ML030220458
| ML030220458 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 01/10/2003 |
| From: | FirstEnergy Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 0301-20415 RA-EP-02245, Rev 01 | |
| Download: ML030220458 (16) | |
Text
C (7 C Control Copy Number: 1665 Davis Besse Power Station Transmittal Number: 0301-20415 Transmittal / Receipt Acknowledgement Transmittal Date: 01-10-2003 To: DOC. CONTROL DESK Mail Stop / Address: USNRC DIVISION OF EMERGENCY PREPARDNESS WASHINGTON, D.C. 20555 Document holders are responsible for control and maintenance of documents in accordance with the actions specified by this transmittal. Outdated material shall either be removed and destroyed or marked to reflect that it is superseded or voided and is no longer considered controlled.
Note: Destroy Safeguard information by shredding.
File documents in tab order as identified on the Table of Contents Contact Document Control with any questions at (419)-321-7483
C (7 (
Davis Besse Power Station Control Copy Number: 1665 Transmittal / Receipt Acknowledgement Transmittal Number: 0301-20415 Transmittal Date: 01-10-2003 Document TOC I TOC 2 Type Number Sht/Sec Changes Rev Status old EPIB PROC RA-EP-02245 C97-2719 0000 APPROVED new EPIB PROC RA-EP-02245 0001 APPROVED
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Davis-Besse Nuclear Power Station EMERGENCY PLAN IMPLEMENTING PROCEDURE RA-EP-02245 Protective Action Guidelines REVISION 01 Prepared by: Paul F. Timmerman Procedure Owner: Manager - Security Effective Date: JAN 10 2003 Procedure Classification LEVEL OF USE:
X Safety Related Quality Related IN-FIELD REFERENCE Non-Quality Related
RA-EP-02245 Revision 01 TABLE OF CONTENTS Page 1.0 PURPOSE ................ ......... .. .. ........... ...... ................... ........... ... 3 20 REFERENCES ....................... ............................... 3 30 DEFINITIONS ........................................................ 4 4.0 RESPON SIBILITIES ........... ......... ....................................................... ......... 5 50 INITIATING CONDITIONS ................. .. ............................. 5 60 PROCEDURE ............... ......................................... 6 6.1 O nsite Protective Actions ............................................................. ................. 6 6.2 Offsite Protective Actions ............................................................ 6 7.0 FINAL CONDITIONS ................................................................................. 7 80 RECORDS ............. ....................................................................... ...... .............. 7 ATTACHMENT 1 Flowchart for Determining Protective Action Recommendations ................ 9 During Core Melt Sequence ATTACHMENT 2 Protective Action Recommendations by Affected Subarea ................. 10 ATTACHMENT 3 Affected Subareas by Wind Direction ............................... 12 ATTACHMENT 4 Comparison of Offsite Sectors and Subareas .......... ............ 13 COM M ITM ENTS .......... ............................................................... ............. ........... 14
3 RA-EP-02245 Revision 01 1.0 PURPOSE 1.1 This procedure defines specific guidelines for determining protective action recommendations for emergencies involving abnormal releases of radioactivity at the Davis-Besse Nuclear Power Station (DBNPS).
2.0 REFERENCES
2.1 Developmental 2.1.1 U.S. Food and Drug Administration, Federal Register, Vol. 47, No 205, Oct 22, 1982 2.1.2 NRC IE Information Notice No. 83-28: Criteria for Protective Action Recommendations for General Emergencies, dated May 4, 1983.
2.1.3 EPA-400-R-92-001, May 1992, Manual of Protective Action Guides and Protective Actions for Nuclear Incidents 2.1.4 Anno, George, Dore, and Michael: The Effectiveness of Sheltering as a Protective Action Against Nuclear Accidents Involving Gaseous Releases, EPA 52011 001A, April 1978.
2.1.5 SAND 77-1725, Public Protection Strategies for Potential Nuclear Reactor Accidents - Sheltering Concepts with Existing Public and Private Structures.
2.1.6 Davis-Besse Nuclear Power Station Emergency Plan.
2.1.7 KLD Associates, Inc., "Development of Evacuation Time Estimates for Davis-Besse Nuclear Power Station", Revision 4, November 1991.
2.2 Implementation 2.2.1 RA-EP-021 10, Emergency Notification 2.2.2 RA-EP-02240, Offsite Dose Assessment 2.2.3 RA-EP-02520, Assembly and Accountability 2.2.4 RA-EP-02530, Evacuation 2.2.5 RA-EP-02620, Emergency Dose Control and Potassium Iodide Distribution
4 RA-EP-02245 Revision 01 30 DEFINITIONS 3.1 ALARA - As Low As Reasonably Achievable, means making every reasonable effort to maintain exposures to radiation as far below the dose limits in IOCFR20 as is practical and consistent with the purpose for which the licensed activity is undertaken.
3.2 COMMITTED DOSE EQUIVALENT (CDE) - The dose equivalent to organs or tissues that will be received from an intake of radioactive material by an individual during the 50-year period following the intake.
33 CORE MELT SEQUENCE - A situation in which the core could be uncovered and there is no means for restoring cooling to the core Without cooling, overheating and melting of the fuel will occur 34 DADS - The Data Acquisition and Display System is a computerized system which provides plant parameters, meteorology data, dose calculations, and other related programs.
3.5 EMERGENCY PLANNING ZONE(S) - The two zones that are established around a nuclear power station in which predetermined protective actions plans are needed.
3.5.1 The first zone has an approximate radius of 10 miles for the plume exposure pathway.
3.5.2 The second zone has an approximate radius of 50 miles for the ingestion exposure pathway.
3.6 EVACUATION DOSE - The dose that a potential evacuee would receive if he or she were openly exposed during the evacuation.
37 EVACUATION EXPOSURE PERIOD - The period during which those people being evacuated are exposed to the radioactive plume.
38 EXPOSURE TIME - That period of time during which the offsite population will be exposed to radiation as a result of an airborne radioactive release 3.9 LAKE BREEZE- A meteorological condition that may occur on clear, sunny days. During a lake breeze, a radioactive release can travel inland, rise, reverse course in an overhead return flow, and then return to land in a convoluted path.
3.10 MINIMUM PROTECTIVE ACTION RECOMMENDATIONS (PAR) - The minimum PAR is evacuate Subarea 1, Subarea 12, and affected downwind subareas within five miles 3.11 OFFSITE - Any area outside the Owner Controlled Area surrounding Davis-Besse Nuclear Power Station.
3.12 SAFETY PARAMETER DISPLAY SYSTEM (SPDS) - The SPDS is a group of graphic displays developed to assist with monitoring plant operations.
3.13 SECTOR - One of the 16 areas bounded by radii 221/2degrees apart into which the 10-mile EPZ is divided. Sectors are designated by the Letters A through P, excluding I and 0 Sector A is north, E is East, J is south, and N is west.
3.14 TOTAL EFFECTIVE DOSE EQUIVALENT (TEDE) - The sum of the deep-dose equivalent (for external exposure) and the Committed Effective Dose Equivalent (for internal exposure)
5 RA-EP-02245 Revision 01 40 RESPONSIBILITIES 4.1 The Emergency Director is responsible for directing protective actions for Station personnel and recommending protective actions to offsite officials for the Plume Exposure Pathway (10-mile EPZ).
42 The Dose Assessment Coordinator is responsible for collecting and analyzing offsite dose assessment data used to provide the basis for protective action recommendations.
5.0 INITIATING CONDITIONS Initiate this procedure when a declared emergency has the potential for an abnormal release of radioactivity.
6 RA-EP-02245 Revision 01 6.0 PROCEDURE 6 1 Onsite Protective Actions 6.1 1 The Emergency Director shall initiate the necessary actions to protect DBNPS personnel.
_ a. Evacuate personnel in accordance with RA-EP-02530, Evacuation
_ b. Account for personnel in accordance with RA-EP-02520, Assembly and Accountability.
_ c. Distribute potassium iodide in accordance with RA-EP-02620, Emergency Dose Control and Potassium Iodide Distribution 6.1 2 All supervisors shall ensure that appropriate safety and ALARA precautions are implemented NOTE 62
- Any condition that justifies issuing an offsite Protective Action requires a General Emergency declaration.
- Offsite Protection Action Recommendations shall be made with initial notification of a General Emergency.
6.2 Offsite Protective Actions 6.2.1 Verify a General Emergency has been declared.
6.2.2 IF the reactor is in a CORE MELT SEQUENCE, GO TO Attachment 1, Flowchart For Determining Protective Action Recommendations During Core Melt Sequence, otherwise N/A this step.
6.2.3 IF no radioactive release is in progress or imminent THEN recommend the minimum PAR (evacuate subarea 1, subarea, 12, and affected downwind subareas to 5 miles) as determined from Attachment 3, Affected Subareas By Wind Directory, otherwise N/A this step.
6 2.4 IF the Safety Parameter Display System (SPDS) is available, Refer To RA-EP-02240, Offsite Dose Calculations, for dose calculations and Protective Action Recommendations (PARs), otherwise N/A this step.
6 2.5 IF SPDS is not available, GO TO Attachment 2, Protective Action Recommendations (PARs) By Affected Subareas, otherwise NIA this step 62 6 Notify offsite agencies and the NRC of the PARs and the affected subareas using RA-EP-021 10, Emergency Notification, and Initial Notification Form If a lake breeze is occurring, the wind direction is unknown, or the wind direction is from between 1620 and 2770, inform the NRC that the release may enter Canadian territory
7 RA-EP-02245 Revision 01 6.2.7 As Radiation Monitoring Team (RMT) data becomes available, compare it to dose projections and verify that Protective Action Recommendations are adequate.
6.3 Continue to monitor radiological and meteorological conditions, and repeat Steps 6.1 and 6.2 as conditions change.
7.0 FINAL CONDITIONS Terminate this procedure when the Emergency Director, and offsite agencies determine that dose assessment and protective actions are no longer necessary.
8.0 RECORDS 8.1 The following quality assurance records are completed by this procedure and shall be listed on the Nuclear Records List, captured, and submitted to Nuclear Records Management in accordance with NG-NA-00106:
- 8. 1.1 None 8.2 The following non-quality assurance records are completed by this procedure and may be captured and submitted to Nuclear Records Management, in accordance with NG-NA-O0106:
8.2.1 None
RA-EP-02245 Revision 01 THIS PAGE INTENTIONALLY LEFT BLANK
9 RA-EP-02245 Revision 01 ATTACHMENT 1: FLOWCHART FOR DETERMINING PROTECTIVE ACTION RECOMMENDATIONS DURING CORE MELT SEQUENCE Page 1 of 1 NOTES I SUBAREAS ARE FOUND ON ATTACHMENT 4, COMPARISON OF OFFSITE SECTORS AND SUBAREAS CORE MELT2 FACTORS THAT MAY AFFECT RECOMMENDATIONS SEQUENCE IN ARE PROGRESS ISTHE RELEASE A "PUFF' RATHER THAN CONTINUOUS?
ARE THE WINDS EXPECTED TO SHIFT AND AFFECT AREAS WHERE PROTECTIVE ACTIONS ARE NOT NOW IN PLACE?
YES ISTHE PROGNOSIS FOR THE SITUATION IMPROVING, STABLE OR DEGRADING?
S~SYSTEM .
SINTEGRITY YES Is N CONTAINMENT N S~FAILURE IMMINENT OR SYES RECOMMEND EVACUATING RECOMMEND EVACUATING SUBAREAS 1. 2,6, 10, & 12. SUBAREAS 1, & 12, AND AFFECTED DOWNWIND AND AFFECTED DOWNWIND SUBAREAS TO 10 MILES SUBAREAS TO 5 MILES GO TO STEP 6.2 6 OF THIS PROCEDURE
10 RA-EP-02245 Revision 01 ATTACHMENT 2:
PROTECTIVE ACTION RECOMMENDATIONS (PARs) BY AFFECTED SUBAREA Page lof 2 NOTE- Step I A nomogram will only provide a TEDE value 1
I_ Calculate the TEDE and CDE dose rates at 0.75, 2, 5, and 10 miles using RA-EP-02240, and insert value in Column B of Table 1, IF TEDE value is < 1 Rem AND the CDE value is < 5 Rem, GO TO Step 6.
__ 2. In Column A of Table 1, circle subareas I and 12, and all of the two-mile and five-mile affected subareas determined from Attachment 3, Affected Subareas By Wind Direction.
- 3. Insert the expect release duration (in hours) in Column C of Table 1, IF unknown, use 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />
_4 Calculate the dose rate 0 75, 2, and 5 miles by multiplying the value in Column B by the value in Column C and enter dose rate in Column D of Table 1.
5
__ For the affected subarea(s) with TEDE value > I Rem and/or the CDE value
>5 Rem, THEN circle "YES" in Column F and recommend evacuation for all affected subareas circled in Column A, AND verify a General Emergency has been declared, OTHERWISE, circle "NO".
- 6. IF the affected subarea(s) TEDE value is < 1 REM, AND the CDE value is < 5 Rem AND a General Emergency has been declared, THEN recommend the evacuation of subarea I and subarea 12 and all affected downwind subareas within 5 miles as determined from Attachment 3, OTHERWISE, N/A.
_ 7. Make appropriate notifications in accordance with Step 6 2.6.
II RA-EP-02245 Revision 01 ATTACHMENT 2.
PROTECTIVE ACTION RECOMMENDATIONS BY AFFECTED SUBAREA Page 2 of 2 TABLE 1: PROTECTIVE ACTIONS AND AFFECTED SUBAREAS Distance A B C D E F From Affected Doserate Release Dose Limit Protective Action Plant Subareas (REM/hr) Duration (hr) (REM) (REM) Recommendation Yes Evacuate TEDE
> 1 No. No Action (Evacuate I if in General Emergency)
.75 to 2 miles 12 Yes: Evacuate Thyroid CDE (12) >5 No: No Action (Evacuate
- if in General Emergency)
Yes: Evacuate TEDE
_>1 No No Action (Evacuate 2-5 2 if in General Emergency) miles 6 Yes: Evacuate 10 Thyroid CDE (12) >5 No: No Action (Evacuate
- if in General Emergency)
Yes: Evacuate 3 TEDE 4 > 1 No: No Protective Action 5-10 5 miles 7 Yes. Evacuate 8 Thyroid 9 CDE (12) > 5 No: No Protective Action 11 **
- N/A CDE row if nomogram is used to determine dose rate.
I Performed by:
Date Signature
12 RA-EP-02245 ATTACHMENT 3 AFFECTED SUBAREAS BY WIND DIRECTION Revision 01
'I Page 1 of 1 NOTE
- This table was based on the inclusion of 22 1/2'
- segments on either side of the plume centerline.
IF a lake breeze is occurring or the wind direction is unknown, TIHEN select "Unknown" subareas.
OTHERWISE, record the wind direction (if known) _, and identify affected subareas for distances of 2-5 miles and 5-10 miles from the plant.
Wind Direction (from) 0 Wind Direction From 0- 2 Miles 2- 5 Miles 5 - 10 Miles 1410 to 2780 1, 12 (None) (None) 2790 to 2860 1,12 6 7,9 2870 to 2930 1, 12 6 7,8,9 2940 to 3300 1, 12 2,6 7,8,9 3310 to 0050 1, 12 2,6 5,7,8 0060 to 0130 1, 12 2,6 4,5,7,8 0140 to 0200 1,12 2 4,5 0210 to 0650 1, 12 2 3,4,5 0660 to 0720 1, 12 2 3,4 0730 to 0780 1,12 2,10 3 0790 to 1170 1,12 2, 10 3,11 1180 to 1220 1,12 10 3,11 1230 to 1400 1,12 10 11 Unknown or 1, 12 2,6, 10 3,4,5,7,8,9,11 Lakebreeze
13 RA-EP4)2245 Revision 01 ATTACHMENT 4" COMPARISON OF OFFSITE SECTORS AND SUBAREAS Page 1 of I A 0A J
18t,
14 RA-EP-02245 Revision 01 COMMITMENTS Step Number Reference Comments TERMS 0 13602 Depiction of both 22 50 sectors and evacuation subareas Attachments 1, 2 TERMS 0 13523 Combination of subareas I and 12 for protective action recommendations TERMS 0 13592 Release duration considered in projected dose calculations Attachments 1, 2,4 TERMS 0 13645 Automatic recommendation to evacuate "keyhole" Attachments 1, 2, 3, 4 TERMS 0 13920 Combine Subareas 1, 8, and 11 of Evacuation Sector Map TERMS 0 13684 Large scale EPZ map same as this attachment TERMS 0 14992 Protective Action decisions during Lake Breeze TERMS 0 13584 Provide sufficient guidance to make appropriate Protective Action Recommendations Entire Procedure TERMS Q 00780 Procedure for determining protective measures during an emergency