ML20136J347
| ML20136J347 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 12/27/1985 |
| From: | ESSEX CORP. |
| To: | |
| Shared Package | |
| ML20136J319 | List: |
| References | |
| NUDOCS 8601130335 | |
| Download: ML20136J347 (40) | |
Text
CONTROL ROOM DESIGN REVIEW SUPPLEMENTAL REPORT I HOPE CREEK GENERATING STATION Prepared for:
Nuclear Regulatory Commission Prepared by Essex Corporation for:
Public Service Electric & Gas Company December 27,1985 8601130335 860109 PDR ADOCK 05000354 PDR
TABLE OF CONTENTS Page
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1.0 INTRODUCTION AND BACKGROUND
1 1.1 Scope of the Supplemental Report 1 1.2 Management and Staffing 3 1.3 Methodology 3 1.4 Organization of the Supplemental Report 3 2.0 METHODOLOGY 4 2.1 Task Analysis Update 4 2.2 Verification of Component Characteristics 8 2.3 Survey of the Plant Computer System 10 3.0 IMPLEMENTATION SCHEDULE FOR DESIGN SOLUTIONS OF 11 HEDs FROM COMPUTER SURVEY AND VERIFICATION ANALYSIS APPENDIX A - MODIFICATIONS TO PROGRAM PLAN AND A-1
SUMMARY
REPORT APPENDIX B - REVIEW FINDINGS B-1 B.1 Review of CRIDS B-2 B.2 Review of SPDS B-13 B.3 Component Verification B-20 l
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1.0 INTRODUCTION AND BACKGROUND
This Supplemental Report presents the results of tasks performed for the Hope Creek Generating Station (HCGS) Control Room Design Review (CRDR) since the
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submission of the CRDR Summary Report to the NRC on August 6,1984.
1.1 Scope of the Supplemental Report During the preimplementation audit of the CRDR conducted November 13 to November 15, 1984, Public Service Electric and Gas made several commitments to the NRC regarding the HCGS CRDR. These commitments are described in a letter to the NRC from PSE&G dated December 6,1984. The tasks and the HCGS response to them are summarized below.
1.1.1 Task Analysis
- a. Update task and function analysis forms incorporating plant specific, finalized Emergency Operating Procedures (EOPs).
Response: The task analysis has been updated to Revision 0 (Zero), the most recent revision of the procedures. This task is described in Section 2.1 of this report.
- b. Define the characteristics of all instruments and controls needed to implement the EOPs.
Responsa: The required component characteristics were defined for the informa$on and control capabilities required to execute the EOPs. This task is described in Section 2.1 of this report. After the characteristics were defined, the presence or absence of components with required characteristics for the control room was verified. This task is described in Seed.on 2.2 of this report.
- c. Include complete HED references on the task analysis forms.
Response: The updated task analysis forms include the HED references.
1.1.2 Surveys Address outstanding survey items and provide the results to NRC. The surveys include:
o HVAC o Illumination o Emergency Equipment o Communication o Plant Computer System 1-
Operator interviews and the Ambient Noise Survey are to be provided in Supplemental Report II no later than six months af ter Fuel Load.
Response: The survey of the Plant Computer Systems has been completed and is described in Section 2.3 and in Appendix B of this report. The HVAC, Illumination, Emergency Equipment, and Communi-cation Surveys will be completed pending completed installation of the HVAC, Illumination, and Communication system and provision of the Emergency Equipment. The results of these surveys will be included in Supplemental Report II along with the Operator Interviews and Ambient Noise Survey.
As noted in the Summary Report (page B-34), back panel 10C604 (Radiological Monitoring System) had not been installed at the time of that report. Since this panel has now been installed, but not soon enough to complete the review for this report, the results of that review will be provided in Supplemental Report II.
1.1.3 Design Change Packages (DCPs)
Review Human Factors aspects of the Design Change Packages prior to their implementation.
Respanse: All DCPs resulting from CRDR HEDs have been reviewed for human factors concerns. A DCP addresses one or more related HEDs and describes specific modifications to the control room in sufficient detail to provide a completed installation. The DCP is prepared by the architect engineer and then submitted for human factors review. The review process, which is based on NUREG-0700 criteria, examines the document describing the proposed HED correction and provides feedback concerning the degree to which the relevant human engineering criteria are satisfied. The primary concerns in this analysis are whether (1) the l discrepancy being addressed has been satisfactorily resolved, and (2) If i
the correction introduces any new HEDs or other concerns.
1.1.4 Review Implemented DCPs Review as-built condition of the DCP modifications to ensure that the DOPs have been properly implemented.
Response: This review is yet to be completed pending installation of all DCP modifications. All DCP modifications will be installed prior to Fuel Load. The results of the review of the modifications will be included in Supplemental Report II.
1.1.5 Amend Two HEDs Amend HED A69 and HED A140 to address NRC concerns expressed during the November audit.
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Response: HED A69 has been amended to show that a study will be performed on zone marking needs. A report of the results will be issued to NRC one year after fuelload. HED A140 (tagging) has been amended to show that the plastic covers used during tagging are a part of the tagging procedure.
1.2 Management and Staffing Changes made to management and staffing since the Summary Report are described in Appendix A.
1.3 Methodology The methodology described in the Hope Creek Generating Station CRDR Program Plan and the CRDR Summary Report applies to this Supplemental Report. Additional methodology is described in Section 2.1 for the Task Aaalysis Update process and the Verification of Component Characteristics.
1.4 Organization of the Supplemental Report This report is organized similarly to the Summary Report referred to above. Section 2.0 describes the methodology for this work. Section 3.0 describes the implementation schedule for the design solutions of HEDs described in this report.
There are two appendices. Appendix A describes changes in CRDR management and staffing and a change regarding Documentation. Appendix B contains a summary of the HEDs generated since the completion of the Summary Report.
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2.0 METHODOLOGY 2.1 Task Analysis Update The task analysis update built upon the earlier analysis described in the HCGS Summary Report submitted in October of 1984. The update involved definition of additional operation action requirements and information and control needs, based on new data resulting from the EOP development program.
2.1.1 Objectives The objectives of the task analysis update were:
o To document any new needs for operator information and control capabilities introduced by further revisions to the EOPs since the initial task analysis was performed.
o To specify detailed component characteristics necessary to satisfy operator information and control needs for all tasks required to implement the EOPs.
2.1.2 Process
Update of Task Analysis Elements The update process required that each EOP be reexamined for any modifications introduced as a result of the EOP development program. The procedures addressed are listed in the previously submitted Summary Report (Section 2.2). The update process entailed the inspection of each block or " step" in the flowchart EOPs to determine if the action elements represented by the step, or the step sequence in the flow, had been changed. Changes were documented on a Task Analysis Update Form (see Figure 2.1). On this form, each step of the revised flowchart was listed in the left column labeled
" Updated Form." The corresponding number of the original flowchart step was placed in the column labeled " Existing Form" unless a new step was added. Explanatory notes were l recorded in the " Comments" column. Original steps that had been eliminated were l-Indicated as N/A at the bottom of the list.
After the changes were documented, the effects of each change on task action requirements were analyzed. This was done by personnel with operations und human factors expertise from HCGS's human factors contractor for the HCGS CRDR. (The team performing the task analysis update consisted of the same personnel who performed the original analysis.) References included the plant specific technical guidelines for emergency response and plant system description documents, as well as the original and l
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PAGE $ OF d TASK ANALYSIS UPDATE FORM HOPE CREEK GENERATING STATION PROCEDURE TITLE: 3eAckar- ressure dessel (R ?V') Cow-f~rol PROCEDURE NUMBER: Of- Eo EY Iol Q CORRESPONDING PROCEDURE STEP NOs.
COMMENTS UPDATED EXISTING FORM FORM Rc/q -s s 59 SC/Q-34 60 up Jded 6,%d q.et.o~ g 3 ,, h c.k. 3 ,a r , o x
,%d goiko, ins.r b ck . 3,J ro e2 Rc/Q-35 53 wedd,d E l '7 BC/Q - 34 Sc/Q - 37 iq g g g4,,,J d. e a lJed to n g ie y J d . d fe m
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Rc/Q 38 18 di Rc/Q- 39 .
Rc/q- 40 23 9ClQ-% Ao Rc/ o- 9 A a '/ ,
35 RCl L- l Rc/L N/A - t4ea Shf
- dd' % u f d'Y'd fo"^
Rc/t- 3 34 or,, / u. , d "TA i RC/L-4 37 up d.f,141;d. wL,. of -i2.9 " Ed stq f '
RC/L-I N/4 tJea step Rda ,J to a9 J 4eJ f ..
Dfl'4 N/A %e.a Step Rdded To updated kote Rc/L-7 40 Rc/L- 8 38 Rc/ L- 9 39 Addleaal gu6Jaar. add'J to stee i n h d=f< J fo,-
e RcI L-io 4I I
Figure 2.1 Task Analysis Update Fom l 5
revised EOP flowcharts. Results were reviewed by HCGS operations and engineering psrsonnel as necessary to verify correct understanding of plant system operating requirements.
The original task analysis was documented on Task Data Forms (TDFs). An example TDF is illustrated in the previously submitted Summary Report (Figure 2.1). The update analysis continued the use of the TDFs in the following manner. When there were not changes in a flowchart step, the original TDF specifying the action elements represented by that step was retained. If a step was eliminated, the TDF was designated as not applicable. If a new step was introduced, a new TDF was prepared. If a step was retained but modified, the original TDF was revised accordingly, or, if the revisions were extensive, a new TDF was prepared.
2.1.3 Process
Specify Component Characteristics An objective of the task analysis update was to establish the specific characteristics of displap and controls necessary for operators to implement the EOPs effectively. The following characteristics were addressed in this analysis:
Displays o Discrete vs. Continuous Displays: One of the first decisions in determining the characteristics of a display was to decide whether it should present only discrete (D) or continuous (C) Information. Discrete information is provided to the operator by a bimodal signal which generally indicates whether a process is or is not energized or activated. The control panel component should indicate, for instance, whether a pump is "on" or "off" and this indicator should be labeled accordingly. Continuous information, on the other hand, presents the operator with a progression of numerical values within a range of values and is displayed on a meter, trend recorder or digital display.
o Type of Continuous Display: If it is important to detect small changes, observe oscillation, easily compare actual values against criterion values or range limits, then an analog scale is preferable to a digital display digit scale. The digital display, however, has the capability of providing more precision over a wider range of values. If it is displaying static Information, 9 it is faster to read than an analog scale because it is not necessary to convert a spatial representation to a numerical value as with the analog scale. This allows rapid confirmation that a parameter is being controlled at the intended value. This characteristic was examined during the evaluation of the continuous-discrete display requirement.
o Range of Values: Given that a display,was to present continuous informa-tion, it was determined whether the range of values on the actual Instru-ment encompassed all of the values required by the emergency procedure, l
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o Scale Precision: If the required values were within the range of the instrument it was next determined whether the design of the scale would allow a precise reading of the required value(s). The criterion for this determination was whether the required value was represented by a gradua-tion mark on the scale. Thus a value of 67 would require a progression of graduation marks with intervals of 1 (i.e., 65, 66, 67, 68, . . .). A value of 325 requires marks at intervals of 25 (300,325, 350, . . .) an.d a value of 108 requires intervals of 2 (104, 106, 108, 110,...). In these determinations the scale precision was considered acceptable if the required value fell exactly between two graduation marks (e.g., the value of 85 falling between the scale marks of 80 and 90).
o Engincering Units: Also examined were the engineering units which were provided for the scale to ensure that the selected term (GPM, OF, PSIG, . . .)
corresponded to the appropriate parameter and that the units were consis-tent for a given parameter.
o Parameter Trending: Some procedural steps require the operator to deter-mine whether a speelfic parameter value is changing in a particular direction (e.g., increasing or decreasing). In this case the operator should be able to refer to a trend or recent record of the parameter values.
Controls o Discrete vs. Continuous Controls: This characteristic refers to the distine-tion between the need to control a process in varying degrees due to changes in plant requirements vs. the need to select different modes such as for "on off" type functions or rage selection.
o Control Actuation Mechanism: The actuation mechanism (spring return vs.
stationary-detent) selected for the control should support the requirement for continuous vs. discrete control. Since continuous control requires varying degrees of adjustment, the spring return is the more appropriate actuation mechanism because it allows smallincremental changes. Discrete control, on the other hand, requiring only mode or binary type decisions, can be satisfied with the stationary-detent mechanism. The control actuation mechanism characteristic was evaluated in conjunction with the continuous-discrete feature.
o Control Position Indication: The Indication of control positions provided by such means as labeling and color, was examined to ensure that the Indication correctly expressed the function of the different control positions.
o Valve Response Time During the control of a process the operator should be aware of the response time of the plant equipment. The main consideration here is in regard to motor operated valves which have a typical or unusually long opening and closing time. To avoid the perception that a valve is not functioning when in fact the valve is just inordinately slow, Information should be provided to facilitate assessment of a valve's operational status. Due to the design of the control panel switches for the motor operated valves this requirement was not addressed on an Individual valve basis. The llope Creek control panel provides an OVERLOAD / POWER FAILURE Indication on the Dalley and Cutler-Ilammer switch controls for 7
motor operated valves. This indication is in the form of an amber colored legend light which blinks when the valve has a problem. Additional information is available during valve operation by observation of flow or pressure parameters.
2.2 Verification of Component Characteristics Verification of the availability of components required for response to EOPs was described in the Summary Report. This section describes the steps taken to verify the availability of ar.y additional requirements identified in the updated task analysis and to evaluate the characteristics and suitability of the components required for response to emergency operating procedures.
Since many of the components appear in several procedures it was useful to summarize their requirements in one location to facilitate the verification process.
Therefore, for each control room component identified in the updated task data forms, a Component Characteristics Form (see Figure 2.2) was prepared. Each form records the characteristics required by the control or display for each emergency operating procedure in which the component is required (see " Specific Requirements" heading on the form).
Af ter the specific requirements were completed, they were summarized and placed in the top section of the sheet labeled " Summary of Requirements." The summary presents only the most conservative or limiting conditions listed *n the specific requirements. For instance, the minimum range of values required for a scale is represented by the-lowest and highest value shown in the specific requirements. Also, if the required precision varies from 5 to 50 in various procedural steps, the final requirement will be 5.
The characteristics of the actual control room component are placed on the form next to the required characteristics to facilitate comparison. When the component does not match the required characteristics, an HED is prepared.
The top block of Information is devoted to the identification of the component. A component sheet represents either a control or a display according to the Indication in the
" Requirement" block: Action (control) vs. Information (display).
All of the summarized control characteristics requirements and a portion of the display characteristics (e.g., legend indicator lights) were verified against the appropriate hardware in the IICGS control room. Since the new scales have not yet been placed in their displays, the verification process verified the requirements against the scale speelfications which appear in the DCP for scale modifications. This step allows an early check on the new scale designs to avoid installation of an inappropriate scale. The scale l
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COMPONENT CHARACTERISTICS FORM PSE&G . HOPE CREEK GENERATING STATION COMPONENT IDENTIFICATION 1 PANEL REQUIREMENT 2 COMP. NO. SYSJSUBSYS.
3 TYPE PLANT EQUIP.
(LABEu INSTR.NO. PARAMETER COMMENTS:
SUMMARY
OF REQUIREMENTS CR CHARACTERISTICS HED DISCRJCONTIN.
VALUEIRANGE PRECISION UNITS TREND COMMENTS:
SPECIFIC REQUIREMENTS PROC. STEP DISCRJ VALUES PRECl- UNITS COMMENT NO. CONTIN. STATE SiON REO. COMPL. BY ON VERIF. COMPL. BY ON Figure 2.2 Component Characteristics Form l
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characteristics examined on the basis of DCPs were the units, precision and specific values or ranges of values.
2.3 Survey of the Plant Computer System Objective:
The purpose of this task was to evaluate the human factors aspects of the HCGS Plant Computer system. This system is referred to as the Control Room Information Display System (CRIDS). The screens composing the Safety Parameter Display System (SPDS), which is a part of CRIDS, were included in the evaluation.
Method:
This survey was based on the application of computer relevant criteria from Chapter 6 of NUREG-0700. These criteria are assembled into a Human Factors Task Plan for the Plaint Computer System, a standard plan developed by Essex to facilitate a systematic evaluation of 0700 criteria. A more complete description of the task plan structure appears in the HCGS Summary Report. All criteria in the computer task plan were evaluated except for those concerned with illumination. These criteria will be examined during the illumination survey.
The computer evaluation was conducted on CRTs in the control room, on the simulator, hard copy prints and documentation of design decisions regarding such variables as color coding and symbol coding. The CRIDS display pages included system diagrams, alarm pages, the page index and the SPDS screens.
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3.0 IMPLEMENTATION SCHEDULE FOR DESIGN SOLUTIONS OF HEDs FROM COMPUTER SURVEY AND VERIFICATION ANALYSIS The HEDs resulting from the Computer Survey and the Verification of Component Characteristics are described in Appendix B of this report. The disposition for each HED is included in this description. Design solutions for those HEDs which are to be corrected will be implemented within six months after Fuel Load.
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8 APPENDIX A MODIFICATION TO PROGRAM PLAN AND
SUMMARY
REPORT A-1
APPENDIX A This Appendix describes modifications to the HCGS CRDR plan since the submission of the Summary Report on August 6,1984.
o Management and Staffing Mr. L. Branch has replaced Mr. G. Brittain as the Bechetel CRDR Coordinator. He is responsible for the Hope Creek Main Control Panel design and layout. He has coordinated the implementation of HEDs which require changes in labels, scales, legends, and panel layouts for the Main Control Room Panels and the Remote Shutdown Panels.
Mr. M. Rogers and Mr. M. Massaro have been added to the Technical Advisory Team as Operations Advisor and Engineering Advisor, respectively. Mr. J. Oliver and Mr. D. Russell are no longer with the advisory team.
Mr. Rogers has been a member of the Hope Creek operations staff for approximately two and one half years and has recently received an SRO license for this unit. He has been employed by PSE&G for seven years and has been licensed as an SRO on the Salem unit before transferring to the Hope Creek Unit.
Mr. Massaro is a PSE&G Instrumentation and Control engineer with seven years experience in the field. Prior to joining PSE&G he was employed by the manufacturer responsible for supplying the Hope Creek Control Room complex. During that time he had extensive exposure to a variety of control room designs.
o Documentation The first page of the Human Engineering Discreparcy Report form has been modified to provide additional space for the Problem Description.
l A-2
PAGE CHANGES l
l A-3
Technical Mvisory Team
- PSE&G CRDR Project Manager
- Chairman, Technical G. Connor, PSE&G - Opns Mvisor Mvisory Team M. Rogers, PSE&G - Opns Mvisor M. Massaro, PSE&G - Engrg Mvisor T.R. McGuire G.A. Elliff, Essex - HF. Mvisor J. Isaacs, BPC - 1 & C Mvisor Bechtel Power Corp. Essex HCGS CRDR HCGS CRDR Coordinator Project Manager L. Branch G.A. Elliff HCOS CRDR Review Team PSE&G BPC Essex Operations Engineering HF l& C l&C Operations Engineering FIGURE 5. HCGS CRDR project management organization l
l h *b
HUMAN ENGINEERING DISCREPANCY REPORT NO: -
PLANT. UNIT: DATE:
REVIEWER NAME:
a) HED TITLE:
b) METHOD OF REVIEW:
c) ITEMS INVOLVED:
d) PROBLEM DESCRIPTION:
(NUREO 0700 CRITERlON) c) SPECl#lC OPERATOR ERROR (S) THAT COULD RESULT FROM HED:
i A-5
--m APPENDIX B REVIEW FINDINGS 11- 1
B1. Review of CRIDS M1: Abbreviations are used in output, which is contrary to NUREG-0700 criteria, and abbreviations are sometimes inconsistent (e.g., " exhaust" is abbreviated "EX" and in other places, "EXH"; periods are used inconsistently on abbreviations through-out the displays).
Disposition: The descrepancy in the abbreviation for " exhaust" will be corrected.
Standarized abbreviations are being used only when necessary during CRIDS developrient. The use of periods in abbreviations is avolded except when required by manufacturer software. There is a low probability for error in these cases.
(Category 4)
M2: Some labels are oriented vertically rather than horizontally, (e.g., on screen #60, coordinates B-2; Coll A and Coll B are vertical).
Dispositlom A correction is not necessary for this HED. The vertical labels are easily readable and spcce efficient. (Category 4)
M3: Labels are often located below or to the right of their associated display, rather than above or to the left as is recommended.
Disposition: A correction is not necessary for this HED. Label placement is space efficient, and associations between labels and corresponding items are clear. (Category 4)
M4: On ABSN25 the Instructive label for the option lists does not precede the lists, but is placed below the first list.
Disposition: A correction is not planned for this HED. No problems have been observed when operators are using this page. (Category 4)
M5: Alphanumeric data is not always lef t justified when presented in tabular form, and numeric data is not always justified on tbe decimal points.
Disposition: This HED will be corrected on P&lD displays and SPDS displays by following guidelines on justification and alignment of data. No change is planned for displays which are a manufacturer standard. There is a low probability of error on the latter displays. (Category 4)
D-2
4
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M6: Some t'able columns are long, with no spacing between groups of five to break up q the column. On the screen for TURB BLDG UNIT COOLERS, some columns are separated by only one enaracter width. ,
4, t k r , Disposition: This discrepancy will be corrected on the STATOR SLOT TEMP '
display and STATOR COOLANT COIL TEMP display. A correction is not planned for the VIDEO GRAPH page since there should be a low probability of error here.
Also a correction on the TURB BLDG screen would add little or no clarity. #
(Category 4) t t
M7: Periods are not placed after item selection designators or at the end of sentences. 4' Disposition: A correction is not planned for this HED due to a low probability of error. This situation results from a manufacturer's standard. (Category 4)
M8: Time and date are not aiways presented in a r!.andardized format. On ABSN31 the time format (to be inputted) is HMM, as opposed to the standard HH:MM:SS. The standard date format is MM:DD:YY. Two dates are given on all CRIDS displays; j the one at coordinate A-4 is presented'as MM/DD/YY, ar.d tha one at D-4 as MM-tjlD-YY.
~ ' Disposition: A correction is not planned for this HED. A change may result it-misinterpretation of a date. The date on the bottom of the page (which uses " '
separator) is a revision date and should appear differently than the current date at the top of the page (which uses "/" separators). (Category 4)
, /
M9: Color coding is not consistent from the control room to the CRT. For example, cyan represents " water" on the CRT and " gas" in the control room mimic.
Disposition: A correction is not planned for this HED. To achieve this consistency, a darker blue would have to be used on the CRT which would result in very poor contrast with the black background thus creating a new HED. Color i coding is consistent within the computer system. It is unlikely that an error will result from these conditions. (Category 4) i '..
3 9 4 W3
M10: Green and yellow are not used in the conventional safety status related manner of indicating " safe" and "potentially unsafe", respectively. Instead, yellow represents " safe" (there is not a distinct "potentially unsafe" category), and green represents "oll". Also, green is used rather than red for the horizontal bar located under the alarms on the top of the screen to indicate that there are more alarms than shown.
Disposition: A correction is not planned for this HED. Since the plant computer system does not have a "potentially unsafe" category, yellow is available for other a uses. Yellow was used instead of green in order to avoid red and green combinations which is perceived as visually displeasing. (Category 4)
M11: Based on the assumption that a solid or filled-in pump symbol on the CRT represents flow through the pump and a filled-in valve represents flow through the valve, then the symbology is not consistent because a running pump is represented by a solid pump symbol whereas an open valve is represented by an outline or unfilled valve symbol.
Disposition: A correction is not planned for this HED. The filled vs. unfilled -
symbology represents equipment status (e.g., off-on), not flow. The filled-in solid valve is designated as closed in order to be consistent with industry standard symbology on Piping and Instrumentation Diagrams (P&lDs). There is no apparent concern from the operators with the current convention. (Category 4)
M12: The faster of the two blink rates in the computer system is ten per second, as opposed to the recommended four.
Disposition: A correction is not planned for this HED. The current blink rate is efficient for highlighting cursor location. Blinking is not used to code information in this CRT display system. (Category 4) .
M13: Blinking should be reserved to highlight emergency conditions, but cursor location is highlighted by blinking also.
Disposition: A correction is not planned for this HED. Blinking is not used to code information in this CRT display system. Therefore the blinking feature is available for the cursor function. (Category 4)
B-4
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$ M14: Alphanumeric characters are made up of a 5X5 dot matrix within a 7X7 f,'c.
surrounding matrix, not a 7X9 matrix as described in NUREG-0700. p ,;
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Disposition: A correction is not planned for this HED as it is felt that this is not a M '%
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significant problem. Operators will be asked to comment on this during operator interviews. (Category 4)
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- M15: Graphic lines do not meet criterion for number of resolution elements per inch.
Vertical lines have 32.8 resolution elements per inch, and horizontal lines have [6,~'.i. ,? -l .
? 38.5, which in order for the line to appear continuous, they should have 50. gh s.1 .
= Disposition: A correction is not planned for this HED. Both horizontal and h verticallines are perceived as continuous. (Category 4) $$y 7, ,, t , , . :
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y M16: Complex symbols should have a height of ten resolution elements in order to be i viewed from a distance of 50 inches. Horizontal valves, and some other symbols p.y. 2.(f,g;j g are seven resolution elements high. A y. [.g:
6 ,pt , . . > ~
e Disposition: A correction is not planned for this HED as it is felt that this is not a ',l,.
- significant problem. Operators will be asked to comment on this during operator ? 'Ai interviews. (Category 4) . ,!f. )
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- M17
- CRT letter heights are smaller than recommended for the viewing distances to W, - '
the CRTs on vertical panel 10C650 and console 10C651. pg .wlp .
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Disposition: A correction is not planned for this HED as it is felt that this is not a significant problem. Operators will be asked to comment on this during operator h['!)
P .i'j; . c!.
interviews. (Category 4) ddy. --: a . .e yOg:.p?j.y ,
,@h'fjf M18: CRT screens are not within the optimum vertical visual limits. The screens on the benchboard are too low, and the screens on the vertical panels are too high. g@,
g Disposition: A correction is not planned for this HED. The screens on the console Q.
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l panel are fairly close to the minimum angle and do not present a problem. p.N..j; ..
[ Generally, the screens are not expected to require long viewing times. As such, ry.Q.M the viewing of the screens on the vertical panel should not cause strain or 2. 9 gp discomfort. (Category 4) .%
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E 3 M19: The PAGE Dl' SPLAY
SUMMARY
, by which displays are accessed, does not have a r convenient method of listing all screens, so that a search for a particular screen
, may involve reviewing all 9 pages of the summary.
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[ Disposition: This HED will be corrected. A "page-link" system is being developed E
as an additional screen retrieval method. This system will allow a display to be accessed from functionally related displays.
I, _ _ _
I- ..
N M20: Spare pages in the PAGE DISPLAY
SUMMARY
are identified with a long title Mf*
[ (PAGE DISPLAY NUMBER XXX), and therefore will probably be attended to by $;'4$yb 2i E operators searching for a screen title. A brief label, or no label, would clearly Ired ?
g distinguish the spare pages from the display screens. _,
=
{ Disposition: This HED will be corrected by using the term " UNUSED" in place of
] the longer titles.
]
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M21: The 9 pages of the PAGE DISPLAY
SUMMARY
(ABSN19) are not designated by
} page number, nor do they indicate the total number of pages.
N Disposition: If the page number was added, no additional information would be l f added. A correction is not necessary for this HED due to a low probability of
, error. (Category 4) n F
M22: Some screens are not labeled and/or have missing or inconsistent page numbers.
= (i.e., screens which should be 060-01 (DRYWELL UNIT CLR) and 069-01 (RHR LOOP A LPCI MODE) are labeled 60-01 and 069-1, respectively).
Disposition: This HED will be corrected by supplying the appropriate page numbers.
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M23: CRT operating procedures d7 act describe the overall computer system.
Disposition: This HED is being corrected. Operating procedures are in the
- process of being developed.
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=
B-B
M24: C0mputer system has insufficient security measures to snsure mat caly properly authorized personnel can make changes. Passwords are not used, keylocus are not used on the large keyboard, and the computer room is not kept locked. The only form of security is controlled access (a guard).
- Disposition: A correction is not planned for this HED. Backup software main-tained in a secure location can quickly restore the system. Also, access to the control room and computer room is restricted. (Category 4)
M25: The relationship between annunciator tiles and the CRT displaying related alarm information is not made clear, thereby increasing search time.
Disposition: This HED will be corrected. CRTs and their related annunciator j panels will be visually linked by horizontal mimic lines connecting the corresponding labels.
M26: When the controls and displays for a system are in proximity to two or more CRTs, it is not clear whether the CRT alarms for that system are assigned to one or more of the CRTs. This knowledge would facilitate use of the ALARM SEARCH function to locate CRT specific tlarms.
- Disposition: A correction. is not planned for this HED. System status is more
(.fficiently determined by a computer P&lD display and hardwired instrumenta- ,
tion. (Category 4)
M27: Terminology on annunciator tiles and CRT alarms differs, so that it is difficult to tell which ones correspond to each other.
Disposition: A correction is not planned for this HED. The relationship between the annunciator and CRT alarms is shown by the Alarm Response Procedure which lists all of the computer alarm messages and operator actions for each annunciator tile. (Category 4)
M28: Annunciator alarms are not recorded on the computer printer.
Disposition: A correction is not planned for this HED. The CRT alarms associated with the specific annunciator message are recorded on the Chronolog.
(Category 4)
B-7
F
\ M29: Alarm priorities are not identified with the alarms displayed at the top o' the P- CRT screen.
Js U Disposition: A correction is not planned for this HED. The priority of a CRT
_ alarm is shown on the Alarm Response Procedure. (Category 4) y .
M30: It is not possible to request a complete display of alarms for a particular system.
Disposition: A correction is not planned for this HED. System status will be -
'i assessed by reviewing the relevant P&ID displays. (Category 4)
M31: It is possible that an alarm may be " bumped" off the CRT alarm display due to incoming alarms before the operator acknowledges the alarm, 4 Disposition: A correction is not planned for this HED. The alarms are not lost i
,I because they are represented on the annunciator tiles, they are on the Chronolog and on the computer P& ids. (Category 4) di 1 i M32: When the computer falls, the back up computer takes over, but no indication is M given when this occurs.
k'i Disposition: This HED will be corrected. An alarm will be provided to signal this y condition. -
p n;
'r i M33: The computer system does not contain' a sequential file of operator entries
, available upon operator request.
?
/ Disposition: A correction is not planned for this HED. There appears to be little 4 need for a sequential file in this context. (Category 4) i -
M34: Hard copies of screen displays are printed remote to the operator (in the computer room, adjacent to the CR), and no print confirmation or denial message is displayed to the operator.
Disposition: A correction is not planned for this HED. Hardcopy of CRT displays ,
is not required. Printed reports and messages are transferred to a backup printer in case of main printer failure. (Category 4) i I i.
B-8 ,
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-3 M35: In cases where an alarm is not suported with a display, inadvertent activation of M< p -
the ALARM INVES PAGE would .?emove the alarm information from the page l]. . .'.~ '
without the operator's knowledge (the automatic appearance of the supportive- v. . ..
display would alert the operator that an alarm had existed, in most cases). {.f.{3[f w"; .' 5ff Disposition: A correction is not planned for this HED. The ale.rms are retained by .Y<
c, .; 7 the system. The ALARM INVES PAGE also provides a conven4nt function for the operator. (Category 4) h*p>lJ.
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M36: It is possible to reprogram a display (e.g., Quiescent Display, Bar Chart, Group -
Log) from a full keyboard with no indication to the operator that the display has //;[7
.Q ,j(.Ns been changed. k 'c if ;
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Disposition: A correction is not necessary for this HED. Administrative proce- M:Qf 'L .
dures will provide for the modification of displays. (Category 4) y!v. .Y j n.* . . ,. R y y .n, p \ ,
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M37: Error messages do not contain instructions to the operator regarding required .P,,W. .r corrective action. 2-t" .
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Disposition: A correction is not planned for this HED. The content of the current
- Nf "
error message is sufficient and has not resulted in any known problems up to this M&fd %.,
time. (Category 4) ' p;.1.f L-p? :: .a <;. ..
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- c. s M38: There is no positive indication of the remaining supply of line printer recording . . , f.b. l.: ' ?
materials. ; > ..._ .. -
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Disposition: This HED will be corrected. An administrative procedure will NQb>
provide for periodic inspection. There is also fail over to the other line printer. p. . c:4
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M39: It is difficult to annotate print copy while it is still in printer because the surface of the printer does not provide adequate writing space, the paper feeds through
)/NN 3."
automatically when print out is complete, and the basket which holds the printed 'h,b}. .., . c paper is inaccessible when egainst a wall. j.[iO{1$?
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Disposition: A correction is not planned for this HED. The material on the printer does not require annotation. (Category 4) yl{Q f$dh >
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M40: The mini-keyboards which control vertical panel CRTs are located behind the operator monitoring the CRT, on top of the bt nehboard (approximately 50" in height).
l Disposition: A correction is not planned for this HED. Operators are familiar with the mini-keyboard operation through control room use and training.
(Category 4)
M41: The function key used to call up a pre assigned display is labeled " QUIESCENT DISPLAY", which does not accurately reflect the function.
Disposition: This HED will be corrected by applying a more appropriate term.
such as " ASSIGNED".
M42: The PAGE FORWARD and PAGE BACKWARD and the TAB FORWARD and TAB BACKWARD keys are arranged contrary to population stereotype. In both cases, FORWARD is to the left of BACKWARD.
Disposition: A correction is not planned for this HED. The operators should become familiar with the arrangement through continual use. (Category 4)
M43: Mini-keyboard controls are not grouped according to function, thereby increasing search time.
Disposition: A correction is not planned for this HED. The current design has the advantage of emphasizing functions that are expected to be most frequently used.
(Category 4).
M44: The labels on mini-keyboard push buttons are difficult to read from a standing position because of small character size.
Disposition: This HED will be corrected by increasing letter size on the push-buttons.
1 B-10
M45: The keyboard slope is 10.50, whereas the recommended minimum is 150 Disposition: A correction is not planned for this HED. The current slope approaches the minimum criterion and the keyboard is not used for long intervals.
(Category 4)
M46: The resistance provided by numeric keyboard keys to not meet criterion.
(minimum is 3.5 oz., numeric keys provide approximately 1.5 oz.).
Disposition: A correction is not planned for this HED since there has been no difficulty observed or reported with the present key resistance. (Category 4) k M47: The layout of the numerical keypad does not conform to population stereotypes. i The two commonly recognized formats are " telephone" style and " calculator" style. The numerical keypad does not conform to either. (Category 4)
Disposition: A correction is not planned for this HED because the present keyboard is very similar to the NUREG-0700 recommendation. (Category 4)
M48: The function keys have handwritten paper labels which are faded and peeling off.
Disposition: The HED will be corrected by engraving the keys.
The placement of the labels for the three rows of function keys make it difficult M49:
to associate the correct label with the appropriate key. -
Disposition: This HED will be corrected by engraving the keys.
M50: Function key labels and the corresponding screen titles are not always consistent. i Disposition: This HED will be corrected by providing appropriate labels on the keys and/or the screens to ensure obvious correspondence between keys and screens, i
B-11
M51: Function key labels (1) are too long to engrave on keys or, (2) are inconsistent with mini-keyboard labels. i Disposition: This HED will be corrected. Key labels will be abbreviated and be made consistent.
M52: Function keys are not arranged according to function, and the duplicates to mini-keyboard keys are not arranged in the same way as the mini-keyboard, thus increasing search time.
Disposition: A correction is not planned for this HED. Since the keys will be labeled, it is felt that the user will be sufficiently familiar with the key layout.
(Category 4) i s
l B-12
B2. Review of SPDS M101: The 9 displays which support the PRIMARY SPDS display are not identified as belonging to the SPDS.
Dispositlom This HED will be corrected. "SPDS " will precede the 9 secondary screen titles. Some screen titles will be abbreviated to allow space for the addition. The PAGE DISPLAY
SUMMARY
will also be changed to show the revised titles.
M102: Data tables on the SPDS displays are not titled.
Disposition: This HED will be corrected by emphasizing identifying information which is already in the table headings. In some cases it is difficult to ,negyide a title which adds new information or is in some way mealiIhgful. Usually there is effective identification in an existing column title. To emphasize this informa-tion, the line surrounding the top of the table will be removed.
M103: Column headings within the SPDS data tables are difficult to distinguish because they are presented in the same manner as data.
Disposition: The HED will be corrected by the correction described in HED M102.
Column headings will be set off by being outside boxed-in data. Space restrictions prohibit the use of double lines which tend to be distracting.
M104: OFFSITE data is not organized in a manner consistent with other data on the PRIMARY SPDS display.
Disposition: This HED will be corrected. OFFSITE (in cyan) will be the heading, with GAS, above its value, and IODINE, above its value, under the GAS terms.
The 5 lines will be lowered slightly on the screen.
B-13
5 ir F .
E M105: In some casen, IIaes are not used consistently for demarcation of subgroups.1) On I r the PRIMARY SPDS Screen, OFFSITE data is not enclosed in a box as is other data. 2) On the screens for SUPPRESSION POOL WATER LEVEL CONTROL and
- PRIMARY CONTAINMENT PRESSURE CONTROL a bold line appears in different places on the large data tables, and it is not apparent what it's function is. 3)
- Within the control function parameter matrix, across the top of each display, no f line is used to set off parameter headings.
w Disposition: Item I will be corrected by providing a box around the OFFSITE data. Item 2 will be corrected by using the bold line for only one function, to (i separate increasing from decreasing values on the screen for SUPPRESSION POOL WATER LEVEL CONTROL. The bold line will be removed from the other y screen. A correction is not necessary for item 3 because the parameters are easy g to locate and read. (Category 4) e M25
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_- M106: The title of the HISTORY BAR GRAPH is too close to the control function -
i
= parameter matrix, and begins to lose its association with the graph on the -
, following screens: SUPPRESSION POOL WATER LEVEL CONTROL, PRIMARY yqpg w.7 Z CONTAINMENT PRESSURE CONTROL, DRYWELL TEMPERATURE CONTROL, and RADIOACTIVITY RELEASE CONTROL. On the above screens and the RPV rfWgy:
i PRESSURE CONTROL screen, the " MINUTES" term at the bottom of the graph {y.,(.j% . 's and the display below it also appear crowded. C, .V4 g ,, ' -
p Disposition: This HED will be corrected by removing the line on the top of the % 'f,':M:
g table below the bar graph (see HED M102). This will create more space below it. ..
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Space does not allow moving a display to make more room at the top, but the u!.
title's association with the graph is strengthened by the convention of titles being outside of boxes.
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M107: Parameters are not presented in a consistent, standardized manner. 1) In the E; G: ',. ,
control function parameter matrix, across the top of the SPDS screens, U. 7ftp '."
i parameters are presented in different orders under different systems. 2) M. '
Parameters are also in an inconsistent order in the data box for Margin to Limit
- 7. ')1< .r .E g on the lower right' corner of several screens.
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- Disposition 1 Item 1: This portion of the HED will be corrected. Parameters will m7 s,; .p..v- 4 .
be presented in a consistent order on primary and secondary screens.
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k Item 2: A correction is not necessary for this portion of the HED. The order of R ?~ g the parameters corresponds to graphs in the EOPs. (The top one always refers to : ~. $
the horizontal axis). (Category 4) *( ~ ~ A
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M108: The MARGIN TO LIMIT '"ABLE is not in the same location on screen #226 as it is on the other SPDS displays.
Disposition: A correction is not planned for this HED due to a low probability of error. Although the table is in a non standard location, operators should be able to locate it without difficulty. Movement of the table would create a new HED due to relocating the graph. (Category 4) w.
M109: The SPDS screen sequence is inconsistent with the sequence of parameters in the control function parameter matrix.
Disposition: The HED will be corrected. The sequence of the SPDS screens will be changed to correspond to the sequence of parameters in the CFPM. j M110: Alphanumeric data is not left-justified when presented in tabular form.1) In the ACTION column of the large data table on the left of the SPDS displays, data is centered. 2) Data is right-Justified on the screen for RPV WATER LEVEL CONTROL.
Disposition: Item 1: This portion of the HED will be corrected. Alphanumeric data in ACTION column will be left-justified.
Item 2: No correction is planned for this portion of the HED. Although they are not left-Justified, there is a low probability of error in a column consisting of "YES" and "NO". (Category 4)
Mill: Numeric data is not always right-justified with decimal points aligned when presented in tabular form, (e.g., on the screen for SUPRESSION POOL WATER LEVEL CONTROL, "93" is left justified in the ACTION VALUE column, and on the screen for PRIMARY CONTAINMENT PRESSURE CONTROL all values are left-Justified in the same column).
Note: Many numerical values have not yet been programmed.
Disposition: The HED will be corrected with the exception of the screen for SUPPRESSION POOL where "93" cannot be moved because space is needed to designate (FT) after it. (Category 4) i B-15
M112: Abbreviations are used in output text of the SPDS.
Disposition: A correction is not necessary for this item because the use of abbreviations saves space and allows information to be displayed in a more easily readable format. (Category 4)
M113: Abbreviations used in the SPDS are inconsistent. 1) Abbreviations are not consistent with CR abbreviations (as listed in Abbreviations and Acronyms f'or Hope Creek Generatinst Statfor.). 2) Some abbreviations are inconsistently applied within the SPDS (e.g., " Pressure" is abbreviated both " PRESS" and " PRES"). 3)
Some abbreviations are unfamiliar, and are not listed in the above guide.
Disposition: Items 1 and 2 of the HED will be co rected. Abbreviations will be revised to agree with the acronym list where space permits, and when space restrictions necessitate a shorter abbreviation it will be included in the abbrevia-tion list.
Terms listed in item 3 originate in the EOPs and training will ensure familiariza-tion. The terms will be included in the above abbreviations guide. (Category 4)
M114: In some cases the term in the title at an SPDS screen is different than the corresponding term (for the same function) in the control function parameter matrix, (e.g., The term in the title of the screen for RADIOACTIVITY RELEASE CONTROL is inconsistent with the CFPM term, OFFSITE).
Disposition: A correction is not planned for this item. The screen term is an EOP term, and the CFPM term is a plant term. The paired terms are not necessarily equivalent and all are easily identified. (Category 4)
M115: The term " MAX NORM" on the SPDS displays implies a value within the normal range, when in fact the value could be well beyond the normal range.
Disposition: A correction is not planned for this HED. The term MAX NORM is used in EPGs and EOPs. Operators are familiar with the term through training.
(Category 4)
B-16
M116: A table which is on most SPDS screens is referred to as the Margin to Action Table by the SPDS Functional Description. Yet most of the tables use the designator MARGIN TO VALUE in the column heading and is therefore inconsistent.
9 Disposition: This HED will be corrected. MARGIN TO ACTION will be used to .
replace MARGIN TO VALUE in the column headings.
J M117: Radiation points are presented using exponential notation, which necessitates making a mental translation of the value.
Disposition: A correction is not necessary for this item becasue there is a low probability of error. This notation conforms to conventions used in the Radiological Monitoring System. (Category 4)
M118: Numbers are not used as designators for selectable items in the SPDS. Items are selected by " tabbing" to the label and executing.
Disposition: No correction is necessary for this item becasue there is a low probability of error. The tabbing system provides effective selection capability.
(Category 4)
M119: The bar graph increments of one character space represent a range of actual parameter values. Therefore, although a value may be changing within that range, it will be represented graphically as being static.
Disposition: This HED will be assessed during the SPDS Verification and Validation and a resolution will be determined then.
M120: White and cyan are used inconsistently. 1) White represents questionable and manually entered data, but is also used for table outlines, therefore, weakening the intended meaning of white. 2) Cyan represents static information in SPDS, water in CRIDS, and instrument gas in the CR.
Disposition: Item I in this HED will be corrected by changing the outlines in SPDS screens from white to cyan. No correction is planned for item 2. Cyan is used consistently in the SPDS screens.
B-17
e M121: Graphs are not constructed so that numbered grids are bolder than unnumbered grids.
Disposition: A correction is not planned for this HED due to manufacturer's standards (acceptable character not available), and low probability of error.
. (Category 4)
M122: Major and minor graduations are used on scales, but the length difference is apparent below the horizontal axis, not above, closest to the trend line.
Disposition: A correction is not planned for this HED because the graph is easily readable and there is a low probability of error. (Category 4)
M123: Scale units do not appear to be consistent with the degree of precision and accuracy needed by the operator, (e.g., vertical axes have only 3 values, which are increments of 25,27,100,125, or 600, depending on the screen).
Disposition: A correction is not planned for this HED. Manufacturer's standards allow for only a limited number of increments to be added.
The probability of error is decreased due to the following factors:
- the current value is always diplayed
- the " poke point" gives historical values
- the graph is used only to provide general trJad information (increasing, decreasing).
(Category 4)
M124: Zone indications are not shown on History Bar Graphs.
Disposition: A correction is not planned for this HED. Specific value information is displayed in the adjacent table, and zone indication may be misleading due to manufacturer's standards (in some cases, an increment may represent 20 units).
(Categcry 4)
M125: On the RPV WATER LEVEL CONTROL screen, the History Bar Graph does not provide an indication for Top of Active Fuel (TAF) on the RPV water level scales.
Dispositon: The HED will be corrected. The term "TAF" will be placed alongside the right, vertical scale in the appropriate location without a tick mark.
i B-18
M126: Values which are less than the lowest scale value are depicted as a bar nevertheless, and may be interpreted to be equal to the scale value.
Disposition: This HED will be assessed during the SPDS Verification and Valida-tion and resolutions will be determined then. .
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cr B3. COMPONENT VERIFICATION N1: The emergency procedures specify Condensate Tank Level in percentage (%) units but the scale uses units of gallons instead.
Disposition: This HED will be corrected. The preferred unit of measure is gallons. The procedures will be modified to incorporate " gallons" and the numerical values will be changed accordingly.
N2: The numerical value stated in the Emergency Operating Procedures cannot be exactly read from these scales.
I
- 1. Suppression Pool Level (74.5-78.5, 47, 81.5 inches)
- 2. Drywell Pressure (1.68 psig)
- 3. Suppression Pool Pressure (14.8 psig)
- 4. Reactor Pressure Vessel Temperature (2120F)
- 5. Standby Liquid Control Tank Level (325 gal)
- 6. FRVS - Suction Temperature (2120F) ge3 Disposition: A correction is planned for the Suppression Poo! LevelJtem by providing on additional narrow range indicator which will include the -wdves of 74.5-81.5. A correction is not planned for the remaining items. The presant scale precision is sufficient and the scale range was selected to cover the dynamic range of each process. The EOPs are intended to provide guidance to operational staff with specific action taken at the d!Mretion of the Shift Supervisor.
Therefore exact indication is not required for these parameters. More precise indication for these parameters are provided on the plant computer, SPDS and the annunciator system. (Category 4) ,
Airecl%
N3: A digital display is used for Fire Pump Discharge Pressure instead of an analog scale. An analog scale is better at displaying changing and oscillating values which could be expected on a discharge pressure display.
Disposition: A correction is not planned for this HED. Fire Pump discharge pressure is designed to be constant. This will be confirmed during dynamic testing. (Category 4)
B-20 l
N4: The digital indicators in the 4 rod display provides ambiguous information because they identify odd numbered positions by "- " instead of numerals. The operator may not be able to determine from this display whether a hung up control rod is at an acceptable position (i.e., notch 01) or at a position that requires action (e.g.,
notch 03, 05, 07, etc.) if the rod position is betwcen even numbered notches. Such information is required in EOP 101, for instance, which has a step asking if
". . . all rods (are) inserted to or beyond position 02."
Disposition: A correction is not planned for this HED. There is a low probability ,
that a control rod will hang up on an odd numbered position due to the notch design. Also, the odd numbered positions are wired together by the manufacturer to provide a drift alarm. The design of this instrument is a General Electric standard. Furthermore, the plant computer can be used to determine rod position.
(Category 4)
N5: Trend recorder in FRVS records Reactor Building D/P but is labeled as recording Filter D/P.
Disposition: This HED will be corrected. The incorrect label will be replaced by a label identifying the correction function.
N6: There appears to be no direct means for throttling RHR flow into the RPV as indicated in EOPs 205,206, and 207.
- Disposition: A correction is not planned for this HED. RHR flow can be changed by varying the numbe.- of pumps in service. (Category 4)
N7: The procedure for RPV Control requires the defeat of the Rod Sequence Control System. There are no controls in the control room for this task.
Disposition: This HED will be corrected. An EOP support procedure and special tool kit will be developed for this task. If a hardwired control was to be provided for the bypass function, accidental activation could prevent the system from functioning as intended. Also I&C personnel are located on the same level near the control room. (Category 4) l B-2'1
i N8: One of the entry conditions for EOP 103 (Reactor Building Control) is one inch of water in a pump room. Hardwired indication (annt.nciators) for this condition is provided for each of the pump rooms called out in the Entry Conditions except for the CRD pump room.
Disposition: A correction is not planned for this HED. This information is provided on the Safety Parameter Display System. (Category 4)
N9: The procedure for Reactor Building Control requires a determination of water level at 4-1/2" in various pump rooms. This determination requires knowledge of how long a specific sump pump has been running. There is no hardwired instrumentation to indicate when the sump pump started operating or where it is located. Also, there is no signal to the operator that the operating time of the pump is reaching the time limit. The time limit varies for the various pump rooms.
Disposition: This HED will be corrected. The required information will be provided on the Safety Parameter Display System. It will include such informa-tion as pump identification, its state and time of running.
N10: There are no hardwired indications in the control room to display the pump room temperatures described in the entry condition for temperature in procedure 103 (Reactor Building Control). This indication would be used for several steps in this procedure (e.g., RB/T-4, 8,16, RB-3).
Disposition: A correction is not provided for this item. This information is provided on the Safety Parameter Display System. (Category 4)
B-22