ML20073L186

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Unit Vent Monitor Readings for Site & General Emergencies
ML20073L186
Person / Time
Site: Callaway Ameren icon.png
Issue date: 09/20/1994
From:
UNION ELECTRIC CO.
To:
Shared Package
ML20073L159 List:
References
EPCI-94-05, EPCI-94-05-R00, EPCI-94-5, EPCI-94-5-R, NUDOCS 9410120357
Download: ML20073L186 (3)
v • d • e


Text

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CALLAWAY PLANT EPCI -

94 -

05 Rev. O

-4 EMERGENCY PREPAREDNESS

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DEPARTMENT CALCULATION COVER SHEET P 3 Callaway Plant 1

I.

SUBJECT:

Unit Vent Monitor Readings for Site and General Emergencies.

II. PURPOSE AND SCOPE:

A. Purpose The purpose of this calculation is to determine unit vent monitor (GT-RE-218) values, in Ci/sec, that will be used as indicators for determining whether a site or

general emergency should be declared following a release of radioactive materials from the Callaway Plant unit vent.

B. Scope This analysis will determine the release rate values for the unit vent monitor (GT-RE-218) which will result in a Site Emergency or General Emergency based on new accident source terms (ref. 2) and criteria established in NUMARC/NESP-007 (ref.1).

III. RESULTS:

A. Site Emeroency A value of >2.35E+8 Ci/sec should be used for a Site Emergency declaration in Group 1.C.1 of the EALs (ref. 3). l B. General Emeroency A value of >2.35E+9 Ci/sec should be used for a General Emergency declaration in Group 1.D.1 of the EALs (ref. 3).

i PREPARED BY: b_k k delesr kfhim 7//t/'t)/ # #

CHECKLIST  :

(Signature / Title /Date) p g, y g , g Results @

REVIEWED BY: &M d4 J 2/eA NJJe Mk 7 (9Ignature/ Title /Dat'd) 6d ftth4 4 References @

APPROVED BY: M A&ew1/ F/

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([('Signajure/k Title /Date)

Analysis @

O File Kl91.0018 CA-#2264 2/25/94 KDP-ZZ-00007 9410120357 941003 _> j PDR ADOCK 0500r F

EMERGENCY PREPAREDNESS f f DEPARTMENT Prepared by: _ / i llo/Y

, _F/bb hhh CECMTIM -InitidData (continuation sheet)

Callaw Plant EPCI- 94 - 05 Reviewed by: _ f[20 _

Initial /Date .

Page 2 of 3 IV. ASSUMPTIONS:

1. For the Site and General Emergency values, it is assumed that all the activity released is from a Loss of Coolant accident. This is a conservative assumption, since the LOCA isotopic spectrum gives the lowest Unit Vent Release Rate Value ,

for,the projected dose at the EAB (using 100 mrem TEDE and 500 mrem CDE Thyroid).

2. A release duration of one hour is assumed. This is consistent with NUMARC EAL Guidance (ref.1).
3. It is assumed that the release occurs with the reactor at 100% power. No holdup time in the conta nment or reactor building is used. Therefore, no decay of short-lived radionuclides is assumed.

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4. An average X/Q value of 1,3E-6 seejfn3 was used as an average of all wind -

O- directions frpm FSAR Table 2.3-82.  !

l V.

REFERENCES:

)

1. " Methodology for Development of Emergency Action Levels", l NUMARC/NESP-007, Rev. 2, January,1992. i l
2. "EP Dose Assessment Source Term", U.E. Calculation ZZ-341, Rev. O, l June,1994.
3. " Classification of Emergencies", EIP-ZZ-00101, Rev.17, June,1994.
4. "PC Dose Calculation Bases", Calc EPCI-94-03, Rev. O, September,1994.
5. " Manual of Protective Action Guides and Protective Actions for Nuclear incidents,

EPA-400-R-92-001, October,1991.

O File Kl91.0018 CA-#2264a 2/25/94 KDP-ZZ-00007

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EMERGENCY PREPAREDN::SS f pI_[NION, ozPiarNEx: gregerea dy, t}W W hh CALCULATION e

Initial /Date g (continuation sheet)

Callaway Plant EPCI- 94 -

05 Reviewed by: #M

/

7M M Initial /Date Rev. O Page 3 of 3 VI. ATTACHMENTS:

Attachment 1-a " Site and General Emergency Release Rate Values-LOCA".

Attachment 1-b " Site and General Emergency Release Rate Values-SGTR" VII. ANALYSIS:

For the Site nnd General Emergency EAL Indicators, two source terms were evaluated; a LOCA into the auxiliary building and through the unit vent, and a Steam Generator Tube Rupture with a release through the condenser and then through the condenser air removal system to the unit vent. The bases for these source terms are provided in Reference 2.

The Site Emergency Action Level indicator for " Abnormal Rad Levels / Radiological p Effluent" as described in the NUMARC/NESP-007 EAL document (ref.1) provides a y corresponding integrated child thyroid dose of 500 mR and a whole body dose of 100 mR at the site boundary (EAB) as a basis for monitor values. For a general emergency based on the same event, the doses are 1000 mR (whole body) and 5000 mR (thyroid). The basis also references EPA Protective Action Guidelines for the 1:5 ratio for whole body and child thyroid doses. This EPA document has subsequently been updated (ref. 5) and now uses the adult thyroid as the limiting organ for radiciodines. The adult thyroid dose was used in this analysis.

Additionally, the NUMARC EAL bases document suggest that a one hour release duration be assumed in establishing values in the EAL. This duration was used in this analysis. Equation 1 of Reference 4 was used to derive the release rate for a LOCA and a filtered Steam Generator Tube Rupture. Results are provided in Attachment 1-a for the LOCA and Attachment 1-b for the filtered Steam Generator Tube Rupture. Based on these results, the thyroid dose from a LOCA has the most limiting release rate. These values are summarized in the results section of this analysis (Section 11), and will be used as EAL Indicators for the Unit Vent Wide Range Gas Monitor (GT-RE-218).

O File Kl91.0018 CA 32264a 2/25/94 KDP-ZZ-00007

p -

ATT K M

.Eite and General Emern ncv Release Rate Values

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  • fu LOCA EPA-400 EPA-400 Table 5-1 Table 5-4 WEIGHTED WElGHTED ACTMTY TEDE DOSE RATE Thyroid DOSE RATE Unit TEDE Thyroid RELEASED % ACTfVtTY FACTOR FACTOR Conversion DOSE RATE FACTOR , DOSE RATE FACTOR ISOTOPE (Ci) Dec equiv. rem-cm3/uCl-Hr rem-cm3/uci-Hr mrem-m3/ rem-cm3 mrem-m3/uci-Hr mram-m3/uCi-Hr Kr-83m 2 79E+03 0 002 0 00E+00 1.00E-03 0 00E+00 0 00E+00 Kr-85 2 62E+04 0 014 1.30E400 1.00E-03 1.87E-05 O O0E+00 Kr-85m 144E+04 0 008 9 30E+01 1.00E-03 7.36E-04 0 00E+00 Kr-87 8 01 E +03 0 004 5.10E+02 100E-03 2.25E-03 O OGE+00 Ki-88 2 52E+04 0 014 1.30E +03 1.00E-03 1.80E-02 O OOE +00 Kr 89 5 72E+02 0 000 1.20E+03 100E-03 3. 7 7E-04 0 00E+00 1-131 2.3 7E +03 0 001 5 30E+04 1.30E +06 100E-03 6 90E-02 169E+00 Xe-131m 167E +04 0 009 4 90E+00 1.00E 4.50E-05 0 00E +00 1-132 1.16E +02 0 000 4 90E+03 7.70E + 03 1.00E-03 3.12E-04 4 91E-04 1-133 8 24E+02 0 000 1.50E+04 2.20E+05 1.00E-03 6.79E-03 9 96E-02 Xe-133 165E+06 0 907 2 00E+01 1.00E-03 1.81 E-02 0 00E +00 Xe-133m 2 54E+04 0 014 170E +01 100E-03 2.37 E-04 0 00E +00 1-134 9 75E+01 0 000 310E+03 1.30E +03 1.00E-03 1.66E-04 6 97E-05 l-135 3 32E+02 0 000 810E+03 3 80E+04 1.00E-03 1.48E-03 6 93E-03
Xe-135 4 40E+04 0 024 140E +02 1.00E-03 3.39E-03 0 00E+00 Xe-135m 1.22E +03 0 001 2.50E+02 1.00E-03 1.68E44 0 00E +00 Xe-138 4 82E+03 0 003 7.20E+02 1.00E-03 1.91 E-03 0.00E +00 Total NG 1.82E+06 1.002 00sE CONVERSION FACTOR 1.23E-01 1.80E+00 Total 12 3 74E+03 (2/NG ratio 2.06E-03 ,

S E. X/O Release Rate DCF MCF Release Duration Dose sec/m3 uCi/sec mrem-m3/uCi-hr Unitiess hr mr IEDE 1.30E-06 6 88E+08 1.23E-01 1.10 1 100 CDE Thy 1.30E-0C 2 35E+08 180E+00 1.10 1 500 l

G E. X/O Release Rate Dcf MCF Release Duration Dose l Urutiess hr mr j sec/m3 uCi/sqc mrem-m3/uCi-br ,

IEDE 1.23E-01 1.10 1 1000 j 1.3GE-06 6 88E$9 CDE Thy 1.30E-06 2.35E+09 1.60E+00 1.10 1 6000 l

l 9/16194 101LOCA.XLS

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . __________-__.- - _- __ ___.- _ = _ _ _ _ . . _ _ _ _ _ _ - - - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ .

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\ Site and General Ei jgy_Edeve Rate Values j ', -

SGTR f filterid throuah Unit Vent)

EPA-400 EPA-400 CORRCCTED Tabte 5-1 Table 5-4 WElGHTED WEGHTED ACTMTY Filter ACTMTY TEDE DOSE RATE Thyroid DOSE RATE Und TEDE Thyrok1 RELEASED Corr Fact RELEASED  % ACTMTY FACTOR FAC1OR Converston DOSE RATE FACTOR DOSE RATE FACTOR ISOTOPE (Ci) (CD Dec. equiv tem-cm3/uCi-Hr remem3/uCi-He mrem-mbem-cm3 mrem-m3'uCl-Hr mrom-m3MHr Kr-83m 4 82E+00 1 4 82E +00 0 004 0 00E+00 100E-03 0 00E+00 0 00E+00 kt-85 177E +00 1 177E +00 0 001 130E

  • 00 1 120E*00 0 001 120E + 03 100E43 108E43 0 00E + 00 1-131 313E-01 01 313E-03 0 000 530E*04 130E
  • 02 100E-03 17 ?E-04 0 00E *00 Xe-138 105E +01 1 105E+01 0 008 7 20E+02 100E-03 5 65E-03 0 00E*00 Total NG 1.34E + 03 1.34E+03 1.002 oosE coNVE%ON F ACTc 8 23E C2 3 82E 03 Total 12 1.11 E + 00 1.11E-02 '

12tNG ratio 8 32E-04 8 32E-06 S E. X;Q Release Rate DCF MCF Releas Duraton Dose socim3 uCi/sec mrem-m3/uCl-hr Umtress hr mr If DE 130E-06 103E+09 8.2 3E -02 1.10 1 100 COE 1 hy 130E-06 1 116 ' t 3 82E-03 1.10 1 500 G E. X/O Release Raio DCF MCF Release Duraron Dose sec/m3 uCi/sec rnrem-m3'uCl-hr Uruttoss hr mr TEDE 130E-06 103E + 10 8 23E-02 1 10 1 1000 COE Thy 130E-06 1.11 E

  • 12 3 82E43 l 1.10 1 5000 101STGUV XLS Page 1 9/20/94

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EMERGEN' v

ErlON LEVELS [m

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i' Group 1 ABNORMALRADIATION EVENTS Offsite Events UNUSUAL EVENT ALERT SITC EMERGENCY GENERAL EMERGENCY A. B. C. D.

Any Unplanned Release of Any Unplanned Release of EAll Dose Resulting From an Actual or EAll Dose Resulting From an Actual or Radioactivity to the Environment That Radioactivity so the Environment That imminent Release of Gaseous huminent Release of Gaseous Execeds 2 Times the Radiological Exceeds 200 Times the Radiological Radioactivity Exceeds 100 mrem TEDE Radioactivity Exceeds 1000 mrem TEDE Effluent Control Limits in the ODCM, EfGuent Control Limits in the ODCM, or 500 mrcm CDE Thyroid for the Actual or 5000 mrem CDE Thyroid for the (APA-ZZ-01003) for 260 minutes. (APA-ZZ-01003) for 215 minutes. or Projected Duration of the Release. Actual or Projected Duration of the Release.

MODES: At AllTimes MODES: At AllTimes MODES: At AllTimes MODES At AllTimes Indicators Indicators Indicators Imlicator s

1. M of the following: 1. M of the following: Apr of the following: Any of the following:
a. A valid alarm and reading on a. A valid alann and reading on any efnuent moni'or: any effluent monitor: *I. A valid reading on the Unit Vert + 1. A valid reading on the Unit Vent monitor, GT-RE-21B (Channel 213) monitor GT-RE-21B (Channel 213) l IIB-RE-18 (Channel 186) IIB-RE-18 (Channel 186) > 2.35E+8 pCi/sec for 15 minutes. > 2.35E+9 Ci/sec for 15 minutes.

GT-RE-21B (Channel 213) GT-RE-21B (Channel 213)

Gil-RE-10B (Charmel 103) Gil-RE-108 (Channel 103) 2. A valid dose projection indicates >100 ? A valid dose projection indicates mrem TEDE or >500 mrem CDE :1000 mrem TEDE or >5000 mrem

b. The valid reading is 2 times b. The valid reading is 200 times thyroid dose at the EXCLUSION CDE thyroid dose at the the Ili Hi alann setpoint (trip the IliIli alann setpoint (trip AREA ItOUNDAltY using inplant EXCLUSION AREA IlOUNDARY setpoint) value. setpoint) value. rad data or field monitoring team using inplant rad data or ficId
c. 'the release cannot be c. 'the release cannot be survey results. monitoring team survey results.

terminated within 60 minutes tenninated within 15 minutes of the alann actuation. of the alann actuation. 3. Field survey results at the EAD 3. Field survey results at the EAB OR OR corresponding to > 100 mrem /hr corresponding to > 1,000 mrem /hr

2. 130th of the following: 2 Both of the following: TEDE for I hour (or expected to TEDE for I hour (or expected to
a. Confinned sample analysis a. Confinned sample analysis continue for I hour) or > 500 mrem /hr continue for I hour) or indicates that a release indicates that a release CDE thyroid for I hour ofinhalation. > 5,000 mrem /hr CDE thyroid for i exceeding 2 times the exceeding 200 times the ,

hour ofinhalation.

applicable values of the applicable values of the ODCM (APA-ZZ-01003), has ODCM (APA-ZZ-01003), has occurred. occurred.

  • Declare the event using this indicator
  • Declare the event using this indicator
b. The release cannot be b. The release cannot be only if an actual dose assessment per only if an actual dose assessment per tenninated within 60 nunutes, terminated within 15 minutes. Indicator 2 cannot be perfonned in 15 Indicator 2 cannot be performed in 15 minutes. minutes.

RERP Rev.I8 Page 1 of 10 07/94

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