and scheduled for completion by the end of the 1992 refueling ottage aret j
RCD Kev Nos2 EQUIP MOD /RELOC 8
210,248,171.146,142,198.518,392 ANNUNCIATOR STUDY
- 27 377,376,378,382,036,186, 184.185,238,244,243,237,335, 370,389,379,360,372,374,373, l
239,320,371 1
380 PROCEDURE FIRE PANEL STUDY 4
298,314,300,312 ENVIRONMENTAL STUDY
- 10 127,085,259,549,428,408,524, 525,526,342 I&C NEEDS STUDY
- 20 235,096,134,191,209,234,266, 493.453,477,516,557,515,480,473, 474,466,464 TOTAL 67
- 11. ZINDDIGS Cla8ED POST FYR_88-118 The following findings have been closed after the FYR 88-118 updates HED No. :
1302 RCD No.: 0405 Corrective _ Action:
RCD No. 0405 concerns the noise and confusion created by the guard station located in the control room.
EDCR 87-305, " Security System Upgrade" has added a walled partition around the guard station.
RCD No. 0405 status is now closed. WPP74/35
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a IIED No.:
1410 RCD No.:
0514 i
Correctire_Actios
- RCD No. 0514 is a duplicate of RCD No. 0171 (HED No. 0500), see RCD No. 171 for corrective action.
RCD No. 0514 status is now closed.
HED No.: 0500 RCD No.: 0313 Cetrec. Lite _ Action
- RCD No. 0313 concerns controls of switches on the Fire Panel for bypass and initiating of fire protection function for the CREACS and Manhole #3 operation.
These switches are procedurally controlled by plant procedures OP-2604. -2702. -2709, -4561.
RCD No. 0313 status is now closed.
HED No.:
1302 RCD No.:
0434, 0435, 0436 Oorrective_Actioot RCD Nos. 04?4, 0435, and 0436 concern the provision te limit access or movement of authorized personnel in the control room. Plant procedures OP-2001. -2010 provide the Shif t Supervisor with the authority to limit personnel in the control room.
In addition there are signs posted outside the control room noting only authorized personnel are allowed in and signs within the control room route traffic.
RCD Nos. 0434, 0435, and 0436 status is now Closed.
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a HED No. :
1413 RCD No.: 0523, 0522 Correctirm_Ac. Lion:
RCD No. 0523 notes the procedure to vent the VC is extremely complex.
Plant procedure OP-2658 is long and is divided into 6 separate attachments (of which venting is one) for ease of use.
The attachment has been revised to improve operator understanding.
RCD No. 0522 concerns the location of the vent valves for VC venting.
The vent valves are operated at the Shif t Supervisor's diacretion from the control room.
RCD Nos. 0523, 0522 status is now Closed.
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HED No.:
1426 RCD No.: 0457 Correctiva_Actient RCD No 0457 concerns the method of determining shutdown margin from boron concentration as inconvenient to use. Plant procedure OP-4708 provides a step-by-step procedure, with graphs to determine the margin.
RCD No. 0457 status is now Closed.
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HED No.:
1419 RCD No.: 0440 C9Irtet1Ym_ Action:
RCD No. 0440 notes that there is no one place tnat all equipment out of service is listed. The finding is correct in that there is no single quick reference log of out of service equipment. However, it is not considered necessary based on the extensive logs kept by the operations department and could in fact overtax the operator or cause confusion from inconsistent log entries.
Plant procedure OP-2007 addresses the shift supervisor's log, which is a chronological notebook record of the significant events of the shift. All out of service safety related equipment would be logged here.
Plant _ procedure OP-2002 addresses the i
shift turnover, which requires that the control room operations staff review and sign the log sheets for the following logs:
- Plant Operating log
- Rofueling Log (when applicable)
- Temporary Change Request
- Special Order log 1
- Tagging Order Log
(
OP-2002 shif t turnover sheets also contains a separate list of degraded mode or off normal equipment that is reviewed by the control room operations staff. No further action is required.
RCD No. 0440 status is now closed.
HED No.:
1422 i
RCD No.: 0556 Corrective Action:
RCD No. 0556 noted that a procedure required a reading of MC pressure "below 850 psig".
This finding was applicable to the original Plant Emergency Operating Procedures (EOPs). However, the E0Ps have been totally rewritten thus voiding this finding.
The new E0Ps were reviewed l
l and accepted by the NRC as documented by SER dated October 3, 1990 (NYR 89-312) and NRC Inspection Report No. 50-029/89-80, dated L
February 16, 1990.
RCD No. 0556 status is now closed.
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T HED No.:
1428 RCD No.:
0487 Correctire_Actinct RCD No. 0487 concerns the time constraints of local operation of the steam driven feed pump. This finding was applicable to the original Plant Emergency Operating Procedures (EOPs). However, the E0Ps have been totally rewritten. The new E0Ps were reviewed and accepted by the NRC as documented by SER dated October 3, 1990 (NYR 89-312) and NRC Inspection Report No. 50-029/89-80, dated February 16, 1990.
RCD No. 0487 status is now Closed.
HED No.
1425 RCD No.:
0450 Corrective _ Action:
RCD No. 0450 concerns the time and personnel available to go to the bus room to manually open BK-1,2 and circuit 12.
This finding was applicable to the original Plant Emergency Operating Procedures (EOPs).
- However, the E0Ps have been totally rewritten. The new E0Ps were reviewed and accepted by the NRC as documented by SER dated October 3, 1990 (NYR l
89-312) and NRC Inspection Report No. 50-029/89-80, dated February 16, 1990.
RCD No. 0450 status is now Closed.
HED No.:
0701 RCD No.:
0558, 0167, 0546 CorrectiYe_Acilon i
l RCD Nos. 0558, 0167, and 0546 concern the possibility of interchanging l
indicator light lenses.
The indicator light position for control switches has been standardized in YRS-013. " Design Guidance for Human Factors Engineering of Control Room Equipment".
The indicator light bulbs are typically changed out by the control room operators.
Standard practice is to change out one bulb at a time, thus indicator light lenses l
would not be interchanged.
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RCD Nos. 0558, 0167, 0546 status is now Closed..
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HED No.: 0501 RCD No.: 0311 CorrectiYm_ Action:
RCD No. 0311 concerns bulb replacement not being easy.
The Fire Panel is standard vendor equipment which solders the bulbs in place. The Fire Panel has a lamp test feature, a toggle switch is depressed and the indicator lights will be activated. No additional action is required.
t RCD No. 0311 status is now Closed.
t HED No.: 0600 RCD No.: 0375 Correctiva.Actioot RCD No. 0375 concerns the use of first out or dual reset for high priority alarms.
A "first out" window grouping will not be provided since this function is adequately provided by the plant's sequence of i
events recorder.
RCD No. 0375 status is now Closed.
HED No.: 06A0 RCD No.: 0037, 0097, 0183 Corrective Actinn RCD Nos. 0037, 0097, and 0183 concern annunciator controls as not being well marked.
EDCR 86-326. " Human Factors Enhancements for Main Control Room Panels - Paint / Demarcation / Mimic / Meter Zone-Code / Color " has added a white color field around each group of controls to aid the operator in quickly identifying their locations.
RCD Nos. 0037, 0097, and 0183 status is now Closed.
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r HED No.: 05F0 RCD No.: 0174, 0203, 0550, 0227, 0260, 0294, and 0310 (This HED was documented as closed in YAEC Submittal FYR 88-118, dated August 26, 1988.
It is repeated herein as requested.)
CortschiYm A tion Failure Mode Study - Equipment manufacturers for panel indicators were contacted for information on four failure modest a.
Signal open b.
Signal short to ground c.
Signal short to 36 V de d.
Signal short to 120 V ac The study concluded that the manufacturer's data was complex and ambiguous, that there is no concise / conclusive information that can be provided as an operator aid.
To attempt to tabulate failure mode data would overtax the operator's memory and probably increase operator confusion. The operators will continue to use the information from redundant and diverse parameters to determine if a f ailure exists. No further action required.
HED No.:
1400 RCD No.:
0149 This finding reads as follows
" Control rod position lights are dim, and occasionally out.
Possible technical specification violation could result."
Correctita_ Action:
This control rod position indication (CRPI) problem has been a maintenance issue identified long before the Control Room Design Review deficiency was resolved.
The basic system design consists of the following: a stack of 30 transformer type coils (i.e., each has a primary and secondary winding) for each of the 24 control rods, and a series of 30 light-emitting diodes (LED) for each control rod.
Each LED represents 3 inches of rod motion.
A Technical Specification Limiting Condition for Operation (T.S. 3/4.1.3) is that all control rods shall be positioned within i 8 inches (indicated position) of every other rod in their group. This means that no more than two consecutive LEDs can be out (not illuminated) at any given time during plant operation. WPP74/35
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'e Within the-last.three years, several major changes have been or are being done to improve the overall system' operation. The Vapor Container Ventilation System Cooling Water System Piping has been chemically
. cleaned and the two ventilation heat exchangers have been replaced and two are being replaced.
A small number of CRPI coils have been typically replaced on a rotating basis.- During.the 1990 refueling, approximately 1/3 of-the total number of colle will be replaced with a coil of higher temperature rating.
During: subsequent refuslings, the coils will continue to be replaced on a rotating basis. Coil stack polarity problems were discovered and corrected during the 1988 refueling.
Since the work described above has been completed and the coils are being replaced on a rotating basis, this issue is considered a maintenance item' and the HED is considered closed.
RCD No. 0149 status is now Closed.
III. EIMDlHGS TD BELCLOSED_DY THE_C(EELEXIIELOF THE 1920 REFUELING DUT&GE
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The following findings will be closed out during the 1990 refueling i
outage:.
HED No.:
0100
[
RCD No.: 0106,0100 f
Corrective _ Action:
EDCR 86-310 " Nuclear Instrumentation (NI) Upgrade will replace the 7
existing NI panels and replace certain instruments / controls on the Main
[
-Control Board. The design change has been reviewed and meets the intent r
i of Specifications YRS-013." Design Guidance for Human Factors f
Enhancements of Control Room Equipment" and YRS-016. " Main Control Room
?
. Equipment Systems and Abbreviations".
I d=
RCD No. 0106 concerns indicating light location, these lights will be y
obsolete after the new NI panel is installed.
RCD No. 0100 concerns anthropometric limits of equipment, the existing panel will be obsolete
.="
after the new NI panel is installed.
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b HED No.
0500 RCD No.: 0402 CorrscLive.Aclion*
EDCR 86-310. " Nuclear Instrumentation (NI) Upgrade will replace the existing NI panels and replace certain instruments / controls on the Main Control Board. The design change has been reviewed and meets the intent of -Specifications YRS-013. " Design Guidance for Human Factors Enhancements of Control Room Equipment" and' YRS-016, " Main Control Room Equipment Systems and Abbreviations".
RCD No. 0402 concerns indicators with odd scale intervals, these power range meters will be obsolete after the new digital meters are installed.
HED No.:
1402 RCD No.: 0168 Correciire_ Action EDCR 86-310, " Nuclear Instrumentation (NI) Upgrade will replace the existing NI panels and repisca certain instruments / controls on the Main Control Board. The design change has been reviewed and meets the intent of Specifications YRS-013, " Design Guidance for Human Factors Enhancements of Control Room Equipment" and YRS-016. " Main Control Room Equipment Systems and Abbreviations".
RCD No. 0168 concerns power range meter gain adjustment knobs being too close together, these knobs will be obsolete after the new digital meters and gain adjustments controls are installed.
HED No.: 0500 RCD No.: 0075 Carr.ective ACLion:
RCD No. 0075 concerns the switch escutcheon plate nomenclature, EDCR 89-306, " Motor-Operated Valve Modifications" will replace the escutcheon g
plate and use open/close for position indication.
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HED No. - 1500.
RCD No.:
0488
- CorInc11Ye Action:
RCD No. 0488 concerns the location of a local pressure gauge, EDCR 89-309,"IST Instrumentation Upgrade" will relocate the gauge so it can be seen from the valve control station.
I IV. FINDINGS TO BE CLOSED BY THE CGIFLETI(El 0F THE 1992 nwUELING OUTAGE The following findings will be closed during the 1992 refueling outage:
HED No.: -0600 RCD No.:
0380 frogoted Corrective Actinn:
l RCD No. 0380 concerns how out-of-service annunciator windows are tagged with "not operating" stickers. Out-of-service annunciator alarm windows are covered by two plant procedures, AP-0018, " Temporary Change Request" i
and OP-0205, " Maintenance Request." These procedures will be revised to address the use of "not-operating" stickers.
1 1
t HED No.:
05A0 RCD No.:- 0127 Proposed Corrective Action:
RCD No. 0127 concerns equipment glare. An environmental study of the
. main control room was conducted by an independent human factors consultant and architectural firm team. The_ study confirmed the CRDR findings and recommended that the HVAC system, ceiling tiles and ceiling i
lights be replaced.
Yankee is presently refurbishing a building for the
-control room simulator which will have new lighting and HVAC systems.
Results of this effort will be utilized in the redesign of the main control room systems scheduled for implementation during the 1992 outage.
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HED No.s.'0800 RCD No.:
0085, 0259, 0342-Eroposed_Correctlya Action:
RCD Nos. 0085, 0259, 0342 concerns equipment glare. An environmental study of the main control room was conducted by an independent human factors consultant and architectural firm team. The study confirmed the CRDR findings and recommended.that the HVAC system, ceiling tiles and ceiling lights be replaced.
Yankee is presently refurbishing a building for the control room simulator which will have new lighting _ and HVAC systems. Results of this effort will be utilized in the redesign of the main control room systems scheduled for implementation during the 1992 outage.
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HED ht.:
0801 RCD No.: 0549 S
froposed_ Corrective Action:
1 RCD No. 0549 concerns equipment glare. An environmental study of the j"
main control room was conducted by an independent human f actors consultant and architectural firm team.
The study confirmed the CRDR findings and recommended that the HVAC system, ceiling tiles and ceiling lights be replaced. Yankee is presently refurbishing a building for the control room simulator which will have new lighting and HVAC systems.
Results of this effort will be utilized in the redesign of the main control room systems scheduled for implementation during the-1992 outage.
a HED No.: 0901 i
RCD No.: 0408, 0524 Eroposed_ Corrective Action:
L
_ RCD Nos. 0408 and 0524 concern equipment glare and control room light levels. An environmental study of the main control room was conducted by an independent human factors consultant and architectural firm team. The study confirmed the CRDR. findings and recommended that the HVAC system, ceiling tiles and ceiling lights be replaced.
Yankee is presently a
refurbishing a building for the control room simulator which will have new lighting and HVAC systems. Results of this effort will be utilized in the redesign of the main control room systems scheduled for implementation during the 1992 outage. WPP74/35 c
t e.
HED No.: 0902 RCD No.: 0525 h eposed Corrective Action:
RCD No. 0525' concerns the control room light levels. An environmental study of the main control room was conducted by an independent human factors consultant and architectural firm team. The-study confinned the CRDR findings and recommended that the HVAC system, ceiling tiles and-b ceiling lights be replaced. Yankee is presently refurbishing a building for the control room simulator which will have new lighting and HVAC systems. Results of this effort will be utilized,in the redesign of the main control room systems scheduled for implementation during the 1992 outage.
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HED No.: 0903 l
. RCD No.: 0526 l
[
hDPQaed Corrective Action:
RCD No. 0526 concerns the control room light levels. An environmental i
study of the main control room was conducted by an independent human factors consultant and architectural firm team. The study confirmed the CRDR findings and recommended that the HVAC system, ceiling tiles and ceiling lights be replaced. Yankee is presently refurbishing a building for the control room simulator which'will have new lighting and HVAC systems. Results of this effort will be utilized'in the redesign of the main control room systems scheduled for implementation during the 1992
' outage.
HED No.: 0900 RCD No.: 0428 h DDDaed Corrective Action
-RCD No. 0428 concerns the background noise level. An environmental study of the main control room was conducted by an independent human factors consultant and architectural firm team.
The study confirmed the CRDR l '
findings and recommended that the HVAC system, ceiling tiles and ceiling L
lights be replaced. Yankee is presently refurbishing a building for the
)
l control room simulator which will have new lighting and HVAC systems.
Results of this effort will be utilized in the redesign of the main-control room systems scheduled for implementation during the 1992 outage.
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HED No.: 0101 RCD No. : 0298 Eropome LCorrns.tiYm_Ac11on:
RCD No. 0298 concerns the anthropometric limits for the fire panel controls'in displays. A study was conducted to evaluate the HED findings and concluded that the fire panel should be relocated, the internal module layout rearranged, and the modules relabeled. This modification will be implemented during the 1992' refueling outage.
l HED No.:
06A0 RCD No.:
0300 T. reposed Corrective Actions.
RCD No. 0300 concerns the internal module layout arrangement. A study j
was conducted to evaluate the HED findings and concluded that the fire panel should be relocated, the internal module layout rearranged, and the 11 modules relabeled.
This modification will be implemented during the 1992 refueling outage.
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5 HED No.:
0501 RCD No.:
0314 fraponnLCorrective Action:
RCD No.-0314 concerns the. internal module layout arrangement. A study was conducted to evaluate the HED findings and concluded that the fire.
panel should be relocated, the internal module layout rearranged, and the 1 modules relabeled.
This modification.will be implemented during the 1992 refueling outage.
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HED No.: 06A0 RCD No. :
0312 Proposed Corrective Action:
I RCD No. 0312 concerns the internal module labeling. A study was conducted to evaluate the HED findings and concluded that the fire panel should be relocated, the internal module layout rearranged. and the modules relabeled. This modification will be implemented during the 1992
)
refueling outage.
l HED No.: 0100 l
l RCD No.: 0210
'l Ersaposed Corrective Actigst RCD No. 0210 noted that some equipment is outside the anthropometric l
guidelines.
j The specific equipment outside the guideline is:
I a.
Meters for Main Steam Turbine Throttle, First-Stage Turbine Shell
~
and Hydro Seal Oil - Mounted 83" to 89" above the floor.
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b.
Meters for' Gland Steam Leak-Off, High Pressure Gland Steam, Low l
Pressure Gland Steam, and Generator Hydrogen - Mounted 78" to 82" above the' floor.
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c.
Meters for Turbine Bearing 011, Turbine Initial Regulator Oil, Turbine Load Limit Oil. and Turbine. Speed Governor Oil - Mounted 70"
-to 76" above the floor.
i d.
Condensate Pump Trip Switch ' Mounted about 28" from the edge of the bench.
e.
Controls for turbine supervisory instruments located above 31" from the edge of the bench (on vertical section).
Items (a) through (c) - The meter numeral height is 1/4" and can be easily read by operators at the MCB.
However, these meters have used dynamo tape labels.(under the glass) to designate component identification and engineering units are not shown.
Item (d) - The switch, when taking into account' shoulder height, has an actual reach of'28" what is within the extended functional reach of the fifth percentile female (28.2"). !
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Item (c) - These controls are for turbine shaf t eccentricity, vibration.
cylinder expansion, and valve position speed.
The controls are typically l
1 eft in the run position, frequency of use is low.
Proposed Corrective Action - The dynamo labels will be removed under the.
general relabeling effort.
Engineering unit information necds to be added to the scale face.
HED No.: 0205 RCD No.: 0248-Zroposed_ Corrective Action:
RCD No. 0248 noted that placement of Battery No. 3 ground voltmeter is inconsistent with others.
The finding is correct.
In addition, it is felt that the 2400 V voltmeter and 480 voltmeter should be moved to enhance the display / control relationship.
Also, on CRDR Panel No. 10 (MCB Panel 9F), the display meters for circulating water pumps, condensate pumps, and heater drain pumps should E
be moved to enhance the display / control relationship.
The moving of indicators,is recommended over moving of controls to limit the possibility of inadvertent operation.
The proposed corrective action is:
l a.
Move Battery No. 3 ground voltmeter from each side of the L
synchroscope meters to below Battery No. 1 ground voltmeter.
.b.-
Move the 2400 V meter to the left of 2400 V bus voltmeter selector switches and demarcate.
c.
Move the 480 V meter to the right so that it lines up with the 480 V L
bus voltmeter selector switches on the bench board, d.
Move the display meters for circulating water, condensate, and L1 heater drain pumps so that they line up with their respective controls on the bench board section. The condenser back-pressure gauge will be. relocated on this panel as needed.
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HED No.: 0500 RCD No.: 0171 froposed_.Correc11YsLAction:
a RCD'No. 1071 noted that recorders-for LTOP recorder, pressurizer level.
i and digital indicator for LPST level do not show engineering units.
The recorder chart paper does show engineering units for LTOP and i
pressurizer level channels.
The LPST level is a digital meter, engineering units are missing, i
Proposed corrective action - Add engineering unit information to the LPST digital meter.
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HED No.:
05E2.
RCD No.:
0146, 0142 I
ZIngnand_Corre.clive Action:
)
RCD Nos. 0146-ano 0142 noted that Sigma indicators use setpoint lights differently.
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Sigma meters for SF-LIS-225A, and 224A (on the primary pumps control f
panel) have setpoint-lights on if pointer is between setpoints.
Sigma l
meters for DW-LI-230 ( on gravity drain transfer panel) have setpoint lights off if pointer is between setpoints. General operator preferences j
are to have setpoints off and then light if pointer goes outside the l
setpoint limits., Meter is Sigma 9262X zero-powered indicating y
alarm / controller.
1 The Sigma meters can be modified by moving the lights lead wire from the f
~
alarm points to the control points on the printed circuit boards.
I The proposed corrective action is - Modify meters for SF-LIS-225A, and
(
224A so that the setpoint lights come on only if pointer goes outside the setpoint limits.
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HED No.:
1405 i
RCD No.: 0198, 0518 i
Eroposed Corrective Action:
RCD Nos. 1098 and 0518 noted that LCV-220 and 221 controllers were 1
difficult to understand and that they were mounted 67" above the floor.
The mounting' height is within anthropometric guidelines. However, the open/close indication is confusing.
Proposed Corrective Action - Replace controllers with electroswitches and status. lights or with new control stations as determined by plant-l Operations Department and the required control scheme.
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-i HED No.:
1422 RCD No.: 0392 Eroposed Corrective _ Action:
RCD No. 0392 noted that additional indication for steam dump position and digital indication for MC pressure and level is needed.
The finding was based on operator. comments. The operator survey summary was reviewed for additional details.
The survey noted that operators wanted steam dump position indication for the condenser -- this has been added by EDCR'83-3 during the.1984 refueling outage.
The survey also noted that the operators wanted a larger scale-for MC pressure at low i
operating pressures and a meter indication of pressurizer narrow-range level (at present only on strip chart).
Increased resolution of MC pressure is needed for LTOP operation when starting up from cold shutdown. The operators transition from low to high when T = 380'F and P = 450 psi, but must maintain pressure (prior to this transition) between 400 psi and 450 psi per OP-2100.
Eroposed CorrectiYn_ Actions:
1.
EDCR 89-305, " Reduced Inventory Operation and E0P Instrument Changes," will add a new narrow-range pressurizer pressure indicator with a range of 0 - 1,000 psig during the 1990 Refueling outage.
This will provide the Control Room operators with a more accurate measurement of MC pressure during reduced pressure operation.
2.
Add a new indicator for pressurizer narrow-range level. WPP74/35 c
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l HED No.: 0600 and-06A0 RDC No.: 0377, 0376, 0378, 0382, 0036, 0186,'0184, 0185, 0238, 0244, 0243, 0237, 0335, 0336 0370, 0389, 0379, 0360, 0372, 0374, 0373.-0239,.0320, and 0371 Ernposed_Correctire_ Action
- Revised annunciator window layouts will be implemented to resolve the problems prioritizing, abbreviating, inconsistent type size, numbering, and clearing.
The revised layouts will be " test implemented" on the Yankee Plant Simulator to verify operator performance and acceptance. The revised layout will be based on the impact the alarmed condition has on plant operation and safety. All windows will be renumbered left to right. All windows will be re-engraved for consistency.
HED No. : 0500 and 0501 RCD No. : 0493, 0453, 0557, 0477, 0516, 0515, 0474, 0473, 0480, 0235, 0466, 0464, 0262, 0492, 0096, 0134, 0209, 0191, 0234, and 0266 frgposed Corrective Action:
These findings originated-from a task analysis (I & C Needs Study) done by the original CRDR team using the emergency operating procedures (EOPs) that were in use at the time.
'Since that time, 1985, YAEC has implemented new E0Ps, as required by TMI action items. -The new E0Ps are based on the Westinghouse Owners Group Emergency Response Guidelines.. During the verification and validation phase.of the E0P: development, a task analysis was performed, including an instrumentation' and control (I & C) needs study. The identified discrepancies from the task analysis were resolved prior to the implementation of the E0Ps. A post-implementation inspection and walkdown of E0Ps was performed by the NRC and it was found and documented (Inspection Report No. 50-029/89-90, dated February 16, 1990) that the n
E0P: implementation program was excellent.
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'However, the findings identified by the original CRDR effort will be l
resolved by comparing each switch escutcheon and handle to a
!L plant-specific guideline for pumps, valves, and breakers, etc. Handles, L'
' escutcheons, and each switch function will be similar in shape and l:
wording.
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