ML19318A655
| ML19318A655 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 09/10/1979 |
| From: | Barrett L, Lynch O NRC - NRC THREE MILE ISLAND TASK FORCE, Office of Nuclear Reactor Regulation |
| To: | NRC - NRC THREE MILE ISLAND TASK FORCE |
| References | |
| TASK-TF, TASK-TMR NUDOCS 8006230594 | |
| Download: ML19318A655 (2) | |
Text
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September 10, 1979 MEMORANDUM FOR:
Files. Task Group 3 NRC/TMI/Special Inquiry Group FROM:
- 0. D. T. Lynch, Jr.
NRC/TMI/Special Inquiry Group 3
SUBJECT:
INTERVIEW 0F LAKE BARRETT ON TMI EMERGENCY RESPONSE I met with Lake Barrett from 2:35 te 3:20 p.m. on August 28, 1979, to discuss the flow of radiological infomation thru the Incident Response ' Center (IRC).
In addition, the Atmospheric Release Advisory Capability (ARAC) provided by Lawrence Livermore Laboratory (LLL) was also discussed.
A brief summary of these discussions it provided below.
Use and Disposition of ARAC Product:
ARAC plots were received from Bernie Weiss, who also gave copies to Hulman's group.
Barrett looked at ARAC plots, but didn't do much with ig.
It didn't have y
He believes that he got traces (sec/m ) and some dose a source term.
q traces.
1 He was unaware of the source tenn used by ARAC even at the time of this
]
interview.
(It was unity, i.e., 1 Ci/sec.)
Barrett was unaware of what the relative concentration (dot plot) plot Was.
1 Before the TMI accident he didn't know what ARAC was or what it could do.
He had never had training on the system.
i l
Barrett indicated that although he was familiar with Regulatory Guide 1.109, he had never performed any drills in offsite dose calculations for an emergency scenario.
Barrett, with Martin and Congel, use ratio withdoseratesandh plots to develop rough source term.
ARAC product scale was too big to be of value at TMI.
Barrett wasn't aware a'2 km grid was being used by ARAC nor that the scale could be varied.
He was not aware of I&E doing any dose predictions.
They gave the job to Barrett.
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. Radiological Information Flow in IRC:
Barrett indicated the data they received fron the site was very poor.
He arrived at the IRC on Wednesday, March 28, at 11:00 p.m.
Spent more of his time on plant systems than on off-site stuff, even though Denton wanted off-site data.
Note:
Interview cut short.
I will return to obtain more details on radiological information thru IRC.
ARAC Utility - Retrospect Barrett indicated, had he been familiar with full ARAC capability, his actions regarding the 1200 mR/hr reading on March 30, probably would have been different.
He would certainly be more concerned as to where the 1200 mB/hr was observed, how long and of what nature.
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- 0. D. T. Lynch, Jr.
NRC/TMI/Special Inquiry Group 3 cc:
G. Frampton R. DeYoung F. Miragliav/'
Joan Skoff Group 3 Members 4
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