ML20063M405
| ML20063M405 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 08/05/1982 |
| From: | Nix H, Rogers W GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20063M400 | List: |
| References | |
| HNP-4851-01, HNP-4851-1, NUDOCS 8209140045 | |
| Download: ML20063M405 (10) | |
Text
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.f GEORGIA POWER COMPANY HATCH NUCLEAR PLANT PROCEDURE Emergency C1.assification Determination _
Based On Effluent Monitors PROCEDURE TITLE
. HNP-4851 PROCEDURE NUMBER Lab RESPONSIBLE SECTION N -
SAFETY RELATED ( X ) NON-SAFETY RELATED ( )
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APPROVED APPROVED REV. DESCRIPTION DEPT. PLANT DATE
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't See Title Page 1 of 8 !f EMERGENCY CLASSIFICATION DETERMINATION RASED ON EFFLUENT MONITORS NOTE This procedure supercedes HNP-4608 Revision 7. - A. PURPOSE To describe a method for determining the Emergency Class using
. gaseous effluent monitors when releases are being made.
B. EMERGENCY CLASS RELEASE LIMITS
- 1. Alert Emergency: Gaseous releases are greater than 10 tiras Tech Spec Limits Section
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- 2. Si te Area Emergency: Gaseous effluent monitors detect levels corresponding to greater than 50 mr/hr for 1/2 hour or greater than 500 mr/hr W.B. for two minutes (or five times these levels for thyroid) at the site boundary for adverse meteorology.
- 3. General Emergency: Effluent monitors detect levels corresponding to 1 rem /hr W.B. or 5 rem /hr thyroid at the site boundary under actual meteorological conditions.
C. REFERENCES
- 1. HNP-4621
- 2. HNP-4721
- 3. HNP-4850
- 4. Emergency Plan Section D.
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[ S,e e Title Page 2 of 8 D. RELEASE RATES - Determine release in curies /sec for each release point using procedure HNP-4850. (GNs)
- 1. Main Stack' = Ci/sec
- 2. Reactor Building Vent Unit 1 (GNvl) = Ci/sec Reactor Building Vent Unit 2 (GNv2) = Ci/sec Recombiner Building Vent Unit 1 (GNv3) = Ci/sec (if no alarm enter zero)
Su.a of Vents (GNv) = Ci/sec j E. ALERT EMERGENCY Declare alert emergency if either of the following two equations are satisfied ins tantaneously. 1.703 GNs + 23.815 GNv Greater than 10 l 1.703 ( ) + 23.815 ( ) =
+ ) =
( ) .( or I 1.0 X 10 2 GNs + 1.5 X 10 3 GNv Greater than 10 1.0 X 10 1 ( ) + 1.5 X 103 ( ) = F. SITE AREA EMERGENCY Declare Site Area Emergency if the follcwing two equations are satisfied for time period. 4 k 1. GNs + GNv Greater than 1 for longer than 30 minutes
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- 2. GNs + GNv Greater than 1 for longer than 2 minutes 9.4 1.2 E-1
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.G. ' GENERAL EMERGENCY i
- 1. Check air temperature difference ..
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(Delta T) recorder and wind direction Delta T = *F - recorder readings (W.D. recorder W.D. =
- indicates which direction the wind is coming fra'. m 2.
Based on Delta T, apply applicable Pasquill Category in Chart 1
. CHART 1 PASGUILL ATMOSPHERIC STABILITY CLASSIFICATION USING DELTA T MEASUREMENTS
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C < - O. 9 - O. 9 5 D < - O. 3 - O. 3 4 E < + 0.9 + 0.9 ___________________________________..________________________F> __________ PASGUILL CATEGORY
- 3. Determine average wind speeds for periods of release intervals from recorder P62-R900 (Hil-P658). Use the 150 foot elevation wind speed recording.
150 Foot level average wind speed U fso = (uncorr.) 4. Correct indicated wind speed to determine speed at top of main stack. Use table 2. .. Us = (U150) X (Us) = mi/hr TABLE 2 RATIO OF WIND SPEED AT MAIN STACK HEIGHT TO WIND SPEED AT MEASURED HEIGHT PASGUILL CATEGORY RATIO C 1.13 D 1.24 E 1.47 F 1.47
- 5. Using Us, U/so, Pasquill Category, and Tables 3, 4, 5, and 6, I
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- 6. Declare General Emergency if either of the following equations are satisfied. _
- a. (R/GNs)(GNs) + (R/GNv)(GNv) >1 *
, ( ) ( -) +( ) ( ) =
- b. (2 E-3)* +
((R/GIs)(GNs) (R/GIv)(GNv)) > 1 (2E-3)*(( ) ( ) + ( ) ( }) =
* (2 E-3) assumes that Iodine / Noble Gas ratio is 0.001. If ratio is known, multiply (2 E-3) by the factor calculated below and use the results instead of (2 E-3) in the
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' DOSE RATE PER RELEASE RATE REM-SEC Mi/HR Ci - HR NOBLE. GAS IODIrE STACK VENT STACK VENT R/Gns R/GNv R/GIs R/GIv O 5.0 E - 2 2.3 E - O 4.8 E + 1 2.3 E + 3 1 2.6 E - 2 1.3 E O 2.65 E + 1 1.2 E + 3 2 1.45 E - 2 6.5 E - 1 1.42 E + 1 6.8 E + 2 3 9.3 E-3 4.3 E - 1 9.2 E O 4.4 E + 2 4 6.7 E - 3 3.2 E - 1 6.7 E O 3.2 E + 2 5 5.3 E - 3 2.5 E - 1 5.4 E O 2.5 E + 2 6 4.4 E - 3 2.1 E - 1 4.5 E O 7 2.1 E + 2 3.7 E - 3 1.8 E - 1 3.8 E.O 1.8 E + 2 8 3.25 E - 3 1.55 E - 1 3.3 E O 1.6 2 + 2 9 2.85 E 1.38 F - 1 2.95 E O 1.4 E + 2 -
10 2.55 E - 3 1.24 E - 1 2.65 E O 1.25 E + 2 11 2.3 E - 3 1.15 E - 1 2.4 E O 1.15 E + 2 12 2.12 E - 3 1.02 E - 1 2.2 E O 1.05 E + 2 13 1.98 E - 3 9.5 E - 2 2.0 E O 9.6 E + 1 14 1.85 E - 3 8.8 E - 2 1.88 E O 8.9 E + 1 15 1.75 E - 3 8.2 E - 2 1.75 E O 8.3 E + 1 16 1.65 E - 3 7.7 E - 2 1.63 E O 7.8 E + 1 17 1.55 E - 3 7.3 E - 2 1.54 E O 7.4 E + 1 18 1.48 E - 3 6.9 E - 2 1.47 E O 6.9 E + 1 19 1.39 E - 3 6.5 E - 2 1.39 E O 6.6 E + 1 20 1.32 E - 3 6.2 E - 2 1.31 E'O 6.2 E + 1 21 1.26 E - 3 5.9 E - 2 1.25 E O 6.0 E + 1 22 1.2 E-3 5.8 E - 2 1.2 E O 5.7 E + 1 23 1.15 E - 3 5.4 E - 2 1.16 E O 5.4 E + 1 24 1.11 E - 3 5.2 E - 2 1.11 E O 5.2 E + 1 25 1.07 E - 3 5.0 E - 2 1.07 E O 5.0 E + 1 26 1.01 E - 3 4.8 E - 2 1.04 E O 4.8 E + 1 27 9.8 E - 4 4.6 E - 2 1.01 E O 4.7 E +'1 28 9.4 E - 4 4.5 E - 2 1.0 E O 4.5 E + 1 fI [ ' % ,,d I/*4 nn
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j TABLE 4 , i l PASGUILL D _ i QIND' SPEED DOSE RATE PER RELEASE RATE (REM SFC) Mi/HR Ci - HR i NOBLE GASES IODINE STACK VENT STACK VENT i R/GNs R/GN'v R/GIs R/GIs . O 3.3 E - 2 2.8 E O 2.4 E + 1 3.1 E +3 i 1 1.4 E - 2 1.45 E O 1.4 E t 1 1.6 E t 3 2 7.0 E - 3 8.6 E - 1 7.6 E O 8.5 E + 2 3 4.7 E - 3 5.4 E - 1 4.8 E O 5.4 E + 2 4 3.4 E - 3 3.95 E - 1 3.6 E O 3.9 E + 2 I 5 2.75 E - 3 3.1 E - 1 2.85 E O 3.1 E + 2 2 6 2.3 E - 3 2.55 E - 1 2.33 E O 2.6 E + 2 7 1.9 E - 3 2.2 E - 1 2.05 E O 2.2 E + 2
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8 1.74 E - 3 1.9 E - 1 1.79 E O 1.9 E + 2 9 1.55 E - 3 1.70 E - 1 ~ 1.58 E O 1.7 E + 2 10 1.38 E - 3 1.50 E - 1 1.4 E O 1.51 E + 2 11 1.25 E - 3 1.39 E - 1 1.28 E O 1.49 E 1 2 12 1.15 E - 3 1.28 E - 1 1.16 E O "t.38 E f a 13 1.05 E - 3 1.18 E - 1 1.08 E O 1.28 E + 2 14 9.9 E - 4 1.10 E - 1 1.0 E O 1.1 E + 2 15 9.3 E - 4 1.03 E - 1 9.3 E - 1 1.02 E + 2 16 8.8 E - 4 9.7 E - 2 8.7 E - 1 9.6 E + 1 17 8.2 E - 4 9.2 E - 2 8.2 E - 1 9.1 E + 1 18 7.8 E - 4 8.6 E - 2 7.8 E - 1 8.6 E + 1 19 7.4 E - 4 8.2 E - 2 7.4 E - 1 8.2 E + 1 20 7.0 E - 4 7.8 E - 2 7.0 E - 1 7.8 E + 1 21 6.5E 4 7.4 E -2 6.7 E - 1 7.4 E + 1 22 6.4 E - 4 7.0 E - 2 6.4 E - 1 7.0 E + 1 23 6.1 E - 4 6.7 E - 2 6.1 E - 1 6.8 E t 1 24 5.L E-4 6.3 E - 2 5.8 E - 1 6.5 E + 1 j 25 5.6 E - 4 6.2 E - 2 5.6 E - 1 6.2 E + 1
; 26 5.3 E - 4 6.0 E - 2 5.4 E - 1 6.0 E + 1 27 5.1 E - 4 5.7 E - 2 5.2 E - 1 5.7 E + 1 28 4.9 E - 4 5.6 E - 2 5.0 E - 1 5.5 E t 1 4
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___ Cs_ _bR_ NOBLE GASES __ ICDItE ~ ~ ~ STACK VENT STACK (ENT l R/GNs R/GNv R/GIs R/Giv O 1.2 E - 2 3.2 E O 1.45 E 1 3.2 E F 3 1 8.5 E - 3 1.75 E O 8.6 E O 1.85 E t 3 l' 2 4.5 E - 3 1.0 E O 4. 7EO 1.0 E t 3 3 2.9 E - 3 6.4 E - 1 3.1 E O 6.2 E t 2 4 2.15 E - 3 4.6 E - 1 2.2 E O 4.6 E t 2 5 1.7 E - 3 3.65 E - 1 1.7 E O 3.65 E + 2 j 6 1.41 E - 3 3.0 E - 1 1.44 E O 3.0 E t 2 7 1.2 E - 3 2.55 E - 1 1.25,E p 2.6 E F 2 8 1.05 E -3 2.2 E - 1 1.08 E O 2.25 E 4 2 9 9.2 E - 4 1.98 E - 1 9.5 E - 1 2.0 E t 2 10 8.2 E - 4 1.79 E - 1 8.6 E - 1 1.8 E t 2 11 7.4 E - 4 1.61 E - 1 7.7 E -1 1.65 E t 2 12 6.9 E - 4 1.49 E - 1 7.1 E - 1 1.5 E t 2 13 6.4 E - 4 1.38 E - 1 6.6 E - 1 1.38 E + 2 14 6.0 E - 4 1.29 E - 1 6.1 E - 1 1.29 E t 2 15 5.6 E - 4 1.20 E - 1 5.6 E - 1 1.2 E t 2 16 5.3 E - 4 1.12 E - 1 5.4 E .1 1.13 E t 2 17 5.0 E - 4 1.05 E - 1 5.0 E - 1 1.05 E t 2 18 4.7 E - 4 1.0 E - 1 4.8 E - 1 1.0 E t 2 19 4.5 E - 4 9.5 E - 2 4.5 E - 1 9.6 E t 1 20 4.3 E - 4 9.0 E - 2 4.3 E - 1 9.1 E t 1 21 4.1 E -' 4 8.6 E - 2 4.1 E - 1 8.7 E t 1 22 3.9 E - 4 8.2 E - 2 3.9 E - 1 8.2 E t 1 23 3.7 E - 4 7.8 E -2 3.8 E - 1 8.0 E t 1 24 3.6 E - 4 7.4 E - 2 3.6 E - 1 7.6 E t 1 25 3.4 E-4 7.2 E - 2 3.45 E - 1 7.3 E + 1 E6 3.3 E - 4 6.9 E - 2 3.3 E - 1 7.0 E t 1 4 27 3.2 E - 4 6.6 E - 2 3.2 E - 1 6.8 E t 1
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