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Book Transuranium Processing Plant Report of Production Status and Plans

Download or read book Transuranium Processing Plant Report of Production Status and Plans written by Oak Ridge National Laboratory. Chemical Technology Division and published by . This book was released on 1975-12-31 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Transuranium Processing Plant Report of Production Status and Plans for the Period October 1 1978 September 30 1980

Download or read book Transuranium Processing Plant Report of Production Status and Plans for the Period October 1 1978 September 30 1980 written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During this period, transuranium elements were obtained from 26 irradiated HFIT targets. The products included 86 mg of 249Bk, 686 mg of 252Cf, 3.1 mg of 253Es, and an estimated 1.4 pg of 257Fm. In addition, about 326 mg of high-purity 248 Cm was separated from previously purified 252Cf. One hundred seven product shipments were made from TRU; recipients and the amounts of nuclides shipped are listed in a table. Forty-two standard and two special HFIR targets were fabricated. During the next 18 months, production totals of 110 mg of 249 Bk, 1200 mg of 252Cf, 5.5 mg of 253Es, and 2 pg of 257Fm are anticipated. Also, a total of 225 mg of 248Cm is expected to be made available. During this report period, a charcoal adsorber system for radioiodine removal was installed, tested, and placed in service. This system serves as a backup to the Hopcalite-charcoal system for adsorption of 131I from the VOG stream. Seven 252Cf neutron sources were fabricated during this report period. A total of 100 neutron sources have been fabricated previously at TRU. The original and current contents (252Cf and 248Cm) of the existing sources and the individuals to whom the sources are currently loaned are listed in a table. In addition to neutron sources, nine fission sources were prepared by electroplating 252Cf onto platinum disks or foils. Special projects during this report period included (1) purification of two batches of isotopically pure 24°Pu, (2) fabrication of two special HFIR targets, (3) repurification of the residues of the einsteinium product from Campaign 56, (4) production of approx. 235 .mu.g of 25°Cf by irradiation of 249Bk, (5) radiography of 28 irradiated, stainless steel alloy, fracture-strain specimens, and (6) preparations for the production of 40 .mu.g of 245Es by irradiation of 253Es.

Book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending June 30 1977

Download or read book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending June 30 1977 written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During the period January 1, 1977, through June 30, 1977, the following amounts of transuranium elements were recovered from 12 irradiated HFIR targets: 0.1g 243Am, 21g 244Cm, 29.5 mg 249Bk, 288 mg 252Cf, 1.48 mg 253Es, and 0.7 pg 257Fm. One batch of high-purity 248Cm (approximately 50 mg) was separated from 252Cf. Twenty-three shipments were made from TRU during the period; recipients and the amounts of nuclides are tabulated. Five HFIR targets, each containing 8 to 9 g of curium, were fabricated. During the next 18 months, we expect to obtain totals of 92 mg of 249Bk, 910 mg of 252Cf, 3.8 mg of 253Es (in a mixture of isotopes), 615 .mu.g of high-purity 253Es, and 1.6 pg of 257Fm; we also expect to make available 250 mg of high-purity 248Cm. No process or equipment changes were made during this report period. Five neutron sources were fabricated during this report period, bringing the total fabricated to date to 97. Two sources that had previously been returned to TRU were reassigned. Special projects included the following: (1) the enrichment of the 244Pu concentration in 100 mg of plutonium by irradiation to burn out the lighter isotopes, (2) the separation of 245 pg of 254Cf from 39-hr /sup 254m/Es that was produced by irradiation of 5 .mu.g of 253Es, and (3) an experimental separation of cerium from the other rare-earth elements in a TRU process waste solution. The values that we are currently using for transuranium element decay data and for cross-section data in planning irradiation-processing cycles, calculating production forecasts, and assaying products are tabulated in the Appendix.

Book Transuranium Processing Plant Report of Production Status and Plans for the Period January 1 1978 September 30 1978

Download or read book Transuranium Processing Plant Report of Production Status and Plans for the Period January 1 1978 September 30 1978 written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During this period transuranium elements were obtained from 13 irradiated HFIR targets. The final purifications of three batches of 248Cm were completed. Forty-two product shipments were made from TRU. Six HFIR targets were fabricated; each contained approximately 2 g of 243Am and 7.5 g of cerium. The precision of the fast-neutron counting system in the TURF Californium Facility was improved sufficiently to permit assay of the 252Cf content in pellets, sources, and shipping packages. Pellets for neutron sources NSD-104 and NSD-105 were fabricated, although the encapsulations were not completed. A total of 100 neutron sources have been fabricated previously at TRU. The original and current contents (252Cf and 248Cm) of existing sources and the individuals to whom these sources are currently loaned are listed. Three used sources were returned to TRU during this report period. Five sources were reassigned and three, containing 19, 288, and 2401 .mu.g of 252Cf, respectively, are available. Special projects included (1) completing productin of several grams of ultra-high-purity 243Am, (2) final purification of 54.3 mg of high purity 244Pu, and (3) preparation of 418 pg of 254Cf from 39-hr /sup 254m/Es that was produced by irradiation of 14 .mu.g of 253Es.

Book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending June 30 1976

Download or read book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending June 30 1976 written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During the period January 1, 1976, through June 30, 1976, the following amounts of transuranium elements were recovered from ten irradiated HFIR targets: 2 g 243Am, 50 g 244Cm, 29 mg 249Bk, 277 mg 252Cf, 1.7 mg 253Es, and 0.5 pg 257Fm. About 50 mg of high-purity 248Cm was purified chemically for shipment, and another 75 mg of 248Cm was separated from 252Cf. Nineteen HFIR targets, each containing approximately 9 g of curium, were fabricated. There have been no changes during this report period in the chemical processing flowsheets normally used at TRU. Five neutron sources were fabricated, bringing the total fabricated to 84. Six sources that were used previously in various projects have been returned to TRU and are available for reassignment. Special projects included (1) the continued study of 25°Cm production by irradiation of 248Cm; (2) the production of 0.54 mg of 25°Cf by irradiation of 249Bk; (3) the separation of approximately 200 pg of 254Cf from 39-hr /sup 254m/Es that was produced by irradiation of 5 .mu.g of 253Es; and (4) the determination of process steps needed to obtain rare-earth fission products in an oxide form from LiCl-based anion exchange raffinate solution.

Book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending June 30 1975

Download or read book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending June 30 1975 written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During the period January 1, 1975, through June 30, 1975, the following amounts of transuranium elements were recovered from 22 irradiated HFIR targets: 2g 243Am, 59 g 244Cm, 51 mg 249Bk, 465 mg 252Cf, 2.5 mg 253Es, and 1.4 pg 257Fm. In addition, 45 mg of high-purity 248Cm was operated from 252Cf which had been recovered and purified during earlier periods, and 56 mg of a lower-quality 248Cm was separated from californium purification rework solutions. Five HFIR targets, each containing approximately 9 g of actinides (predominantly curium), were fabricated. A new long-term projection showed that 252Cf production in the TRU-HFIR complex could increase to as much as 2.5 g/year. During the next 18 months, we expect to recover totals of 46 mg of 249Bk, 520 mg of 252Cf, 2.0 mg of 253Es (in a mixture of isotopes), 220 .mu.g of high-purity 253Es, and 1.6 pg of 257Fm. We also expect to obtain 125 mg of high-purity 248Cm from purified californium now in storage. There are no plans to process any of the remaining SRP Pu-Al tubes or to irradiate any plutonium targets in the HFIR; thus, we do not expect to recover any 244Pu. No changes were made in the chemical processing flowsheets normally used at TRU. Two neutron sources were fabricated, bringing the total fabricated to 77. In special projects, we (1) produced about 1 mg of 25°Cf by irradiation of 249Bk in HFIR rabbits, and (2) processed some irradiated 248Cm samples and obtained yield and isotopic composition data for use in determining the capture cross section of 249Cm in the HFIR. The values that are currently being used for transuranium element decay data and for cross-section data in planning irradiation-processing cycles, calculating production forecasts, and assaying products are tabulated in the Appendix.