ML18044A961

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Determination of Extent of Core Damage.
ML18044A961
Person / Time
Site: Palisades Entergy icon.png
Issue date: 04/29/1980
From:
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18044A959 List:
References
EI8-3, NUDOCS 8006040315
Download: ML18044A961 (8)


Text

  • . . PALISADES NUCLEAR PLANT EMERGENCY IMPLEMENTATION PROCEDURE PROC HO EIB-3 PAGE 1 OF 8 REVISION O
  • consumers Power *TITLE. DETERMINATION .OF OF CORE I DAMAGE DATE 4/29/80 REVIEWED BY PRC -DATE 4/28/80 QA-05 1.0 PURPOSE To provide a method of estimating the degree of core damage during accident conditions.

DATE 2. 0 :REFERENCES 2.2 2.1 Palisades Nuclear Plant, FSAR Table 11-1. 3.0

    • N/A . 4. 0 PRECAUTIONS AND LIMITATIONS 5.0 5.1 5.1.l 5.1.2 5.1.4 The .attached tables are based.on equilibrium core activities and Reg Guide i. 4 (Reference 2 2) release rates. Depending on core J.if e at time of accident these tables may erroneous results. PROCEDURE Determining Damage From 0 to 24 Hours After:Accident Determine tne dose rate from the Control Room entrance radiation mon:ttor.

This monitor appears as 1111 on the area radiation monitor strip chart recorder (RR".'"2302).

Absolute dose rate is obtained by subtracting normal.background

(#11 reading before t=O) from the dose rate after accident occurs.

in Figure 1 to determine percent failed fuel. If the point determined is between two curves,, state results *as range between those* curves. (ie, 10%-50%, etc.).

  • Record results on data shee*t.

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. ' @. . . . PALISADES NUCLEAR PLANT EMERGENCY IMPLEMENTATION PROCEDURE . . Tl T LE .. DETERMINATION OF EXTENT OF CORE DAMAGE PROC tlO EI8-3 PAGE 2 OF 8 REVISION o . DATE 4/29/80 I . consumers Power 5.2 Determining Damage.for Greater*thari 24 Hours 5.2.2 Determine dosa. rate from monitors RIA 1805, 1806, 1807 and 1808. These monitors appear as follows On strip chart recorder RR-3202: RIA No. 1805 1806 . 1807 1808 . ! Recorder Point No

  • 19 20 21 22 Absolute dose rate is found by subtracting normal background (see 5.1.2). If four readings are 0btained>

use appropriate curves in Figures 2-5 and find an average value. Record __ r.esults on data sheet and submit for review by Health Physicist .and Site Emergency Director.

6.0 ACCEPr:ANCE N/A .... _ 7.0 ATTACHMENTS AND RECORDS 7.1 Figure 1 -Dose. Rc;i.te V?. Time for Control Rcom Entrance Monitor. 7.2 . l'igure .2 -Dos.e Rate vs. Time for Containment

/}1805 7 *. 3 Figure 3 -Dose Rate vs.

for Containment Monitor

7.4 Figure

4 -:-.Dose Rate vs. Time for Containment Monitor #1807. . 7.5 Figure 5 -Dose Rate vs. Time for Containment Monitor-ffl808

  • 7.6. . Data sheet. for determining extent of core damage *.. Htv&&ii:IQ!

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DATA. SHEET FOR DETERMINING EXTENT OF CORE DANAGE ..

  • EI8-3 Rev. 0 Page 8 4/29/80 Time (Post'-Accident)

Hours, Days I Noni tor Location* . ---.. ........ ---... Dose Rate % Failed Fuel >-. Technician . , . Reviewed by Health.

Reviewed by Site Ernerg.