There is no problem to fix it as OEM A but I am interested in the cause of failure. This is the analysis i am doing right now. We have taken the project to find out the possible cause of balance disk failure. There are only three changes as I inderstood.
1. The second OEM reduced the A gap to...
No feedback from the manufacturer. Actually original OEM was differnt and then later the design ( 8 to 9 diffuser vane) revised by different manufacturer. It is a 5 satge pump & 1st stage is a double suction impeller. In the 5th stage the A gap (with 8 vane ) was .070 inch. After modification...
The purpose is to identify the cause of the failures and make corrective repairs. The pumps have been in service since the late 1970's and have exhibited high vibrationa at vane pass frequency but operated with normal maintenance without failure for approx 10 years at a time. Since 2003, five of...
