10 replies to this topic

[betty]

could any body explain for me the meaning of: risk analysis for starting up and shutting down the pumps.

also:

what's the meaning of: explination matually affecting pumps.

..best regards..

[Qalander (Chem)]

For Item (1)
A general concept is to List down all the possible parameters changing/to be changed whenever any pump is started -up or shut-down.

This should mainly include process related conditions of pressure, temperature,flow and levels etc.

However the prime mover related items do form a secodary part of list as the drive's current(amperage) load if electric motor or steam/air pressure load if turbo driven by steam or air etc.)

For Item(2) there are two or three possiblities in general;

Pumps having common dischage and suction headers to mutually affect one another's operation if first already in service.

Pumps having common discharge header or common suction header do affect each other's operation similar to first case.

Pumps having one pump's discharge going directly into other one's suction(sort of Booster operation)severly affect impact on one another's operation and extreme care and vigilance needed throughout operation.
Hope this helps
regards
qalander

[betty]

I undrestood the item (2) but the first item (1) I did not get it!!!

I'll give you my tries :


In risk analysis is the possibility of risk and their severity and here is an example for Pumps Risk Analysis:

RISK ANALYSIS

• DRY RUNNING
  
• OVER PRESSURE
  
• HARD PARTICLES
  
• CAVITATION DAMAGE
  
• WEAR PARTS
  
• TECHNICAL
  KNOWLEDGE

[Qalander (Chem)]

Dear Betty

I have my own reservation basically relating with/limited to your OP 'Starting-up' and 'Shutting-down' aspects relating to operation alone
howevere your item details may come in as well.
Best regards
Qalander

[betty]

Dear Betty

I have my own reservation basically relating with/limited to your OP 'Starting-up' and 'Shutting-down' aspects relating to operation alone
howevere your item details may come in as well.
Best regards
Qalander

so. my item details are right or they are in general..??

[Qalander (Chem)]

Dear
Somehow I will not consider these directly related to the 'Start-up' and/or 'shut-down' activities but more linked to overall sustained operation;I hope you realize this.

Many of our learned forum friends/colleagues may further enlighten on the subject.

Best regards/Good Evening cum Night
Qalander

[betty]

Not yet I get it..


thanks dear,

Best regards/

[betty]

If there is risk analysis of starting up and shtting dwon of pump for apump so what about human risk analysis starting up and shtting dwon???

[Qalander (Chem)]

Dear betty please kindly do Refer back to your OP
which does not imply/indicate this.
However if we keep expanding it is in a way limitless and thus may go out of optimum rationale.
best regards
qalander

[betty]

ok dear thankyou very much on your replays!!!!!!!!!!

[betty]

For Item(2) there are two or three possiblities in general;

Pumps having common dischage and suction headers to mutually affect one another's operation if first already in service.

Pumps having common discharge header or common suction header do affect each other's operation similar to first case.

Pumps having one pump's discharge going directly into other one's suction(sort of Booster operation)severly affect impact on one another's operation and extreme care and vigilance needed throughout operation.
Hope this helps
regards
qalander

how are you again??

Could any body explain Item(2) more because I've confused.

Does affecting pump relate to suction and discharge headers only....??

thanks