The following data will be required for sizing and selecting a right pump
S > Size of pump , liters per minute or cubic meter hour(m3/hr )
T >Total Head in the system , including NPSH available
A > Application
* feed water, dosing ,transfer, mixing etc
M > Media ~name of fluid or media to be pumped
Viscosity ,SG , Temperature ,solid content ,PH etc
* these will more or less ,help us determine the type of pump to offer
* and also the material of pump construction
P > Power . the driver of pump
* electric motor .air driven or engine driven , maybe steam driven
S > Shaft sealing . mechanical seal or gland packing
* type and material of mechanical seal/packing
* require seal flush or quenching ?
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24.5.08
SPECIFYING A REQUIREMENT
There are times where you would need extra features other than the standard features provided
by the manufacturer. It is unfair to supplier, that customer complains that I want this and not that
after the item is delivered ,As an example , we highlight the case of an electric motor
a) Protection : IP 54 or IP 55 is usually the standard protection.
b ) Insulation : Generally Class F .there are special class for furnance application.as working enviroment is of higher temperature
c) terminal box : for bigger motors of 300 kw .you may need bigger termination to suit to your cable size , do check your cable size before ordering
Or you may ask for special terminal box cover
Or location of the terminal box, left ,right or top
d) bearings : for big pulley diameter application and belt driven, and because of the big pulley is used is heavy ,you may need upgraded bearing to handle to overhung load
Or the installation of the motor does not facilitate easy greasing or maintenance work .you may opt for life lubricated bearings
Most of the cases, Engineers do not take note of these details
So far .we only come across one Engineer from the Fibreboard industry who knows exactly
his requirement .
by the manufacturer. It is unfair to supplier, that customer complains that I want this and not that
after the item is delivered ,As an example , we highlight the case of an electric motor
a) Protection : IP 54 or IP 55 is usually the standard protection.
b ) Insulation : Generally Class F .there are special class for furnance application.as working enviroment is of higher temperature
c) terminal box : for bigger motors of 300 kw .you may need bigger termination to suit to your cable size , do check your cable size before ordering
Or you may ask for special terminal box cover
Or location of the terminal box, left ,right or top
d) bearings : for big pulley diameter application and belt driven, and because of the big pulley is used is heavy ,you may need upgraded bearing to handle to overhung load
Or the installation of the motor does not facilitate easy greasing or maintenance work .you may opt for life lubricated bearings
Most of the cases, Engineers do not take note of these details
So far .we only come across one Engineer from the Fibreboard industry who knows exactly
his requirement .
18.5.08
Participation & Informations Sharing
So far,the participation in this forum has been extremely low
Engineers or Maintenance Executives are welcome to post your comments or highlight any technical
subjects on pumps and blowers
Any unusual experience in day to day opeartion of pumps and how you had overcame the problem will serve as useful informations for all of us in the industry
There is case of Vacuum pump failure due to cavitation .The problems was there and has been recurring
for a long time before one of the Experienced Engineer who join the Company decided to take a closer look
at the problem .He has identified the cuases and got it rectified.The equipment is going to perform well
for a long time
And great ,this guy simply do it on his own with some trouble shooting guide from Pump Manufacturer
Others would have been blaming the pump supplier for the failure and wants the pump supplier to
rectify the problem
Engineers should take a pro-active stance in learning.trouble shooting and problem solving
Most of the skills are acquired through practical experience .
Engineers or Maintenance Executives are welcome to post your comments or highlight any technical
subjects on pumps and blowers
Any unusual experience in day to day opeartion of pumps and how you had overcame the problem will serve as useful informations for all of us in the industry
There is case of Vacuum pump failure due to cavitation .The problems was there and has been recurring
for a long time before one of the Experienced Engineer who join the Company decided to take a closer look
at the problem .He has identified the cuases and got it rectified.The equipment is going to perform well
for a long time
And great ,this guy simply do it on his own with some trouble shooting guide from Pump Manufacturer
Others would have been blaming the pump supplier for the failure and wants the pump supplier to
rectify the problem
Engineers should take a pro-active stance in learning.trouble shooting and problem solving
Most of the skills are acquired through practical experience .
9.5.08
JOB OPPORTUNITIES AT CHEMFLUID
We are an established Company and on expasnion mode .There are job opportunities
for people with keen interest to develop career in the pump industry .
The Company will provide training on this field and only those committed to long term
employment shall apply .Benefits are good incentive ,oversea trip and good working enviroment
Position : Product Manager ,Product Executive
Requirement : Diploma /Degree in Engineering
Language : Fluent in English
Working Experience: Preferably those famililar with the Chemical /Oil & Gas /Palm Oil Industry
Send your resume to :teysh@chemfluid.com
for people with keen interest to develop career in the pump industry .
The Company will provide training on this field and only those committed to long term
employment shall apply .Benefits are good incentive ,oversea trip and good working enviroment
Position : Product Manager ,Product Executive
Requirement : Diploma /Degree in Engineering
Language : Fluent in English
Working Experience: Preferably those famililar with the Chemical /Oil & Gas /Palm Oil Industry
Send your resume to :teysh@chemfluid.com
6.5.08
Selecting Anti Vibration Mounting Pad
There several types of anti vibrating mounting pad in the market , to suit various
operating condition and types of equipment
Check out the total equipment weight ,and work out the load per cm2
Select type and checking rating of the anti vibration pad you choose
example .it will specify max allowable load is 6 kgs/cm2
operating condition and types of equipment
Check out the total equipment weight ,and work out the load per cm2
Select type and checking rating of the anti vibration pad you choose
example .it will specify max allowable load is 6 kgs/cm2
5.5.08
Sanitary Products in Food /Pharmaceutical Industry
What is Sanitary to the Food / Pharmaceutical Industry ?
Here are some interesting facts
1) to some . anything that does not rust and looks shiny is sanitary
even Grade 2 B stainless steel pipes used for ornamental purpose are being used in some backyard food
manufacturers
2) there are also SS316 so called sanitary pipes are being used ,without complying to certain manufacturing
requirements
3) There are few standards of piping materials to meet your process need
a) Sanitary Standard
~ surface finish of Ra 1.6 or better
b) High Clean & Tri Clover
~ Surface finish of Ra = 0.80
c) Pharma standard
~ Surface Finish internally Ra =0.4 or better
The level of cleanability in a pump or eqiupment will determine the level of compliance to FDA,and there are few levels to meet each process requirement ( will be published later )
The Health Ministry has announced years ago Certification of High Risk Food to be Mandatory
to come under Hazard Analysis & Critical Control Point
Hope serious enforcement will be carried out , although it is going to be a very
tough job to get the smaller manufacturer to comply and see the benefits
We had been busy trying to educate the our customer on the need of getting right material or pumps
for their application, but not sucessful as cost factor come first and compatibility last
Readers are welcome to contribute your findings and thoughts
Here are some interesting facts
1) to some . anything that does not rust and looks shiny is sanitary
even Grade 2 B stainless steel pipes used for ornamental purpose are being used in some backyard food
manufacturers
2) there are also SS316 so called sanitary pipes are being used ,without complying to certain manufacturing
requirements
3) There are few standards of piping materials to meet your process need
a) Sanitary Standard
~ surface finish of Ra 1.6 or better
b) High Clean & Tri Clover
~ Surface finish of Ra = 0.80
c) Pharma standard
~ Surface Finish internally Ra =0.4 or better
The level of cleanability in a pump or eqiupment will determine the level of compliance to FDA,and there are few levels to meet each process requirement ( will be published later )
The Health Ministry has announced years ago Certification of High Risk Food to be Mandatory
to come under Hazard Analysis & Critical Control Point
Hope serious enforcement will be carried out , although it is going to be a very
tough job to get the smaller manufacturer to comply and see the benefits
We had been busy trying to educate the our customer on the need of getting right material or pumps
for their application, but not sucessful as cost factor come first and compatibility last
Readers are welcome to contribute your findings and thoughts
Pipe Joint Breakage or Pump Casing Cracked
If you your pipe welded joint broke often or pump casing cracked ,it is likely
due to misalignment between pipe and pump casing
The pipe could be pulling to one side ,and is creating a lot of pressure on the pipework
and casing
Remove the bolts and nuts to check if the pipe flange stays parallel to the pump casing flange
Check both pump and pipe centre line , realign
This also cause vibration to pumpsets
Very often contractor weld the pipe first before alignning to the pumpset
and later will try pulling the pipe to meet the pipe pump inlet/outlet
This is very common and happening all the time here
Plant people will always blame the pumpset supplier or coupling not properly aligned
due to misalignment between pipe and pump casing
The pipe could be pulling to one side ,and is creating a lot of pressure on the pipework
and casing
Remove the bolts and nuts to check if the pipe flange stays parallel to the pump casing flange
Check both pump and pipe centre line , realign
This also cause vibration to pumpsets
Very often contractor weld the pipe first before alignning to the pumpset
and later will try pulling the pipe to meet the pipe pump inlet/outlet
This is very common and happening all the time here
Plant people will always blame the pumpset supplier or coupling not properly aligned
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