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51318-11325-Laboratory Investigation of Corrosion of Type 304L Stainless Steel in Hanford Direct-Feed Low-Activity Waste Effluents

Laboratory investigation performed to evaluate the impact of key Hanford tank waste chemical constituents on corrosion of Type 304L stainless steel (UNS S30403), which is the material of construction for the site’s evaporator.

Product Number: 51318-11325-SG
Author: S. Chawla / K. Evans / B. Rollins / K. Sherer / S. Arm / J. Reynolds / K. Boomer
Publication Date: 2018
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This paper presents the results of a laboratory investigation performed to evaluate the impact of key Hanford tank waste chemical constituents on corrosion of Type 304L stainless steel (UNS S30403), which is the material of construction for the site’s evaporator. Simulated chemistries of the effluent were used to evaluate the susceptibility of the stainless steel to localized corrosion. The work is intended to improve the technical basis for establishing waste chemistry limits and controls that protects the integrity of the site evaporator system while processing tank waste and potentially effluent from the Hanford Waste Treatment and Immobilization Plant (WTP). The results of the testing indicate that the environmental conditions expected to be present in the evaporator during the processing of retrieved waste and WTP effluent are not likely to cause localized corrosion attack of UNS S30403.

 

Key words: Hanford, LAW, nuclear waste, evaporator, corrosion, 304L, stainless steel, UNS S30403

This paper presents the results of a laboratory investigation performed to evaluate the impact of key Hanford tank waste chemical constituents on corrosion of Type 304L stainless steel (UNS S30403), which is the material of construction for the site’s evaporator. Simulated chemistries of the effluent were used to evaluate the susceptibility of the stainless steel to localized corrosion. The work is intended to improve the technical basis for establishing waste chemistry limits and controls that protects the integrity of the site evaporator system while processing tank waste and potentially effluent from the Hanford Waste Treatment and Immobilization Plant (WTP). The results of the testing indicate that the environmental conditions expected to be present in the evaporator during the processing of retrieved waste and WTP effluent are not likely to cause localized corrosion attack of UNS S30403.

 

Key words: Hanford, LAW, nuclear waste, evaporator, corrosion, 304L, stainless steel, UNS S30403

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