ML20195G402
| ML20195G402 | |
| Person / Time | |
|---|---|
| Issue date: | 09/08/1987 |
| From: | Maupin C NRC |
| To: | NRC |
| Shared Package | |
| ML20151C617 | List:
|
| References | |
| FOIA-88-470 NUDOCS 8811230368 | |
| Download: ML20195G402 (2) | |
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September G,1987 Memorandum For: TOPICAL REPORTS FILE l
FROM: Cardelia Maupin i
SUBJECT:
CONFERENCE CALL WITH THE THREE SITED STATES CONCERN *NG
! DITUMEN WASTE FORM, FOLYETHYLENC H1CS AND CEMENT I SOLDIFICATION l
At the requent of LLWM, a conforcnce cell wac hold on August 17, 1 H17 at l 1 OOpm CLT. The purpcuo cf the conference call was to shere concerns er. thc
{ top i t ol r eports desl ang with polyethylene high i t.t eg r i t y centtinu s, cumant t
ccitGAf.cetton and b.tumen Waute fcrc, w".tch ero2e ir ca Elk studios .nd to catain the threu LLW sited statcc recponne to this i r. f c r n.c ', t a n ,
f The attendees at the conference call were as follows:
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! Jchn Greeves, LLWM 4
John Surmier, LLWM
! Mike lot;ar, LLWM i Virgil Autry, South Carolina ERC l
Huywar d Enuel y, South Cteclar.a URL l
Earl Ingersoll, Washington CRP
. Robert Lod , Reyion IV REAR
} Richarc Woodruff, Regien II R54R J ack Hor nor , Region V RCAR Carde11a Meuptn, CLITP hathleen N. Echnoider, SoITP Stanley Marsht11, Nevada RH3 The n eeting begen with Mike Tokar presenting an overview of coment g solidification processes. He began by stating that a DTP on waste fore, wee
- d;veloped back in 1983 and it was later used in the develope.cnt of ths i Ragulatory Guide on Waste Stability. Thusu documents were developed tu l L tline testing requirements on waste f orm stability. In light of the I clandards sut in these documents, concerns arose regarding tnc effect of t t ir.L
{ cnd water en.ergunce on various types of cement solidification pr ocesses. This Acad to the contracting of LNL to do an analysis of the effect of cure conditions on the stability of cem:nt waste forms after immersion in water.
The LNL report noted that cracking and spalling occurred in the cement waste f or ms as a result of excessive loading. These results have lead tc LLWM decisica to estabitch an upper boundary on the amount of loading the coment waste form can with stand. In the interini, tcpical repc.rts icr cec.cnt west.
iorm will be providad a conditional appreval with a upper limit of 1E!
l loadings however, the vendor must Ltill submi t a prcprietar y repor t which I illustrates that its cement waste icem can mot the 18% limit. In addttaen, l if a vendor desires a loading limit greater than 18%, he c:uct juctif y t.is rcquest for a hicher limit. IY 8811230360 001115 PDR FOIA RESNIKOOS-470 PDR (lT
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3 BTATE RESPONSE: Questions arose concerning whether or not NRC could assure that the State will not have problems with what is currently buriud in the cites . The NRC could not assure them that they would not have any problems, but responsed by stating that their is a need to establish critoria f or- a prudent regulatory posture on waste form. The States believe that we should proceed with such a position.
1 After the discussion on cement solidification was completed, Tokar made a brief presentation on the BNL report on polyethylene HIC's. BNL developed an onalytical model on polyethylene HIC's to be used to analyze its structural behavior and to develop failure criteria for the HIC. The recults of this cnalysis indicate that ther e are pr oblems in three (C) areas concerning the container. These areas are (1) creep 3 (0) buckling and (3) allowable msmbrane stress values. Buckling was stated to show a lack of structural otablilty. Creep is believed to lead to container fatlure and allowable .
membrane stress on the cohtainer may be exceed also.
In view of the above, LLWM would like to sond a copy of thic report to polyethylene HIC vendors and would I t ke them to demonstrate that their H1C con with wtand the BNL tests.
States Response South Carolina stated that a similar report on thu f ailuru or these typo HIC's was developed by NUS and wac sont to the vundorc. Analysis of the report by thu vendors showed that the NUS report was not valid. A ccp) of thi s report will be f orwar ded to LLWM for their comment.
' South Carolina desired to know what should they do in regards to the continuec use of the polyethylene HIC at their site. LLWM responded oy stating that they will sent this inf or mation to the vendcrs and give them C months to demonstr ate compliance with the EN report and C months citer the duadline f or the vendors tu respond, LLWM will make an offical decicion en thu use of thk HIC. In the interim, South Carolina will continue to accept ths pclyethy!cne HIC at its site.
Marshall rebponded that he was gled this inf orn,ation 'wes br ought to light since he wac in the peccces of approving the HIC f or the Buatty sito.
The States seemed to approve of putting the burden of proof for the ucc cf these containers back on the vendors.
The final presentation by Tokar was made on the bitumen waste form. Ho that that bitumen could not moot the stability requirements in the BTP on waste form. Therefore, it was suggested that backfill techniques be used in Itcu of its compression strength. Tekar concluded that the vendors must demonstrated that the bitumen waste f orm can met a minimal compression strength which is tc be established.
STATES RESPONSE: The states seemed to accept thts approach.
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