In an attempt to quantify the difference in vibration levels, eight new API 7th edition pumps were installed using epoxy grout and eight new pumps were installed using cementitious grout. Figures 7 and 8 show the distribution of the vibration readings taken on the 16 pumps. As repair intervals increase, problems can arise due to the centrifuging of the coupling lubricant. No coupling lubrication program has been initiated at the site. Instead, all grease couplings are re-lubricated whenever a pump is repaired.
Vibration analysis is used to monitor the condition of the coupling between repairs.
If a lubricated coupling becomes worn, it is replaced with a non-lubricated coupling. Handling Vapor in the Seal Chamber Ensuring that the seal chamber is always filled with product is key to obtaining maximum seal life. However, there are numerous sources of seal chamber vapor requiring different types of control. The effects of vapor in the seal chamber usually do not cause an immediate failure. The interaction between the amount of vapor, the time interval that vapor is present, the number of times that vapor is present, and the fluid properties determine the ultimate reduction of seal life.