ML20206U842
| ML20206U842 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 06/30/1986 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Rubenstein L Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20206U848 | List: |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737 85-268C, NUDOCS 8607110168 | |
| Download: ML20206U842 (22) | |
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VINGINIA ELucTHIC AND POWuH COMI%NY Hicunown,Vinoix A ununt W.L.STEWANT Vaca l'azusonwr wmm. oPERATMNN Jggg }Q, {hhh Mr. Harold R. Denton, Director Serial No. 85-268C Office of Nuclear Reactor Regulation E&C/TLG/ hts:
Attn: Mr. Lester S. Rubenstein, Director Docket Nos. 50-338 PWR Project Directorate No. 2 50-339 Division of PWR Licensing - A License Nos. NPF-4 U. S. Nuclear Regulatory Commission NPF-7 Washington, D. C.
20555 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNITS 1&2 CONTROL ROOM DESIGN REVIEW FINAL SUM 4ARY REPORT As delineated in our Control Room Design Review (CRDR) Program Plan submitted to you in accordance with NUREG-0737 Supplement 1 on March 1,1984, Serial No. 087, and as revised by the comments provided to us in the Results of In-Progress Audit on January 8,1985, we have performed a human factors engineering review of the North Anna Power Station Units 182 Control Room i Enclosed is (1) cur Final Summary Report, Volumes 1&2, documenting the approach, the process and the results of this review and (2) our Proposedi Corrective Actions and Implementation Schedule, Attachment I, defining the-proposed corrective actions to be taken as a result of the program.
Selection of the proposed corrective actions was a complex process that considered the inter-relationship with and between other ongoing Virginia Electric and Power Company programs, such as installation of a Safety Parameter Display System, operator training, instrument upgrade per Regulatory Guide 1.97, Emergency Operating Procedures Revision 1 upgrades, etc.
In addition, those corrective actions determined to be " safety significant" were reviewed for cost effectiveness and feasibility of installation on a conceptual design basis.
The result of the total program review is the list of proposed corrective actions provided in Table FSR-1 of Attachment I to this letter. However, if during the development of the detailed design it is determined that a proposed corrective action is not cost effective or feasible as originally believed, it may become necessary to develop alternative corrective actions.
These alternative corrective actions will be reviewed and assessed in accordance with the Nuclear Design Control Program, which incorporates the same guidelines used in our CRDR review process.
Y 8607110168 860630 dg$
PDR ADOCK 05000338 Ny ff[p P
Mr. Harold R. Denton 2
Please note that the proposed corrective actions identified in Table FSR-1 of Attachment I are for the " safety significance" HEDs and that no corrective actions are included for HEDs without " safety significance." Poten+.ial corrective actions for HEDs without " safety significance" were 1dertified by the CRDR Project Team and can be found in Volume 2 of cur Final Summary Report. These potential corrective actions will be reviewed as part of the normal Virginia Electric and Power Company program for plant improvements.
Very truly yours, i
tt W. L. S ewart 6
Attachments
- 1) Proposed Corrective Actions and Implementation Schedule, Attachment I (6 copies)
- 2) Final Summary Report (6 sets - 2 Volumes / set) cc:
Dr. J. Nelson Grace Regional Administrator NRC Region II Mr. J. L. Caldwell NRC Senior Resident Inspector North Anna Power Station i
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ATTACHMENT I SERIAL N0. 85-268C CONTROL ROOM DESIGN REVIEW FINAL SUPMARY REPORT NORTH ANNA POWER STATION UNITS 1 & 2 INTRODUCTION The objective of the review and assessment phases of the Control Room Design Review (CRDR) was to identify ways to " improve the ability of the nuclear power plant operator, to prevent or cope with accidents if they occur by improving the information provided to them." This process involved collection, reduction and analysis of data pertaining to the adequacy of the control room design from a human factors perspective.
This was followed by an assessment of the human engineering discrepancies (HEDs) identified in the process.
REVIEW PHASE The review phase of the CRDR was comprised of the following four activities discussed in the Final Summary Report (FSR),- Volume 1:
i 1.
A review of normal, abnormal and emergency operations experience through interviews and document reviews (FSR Chapter 2).
2.
A control room survey associated with normal, abnormal and emergency operations to identify deviations from human factors principles (FSR Chapter 3).
pp.
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1 3.
A system functions review and task analysis of emergency operations (FSR Chapter 4).
4.
A task verification and validation of emergency operations (FSR Chapter 4).
ASSESSMENT PHASE The assessment phase of the CR9R was comprised of the following three activities discussed in Chapter 5 of the Final Summary Report, Volume 1:
1.
Review and confirmation of the HED.
2.
Assessment of the HED against three criteria:
the potential for error, the consequences of error and the safety importance.
3.
Assignment of a category / priority rating to the HED.
The individual HEDs were organized into the following three groupings by category and priority as follows:
Group A classification was assigned if three (3) out of three (3) criteria were judged high.
Group B classification was assigned if two (2) out of three (3) criteria were judged high.
Group C classification was assigned if one (1) out of three (3) criteria were judged high.
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REVIEW 0F SAFETY SIGNIFICANT HEDS AND j
THE IDENTIFICATION OF THEIR PROPOSED CORRECTIVE ACTIONS I
Within each category / priority group the HEDs with common potential corrective actions were collected. The Group 'A' HEDs and Group.'B' HEDs with high safety importance were identified as the HEDs with " safety significance". Both Engineering and Operations Management reviewed the potential corrective actions for these safety significant HEDs. These reviews included preliminary feasibility studies, preparation of budgetary cost estimates and cost-effective l
evaluations.
In cases where Management's review questioned the viability of l
i the HED Assessment Team's evaluation of an HED, the HED was returned to the j
Team for re-evaluation.
Table FSR-1, provides a description of the proposed corrective action, along with the associated HEDs which are addressed by that action.
Justification is provided where the proposed corrective action is anticipated not to fully correct the HEDs. However, in some cases, the extent to which a corrective i
action will fully correct an individual HED within a grouping cannot be determined until tne development of the final engineering design.
The proposed corrective actions in Table FSR-1 identify the current scope.
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4 IMPLEMENTATION PLAN i
f i
i The proposed corrective action. for HEDs with " safety significance" fall into five implementation categories:
immediate, short term, long term, normal I
program and no action.
i Immediate (I) Corrective Actions (0-2 Years) l 1
Thirty-four (34) proposed corrective actions were identified for HEDs which t
could be corrected by simple enhancements, procedure revisions and/or i
I I
1 training. There were also some extensive corrective actions that have been i
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incorporated into design changes that were in progress for other programs.
2 At this time, the majority of these immediate corrective actions are in
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progress or complete.
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l Short Term (ST) Corrective Actions (0-4 years) i
?
l Thirty-six (36) proposed corrective actions were identified for HEDs which l
could be corrected by short term actions (enhancements, major procedure j
}
revisions, and design changes).
(
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t Long Term (LT) Corrective Actions (0-8 years) l l
Two (2) proposed corrective actions were identified for HEDs to be j
corrected by complex or interrelated design changes.
The exact scope of 4
j these changes is dependent upon the development of design alternatives and l
i
{
further evaluation of the impact of design changes associated with other j
programs (e.g. R. G.1.97, SPDS, computer upgrade, etc.).
pp. 4 of 20 l
L i-4
.-.m
tm Normal Program (NP)
Nineteen (19) proposed corrective actions were identified that were not currently cost-effective and/or required space that is not available under current conditions. These corrective actions could become cost-effective and implemented at a later date if the need arises for a design change in the same area or on the same equipment or if the necessary space becomes available.
I No Action (No)
Two (2) proposed corrective actions were identified for HEDs with " safety significance" where there is no feasible or cost-effective corrective action.
In these cases, a justification is provided. These changes could possibly be made given the freedom of a new plant design, but the constraints of existing equipment in an operating plant make the costs of a corrective action high compared to the potential benefits.
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SUMMARY
The final implementation schedule for individual proposed corrective actions will vary with the availability of resources (including work time and space in the control room) and the complexity of the final corrective action. Table FSR-1 provides a summary of the safety significant HEDs with the proposed corrective actions and proposed implementation schedules.
Please note that as specified in Paragraph g, Section 5.2 of Supplement 1 to NUREG 0737, the scheduled durations identified in Table FSR-1 will begin after the NRC has issued an SER and any open issues are resolved.
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ATTACHMENT 1 TABLE FSR-1 SERIAL NO. 85-268C TABLE FSR-1 CONTROL RDWFDESTM REVIEWS FINAL SUpWEARY REPORT NORTH ANNTPDUEIF5TATT0FUNITS 1 AND 2 SUfetARY OF PROPOSED CORREr.TIVE ACTIONS AND IPFLEMENTATION SMEDULE PROPOSED CORRECTIVE PROPOSED IMPLEMENTATION SCHEDULE ACTION RESPONSIBILITY I
(0-2 yrs)
ST (0-4 yrs)
LT (0-8 yrs)
NP No Total ENGINEERING STUDIES AND DESIGN CHANGES 18 34 2
10 2
66 NON-DESIGN CHANGES 13 2
0 9
0 24 (OPERATIONS)
TRAINING 3
0 0
0 0
3 TOTAL 34 36 2
19 2
93 I
The total number of Corrective Actions per the listing is 80. The total number of Corrective Actions listed in this Summary is 93.
The additional 13 in the Summary represents the implementation of the study recommendations.
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ATTACHMENT I TABLE FSR-1 SERIAL NO. 85-268C
-TABLE FSR-1 CONTROL RUNFDISTGN REVIEW FINAL SUMARY REPORT NORTH ANNTlWER 5TATTUN IllITTS 1 AND 2 PROPOSED TURK SCHEDULE CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CA1E Perform study to address high ambient ST/ST 10000012 noise in control room; limit control 10000005 room access and investigate other noise 10A02901 reduction techniques and implement recommendations.
Adjust alarms to be 10 DB(A) above ambient noise level.
CA2E Conduct study to identify I/ST 10000505 communication systems problems and 10000202 implement recommendations.
10000203 10000204 10000205 10000206 CA3E Rescale Auxiliary Feedwater flow ST 10002241 indicators (linear 0-500 GPM increments of 10 GPM).
Coordinate with CAllE (10A02272).
CA4N Provide step-stool and use existing I
10A02021 strip chart recorder for determining Condensate Storage Tank level.
Coordinate with CA38N (10A02023).
pp. 8 of 20
CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CASE Rescale RCS wide range and narrow ST 10A02022 range range indication, provide proper 10A01201 unit progressions, and relocate 10A02025 to benchboard.
10A02244 12A02264 12A02033 CA6E Provide Total Bypass Feedwater flow NP 10A02045 indication (0-2000 GPM).
CA7E Provide Steam Feed Flow narrow range No 10A02208 This CA is not cost beneficial.
indication.
10A02253 However, Virginia Electric and Power Company is a participant in the Westinghouse Owner's Group effort that is addressing reduction of reactor trips at lcdt power which is the root cause of these HEDs.
CA8E Rescale containment pressure indication I
10A02215 to read 0-65 PSIA and mark atmospheric pressure point on scale.
CA9E Investigate replacement of existing ST 10A02216 multiscale recorder with more reliable 10A02209 and accurate narrow range recorders for waste gas 0 and H indication andimpleme$treco$mendation.
CA10E Provide individual flow recorders ST 10A02263 for Vent Stacks A and B.
Coordinate with CA78E (12A02417).
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CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CAllE Provide meter for Total Auxiliary ST 10A0227E Feedwater flow (0-1500 GPM).
Coordinate with CA3E (10002241).
CA12E Provide direct valve position ST 10A02274 indication with RED / GREEN lights for Pressurizer Spray Valves.
CA13E Relocate Casing Cooling components to ST 10A02402 Safeguards Panel.
CA14E Perform study of Annunciator Alarm System ST/LT 10A02911 a
and implement upgrades as necessary 10A02106 10A02107 10A02304 10A02905 10A02912 10A02916 12A02109 12A02111 12A02112 12A02113 i
12A02114 12A02115 12A02116 12A02117 12A02118 12A02119 12A02121 12A02918 10A01001 10A01002 pp.
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CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CA15N Provide step stools to aide in operation I
10A03001 of Radiation Monitoring Panel controls.
12A03034 Coordinate with CA38N (10A02023).
CA16E Provide Steam Generator narrow range No 10A03004 Addition of the trend recorder level '. end recorder on benchboard.
10A02024 is not feasible due to physical limitations and the unavailibility p
of qualified recorders to fit into the limited space.
Action being taken against CA7E will address these HEDs.
(See justification note).
CA17N Emphasize in training plant convention I
10A03015 for all process controlling.
CA18E Relocate Auxiliary Steam controls NP 10A03024 and Main Steam indication to allow easier and more convenient operation.
Coordinate with CA79E (12A03036).
CA19E Relocated trend recorder for VCT Blender NP 10A03028 Flow to provide better functional 10A02026 arrangement with associated display.
CA20E Replace handles on Pressurizer ST 10A03031 Heater control switches with handles distinctively different from Charging Pump breaker switches.
CA21E Replace existing RTD Bypass flow I
11A03205 indicating switches with transmitters that provide indication outside containment.
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T CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CA22E Selectively rearrange indication on ST 12A02039 Auxiliary Shutdown Panel.
CR23E Modify EDG Kilovar, Kilowatt and RPM ST 12A02040 indication on EDG panels to improve viewing.
CA24E Perform study to identify methods.
ST/NP 10000007 i
to correct control room glare / lighting 10000003 problems and implement recommendations.
10000009 10000010 t
CA25E Provide incore thermocouple readings ST 10002240 on ERF computer.
CA26N Develop and implement program addressing I
10002903 nuisance alarms.
12A02920 CA27N Ensure procedures for plant operation are I
10004002 legible per Administrative Procedure 5.4 and typed when possible.
CA28N Provide RCP Bearing Temperature readings ST 10A01004 on Plant Process Computer.
CA29E Perform labeling study to determine ST/NP 10A01101 labeling needs and concerns of 10A01102 Operations.
Relabel boards to 10A01103 0700 guidelines and implement 10A01107 recommendations.
10A01109 10A03007 10A02008 12A01110 12A01111 12A01112 12A01114 l
12A01115 pp.
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CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CA29E
" Continued" 12A01116 12A01117 12A01119 12A01120 12A01121 12A01122 12A01123 12A01124 12A01125 12A01126 12A01127 12A01128 12A01129 12A01132 12A01133 12A01134 12A01135 12A01136 12A01137 12A01138 12A01139 12A01140 12A01141 12A01142 12A01145 12A01146 12A01147 12A01209 12A01317 12A02028 12A02222 12A02306 i
12A02305 12A02308 t
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l CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED j
CA30N Upgrade Administrative Procedures for I
10A01105 placing and removing system tagout 12A01155 stickers.
CA31E Exchange Service Water temperature ST 10A01108 and flow indication scales to agree with board labels / location.
CA32E Provide single manual actuation I
10A01208 on benchboard to isolate all 3 main steam lines simultaneously.
CA33N Change color of meter pointers to NP 10A02003 red for improved visibility.
CA34N Develop a program to provide calculations I
10A02007 for station curves and impleaent accordingly.
CA35E Perform study to evaluate installing ST/LT 10A02012 status indication for transmitters on steam generator PORVS and implement recommendations.
CA36N Repair Condensate Tank level bar graph ST 10A02013 indicators to correct unnecessary flashing.
CA37E Perform feasibility study for ST/NP 10A02016 relocating RCS wide range temperature trend recorders higher on vertical board and implemert recorrnendations.
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CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CA38N Provide step-stools for less critical I
10A02023 displays located above 70 inches on vertical boards. Coordinate with CA4N (10A02021) and CA15N (10A03001).
CA39E Rescale Reactor Coolant Pump seal leak-off ST 10A02027 indication and make linear.
10A02250 CA40E Relocate annunciator Silence and ST 10A02105 Acknowledge pushbuttons to front 10A03401 edge on both benchboards.
Provide guards for Test and First-Out reset pushbuttons.
t CA41E Rescale Service Water Return Header flow I
10A02201 indication to linear.
CA42E Rescale Component Cooling Water I
10A02202 Pump Discharge Pressure indication (0-150 PSIG).
CA43E Rescale Component Cooling I
10A02205 Water flow indication to read 0-10,000 GPM.
CA44E Provide primary system fill and vent ST 10A02234 control indication (stand pipe).
10A02270 CA45E Provide verification of RCS ST 10A02236 natural circulation on ERF computer.
CA46E Change Charging Flow I
10A02242 indication (linear 0-200 GPM).
10A02001 Coordinate with CA50E (10A02249).
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CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CA47E Investigate the rescaling and I
10A02245 relocation of the RWST level narrow 12A02038 range indication.
CA48T Train operators in use of potentiometers I
10A02246 for steam dump controller.
CA49N Upgrade curve book curve for Casing I
10A02248 Cooling Tank level.
CA50E Change Letdown Flow indica-I 10A02249 1
tion (linear 0-200 GPM). Coordinate 10A02001 with CA46E (10A02242).
i CA51E Perform engineering study to I/NP 10A02252 evaluate random variations in i
j displays for Service Water flow indication. Coordinate implementation with Service Water Improvement Projects.
CA52E Perform engineering study to I/ST 10A02254 evaluate random variations in RHR flow indication and implement recommendations.
CA53E Perform engineering study to I/ST 10A02257 evaluate random variation in Component Cooling Water flow indication and implement recommendations.
i CA54E Provide Main Steam Code Safety I
10A02266 Valve position indication in control room, l
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i CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CASSE Investigate changing circuitry so ST 10A02302 valve position indicating lamp is on for "0 PEN" on Accumulator Discharge Valves and implement recommendation.
CA56E Rearrange panel Permissive and Status ST 10A02303 1
light engrave tiles so "0N" is always "G0" and remove "NO-G0" Permissive tiles.
CA57N Replace existing trend recorder door NP 10A02403 with clear plexi-glass door.
12A02037 CA58N Investigate use of cartridge NP 10A02404 type pens and install in trend recorders where feasible.
CA59N Replace recorders on Turbine NP 10A02405 Supervisor Panel.
CA6ON Prepare and initiate Preventative NP 10A02406 Maintenance program, including test criteria for trend recorders.
CA61N Replace strip chart impact recorders NP 10A02407 for Radiation Monitoring 10A02408 with recorders which print more distinguishable and on demand.
CA62N Repair Sampling System trend recorder.
I 10A02416 Replace if unable to repair.
CA63E Investigate replacement of existing I/NP 10A02701 i
analog Control Rod Position Indication System and implement recommendations, pp.
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1 CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION 5 PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CA64E Perform study to evaluate Main Feed-I/ST 10A02908 water Pump Low Suction Pressure alarm setpoints for adequacy of response time and adjust for closer tracking of out-of-tolerance alarming conditions.
CA65N Provide clear plastic flip-up covers on I
10A03006 Main Condenser Vacuum breaker.
CA66T Train operators to NOT put I
10A03010 Station Service TraliiTer switches in pull-to-lock position.
CA67N Institute acceptance testing NP 10A03013 prograns for potentiometers.
CA68E Relocate RHR Manual Bypass riow ST 10A03026 control to benchboard next to Main Steam NRV controls.
CA69T Train operators on simulator in I
10A03040 use of Letdown Low Pressure Control.
CA70E Provide sound powered phone jack NP 10A07101 connunication capabilities in turbine building basement and mezzanine.
CA71N Ensure timely review of visi-file I
12004003 containing annunciator response procedures and abnorral operating procedures.
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CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR ACTION
- PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED t
CA72E Investigate arrangement and I/ST 12A01306 demarcation of Auxiliary 10A03209 Ventilation Panel and implement 12A03035 recommentations.
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CA73E Rearrange in correct A, B, C sequence I
12A01311 the top two rows of the Vital Bus Status lights.
CA74E Perform layout improvements of ST 12A01316 the Safety System Trip / Reset Controls 10A03016 and provide separate controls for SI Reset / Block.
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CA75N Rescale meters and recorders NP 12A02029 identified, to comply with guidelines.
l CA76E Arrange annunciator controls on backboards ST 12A02110 j
to same configuration as benchboards (location coding). Also provide i
cover / cap for Test pushbutton.
CA77N Replace display faces having extraneous NP 12A02221 information which interfere with safe operations.
l CA78E Relocate lower Process Vent Stack A and ST 12A02417 8 flow recorders. Coordinate with CA10E (10A02263).
CA79E Relocate Turbine First Stage Pressure NP 12A03036 i
selector switch higher on vertical t
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board. Coordinate with CA18E (10A03024).
}
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CORRECTIVE ASSOCIATED JUSTIFICATION FOR PARTIAL OR
+
i ACTION #
PROPOSED CORRECTIVE ACTION SCHEDULE HEDS NON-CORRECTION OF HED CA80N Revise list of abbreviatiors/
I 12A03404 acronyns to include all abbreviations /
acronyms used on labels, annunciators and legends.
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