HB-Line Dissolver Dilution Flows and Dissolution Capability with Dissolver Charge Chute Cover Off

Hallman, D.F.

Savannah River Site (S.C.)

关键词: Blowers;    Flammability;    08 Hydrogen;    Scrap;    Dissolver;   

DOI  :  10.2172/835531
RP-ID  :  WSRC-TR-2003-00029
RP-ID  :  AC09-96SR18500
RP-ID  :  835531

美国|英语

来源: UNT Digital Library

【 摘 要 】

A flow test was performed in Scrap Recovery of HB-Line to document the flow available for hydrogen dilution in the dissolvers when the charge chute covers are removed. Air flow through the dissolver charge chutes, with the covers off, was measured. A conservative estimate of experimental uncertainty was subtracted from the results. After subtraction, the test showed that there is 20 cubic feet per minute (cfm) air flow through the dissolvers during dissolution with a glovebox exhaust fan operating, even with the scrubber not operating. This test also showed there is 6.6 cfm air flow through the dissolvers, after subtraction of experimental uncertainty if the scrubber and the glovebox exhaust fans are not operating. Three H-Canyon exhaust fans provide sufficient motive force to give this 6.6 cfm flow. Material charged to the dissolver will be limited to chemical hydrogen generation rates that will be greater than or equal to 25 percent of the Lower Flammability Limit (LFL) during normal operations. The H-Canyon fans will maintain hydrogen below LFL if electrical power is lost. No modifications are needed in HB-Line Scrap Recovery to ensure hydrogen is maintained less that LFL if the scrubber and glovebox exhaust fans are not operating.