ML19332D451

Forwards Request for Addl Info Re 890213 Application for Amend of License R-37.Response Requested within 90 Days of Ltr Date

ML19332D451
Person / Time
Site:	MIT Nuclear Research Reactor
Issue date:	11/27/1989
From:	Alexander Adams Office of Nuclear Reactor Regulation
To:	Bernard J MASSACHUSETTS INSTITUTE OF TECHNOLOGY, CAMBRIDGE
References
NUDOCS 8912010217
Download: ML19332D451 (4)

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i Dr.' John ' A.. Bernard L

Director of Reactor Operations j

h Nuclear Reactor Laboratory Massachusetts Institute of. Technology:

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138 Albany Street M iE Cambridge, Massachusetts 02139 J

SUBJECT:

1 REQUEST Of ADDITIOi;AL'INFORMATION We are continuing our review of the documentation submitted in support of your

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application for amendment of Operating License No. R-37 for the Massachusetts -

Institute of Technology Research Reactor that was submitted on February 13, 1909. During cer' review of your submittal, a question has arisen for which we require additional information and clarification.

Please provide a response h

to the enclosed Request for Additional Information within 90 days of the date

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of this letter. 'Following receipt of the additional information we will continue our evaluation of your amendment application.

If l questions regarding this. review, please contact me at (301)you'have any 492-1121.

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.The reporting and/or: record keeping requirements contained in this letter m

affect' fewer than ten; respondents; therefore, OMB clearance is not required-under P.'L.96-511.

Sincerely, Original signed by:

Alexander Adams, Jr.. Project Manager h20@CM0500000 17 891127 Non-Power Reactor, Decommissioning and s

P Environmental Project Directorate PN Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation b

Enclosure:

As stated cc w/ enclosure:-

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UNITED STATES.

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- WASHINGTON, D. C. 20066

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November 27,-1989 1

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Docket No.150-20' l1 N(

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. Dr.L John A. Bernari 14

~ Director of Reactor _ Operations 4

Nuclear' Reactor _ Laboratory y,

Massachusetts Institute of Technology 138 Albany Street.

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' Cambridge, Massachusetts 02139

SUBJECT:

= REQUEST 0F; ADDITIONAL INFORMATION L

We:are continuing our review of the documentation submitted in support of your application for asiendment cf Operating License No. R-37 for the Massachusetts

. Institute of Technology Research Reactor that was submitted on February 13, L

1989. - During'our review of your submittal, a question has arisen for which we H

require additional information'-and clarification. Please provide a response 1-to the enclosed Request for Additional'Information within 90 days of the date of this letter.1 Following receipt of the additional information we will continue our evaluation of your amendment. application.

If questions regarding-this review,' plea:e-contact me at (301)you have any 492-1121.

.The repor'.ing and/or~ record keeping requi'ements contained in this letter Laffect fewer than ten respondents; therefore, OMB clearance is not required

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under P. L.~96-511.

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. Sincerely,-

6" Alexander Adams, Jr. Pr ect Manager Non-Power Reactor, D 1:sioning and

. Environmental Project Directorate Division of Reactor Projects - III, IV, Y and Special Projects p

Office of Nuclear Reactor Regulation y

Enclosure:

L As stated cc w/ enclosure:

See next page s

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Massachusetts Institute of Docket No. 50-20

='E Technology cc: City Manager-City Hall

. Cambridge, Massachusetts 02139 Assistant Secretary. for Policy Executive Office of Energy Resources a

100 Cambridge Street, Room 1500 Boston, Massachusetts 0?202 Department of. Environmental Quality Engineering 100 Cambridge Street Boston, Massachusetts 02108 h

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ENCLOSURE

-l l REQUEST FOR ADDITIONAL INFORMATION l

MASSACHilSETTS INSTITUTE OF TECHNOLOGY DOCKET NO. 50-20 4

1. -

The maxt:num hypothetical accident for the Massachusetts Institute of-

--Technology _Research Reactor is the melting of four of the highest power producing fuel plates and the_ result'ng dose to the staff and public from

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1 the fission products released. Please reanalyze this accident providing calculated source term and doses to the staff and public based on your u

H requested increase in fission density limit.

Please determine if the amendment request involves a significant hazards consideration.

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Please analyze the possible effects of oxide buildup on your fuel plates _

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caused by the increased time fuel is in core to achieve.the requested j

fission density. Does the presence of fuel' cooling fin grooves cause a 1

nonuniform buildep of oxide? Address the possible effects of redi!ced l

heat transfer causcd by both uniform and, if present, nonuniform oxide buildup in normal operation and transient conditions. Please analyze the possibility and effects of oxide spallation including any changes in the temperature and the location of the hot spot. Please address the possibility and effects of cladding pitting related to oxide buildup that may be affected by the fuel cooling fin grooves. If fission products were to be released by pitting or spallation please compare the radiologic consequences to your maximum hypothetical accident.

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