摘要:

An investigation was performed on possible penetration of sodium into Type-304L stainless-steel grain boundaries when the steel was exposed to the liquid metal at 1200°F. The method used consisted of progressive penetration with a laser through sodium-filled thin wall stainless-steel tubes ~0.0005 in. at a time. Simultaneous recording of the emission spectrum of each sample on photographic film resulted in the production of a comparative record which was analyzed for the intensity of the sodium 5890 and 5895.5Ådoublet. Entry into a sodium-rich region was attended with intensification of the sodium lines. Results with a series of tubes exposed to sodium at 1200°F up to 1425 h and compared with a control sample not treated at 1200°F did not show any evidence of sodium penetration through Type-304L stainless steel.

ISSN:0550-3043    

DOI:10.13182/NT69-A28391

出版商:Taylor&Francis    

年代:1969

数据来源: Taylor

摘要:

The stack effluent of a nuclear fuel reprocessing plant would be expected to contain sufficient tritium to serve as a radioactive tracer for the plume. In order to make use of this built-in tracer, a silica gel sampler for tritiated moisture was developed, which permits large scale sampling.An intensive study of the area surraunding Nuclear Fuel Services, Inc. was undertaken during the summer of 1967 to determine experimentally the maximum concentration (Cmax) of the stack effluent using tritiated moisture as the tracer. Sampling legs that radiated from the stack were established. During a two-month period>700 samples were collected on 7 sampling legs.The average tritium radioactivity on the sampling leg northwest of the plant (leg G) exceeded 1000 tritium units (TU) 71% of the time for the 28 sampling periods studied. In 11 of 28 cases a maximum concentration of>3000 TU occurred. It was definitely demonstrated that a Cmaxcan be determined by tracing with tritiated moisture.Based on experimental Cmaxvalues, an estimate of the emission rate, Q, was made under various meteorological conditions. The possibility of a secondary saurce of tritiated moisture influencing measurement of stack-emitted tritium was considered.

ISSN:0550-3043    

DOI:10.13182/NT69-A28392

出版商:Taylor&Francis    

年代:1969

数据来源: Taylor