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Book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending December 31 1975

Download or read book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending December 31 1975 written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Between July 1, 1975, and December 31, 1975, maintenance was conducted at TRU for a period of three months, 295 g of curium oxide (enough for approximately 26 HFIR targets) were prepared, 100 mg of high-purity 248Cm, were separated from 252Cf that had been purified during earlier periods, 11 HFIR targets were fabricated, and 28 product shipments were made. No changes were made in the chemical processing flowsheets normally used at TRU during this report period. However, three equipment racks were replaced (with two new racks) during this time. In Cubicle 6, the equipment replaced was that used to decontaminate the transplutonium elements from rare earth fission products and to separate curium from the heavier elements by means of the LiCl-based anion-exchange process. In Cubicle 5, the equipment used to separate the transcurium elements by high-pressure ion exchange and to purify berkelium by batch solvent extraction was replaced. Two neutron sources were fabricated, bringing the total fabricated to 79. One source that had been used in a completed project was returned to the TRU inventory and is available for reissue. Three sources, for which no further use was foreseen, were processed to isolate and recover the ingrown 248Cm and the residual 252Cf. Eight pellets, each containing 100 .mu.g of high-purity 248Cm were prepared for irradiation in HFIR to study the production of 25°Cm. The values 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.

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 1977-06-30 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Semiannual Report of Production Status and Plans for Period Ending December 31 1976

Download or read book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending December 31 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 July 1, 1976, through December 31, 1976, transuranium elements were obtained from 11 irradiated HFIR targets; products recovered are 0.3 g 243Am, 16.6 g 244Cm, 23 g 249Bk, 211 g 252Cf, 1.15 mg 253Es, and 0.4 pg 247Fm. Two batches of high-purity 248Cm were purified chemically for shipment, and another batch containing about 62 mg of 248Cm was separated from 252Cf. Thirty shipments were made from TRU during the period; recipients and the amounts of nuclides are listed in tabular form. Nine HFIR targets, each containing 8 to 9 g of curium, were fabricated. The sequence of chemical processing steps used to purify the californium product was changed; this change yielded a shorter recovery time for high-purity 253Es, which enabled a 50% increase in the amount obtained. Eight neutron sources were fabricated during this report period, bringing the total fabricated to date to 92. Three sources that had previously been returned to TRU were reassigned; two others are also available for reassignment. The values 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.

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.

Book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending December 31 1977

Download or read book Transuranium Processing Plant Semiannual Report of Production Status and Plans for Period Ending December 31 1977 written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Transuranium elements were obtained from 13 irradiated HFIR targets. One batch of high-purity 248Cm (approximately 75 mg) was separated from 252Cf. Eighteen shipments were made from TRU during the period. Seven HFIR targets, each containing 8 to 9 g of curium, were fabricated. A new scrubber system was installed in the dissolver off-gas (DOG) stream to remove the bulk of the 131I and to reduce the amount sorbed in the Hopcalite--charcoal system. During TRU target Campaign 53, the DOG stream was scrubbed with hyperazeotropic nitric acid (the IODOX process). Both the equipment and the process performed satisfactorily. Three neutron sources were fabricated during this report period, bringing the total fabricated to date to 100. Six sources were returned to TRU and are available for reassignment. Special projects included the production of several grams of ultrahigh-purity 243Am and the development of a method for purification of the ZnBr2 solution from a shielding window. The values 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.

Book ERDA Energy Research Abstracts

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Nuclear Science Abstracts

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: NSA is a comprehensive collection of international nuclear science and technology literature for the period 1948 through 1976, pre-dating the prestigious INIS database, which began in 1970. NSA existed as a printed product (Volumes 1-33) initially, created by DOE's predecessor, the U.S. Atomic Energy Commission (AEC). NSA includes citations to scientific and technical reports from the AEC, the U.S. Energy Research and Development Administration and its contractors, plus other agencies and international organizations, universities, and industrial and research organizations. References to books, conference proceedings, papers, patents, dissertations, engineering drawings, and journal articles from worldwide sources are also included. Abstracts and full text are provided if available.