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Recorded test data are presented for Test 1011 of the isothermal portion of the Semiscale Blowdown and Emergency Core Cooling (ECC) Project. The data represent the results of a test in the isothermal test series in which a break nozzle area 80% that of other test configurations was used with no simulated ECC injection. The data, presented in the form of graphs in engineering units, have been analyzed only to the extent necessary to assure that they are reasonable and correct. Uninterpreted data from Test 1011 for use by others and for support of subsequent interpretive reports and analyses are presented. (auth)

isothermal portion of the Semiscale Blowdown and Emergency Core Cooling (ECC) Project. These data represent the results of the first tests in the isothermal test series tn which simulated ECC injection during blowdown was inveatigated. The data, presented in the form of composite graphs in engineering units, have been analyzed only to the extent necessary to assure that they are reasonable and correct. The intent of this report is to make available the uninterpreted data from Tests 1004 and 1006 for use by others and for support of subsequent interpretative reports and analyses. (auth)

Recorded test data are presented for Tests 1008 and 1010 of the isothermal portion of the Semiscale Blowdown and Emergency Core Cooling (ECC) Project. These data represent the results of the first isothermal tests utilizing an enlarged downcomer gap (1.0 inch) in the pressure vessel to investigate general system hydraulic response both with and without simulated ECC injection. The data, presented in the form of composite graphs in engineering units, have been analyzed only to the extent necessary to assume that they are reasonable and correct. (auth)

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Numerous tasks are reported that were done in assistance to the Atlantic Richfield Hanford Company in the area of process technology, and in assistance to the Hanford Plant in the areas of environmental evaluations, radiation protection, and radiation standards and engineering.

Tasks are reported that were done in assistance to the Atlantic Richfield Hanford Company in the area of process technology and development, and in assistance to the Hanford Plant in the areas of environmental evaluations, radiation protection, and radiation standards and engineering.

From meeting on fission product nuclear data; Bologna, Italy (26 Nov 1973). Applications of fission product nuclear data and data on the fission process in uranium and transuranic elements are required for radiation protection of personnel and the general population for the following situations: to determine the toxicity to exposed individuals from externally located isotopes in the environment or in the fuel cycle; to determine the toxicity caused by deposition of radioactive materials in living systems; to estimate the radiation dose to patients during medical application of injected radioisotopes for diagnostic or therapeutic means; during the use of sealed sources for implantation in living tissue (brachytherapy); during the use of sealed sources at a distance from the patient for therapeutic purposes (teletherapy); to determine the environmental pathways for uncontrolled release of radioactive materials into biosphere; and for personnel protection during the applications of radioisotopes in medicine, biology, agriculture, and industry, including gamma ray and neutron radiography. It was concluded that available nuclear data are adequate for these purposes. (CH)

An improved method for non-traumatic and essentially noninvasive evaluation of left ventricular (LV) function with /sup 99m/Tc as the tracer was developed. This method combines previously used EKG gating techniques for cardiac blood pool visualization with new computerized acquisition, processing and display techniques. An Anger camera, a small computer, and a physiological synchronizer are used to acquire a sequence of eight scintigrams which span the entire cardiac cycle. Under our present protocol two twenty-minute sequences are obtained, one an LAO (50$sup 0$) projection, the other an RAO (30$sup 0$) projection. Subsequently these images are processed on-line with a digital filter to increase definition of the cardiac borders. The eight images are then displayed sequentially on a specially designed electronic monitor to give an impression of the beating heart somewhat analogous to that obtained with invasive contrast angiography. (auth)