USCG Exam PracticePumps, valves, and piping systems
Under 46 CFR §56.01-10, pump characteristic curves must be submitted for pumps in the firemain and foam systems. These curves need NOT be submitted if certain data are shown on the drawing. Which of the following is NOT one of the required data items that substitutes for the curves?
- A. Rated capacity and head at rated capacity
- B. Shutoff head
- C. Head at 150 percent rated capacity
- ✓ Net positive suction head required at rated flowCorrect
Why D is correct
46 CFR §56.01-10(d)(2) lists three items that substitute for pump characteristic curves: rated capacity and head at rated capacity, shutoff head, and head at 150 percent rated capacity. Net positive suction head required is not listed as a substitute data item in that section.
Cited:46 CFR §56.01-10