ML20039B861
| ML20039B861 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 12/09/1981 |
| From: | METROPOLITAN EDISON CO. |
| To: | |
| Shared Package | |
| ML20039B859 | List: |
| References | |
| 1054.7-01, 1054.7-1, NUDOCS 8112240044 | |
| Download: ML20039B861 (16) | |
Text
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FOR USE IN UNIT 11 ONLY 1054.7 Revision 1 12-9-81 THREE MILE ISLAND NUCLEAR STATION CONTROLLED COPY FOR -
UNIT NO. 2 EMERGENCY PLAN IMPLEMENTING PROCEDURE 1054.7 0FFSITE DOSE PROJECTIONS USE IN UNIT 1i ONLY Table of Effective Pages g h.h" ;)'- %.
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Page Revision Page Revision Page Revision Page Revision 1.0 1
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Unit 2 Sta d R mends Approval Approval /
Date@ b b C gnizant Dept. Head 1
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Unit 2 P0 Rec-en Approval Date //
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/ Chairmafi of PORC
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Unit 2 Superintendent Approval h, d b, N b Date 12/4 /8 )
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Mgr QA Approval NRC Approval A/A Date A/d Date Doctanant ID:0033w bR DO O
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PDR rGR USE IN UNIT 11 ONLY u
FOR USE IN UNIT ll ONLY
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1o54 7 Revision 1 THREE MILE ISLAND NUCLEAR STATION
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UNIT NO. 2 EMERGENCY PLAN IMPLEMENTING PROCEDURE 1054.7 0FF-SITE DOSE PROJECTIONS
- 1. 0 PURPOSE The purpose of this procedure is to provide a means of perfonaing manual calculations for airborne and liquid mieases from TMI Unit 2.
It includes the capability to detennine projected dose comitments for monitored and unmonitomd airborne releases and downstmam concentrations of radioisotcpes released to the Susquehanna River. The RAC is msponsible for implementing this procedure.
2.0 REFERENCES
2.1 R.G. 1.109.
2.2 Memorandum No. 9240-2121, J. Sykes III to J.M. Bondick,
" Sensitivity Factor for Victomen Moving Filter Particulate Monitors for Use During an Incident", dated 10-14-81.
2.3 Helgeson, G.L.,1963, Heal th Physics 9, pp. 931-942, " Determination of Concentrations of Airborne Radioactivity".
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o64 7 Revision 1
- 3. 0 ETEOR0 LOGICAL CONSIDERATIONS Wind Direction = From (Recorder WDS-1A)
Wind Speed mph p
AT (Recortier TR-1923) g Category Pasquill C1 ass AT> - 0.3 Stable F
-1.0 < AT< - 0.3 lieutral D
AT < - 1.0 Unstable B
If TR-1923 is not available, call Unit 1 Control Room for this i nfo mation.
If data is not available from Unit 1, then observe Recorder WDS-1A for wind direction for past 20 minutes and detemine stability class by the
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following criteria:
Wind Direction Range (ad)
Ca tegory Pasquill Class l
A d<45 Stable F
45< A d<7 5 lieutral D
A d>75 Unstable B
If no data is aveilable then assume Stable Category, Pasquill Class F.
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FOR USE IN UNIT 11 ONLY 1054.7 Revision 1 4.0 G/Q Pasquill Class EA (2000 ft/600m)
LPZ-2 mi EPZ-5 mi LPZ-10 mi F
1.3 E. 03 2.0 E - 04 7.0 E - 05 3.2 E - 05 D
5.4 E - 04 5.1 E - 05 1.3 E - 05 5.2 E - 06 B
1.1 E - 04 2.2 E - 06 7.4 E - 07 4.7 0 - 07 3
To Determine X/Q (Sec/m ), divide Xu/Q by actual wind speed, u:
X (Sec/m3)
G/Q
=
u Q
3.0
- OR USE IN UNIT 11 ONLY
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TMINS Uf 2
o SCHEMATlv EXHAUST AIR FLOW DIAGRAM HP-R-219 HP-R-219A l
STATION HP-R-219B (Particulate only)
VENT HP-R-219 Auxiliary (No read out) 122,000 O
8 CFM y
M -225 HP-R-222 HP-R-228 g
71 m
O Z
u C AUX.
ABSOLUTE 70,000 CFM 0-ABSOLUTE A
C
' @ BUILDING FILTERS 20,000 CFM FILTERS TRAIN 7
m
---I HP-R-221 HP-R-221B M -226 REACTOR BUILDING Q
h PURGE SYSTEM Z
Z r-4 k
O FUEL ABSOLUTE 4 1,000 CFM 0-ABSOLUTE B
Z HANDLING FILTERS 20,000 CFM FILTERS TRAIN _.
p BUILDING A
4 l
as
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9,500
<g CFM 9,-y M
CONTROL AND SERVICE BUILDING (NOT MONITORED)
FOR USE IN UNIT 11 ONLY 1054a Revision 1 TABLE 1 Monitor Typical Flow Recorder Conversion System Number Manufacturer Flow (cfm)*
Number Factor Station Vent HP-R-219 Victoreen 100,000**
HP-R-VIR-219 Particulate:
6.62 E - 11 Ci/m3 cpm / min
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Noble Gas:
1.28 E - 08 3
Ci/m / cpm Station Vent HP-R-219A Eberline 100,000**
HP-R-VIR-219 Particulate:
1.67 E - 05 min /cc Fugl Handling HP-R-221B Victoreen 40,000 5659 Particulate:
Building 6.62 E - 11 3
Ci/m / cpm / min Noble Gas:
1.28 E - 08 3
C1/m / cpm Auxiliary HP-R-228 Victoreen 70,000 5286 Particulate:
Building 6.62 E - 11 Ci/m3 cpm / min
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Noble Gas:
2.81 E - 08 Ci/m3 cpm
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SDS Off Gas CNRVA12 Eberline 650 Particulate:
1.24 E - 10 uCi/cc/ cpm / min CNRVA14 Noble Gas:
3.85 E - 10 Ci/m3 cpm
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Chemical RMI-18 NMC 7,000 Particulate:
Cleaning Bldg.
2.81 E - 10 Ci/m3 cpm / min (EPICOR II)
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Noble Gas:
1.52 E - 08 3
Ci/m / cpm Reactor HP-R-226 Victoreen 20,000 5064 Particulate:
Building 6.62 E - 11 Ci/m3 cpm / min Pure Exhaust B
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Noble Gas:
1.28 E - 08 3
Ci/m / cpm to only if flow rates are not available from strip chart recorders.
- Add 20,000 cfm for each Reactor Building purge train that is in service.
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~FOR USE IN UNIT 11 ONLY g;l,,1.
5.0 SOURCE TERM CALCULATIONS I.
For all Airborne Monitors Equipped with Particulate and Noble Gas Channels - Except HP-R-219A Particulate Channel (CPM - CPM ) x (CF) E C1/m3 2
1 AI Where CPM 2 = current channel reading CPM 1 = channel reading at-minutes previously at
= time differen:e between CPM 2 and CPM 1 1
recomended at is 10 minutes Noble Gas Channel (CPM) x (CF) = C1/m3 II.
For HP-R-219A Particulate Channel (uCi - uCi ) x (CF) E Ci/m3 2
1 l
At l
Where uC12 = current channel reading pC11 = channel reading at minutes previously at =
time differen:e between uC12 and uCi ;
l recomended at is 10 minutes Noble Gas - No calculation required pCi/cc 3 Ci/m3 Source Flow Rate at Monitor Sample Point 3
Velecti;y (FPM) x 70.88 x 4.72 x 10-4 = m3/sec or % Flow x 2480.8 x 4.72 x 10-4 = m /sec Particulate and Noble Gas Source Tenn Ci/m3 x Source Flow Rate (m3 sec) = Ci/sec.
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Note 1:
If there is more than one (1) point of release add sourte l
tem contribution from each release point to obtain total source tem.
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2 FOR USE IN UNIT ll ONLY 1054.7 Revision 1 DOSE COMMIT!ENT CALCULATIONS 6.0 F x X/Q x Total Source Tenn x DCF = Dose Comitment in REM for 1 sec.
exposure Where F = Fraction of Isotope present DCF = Dose Conversion Factor Dose Conversions (dose commitment for 1 sec. exposure to isotopes) 3 Isotope F*
DCF (REM /sec/Ci/m 1 Critical Organ Cs-137 0.96 28.61 Child Bone Sr-90 0.04 3416.67 Adolescent Bone Kr-85 s
1.00 0.043 Skin / Eye y
1.00 5.11 E - 04 Whole Body NOTE 1:
Dose Comitment must be multiplied by the time (in seconds) of exposure to the cloud. This time should generally be equal to the release period, unless other factors, such as wind direction changes, suggest a more reasonble value.
Use these values if isotopic inventory data is unavailable.
NOTE 2:
To obtain total ~ bone dose, add dose contribution from Cs-137 and Sr-90 dose calculation.
4 7.0 FOR USE IN UNIT 11 ONLY
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~ 1LE 2 CON...GENCY CLASSIFICATION s0SE PROJECTIONS (REM Ban 2 Dasa Commitment)
CLASSIFICATION ASSUMED CONDITIONS EA 2 LPZ 5 EPZ : 10 EPZ T)
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- CASE 1
- 1. Total Curie Content (100 C1)
- 1.08 E-1: 2.2 E-2 5.5 E-3 : 3.0 E-3 :
1
- 2. Isotope Analysis
- Radioactive Mater- :
- als Storage Fac t-
- 3.1% of ac tivity released to
- lity (RMSF) Fire the atmosphere in 15 minutes.
(f) g ll l
O 2
30 l
C
- CASE 2
- 1. Total Curie Content (60;000 C1): 4.4 E-2 :
9 E-3 2 E-3 :
1 E-3 :
C
- 2. Cask seai and iiner are (SDS) Liner breac hed.
' (f)
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Handling Accident : 3. Zeolites are dewatered.
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- 4.1% of activity is released to :
the atmosphere in 15 minutes.
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- 5. Release occurs in AFHB through :
,Z O
m filtered (HEPA PF = 1000) ventilation.
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- CASE 3
- 1. Total Curie Content of one
- 1.90 E-1: 3.8 E-1 1.0 E-2 :
5 E-3 :
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liner (1300 C1)
- O (EpiCOR) tiner
- 2. Isotopic anaiysis ass Cs, Z
- Handling Accident :
1% Sr.
- 3. Two liners are breached.
p
- 4. Organic resins are dewatered.
- 5. 0.1% of the activity is re-leased to the atmosphere in 15 minutes.
- 6. Release occurs in an area w/o :
filtered ventilation gg
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~FOR USE Il\\ UNIT 11 ONLY 1054.7 Revision 1 7.0 LIQUID RELEASE CALCULATION 7.1 Estimate quantity of radioactive liquid released or the release rate of the liquid being released gallons or gpm.
7.2 From recorded infonnation or sample analysis determine the activity level (in uCi/:al) of the released liquid:
uC1/ml.
7.3 Obtain the river level by calling the River Forecast Center in Harrisburg at phone number 782-2256 or 782-3488 and record the reading:
ft.
7.4 Find the river flow corresponding to the river level number 7.3 above, in Table 4 and record:
CFS.
7.5 Calculate the average and maximum downstream concentrations of radioactive material as follows:
Maximum uCi/mi x gpm x 2.23 x 10-3 cfs/gpm t cfs =
uCi/m1*
- NOTE:
If the average or maximum downstream concentration is > 1 x 10-6 uC1/ml, notify downstream users to curtail intake.
Average Calculated as per Steps 9.1 and 9.2 in this procedure.
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9.0 FOR USE IN UNIT 11 ONLY
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'FOR USE IN UNIT 11 ONLY 054;lon1 4
- 8. 0 TIME FOR FLUME TO REACH DOWNSTREAM USERS 8.1 Downstream Points (Table 3) 8.2 Distance to Point in Miles (Table 3) 8.3 River velocit;y in raph corresponding to river flow from 7.4 above (Table 4) 8.4 Calculate a time in hours for the flume to reach selected points. Step 8.2 and 8.3 above.
10.0 FOR USE IN UNIT 11 ONLY
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'FOR USE IN UNIT 11 ONLY 1054.7 Revision 1 9
9.0 24-H00R AVERAGE CONCENTRATION IN UNRESTRICTED AREAS 9.1 Record the duration of the release in minutes:
minutes.
9.2 Calculate a 24-hour average concentration in unrestricted areas:
uCi/mi x min x 6.95 x 10-4 =
uCi/ml.
9.3 Determine the estimated fraction of MPC:
uCi/n.1 MPC,** =
Fraction of MPC NOTE :*
If the fraction obtained is > 500, notification to the NRC is required with 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> per 10CFR20.403.
If the fraction obtained is > 5,000, imediate notification is required per 10CFR20.403.
NOTE:**
MPC is the weighted MPC for the isotopes released.
If unknown, use 3 x 10-8,ggj,j,
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l 11.0 FOR USE IN UNIT 11 ONLY
FOR USE IN UNIT 11 ONLY los4.7 Revision 1 TABLE 3 DOWNSTREAM USERS User Distance in Miles 1.
Brunner Island Steam Electric Station 5
2.
Wrightsville Water Supply Company 16.25 3.
Borough of Columbia 16.75 4.
City of Lancaster 16.75 5.
Safe Harbor Water and Power Corp.
27.25 6.
Holtwood Reservoir 34.75 7.
Chester Water Authority 43 8.
City of Baltimore 49 l
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'FOR USE IN UNIT 11 ONLY 1054.7 Revision 1 ATTACHENT IX TABLE I RIVER FLOW VS. RIYER LEVEL A
B C
D Gauge Reading River Elevation Market Street at Tlu River Flow River Bridge, Hbg.
(Feet Above (Cubic Feet Yelocity
( Fe et)
Sea Level) per Second)
(MPH) 4.3 278.7 20,000
.9 5.3 279.5 40,000 1.4 6.2 2W.1 60,000 1.7 7.1 280.7 80,000 2.0 8.1 281.3 100,000 2.3 10.4 282.5 150,000 2.6 12.5 283.6 200,000 3.1 14.3 284.9 250,000 3.3 16.1 285.8 300,000 3.5 17.9 287.0 350,000 3.7 19.5 288.1 400,000 3.9 21.2 289.7 450,000 4.1 22.7 291.0 500,000 4.3 24.3 292.6 550,000 4.5 25.6 294.0 600,000 4.7 26.9 295.2 650,000 4.9 28.1 296.1 700,000 5.1 29.3 297.1 750.000 5.3 30.4 298.1
$0,000 5.5 31.3 299.2 850,000 5.7 32.0 300.1 900,000 5.9 32.6 301.1 950,000 6.1 33.1 302.0 1,000,000 6.3 NOTE: River elevations 302.0 feet at water intake structure TMI requires initiation of EPIP 1004.2 ALERT
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13.0 FOR USE IN UNIT 11 ONLY
FOR USE IN UNIT 11 ONLY 10s,.7 Revision 1 ATTACHMENT 1 THREE MILE ISLAND NUCLEAR STATION - UNIT 2 AIRBORNE RELEASES LOG SHEET Date:
Time (24-Hour Clock):
Meteorological Data Wind Direction:
Wind Speed:
Stability Class:
Source Tenns (Ci/sec) - Specify Source (Example: Plant Stack)
Total Source Tenn (Ci/sec)
Dose Projections EA LPZ 5 Mile EPZ 10 Mile EPZ Whole Body (N.G.)
Beta Skin (N.G.)
Bone Dose: Adolescent Coments or Additional Data:
14.0 FOR USE IN UNIT 11 ONLY g
eape<++w+
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'FOR USE IN UNIT 11 ONLY 1054.7 Revision 1 ATTACHENT 2 THREE MILE ISLAND NUCLEAR STATION - UNIT 2 LIQUID RELEASES LOG SHEET Date:
Time:
Release Date (gpm):
Concentration of Released Liquid (uCi/ml):
River Velocity (mph):
Maximum Downstream Concentration (uCi/ml):
Time of Arrival of Flume:
Brunner Island Steam Electric Station Wrightsville Water Supply Company Borough of Columbia City of Lancaster Safe Harbor Water and Power Corp.
Holtwood Reservoir Chester Water Authority City of Baltimore Cor.nents or Additional Data:
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15.0
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