According to 33 CFR Part 155, to prevent the overflow of cargo tanks due to thermal expansion, to what is the maximum level that cargo tanks are allowed to be filled for topping-off purposes?
• 33 CFR Part 155 requirements for loading limitations of cargo tanks • Purpose of allowing space for thermal expansion of cargo (especially oil) • Difference between a percentage-of-volume limit and a physical measurement like inches from tank top or vent pipe
• Ask yourself: does the regulation usually give a specific percentage of tank volume or a vague physical distance like inches from the top? • Consider which option would work consistently on many different tank sizes and shapes to protect against expansion. • Think about how inspectors and crews would verify compliance during loading—what kind of limit is easiest to measure and enforce under the CFR?
• Check 33 CFR Part 155 for any reference to a numerical percentage related to maximum loading of cargo tanks. • Verify whether the regulation mentions expansion trunks specifically in relation to topping-off limits. • Confirm that the chosen option would provide enough free space for thermal expansion under worst-case temperature rise.
No comments yet
Be the first to share your thoughts!