Hearing on National Defense Authorization Act for Fiscal Year 1991--H.R. 4739, and Oversight of Previously Authorized Programs, Before the Committee on Armed Services, House of Representatives, One Hundred First Congress, Second Session: Department of Energy Defense Nuclear Facilities Panel Hearing on Naval Nuclear Propulsion ProgramU.S. Government Printing Office, 1990 - 157 lappuses |
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Admiral DEMARS airborne radioactivity associated with Naval cancer cobalt 60 Commission on Radiological CONGRE CONGRESS THE LIBRARY curie Deleted Department of Energy detected dosimeters environment ENVIRONMENTAL MONITORING LOCATIONS Environmental Protection Agency Federal gamma HANSEN internal radioactivity International Commission Ionizing Radiation less leukemia LIBRA LIBRARY OF CONGRESS limit Liquid Releases low-level natural background Naval Nuclear Propulsion Naval nuclear-powered ships Navy nuclear power nuclear propulsion plants Nuclear Propulsion Program Nuclear Regulatory Commission occupational exposure occupational radiation exposure operations overhaul personnel monitored personnel radiation exposure Portsmouth Naval Shipyard procedures Protection Agency Report Protection and Measurements radiation exposure radiation exposure received Radiation Protection radioactive contamination radioactive material radioactive waste radioactivity released Radiological Protection radionuclides RARY reactor compartment reactor coolant reactor plant risk estimates SEDIMENT SAMPLE POINT shipments SPRATT support facilities TABLE tritium U. S. Environmental Protection U. S. Naval nuclear-powered U. S. Nuclear Regulatory WATER SAMPLE POINT workers
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38. lappuse - TLD's and TLD readers in use at program activities. Precision TLD's are pre-exposed to exact amounts of radiation by the National Institute of Standards and Technology, formerly the National Bureau of Standards, and provided to program activities for reading.
97. lappuse - As a result, the radioactivity concentration guide for carbon 14 in its chemical form in air issued by the International Commission on Radiological Protection, the National Council on Radiation Protection and Measurements, the US Nuclear Regulatory Commission and by other standard-setting organizations is three thousand times higher than for cobalt 60.
93. lappuse - This total is for releases from US Naval nuclear-powered ships and from the supporting shipyards, tenders and submarine bases, and at operating bases and home ports in the US and overseas and all other US and foreign ports 'which were visited by Naval nuclearpowered ships.
125. lappuse - Naval nuclear-powered ships and support facilities have not caused a measurable increase in the general background radioactivity of the environment. 4. Low-level cobalt 60 radioactivity in harbor bottom sediment is detectable around a few...
96. lappuse - Although tritium has a l2 year half-life, the radiation produced is of such low energy that the radioactivity concentration guide issued by the International Commission on Radiological Protection, the National Council on Radiation Protection and Measurements, the US Nuclear Regulatory Commission and by other standard-setting organizations is one hundred times higher for tritium than for cobalt 60. This tritium is in the oxide form and...
96. lappuse - ... from US Naval nuclear-powered ships and their support facilities has been less than 0.001 curie per year for all harbors combined. Fallout of these same fission products has often been more than this in one rainfall in a single harbor.
59. lappuse - In progress inside an area such as a reactor compartment. Airborne radioactivity surveys are required to be performed regularly in radioactive work areas. Any time airborne radioactivity above the limit Is detected in occupied areas, work which might be causing airborne radioactivity is stopped. This conservative action is taken to minimize internal radioactivity even though the Navy's airborne radioactivity limit would allow continuous breathing for forty hours per week throughout the year to reach...
64. lappuse - Council stated in ref 4 that its radiation protection guidance did not differ substantially from recommendations of the National Committee on Radiation Protection and Measurements, the International Commission on Radiological Protection, and the National Academy of Sciences.
36. lappuse - Tenders for nuclear -powered submarines and surface ships are designed so that radioactive material is handled only in specially designed and shielded nuclear support facilities. Submarine bases and shipyards limit to the minimum, the number of places where radioactive material is allowed.