Total hydrocarbon content (THC) testing in liquid oxygen (LOX) systems

[摘要] The measured Total Hydrocarbon Content (THC) levels in liquid oxygen (LOX) systems at Stennis Space Center (SSC) have shown wide variations. Examples of these variations include the following: 1) differences between vendor-supplied THC values and those obtained using standard SSC analysis procedures; and 2) increasing THC values over time at an active SSC test stand in both storage and run vessels. A detailed analysis of LOX sampling techniques, analytical instrumentation, and sampling procedures will be presented. Additional data obtained on LOX system operations and LOX delivery trailer THC values during the past 12-24 months will also be discussed. Field test results showing THC levels and the distribution of the THC's in the test stand run tank, modified for THC analysis via dip tubes, will be presented.

[发布机构] Vencore ESC, Cryogenics Test Laboratory, KSC, FL; 32899, United States^1;NASA Stennis Space Center, MS; 39529, United States^2;NASA Kennedy Space Center, KSC, FL; 32899, United States^3

[效力级别] 物理学 [学科分类] 材料科学（综合）

[关键词] Additional datum;Analytical Instrumentation;Liquid oxygen;Sampling procedures;Sampling technique;Space centers;System operation;Total hydrocarbon contents