ML19264B534
| ML19264B534 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 05/11/1972 |
| From: | Vandenburgh D YANKEE ATOMIC ELECTRIC CO. |
| To: | US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8011170176 | |
| Download: ML19264B534 (3) | |
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LICENSE i 0. DPR-3 \\D00 KIT NO. 50-29\\
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a THE Cfji.Y 'C*d.!GE Ih-!E BORON DILUTION ANALYSI COURS AT POUER CONDITIONS WHERE.THE II"REASE IN BORON CON"ENTRATION 15 TROM IMO TO 2000 PPP.
ANAU5I5 SHOWS THAT THE REdCTIVITY ADDITION RATE IS PROP 01:7IONAL IO THE INITI AL BORON CONCEN-TR ATI ON.
THE FUR. F0JER BOR0" DILUTION REACTIVITY ADDITION RATE DURING FOUR LOOP OPERATION INCREA573 FROM SXIC -6 DELTA E/K/3EC TO 9.4 X 10-6 DELTA K/K/SEC.
REFERRING TO FIGURE 401-1 IT 15 SEEN TH/T THE MINIMUM DNS RATIO DURING THE TRANSIENT
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ACTUALLY IMPROVES, GOING FROM 1. 61 TO 1. 63.
TOR TM?.EE LOOP OPERATION TPE REACTIVITY ADDITION RATE DURf.G ' A BORON DILUTION I"CIDENT I" CREASES TROM 9.2 X LO-6 DELTA K/K/5EC TO 10.7 X 10-6 DELTA K/K/SEC.
TROM FIGURE 4C1-2 IT IS SEE" THAT THE MINIMUM D:.'3 RATIO DURING THE TRANSIENT DECREASES FRON 1.S4 TO 1.92.
IN EITHER MODE OF OPERATION, A LARGE MARGI" TO D"3 STILL EXISTS.
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CONTROL NO:
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DATE OF DOC:
DATE FI,C'D LTR MDC FFT ' OTHER Ucsebcro. Mass.
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