ML20210T036
| ML20210T036 | |
| Person / Time | |
|---|---|
| Site: | Satsop |
| Issue date: | 11/27/1974 |
| From: | Harold Denton US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| CON-WNP-1729 NUDOCS 8605290634 | |
| Download: ML20210T036 (3) | |
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,i 310.1 a
l 310.0 ACCIDENT /qALYSIS BRANCH 310.15 (3.5)
We have revieved the information presented in the PSAR regarding tornado missiles and found the impact velocities listed in Table 3.5-3 too low.
Based on our evaluation we would consider the following missile impact velocities appropriate for the desi n of the WPPSS 3 & 5 plants (which E
are located in tornado Region II).
A
- Wood plank 4" x 12" x 12' 200 lb 350 rp3 B - Steel pipe
, 3" 6, 10' long, 78 lb 175 fp3 schedule 40 C,- Steel rod 1" 6 x 3 ' long 8 lb 260 g3p D,- Steel pipe 6" 0, IS' long, 28,5 lb 175 fpu schedule I,0
' 1 - Steel. pipe 12'.' 9, 15 ' lor.g, 743 lb 175 fpg schedule 40 F - U~ility pole
'13.5" d x 35' long 1490 lb 175 t
g3p C - Automobile 20 ft frene.a1 4000 lb 90 fps area These missiles are to be considered as striking in all directions.
Missiles A, B C, D, and E are to be considered at all altitudes and atssiles F and G at altitudes less than 30 feet above all grade levels within 1/2 mile of the facility structures.
L 310.16 frovide drawings which show location (azimuth and elevation)
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(6.2.1) and placement of the Shield Building Ventilation System l
intake and return headers.
l 310.17 Indicate the location of the 13 pressure sensors in the (6.2.1)
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