Radiochemistry During Start-Up and Early Operation of the Nuclear Ship Savannah. Final Report
Description
It was demonstrated that the radioactivity content of the primary system of the N.S. Savannah reactor plant was small and normal during the period of initial criticality and start-up, and during the sea trials and acceptance tests. The principal radioactive constituents (/sup 56/Mn, /sup 41/Ar, /sup 13/N and / sup 18/F) are either intrinsic to the primary system of the pressurized water reactor or are normally found in the coo1ant in concentrations comparable to those observed in this program. The /sup 56/Mn concentrations observed at the various reactor power levels were slightiy higher, relative to those for the other nuclides, … continued below
Physical Description
83 pages
Creation Information
Battist, L; Winnowski, W S; Dieterly, D K & Koch, R C July 1, 1962.
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Nuclear Science and Engineering Corp., Pittsburgh
Place of Publication: United States
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Description
It was demonstrated that the radioactivity content of the primary system of the N.S. Savannah reactor plant was small and normal during the period of initial criticality and start-up, and during the sea trials and acceptance tests. The principal radioactive constituents (/sup 56/Mn, /sup 41/Ar, /sup 13/N and / sup 18/F) are either intrinsic to the primary system of the pressurized water reactor or are normally found in the coo1ant in concentrations comparable to those observed in this program. The /sup 56/Mn concentrations observed at the various reactor power levels were slightiy higher, relative to those for the other nuclides, than those observed in similar reactor plants. This slightly increased concentration is attributable to the fact that the coolant of this reactor was generally maintained between pH6 and pH7, whereas the primary coolants of the other plants were maintained at somewhat higher pH values. Data for fission product concentrations in the primary coolant indicate that their only significant source is uranium contamination of the reactor core surfaces. The observed concentrations do not represent any significant hazard or potential difficulty in plant operation. The small value of 5.6 x 10/sup -2/ mu g/cm/sup 2/ for the surface density of uranium indicates that no significant contamination of these surfaces occurred during core fabrication. No significant defect in a fuel element cladding was detected during the period in which these measurements were performed. The efficiency of the demineralizer for removal of anionic and cationic radionuclides from the primary coolant was shown to exceed 90%. Volatile radionuclides were the only radioactive constituents found in the demineralizer effluent. Data obtained for the concentrations of gross radioactivity in the waste tanks were maintained below the maximum permissible concentrations for discharge to the environment. On the basis of these radiochemistry studies, it may be concluded that the N.S. Savannah primary coolant system exhibited a normal content and distribution of radionuclides and that those plant components for which radioactivity indicators or mon-itors were observed exhibited safe and normal operation behavior. (auth)
Physical Description
83 pages
Subjects
Keywords
- Accidents
- Acidity
- Anions
- Argon 41
- Cations
- Concentration
- Contamination
- Coolant Loops
- Coolants
- Criticality
- Decontamination
- Defects
- Density
- Detection
- Efficiency
- Environment
- Fabrication
- Failures
- Fission Products
- Fluorine 18
- Fuel Cans
- Fuel Elements
- Manganese 56
- Measured Values
- Nitrogen 13
- Operation
- Performance
- Power
- Power Plants
- Pressure
- Propulsion
- Quantity Ratio
- Radioactivity
- Radiochemistry
- Radioisotopes
- Reactor Core
- Reactor Technology
- Reactors
- Reprocessing
- Safety
- Savannah
- Sea
- Ships
- Startup
- Storage
- Surfaces
- Testing
- Transport
- Uranium
- Variations
- Vessels
- Volatility
- Waste Disposal
- Water Coolant
Source
- Other Information: For New York Shipbuilding Corp., Camden, N.J. Orig. Receipt Date: 31-DEC-64
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- Report No.: NSEC-72
- Grant Number: AT(30-1)-3082
- Grant Number: 529-2082
- Office of Scientific & Technical Information Report Number: 4059925
- Archival Resource Key: ark:/67531/metadc865915
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Creation Date
- July 1, 1962
Added to The UNT Digital Library
- Sept. 16, 2016, 12:32 a.m.
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- March 8, 2021, 4:26 p.m.
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Battist, L; Winnowski, W S; Dieterly, D K & Koch, R C. Radiochemistry During Start-Up and Early Operation of the Nuclear Ship Savannah. Final Report, report, July 1, 1962; United States. (https://digital.library.unt.edu/ark:/67531/metadc865915/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.