ML20090J857
| ML20090J857 | |
| Person / Time | |
|---|---|
| Site: | 05000601 |
| Issue date: | 03/31/1984 |
| From: | WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | |
| Shared Package | |
| ML19269A137 | List: |
| References | |
| NUDOCS 8405230331 | |
| Download: ML20090J857 (1) | |
Text
,
.\\
3
- - s i
APPENDIX 3A
%O g[ SIGN OF STRUCTURES. COMPONENTS. EGUIPMENT. AhD SYSTEMS L INTERFACES k
3A.3 Wind and Tornado loadinas
- y t
3A.3.1 Wind Loadinas s
u The *1PB may be located at a site where the Operating Basis Wind is less than Jor equal to the magnitude-of 130 MPH used in design. The Operating Basis Wind i
generally has little influence on the safety of the NPB since most items sub-jected to wind loads must also be designed for the tornado wind loads which j
are subs'tantially higher.
+
s The magnitude of 130. aph' tias been selected based on the most severe location identified in ANSI A58.1 " Building Code Requirements for hlinimum Design Loads in Buildings and Other Structures."
3A.3.2 Tornado loadinas O
i
,, u The tornado used in the design of the NPB is the tornado specified in ANSI /ANS s
~ 2.3-1983 " Standard for Estimating Tornado and Extreme Wind i:haracteristics at s
9 Nuclear Power Sites."
Since ~the nuclear power. block is intended for a wide i
ranse of sites, the maximum windspeed is selected as 320 mph which is the
[
maximum. specified corresponding to a probability of 10 per year for any
-I locatictr'In the U.S.
1 s
The ANSI /ANS 2.3 standard is based on detailed analyses and evaluation of the O
d$ta by experts leading to issue of the concensus standard in 1983.
It represents more recent in-depth evaluation than was incorporated in Regulatory Guid'}.76andtheStandardReviewPlan.
~
e O
~
s h
O 8405230331 840516 PDR ADOCK 05000601 K'
PDR WAPWR-I&S 3A-1 MARCH, 1984 0467e:1D/
')
l l
.---.a.--.-
-