Dear colleagues
Plant safety regulations require the de-energizing of system when working on it including pneumatic valves. a recommendation was made to introduce lockable isolating valves in the system but the requirement has been specified to lock the actual process valve. there are hundreds...
Good day fellow engineers
set-up shown in image below has blockage challenges at the eductor area (actually at pipe attached after eductor). my suspicions are that ring spray water is not adequate enough to wash down the settled lime powder on the hopper, but i dont know the calculations to...
Good day fellow engineers
I have a centrifugal pump used to pump brine (salt solution) for water treatment process. there is evident corrosion on the pump casing which is of cast iron/steel material (see attached image). my question is what is the right pump components' material to use for...
i have noticed on most,if not all, situations that there is a reducer pipe installed immediately after centrifugal pump discharge to increase the diameter of the discharge pipe. why?
Dear Engineers
May you please assist me with the following ballpark values for a demin water plant for a 40MW methane gas-fired power generation plant:
1. size (water flow rate)?
2. cost of constructing the demin plant?
regards
Dear Engineers
May you please assist me with the following ballpark values for a demin water plant for a 40MW methane gas-fired power generation plant:
1. size (water flow rate)?
2. cost of constructing the demin plant?
regards
motor rating: power=32kW, FLC=63A, Voltage=380V
before rewind: winding resistance=7.9ohms, line current=55A, phase current=31.8A
after rewind: winding resistance=9.1ohms, line current=84A, phase current=45A
after rewinding, the motor is drawing 33% more than the rated current but monitored it...
our mill gearboxes are cooled by a circulating oil cooling system comprising of pump, filter, cooler and gearbox. there are differences in component sizes on different which can be combined in 3 sets of systems, A, B & C as follows:
pump A = Pump B = pump C
filter A = filter B = filter C
gearbox...
the governor valve controlled by the vickers proportional directional valve with feedback was closing on its own. the controller opened it to the required position and it closed again causing the unit to trip.
at first the module was changed and the problem re-occured then the proportional...
i am doing incident investigations on old trips and one of my bottlenecks is lack of information...
attached is a trend of what happened. the right hand (RH) air flow measurement shoots up without any increase in load or vane position. this led to a chain of reaction shown on the trends until...
i would like assistance on how to design a governor valve positioner link/stud suitable to withstand the up & down system vibrations of 19.1mm/s as shown in the attachment. the positioner link stud shown in the attachment has fractured 3 times in the past year. when it fractured the second time...
governor valve positioner link stud fractured at the point where the link is joined to the governor actuator. i measured the vertical vibrations on the position shown on the picture attached on different units (units 6 & 7) because they have the same valve design and unit capacity. on unit 6...
fellow engineers,
i have a charge car with trailing cables getting damaged as the charge car moves (refer to pictures). the initial design to was hangers where the cable was supported during operation but when we started a coke oven battery rebuild project the hangers were removed thus the...
i also posted this in the boiler section but i just wanted to get the materials experts point of view:
i have a 200psi locomotive boiler with water level gauge glasses breaking every 2-3weeks. i am new to the section (3months) and apparently this problem is a new phenomenon which just started...
i have a 200psi locomotive boiler with water level gauge glasses breaking every 2-3weeks. i am new to the section (3months) and apparently this problem is a new phenomenon which just started about 6-8mnths back. the problem started when there was a new supplier of these glasses. we have reverted...
vibrating screen motor rotor fractured at bearing journal shoulder (rotor side). set-up of the system installation is shown in one of the pics. motor is mounted on a rigid frame that is mounted to the ground while driving a vibrator through v-belts. my initial assessment is that during...
attached is a coupling and shaft layout. the coupling with initial ID of 80mm was bored out to 100mm to suit the shaft diameter of 100mm. the shaft was inserted into the coupling up to 140mm to allow for sprocket alignment at the other end of the shaft. my question is: is there a standard...
voith recommends ISO VG 32 oils in their fluid couplings but we are using ISO 68 oils on all our fluid couplings. Ive tried to ask around why with no success but it seems that has been the status quo ever since. we are operating them in high temperature, 35deg celcius average ambient temperature...
i have a chain driven staker conveyor to move 50kg fertiliser bags up a 35deg incline. This system is now old and now causing frequent chain breakage breakdowns. I want to convert the staker conveyor into a belt conveyor using reclaimed belts from coal plant so as to eliminate these constant...
i have two 250kw motors driving 1conveyor bt installed on different pulleys. One is drawing 200amps and the other around 90amps. Full load current is 325amps for both motors. I am concerned that only one is working and might end up failing prematurely. Is it normal or should be rectified
