{"id":517,"date":"2025-12-04T03:15:30","date_gmt":"2025-12-04T02:15:30","guid":{"rendered":"https:\/\/100blogs.ovh\/36\/index.php\/2025\/12\/04\/hazardous-material-summary-tables-hmsts\/"},"modified":"2026-04-27T07:57:42","modified_gmt":"2026-04-27T05:57:42","slug":"hazardous-material-summary-tables-hmsts","status":"publish","type":"post","link":"https:\/\/100blogs.ovh\/36\/index.php\/2025\/12\/04\/hazardous-material-summary-tables-hmsts\/","title":{"rendered":"Hazardous Material Summary Tables (HMSTs)"},"content":{"rendered":"
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3 min read<\/p>\n

Preparations for Next Moonwalk Simulations Underway (and Underwater)<\/h1>\n<\/div>\n<\/div>\n<\/div>\n
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A space toxicologist at NASA JSC.<\/div>\n
NASA<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n

Hazardous Materials Summary Tables (HMSTs) are a compilation of the chemical, biological, and flammability hazards of materials on a given flight or mission. HMSTs are required by Safety for all Programs, including but not limited to ISS, Commercial Crew Program (CCP), Multi Purpose Crew Vehicle (MPCV), and Gateway. Johnson Space Center (JSC) toxicologists evaluate the toxic hazard level of all liquids, gases, particles, or gels flown on or to any manned U.S. spacecraft. The biosafety hazard level and flammability levels are assigned by JSC microbiologists and materials experts and are documented in an HMST and in a computerized in-flight version of the HMST called the HazMat (Hazardous Materials) database.<\/p>\n<\/p>\n

How To Obtain Toxicological Hazard Assessments<\/h2>\n

\u201cRequirements for Submission of Data Needed for Toxicological Assessment of Chemical and Biologicals to be Flown on Manned Spacecraft\u201d<\/strong><\/p>\n