ML20087B643
| ML20087B643 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 08/08/1995 |
| From: | ENTERGY OPERATIONS, INC. |
| To: | |
| References | |
| 1904.002, NUDOCS 9508080209 | |
| Download: ML20087B643 (61) | |
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1 ENTERGY OPERATIONS INCORPORATED ARKANSAS NUCLEAR ONE r
Arkansas Nuclear One
' Russellville,. Arkansas i
Date: 950731
- i i
MEMORANDUM.
TO:.
103
- Please return transmittal' CC - NRC - WASHINGTON to Document Control, i
3RD floor Admin Bldg
- FROM:
DOCUMENT CONTROL
- I Ref Key: 20119 j
'1
SUBJECT:
. PLANT MANUAL UPDATE: NEW REVISION TO PROCEDURE i
PROCEDURE / FORM NUMBER: OP 1904.002 i
REV. # 27 TC # 0 PC # 0 l
e PROCEDURE / FORM TITLE: OFFSITE DOSE PROJECTION RDACS COMPUTER' METHOD l
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1 Tha following pages of the indicated procedure (s) contains items which involve personal privacy or proprietary material. PLEASE REMOVE THE INDICATED MATERIAL
' l PRIOR TO DISTRIBUTION TO PUBLIC DOCUMENT ROOMS, ETC.
PROCEDURE (S)
PAGE (S) j j
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TRANSMITTAL (PROCEDURE / WORK PLANS / CHANGES / FORMS) 1013.002H
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-ENTERGY OPERATIONS INCORPORATED ARKANSAS NUCLEAR ONE 61 of 77 PROCMORK PLAN NO.
REV.
C TITLE: OFFSITE DOSE PROJECTIONS RDACS COMPUTER METHOD 1904.002 27 EXP.DATE SAFETY-RELATED
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TABLE OF CONTENTS
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PAGE NO.
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SECTION I
1.0 PURPOSE............................................................
3 2.0 SCOPE..............................................................3 i
1 1
3.0 DESCRIPTION
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4.0 REFERENCES
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5.0 D E FI N I T I ON S.......................... * *
- * * * * * * * * * * * * * * *.......... 5 6.0 RESPONSIBILITY AND AUTHORITY........................................'?
7.0 LIMITS AND PRECAUTIONS.............................................
8 8.0 RDAC S MENU STRU CTU RE............................................... 10 9.0 INSTRUCTIONS.......................................................
15 9.1 RDACS ope rations - Auto Mode.............................. 15 9.1.1 Control Room - Initial Dose Assessment.......... 15 9.1.2 Emergency Operations Facility - Dose Assessment Team............................................
21 9.2 RDACS Operations - Forecasting............................ 25 9.2.1 Obtaining a Site Release Rate Forecast..........
25 u
9.2.2 Meteorological Forecasting......................
25 9.2.3 Dose Forecast Processing........................
27 9.3 RDACS Operations - Backup Mode............................ 29 9.4 Determination of Current Release Rate and Meteorological Conditions................................................ 30 9.5 Status Change Reports..................................... 40 9.6 Editing f o r Unmonitored Releas es.......................... 4 2 9.7 Centerline Dose Rate Adjustments for Field Data-Scale Factors................................................... 43 9.8 Isotopic Distribution Changes............................. 45 1
i 9.9 Data Trending............................................. 46 k
9.10 Obtaining RDACS Data from the Alternate EOF............... 47 i
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. i 10.0 ATTACHMENTS AND FO PJ45.............................................. 4 8 :
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10.1 ATTACHMENTS 10.1.1 - Typical Stability Classes.by-Date, Time, and Cloud cover.....................
49 10.1.2 - RDACS System configuration....... 50 r
i 10.1.3 - Sigma Theta / Stability Class comparison......................................
51
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.10.1.4
. Attachment 4 - Dose Assessor's Quick Reference Backup Mode.....................................
52 s
10.2 FORMS 10.2.1 Form 1904.002A - Plume Update.
Parameters / Meteorology Worksheet................
52 10.2.2 Form 1904.002B - Plume Update Parameters / Release worksheet....................
53 10.2.3 Form 1904.002D - Dose Scale Factor Worksheet.... 54 10.2.4 Form 1904.002E - Forecasting Worksheet..........
55 10.2.5 Form 1904.002F - Isotopic Distribution Documentation Worksheet.........................
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PROCEDURE / WORK PLAN TITLE:'
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METHOD O
1.0 PURPOSE d
The purpose of this procedure is to provide an initial estimate of the radiological conditions at the ANO Exclusion Area Boundary, provide information to determine the Emergency Action Level for subsequent classification into one of the four Emergency Classes, define the offsite area (s) potentially affected by an airborne radiological release, provide an estimate of the Total Effective Dose Equivalent (TEDE), Child Thyroid dose rates, formulate offsite radiological. Protective Action Recommendations (PARS) and refine projections based on available field monitoring data using the Radiological Dose Assessment Computer System (RDACS).
L 2.0 SCOPE 1
2.1 This procedure describes the use of RDACS in three (3) different operating modes:
auto mode, backup mode and forecast mode.
2.2 This procedure is applicable to airborne radioactive releases from ANO as indicated by the ANO Super Particulate Iodine Noble Gas (SPING) monitors or by other radiological monitoring devices used to assess unmonitored releases (e.g., Steam Line Monitors).
2.3 If releases are occurring from steam vents or from an unmonitored.
release point, release rates must be determined using Procedure 1904.004, " Estimating Airborne Release Rates".
3.0 DESCRIPTION
The RDACS is a network system which obtains and relays information to a series O
of computer terminals (nodes) located in the Unit One and Unit Two control Rooms, the [ Technical support Center (TSC)] and the Emergency Operations Facility (EOF). The Control Room RDACS computers are continuously powered-up and will alarm whenever identified lindts are exceeded (see section 9.1.1.B).
The RDACS is a redundant system composed of two " File Servers", designated as "A" and "B", which continuously accept radiological release data from the eleven (11) ANO SPINGS and meteorological data from the meteorological tower via the Safety Parameter Display System (SPDS).
If at any time one of the two file servers fail, the alternate file server assumes the lead for collecting and distributing data to the various nodes without any data loss or interruptions.
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3.0 DESCRIPTION
(Continued)
'N_]
The file server distributes accumulated information to the various nodes via a Local Area Network (LAN).
If both file servers become inoperable for any reason, the user will then use the RDACS in its backup mode. The backup mode will require manual entry of SPING and meteorological data.
If the LAN becomes inoperable, radiological and meteorological data may still be available to the nodes located in the Control Rooms.
If the file server is lost, meteorological data will be available via the Unit One control Room meteorological strip charts or through information obtained from the Corps of Engineers or Russellville Airport and the use of Procedure 1904.005,
" Atmospheric Stability Class Determination", and radiological data pay be obtained using Precedure 1904.00t, " Estimating Airborne Release Rates".
4.0 REFERENCES
4.1 REFERENCES
USED IN PROCEDURE PREPARATION:
4.1.1 Emergency Plan 4.1.2 EPA-400, " Manual of Protective Action Guides and Protective Actions for Nuclear Incidents" 4.1.3 "Offsite Dose Calculation Manual" (ODCM) 4.1.4 Title 10, Code of Federal Regulations, Part 20 (10CFR20) 4.1.5 Methodology Manual, Emergency Dose Calculation Package,
/N EDC/ 6600, Rev. O, October 1982, Applied Physical
(,)
Technology, Inc.
4.1.6
" Workbook of Atmospheric Dispersion Estimates", D. Bruce Turner, 1970.
4.1.7
" Meteorology and Atomic Energy", U.S. Atomic Energy Commission, D.H. Slate, July 1968.
1 4.1.8
" Arkansas Nuclear One Evacuation Time Study", ANO Emergency Plan, Appendix 5.
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4.1.9 OCNA048710
4.2 REFERENCES
USED IN CONJUNCTION WITH THIS PROCEDURE:
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4.2.1 1904.004, "Estinating Airborne Release Rates" 4.2.2 1904.005, " Atmospheric Stability Class Determination" 4.2.3 1904.008, "Use of the WSI Weather Information Service" j
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4.0-REFERENCES (Continued)
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'4.2.4 1904.010, " Duties of the Initial Dose Assessor" 4.2.5 1904.011, " Duties of the Dose Assessment Team" 4.3 RELATED ANO PROCEDURES:
4.3.1 1604.051, "Eberline Radiation Monitoring System" 4.3.2 1903.010, " Emergency Action Level Classification" 4.3.3 1903.011, " Emergency Response / Notifications" 4.4 REGULATORY CORRESPONDENCE CONTAINING NRC COMMITMENTS WHICH ARE IMPLEMENTED IN THE PROCEDURE:
[ BOLD] DENOTES COMMITMENTS.
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4.4.1 OCAN048704, Section 9.1, 9.2 and 9.3 4.4.2 OCNA048609, Section 9.7 4.4.3 OCANO38313, Section 9.1, 9.2 and 9.3 4.4.4 OCNA018411, Section 9.1, 9.2 and 9.3 4.4.5 OCAN079009, Section 3.0 and Attachment 2 l
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5.0 DEFINITIONS 5.1 Radiological Dose Assessment Computer System (RDACS) - The primary and D'
secondary data processing system used for dose assessment j
calculations. This system consists of two redundant file servers, a local area network and multiple nodes.
5.2 File Server - One of two redundant computers located in the SPDS rocs which collect radiological and meteorological data, process and store this data, and transmit this data to the requesting nodes.
5.3 Local Area Network (LAN) - The communications system which allows processed data from the file server to be transferred to any node.
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( s) 5.0 DEFINITIONS s-5.4 Node - The terminals connected to the LAN that the user interfaces with to perform dose assessment functions.
.i 5.5 SPING - One of the eleven Eberline radiological air monitoring
-l detectors connected.to RDACS. Each SPING monitors a single physical
]
release point for airborne particulates, iodines, and noble gases.
5.6 Continuous Monitor File (CMF) - The files which contain raw meteorological and radiological data. The'RDACS has three continuous monitor flies; one for 2 minute data,.one for 10 minute data, and one for hourly averaged data. The 2 minute file is 24-hours long, the 10 minute file is:15 days long and the 60 minute file is 60 days long.
)
i 5.7 Auto Mode - The RDACS mode of operation.in which the file server requests data from the SPINGS and meteorological tower, processsa this 1
data, transmits the processed data via'the LAN to the requesting node from which the node can either display or print this processed data.
5.8, Backup Mode - The RDACS mode of operation in which current processed data is unavailable from the file servers.. Previous data will be
. stored on the node of operation if the user has requested a plume update from the system before the failure.
In backup mode, current
' data must be gathered from alternate data sources, entered into the model, the model executed and the resultant data either displayed or
- printed, t
5.9 Forecast Mode - The RDACS mode of operation in which all previous data
[)Y N,
segments can be updated to the working node, forecasted radiological and meteorological data are entered, processed and printed such that based upon estimates of future conditions, appropriate actions can be l
taken.
5.10 a0(sigma theta) - The standard deviation (net change) of the horizontal wind direction over time.
5.11 At (delta t) - The vertical temperature differential between the upper and lower temperature' sensors on the meteorological tower (in degrees Celsius).
J 5.12 X/Q - The ratio of the concentration of radioactive' material (at a specific location) to the release rate (at the origin) in units of pCi/cc/Ci/see which is equivalent to units of secs /m*.
5.13
<> - Brackets represent a labeled computer button.
5.14 Dose Evaluation Points - Eighty (80) different points within the 10-mile EPZ for which RDACS calculates off-axis dose rates and cumulative doses.
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~5.0.
DEFINITIONS (Continued) j M
5.15 Protective Action Guideline (PAG) - Cumulative radiological doses-which the U.S. Environmental Protective Agency considers sufficiently hazardous to the health of the general public to warrant widespread protective actions, such as evacuation.
5.16 Protective Action Recommendation (PAR) - Recommended precautionary actions issued to offsite authorities which are based on radiological release data.
6.0 RESPONSIBILITY AND AUTHORITY 6.1 SHIrf SUPERINTENDENT 6.1.1 Responsible for determining if an unplanned gaseous release to the environment is indicated by symptoms such as SPING monitor readings, area radiation monitor alarms or other indications.
6.1.2 Responsible for ensuring that offsite dose projections are performed until relieved by the Dose Assessment Supervisor and for supplying backup meteorological data and "unmonitored release" data to the Dose Assessment Team, as necessary, throughout the incident.
6.1.3 Whenever the Shift Superintendent is responsible for Emergency Direction and Control, he shall review and O
approve Protective Action Reconsnendations and ensure that V
these recommendations are communicated to the appropriate offsite authorities.
6.2 DOSE ASSESSMENT SUPERVISOR (DAS) 6.2.1 Once dose assessment has been assumed by the EOF staff, the Dose Assessment Supervisor is responsible.for tracking offsite doses, gathering forecasts and formulating Protective Action Recommendations (PARS).
PARS generated by the Dose Assessment Team are then forwarded to the Radiological / Environmental Assessment Manager (REAM).
The DAS is responsible for the direction of the Dose Assessment Team including the order in which the steps of Procedure 1904.002 are implemented based upon actual event conditions.
6.3 RADIOLOGICAL / ENVIRONMENTAL ASSESSMENT MANAGER (REAM) 1 6.3.1 The. REAM is responsible for reviewing dose forecasts and selected PARS and forwarding appropriate PARS to the TSC Director / EOF Director for notification to offsite authorities.
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6.0 RESPONSIBILITY AND AUTHORITY (Continued) j wy-6.4 TSC DIRECTOR 6.4.1 Whenever the TSC Director is. responsible for Emergency
~ Direction and Control, he shall review and approve Protective Action Recommendations forwarded to him by[the REAM. He.shall also ensure that<these recommendations are communicated to the appropriate offsite authorities.
6.5 EOF DIRECTOR 6.5.1 Whenever the EOF Director is responsible for Emergency l
Direction and Control, he shall review and approve Protective Action Recommendations forwarded to him by the REAM.
He shall also ensure that these recommendations are communicated to the appropriate offsite authorities, i
7.0 LIMITS AND PRECAUTIONS f
7.1 This procedure describes only limited routine and emergency use of the-RDACS computers. A wide range of additional capabilities are available. However, the occasional user should not attempt to use programs and commands which are-not specifically described in this procedure.
7.2 This procedure provides a projection of the radiological conditions based upon measured release rates and meteorology; field monitoring is'
T necessary to determine the actual conditions.
d 7.3 Actual terrain and weather conditions (
e.g.,
precipitation) will generally limit the accuracy of the projected doses at a specific location.
7.4 The Emergency Dose Calculation (EDC) data files are circular in nature. When the last available new segment has been used, the next plume segment will write over the location of the first plume segment.
7.5 Following an actual event or drill / exercise in which the normal.
isotopic mix has been altered, the user shall re-enter the original values.
7.6 Once the user has begun processing plume updates in the RDACS backup mode, the RDACS system does not allow for the transfer of plume update information to the RDACS Auto Mode if it becomes available.
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'7.0
- LIMITS AND PRECAUTIONS(Continued)
>V 7.7 Whenever unmonitored releases,.SPING data, isotopic distribution or scale factors are edited while in Auto Mode, these changes will edit
. values in the. file servers and thus affect all RDACS nodes.
7.8-Messages acknowledged by the user from a particular RDACS terminal-will not clear the displayed message on other RDACS terminals.
7.9 If any additional software has been added to the RDACS file servers.
l and a particular node has not been turned on since that addition, the node being logged on will pause temporarily to load the most current software.. An update box will appear on the screen during this process
'i and will disappear once the update is complete. No user _ interaction will be required.
l 7.10 Protective Action Recommendations (PARS)Iformulated through the use of this procedure are based solely on radiological release data.
Additional' PARS are formulated by other sections of the Emergency Response Organization which are based on onsite plant conditions.
7.11 Calculations in this procedure are conservatives however, actual offaite doses and decision times may be higher or lower, and new recommendations should be considered whenever updated information becomes available.
7.12 If field data measurements are available prior to projected RDACS information, PARS may be developed using centerline field data.
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OFFSITE DOSE PROJECTIONS RDACS COMPUTER C M GE:
METHOD 8.0 RDACS MENU STRUCTURE
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8.1 GENERAL MENU DESCRIPTION 8.1.1 The RDACS computers are menu driven.
Each menu selection has additional submenus. Menu options may be obtained in-one of two ways:
A.
Enter the number of the option on the keyboard.
NOTE Menus with 9 or fewer options can be selected by pressing the corresponding number.
For menus with more than 9 options, you would select both digits
( i. e. ~, option 10 would be selected by entering 1 and 0 and then < ENTER > while option 1 would be entered by simply depressing 1.
B.
Use the cursor keys to highlight the chosen option followed by < ENTER >.
8.1.2 Each screen has a user system block at the bottom of the screen which defines the keys. that. can be used for option selection.
The user should refer to this user system block for the appropriate key selection choices when using a particular screen.
(s 8.1.3 When RDACS is brought up from a powered-off state, a menu
(
will appear which will ask you to " Choose Operating Environment".
From this menu, you have two options:
A.
Online Live Mode - this option is used to select current real-time data.
B.
Offline Drill Mode - this option is used to select i
data currently stored in files for use in drills and exercises.
8.1.4 Gaseous Effluent Monitor - Main Menu l
1 A.
RDACS Subsystem - this option is used to view any processed plume segment and print all associated plu:ne data.
B.
SPING Subsystem - this option is used to manipulate and control the SPING(s) and associated SPING parameters.
C.
System Status - this option is used to view the SPING j
and met tower parameters.
Parameters may be viewed for a 15 second, 2 minute average or 10 minute average duration.
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8.0-RDACS MENU STRUCTURE (Continued)
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~s D.
Status Change Report - this option is used to view information caused by a SPING/ meteorological status change and to allow the user to edit release / meteorological parameters. This report is updated whenever status changes occur.
i E.
EAL Report - this option is used to view / print the most recent site boundary dose information and associated Emergency Class. 'The user may also view.
previous EAL Reports. This report is generated and updated every 2 minutes once' release limits have been exceeded.
F.
Data Display - this option is used to view and trend current and/or historical data from the SPINGS and meteorological tower.
G.
Alarm Log Viewer - this_ option is used to view and acknowledge any alarm on the system.
H.
Data Acquisition Maintenance - this option is used to edit the release rates for releases from SPINGs that have failed. This editing is normally done from the Status Change Report screen whenever failures have occurred during Emergency Dose Calculation (EDC) processing.
)
I.
ERDS Subsystem - This menu is used to send key operational data to the NRC whenever an Alert or
~
higher emergency class has been declared. This option is only operational on selected RDACS terminals (e.g.
Control Room).
8.1.5 RDACS Subsystem Main Menu
)
A.
Initialize RDACS - this option is used to initialize all system files in the event you have no. live data from the SPINGS or meteorological tower, the RDACS file servers are out of service, or the Local Area Network is not operational. This option can only be
)
used in backup and forecast modes, i
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METHOD 8.0 RDACS MENU' STRUCTURE (Continued)
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B.
Enter Plume Update - this option is used to enter current or forecasted data into the model.
1.
Update Parameters & Meteorology - this option is used in backup and forecast modes to enter current or forecasted meteorological data, j
2.
Releases from Monitored Points - this option is'
]
used in backup and forecast modes to enter current or forecasted radiological data from.
I monitored release points.
J 3.
Releases from Unmonitored Points - this option is used in auto, backup and forecast modes.to enter current or forecasted radiological data from unmonitored release points.
4.
Dose Scale Factors - this option is used in auto, backup and forecast modes to enter the current correction factors for matching the models l
projected data to the actual data measured in the field.
5.
Isotopic Distributions -'this option is used in auto, backup and forecast modes to enter the.
current isotopic distribution determined by
[N sampling an active release point.
6.
Execute Model - this option is used in backup and forecast modes to process manually entered data.
C.
Display Plume Data - this option is used to view on the screen data processed for each plume segment.
1.
Emergency Class - this option is used to view the current emergency class calculated by the model af ter processing is complete.
2.
Plume Segment Data - this option is used to view the current plume characteristics'and parameters i
for drawing the plume on a ten mile EPZ map.
3.
Plume Centerline Data - this option is used to view the centerline cose. values for a variety of distances down the centerline of the plume.
4.
Dose Evaluation Points - this option is used to view data calculated at the dose evaluation points for Total. Effective Dose Equivalent (TECE) dose rate, TEDE cumulative dose, Child Thyroid l
dose rate and Child Thyroid cumulative dose.
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.. -.0.0-RDACS MENU STRUCTURE (Continued)
%s(
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'5.
Plume Update Input - this option is used to view meteorological, radiological, scale factor and t
isotopic distribution data for the current plume segment.
l D.
Print Plume Data -' select this option to print data processed for each plume segment.
1.
' Routine Reports - this option is used to print' the entire report for a projected or. forecasted plume update.
2.
Emergency class - this option is used to print l
the current emergency class calculated by the l
model after processing is complete.
I 3.
Plume Segment - this option is used to print the.
current plume characteristics and parameters for drawing the plume on a ten-mile EPZ' map.
4.
Plume Centerline - this option is used to print the centerline dose values for a variety of distances down the centerline of the plume.
5.
Dose Evaluation Points - this option is used to print data calculated at the dose evaluation points - for TEDE dose rate, TEDE cumulative dose, Child Thyroid dose rate and child Thyroid cumulative dose.
6.
Plume Parameters and Meteorology - this option is; used to print meteorological data used for'a particular plume segment.
7.
Release Rates this option is used to print radiological data-used for a particular plume segment.
- t 8.
RDACS/ Field Data Comparison-Sheet - This option
. prints the most recent RDACS update centerline dose rates to allow the user to log field measurements and compare With RDACS projected dose rates. The report also provide a ratio of' 1
the RDACS TEDE dose rates to Whole Body G mma dose rates.
9.'
Dose scale' Factors and Isotopic Distribution,s,-
this option is used to print the currer.t dose scale factor information as well as isotopic.
distribution information for each release point. -
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METHOD 8.0 RDACS MENU STRUCTURE (Continued) v E.
Protective Action Recommendation - This option allows the RDACS user to calculate.a protective action based on dose rate and meteorological information.
f F.
Accept New Update - This option allows the user to _
l accept calculated plume data from the file server in response to a "New Update Available" message.
G.
Draw Plume Map - This option allows the user to. view a displayed 1, 10 or 50-mile EPZ map-showing the.
projected position of a radioactive plume along with' dose data and the derived emergency class.
H.
Switch Operating Modes - This option allows.the user.
to switch from one operating mode to another and
-transfers a user specified number of updates from the current mode of operation to the specified mode of operation.
l I.
Terminate an Event - This~ option is used by the i
Emergency Planning / Computer Support groups to terminate an event once a release has stopped and conditions are favorable to do so (i.e., possible duplication to a backup data source).
r J.
-RDACS/ Field Data Comparison Sheet - This option prints the most recent RDACS update centerline dose rates to
("'}
allow the user to log and compare with field tema dose
( _f rate information.
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OFFSITE DOSE PROJECTIONS RDACS COMPUTER CHANGE:
METHOD IN 9.0 INSTRUCTIONS NY 9.1.
RDACS OPERATIONS - AUTO MODE NOTE Sections 9.1 describes the use of RDACS in the Auto Mode with no additional problems noted (i.e., unmonitored release, loss of SPING). Refer to additional sections within Section 9.0 to perform other functions as necessary.
If the Auto Mode fails prior to or during any plume processing, refer to section 9.3 If while you are in AUTO Mode, an unmonitored release is detected, go to Section 9.3 9.1.1 Control Room - Initial Dose Assessment A.
The RnACS continuously monitors meteorological and i
SPING data at-ANO.
The Control Rooms (U1/U2) terminals may be used at any time to display SPING status for any of the 11 SPINGS. To observe the current SPING status and radiological parameters,'the user must select Option 3, " System Status", ' from the Gaseous Effluent Monitor Main Menu.
B.
Under normal conditions, the RDACS terminal in the
['
control Room will be displaying either the Gaseous Effluent Monitor Main Menu or the System Status
\\
display. The Control Room terminals have been designed to audibly alarm and flash an alann message whenever any of the following conditions are met:
1.
Tech Spec Limit Exe'd - Alarm Log Entry Generated SPING indicates measured levels above the a.
alarm / trip setpoint b.
Power to a SPING is lost c.
SPING indicates downscale failure d.
SPING controls are not set on the operate
. mode.
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'(!P ~}J 9.1.1 Control Room - Initial Dose Assessment'(Continued) ~
,Q._
2.
EAL Report Generated Site total dose rates are nearing or exceeding emergency classification limits.
3.
New Update Available Emergency Dose Calculations are complete and.an RDACS Report and plume map may be accepted.
4.
Sustained WS > 50 MPH.
Review Procedure 1903.010 Ten minute averaged wind speeds exceed 50 MPH.
Review 1903.010 for applicable Emergency Action-
~
Level classification, if any.
C.
Under normal conditions, operations personnel in the Control Room will respond to " Tech Spec Limit Exe'd"
- l alarms by selecting option.7, " Alarm Log viewer", from.
the Gaseous Effluent Monitor Main Menu and the <FS>,
" Acknowledge Key" to silence the alarm.
D.
Whenever a release setpoint is exceeded, a message, will be shown on the top of the screen. Under these l
conditions, Nuclear Chemistry personnel will be called.
I to begin a dose assessment review.
E.
If a " Tech Spec Limit Exe'd" message /alann has not been silenced by operations when you arrive at the Control Room RDACS terminal, select Option 7,
" Alarm Log Viewer", from the Gaseous Effluent Monitor Main i
f Menu and depress the <FS>,
" Acknowledge Key".
For
- "EAL Report Generated" messages, proceed to the next step below.
F.
For "EAL Report Generated" messages, select option 5, "EAL Report" from the Gaseous Effluent Monitor Main' Menu. Depress <FS) to acknowledge _the alarm. The most q
recent EAL Report will be displayed. To print the EAL' Report depress-the <F9> key. Review the report to determine the current site total TEDE and Child Thyroid dose rates. Determine the Emergency Class and.
the basis for the Emergency Class. If it is a new Emergency Class or is different from the previous Emergency Class, report the results to the Shift Superintendent.
G.
The EAL Report is the first indication of the-current site total TEDE and Child Thyroid dose rate values and emergency class.
If the TEDE/ Child Thyroid limits are exceeded, Emergency Dose Calculations will begin and.
the dose calculations, plume display and emergency class will be available once a 10-minute segment boundary has been crossed.
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9=1.1 Control Room --Initial Dose Assessment (Continued)
H.
Continue to review the EAL Reports to ensure that an
. emergency class is'not exceeded.'If the EAL Report indicates that an Emergency Class criteria has been exceeded, provide the Shift Superintendent with the EAL Report. If site total TEDE and Child Thyroid dose rates drop below the EAL criteria, EAL Reports will no longer be generated. The EAL Report is available only o when the site total = activity exceeds one of the EAL criteria.
I.
If the TEDE/ Child Thyroid limits are exceeded and Emergency Dose Calculations are. completed, a message, "New Update Available", will be displayed on the screen. Depress
<F10> to exit the Gaseous Effluent s Monitor Main Menu and select option 1, "RDACS subsystem" from the menu.
J.
From the RDACS Subsystem Main Menu, select option 6,
" Accept New Update". RDACS will begin transferring; the plume segment data from the file server to the terminal you are working from.
K.
Upon completion of this transfer, the user: should ~
j select option 4, " Print Plume Data" from the RDACS Subsystem Main Menu.
,l l.
Select option 2, "amorgency Class Report". The j
(
current plume update number will be displayed in the red field. Depress <F9> to obtain a print out.
of the " Emergency Class. Report".
2.
As time allows, come back to the " Print Plume.
Data" menu and select-Option 1, " Routine Reports.*
Enter the " Plume Update 3hamber" that '
f you wish to print into the red field.- Then depress <F9> to print the. report. Do not allow printing " Routine Reports" delay.getting the "energency Class Report" to the Shift ~
Superintendent. Consider printing the " Routine Reports" while you are briefing the Shift Superintendent on the "amargency class Report,"~
" Plume Map" and " Protective Action Reocamnendation.
- l 3.
You may also display.this information to the screen by selecting option 3, " Display Plume Data"'on the RDACS Subsystem Main Menu.
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" 9.1.1 '
Control' Room - Initial Dose Assessment (Continued) l
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/
l L.
.Once the printout is completed, return to the RDACS j
Subsystem Main Menu, depress ~<F10> twloe and. select l
Option 7, " Draw Plume Map". A plume map will be-displayed on the screen along with additional TEDE radiological data and meteorological information.
1.
To select the plume map type - Depress <F4) to :
cycle through the TEDE and Child Thyroid plume maps. Select the plume map type upon which the
" Emergency Class Report" is based.
2.
Then depress <F5> to cycle through the 1 mile; 10 mile and 50 adle maps. Select the map size which displays the best view of the plume. To print the-map, depress <F9>. Then depress <F10> to exit.
M.
Once you have obtained an RDACS Routine Report and Plume map,. select option 5, " Protective Action Recommendation" from the RDACS Subsystem Main Menu and perform the following steps:
NOTE Movement on the PAR screen requires the use of the < TAB > key.
Data must be entered into the appropriate highlighted areas before RDACS will allow you to proceed to the next step.
The Average Release Rate Factor and Expected Release Duration will have to be estimated. Request these estimates from the Shift Superintendent
'l 1.
Average Release Rate Factor -
If the release has stopped, then enter "1".
a.
Then depress < Tab >.
b.
If the release is continuing, request that the Shift Superintendent evaluate the event i
and estimate if'the release "will continue
.i at the same rate, increase, or decrease".
-Quantify the estimate, e.g. if the release is expected to double then enter a-factor of "2". Then depress < Tab >.
i c.
If unknown, enter a f actor of "1". Then depress < Tab >.
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/ ~3 9.1.1 Control Room - Initial Dose Assessment (Continued)
- (,/ -
2.
Expected Release Duration - Enter duration in hours (20 rdnutes should be entered as 0.3 hr.)
a.
If the release has stopped, use the actual release duration in hours. Then depress
< Tab >.
.b.
If the release is continuing, request that the Shift Superintendent evaluate the event and estimate "how much longer the release will continue".
Enter the estimate in hours and then depress.< Tab >.
c.
If unknown, enter 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. Then depress
< Tab >.
3.
Current Sky condition - If unknown, move the cursor to the " overcast" bracket using the arrow' keys and then depress the < SPACE) bar.
4.
Wind Direction - Automatically entered.
You may overwrite these values as required.
1 5.
Centerline Dose Rates - Automatically entered.
i You may overwrite these values as required.
l b
6.
Depress the <F2> key to calculate a Protective
.g Action Recommendation (PAR).
7.
Print the calculated PAR by depressing the <F9>.
i I
key.
N.
Remove the last sheet of the RDACS Routine Report, which is the "RDACS/ Field Data Comparison Sheet", and throw away. This sheet is only used by the Dose Assessment Team.
O.
Review the RDACS report, plume map and PAR printed with the-Shift Superintendent and have the Shift Superintendent sign the PAR and the approval sheet at the end of the reports.
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9.1.1
. Control Room - Initial Dose Assessment (Continued) i T /
P.
Following the initial generation of the plume segment data plume map and resulting PAR,' continue to monitor the release until either the release has stopped or the DAT has assumed responsibility for dose assessment.
]
1.
If the "New Update Available" alarm is displayed, depress <F10> to return to the "RDACS Subsystem i
Main Menu" and' repeat steps J - P of this section.
2.
You may choose to monitor the release using.other RDACS procedure sections.'If, while you are j
monitoring other data, the "New Update Available" alarm is displayed, select option 1, "RDACS subsystem Main Menu" from the Gaseous Effluent Monitor Main Menu and repeat steps J - P of this section.
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,p 9.1.2 Emergency Operations Facility - Dose Assessment Team
- A /:
A.
-The Dose Assessment Team will be activated at an Alert m
or higher emergency class'and will report to the Emergency Operations Facility (EOF).
a B.
Once the Dose Assessment Team has been activated and j
is ready to assume the. dose assessment responsibility, obtain the RDACS key from the EOF emergency kit and unlock the RDACS terminals in Room 262.
Both RDACS terminals located in Room 262 of the EOF should be i
powered up at this time along with their connected printers.
NOTE
-l Powering up both RDACS terminals allows one terminal to be used for forecasting / trend plotting.
2 C.
Once powered up, the Gaseous Effluent Monitor Main 1
Menu will be displayed on the screen.
Select either:
- l 1.
option 1, "online Live Mode" for emergencies.
1 or l
2.
option 2, "offline Drill Mode" for drills or exercises.
D.
If a flashing message, "New Update Available", appears at the top of the screen, then either TEDE or Child Thyroid dose rate limits have been exceeded and plume j
segment data is ready to be accepted by the user.
j Proceed to Step G below, otherwise, continue with Step
]
E.
3 j
E.
If there is no flashing message on the screen j
indicating that plume segment data has been' calculated, then monitor the SPINGs for any increased activity using the " System Status" menu option on the Gaseous Effluent Monitor Main Menu.
If a release message indicating that an EAL Report is available appears on the screen, review the EAL Report by selecting option 5, "EAL Report" from the Gaseous Effluent Monitor Main Menu. A printout may be obtained by selecting the <r9> key.
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9.1.2-Emergency operations racility - Dose Assessment Team
' \\~ / c (Continued) l F.
Continue to monitor the EAL Report for the site 'otal J
TEDE/ Child Thyroid. values.
l G.
Once the site total TEDE or Child Thyroid liuits have been exceeded, Dmergency Dose Calculations will begin in RDACS. Once these calculations are available to i
the user, a flashing message, "New Update Availsble" l
will appear on the screen. Select Aption 1, "RLACS Subsys tem", from the Gaseous Effluent Monitor Main Menu.
H.
Select Option 6, " Accept New Update",,from the RDACS Eubsystem Main Menu. This option transfers the currently stored plume parameter data from the file server to the terminal being used. This operation may take several minutes to complete.
I.
Select Option 4,'" Print Plume Data", from the RDACS i
Subsystem Main Menu.
1.
Obtain two copies of the " Routine Reports" and plume map for:
a.
Dose Assessment Supervisor o
3.
RE.
i k-i s
J.
Select option 1, " Routine Reports" from the Print '
Plume Data Menu, then enter the plume update number J
you want to print and depress <r9> to obtain the print out.
The user may also display this information to the screen by proceeding through option 3,
" Display Plume Data" on the RDACS Subsystem Main Menu as opposed to the Print Plume Data option.
i K.
Remove the last page from the RDACS Routine Report, which is the "RDACS/ Field Data Comparison Sheet", and route this sheet to the DAT Map Maker.
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METHOD 9.1.2 Emergency Operations Facility - Dose Assessment Team (Continued)
-k L.
Once the printout is completed,' depress <F10) twice to return to the RDACS Subsystem Main Menu, and select option 7, " Draw Plumme Map". A plume map will be displayed on the screen along with additional TEDE radiological data and meteorological data.
1.
To select the plume map type - Depress <F4) to cycle through the TEDE and Child Thyroid plume maps. Select the plume map type upon which the
" Emergency Class Report" is based.
2.
Then depress <F5> to cycle through the 1 mile, 10 mile and 50 mile maps.
Select the map size which displays the best view of the plume. To print the map, depress <F9>.
Then depress <F10> twice to return to the "RDACS Subsystem Main Menu" M.
Once you have obtained an RDACS Routine Report and Plume map, select option 5, " Protective Action Recosamendation" from the RDACS Subsystem Main Menu.
Perform the following steps:
NOTE Movement on the PAR screen requires the use of the < TAB > key. Data must'be entered into the appropriate highlighted areas before RDACS will allow you to O
proceed to the next step
~
1.
Average Release Rate Factor - Request the forecasted average airborne radioactive release rate for the duration of the release, based upon configurations of system temperature, pressure, planned _ remedial actions, probable failures, etc.
from the Dose Assessment Supervisor. Enter a factor (e.g. if expected to double ' then enter a factor of 2.
If unknown, enter a factor of "1".
l 2.
Expected Release Duration - Enter known release duration in hours (e.g. if 15 minute release, enter.25).
If unknown, enter 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
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-I 9.1.2 Emergency Operations Facility - Dose Assessment Team -
f (Continued) 3.
Current Sky Condition - Move the cursor to the correct bracket using the arrow keys and depress the < SPACE > bar.
4.
Wind Direction - Auton.4tically entered. You may overwrite these values as required.
I 5.
Centerline Dose Rates'- Automatically entered.
You may overwrite these values as required.
i 6.
Depress the <F2> key to calculate a Protective ~
Action Recommendation (PAR).
]
7.
Print the calculated PAR by depressing the <F9>
key.
N.
Review the RDACS report, plume map and PAR printed i
with.the Dose Assessment Supervisor (DAS).-
0.
Following the initial generation of the plume segment data, plume map and resulting PAR, ROACS will alert j
the user whenever the next plume segment data is j
available by flashing a "New Update Available" message i
at the top of the screen.
Return to the "RDACS j
Subsystem Main Menu" by depressing (F10> then repeat.
t Steps H - O at the' frequency prescribed by the Dose
[
Assessment Supervisor.
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9.2 RDACS OPERATIONS - FORECASTING '
- \\,}!
- t NOTE Section 9.2 should be performed.using the additional RDACS i
terminal available to the Dose Assessment Team which is not being used'as the primary RDACS terminal.
RDACS will allow the user to forecast for a maximum time period-of 23 hours2.662037e-4 days <br />0.00639 hours <br />3.80291e-5 weeks <br />8.7515e-6 months <br /> and 59 minutes at one time.
9.2.1 Obtaining a Site Release Rate Forecast.
A.
Obtain 2 copies of Form 1904.002E, " Forecasting Worksheet".
B.
Write the current hour in the first hourly block on l
line "la".
Write subsequent hours sequentially in the remaining line "la" blocks until a 24-hour period is covered (use 2 forms), or out as far as a forecast projection has been requested.
C.
Transfer the site total release rates (Particulate, Iodine and Noble Gas) from the most recent RDACS Plume Segment Data Report, Page 1 of 2, to lines 2, 3 and 4 of Form 1904.002E.
D.
Obtain forecasts of the expected site total release rates from the Dose Assessment Supervisor for the expected duration of the release or 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, whichever is shorter. Record these values in each hourly time block on lines 2, 3 and 4 of Form.
i 1904.002E.
{
9.2.2 Meteorological Forecasting A.
Obtain the most recent meteorological forecast for the Russellville area (Pope County) from one of the i
following sources listed in order'of preferences 1.
Weather Services International (Refer to Procedure 1904.008)
.q I
2.
National Weather Service - Meteorologist-in-Charge (834-0308 or *834-3955*)
3.
KARV Radio (968-1184)
J 4.
Entergy Dispatcher.(*536-6935*)
i The material contained within these symbols (*) is proprietary or private-information.
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METHOD Ls 9.2 RDACS OPERATIONS - FORECASTING (CONTINUED)
).
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B.
Record the forecast obtained on the bottom of Form 1904.002E in the " Current Weather Forecast" section.
[
C.
Complete the " Cloud Cover" blocks on line 5 of Form 1904.002E with either "CLR",
"PC" or "OVC" based upon the current weather forecast for the duration of the release. Use'the following groupings of forecasting terms:
1.
"CLR" = clear skies, fair, sunny, mostly clear or mostly sunny.
2.
"P.C." = partly cloudy, partly sunny.
3.
"OVC" = overcast, mostly cloudy, considerable cloudiness.
[
NOTE Daylight savings time runs from the first Sunday in April to the last Sunday in October 4.
TODAY 0600 to 1800 Standard Time 0700 to 1900 Daylight Saving Time
/~'s 5.
TONIGHT 1800 to 0600 Standard Time j
( J-1900 to 0700 Daylight Saving Time 6.
TOMORROW 0600 to 1800 Standard Time 0700 to 1900 Daylight Saving Time TOMORROW NIGHT 1800 to 0600 Standard Time 1900 to 0700 Daylight Saving Time D.
Complete the " Forecast Stability Class" boxes on line
)
6 of Form 1904.002E with the appropriate stability classes from Attachment 1 based upon the current forecast cloud cover and times of occurrence.
l E.
Based upon the current weather forecast, complete the
" Forecast Wind Speed" and " Forecast Wind Direction" lines 7 and 8, on Form 1904.002E for the duration of the release.
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9.2 RDACS OPERATIONS - FORECASTING (CONTINUED) t ).
F.
Group together into " Time Blocks" sequential hours during which the release rate and meteorological parameters all fall within the following tolerances of the first hour in the block: wind direction, i 10*;
wind speed, il MPH under 5 MPH and i 20% over 5 MPH; stability class, no changes and site total particulate, iodine, and noble gas release rates, all 120% of their values in the first hour of the time block.
G.
Transcribe the data for these " Time Blocks" into the i
" Time Block Summary" on Form 1904.002E. The characteristics of each time block are those of the first hour in the block. The duration is the total number of minutes in the block.
9.2.3 Dose Forecast Processing A.
From the RDACS Subsystem Main Menu, select Option 8,
" Switch Operating Modes".
B.
Select the <F1> key to get a listing of the possible modes.
C.
Using the cursor keys, move to the " FORECAST" selection and then <CR>.
(V,
Enter the number of updates that have previously been D.
calculated in " Auto Mode"'so that they may be transferred to the forecast files, then depress <F2>.
When this transfer is completed, depress <r10> to return to the RDACS Subsystem Main Menu.
If no updates have been calculated, then Initialize RADCS to i
remove old data.
E.
Select Option 2,
" ENTER PLUME UPDATE".
F.
From the ENTER PLUME UPDATE MENU, select Option 1,
" UPDATE PARAMETERS & METEOROLOGY".
G.
Using the completed Form 1904.002E, " Forecasting Worksheet" enter the termination time of the first t
" TIME BLOCK" listed on line "9B" neat to the TIME STAMP of current update request, then <CR>.
]
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9.2.3 Dose Forecast Processing (Continued)
'I
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H.
' Enter the stability class,. wind speed'and wind direction using lines 14, 15 and 16 of Form 1904.002E.
(Wind speed and wind direction should be the same for both meteorological stations.
See Attachment 3 to' select the correct sigma theta value for the stability class.)
I.
Select the <F2> key to enter the meteorological data-for the first time block.
J.
Return to the ENTER PLUME UPDATE MENU by selecting the
<F10> key.
K.
If an unmonitored release is involved in the current release from site, select option 3, " Releases From Unmonitored Points", otherwise, continue with' Step L.
g L.
If no unmonitored release is involved in the current I
release from site, select option 2, " Releases From Monitored Points".
i M.
Select the point from which the worst release is occurring from site and enter the release rates for-particulate, iodine and noble gas listed on lines 11, 12 and 13 of Form 1904.002E.
Enter this data by selecting the <F2> key.
l O
N.
Return to the ENTER PLUME UPDATE MENU" by selecting
<F10>.
o.
Select option 7, "Emeoute Model".
j i
P.
Repeat Steps F - o for each summary time block listed j
on Form 1904.002E.
j I
Q.
Once all of the. time blocks have been entered, return' to the RDACS Subsystem Main Menu and select option 4,
" Print Plume Data".
R.
Perform sections 9.1.2.J through 9.1.2.M of this procedure to obtain an RDACS Routine Report, plume map and PAR for this forecasted release.
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- l JD 9.3 RDACS OPERATIONS - EACKUP MODE
. kJ -
NOTE l
Once the backup mode is used for processing plume updates, RDACS does not allow plume segments to be transferred from Backup Mode l
to Auto Mode.
j U--
'This section will only be used whenever RDACS has failed in the-Auto Mode due to a loss of certain primary functions-(e.g., loss of both file servers or LAN) or an "unmonitored" release is involved. The user will be alerted whenever the Auto Mode is-lost by a displayed failure message on the screen upon startup or a
-loss of update messages expected every 10 minutes while operating l
RDACS.
If an unmonitored release and a monitored release occur simultaneously, the release rates for.the effected sping(s) can be obtained from the " Release Parameters" printout (9.3.1.B)..These values should be entered per section 9.3.4.F under " Release from Monitored Points" and updated for each report printed.
]
9.3.1 Determine Current Release Rates and Meteorological Data NOTE If operating RDACS from the Alternate EOF, proceed to Section '
9.10_to obtain Release Rate and Meteorological Data.
l i
A.
If you have not determined the release rates, refer tot 1.
Initial Dose Assessor The Quick Reference Guide on page 4 of 1904.010, "Unmonitored Releases" and select the appropriate.worksheet. Complete the worksheet to determine release rates.
2.
Dose Assessment Team The Quick Reference Guide on page 5 of 1904.011, "Unmonitored Releases" and select the appropriate worksheet. Complete the worksheet to deterndne release rates.
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1 9.3 RDACS OPERATIONS - BACKUP MODE (CONTINUED)
B.
Obtaining Meteorological Data 1.
If Meteorological Data is available'from RDACS s.
-Obtain a print out of the current 10 minute averoged Meteorological Data from the Control Room.RDACS-terminal, select Option 6, " Data Display" from the Gaseous Effluent-Monitor Main Menu.
b.
Select Option 3, " Release Parameters". The 10 minute average release rate data for all' 11 SPINGS and the onsite meteorological data-3' will be displayed on the screen. Print this page by selecting <r$>.
2.
If the meteorological data is unavailable from I
RDACS a.
Obtain Current Meteorological Data and~.
record on 1904.005A to ensure the data is r
available later for entry into the model.
(1)
If the onsite meteorological system is in service, meteorological data may be obtained from Recorders WDR 9300, WSR O
9300 and AAR 9300 located in the Unit-1 Control Room Cabinet C29.
Record this data on Form 1904.002A.
(2) If the onsite meteorological system 'is out of service, obtain the current wind speed and wind direction from the Dardanelle Dam Corp of Engineers (*968-500B*)- or the Russellville Airport (968-2360) and determine the appropriate stability class using Procedure 1904.005, " Atmospheric Stability Class Detemnination". Record these values on Fo'rm 1904.005A.
C.
Dose Assessment Team - Report all results to the Dose Assessment Supervisor D.
The calculated release rates and meteorological data will be entered into the model later in this'Section~
9.3.4 after switching to Backup and Initializing in f
9.3.3.
1 Tht material contained within these symbols (*) is proprietary or private information.
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.,I 9.3 RDACS OPERATIONS - BACKUP MODE (CONTINUED)
/
- \\J
~
9.3.2 To switch to " Backup" l
A.
Select option 1, "RDACS Subsystem Main Menu", from the Gaseous Effluent Monitor Main Menu.
B.
Select option 8, " Switch operating Modes", from the j
RDACS Subsystem Main Menu.
l C.
Depress <Fl>, using the cursor key, move to " Backup".
Then select by depressing <CR>:
1.
If you are starting up RDACS initially or if no updates have been calculated previously in " Auto j
Mode", enter "0" into the plume update number j
field, then select <F2> to complete the switch to
" Backup".
Depress <F10> to return to the "RDACS Subsystem Main Menu", and proceed with Section 9.3.3.
Or 2.
If updates have been calculated previously using the " Auto Mode", then enter the total number of updates previously calculated, depress <F2> then i
depress <F10> to return to the "RDACS Subsystem Main Menu", and proceed with Section 9.3.4.
p
-\\~)
9.3.3 Initialize RDACS as follows:
j A.
From the RDACS Subsystem Menu, select option 1, " Initialize RDACS".
B.
To select " Initialize", depress the "Y" key.
C.
To enter the initializing date and time.
1.
Enter the current date into the "Date Field",
then depress < Tab >.
2.
Enter the " Release Start Time" in the " Time 1
Field", then the cursor will return to the j
"Yes/No" field.
3.
Complete initializing by depressing the <F2> key.
RDACS will return to the "RDACS Subsystem Main Menu".
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= OFFSITE DOSE PRNECTIONS RDACS COMPUTER CHANGE:
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..'9.3 RDACS OPERATIONS - BACKUP MODE:(CONTINUED).
(
4 V;
- 9. 3. 4 '
Enter the values'obtained for release rate and meteorology by performing the following:
A.
From the RDACS Subsystem Main Menu, select:
Option 2, " Enter Plume Update".
B.
Select Option 1, " Update Parameters and. Meteorology".
t C.
For the " Current Update Time":
1.
If the release has stopped, enter the~ release stop time or the time that gives an update
-interval equal to the total release time, then depress <CR> and proceed to Section D below.
2.
If the release is continuing, enter the approximate time of the data which was used for the release rate worksheet calculation. Then depress <CR>.
D.
Enter Windspeed (mph), Wind Direction (Degrees from),
and Atmospheric Stability Class from either of the following sources:
1.
Meteorological Data from the RDACS printout.of-O
" Release Parameters".
For Monitored releases use data from the 57 a.
meter tower.
b.
For Unmonitored releases use data'from the 10 meter tower.
Or 2.
Meteorological Data from Form 1904.005A,
" Determining Atmospheric Stability".
3.
If necessary, use 1904.002, Attachment 3 to select the Sigma-Theta that corresponds to the current stability class.
E.
Once the entries have been made, depress <F2>.
Then depress <F10> to return to the " Enter Plume Update" menu.
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9.3 RDACS OPERATIONS BACKUP MODE (CONTINUED)-
F.
Depending upon the previously determined release pathway (s), select one or boths i
Option 2, " Release From Monitored Points".
Option 3, " Release Frosa Unmonitored Points".
j G.
Enter the release rates for particulate, iodine,'and noble gas.and depress <F2>.
H.
If a release has terminated, remove the applicable release rates before processing the next update.
I.
Depress <F10> to return to the " Enter Plume Update J
Menu".
J.
Select Option *l,
" Execute Model".
K.
Depress <F10> to return to the "RDACS Subsystem Main Menu".
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9.3.5 Print Reports A.
Initial Dose Assessor - From the "RDACS. Subsystem Main Menu", selects 1.
Option 4, " Print Plume Data".
2.
Then select Option 2, " Emergency class Report".
The current plume update number will be displayed in the red field. Depress <F9> to obtain a-printout of the " Emergency Class Report".
3.
As tir. 411ows, come back to the " Print Plume a
Data" menu and Select option 1, " Routine Reports". Enter the " Plume Update Number" that you wish to print into the red field. Then depress <F9> to print the report. Do not allcw printing " Routine Reports" to delay getting the
" Emergency class Report " to the' Shift Superintendent. Consider printing the " Routine Reports" while you are briefing the Shift Superintendent on the " Emergency Class Report",
" Plums Map" and " Protective Action Recommendation".
4.
You may also display this~ information to the 1/""%
screen by selecting Option 3, " Display Plume I
- (,)
Data" on the "RDACS Subsystem Main Menu".
5.
Once the printout is complete, depress <F10>
twice to' return to the "RDACS Subsystem Main Menu". Then select option 7, " Draw. Plume khp". A plume map will be displayed on the screen along with additional TEDE/ Child Thyroid radiological j
data and meteorological information.
J a.
To select the plume map type - Depress <F4>
)
to cycle through the TEDE and Child Thyroid ~
j plume maps. Select the plume map type upon-which the " Emergency Class Report" is based, b.
Then depress <F5> to cycle through the 1 mile, 10 mile and 50 mile maps. Select the map size which displays the best view of the
)
-plume.
c.
To print the map, depress <F9).
d.
Then depress <F10> to the "RDACS Subsyster Main Menu" e.
Go to 9.3.6 to obtain PAR.
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9.3.5 Print Reports (Continued)
B.
Dose Assessment Team -
1.
From the "RDACS. Subsystem Main Menu", select:
Option 4, " Print Plume Data".
t 2.
From the " Print Plume Data" menus Select option 1,
" Routine Reports" and depress
<CR>.
Then enter the " Plume Update Number" tFa you wish to print, into the red field and depress
<CR>.
Depress <F9> to obtain a complete printout of the -
current Emergency Class and. dose information, printout of the " Emergency Class Report".
You may also display this information to the screen by selecting option 3, " Display Plume Data" on-the "RDACS Subsystem Main Menu".
Obtain two copies of the " Routine Reports" and
" plume Map".
One copy will be used by the l
DAT/DAS and the other copy will be used by the REAM / REAM Assistant.
3.
DAT Projection Operator should remove the last V[3 page from the " Routine Reports", which is the "RDACS/ Field Data Comparison Sheet", and route j
this sheet to the DAT Map Maker.
j 4.
Orace the printout is complete, depress <F10>
l twice to return to the "RDACS Subsystem Main j
Menu" 5.
Then select Option 7, " Draw Plume Map".
a.
To select the plume map type - Depress <F4>
to cycle through the TEDE and Child Thyroid plume maps.
Select the plume map type upc:
which the '" Emergency Class Report" is based.
b.
Then depress <F5> to cycle through the 1 mile, 10 mile and 50 mile maps.
Select the map size which displays the best view of the
- plume, c.
To print the map, depress <F9>.
d.
Then depress <F10> to return to the "RDACS Subsystem Main Menu".
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9.3.6 Calculate Protective Action Recommendation ( PAR)
NOTE Movement on the PAR screen requires the use of the < TAB > key.
Data must be entered into the appropriate highlighted areas before RDACS will allow you to proceed to the next step.
The Average Release Rate Factor and Expected Release Duration will have to be estimated. Request these estimates from the Shift Superintendent.
A.
Once you have obtained an RDACS " Emergency Class Report" and a " Plume Map", select Option 5,
" Protective Action Recommendation" from the RDACS Subsystem Main Menu and perform the following steps:
1.
Average Release Rate Factor -
a.
If the release has stopped, then enter "1".
Then depress < Tab >.
b.
If the release is continuing, request that the Shift Superintendent /DAS evaluate the event and estimate if the release "will continue at the same rate, increase, or decrease". Quantify the estimate, e.g. if the release is expected to double then enter
'N a factor of "2".
Then depress < Tab >.
c.
If unknown, enter a factor of "1".
Then depress < Tab >.
2.
Expected Release Duration - Enter duration in hours (20 minutes should be entered as 0.3 hr. )
a.
If the release has stopped, use the actual release duration in hours. Then depress
< Tab >.
b.
If the release is continuing, request that the Shift Superintendent evaluate the ever.t and estimate "how much longer the release will continue".
Enter the estimate in hours i
and then depress < Tab >.
c.
If unknown, enter 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. Then depress
< Tab >.
l 3.
Current Sky Condition - If unknown, move the I
cursor to the " Clear Skies" bracket using the arrow keys and then depress the < SPACE > bar.
a
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9.3.6 Calculate Protective Action Recommendation (PAR)
(Continued) 4.
Wind Direction'- Automatically entered.
You may overwrite these values as required.
5.
Centerline Dose Rates - Automatically entered.
You may overwrite these values as required.
6.
Depress the <F2> key to calculate a Protective Action Recommendation (PAR).
7.
Print the calculated PAR by depressing the <F9>-
i key.
B.
Initial Done Assessor - Remove the last sheet of the RDACS Routine Report, which is the "RDACS/ Field Data Comparison Sheet", and throw away this sheet.
For the initial PAR and subsequent PARS that change, review the " Emergency Class Report" and PAR with the shift Superintendent and have the Shift Superintendent sign the PAR and approval sheet at the end of the reports.
C.
Dose Assessment Team - Remove the last sheet of the RDACS Routine Report, which is the "RDACS/ Field Data comparison Sheet", and route this sheet to the ' DAT Map Maker. Then review the RDACS reports, plume map and PAR printed with the DAS'and have the DAS sign the PAR s.,/
and the approval sheet at the end of the. reports.
D.
Following the initial generation of plume segmentL data, continue to monitor for releases. As either time allows or as the unmonitored release changes, return to Section 9.3 and repeat steps 9.3.1, 9 '. 3. 4,
9.3.5, and 9.3.6.
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9.4 DETERMINATION OF CURRENT RELEASE RATE AND METEOROLOGICAL CONDITIONS NOTE If the Control Room RDACS terminal is not-operable, proceed to
' step 9.4.2 of this section.
9.4.1 If the SPING data and the meteorological data is available from the RDACS Control Room terminal, obtain the current 13 minute averaged SPING and meteorological data from the Control Room RDACS terminal, by selecting option' E, " Data Display", from the Gaseous Effluent. Monitor Main Menu.
A.
Obtaining Radiological Release Rate / Meteorological Data 1.
Select option 3, " Release Parameters". The 10 minute averaged release rate data for all 11 SPINGS and onsite meteorological parameters will be displayed on the screen.
Print this page by selecting the <F9> key.
2.
Report all results to the Dose Assessment Supervisor if dose assessment is being performed by the Dose Assessment Team.
[
9.4.2 If the SPING data and/or the meteorological data is
\\
unavailaole from the RDACS Control Room terminal,' perform the following sections:
A.
Obtaining Radiological Release Rate 1.
Refer to Procedure 1904.004 for determining release rates.
2.
Document all data on Form 1904.002B.
3.
Report all results to the Dose Assessment Supervisor if dose assessment is being performed by the Dose Assessment Team.
4.
Continue with Section B below.
B.
Obtaining Current Meteorological Data 1.
If the onsite meteorological system is in service, meteorological data may be obtained fr:m Recorders WDR 9300, WSR 9300 and AAR 9300 located in the Unit 1 Control Room Cabinet C29.
Record this data on Form 1904.002A.
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9.4 DETERMINATION OF CURRENT RELEASE ~ RATE AND METEOROLOGICAL CONDITIONS '
(CONTINUED) 2.
If the onsite meteorological system is~out-of-service,' obtain the current wind speed and wind direction from the Dardanelle Dam Corp of Engineers (*968-5008*) or the Russellville Airport (968-2360) and determine the appropriate stability class using Procedure 1904.005,
" Atmospheric Stability Class Determination".
Record these values on Form 1904.002A.
]
9.4.3 Obtain the estimated release start date and time.from the Shift Superintendent. Record this release start time as i
the Time Stamp of Initial Release on Form 1904.002A.
Record the Time Stamp of Current Update in the appropriate j
space in.1904.002A.
If meteorology and release rate data j
time stamps are not the same, use the release rate data 1
time as the Current Update Time.
-)
9.4.4 Dose Assessment Team - report all results to_the DAS.
i continue with 9.4.5 below.
l 9.4.5 Enter the calculated release rate and/or meteorological
]
data in accordance with Section 9.3.4 for " Backup Mode" operation or Section 9.5.4 for " Auto Mode" operation.
bU i
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The material contained within these symbols (*) is proprietary or private information.
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-A Status Change Report,(SCR) message will be displayed on lthe RDACS terminal whenever a SPING changes status (e.g.,
Good to Missing) or meteorological data is udssing and Emergency Dose Calculations (EDC) have started.
9.5.2 If a-SCR message ~ appears on the RDACS terminal,, select option 4, " status change Report", from the Gaseous Efflue-t Monitor Main Menu and depress,the.<F9) key to acknowledge the message.
9.5.3
.The user should note the following indications on'the screen:
A.
When a SPING or a meteorological data channel has changed from " Good" to " Bad", those areas will be highlighted.by blue fields.
RDACS will' continue to process using' the grevious value until the user edits this value.
If the affected SPING is not a major contributor to the site total release,'the user may wish to place certain channels on this SPING in-STANDBY (refer to section 9.5.5).
If'the SPING is a major contributor to the site total release,. refer t:
section 9.4 of this procedure to determine new-SPING/ meteorological data and then continue with.
~
section 9.5.4.
B.
When a SPING'or a meteorological data channel has changed from " Bad" to " Good",-those areas affected will be highlighted by green fields. RDACS will automatically obtain and use these values during the' next update.
9.5.4 Editing for Missing SPING/ Meteorological Data A.
Once new values.have been obtained for those SPINGS/
meteorological channels determined in Section 9.5.3, you may edit new values into RDACS'from the Status Change Report Screen.
B.
Using the cursor-keys, move to the highlighted blue
. field that you wish to edit and type in the new
.value(s).
Depress the <F2> key.
C.
Once new values have been entered into the system, RDACS'will begin using these values for the next 10.
minute update that follows.
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9.5.5 placing SPINGS in Standby Mode i
CAUTION I SPINGS should only be placed in standby when no suspected release via this SPING is expected. The user should notify the Dose Assessment Supervisor prior to performing this section.
A.
If any SPING continually initiates a status change alarm and is not considered a major contributor to the site total release, the user may desire to place the affected SPING channels in STANDBY MODE.
B.
From the Gaseous Effluent Monitor Main Menu, select Option 2, "SPING Subsystem".
C.
From the SPING Subsystem Menu, select Option 1, "SPIEG Control".
D.
Using the cursor keys, move to the SPING of choice, then enter < RETURN >.
E.
Select the channel that you wish to put on standby which was previously identified on the Status Change Report and then < RETURN >.
f-w F.
Select Option 6, " Standby-On" using the cursor arrows and then < RETURN >. Verify your selection has been displayed onto the command block on the screen.
G.
Repeat steps D-F for each SPING which is to be placed in STANDBY.
H.
Once all channels affected have been placed in STANDBY, return to the Gaseous Effluent Monitor Main-Menu by depressing the <r10> key.
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\\--vi 9.6 EDITING FOR UNMONITORED RELEASES 9.6.1 Unmonitored releases are not detected by SPING detectors or releases which the SPING can not communicate with the file.
server.
9.6.2 If an unmonitored release is occurring, go to Section 9.3.
The unmonitored release will be entered into RDACS using the RDACS " Backup Mode" as outlined in Section 9.3.
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9.7 CENTERLINE DOSE RATE ADJUSTMENTS FOR FIELD DATA - SCALE FACTORS l
CAUTIOti Perform this section only as directed by the Dose Assessment Supervisor.
Scale Factors edited in the RDACS " Auto Mode" will automatically change the values on the file server 9.7.1 Obtain the most recent RDACS/ Field Data Comparison Sheet generated with the RDACS Routine Report and record the RDACS and field data centerline dose rates on Form 1904.002D for both Noble Gas (gamma) and Iodine.
9.7.2 Divide the measured dose rates by the projected dose rates and record this value on Form 1904.002D under the M/P ratio heading for each downwind distance for which data is available, 9.7.3 If the M/P ratio is consistently larger than 2.0 or smaller than 0.5 at two or more radii, the scale factor should be changed to correspond with this deviation upon direction by 5
the DAS.
9.7.4 Average the M/P ratios for the current data and record this value in the Avg. M/P Ratio block on Form 1904.002D.
NOTE p/
y Unless previously changed, the current scale factor on RDACS will be set at 1.0.
l
~'
9.7.5 Multiply the current scale factor by the average M/P ratio and record this value as the new scale factor on Form 1904.002D.
9.7.6 From the RDACS Subsystem Main Menu, select Option 2 " Enter Plume Update".
)
9.7.7 From the Enter Plume Update Menu, select Option 4, " Dose Scale Factors".
j 9.7.8 Enter the new Noble Gas and Iodine scale factor values frem a Form 1904.002D.
9.7.9 Press the <F2> key to enter the value into the model. The message " Record Updated" should appear at the bottom left of the screen. Depress <F10> to exit the screen.
9.7.10 If in " Auto Mode" the next available plume segment will use the new dose scale factor information when calculating the j
next plume segment.
9.7.11 If in " Backup Mode" the new dose scale factor will be used when all data for the next plume segment is entered and q
(
j that segment is processed.
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k 9.8 ISOTOPIC DISTRIBUTION CHANGES CAUTION Perform this section only as directed by the Dose Assessment Supervisor.
Isotopic distributions edited in the RDACS " Auto Mode" will automatically change the values on the file server.
NOTE Each release path can be assigned individual iodine, particulate, and noble gas isotopic distributions. The gross iodine, particulate, and noble gas concentrations measured by the SPINGS for each release path are used to scale these isotopic distributions, resulting in the isotopic release rates used in the offsite dose calculations.
NOTE The calculated offsite doses can be modified substantially by changes to the isotopic distributions which would appear to be slight.
9.8.1 The isotopic distributions for a release pathway should be changed whenever new laboratory data is obtained detailing the relative concentrations of isotopes being discharged via that pathway.
m i
9.8.2 Complete Form 1904.002F for each affected release pathway
\\s ')
i for which the isotopic distribution is being revised.
9.8.3 From the RDACS Subsystem Main Menu, select Option 2, " Enter Plume Update".
9.8.4 From the Enter Plume Update Menu, select Option 5,
" Isotopic Distribution".
9.8.5 From the Isotopic Distribution Menu, select option 1,
" Monitored Points" for releases occurring from monitored points and isotopic distribution data is available for these points. Select Option 2, "Unmonitored Points" for releases occurring from unmonitored points and isotopic distribution data is available for these points.
9.8.6 Select the " Point ID" for which you wish to change the isotopic distribution by cycling through the active pathways using the <F3> key.
9.8.7 When the pathway of choice is displayed on the screen, press < ENTER >.
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h,j 9.8-ISOTOPIC DISTRIBUTION CHANGES-(CONTINUED)-
- 9. 8. 8 -
Press-<Fl>' for a menu selection of possible isotopic distribution sources.
9.8.9' Select the appropriate source by pressing the arrow keys to
)
highlight the correct option and press < ENTER > < ENTER >.
9.8.10 Enter the sample date and time for the laboratory data you wish to enter followed by < ENTER >.
9.8.11 Enter the appropriate' isotopic information next to the isotope of choice in pCi/cc.
9.8.12 When all data for particulate,' iodine and noble gas values have been entered for all monitored release points, press
<r2>.
9.8.13 The message " Record Updated" should appear at the bottom left of the screen.
9.8.14 Press <F10> twice.
9.8.15 If in " Auto Mode" the next available plume segment will use the new isotopic distribution information when calculating the next plume segment.
9.8.16 If in " Backup Mode" the new isotopic distribution will be used when all data'for the next plume segment is entered and that segment is processed.
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9.9 DATA TRENDING 9.9.1 RDACS has the capability to trend historical or current data.
9.9.2 To initiate data trending, select option 6, " Data Display",
from the Gaseous' Effluent Monitor Main Menu.
9.9.3 When the submenu appears, select option 1, " Data Trending".
9.9.4 Using the <F7> key, select the trend mode desired (i.e.,
' Auto Update or Historical).
9.9.5 The user must then enter the appropriate responses to the followingt A.
TREND NAME - Enter the name that you wish associated with the trended data (8 characters maximum) or blank for an unnamed plot.
Press < ENTER >.'
B.
DATA RESOLUTION - A submenu will appear requesting either 2 minute,.10 minute or 60 minute trending.
Using the cursor keys, move to the selected time sequence and select < ENTER >.
C.
POINT ID - Depress the <F1> key to get a listing of p,t' possible SPING/ meteorological data selections that you desire to trend. As you select your choice, a series (d
of menus will be presented to help you focus-in on your selection. Press < ENTER > and RDACS will display the current value of the trend data requested.
D.
MINIMUM VALUE - Enter the minimum value that you wish your trend to include.
If you leave this field blank, this value will be automatically selected.
Press
< ENTER >.
E.
MAXIMUM VALUE - Enter the maximum value that you wish your trend to include..If you leave this field blank, this value will be automatically selected.
Press
< ENTER >.
F.
PLOT DATA TIME FRAME - Enter the dates and times that you wish your trend to include. Once entered, depress the <F4> key to obtain or begin obtaining the trend information.
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9.9.6
' Graphing Trends A.
From the Point Trend Display screen, select the <F5>
key to graph the trend that.you desire.
B.
If your trend displays values'outside of the minimum and/ or maximum fields defined previously,'you may perform one.of two functions.to obtain those values outside of this range as described below 1.
The user may return to the Trend Display screen.
and enter new minimum / maximum values to broaden the graphed range.
2.
The user may, once : the graph is displayed,' use
-the left or right cursor arrow keys to place a bar on the graph and move this bar to a particular location on the trended data.- The value of.the point at which the bar is positioned will be displayed by depressing the <F7) key.
The user may wish to return to the Trend Display screen at this time and enter new minimum / maximum
~j values.
j i
9.9.7 Saving/ Obtaining Trend Data A.
To save. trended data, the user must depress the <F2>
key and assign a name to the trended data from the
(
Point Trend Display screen.
1 B.
To obtain previously performed trend information, the user must position the blinking cursor in_the Point f
.I.D.
blue block and depress the <F3> key.
Select "Get
.)
Trend" and then enter the name of the trend desired.
1 If'you want a listing of previously saved trends,-
depress the <F1> key to get a' listing of those' trends.
l I
PROCJWORK H.AN NO.
PROCEDURElWORK PLAN TITLE:
PAGE:
48 of 59 1904.002 OFFSITE DOSE PROJECTIONS RDACS COMPUTER m:
27 METHOD CHANCE:
9.10 Obtaining RDACS Data from the Alternate EOF NOTE In the event evacuation of the EOF to the alternate location is required, the Dose Assessment Supervisor will ensure that an RDACS terminal, modem, and associated printer are relocated to the alternate location.
9.10.1 Ensure the RDACS computer is plugged in and connected to the printer and keybcard.
9.10.2 Ensure that the RDACS computer is "ON" and in the " Drill" mode.
9.10.3 Ensure the toggle switch on the back of the modem is "ON".
9.10.4 Ensure that the modem is connected via a telephone line to a telephone jack.
9.10.5 Ensure that the cable connections are secure between the modem and the RDACS computer.
9.10.6 Ensure that the Gaseous Effluent Monitoring System Main Menu is on the RDACS screen. This is automatic upon turning on the computer.
9.10.7 Depress the < ESC > key, then select "Y" to end RDACS session. A "C:\\SST>" should appear on the screen.
9.10.8 Type TERM, then depress the < Enter > key.
This will enter the TERM program and will automatically call the file server. The operator shculd be able to hear the modem placing the call.
If the connection is made, the message
" call connected" will appear followed by "login".
If this does NOT occur, check connections and hit the < Enter > key to retry.
9.10.9 If drill data is desired, the login and password should be, "rlsdrill".
If live data is desired, the login and password should be, "rlslive".
9.10.10 Check that the Release Parameters Update screen is correctly drawn.
If it appears to contain errors such as column alignment or misplaced data then the screen can be redrawn by < ctrl >
<L>.
9.10.11 Depress the < Print Scrn> key.
The printer will NOT auto-feed the paper so it will be necessary to press the "on line" key on the printer followed by the " form feed" key and then the "on line" key again to turn the printer back on.
9.10.12 Enter < Alt > and then "Y" to exit TERM.
This should automatically return the user to the RDACS Main Menu.
If this does not occur, re-boot the computes.
9.10.13 Enter data in accordance with section 9.3, RDACS OPERATICNS
}
- BAC KU P MODE.
b
)
PRoCJWORK PLAN NO.
PROCEDufEW000C PUW TITW:
PAGE:
49 of 59 1904.002 OFFSITE DOSE PROJECTIONS RDACS COMPUTER e
27 CHANGE METHOD
~
( )\\.
\\~
'10.0 ATTACHMENTS AND FORMS 10.1 ATTACHMENTS t.
10.1.1 Attactment 1 - Typical Stability classes by Date, Time, and Cloud Cover 10.1.2 - RDACS System Configuration 10.1.3 - Sigma Theta / Stability Class Comparison l
10.1.4 - Dose Assessor's Quick Reference Backup Mode 10.2 FORMS 10.2.1 Form 1904.002A - Plume Update Parameters / Meteorology Worksheet i
10.2.2 Form 1904.002B - Plume Update Parameters / Release Rate 5
Worksheet 10.2.3 Form 1904.002D - Dose Scale Factor Worksheet 10.2.4 Form 1904.002E - Forecasting Worksheet 10.2.5 Form 1904.002F - Isotopic Distribution Documentation Worksheet i
i e
i 6
4 t
f i
.. ' ~. ; a PROCJWORK PLAN NO.
PROCEDUREJWORK PLAN TITLE:
PAGE:
60 of 59 1904.002 OFFSITE DOSE PROJECTIONS RDACS COMPUTER W:
27 METHOD CHANGE.
7 V l i -
\\,j ATTACHMENT 1 Typical Stability Classes by Date, Time, and Cloud cover l
STANDARD l Feb. 16 - Apr. 22 l l
l l
TIME FRAME I
and l
l l
l l Aug. 23 - Oct. 25 l Apr. 23 - Aug. 22 i Oct. 26 - Feb. 15 l l
l l PARTLY l l PARTLY l
l PARTLY l l
l CLEAR l CLOUDY l CLEAR I CLOUDY I
CLEAR l CLOUDY l l Midnite - 1:00 i
F l
E l
F l
E l
F l
E l
l 1:00 - 2:00 I
F l
E l
F 1
E l
F l
E l
l 2:00 - 3:00 F
l E
l F
l E
1 F
l E
l l 3:00 - 4:00 F
l E
l F
I E
I F
1 E
l l 4:00 - 5:00 F
l E
F l
E I
F 1
E l
l 5:00 - 6:00 F
l E
F l
E 1
F l
E l
l 6:00 - 7:00 l
D l
D D
1 D
I F
l E
l l 7:00 - 8:00 l
D l
D l
C l
D l
D l
D l
l 8:00 - 9:00 l
C l
D l
B l
C l
D l
D l
l 9:00 - 10:00 l
B l
C l
B 1
C l
C l
D l
l 10:00 - 11:00 1
B i
C I
B 1
C I
C I
D l
l 11:00 - Noon B
l C
1 B
l B
C C
l l Noon - 13:00 B
l C
h B
l B
B D
l l 13:00 - 14:00 H
B l
C B
l B
C D
l l 14:00 - 15:00 1
B l
C B
l C
i C
D l
l 15:00 - 16:00 i
C i
C B
l C
C D
l l 16:00 - 17:00 l
D i
D l
B l
C l
D D
l l 17:00 - 18:00 l
D l
D l
C l
D l
D D
l l 18:00 - 19:00 l
D l
D l
D l
D l
F E
l s
l 19:00 - 20:00 1
F l
E i
F l
E I
F l
E l
l 20:00 - 21:00 l
F l
E l
F l
E l
F l
E l
l 21:00 - 22:00 l
F l
E I
F i
E i
F 1
E l
l 22:00 - 23:00 i
F l
E I
F l
E l
F l
E l
1 23:00 - Midnite i
F l
E I
F l
E l
F l
E l
NOTE For overcast (OVC.) conditions, the stability class typically is "D" at all hours and seasons This stability class chart is based on Standard Time. During Daylight (Example - If it is 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> and Daylight Savings Time is currently l
being used, you must read the chart above in the 9:00-10:00 range.)
l Savings Time runs from the first Sunday in April to the last Sunday in l
October.
l
O O
lO:
L; 1il Il 1
2 3
4 5
6 7
8 9
10 11 5
an SWITCH 3
iil-8 h-3l E'
FILE FILE UI-02
~"
rliih SERVER SERVER o
/
=-
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s-T 3
N mo B
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P-4
- =
I l
E" ciOr'd 5.l.N.4
-I
- 1 o
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LOCAL AREA NETWORK-Y UE SlptLAftm 8E8 LfM 71Wemes I
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3
, -,.3 i
PROCJWOftK PLAN NO.
PROCEDURE /WOftK; ALAN TITLE:
PAGE:
$2 of $9 1904.002 OFFSITE DOSE PROJECTIONS RDACS COMPUTER m:
27 METHOD CHANGE:
\\
l ATTACHMENT 3
,c Sigma Theta / Stability Class Comparison Stability Class Sigma Theta Range Sigma Theta
- 22.5 to 30 26.3 A
17.5 to 22.4 20.0 B
12.5 to 17.4-15.0-C 7.5 to 12.4 10.0 D
3.8 to 7.4
- 5. 6 E
2.1 to 3.7 2.4 ~
F t
G
less than 2.1 1.0
- Sigma Theta value to be used to convert from Sigma Theta letter designation to Sigma Theta number designation.
P s
t I
1 l
PROCJWORK Pt.AN NO.
PROCEDURE / WORK PLAN TITLE:
PAGE:
53 of 59 m:
27 1904.002 OFFSITE DOSE PROJECTIONS RDACS COMPUTER CHANGE:
METHOD l
I Page 1 of 2 DOSE ASSESSOR'S QUICK REFERENCE BACKUP MODE NOTE This guide is intended to enable the dose assessor to quickly review the essentials of operating in backup mode.
Full step-by-step instructions can be found in section 9.3 of procedure 1904.002.
t 1.
Obtain weather
<F10> if needed to reach Main Menu option 6 Main Menu (Data Display)
Option 3 (Release Parameters)
<F9> to print
<F10) to exit 2.
Switch Modes (only on first update)
Option 1 (RDACS Subsystem Main Menu)
Option 8 (Switch Operating Modes)
<F1> to choose mode
< Enter >
<F2> to save data
<F10> to exit 3.
Initialize (only on first update)
Do NOT initialize if transferring plumes.
Option 1 (Initialize RDACS)
Use time release began for initialization time.
l l
<F2> to save data
<T10> to exit 4.
Enter Data Option 2 (Enter Plume Update)
Option 1 (Update parameters and meteorology)
Use release stop time as current update time or sample time if release is ongoing.
Check update time interval for reasonableness.
Enter Het data - TEMP not required.
<T2> to save data
<F10> to exit option 2 or 3 (Monitored or Unmonitored data)
Enter Rad. data in correct area
<F2> to save data
<F10> to exit Option */ (Execute Model)
<F10> to exit
\\
O
PROCJWORK PLAN NO.
PROCEDURE / WORK PLAN TITLE:
PAGE:
54 of El 1904.002 OFFSITE DOSE PROJECTIONS RDACS COMPUTER e
27 METHOD CHANGE:
r~s
\\b Page 2 of 2 NOTE The following printouts can be obtained in any order as determined by the-dose assessor based on conditions.
The following options can be found on the RDACS Subsystem Main Menu.
If necessary, press <F10> until this screen is displayed.
5.
Print Data Option 4 (Print Plume Data)
Option 1 for full report.
Other options as needed.
<F9) to print
<F10) to exit
<F10> again to exit Print Plume Data Screen 6.
PAR Option 5 (Protective Action Recommendation)
Enter " Avg. Release Rate Factor"
<1 situation will get better soon 1 situation expected to remain same
>l situation will get worse
< Tab >
Enter estimate for duration of release
< Tab >
Select CURRENT sky conditions. Always make this selection (spacebar) even if choosing the option currently selected. This will recalculate the
{
}
stability ratio.
< Tab >
j
<F2> to calculate Projected Doses i
<F9> to print PAR Compare projected doses to limits on printout and make changes to choices as necessary.
<F10> to exit 7.
Draw Plume Map Option 7
<F4> toggle map TYPE
<F5> toggle map SIZE
<F9> to print
<F10> to exit Normally you will return to step four (4) as necessary to enter new data and continue through the remaining steps as desired.
i
.; ; e..
Page 55 of 59 f's, PLUME UPDATE PARAMETERS
)
r 1.0
- Time Stamp of Initial Release mm/dd/yy hhsmmiss
/ /
300
- Time Stamp of current-Update mm/dd/yy hh t mmi ss
/ /
300 (Use time stamp of release data.)
Override Calculated Release Height (circle one)
No/Yes (default = no)
Manually Entered Release Height (if yes above) meters Use Vertical Ceiling Reflection (circle one)
Yes/No (default = yes)
Vertical Mixing Height Limit (default = 500) meters METEOROLOGY i
2.0 STATION 1 STATION 2 DESCRIPTION 10 METERS 57 METERS Source of Meteorology
- [1. On-Site Tower]
[2. NWS/WSI][3. Other]
(Choose one):
Time Stamp of Met Data mm/dd/yy hh:mm:ss
/ /
- 00 Reference Temperature (deg C)
(*C = 0.556[*F32])
\\s/
Delta-T (deg C)
Wind Speed (mph )
Wind Direction (deg )
Sigma-Theta (deg )
Horizontal Stability Class (A - G)
Vertical Stability class (A - G)
- Must be entered on initial update.
- Must be entered on initial and subsequent updates.
NOTE:
If the On-Site Meteorological Tower is out-of-service, obtain the windspeed, wind direction, and stability class as stated in Section 9.4.2.B.2 of Procedure 1904.002.
r
,-s f
V FORM TITLE:
FORM NO.
REV.
PLUME UPDATE PARAMETERS /M'iTEOROLOGY WORKSHEET 1904.002A 27
Page 56 of 59 r]
Time Stamp of Current Update mm/dd/yy hh:mm:ss
/ /
- 00 1
\\d RELEASE RATES Point
- Particulate
- Noble Gas Id.
Descriptor (Ci/sec)
(Ci/sec)
(C1/sec)
Flow MONITORED RELEASES SPINGS (CFM)
Ch. 1 Ch. 3 Ch. 5/7/9 M01 1/ Containment Purge E
E E
M02 1/Radwaste E
E E
M03 1/ Fuel Handling E
E E
M04 1/ Pen. & H2 Purge E
E E
MOS 2/ Containment Purge E
E E
M06 2/Radwaste E
E E
M07 2/ Fuel Handling E
E E
M08 2/ Pen. & H2 Purge E
E E
M09 PASS Building E
E E
M10 2/ Aux. Bldg. Ext.
E E
E l
M11 Low-Level Radwaste E
E E
UNMONITORED RELEASES UO1 1/ Containment Leakage (1904. 004 F) n/a E
E UO2 2/ Containment Leakage (1904. 004 F) n/a E
E UO3 Unmon. Measured Indoors (1904.004E) n/a E
E
/
UO4 Unmon. Measured Outdoors (1904.004F) n/a E
E UO5 1/ Contaminated Steam (1904.004G) n/a E
E UO6 2/ Contaminated Steam (1904.004H) n/a E
E
- NOTE - Release rates must be entered into RDACS in the units of Ci/sec.
To convert pei/cc to Ci/sec, perform the following calculation:
Ci/See = pel/cc x Flow (CFM)/2119 I
r'\\
a FORM TITLE.
FORM NO.
REV.
PLUME UPDATE PARAMETERS / RELEASE RATE WORKSHEET 1904.002B 27
e Pag 2 57 cf 59 gm.
1.0 Time Stamp of current Update mm/dd/yy hh:mmiss
/ /
- 00 2.0 NOBLE GAS SCALE FACTOR CALCULATION Measured Data (Field)
Projected Data (RDACS)
Measurement Radius /
Dose Update Dose M/P Time Sector Rate (M)
Time Radius Rate (P)
Ratio AVG. M/P Ration Current Noble Gas Scale Factor:
New Noble Gas Scale Factor = Current Scale Factor x Average M/P Ratio r
3.O IODINE SCALE FACTOR CALCUIATION Measured Data (Field)
Projected Data (RDACS)
Measurement Radius /
Dose Update Dose M/P Time Sector Rate (M)
Time Radius Rate (P)
Ratio v
e AVG. M/P Ratio:
Current Iodine Scale Factor:
New Iodine Scale Factor = Current Scale Factor x Average M/P Ratio
- One (1) unless previously changed.
PERFORMED BY
/
Initial /Date REVIEWED BY
/
Initial /Date O
FORM TITLE:
FORM NO.
REV.
DOSE SCALE FACTOR WORKSHEET 1904.002D 27
1 o
a J
\\
Page 58 of 59 i
[
HOURLY
SUMMARY
\\J 1a.
Time Frame:
From lb.
Time Frames To 2.
Particulate Re-lease Rate (Ci/sec) l 3.
Iodine Release Rate (Ci/sec) 4.
Noble Gas Release Rate (Ci/sec) 5.
Cloud Cover 6.
Stability Class 7.
Wind Speed (MPH) 8.
Wind Direction **
(from. Deg.)
i TIME BLOCK SUMHARY 9a.
Time Frame:
From 9b.
Time Frame: To
("Ni (y
- 10. Duration (Minutes) 11.
Part. Release Rate (Ci/sec) 12.
Iodine Release Rate (Ci/sec) 13.
Noble Gas Release Rate (Ci/sec) 14.
Stability Class i
15.
Wind Speed (MPH) 16.
Wind Direction (from. Deg.)
Current Weather Forecasts For " Light" winds, use 2.5 mph.
Performed By
/
Initial /Date
- For "Va riable" winds, use current wind direction from Reviewed By Met Tower.
b FORM Ti1LE:
FORM NO.
REV.
FORECASTING WORKSHEET 1904.002E 27 1
~
8 'p Page 59 of 59 Instructions 1.0 complete this Fonn (1904. 002 F) each time that the isotopic distribution is revised from the normal values.
2.0 Following the actual event or drill / exercise, ensure that the actual isotopic distribution values are re-entered into the RDACS, then sign and date the foon.
3.0 Forward this form to the Emergency Planning section at Arkansas Nuclear One.
Table I Affected Release Pathway Isotope Original Value (pci/cc)l Revised Value (pci/cc)
RU-106 0
TE-132 0
CS-134 0
CS-137 1 E+2 La-140 0
Ba-140 0
Ce-144 0
I-131 1.75 E+1 I-132 1.03 E+1 I-133 3.51 E+1 I-134 1.03 E+1 I-135 2.68 E+1 KR-85 2.00 E-1 KR-87 9.00 E+0 KR-88 1.10 E+1 XE-133 7.00 E+1 XE-135 1.00 E+1 Revised values entered on Date/ Time Signature Original values re-entered on Date/ Time Signature i
-s 1
. s,/
FORM TITLE:
FORM NO.
REV.
ISOTOPIC DISTRIBUTION DOCUMENTATION WORKSHEET 1904.002F 27
- - -