ML20003G446
| ML20003G446 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/24/1981 |
| From: | Hovey G METROPOLITAN EDISON CO. |
| To: | Barrett L Office of Nuclear Reactor Regulation |
| References | |
| LL2-81-0111, LL2-81-111, NUDOCS 8104290457 | |
| Download: ML20003G446 (1) | |
Text
Metropolitan Edison Company
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Attn:
Mr. Lake Barrett, Deputy Director CD U. S. Nuclear Regulatory Co= mission 1
to 9
c/o Three Mile Island Nuclear Station Middletown, Pennsylvania 17057
Dear Sir:
Three Mile Island Nuclear Station, Unit 2 (IMI-2)
Operating License No. DPR-73 Docket No. 50-320 Submerged De=ineralizer System During discussions with members of your staff, you requested that we review the potential for the generation of explosive mixtures is the spent SDS ion exchange vessels. This letter responds to that request.
The potential of an explosive gas =ixture can co=e about as a result of the dissociation of water under a radiation field. Calculations show that the SDS zeolite vessels will re=ain structurally sound even in the event of a hydrogen detonation. The vessels, designed and tested for 24.8 service pressure, will be continuously vented at one atmosphere to the atm.
(initiated at one at=osphere) is 18.05 ats {se for any hydrogen explosion SDS offgas system.
The maxi in pressure pu Furthermore, it is improbable that an explosive hydrogen mixture vill develop. Available water radiolysis data for irradiated zeolite syste=s indicate that recombination will occur and subsequent hydrogen / oxygen concentrations would be non-explosive.
'n'c believe that this response fully addresses your concern. Should you wish to discuss this matter further, please contact Mr. L. J. Leh=an, Jr.
of my staff.
Sincerely, G. K. Hovey Vice-President and Director TMI-2 GKH: LJL:vj f cc:
- 3. J. Snyder, Program Director, TMI Office Handbook of Tables for Applied Engineering Science, CRC Press, Talle 3-53,
" Detonation Velocities for Various Gas Mixtures", 2nd Ed.,1973. fe l e
8104290 C.
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