ML19290A231
| ML19290A231 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/29/1979 |
| From: | Novak T Office of Nuclear Reactor Regulation |
| To: | Mattson R Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19290A225 | List: |
| References | |
| NUDOCS 7910240140 | |
| Download: ML19290A231 (1) | |
Text
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WASHINGTON. O. C. 20555
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-kW2$t$19 MEMORANDUM FOR:
R. J, Mattson FROM:
T. M, Novak
SUBJECT:
CHRONOLOGY OF EVENTS:
TMI-2 HYOR0 GEN BUSBLE I have reviewed Enclosure 3 of your August 21 memo and offer the following additional comments, With regard to any discussions I had concerning the potential for a Hz explosion inside the reactor vessel, the only conversation I had occurred the evening of March 31. The discussion took place between V, Stello and myself at the NRC trailer complex at TMI, At that time Stello infomed me of a concern staff personnel in Bethesda had regarding the potential for a H2 explosion inside the reactor vessel, I recall Stello mentioning he did not believe the concern was real but was unable to convince Bethesda staff personnel to change their view, With regard to any information I may have received from B&W regarding the presence of free 0 in the vessel, I have no recollection of any information 2
transmitted to me on this subject, I do recall having several conversations with B&W personnel during the evening hours of March 29 and for the first few hours of March 30 regarding a variety of subjects, but primarily concerned with the state of core coolability and the size of the gas bubble inside the reactor coolant system, My personal recollection is that the members of the staff were evaluating the pros and cons of maintaining the conditions that existed in the reactor coolant systems as opposed to depressurizing the system, In reviewing the notes that were available in the IRC, there was indication that B&W had discussed free 02 after 10:00 p,m, on March 31, 1979, I discussed these notes with Don Davis of the staff and he does recall discussions between staff personnel with regard to the amount of 02 that might be present in the gas bubble, He stated that it was possible he had discussions with S&N (Nitti) regarding this concern. Don Davis also thought that Steve Hanauer was the staff member with whom he had these discussions, I talked to Steve Hanauer on this subject and he noted that he first arrived at the incident center at 2:00 a,a. on March 31 and recalls discussions with Davis regarding H2 solubility but none with regard to 0.
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Thomas M, Novak 2226 172 7910249gqo r