What indications would you use to determine...

What indications would you use to determine...

Question 1 of 270705eccef9bbacbc34ba4d454f6

What indications would you use to determine that a pump overhaul was necessary for a salt water service centrifugal pump assuming normal salt water supply conditions?

Question 1 of 27070

Q

What indications would you use to determine that a pump overhaul was necessary for a salt water service centrifugal pump assuming normal salt water supply conditions?

🔍 Key Concepts

• Centrifugal pump performance indicators such as shutoff head pressure, flow rate, and speed • Differences between mechanical problems (coupling, bearings) and hydraulic performance problems (head, capacity) • What condition specifically signals that the pump is no longer delivering its designed hydraulic performance

💭 Think About

• Which option(s) describe a change in the pump’s ability to move water (head/capacity) rather than just a mechanical nuisance? • For a centrifugal pump on salt water service, what would impeller wear or erosion show up as in routine readings? • Does constant coupling maintenance by itself prove that the hydraulic performance of the pump has degraded enough to require overhaul?

✅ Before You Answer

• Review what shutoff head pressure represents on a centrifugal pump and how it’s used as a performance benchmark. • Consider whether a change in shaft speed is a normal result of wear inside a centrifugal pump, or usually caused by another source (like the driver). • Decide which indication directly shows loss of pump hydraulic efficiency, rather than just increased maintenance needs.