ML20195G610

Ack Receipt of 880908 Memo & Estimation of 300-yr Dose to High Density Polyethylene High Integrity Containers for Low Level Waste Disposal

ML20195G610
Person / Time
Issue date:	09/24/1988
From:	Moeller D NRC ADVISORY COMMITTEE ON NUCLEAR WASTE (ACNW)
To:	Stella M NRC ADVISORY COMMITTEE ON NUCLEAR WASTE (ACNW)
Shared Package
ML20151C617	List: IA-88-470, Trip Rept of 880620 Visit to State of Sc Dept of Health & Environ Control Re Silling Rept on high-density Polyethylene Integrity Containers.List of Attendees Encl ML20151C615 ML20195G256 ML20195G334 ML20195G347 ML20195G379 ML20195G402 ML20195G415 ML20195G421 ML20195G436 ML20195G455 ML20195G558 ML20195G564 ML20195G578 ML20195G582 ML20195G584 ML20195G587 ML20195G590 ML20195G601 ML20195G605 ML20195G610 ML20196K576
References
FOIA-88-470 NUDOCS 8811290005
Download: ML20195G610 (1)

Text

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27 Wildwood Drive Bedford, MA 01730 September 24,.1988 MEMORANDUM TO Mr. Mark E. Stella ACRS/ACNW Genior Fellow SUBJCCT: Report on HPDE High Integrity Containers Just a note8,to tell you how much ! appreciated your memorandum of September 1980, ,and the report on the "Estimation of 300-Year Dose to High Level Waste Disposal."

Denshty Polyethylene High Integrity Containers for Low Your n.emorandum was clear and to the point and it provided exactly thw information that I believe we were seeking. In the way of speci fic comment s, I offer the following:

1. You stated that your ,orimary attention was directed to calculations t he cont ainer .

of the energetic photon flux at the outer surface of higher?

Might the flux for the inner sur f ace have been Perhaps the di f ference would have been minimal but i f the innor sur f ace receives the higher dose, would it not be more conservative to calculate it at that point?

2. What impact (di f f erence in dose) do you estimate results from the fact that you assumed the contents in the HIC were comparable to water? In fact, what HIC container? is the density of the contents of an average

3. I found your "Additional Observations" of particular importance.

In this regard, the observation that the total dose rate "ef f ectively sets a limi t on the 300 year abcorbed dose" is very sI Dni ficant. Also signi ficant is the fact that polyethylene exhibits an inverse dose rate response to irradiation.

In summary, this was a good report. It was short and it answered my questions.

Sincerely, 0.ufwt Dade W. Moel l er , Ph.D.

Chairman, ACNW ces Dr. Savio Mr. Major 8811290005 001115 PDR FUl^

- RESN1KOga-470 PDR