ML18044A962

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Emergency High Range Effluents Monitor.
ML18044A962
Person / Time
Site: Palisades Entergy icon.png
Issue date: 04/26/1980
From:
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18044A959 List:
References
EI8-4, NUDOCS 8006040316
Download: ML18044A962 (7)
v • d • e


Text

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PALISADES NUCLEAR PLANT. PROC NO EI8-4 EHERGENCY Il1PLEMENTATION PROCEDURE PAGE 1 Oj 7 EMERGENCY HIGH RANGE EFFLUENTS REVISION 0 TITLE i MONITOR DATE 4/26/80 REVIEWED BY APPROVED PRC .... DATE 4/18/80 QA-05 1.0 PURPOSE To determine noble gas effluent releases from plant stack in event that stack monitor RIA-2318 goes off-scale.

2.0 REFERENCES

NRC Submittal for Palisades Plant, "Requiements Resulting From Review at Three Mile Island 2 Accident: Actions Taken in Response to", dated.

December 27, 1979, Section 2.1.8.b(l)

  • 3.0 . PREREQUISITES 3.1 Special.Equipment 3.1.l High-range,. battery-powered sur*Jey meter (Technical Associates Model CP-~m or equivalent)~

3.1.2 ~ E..:igh-range, unde:r-~ater .icid..zatic;~ .c::-i2.::.~e-:-s (T2:::.hn:..cal P.;ss:::;c.iat=s ~!0°::.;l DMt1.-100 or equivalent} which are located in shielded enclosures on

  • Auxiliary Building roof, elevation 639'. ***

4.0 PRECAUTIONS AND LIMITATIONS 5.1 A supply of batteries will be available for the survey meters. The

. battery in the meters should be changed-every 24hours when in use to ensure conti~nued operation of the instrument without loss of function.

4. 2 I~ the eve:i,t th=.t the h.ign-:::a.,..,ga iodza.tion. chambers or the stack

.effluent monitor require access after an accident, a high-range survey instrument (Eberline Nodel 6112_"Teletector" or equivalent) shall be

  • used when accessing the-:area *. The- attempt. should.- be aborted if dose rates exceed iOO R/hour. * **
  • 5.0 * - PROCEDURE

. :s.1 Ins t.alla t:ion . .. ** ....... -..:...

5~1.1. Retrieve two high...:range survey meters-fro:il their* emergency storage-location

  • in the '.l'e.c~I)i_cal* .~.l1pport Center. . ... . _

.. 5.1. 2 Insert *a "D" size battery and check meter function. - *

  • 5.1. 3 Install meters in hallway outside Control Room by connecting overhead cables from ionization chambers. Cable A is from stack detector while Cable B is from relief valve detector.

/

8006040

PALISADES NUCLEAR PLANT PROC tlO EIB- 4

.l------D-IER--G-EN_c_Y_n_1_P_L_n_1E_N_T_A_r_1_o_N_P_R.,..O_c_ED_UR_E_ _- i PAGE TITLE i EMERGENCY HIGH RANGE EFFLUENTS REVISION *o 2 OF 7 consumers power MONITOR DATE

  • 4i26/80 5.1.4 To preve*nt becoming confused, meters should be labeled in any convenient manner after installation.

5.2 Reporting 5.2.1 Obtain time since initiation of accident from Health Physicist or Control Room.

5.2.2 Check battery function before-each use of instruments.

5.2.3 Determine background rates from relief valve detector at a time when no steam release is occurring.

5.2.4 Obtain reading from stack detector and subtract background rci.te.

NOTE! An unexpectedly high.or off~~cale reading may indicate high activity in the PenetrationRoom filter box on the 639' level.

Subject to the precautions o'.: Section 4.2 determine the back-ground contribution from act.tvity in the box. using a high-.

range> extended re~ch survey meter (Teletector or equivalent}.

Determine release rates by interpolation from Dose Rate vs. Release Rate curves*** (Figure 1). ....

Activity release rates in steam releases from relief valves are also determined in the above manner. Results are interpolated from Figure 2.

Background may he determined follo~*ling the. release.

  • Release rates fur post-accident times greater than six days are determined
  • from Figure 3.

Record results on Data Sheet.

Readings should be repeated approximately every fifteen. (15) minutes until.

the Health Physicist request"lqnger intervals or*the Site Emergency Director determines thay are no longer required.

"6~0 **.ACCEPTANCE CRITERIA ,  : .*. :, *~*.**.

N/A *:. , ...

. RECORDS AND ATTACHMENTS 7". l Figure 1, * Dose Rates vs.* Time for Various Activity Release Rates From the Stack".

7 .2 Figure 2 ~ "D.ose Rates vs. :Time for Various Activity Release Rates From the.

Relief Valve Vents".

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PALISADES NUCLEAR PLANT PROC NO EI8~~

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  • ro.*' . * . EMERGENCY . IMPLEMENTATION PROCEDURE PAGE 3 OF 7

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-~'Vt!#- ---* TllLE ~ EMERGENCY HIGH RANGE EFFLUENTS REVISION 0 consumers Power MONITOR DATE 4/26/80 7.3 Figure 3, "Dose Rates vs. Release Rates for-Times Greater Than Six Days".

7.4 Data sheet for determin.:..ng stack and relief valve release rates.

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I Data She~t for Dete~nining Stadk ** - ;

and Steam Dump Release Rates

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STACK TOTAL DOSE BACKGROUND. NET RELEASE INIT~S TIME . or RATE (R/hr) *nosE RATE DOSE RATE RATE

  • .* STEAM DUMPS * , (R/hr) (R/hr) (Ci/ sec) DATA H.P.

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Reviewed by Site B111m.*gency Director________________

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