ML20138L730: Difference between revisions

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| number = ML20138L730
| number = ML20138L730
| issue date = 10/24/1985
| issue date = 10/24/1985
| title = Summary of 851022 Meeting W/Doe & Contractors in Silver Spring,Md Re Outstanding Issues on Hfir Spent Fuel Cask
| title = Summary of 851022 Meeting W/Doe & Contractors in Silver Spring,Md Re Outstanding Issues on HFIR Spent Fuel Cask
| author name = Lake W
| author name = Lake W
| author affiliation = NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
| author affiliation = NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
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=Text=
=Text=
{{#Wiki_filter:. _ _ _ _ . .    . _                      _ _  . _ . . _ _ __ .            .. _ . . _ _ _ -        __    .__
{{#Wiki_filter:.
( -6 6 O]
( -6 6 O]
1 OCT2 4 W FCTC:WHL 71-5507                                                                                               DITISU'3
1 OCT2 4 W FCTC:WHL 71-5507 DITISU'3 a, '- hiin
+
+
a, '- hiin n .y HEf10RANDUi1 FOR:             The Files FR0ti:                         Willian H. Lake, FCTC, it'SS                                                       .
n.y HEf10RANDUi1 FOR:
a                     
The Files FR0ti:
Willian H. Lake, FCTC, it'SS


==SUBJECT:==
==SUBJECT:==
                      !!EETING WITH DOE AND CONTRACTORS TO DISCUSS OUTSTANDING ISSUES ON HFIR SPENT FUEL CASK
!!EETING WITH DOE AND CONTRACTORS TO DISCUSS a
OUTSTANDING ISSUES ON HFIR SPENT FUEL CASK
]
]
The neeting was held at Silver Spring, October 22, 1985, at the request
The neeting was held at Silver Spring, October 22, 1985, at the request of DOE.
;                    of DOE.
Attendees DOE Martin !!arietta NRC Joanne Passaglia W. C. Stoddart Henry W. Lee Willian A. Pryor Kent E. ficCornack William H. Lake Purpcse The reeting was held at the request of D0E. DOE's stated intent was to gain better understanding of our questions of October 3,1985, concerning
Attendees DOE                         Martin !!arietta                       NRC Joanne Passaglia                         W. C. Stoddart                     Henry W. Lee Willian A. Pryor                           Kent E. ficCornack               William H. Lake Purpcse The reeting was held at the request of D0E. DOE's stated intent was to gain better understanding of our questions of October 3,1985, concerning
:l the HFIR cask and to explore possible resolution of those questions.
:l                     the HFIR cask and to explore possible resolution of those questions.
Sumary of Topics Containnent o
Sumary of Topics
NRC noted change in containment approach. Originally, the containment vessel provided containment; the present approach relies on the fuel clad for containment.
!                                    Containnent o     NRC noted change in containment approach. Originally, the containment vessel provided containment; the present approach relies on the fuel clad for containment.                                                       ,
o Reliance on fuel clad for containment requires a demonstration of fuel clad integrity under structural load tests.
o     Reliance on fuel clad for containment requires a demonstration of fuel clad integrity under structural load tests.
4 8510310392 851024 l
4 8510310392 851024 l                                     PDR   ADOCK 07105507 C                   PDR 07FfCE >
PDR ADOCK 07105507 C
PDR 07FfCE >
I SURNAME >
I SURNAME >
oors >
oors >
N AC FORM 318 (10-80) NRCM 0240                       OF'FICIAL. RECORD COPY
N AC FORM 318 (10-80) NRCM 0240 OF'FICIAL. RECORD COPY


i i           <
i i
The Files                                                                                                                                                                                                                                             00T2 4 35                         t I
The Files <
Structural                                                                                                                                           ,
00T2 4 35 t
i o       DOE acknowledged possible deficiencies in scale factors used in their tests. They plan to refine their work and provide additional supporting docunentation, o       DOE agreed to provide conparisonsbetween nath nodels used and available test data to confirm the validity of their models.
I Structural i
;                                o       DOE /NRC discussed the need for detail in evaluating cask vessel structure if fuel clad provides containment. It was agreed that detailed evaluation of vessel stresses are not needed for a clad-as-containment approach and that energy balance criteria would be appropriate to show vessel integrity.
o DOE acknowledged possible deficiencies in scale factors used in their tests. They plan to refine their work and provide additional supporting docunentation, o
Thernal o       NRC pointed out the difficulties associated with the nelt
DOE agreed to provide conparisonsbetween nath nodels used and available test data to confirm the validity of their models.
;                                        codel used in the SAR. That is, assuning conduction rather than convection in the melted (liquid) region nay underpredict progression of lead nelt.
o DOE /NRC discussed the need for detail in evaluating cask vessel structure if fuel clad provides containment.
o       NRC indicated that thernal protection systens fitted to older casks to prevent lead nelting typically consist of a thin steel sheet separated from the main cask body by spacers (e.g., wire wraps).
It was agreed that detailed evaluation of vessel stresses are not needed for a clad-as-containment approach and that energy balance criteria would be appropriate to show vessel integrity.
Thernal o
NRC pointed out the difficulties associated with the nelt codel used in the SAR. That is, assuning conduction rather than convection in the melted (liquid) region nay underpredict progression of lead nelt.
o NRC indicated that thernal protection systens fitted to older casks to prevent lead nelting typically consist of a thin steel sheet separated from the main cask body by spacers (e.g., wire wraps).
Orfrirmt simW by Willian H. Lake Distribution:
Orfrirmt simW by Willian H. Lake Distribution:
Docket File NRC PDR WHLake HWLee CRMarotta                                                                                                                                                       ,
Docket File NRC PDR WHLake HWLee CRMarotta DTHuang CEMacDonald GBeveridge FCTC mtg file NMSS R/F FCTC R/F b6kG),
DTHuang CEMacDonald GBeveridge FCTC mtg file NMSS R/F FCTC R/F b6kG),
\\
                  \     FCTC          ''CTC F
''CTC OFFICE >
OFFICE >                                             ''''''''''***                                *********'''                  ''*** ******'      ** ********'-    *************
FCTC F
(ggy.,g3m.. HNLee'''''''
(ggy.,g3m.. HNLee'''''''
SURNAME DATF)
SURNAME DATF)
Inne conu ais vio soi sacu o2d L . _              --    , - -              _ .
Inne conu ais vio soi sacu o2d OFFICML REORD COW L.
OFFICML REORD COW
,_ - _ _ _ _ - _. _ _._.-. _._- _ - --_._.-,_ - _ _ - _ - _ _. _ _}}
                                                        ,_ - _ _ _ _ - _ . _ _ ._.-. _ ._- _ - --_ ._ .- ,_ - _ _ - _ - _ _ . _ _}}

Latest revision as of 18:49, 11 December 2024

Summary of 851022 Meeting W/Doe & Contractors in Silver Spring,Md Re Outstanding Issues on HFIR Spent Fuel Cask
ML20138L730
Person / Time
Site: 07105507
Issue date: 10/24/1985
From: Lake W
NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To:
NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
References
NUDOCS 8510310392
Download: ML20138L730 (2)
v • d • e


Text

.

( -6 6 O]

1 OCT2 4 W FCTC:WHL 71-5507 DITISU'3 a, '- hiin

+

n.y HEf10RANDUi1 FOR:

The Files FR0ti:

Willian H. Lake, FCTC, it'SS

SUBJECT:

!!EETING WITH DOE AND CONTRACTORS TO DISCUSS a

OUTSTANDING ISSUES ON HFIR SPENT FUEL CASK

]

The neeting was held at Silver Spring, October 22, 1985, at the request of DOE.

Attendees DOE Martin !!arietta NRC Joanne Passaglia W. C. Stoddart Henry W. Lee Willian A. Pryor Kent E. ficCornack William H. Lake Purpcse The reeting was held at the request of D0E. DOE's stated intent was to gain better understanding of our questions of October 3,1985, concerning

l the HFIR cask and to explore possible resolution of those questions.

Sumary of Topics Containnent o

NRC noted change in containment approach. Originally, the containment vessel provided containment; the present approach relies on the fuel clad for containment.

o Reliance on fuel clad for containment requires a demonstration of fuel clad integrity under structural load tests.

4 8510310392 851024 l

PDR ADOCK 07105507 C

PDR 07FfCE >

I SURNAME >

oors >

N AC FORM 318 (10-80) NRCM 0240 OF'FICIAL. RECORD COPY

i i

The Files <

00T2 4 35 t

I Structural i

o DOE acknowledged possible deficiencies in scale factors used in their tests. They plan to refine their work and provide additional supporting docunentation, o

DOE agreed to provide conparisonsbetween nath nodels used and available test data to confirm the validity of their models.

o DOE /NRC discussed the need for detail in evaluating cask vessel structure if fuel clad provides containment.

It was agreed that detailed evaluation of vessel stresses are not needed for a clad-as-containment approach and that energy balance criteria would be appropriate to show vessel integrity.

Thernal o

NRC pointed out the difficulties associated with the nelt codel used in the SAR. That is, assuning conduction rather than convection in the melted (liquid) region nay underpredict progression of lead nelt.

o NRC indicated that thernal protection systens fitted to older casks to prevent lead nelting typically consist of a thin steel sheet separated from the main cask body by spacers (e.g., wire wraps).

Orfrirmt simW by Willian H. Lake Distribution:

Docket File NRC PDR WHLake HWLee CRMarotta DTHuang CEMacDonald GBeveridge FCTC mtg file NMSS R/F FCTC R/F b6kG),

\\

CTC OFFICE >

FCTC F

(ggy.,g3m.. HNLee''

SURNAME DATF)

Inne conu ais vio soi sacu o2d OFFICML REORD COW L.

,_ - _ _ _ _ - _. _ _._.-. _._- _ - --_._.-,_ - _ _ - _ - _ _. _ _

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