ML20052B109

Public Version of Revision 7 to Emergency Plan Administrative Procedure AD 1827.12, Protective Action Guidelines. Revision Index Encl

ML20052B109
Person / Time
Site:	Davis Besse
Issue date:	03/24/1982
From:	TOLEDO EDISON CO.
To:
Shared Package
ML20052B107	List: ML20052B108 ML20052B109
References
AD-1827.12-01, AD-1827.12-1, NUDOCS 8204300035
Download: ML20052B109 (17)

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AD 1827.12 Davi:2-Ecsse Nuclear Power S:ation Unit No. 1 Ad=inistrative Precedure AD 12712 C Protect,;./e Action Guidelines

'E ih g i Record of Approval and Changes Prepared by C. Doyel/V. Green 2/23/76 Date 3 /11 / 7 4, Submittcd by E _ LJ _ bMtw _

Darc g.on llaad Recommended by _F) I SIG Chairman Date

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V Na 'ger M alit / ATsurance Date Approved by _ [8 d S

~ Yatilin Superintendent Date i

1 Revision SRB QA Sta Supt.

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. 1 1 AD 1827.12.6

1. PURPOSE To define a specific set of guidelines to be folicwed in determin-ing protective actions to be taken in the event of emergencies involving radio ctivity releases at the Davis-Besse Nuclear Power Station (DBNPS).

2. REFERENCES 2.1

• 10 CFR 20, Standards for Protection Against Radiation 2.2 10 CFR 100, Reactor Site Criteria c 2.3 USAEC TID-14844, Calculation of Distance Factors for Power and Test Reactor Sites 2.4 AD 1808.00, Industrial Security Plan 2.5 Davis-Besse Nuclear Power Station Emergency Plan 2.6 AD 1827.10, Emergency Off-Site Dose Estimates 2.7 SAtH) 77-1725, Public Protection Strategies for Potential Nuclear Reactor Accidents - Shel tering Concepts with Existing Public and Private Structures 2.8 EPA Guidelines - September 1975, EPA-520/1-75-001 2.9 U.S. Food and Drug Administration, Federal Register, Vol.

43, No. 242, Dec. 15, 1978 2.10 Reg Guide 1.109, Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the purpose of l Evaluating Compliance with 10 CFR Part 50 Appendix I

3. DEFINITIONS 6 3.1 Decision Dose That value of projected thyroid dose above which evacua-tion is beneficial.

3.2 Evacuation Dose That dose that a potential evacuee would receive if he were openly exposed during the evacuation.

3.3 Evacuation Exposure Period The period during which the evacuee is exposed to tne radioactive plume.

i

3 AD 1827.12.7 The EDO shall then implement those actions for Station personnel and communicate the recommended off-site actions to the Ottawa County Sheriff's Department (or the State and County Emergency Operations Centers if they have been activated).

4.2 In order to simplify evacuation instructions for the public, evacuation " subareas" (see Figure 1) have been established by municipal and geographical boundaries.

When making evacuation decisions in an emergency situa-tion, the EDO shall consider the time available (based on plume travel speed) to evacuate the affected subarea (s),

in comparison to the estimated evacuation times as given .

in Table 1. The data sheets used in Section 6. assist in '

this process.

5 PROTECTIVE ACTION GUIDELINES 7 5.1 Recommended Protective Actions for the Plume Exposure Pathway (10 mile) Emergency Planning Zone to avoid whole body and thyroid dose from exposure to a gaseous plume:

Projected Dose (Rem) t the, Population Recommended Actions (a) Comments Whole body <1 Noplanngg) protective Previously actions. Issue an recommended Thyroid <5 advisory to seek protective shelter and await actions may further instructions. be recon-Monitor environmental sidered or radiation levels. terminated.

Whole body 1 to <S Seek shelter as a min- if con-imum. Consider evacu- straints ation. Evacuate unless exists,-

Thyroid 5 to <25 constraints make it special imp ra ctica l . Monitor considera-environmental radia- should be tion levels. Control given for access. evacuation of children and preg-nant women.

Whole body 5 and above Conduct mandatory Seeking evacuation. Monitor shelter environmental radia- would be an Thyroid 25 and above Lion levels and adjust alternative area for mandatory if evacua-evacuation based on tion were these levels. not immed:-

Control access. ately pos-sible.

1 i.

5 AD 1827.12.7 -

calculate the dose to the critical organ (s). Infants are the critical segment of the population Concentration in Milk or Water (0.5 (5 rem WB rem WB or bone: or bone: Total Intake 1.5 rem 15 rem via all Pasture thyroid) thyroid) Food & Water Grass l Preventive Emergency Pathways (Fresh Weight) 1.evel Level Preventive Emergency Preventive Emergency Nuclide* (pCi/1) (pCi/1) (pCi) (pCi) (pCi/kg) (pCi/kg) -

Cs-137 (Whole

!!ody) 0.34 3.4 7.0 70 3.5 35 Se-90 (bone) 0.007 0.08 0.2 2.0 0.7 7.0 Sr-89 (bone) 0.13 1.3 2.6 26 13 130 B. Recommended Protective Actions ,

Preventive Emergency

1. Removal of lactating Isolate food and water dairy cows from con- from its introduction taminated pasture and into commerce after substitution of uncon- considering:

taminated stored feed.

2. Substitute source of a. availability of uncontaminated water. other possible

3. Withhold contaminated actions; milk from market to b. importance of par-allow radioactive decay. ticular food in

4. Divert fluid milk to nutrition; production of dry whole c. time and effort to

! milk, butter, etc. take action;

d. availability of other foods.

l7 5.3 Representative shielding factors from airborne radio-nuclides:

~~ '

Stryp_ Lure or 1.ocation Shielding Factor *) Representative Ranee Outside 1.0 --

Vehicles 1.0 --

Wood-frame house (b) 0.9 --

[ (no basement) i

7 AD 1827.12.7 Representative ) Representative Structure or Location Shielding Letor Range One and two-story wood- 0.4(b) 0.2-0.5 frame house (no basement)

One and two-story block 0.2( ) 0.04-0.40 and brick house (no base-ment)

House basement, one or two 0.1(D) 0.03-0.15 walls fully exposed:

One story, less than 2 0.05(b) 0.03-0.7 f t of basement, walls exposed g)

Two stories, less than 2 0.03 0.02-0.05 ft of basement, walls exposed Three- or four-story structures, 5000 to 10,000 ft2 per floor:

First and second floors: 0.05(b) 0.01-0.08 '

ilasement 0.01 0) 0.001-0.07 Miltistory structures,

>10,000 ft2 per floor:

g)

Upper floors 0.001-0.02 Basement 0.01 0.005 (b) 0.001-0.015 (a) The ratio of dose received inside the structure to the dose that would be received outside the structure.

(b) Away from doors and windows.

7 5.5 Distribution of Potassium Iodide Tablets

1. The EDO will direct Station personnel to take a KI tabletif,(a}5the known iodine concentration will exceed 1 x 10 pCi/cc for greater than one hour, or (b) the total known dose to an adult thyroid will exceed 10 rems.

2. Base the distribution of KI on actual thyroid doses, not projected closes. KT is 907. ef fective i f admin-istered within one hour af ter the uptake, and 50%

ef fective if administered within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> a f ter uptake.

3. Call Radiation Management Corporation if KI is administered for further directions regarding usage.

9

.- a, ,3,e..,.e I:G21?LIS C.7 ACTIONS

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._un__.N.v;n Ingestion of food Decontam: nation, and water con- condemnation, or taminated from destruction of food; LONG TIRM the soil either deep plowing, con-

?HASE3 by resuspension de= nation, o r al-or uptake teena:e use of land throuth roots Whole body expo- Relocation, access sure from deposi- control, decontam-(over 30 days)* tion =aterial or ination, fixing of -

inhalation of re- contamination, deep suspended plowing material 3

Long Term Phase - Recovery period.

4 " Typical" Post-accident time periods. .

6.4 Small Children and ?:egnant '* omen Any time the projected whole body does is expected to exnid 500 mrem or the projecte1 thyroid <inse is expce.e:I to exceed 1.5 cem, advise the Gt:awa County Sheriff's Department to conduct an evacuation in the area of exposure of families in -hich there are pregnant wcmen or small l children.

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11. Use informa-ica f:cm I ems 1 and 10 to ge: Es ima ed svacuation :,me . . rom .ao,ue ... nours

12. Exposure Time:

Item 11 - I:em 9 = hours 50ts:.

1: Item 9 is negative, . deep in mind

-s..a minus a nega .ve

. c num'er gives a positive resul . If Item 9 is larger than Item 11, enter zero hours.

13. Evacua-ion Exposure Period (IE?):

• Take the smaller of Exposure Time (I:em 12) or

• Release Duration (1:em 4) hours it. Evacuation Dose = IEP hours x Dose Rate = (I em 13) x (I:em 2) =

REM 1000 1000

13. Sliettering Cose =

Projected Cose x S :ucture Shielding Factor (f cm 5.3) =

REM

. NOTE : Since the housing in the 10 mile Emergency ?;anning 2cne is basiesity wood homes, a structure shielding fac or of

0.9 shoul

normally be used.

.v sing ?.he above information and .,o.,cwing taste,

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determine the protective ac-ions o be recom= ended:

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a. .arojected snose (Atem 0; i.ess than a. .ev4 .-- .

nu..v3 1 rem

h. Shi itering Cose (Item 16) is grea'.e: e. SRELTER than I com but less than 5 rem

c. Sheltering cse grea e: than 5 c. I'!ACCATE rem, and Evacuation Cose (I'.cm

15) less -han Shel ering Ccse

4. Shet'.ering Ocse greater than 5 rem d. S HE *_!ER and dvacuation-Cose tec.nce

'han v: w n.a . La :s he i'.e : 'we

13 AD 1827.12.6 TA3LE 1 Evacuation Time Estimates Land S u,1,- A rca s Populati<in* Normal Adverse Severe **

1 2,775 2 hr. 55 min.

823 4 hr. 10 min.

823 15-20 hr.

2 .2,675 3 hr. 5 min.

861 4 hr. 50 min.

861 30-40 hr.

3 10,717 3 hr. 35 min.

3,242 6 hr. 30 min.

3,242 35-45 hr.

4 608 2 hr. 50 min.

608 4 hr. 15 min.

608 10-15 hr.

5 4,940 3 hr. 30 min.

• 4,940 4 hr. 30 min.

4,940 40-45 hr.

6 4,940 3 hr. 30 min.

1,506 5 hr. 10 min.

1,506 30-40 hr.

7 1,865 4 hr.

1,795 6 hr. 25 min.

1,795 50-60 hr.

TOTAL EPZ 28,484 5 hr. 15 min.

13,775 10 hr. 55 min.

13,775 75-100 hr.

Lake Sub-Areas Boaters Normal Adverse Severe 3 thru 13 Va ri es 4 he. N/A N/A Special Case ,

Pooulation No rma l Adverse Severe Port Clinton 10,128 4 hr. 45 min.

/,229 6 hr.

7.229 24-30 hr.

2L2cpulation varies due to location and transient resident variations cue to, season and unf avorable weather conditions.

• • Time ranges are provided due to the uncertain nature of severe weathe:

conditions (e.g., during a severe snow fall er blizzard, the time it takes to evacuate can vary depending on the direction and speed of the wind).

15 AD 1827.12.7 DATA SHEET 2 (Continued) g THEN 7 b. Projected Thyroid Dose greater than b. EVACUATE 5 rem but less than 25 rem CHILDREN AND WOMEN OF CHILD-BEARING AGE IF POSSIBLE,

, SHELTER

• OTHERS

c. Projected Thyroid Dose greater than c. EVACUATE IF 25 rem, but less than the POSSIBLE OR -

Decision Dose (Item 7) OTHERWISE SHELTER *

d. Projected Thyroid Dose greater than d. Perform action Decision Dose, then as follows:

1. If EEP less than Release 1. EVACUATE Duration j

2. If EEP equal to Release 2. SHELTER

• DuraLion

• SHELTER is to be with VENTILATION CONTROLLED.

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