ML20024A312

Public Version of Rev 13 to Emergency Plan Administrative Procedure AD 1827.10, Emergency Offsite Dose Estimates & Rev 177 to Rev index.W/830311 Ltr & Receipt Form

ML20024A312
Person / Time
Site:	Davis Besse
Issue date:	05/05/1983
From:	Murray T TOLEDO EDISON CO.
To:
Shared Package
ML20024A311	List: ML20024A312
References
AD-1827.10-01, AD-1827.10-1, NUDOCS 8306160679
Download: ML20024A312 (35)

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A 1 AD 1827.10.11 1 1. PURPOSE AND SCOPE 1.1 The purpose of this procedure is to estimate off-site whole body exposure rates from Xenon-133, and thyroid exposure rates to adults and children from I-131 for accidental, uncontrolled releases.

1.2 Radioactive particulate material is not addressed because protective actions are based on assuming the iodine exposure pathway is critical, and should provide sufficient protection from radioactive particulate material. (Based on information from Section 5.1.2 of EPA-520/175-001, Revised 6/79.)

2. REFERENCES .

2.1 NRC Regulatory Guide 1.4, Assumptions Used for Evaluating the Potential Consequences of a Loss of Coolant Accident for Pressurized Water Reactors l

2.2 Manual of Protective Action Guides and Protective Actions for Nuclear Incident EPA-520/1-75-001, September 1975 (Revised June 1979) 2.3 Criteria for Preparation and Evaluation of Radiological Emergency Response Plans and Preparedness in Support of Nuclear Power

[ 11'. Plants, NUREG-0654/ FEMA-REP-1, Rev. 1 2.4 NRC Regulatory Guide 1.23, Onsite Meteorological Programs

- 2.5 The Davis-Besse Nuclear Power Station Emergency Plan and EI 1300 Series, Implementing Procedures i 2.6 AD 1827.12, Protective Action Guidelines I

2.7 AD 1839.00, Station Operations

(

2.8 TED NQAM 2.9 FSAR, Section 17.2 2.10 Admin. Memo 37, ECS Pager and Telephone Numbers 11 2.11 NRC Regulatory Guide 1.145, Atmospheric Dispersion Models for Potential Accident Consecuence Assessments at Nuclear Power Plants

3. RESPONSIBILITIES In the event of the accidental release of gaseous radioactivity,

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2 AD 1827.10.13 -

the Shift Supervisor shall make an initial evaluation of the situa-tion and classify the emergency in accordance with EP 1202.37, High Airborne Activity.

3.1 For local releases, any calculation of release rates and dose rates should be done under the direction of the Shift Supervisor by:

1. An Administrative Assistant, or

2. Other qualified, available personnel.*

• The STA may perform release and dose rate calcula-tions if the STA feels that performing such calcula-tions does not interfere with his primary respon-sibilities of maintaining a broad perspective of the event and consulting with the Shift Supervisor.

Requirements for notification of other persons to deal with these types of releases are found in the EI 1300 series, Emergency Plan Implementing Procedures, and EP 1202.37, High Airborne Activity, and AD 1839.00, Station Operations.

3.2 For conditions that require Emergency Plan implementation, release rates and dose rates should be performed under the direction of the Emergency Duty Officer (EDO). The Shift Supervisor, acting as interim EDO, should designate:

1. An Administrative Assistant, or

2. Other qualified, available personnel,*

to perform these calculations. If the Emergency Control Center has been activated, the designated EDO should direct response personnel within the ECC to perform the dose calculations relieving the Shift Supervisor of this responsibility.

• The STA may perform release and dose rate calculations if the STA feels that performing such calculations does not interfere with his primary responsibilities of maintaining a broad perspective of the event and consulting with the Shift Supervisor.

4. PROCEDURE 4.1 Releases from the station vent using the prime computer, T1-59 calculator, or hand calculations.

13 1 4.1.1 The prime computer is programmed to compute offsite dose rates in accordance with EPA-520/1-75-001.

1. Logging of System L

n-, e----e,-m

3 AD 1827.10.13 (1) If terminal is turned off:

a) Depress upper half of black " power" switch located on lower right side of terminal.

b) Push " reset" button. (By pulling the keyboard forward, the reset button can

.be found on the right rear of the keyboard, directly behind the console switches.)

c) Type at the keyboard:

LOGIN T'SC -

d) Press the " return" key.

(2) If terminal is turned on:

a) If one of the following messages is displayed on the screen, follow the instructions shown:

l THE FUNCTION KEYS ARE ACTIVE -

DEPRESS fa FOR FUNCTION

SUMMARY

SI l LOGGED OUT - PUSH fb TO LOG IN b) If no messages are displayed:

(a) Press " View Alpha" key. (Top row I

of keyboard.)

(b) Type at the keyboard:

l 1

LO

{c) Press " return" key.

(d) Message will appear:

OK, LO I TSC (5) LOGGGED OUT AT TIME USED =

SESSION CHARGES -

OK, _

l l

1 4 AD 1827.10.13 (e) Follow instructions for terminal turned off, beginning with Step 2.

2. Upon logging into the system, this message will appear on the screen:

- PLEASE BE PATIENT -

- LOADING FENCTION KEYS -

- THIS WILL TAKE APPROXIMATELY 3 MINUTES -

3. Approximately three minutes later, the terminal wilJ display:

THE FUNCTION KEYS ARE ACTIVE -

DEPRESS fa FOR FUNCTION

SUMMARY

4. Depress key labeled "fa". s

5. The terminal will display the TSC menu.

NOTE: The color scheme of all menus is as a follows:

Blue - Currently available Yellow - Proposed-currently unavailable Spare -

Green - Special purpose

- 6. Depress function key assigned to " Dose Calculations".

7. Terminal will display:

THE FUNCTION KEYS ARE ACTIVE -

l l DEPRESS fa FOR FUNCTION

SUMMARY

l

8. Depress function key "fa".

9. From this point, make all program selections by use of the function keys and follow instructions given in th'e individual programs.

NOTE: The instructions within the program will enable you to display:

Calculation Inputs Dose Calculations Offsite Dose Map Met Data i

l L

~ .

5 AD 1827.10.13 The calculation inputs are received from the Modcomp, Met Tower, and the DPD 11/34. The capability does exist to hand input the release rate.

10. Ending Session at Terminal a) Return to TSC menu by use of function key "fc".

b) Depress "fb" to log out.

c) The following message will be displayed:

LOGGED OUT - PUSH fb TO LOG IN -

d) Leave terminal in this state.

4.1.2 The T1-59 is also programmed to compute offsite dose rates in accordance with EPA-520/1-75-001. See Attachment 1 for instructions.

4.1.3 Hand calculations may also be performed by completing Data Sheets No. I and No. 2.

4.2 Release from points other than the station vent.

4.2.1 To calculate the resulting offsite whole body or thyroid dose rates, insert the Ci/sec value calculated

- below into either the prime computer T1-59 calculator, or Data Sheets No. I and No. 2.

4.2.2 Releases from MSSV's, Auxiliary Feed Pump Turbine Exhaust, and Atmospheric Vent Valves.

I i 1. Calculate the release of Xe-133 from the SJAE as follows:

Release Rate (Ci/sec) = (CONV FACT)(SJAE ACT)(SJAE FLOW)

Where: CONV FACT = 6.6 E-11 (RE 1003A) or 1.2 E-11 (RE 1003B)

SJAE ACT = RE 1003A or B reading in epm SJAE FLOW = F1 1002 in efm

2. In the event of a reactor trip, quantify the gaseous release of Xe-133 and I-131 via any and all other release points using the following calculation:

, +w-- , - -

6 AD 1827.10.13 Release Rate (Ci/sec) = 6.3'E-5 (IR)(RCS Cone'n)

Where: RCS Cone'n~= latest I-131 or Xe-133 con-centratioO in the RCS in

( pCi/cc n .

3 ,

p '

x , . 1 , Jt N .. LR =,latesg Jeak rate in gpm as >

t determiced from EP 1202.57,

'N,'A14endix,Cor g' Appendix D, s y .. Step 7.

8 s N' NOTES: 1 N' I-131 and Xe-133 are expected to '

be the highest dose contributors, -

however, any radionuclide may be i used in the above calculation. -

w.

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s ~

g 2 g The above calculation conservatively g as:umes all the activity leaking ,

s to'the secondary side is escaping.

g

~

,.- That assumption is accurate if the i

1 i MSIV's go' closed for the first s

x. minute following the trip. When g i

g. the MSIV's open the calculation s M' - 's becomes more 'consehative.

t J. 3,,4

.N}

3 , Emphas[s should be placed on the -

lateM leak rate determination as it codld be reduced upon power "

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4 ;11 stum costinuey,-L9 be r-leased with the MSIV'sscpen, and the a affected S/G still not isolated, s.m, ,

a sample of the S/G steam on the ','

, affected S/G should ae collected 8 and analyzed. The following 3 compartive evaluation can be made y for radioactive release rate:

L Release Rate (Ci/sec) = 3.5 E-6 (STM FLOW)(SG STM CONC)*

[

[w Where: STM FLOWX fotal' ~ ,

% seam Flow, #/hr. (if an. -

u i estisaM.c of ateam flow cannot be

..\' determined,'usethemaximumflow oY F E46 '#/hr.)  ?

s' \

SG STM C0Yo =lC(ce:est'tation Q;%.s s of nuclide, pCi/cc

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7 AD 1827.10.13

3. If the MSIV's remained closed following a reactor trip, and three is a S/G tube leak, Xe-133 in Ci/see can be determined use RE 600 or RE 609 as follows:

1) The analyzer / gross switch must be positioned in the Gross Mode.

These switches are normally in NOTE:

the Analyzer Mode to selectively monitor N-16.

x;

" When the switches are changed to

- the Gross Mode, high alarms will 4 '

result because the setpoints were -

selected based on N-16.

'{

[ 2) Net eps readings are calculated by subtracting a 100 cpm from the actual readings. (100 cpm are the normal background readings in J

N the Gross Mode.)

i Y- While in the Gross Mode, convert the cpm

~

3) i~ readings on RE 600 and RE 609 into pCi/cc

^

Xe-133 by multiplying cpm times 1 E-5 x' _

(pCi/cc)/ cpm.

q i s O.N l }{

g. N ,x x -

i t 4) To obtain Ci/see of Xe-133 being released, multiply pC1/cc times 3.5.

o

'~ '

NOTE: Steps 1. through 4. above are based on 1 E+6 lb/hr saturated steam flow at 995 psi with a

- specific volume of 0.45 ft 3/lb, and a Bechtel to TED letter (BT-10372) dated June 4, 1980.

4.3 Use AD 1827.12 Protection Action Guidelines to determine the protective actions to be initiated. The EDO should make Plume Exposure recommendations per this procedure.

4.4 If an evacustion is initidted, it should include an area 22 1/2 to 45' each side of the plume centerline (based on Appendix I from NUREG-065-4 FEMA-RE2-1). Actual evacuations will be made using the Evacuation Sub-areas given in AD 1827.12.

4.5 If evaluations or RMT sample results indicate ingestion exposure 4

s

((y e thaf exceedi.the plume exposure evacuation area, recommendations

~

for'furthar,evacuacion should be made by the Emergency Operations

's'p( Manager in accordance wi'.h ingestion exposure Protective Action

"'M Guidelines \given in AD 1827.12.

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,., jI, 4.6 /Should the NRC request direct contact with the individual

,j performing offsite dose calculaticas, it is the responsibility 2

of the Emergency Duty Officer to ensure that the requesting NRC

', official is contacted directly by an appropriate cognizant,

-, individual. Any available phone could be used for this purpose.

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'3 s 9 AD 1827.10.13

. DATA SHEET No. 1 Estimated Downwind Whole Body Exposure from Xenon-133 (1.) Record the date Date Time and time (2.) Record Xe-133 activity RE 2024C reading CPM being released from

, the appropriate meters RE 2025C reading CPM for RE 2024C and RE 2025C t NOTE: If these readings are off scale, the Xe-133 in the Sta-

' tion Vent is to be obtained using the' Emergency Station y* Vent sampler described in AD 1850.04.

M (3.) . From Figure 1, record RE 2024C conc'n pCi/cc -

~l the corresponding il .t

. chacentration in RE 2025C cone'n pCi/cc

- s 1*CL/cc p\' (4.) Record the flow rate through the Unit Vent KCFM x 103 KCFM CN *

.from Computer Point F885 Flow rate 13 'or (F883) and couvert to from F885 CFM (F883)

(5.) Convert Unit Vent flow CFM (4.72x103) = cc/sec rate to cc/sec (6.) Calculate the estimated pCi release rate for x cc/sec =

Xe-133 by multiplying From (3.), "" From (5.)

the bishest value highest LCi sec from (3.) times (S.) value (7.) Convert release rate 6 C1) ,

(Q) in (6.) to Ci/see x (1 x 10 From (6.)

Ci/sec (8.) Record the wind direction (use 612' elev. if avail-able) from the instru- t 180* =

mentation as listed in Wind direction Downwind Table 1. Then add or direction subtract 1808 to obtain

• the downwind direction (this value should not exceed 360')

(9.) Record the wind speed (use 612' elev. if avail-able) from the instru- '**=

mentation as listed in sph x 0.447 *Ph m/sec m

Table 1. Then convert Wind the wind speed from sph Speed to m/see Page 1 of 3

-, -e,

--.-,--9-- ..r- w w. y- --.,g- - , -.mr,--- m,.-

10 AD 1827.10'.13 DATA SHEET No. 1 (Continued)

(10.) Determine Stability Class by any of the following Stability Class (a) Read AT from computer point T698 then ' rom Table 2-A, record the Stability Class, or (b) Determine ST by 321'

'F versus 612' *F then from Table 2-A, record the Stability Class, or if not avail- .

able, (c) Read the Standard *See Attachment 2,'Instruc-Deviation of Wind tions for Accessing DEC PDP 13 Direction at the 35 11/34 on G.E. Time Sharing.

meter level (612' elev.) from the PDP 11/03 printout *

(Column SD under 35M) then from Table 2-B, record the Stability Class, or, if not '

available, (d) Read the Standard Deviation of Wind Direction at the 75 meter level (821' elev.) from the PDP 11/03 printout *

(Column SD under 75M) then from Table 2-B, record the Stability Class.

(11.) Using Table 3, enter Xp/Q (m 2) for distances of 1, 2, 5, 10, and 20 miles for the stability class in (10.), and enter in Column A. (NOTE: Real time X p/Q can be used if known)

(12.) Divide Column A by the windspeed (m/sec) from (9.), and enter in Column B.

(13.) Multiply Column B by the Xe-133 (Ci/sec) from (7.) and enter in Column C, which are the concentrations at 1, 2, 5, 10, and 20 miles downwind.

(14.) Multiply Column C by 3.3 x 10* to calculate the estimated whole l

body dose rate from Xe-133 and enter in Column D. (Based on

! Regulatory Guide 1.109, table B-1)

Page 2 of 3 L

11 AD 1827.10.7 DATA SHEET No. 1 (Continued)

Column A Column B Column C Column D Downwind XU Xe-133 Whole body X3 " Q (wind speed) concentrations exposure from Distance (miles) Q,2)

(m (sec/m3 ) (pCi/cc) Xe-133 (mR/hr) 1 2

5 10 20 i

i -

l l

Page 3 of 3

[

4 4 12 AD 1827.10.11 DATA SHEET No. 2 Estimated Downwind Thyroid Dose to Adults and Children from I-131 (1.) Record the date and time Date Time

. (2.) Record the I-131 activity RE 2024B:

from RE.2024B and RE 2025B (1) Ist count: time , cpm CAUTION: Noble gases can (a) (b) make the I-131 (ii) 2nd count: time , cpm appear falsely (c) (d) high. Have C&HP' personnel verify the I-131 de- .

tected. If the incident con- (iii) m#EEin =(c-a)

(d-b) , _

tinues, insert silver zeolite

~

filters.

(i) Record the time and eps for RE 2024B and RE 2025B RE 2025B:

(ii) Approximately 10 (i) 1st count: time , eps minutes later, re- (a) (b) cord the time and (ii) 2nd count: time , cpm cpm for RE 2024B (c) (d) and RE 2025B (iii) Subtract cps in (i) (iii) SEE min

= (d-b)

(c-a) fros'(ii) and di-vide by the dif-ference in min'utes to obtain cpa/ min for RE 2024B and RE 2025B 11 (3.) From Figure 2, record. RE 2024B. cone'n pCi/cc the corresponding concentration in RE 2025B cone'n pCi/cc pCi/cc (4.) Calculate the estimated NI x 4.44x107 cc/sec =

release rate for I-131 by multiplying Erom (3.), "* uCi--

the highest value highest sec 7 Value from (3.) times 4.44x10 (5.) Convert release rate 11 (Q) in (4.) to Ci/see Mfx(1x10~8-hf)=

From (4.)

Ci/sec (6.) Same as (8.) on Data Sheet No. 1 Downwind direction (7.) Same as (9.) on Data m/see Sheet No. I wind speed Page 1 of 2

13 AD 1827.10.7 DATA SHEET No. 2 (Continued) 7 (8.) Same as (10.) on Data l Sheet No. 1 Stability Class (9.) Using Table 3 enter Xp/Q (m 2) for distances of 1, 2, 5, 10, and 20 miles for the stability class in (8.), and enter in Column A. (NOTE: Real time X p/Q can be used if known)

(10.) Divide Column A by the windspeed (m/sec) from (7.), and enter in Column B.

(ll.) Multiply Column B by the I-131 (Ci/sec) from (5.) and enter in Column C, which are the concentrations at 1, 2, 5, 10, and 20 miles downwind.

(12.) Multiply Column C by 1.1 x 10" to determine the estimated adult .

thyroid dose rate from I-131 in mR/hr and enter in Column D. *

(13.) Multiply Column D by 2 to determine the estimated child thyroid dose rate from I-131 mR/hr and enter in Column E. *

-

• The constants used in (12.) and (13.) above have a maximum differ-ence of 120% from time zero to 120 hours0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br /> after reactor shutdown; this error is acceptable. The actual values are shown in Figure 3 for information.

Column A Column B Column C Column D Column E

. Downwind X pi tjE I-131 Adult Child Distance Q Q (wind concen- thyroid thyroid dose speed) trations dose rate rate from from I-131 I-131 (miles) (m*2) (sec/m3 ) (pCi/ce) (mR/hr) (mR/hr) l l 1 l

l 2 5

10 20 l

i

(

I i

l Page 2 of 2

14 AD 1827.10.13 TABLE 1 e

Data Acquisition and Display System at ECC i

(Date) 13 (Time) Tower MET TOWER Modcoop (Time) 821 ft. - Wind Velocity - 612 ft.

l 99 gpg 9.9 99 gp3 9.0 I

821 ft. - Wind Direction - 612 ft.

99 9 DEG 00*O 00'0 DEG 821 ft. - 612 ft. - Temperature - 612 ft.

9.9 .y 99 9.9 .y 9.9 i

STATION VENT FLOW . 99.9 KCFM i

Panel in Control Room t

13 0-50 0-360* -4 to +8 SI996 ZI997 TDI998D l

Wind Velocity Wind Direction Temp 612' Elev. 612' Elev. 821'-612' Computer Points in Control Room I

Computer Point

. Wind Velocity, 612' Elev., in MPH A901 Wind Velocity, 821' Elev., in MPH A902 Wind Direction, 612' Elev., in degrees A900 Wind Direction, 821' Elev., in degrees A903 Temperature, 612' Elev., in 'F T699 3

Temperature, 821' Elev., in 'F T697 3

Temp. Diff., 821'-612', in 'F T698 Station Vent Flow, in KCFM F885 i

i i

1 s- - , . . -- - , - . - _ , _ , - _ _ - _ _ , _ _ ,

15 AD 1827.10.11 11 TABLE 2-A Pasquill Stability Class vs. AT Class AT = 821'*F minus 612'*F A Extremely unst'able < -2.2*F B Moderately unstable -2.2*F to -2.0*F C Slightly unstable -2.0*F to -1.8*F D Neutral -1.8*F to -0.6*F E Slightly stable -0.6*F to 1.8*F -

F Moderately stable 1.8'F to 4.7*F G Extremely stable > 4.7*F (Derived from NRC Regulatory Guide 1.23) 11 TABLE 2-B Classification of Atmospheric Stability by Standard Deviation of Wind Direction Stability Pasquill ~ SD *

. Classification Categories (degrees)

Extremely unstable A SD > 22.5 Moderately unstable B 22.5 > SD > 17.5 r

Slightly unstable C 17.5 > SD > 12.5 Neutral D 12.5 > SD > 7.5 Slightly stable E 7.5 > SD > 3.8 l

Moderately stable F 3.8 > SD > 2.1 Extremely stable G 2.1 > SD l

l

• Standard deviation of horizontal wind direction fluctuation over a l period of 15 minutes to I hour.

l l

l

- - - . - , ,- - - - - , , - y ~ --- * -m---

16 AD 1827.10.11 TABLE 3 Xp/Q (m 2) for Stability Classes as a Function of Downwind Distances of 1, 2, 5,10, and 20 miles A B C D E F G g

1 1.2x10-s 5.5x10-8 2.1x10-8 7.0x10-8 1.3x10-4 3.0x10-4 4.5x10-4

. 2 6.0x10-7 1.4x10-8 5.0x10-8 2.2x10-s 4.6x10-s 1.0x10-4 1.5x10-4 5 2.9x10-7 3.8x10-7 1.1x10-8 6.0x10-8 2.2x10-s 3.0x10-8 4.5x10-8 10 1.7x10-7 2.1x10-7 3.2x10-7 2.0x10-8 4.7x10-8 1.1x10-s 1.65x10 20 9.0x10-s 1.2x10-7 1.7x10-7 6.8x10-7 2.0x10-8 5.1x10-s 7.65x10-s The values for classes A through F were derived from Figure 5-3, Page 5.22 of EPA-520/1-75-001, Revised 6/79. The values assumed an inversica lid at 1000 meters altitude and a ground level release. The values for class G

were determined as per Reg. Guide 1,145 guidelines dated August 1979.

4 f

e

1 l

17 AD 1827.10.11 11 FIGURE 1 Conversion Chart for Noble Gas Releases (RE 2024C and RE 2025 C) 10 -

1 '

l

. . i

• ' ~

10- /

e' s

/

-2 /

10 , j J ,

r

, e m o s m ./

~

10

-3 -

y' Xe-133 /

u z

/..

. \

S 10 '

/

• i i , ,  ; .

s e ,

/ i

' i 10

-5 ,

/

J I II'

/ it

-6 j.

10 ,

/ -

A i

~ i

/ i

• / l

~7 10 l l -

10 10 2

10 83 l'0 " lb 5 6 if' 10 _

cpm (Copied from the Victoreen Calibration Manual)

18 AD 1827.10.11 11 FIGURE 2 Conversion Chart for Iodine Releases (RE 2024 B and RE 2025 B) 10 ' ,

~ '

10

+

-6 . .

10 1-1 .  ; ,

s v

/ I 10~ -

a M

m i / i i i

~ \ s t s s .

8 i /

~

10

~0

/

/

l o / \

/

10 _

-9

[ ' '

j '

/

/ i

-10

~

(10 ') 10

/

- l; . i

/ '

ll i I (10-5)10-11 ) e- - --

ll

, f  ;  ;

. /

-12 (10~ ) 10 / l l

10 3 l 0.01 0.1 1 10 10 10 0 5 6 (10 ) (10 ) (10 ) cpm / min

( (Copied from Victoreen Calibration Manual)

19 AD 1827.10.6 FIGURE 3 Radioiodine Dose Rate Factors for Infant Thyroid Dose Rate vs.

Time After Reactor Shutdown

=: = ..:: = u' .;. = = == :. .. an = =-  ::: = =  := n ae  ::: --=--- := =  :

2.7 =  :: : =  :- = ^ -

n- .- - - .= - - -

= - -- -- -- --

==- - -- - -

=. ,

,. ,n. .: .. . = n: = .:..

%5 i.5i E 2.6 - -~

2

. is iHi -

5 mi ci? - - #- 55 -

i H!!' fii i= - iiE 55.'

Q-;M ihj iiii .::; a:; g;j i;ii .

-i iiij a;; iiji 99  ; .. .- . .. .

s. 2.5 %E 5 5 5 " ~

E  ??E Ni * * *

• * * * .- *i ** -

E E 5Ei(5 54.in !$ .* ! E- :!$ --

E 5 liii 5 lii! ihi ~~! iiN ici. 55 :! Oi!  !!M i::: :iii 5 2.!! 5  !!N-5 i 5 !!"-5 'E 5 5 5 i:1 E!- iEi 55 5 5 5 i'

• 5 2'. 4 51\, :$ : i5 5 liii E iEi 55

== :.: . a: = .

Ei

. =  : . . . .

Ni!

.... .. =: .... ,_  :. .... . . . . . . . . . . . . .:. :

"". i . . . . .. .

= == t 2

b :n;

=:'

_; =.;;,; .;n

'a- :=

=- =

= .:, , :.  ;,;-.

- : ::-,* ,=.. = - ::'

-' a:na ::= ' ::

2.3 = -: = - - -

--T '*r:*:: -  ::'

- --* : ::: -.  : '-- : 2" i$ 55 5T5 iMi;i5 5i ni: !Hi 5 i:r  ![ !*5 ii-  :- 1i55 5  :~ii i: 5 5 ir i 55 5 sih i ii- 5 iii? E *: Ni!

5'r-Mi - i*-i 55NM im Hii 5 55 Ei!

!5 5 ii: 55 5 iiii 5 i! E 5 3 *7 2.2 .

=  ;

ii5 ?li lii:

k ,$

w 2:ii iis. d. ii. ~ = i.N. . - . .ii.i.i. i .

ii =. . im. . :- E. . E.. i.i.i.i.iiii. iii.i

.. . . i. : =.:. i. hi. =i

- ini. i. i.i.i.isi ~. i iih.- :.i.i. . =. .. .ii:n i: i. i.n..r-Wh 2,1

~

_. . . _ b N 5W UN E F  ! Ob 5 N * - '5- N k 5N b Nb N h N iN b

'h i:i -i: "!.-.'Iii *.d 5 ih :ii Mii!! iiii !!E 55 5 i. 5  ::l=OHi 55 f- . . ~i!N .' 5=5 5 5 E  :

M E 5 i- = 2 * ~~

wP 2.0

- = 3 ~

i kE = " = i" 5E E --

5  !" =5 "i E mi iiN  !-

m -- -

= = =; un un :.a.= =:. .. = = .:: = .:- = = .:.  :;..

u . u.:-

.== u u-

.u:

. . ._- = \:., =: n-u  ::=

=n = = = - - - -

= = = == == - - -:una

= =:- un g$

w 1.9 55 5 5 55 @ "3 ' E zo au u; = = =; u: == = :a

. m u r=.. =. = 2 :. = -- -

.=.r _=._ . .';:==: = . .

.;a .=

e-e ..=: =

= =- .= =;.=-  :- s. . %;* - = . = c.= = == ::

O 4

= -- --

= = = = .--

3 " "

.: . == n: =  := -

== a  ; .=--

.u; o*

M La2 1.8 -_--- = . . _ .

=._== =nu == --

= = ---

--sN r :-- =  : .._. = = = =  :- =n om =  : -- =  :: .:  ;= u.

N

==

~

n; .:..= =

-*: . *: .Ja! "C n :n nn

..: :::: n:

2

U.:' 1* * * -1 Z.:." 21:.

• 2: :** :

= M' D' P-'"==iZ,,', ='_'4j =*CJ 5::

4*

L

= x.*.

.... . . . . . .0:

• O.* ;;.**: .4* "J' .1..:.2 "

c ==- -  :  ; = .= _=. =a : ..,. u.= .--

=. = . - - --- --

2. = . .

$, 1.7 = = . - - . - - = = = - == = == = = = = --

= = == :. 6=-.. '

= . e :-

-.. _ . . =u. =:

=

=

=

==

- == =

n. =

=

= u:: = = == == .u.

= = = = = = :=- = =

.... au 2;.

(x10 ) D E fiF"~ --

;= =

'"~ '

E * * ";~

E '* "" ""

"" ~" * ** * * ' ~" ~~

4 1 i l 4 812 16 70 24 23 32.-0.-.4 0 48 60 . 72 -

84 96 108 120 HOURS AITER REACTOR SHUTDOWN The constant 2.2 x 10 9 has a maximum difference of 120% from time zero to I 120 hours0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br /> after reactor shutdown for the infant thyroid dose rate. This is based on the worst case of radioiodine activities in the fuel core 90 days after irradiation, Regulatory Guide 1.109 and NUREG-0133.

I

, --n --

l 20 AD 1827.10.11 0FFSITE DOSE CALCULATIONS USING TI PROGRAMMABLE CALCULATOR l

A miniprogram for the TI programmable calculator and its printer has been developed to simplify the offsite dose calculations. The program is divided into six sections which are discussed below. Samples of runs of each section are attached; circled items are inputs. Each section performs a different type of calculation, and each can be performed independently with the exception that either the noble gas or iodine release rate calculation must be performed once before any other section is run.

The program is not permanently stored and must be loaded into the cal-culator prior to use.

11 NOTE: The program does not include Table 3 Xp/Q values for stability -

class G, thus for those instances where a stability class G exists, hand calculations should be performed, however, if time constraints require using the calculator, stability class F should be used. (The values obtained using F stability class will be approximately 50% low.)

LOADING PROGRAM:

The program is encoded on both sides of two magnetic cards kept with the calculator. Handle these cards only by the edges. The sides are marked 1-4. To load the program, perform the following steps in order:

11 1) Turn on the printer, and then the calculator (printer switch on right side), then press; 1, 2nd, OP, 17 on the calculator, the calculator should display 879.09.

2) Press "1" and "+/ "

3) Feed the end of _the magnetic card labeled "1" into the program slot on calculator side - the calculator will automatically feed the card through the calculator and out the other side - pull the card out by the edges.

11 NOTE: If the calculator read the card properly, the (-1) will be shown in the display; if the (-1) is flashing, the card was read improperly. If this occurs, press clear and reenter the card.

4) Press "2" and "+/ "

5) Rapeat the feeding process with side 2 of first card

6) Press "3" and "+/ "

7) Repeat the feeding process wich side 3 of second card Attachment 1 Page 1 of 9 1

l

21 AD 1827.10.11

8) Press "4" and "+/ "

9) Repeat the feeding process with side 4 of second card

10) Proceed by pressing A for noble gas or B for iodine release rate calculations, either program will print a line of output on the J printer which ' finalizes the program within the calculator.

11 11) Finally, run programs E (see page 5 of 9) and 2nd A'(see page 6 of

9) to test that each of the main programs will run with fixed data.

These test routines ensure that the program was loaded in the cor-rect sequence into the calculator memory. Compare your printout with the output listed below each of the programs (E and 2nd A').

If an error (an incorrect output line or a flashing display) was encountered during either of the test runs, the user can reload the -

program (following the above procedure) or if the error continues contact the. calculator programmer (Technical Section) for assistance.

11 PROCEDURE:

Once the program has been loaded as stated above, start any of the calculations by pressing the A, B, C, or D buttons (top row of calculator) corresponding to the functions described below:

11 NOTE: To enter data, simply input the values in standard or scientific format, then press "R/S". (If an error is made in the entry, press "CE" and reenter the value.) Also note that the calculator may be use3 in the normal manual mode without affecting the programming; when manual calcula-tions are complete, to re-initiate a program simply press the button (s) corresponding to the desired calculation.

A - NOBLE GAS RELEASE RATE .

This program calculates the noble gas release rates in curies /sec from the l stack. As input, it requires the countrate from the noble gas monitors (RE2024C, 2025C) and the stack flow rate in KCFM.

11 FIRST PRESS A N CPM ENTER COUNTRATE IN CPM FROM RE2024C OR 2025C, THEN FRESS R/S ENTER STACK FLOW RATE -IN KCFM FROM COMPUTER S FLO K m POINT F885, THEN PRESS R/S 98.

6.383 8 00 C/SC 4 OUTPUT IS IN CURIES /SEC t

Attachment 1 Page 2 of 9 I

l

22 AD 1827.10.11 B - IODINE RELEASE RATE This program calculates the iodine release rate in curies /sec from the stack. As input, it requires the countrate from the iodine monitors RE2024B, 2025B) at two different times and the time span between the readings.

11 FIRST PRESS B I CPM , -ENTER THE INITIAL COUNTRATE FROM RE2024B OR 2025B, THEN PRESS R/S T MIN ENTER THE TIME SPAN BETWEEN READINGS, THEN hI PRESS R/S I CPM ENTER THE FINAL COUNTRATE FLOW RE2024B OR 2025B, 4.56 0 THEN PRESS R/S 1.9243116-03 C/SC 70UTPUT IS IN CURIES /SEC C - PREDICTED OFFSITE DOSE RATES - NOBLE GAS This program calculates tp whole body dose rates due to noble gases at various distances from the station. Required inputs are wind speed, stability class, and noble gas release rate.

Note that stability class input is numerical with A=1, B=2, C=3, D=4, E=5, F=6.

11 FIRST PRESS C WND SP MPH ENTER THE WIND SPEED IN MILES PER HOUR, THEN h PRESS R/S STBCL - ENTER THE STABILITY CLASS (NUMERICAL VALUE),

M THEN PRESS R/S C/SEC - ENTER THE NOBLE GAS RELEASE RATE IN CURIES /SEC, k THEN PRESS R/S 5.364 M/SC >THIS 0,UTPUT IS WIND SPEED IN METERS /SEC REDICTED NOBLE GAS CONCENTRATION AT 1 MILE IN 1.5462342-04 UC/C

1. M'pci/cc ~

WBDR= WHOLE BODY DOSE RATE AT 1 MILE IN MILLIREM / HOUR 5.1025727 00 MR/H Attachment 1 Page 3 of 9

23 AD 1827.10.11 5.4712901-05 UC/C WBDR= SAME AS ABOVE 2 MILES 1.8055257 00 MR/H 2.616704-05 UC/C WBDR= SAME AS ABOVE AT 5 MILES 8.635123-01 MR/H 5.5902312-06 UC/C WBDR= SAME AS ABOVE AT 10 MILES-1.8447763-01 MR/H 2.3788218-06 UC/C WBDR= SAME AS ABOVE AT 20 MILES 7.8501119-02 MR/H .

D - PREDICTED OFFSITE DOSE RATES - IODINE This program calculates the adult and child thyroid dose rates due to

. iodine at various distances from the plant. Required inputs are wind speed, stability class, and iodine release rate.

Note that stability class input is numerical with A=1, B=2, C=3, D=4, E=5, F=6.

11 FIRST PRESS D WND SP MP ENTER WIND SPEED IN MILES PER HOUR, THEN PRESS STBCL ENTER STABILITY CLASS (NUMERICAL VALUE), THEN h PRESS R/S C/SEC - ENTER IODINE RELEASE RATE IN CURIES /SEC, THEN D PRESS R/S l

l 5.364 M/SC - L DIS OUTPUT IS WIND SPEED IN METERS /SEC 4.6532438-08 UC/C l

ATDR= IODINE CONCENTRATION AT 1 MILE IN pCi/cc 5.1185682 01 MR/H CTDR= ADULT 'IHYROID DOSE RATE IN MR/HR AT 1 MILE 1.0237136 02 .MR/H CHILD THYROID DOSE RATE IN MR/HR AT 1 MILE i

l Attachment 1 l

Page 4 of 9 i

l

~

24 AD 1827.10.11 1

1.6465324-08 UC/C ATDR=

1.8111857 01 MR/H SAME AS ABOVE AT 2 MILES CTDR=

3.6223714 01 MR/H j 7.8747204-09 UC'/C ATDR=

8.6621924 00 MR/H SAME AS ABOVE AT 5 MILES CTDR=

1.7324385 01 MR/Hj 1.6823266-09 UC/C ATDR=

1.8505593 00 MR/H SAME AS ABOVE AT 10 MILES CTDR=

3.7011186 00 MR/hj s

7.1588367-10 UC/C ATDR=

7.8747204-01 MR/H SAME AS ABOVE AT 20 MILES CTDR=

1.5749441 00 MR/H E - TEST ROUTINE C - THE PREDICTED OFFSITE DOSE RATES - NOBLE GAS .

This program calculates the whole body dose rates due to noble gases at various distances from the station. The calculator will generate the input from this test run of routine C, so no additional input is needed.

Compare your output with the printout listed below.

TEST C=N G TEST ROUTINE C 11 PRESS E WND SP MPH THE WIND SPEED IN MILES PER HOUR STBCL - THE STABILITY CLASS E=5 (NUMERIC VALUE)

C/SEC - THE NOBLE GAS RELEASE RATE IN CURIES /SEC l

1. k l 0.447 M/SC- M IS O'UTPUT IS WIND SPEED IN METERS /SEC l

2.9082774-04 UC/C 7 PREDICTED NOBLE GAS CONCENTRATION AT 1 MILE IN WBDR= pCi/cc

, WHOLE BODY DOSE RATE AT 1 MILE IN MILLIREM / HOUR I

i l

Attachment 1 Page 5 of 9 l

k

25 AD 1827.10.11 1.0290828-04 UC/C _

WBDR= SAME AS ABOVE AT 2 MILES 3.3959732 00 MR/H 4.9217002-05 UC/

WBDR= SAME AS ABOVE AT 5 MILES 1.6241611 00 MR/H 1.0514541-05 UC/ ~

WBDR= SAME AS ABOVE AT 10 MILES' 3.4697987-01 MR/H 4.4742729-06 UC/C WBDR= SAME AS ABOVE AT 20 MILES 1.4765101-01 MR/H -

2nd, A' - TEST ROUTINE D - TE PREDICTED OFFSITE DOSE RATES - IODINE This pro' gram calculates the adult and child thyroid dose rates due to

. iodine at various distances from the plant. The calculator will generate the input for this test run of routine D, so no additional input is needed. Compare your output with the printout listed below.

TEST D = IDN TEST ROUTINE D 11 PRESS 2nd, A' N'",)s WND SP MPH

1. 7 TE WIND SPEED IN MILES PER HOUR

. STBCL

6. > THE STABILITY CLASS F=6 (NUMERIC VALUE)

C/SEC

1. > THE IODINE RELEASE RATE IN CURIES /SEC 0.447 M/SC 7THIS OUTPUT IS WIND SPEED IN METERS /SEC

'6.7114094-04 UC/C y IODINE CONCENTRATION AT 1 MILE IN pCi/cc ATDR=

7.3825503 05 MR/H > ADULT THYROID DOSE RATE IN MR/HR AT 1 MILE CTDR=

1.4765101 06 MR/H- ) CHILD THYROID DOSE RATE IN MR/HR AT 1 MILE I 2.2371365-04 ATDR= UC/C] ,

2.4608501 05 HR/H e SAME AS ABOVE AT 2 MILES CTDR=

4.9217002 05 MR/H Attachment 1 Page 6 of 9

, . . - . ,__..,p... - - - - --.---__y , , - - - - _ , , _ , - . - - - - - - - - - - - , --_+-_y--, -----.-., - .-r.

)

26 AD 1827.10.11 6.7114094-05 UC/C ATDR=

7.3825503 04 MR/H SAME AS ABOVE AT 5 MILES CTDR=

1.4765101 05 MR/H 2.4608501-05 UC/C ATDR=

2.7069351 04 MR/H SAME AS ABOVE AT 10 MILES CTDR=

MR/H.)l 5.4138702 04

~

1.1409396-05 UC/C)

ATDR= {

l 1.2550336 04 MR/H SAME AS ABOVE AT 20 MILES .

CTDR=

l 2.5100671 04 MR/H l

1 l

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Attachment 1 Page 7 of 9 l

4

,_ 27 AD 1827.10.11 11 CONDENSED INSTRUCTIONS FOR PERFORMING TI PROGRAMMABLE CALCULATOR DOSE CALCULATIONS LOAD:

1) Turn on printer and calculator, then press; 1, 2nd, OP,17 on the calculator, the calculator should display 879.09.

2) Press "1" and "+/ ", load side 1 NOTE: If the calculator read the card properly, the (-1) will be shown in the display.

3) Repeat step 2, pressing the corresponding number for side 2, 3, and -

4

, , 4) Press either "A" or "B"; then press "E" and then "2nd A'" below, to test the program of errors (compare your printout with the one listed with this procedure).

PRESS "A" FOR NOBLE GAS RELEASE RATE 11 Enter: Countrate from RE2024C or 2025C, Press R/S Enter: Stack flow in KCEN, Press R/S i Output: Noble gas release rate in curies /sec PRESS "B" FOR IODINE RELEASE RATE

~

11 Enter: Initial countrate from RE2024B or 2025B, Press R/S - -- - -

( . Enter: Time between readings, Press R/S i Enter: Final countrate from RE2024B or 2025B, Press R/S t

Output: Iodine release rate in curies /sec -

l PRESS "C" FOR WHOLE BODY DOSE RATES FROM NOBLE GASES 11 Enter: Wind speed in miles per hour, Press R/S Enter: Stability class *, Press R/S Enter: Release rate in curies /sec, Press R/S Output: Wind speed in meters /sec Output: Noble gas concentration in pCi/cc and whole body dose rate in er/hr at 1, 2, 5,10, and 2,0 miles PRESS "D" FOR THYROID DOSE RATES FROM IODINE 11 Enter: Wind speed in miles per hour, Press R/S l

Enter: Stability class *, Press R/S l

Enter: Release rate in curies /sec, Press R/S l

Output: Wind speed in meters /sec

! Output: Iodine concentration in pCi/ce, adult thyroid dose rate in ar/hr and child thyroid dose rate in ar/hr at 1, 2, 5, 10, and 20 miles I

l

• Use numerical value for stability class: A=1, B=2, C=3, D=4, E=5, F=6 Attachment 1 i Page 8 of 9 T-" va- w - ~ - - yr y- -

---r

28 AD 1827.10.11 PRESS "E" TO TEST "C" FOR WHOLE BODY DOSE RATES FROM NOBLE GASES Enter: No Data Input is needed 11 Output: Whole body dose rate in er,eso- compare with data on page 5 of 9 PRESS "2nd, A'" TO TEST "D" FOR THYR 0lb DOSE RATES FROM IODINE Enter: No Data Input is needed 11 Output: Adult and child thyroid dose rates, both in ar/hr, compare with data on page 6 of 9

. )

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l Attachment 1 l

Page 9 of 9 t

29 AD 1827.10.13 Instructions For Accessing DEC PDP 11/34 For Meterological Data

1. Turn phone accessed data terminal on.

2. Ensure unit is in ready mode ( LOCAL button on).

- 3. Check the options:

a) PARITY - off b) DUPLEX - full.

c) BAUD - 300 or 30 CPS

4. Dial phone number: 2379. When the frequency tone is haard, press the DATA button. Hang up phone receiver.

5. Computer /0perator' correspondence:

a. Computer will type: _

b. Operator will type: HELLO 100,100 Return carriage

c. Computer will type: PASSWORD: (See Note on Pg. 28 for correct password)

d. Operator will type:

Return carriage NOTE: Password will not be printed I

e. Computer will type: RSX-11M BL26 MULTI-USER SYSTEM GOOD AFTERNOON 8-JUL-82 13:23 LOGGED ON TERMINAL TTIO Toledo Edison Company

, Davis-Besse Site I Environmental Monitoring Computer System UNAUTHORIZED ACCESS INTO THIS SYSTEM IS PROHIBITED BY FEDERAL LAW. .

I NOTE: The system time on this computer remains at Eastern Standard Time the year around.

t l

Attachment 2 Page 1 of 4 l

L 1

30 AD 1827.10.13

>@LOGIN.CND

> SET / SLAV-TI:

>; DAVIS-BESSE kT.ATHER DATA

>RUN SURVEY SELECT OPTION 1 - DISPLAY HOURLY AVERAGE kT.ATHER DATA 2 - DISPLAY 15 MINUTE AVERAGE DATA 3 - LIST WT.ATHER T0kT.R GENERAL INFORMATION 4 - LIST DEFINITIONS OF hT.ATHER DATA ABBREVIATIONS OR CARRIAGE RETURN TO LOG OFF ENTER OPTION (1, 2, 3, or 4):

f. Operator will type: (Enter option of your choice)

• Return carriage NOTE: Computer is on EST

g. For Option 1 -

Computer will type: Please enter the starting month, day, and hour you wish to look at or RETURN to return to option list (MM, DD, HH, or RETURN).

Operator will type: (Enter month, day, and hour of choice.

Example: 07, 08, 10).

. Return carriage Computer will type: Please enter the ending month, day, and hour you wish to look at (MM, DD, HH):

i Operator will type: (Enter month, day, and hour of your choice.

Example: 07, 08, 15).

h. For Option 2 -

Computer will type: is the current time (EST). Any hours you ask for which are greater than this hour will assume to be hours which occurred yeste'rday. A total of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> worth of -

15-minute average data is available.

Enter the starting and ending hours (0-23),

or 24 to get all all 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, or RETURN to return to option list (SHR, EHR, or 24 or RETURN]:

1. Computer will print out requested data and return to option list.

l Attachment 2 Page 2 of 4 l

i i

e ..

31 AD 1827.10.13

j. If more data is required, repeat Steps f - j.

k. If you wish to sign off, push RETURN and computer will print:

> SET /NOSLAVE=TI:

> BYE -

TASK "...AT." TERMINATED ABORTED VIA DIRECTIVE OR MCR AND WITH PENDING IO REQUESTS HAVE A GOOD AFTERNCON 08-JUL-82 13:25 TI1O: LOGGED OFF

1. Push TERM READY to return printer to a stand-by condition.

NOTE: Passwords for accessing the 11/34 Met Data from the following locations are:

Location Password Ottawa County DBOTT Ohio State DB0HIO Region III -

DBNRC3 Washington DBNRCW Emer. Control Center (ECC) TEDEPG Control Room CONTRM i

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Attachment 2 f

Page 3 of 4

_,_ _ __ _. . __ .. _ _ _ _ _ ~. ._.. - _

t

. s 32 AD 1827.10.13 METEOROLOGICAL PARAMETER ABREVIATION DEFINITIONS WSPD- -- Wind speed in miles per hour. WSPD's are given at the 100 meter, 75 metet, and the 10 meter levels.

WD -- Wind direction in degrees, north = 0. WD's are given at the 100 meter, 75 meter, and the 10 meter levels.

SD -- Standard deviation (sigma theta) of the horizontal wind direction. SD's are given at the 100 meter, 75 meter, and the 10 meter levels.

100 DT -- Temperature differential in degrees fahrenheit between the 100 meter and the 10 meter levels.

'75 DT -- Temperature differential in degrees fahrenheit between the 75 meter and the 10 meter levels.

AMB TEMP -- Temperature in degrees fahrenheit at the 10 meter level.

10 DW PNT -- Dew point temperature in degrees fahrenheit at the 10 meter level.

100 DW PNT-- Dew point temperature in degrees fahrenheit at the 100 meter level. 100 DW PNT's are only available for 15 minute average data.

RAIN -- Precipitation in inches (down to 1/100 of an inch) at .the 1 meter level. Precipitation is never averaged, instead, it is totalled.

6 Attachment 2 END Page 4 of 4

DAVIS-BESSE REVISION COVER SHEET

,4+

May 11, 1983 DATE TO: - f lf Gl' ) .

FROM: EMERGENCY PLANN G & PREPAREDNESS SUPV.

SUBJECT:

Davis-Besse EMERGENCY PLAN SUPPORTING PROCEDURES Manual Changes This letter transmits additions and revisions to the Davis-Besse-EMERGENCY PLAN SUPPORTING PROCEDURES Manual. Control Copy , f 9.

Instructions for the material are as follows:

REMOVE AND RE1MLN INSERT Revision Index, Rev. 176 Revision Index, Rev. 177, AD 1827.10.12 AD 1827.10.13

. T-6491 Date Revision Entered Addressee Signature _.,

RETURN TO THE OFFICE MANAGER - STOP #3050

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