ML20090J857

App 3A of RESAR-SP/90 Westinghouse Advanced PWR Module 3, Introduction & Site, Design of Structures,Components, Equipment & Sys - Interfaces

ML20090J857
Person / Time
Site:	05000601
Issue date:	03/31/1984
From:	WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:
Shared Package
ML19269A137	List: ML20090J835 ML20090J839 ML20090J842 ML20090J845 ML20090J848 ML20090J852 ML20090J854 ML20090J857 ML20090J860 ML20090J863 ML20090J866 ML20090J869 ML20090J872 ML20090J875 ML20090J878 ML20090J881 ML20090J885 ML20090J890 ML20090J892 ML20090J894 ML20090J898 ML20090J905
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.--.-

-