This practice provides design, construction, and installation criteria for platforms in cargo tanks. Where platforms are attached to ladders see Figs. 1-4. The values stated in SI (metric) units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.