Question 1029 Deck General

70% to pass

You are on an inerted tankship. A low pressure alarm must be set to cause an audible and visual alarm if the pressure in the tanks cannot be maintained at more than _______________.

A 4" water gauge
B 90% of the vacuum assist fan
C 90% of the pressure drop through the scrubber
D 90% of the vacuum relief setting
AI Explanation

The correct answer is A) 4" water gauge. On an inerted tankship, the low pressure alarm must be set to cause an audible and visual alarm if the pressure in the tanks cannot be maintained at more than 4" water gauge. This requirement is specified in 46 CFR 154.1325(b), which states that the low pressure alarm must be set to activate if the pressure in the tanks falls below 4" water gauge. The other options are incorrect because they do not match the regulatory requirement for the low pressure alarm setting on an inerted tankship. Options B, C, and D refer to percentages of other system settings, which are not the correct criteria for the low pressure alarm.

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