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Category:OPERATING LICENSES-APPLIATION TO AMEND-RENEW EXISTING
MONTHYEARML20209C8901999-07-0808 July 1999 Application for Renewal of License R-37 & Increase in Reactor Power from 5000 Kw to 6000 Kw.Listed Repts Are Encl, Per NRC ML20207E4501999-05-27027 May 1999 Application for Amend to License R-37 to Change Basis of TS 3.10 as Listed.Ts Page 3-29 Included ML20217G2091997-10-0303 October 1997 Application for Amend to License R-37,permitting Operation of Subcritical Fission Converter Facility to Provide Superior Epithermal Neutron Beam for Program on Neutron Capture Therapy.Also Includes SER & Proposed TS ML20100J9711996-02-23023 February 1996 Application for Amend to License R-37 for Temporary Increase in Possession Limit for U-235 from 29 Kg to 41 Kg.Safety Review 0-96-2 Encl ML20079A0991995-02-22022 February 1995 Application for Amend to License R-37,revising Surveillance Frequency Requirement for One Cell of Emergency Battery Sys. W/Encl ML20059E3021993-10-29029 October 1993 Application for Amend to License R-37,authorizing Temporary Increase in Possession Limit for U-235 from 29 Kg to 41 Kg ML20085D7691991-10-11011 October 1991 Application for Amend to License R-37,authorizing Continuation of Temporary Increase in Possession Limit for U-235 from 29 Kg to 41 Kg Due to Continued Unavailability of Shipping Cask for Transfer of Spent Fuel Offsite ML20235K6071989-02-14014 February 1989 Application for Amend to License R-37,increasing Possession Limit for U-235 in Paragraph 2B(2) of License to 45 Kg. Related Info Encl ML20235J0621989-02-13013 February 1989 Application for Amend to License R-37,revising Tech Spec Re Fission Density Limit & Changing Percentage of Voids Permitted in UA1(x) Type Fuel ML20112J1631985-01-11011 January 1985 Application to Amend License R-37,revising Tech Specs Governing Variable Reactivity & Performance of Experiments Re Closed Loop Control of Reactor Power ML20079J9211982-12-22022 December 1982 Application to Amend License R-37,consisting of Tech Spec Changes Revising Frequencies for Surveillance Testing of ECCS & Charcoal Filters in Bldg Pressure Relief Sys & Revision 28 to SAR Revising Testing Frequency for ECCS ML19345H4171981-05-14014 May 1981 Application to Amend License R-37,changing Tech Spec 3.10 Re Fuel Element & Core Component Handling & Storage.Forwards Revision 21 to Sar,Revising Description & Analysis of Fuel Handling & Storage Facilities ML20235K6811975-09-25025 September 1975 Application for Amend to License R-37,reducing Possession Limit for U-235 to 29 Kg 1999-07-08
[Table view] Category:TEXT-LICENSE APPLICATIONS & PERMITS
MONTHYEARML20209C8901999-07-0808 July 1999 Application for Renewal of License R-37 & Increase in Reactor Power from 5000 Kw to 6000 Kw.Listed Repts Are Encl, Per NRC ML20207E4501999-05-27027 May 1999 Application for Amend to License R-37 to Change Basis of TS 3.10 as Listed.Ts Page 3-29 Included ML20217G2091997-10-0303 October 1997 Application for Amend to License R-37,permitting Operation of Subcritical Fission Converter Facility to Provide Superior Epithermal Neutron Beam for Program on Neutron Capture Therapy.Also Includes SER & Proposed TS ML20137L5741997-04-0303 April 1997 Amend 30 to License R-37,allowing Mit to Conduct boron-neutron Capture Therapy on Patients from NRC & Agreement State Medical Use Licensees Whose Licenses Contain boron-neutron Specific Conditions ML20100J9711996-02-23023 February 1996 Application for Amend to License R-37 for Temporary Increase in Possession Limit for U-235 from 29 Kg to 41 Kg.Safety Review 0-96-2 Encl ML20079A0991995-02-22022 February 1995 Application for Amend to License R-37,revising Surveillance Frequency Requirement for One Cell of Emergency Battery Sys. W/Encl ML20059E3021993-10-29029 October 1993 Application for Amend to License R-37,authorizing Temporary Increase in Possession Limit for U-235 from 29 Kg to 41 Kg ML20128P4301993-02-16016 February 1993 Amend 27 to License R-37,adding Requirements to TSs for Use of MITR-II Medical Therapy Facility Beam for Human Therapy ML20085D7691991-10-11011 October 1991 Application for Amend to License R-37,authorizing Continuation of Temporary Increase in Possession Limit for U-235 from 29 Kg to 41 Kg Due to Continued Unavailability of Shipping Cask for Transfer of Spent Fuel Offsite ML20235K6071989-02-14014 February 1989 Application for Amend to License R-37,increasing Possession Limit for U-235 in Paragraph 2B(2) of License to 45 Kg. Related Info Encl ML20235J0621989-02-13013 February 1989 Application for Amend to License R-37,revising Tech Spec Re Fission Density Limit & Changing Percentage of Voids Permitted in UA1(x) Type Fuel ML20112J1631985-01-11011 January 1985 Application to Amend License R-37,revising Tech Specs Governing Variable Reactivity & Performance of Experiments Re Closed Loop Control of Reactor Power ML20079J9211982-12-22022 December 1982 Application to Amend License R-37,consisting of Tech Spec Changes Revising Frequencies for Surveillance Testing of ECCS & Charcoal Filters in Bldg Pressure Relief Sys & Revision 28 to SAR Revising Testing Frequency for ECCS ML20054K0831982-06-11011 June 1982 Corrected Page 2 to Amend 21 to License R-37,issued 820528 ML19345H4171981-05-14014 May 1981 Application to Amend License R-37,changing Tech Spec 3.10 Re Fuel Element & Core Component Handling & Storage.Forwards Revision 21 to Sar,Revising Description & Analysis of Fuel Handling & Storage Facilities ML20235K7001975-11-17017 November 1975 Amend 11 to License R-37,reducing Quantity of U-235 to 29 Kg ML20235K6811975-09-25025 September 1975 Application for Amend to License R-37,reducing Possession Limit for U-235 to 29 Kg ML20235K6491975-07-23023 July 1975 Amend 10 to License R-37,authorizing Operation of Modified Reactor & Use of Addl 27.5 Kg U-235 1999-07-08
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MACCACHU2ETTO .
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-L (V lifilif fil 11 littlif !!!!!!!!Ill September 25, 1975 Docket No. 50-20 U.S. Nuclear Regulatory ,ommission Division of Reactor Licensing
-Attn.: Mr. George Lear, Chief Operating Reactors Branch #3 Washington, D.C. 20555
Subject:
Shh Possession Limit, License R-37 Gentlemen:
In response to Nuclear Regulatory Commission, Division of Reactor Licensing letter of August 29, 1975, Massachusetts Institute of Technology hereby submits an application to amend its Facility Operating License
[_T No. R-37.
V.
The requested amendment consists of reducing the possession limit for uranium-235 authorized in paragraph 2B(2) of the license from 45 kilograms to 29 kilograms.
The U-235 possessed and used under License R in the form of fuel elements and falls into three categories:
a) Unirradiated fuel b) Partially burned fuel c) Spent fuel.
The unirradiated fuel is purchased periodically. Because we have made only one purchase of this type of fuel in the past and because it will be necessary co find a new f abricator for future procurement, we do not have ;
significant e::perience on which to evaluate the effect of purchase quantity on '
cost. It has been our expectation that a two-year suppiv ,7 fuel elements) would be about the minimum econcaic quantity to fabrica a one batch. At 0.445 kg U-235 per element this amounts to 12 kg. U-235.
In order to remain below the " threshold" quantity defined by paragraph 73.l(b) of 10 CFR 73, it will be necessary for us to take delivery of only the numoer of elements needed fo: refuelling, plus a few more standby elements which would be n ored in an :.:ceptacle vault at the MITR. The unirradiated O
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i, ,) U.S. Nuclear Regulatory Commission September 25, 1975 Page 2 fuel stored in the vault together with other special nuclear material at the site would be kept below the " threshold" quantity. The remaining newly-purchased elements would be stored elsewhere, as is now being done with some of the elements from our last purchase.
A core loading for the reactor is normally 26 elements. In order to achieve maximum authorized burnup, a fuel management program has been developed, which calls for cycling some of the elments from the reactor to storage in the reactor pool and then back into the reactor before being discharged as spent fuel. The amount of partially burned fuel being stored for re-use varies from year to year, but it nevet exceeds 25 atandard elements plus a few special elements used for reactor physics and other tests.
Spent fuel will be discharged to a storage tank, probably in batches of 15 elements. It has been our practice in the past, for reasons of economy, to accumulate enough fuel (i.e. 56 elements) so that we could make two consecutive shipments of 28 elements each. However, the savings over making periodic single shipments were not great, and so the above amended possession limit of 29 Kg U-235 is based on the single shipment schedule. It also assumes 25% burnup in the spent fuel. When the steady state condition has been reached for the f- s
(' ) MITR-II, spent fuel shipments will be made about every second year, assuming 28 elements per load.
Because we have recently shipped all of the spent fuel from operation of the MITR-I and have on-site only 32 elements for startup of the MITR-II, our current inventory under License R-37 is only 15.1 Kg U-235. This includes 0.8 Kg U-235 in excess, unirradiated, special fuel elements for the MITR-I, which we hope to dispose of shortly. The MITR-II inventory will increase 4 Kg l or 5 Kg each year until it reaches 27 Kg in 1978. The schedule calls for 29 Kg in 1980 and then a peak of 35 Kg in 1981, followed by varying but lesser amounts thereafter.
In recponce to your letter, we are requesting a possession limit of 29 Kg U-235 at this time, since it is clear that our inventory must increase after the reactor gets back into operation. We will than re-evaluate our requirements on the basis of operating experience and subsequently request an increase above i 29 Kg if necessary. 1 Sincerely yours, kfc '
Lincoln Clark, .
Director LC/ce
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\-- xc: J.L. Cochrane D.D. Lanning MITRSC f
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