API MPMS CH 23.2

Description

Provide methodologies and processes to monitor liquid tank car movements’ quantity loss/gain (L/G) ratios, level, and/or quality differences for tank car measurement systems. This document does not establish an industry standard for L/G ratios or level, but under normal operating conditions the standard will assist the user to identify L/G of any tank car system. It will assist to determine: — ratio or level deviations, — patterns or trends, — liquid quality. This document will also make available operational and statistically based tools to: — identify when a system exhibits a deviation from its normal operating conditions, — guidelines for identifying the causes of the deviation from its normal operating perimeters.