ML19308C184
| ML19308C184 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/14/1979 |
| From: | Ronald Bellamy NRC - NRC THREE MILE ISLAND TASK FORCE |
| To: | NRC - NRC THREE MILE ISLAND TASK FORCE |
| References | |
| TASK-TF, TASK-TMR NUDOCS 8001210520 | |
| Download: ML19308C184 (2) | |
Text
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NUCLEAR REGULATORY COMMISSION b
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WASWNGTON, D. C. 7055L
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AUG 141979 MEMORANDUM FOR:
Interview Files FROM:
Ronald R. Bellamy Task Group 3
SUBJECT:
INFORMAL INTERVIEW WITH MINE SAFETY APPLIANCES COMPANY On Friday, August 10, 1979, I informally interviewed two technical representa-tives of Mine Safety Appliances Company, Richard Porco and Ronald Mayercheck, of their Nuclear Filter Systems Division.
The discussions were held here in Bethesda. MSA supplied all of the original filter systems and components for Three Mile Island Unit 2, to include the auxiliary and fuel handling building ventilation systems, the supplementary filtration system installed on the roof of the auxiliary building, the ventilation and filtration system for the EPICOR-2 liquid radwaste system, and replacement components (HEPA filters and carbon adsorbers) for the filtration systems used to reduce releases of radio-activity to the environment generated by the accident.
The purpose of this preliminary discussion was to determine what information MSA possessed that would be useful to our investigation. Mr. Porco indicated that the MSA files in Pittsburgh would be made available to me at my con-venience and copies of anything nonproprietary would be supplied.
The type of information that should be available includes the specifications for the filter systems, qualification and acceptance tests (procedures and results) for all systems and components, certification tests for all replacement com-ponents (specifically activated carbon), and possibly results on carbon or HEPA filters removed from filter systems that had witnessed the accident.
I plan to spend 2-3 days at the MSA offices during September to acquire the information useful to our SIG effort.
We also discussed two specific aspects of activated carbon that MSA was involved with prior to and during the TMI incident. First, carbon for fil-ter systems is usually impregnated with suitable chemicals to enhance the radiofodine removal properties. MSA supplied carbon to TMI impregnated with both potassium iodide and triethylenediamine, and I believe it would be use-ful to observe this impregnation process.
Although the process is not generally observed by personnel not associated with the respective carbon supplier, Mr. Porco indicated that the impregnation process would be available for my inspection if his supervisor, Mr. Robert L. Campbell, Manager' of Filter Products Division, received such a request in writing from M. Rogovin. Accord-ingly, I plan to prepare such a request for Mr. Rogovin's signature.
8001210 NO
, Secondly, MSA operates a radiochemical laboratory in order to detennine the removal efficiency of carbon samples for radiciodine prior to installation in the filtration system, and also after service, to verify lack of degrada-tion (in accordance with Technical Specifications).
I plan to arrange to be at MSA when they are conducting such a test and witness implementation of the actual test procedures.
The willingness of MSA to assist our SIG effort indicates no formal deposi-tions should be required.
I expect to get sufficient infonnation from MSA to describe the filtration systems and cleanup components as supplied to TMI-2, the qualification and acceptance tests performed, and the condition of some (MSA did not supply 100%) of the activated carbon used as replace-ment in the TMI-2 filtration systems.
I also will be able to verify the MSA impregnation process and their laboratory testing of carbon for radioiodine removal.
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Ronald R. Bellamy Task Group 3 cc:
G. Frampton R. DeYoung F. Miraglia Group 3 Members S
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