ML20213E179
| ML20213E179 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 06/11/1982 |
| From: | Parr O Office of Nuclear Reactor Regulation |
| To: | Schwencer A NRC |
| References | |
| CON-WNP-0523, CON-WNP-523 NUDOCS 8206230146 | |
| Download: ML20213E179 (1) | |
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SU3 JECT: WNP-2 TOR'lAUJ MISSILE PROTECTION FOR DIESEL GEf1ERATOR EXHAUSTS. '
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This is in answer to your note to me of June 5,1982 in which you pointed out that WPPSS management stated that W:!P-2 was designed and constructed to Regulatory Guide 1.70 and that the new SRP should not be a binding requirement on k.'ilP-2.
Regarding tne SRP not being binding on WNP-2, compliance 'aith the SRP is not manda tory. During our revie.1 of OLs however we utilize the SRP as Since the initial issue of the SRP (Revision 0 - flov2mber 24,1975) guidance.
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3.5.1.4 has required the staff to consider a tornado transported utility pole up to 30 feet above all grade levels within g mile of the facility.
As stated in Attachment 1 to their letter of May 14, 1902 the appli cant has comnitted in the FSAR to consider the, utility pole up to 30 feet above plant grade. They have not committed to consider "up to 30 feet above all grade levels within 4 mile of the facility."
For the WNP-2 site there is a bluff witnin 4 mile of the facility approximately 10 feet above plant grade.
Should a utility pole be picked up. from the top of this bluff 'y a tornado, it u
could approach the facility (assuming it mtisses the intervening cooling y
towers) at a 40 foot height and tnus Undanger the diesel generator exhausts.
To resolve this matter I suggest that we request WPPSS to respond to either of tuo courses of action; (1) that they have control of the bluff area of concern and that no loose materials including utility poles will be stored there during the life of the facility (I understand that the property including the bluff celongs to DOE), or; (2) that the failure of one of tha two uiesel generator exaaust openings (there are two diesel exhaust openings per diesel) util not result in the diesel's failure to start and produce sufficient power to safely snutdown the reactor assuming a single failure in the redundant diesel generator system.
It would of course, be equally accep-table if.iPPSS would elect to provide positive protection for the diesel exhaus ts.
Lastly, you may want to point out to WPPSS that the purpose of Regulatory Guide 1.70 is to indicate the infonnation to he provided in SARs and estab-lishes a unifona format for presenting the infonr.ation.
It is not a design and-construction document as the applicant states.
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