Hi,
What is the best practice for vibration analysis technique or method to be able to detect bearing failure symptoms in slow speed conveyor belt system?
We recently had a bearing failure in one of our vertical chain conveyor system. Our route-based vibration measurement did not spot any...
Hi All,
I am currently working on pilot FMEA program for one of the critical assets in our plant. There has been a debate on the RPN minimum number, where the failure mode is defined as "high risk" and "need immediate attention" at the number of 120. Any RPN above or equal to 120 is HIGH RISK...
Hi,
I am new in the realm of alignment methodology, techniques and fundamentals. I am interested to know about these terminology:
DBFF (Distance Between Flange Faces)
DBSE (Distance Between Shaft Ends)
Bore Tolerance
Face Tolerance
Appreciate if any of you experienced alignment hands could...
Hi,
We are experiencing marginally high vibration at our FD Fan DE & NDE when the boiler load was increased from 80 T/hr to 105 T/hr. And the vibration reduced when the load is at 115 T/hr.
See below table for the measurements:
Fan DE Horiz Casing Vibration mm/sec 2 2 1.8 2 2.1 1.9
Fan DE...
Hi all,
We have a recurring problem of corrosion in our waste gas incinerator units, suspected to be due to the acid gas dew point issue.
The temperature at the bottom section of the incinerator shell showing below dew point of 126 degC (temperature reading 110 degC). Inspection was conducted...
Hi,
We recently conducted vibration data collection on of our pump system (positive displacement pump), and the vibration reading at pump side was high, while motor side was within limit.
Coupling is flex elastomeric tyre coupling.
Alignment check was done by using laser precision method. The...
Hi,
May I know, in normal operations, will the rupture disc/burst disc installed on the tank's vent line ALLOW the gas to flow through it, as long as the pressure in the line is lower or within its burst pressure, as a mean of +pressure breathing?
In this case, during re-filling of raw...
Hi,
I am interested to understand in depth on Pump's Affinity Law.
Is it possible to not change the pressure even if the pump's speed is reduced or increased? The main parameter that will change proportionally with pump's speed (RPM) is the flow rate (gpm).
However, the affinity law states...
Hi,
I am new in reliability engineering, and would like to know if there is standard such as ISO that governs the RAM analysis? Especially Availability, what is the baseline acceptable performance of Availability for an equipment or plant?
Eg, if availability is > 90% good, < 90% marginal, <...
Hi,
This post is related to the previous thread "ball valve & actuator assy in vertical orientation".
I'd like to get some inputs on a typical MTBF for a ball valve in 110 bar, 80 degC operating conditions, vertical mounted.
Thanks!
We are having issues lately with our ball valves - leaking via stem end.
The installation method for these valves and actuator are in vertical orientation (with valve's stem pointing to horizontal direction). We have yet to tear-down the valve and see the extend of the damage at the stem gland...
Hi,
We have an outdoor storage tank with chemical, equipped with N2 padding system and Desiccant Breathers at the tank's vent line.
Since the N2 padding works as barrier to prevent outside contaminants and moisture ingress into the system, appreciate if you can share your thoughts on how...
