ML20196B498

From kanterella
Jump to navigation Jump to search
Forwards Acceptance Review of Final Design Documents Re Umtrap in Green River,Ut.Doe Should Address Potential Particle Migration in Clogging of Riprap in Toe Protection. Addl Info Needed Re long-term Moisture Test Data
ML20196B498
Person / Time
Issue date: 12/30/1987
From: Tokar M
NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To: Fliegel M
NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
References
REF-WM-68 NUDOCS 8802110345
Download: ML20196B498 (2)


Text

.

f()lil-(of

~

DEC 3 01997 MEMORANDUM FOR: Myron Fliegel, Section Leader Operations Branch Division of Low-Level Waste Management and Decommissioning, NMSS FROM: Michael Tokar, Sectinn Leader Technical Branch Division of Low-level Waste Management and Decomissioning, NMSS

SUBJECT:

GE0 TECHNICAL REVIEW 0F FINAL DESIGN (WITHOUT FINAL RAP)

DOCUMENTS, UMTRAP, GREEN RIVER, UTAH, DECEMBER 1987.

At your request, we performed an acceptance review of the final design documents to determine what additional information is needed to conduct a complete review. DOE's response to previous NRC questions on the final design were considered in this review effort. The attachment to this memo presents our findings.

This review was performed by Banad Jagannath; please contact him should you have any questions.

cyic 1.nl SitrW4 E'I Michael Tokar, Section Leader Technical Branch Division of low-Level Waste Management and Decomissioning, NMSS

Enclosure:

As stated WM Rma rig ..

DISTRIBUTION: ' 'M ~~

(LLWM/SF JJSurmeier l- '~

NMSS r/f RJStarmer DD.: ~~

LLTB r/f SBilhorn -

BJagannath MTokar n.

,,,j - .

0FC :LLTB :LLT  :  :  :  :  :

.....:.. g _____:.... .

NAME :BJagannath :MTokar  :  :  :  :  :

DATE :l1/30/87 yk/y:/87  :  :  :  :  :

OFFICIAL RECORD COPY

??k b?]y 071230 Wr1-60 PDR

I URANIUMMILLTAILINGSREMEDIALACTIONPROJECT(UMTRAP)

GREEN RIVER, UTAH GE0 TECHNICAL ENGINEERING REVIEW OF FINAL DESIGN DOCUMENTS Review by: Banad Jagannath, LLTB Documents Reviewed: Green River Subcontract Documents and Design Calculations Vol. I, II and III, dated December 1987.

Reference:

Memo of December 15, 1987, from M. Tokar to M.Fliegel, transmitting Geotechnical engineering review comments on the Final Design Documents for UMTRAP, Green River Utah.

REVIEW COMMENTS In addition to the comments presented in the referenced memo, the following concern should be transmitted to the DOE.

1. TYP. RIPRAP TOE PROTECTION DETAIL in Drawing No. GRN-PS-10-0517, REY. B.

There is no filter layer between the Type B Riprap material and the overlying backfill material. There is a potential for the backfill material to migrate in to the voids of the riprap with time, resulting in clogging the voids of the riprap. This particle migration will also result in surficial subsidence of the backfill, which might require maintenance. The consequences of this i

potential particle migration and clogging of the riprap in the toe protection should be addressed by the 00E.

The following information is needed to perform a detailed review.

1. Radon Barrier Design- justification providing backup data for the '

long-term moisture content used in the design, and field and laboratory test data to validate the permeability parameter value used in the design.

1 i

t

).

.. , - .