ML19224D291
| ML19224D291 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/05/1979 |
| From: | Buhl A NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | |
| References | |
| NUDOCS 7907110295 | |
| Download: ML19224D291 (1) | |
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April 5,1979 Guhl Dra f t ma dD l'OTEflIIAL CORE flELT SCEflARIO AT Till DASED off C0flDITI0ft5 Ol' 4/4/79
.D Assumptions in analysis: primary coolant pump fails. liigh pressure coolant injectic,n operates to fill vessel. Pressure increases to 2500 psia, liigh pressure coolant assumed to fall. The time of high pressure coolant failure is seven days following reactor trip and is time 0 in the accident scenario described.
Core fielt Times 1
I Time Comment 0
liigh Pressure Coolant Stops 28 hrs Core uncovers 29 lielting Starts 30 hrs 10 min.
Core falls into plenum 30 hrs 15 min.
l.ower head falls Containment Parameters s
Pressure without Pressure with Deptie of Concrete Case Time llvdrogei Hurning Ilydrogen Burning Penetration Connents (psla)
(psia)
(cm)
- J Containment
- o Cooling Operates 39 hrs 15 min.
23 63 0
If sprays operate, release M
47 hrs 24 91 92 category PWR 7; i f sprays
[
64 hrs 27 88 106 fall, release category PWR 6 Og Sprays 0 : era te, 30 hrs 15 trin.
29 95 0
Predict containment failure 1
4 no cooling of 4 7 hrs 37 88 147 by over pressure at 169 hrs containment 64 hrs 43 55 178 release category PWR 7 m
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