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Common failure of Fire Pump and Solutions to it

Common failure of Fire Pump and Solutions to it

Fire pumps are quintessential to guarantee fire safety of the person as well as property. Therefore, to ensure the effective working and long life of the fire pumps, it is important to understand the problems that might occur in a Fire pump, Various causes behind it and what are the solutions to these problems.

 

Most of the problems are because of the internal malfunctioning, hence one should know about the different parts of the pump as well.

 

 

 


 

Below mentioned are some of the problems that might occur in a fire pump.

 

1. Abnormal Vibrations-

 

S.no.

Causes

Solution

1.

Misalignment of pump

A number of devices are available for measuring alignment offsets including dial indicators and laser alignment tools. Close coupling and Laser Shaft Alignment method can be used to align the pump.

2.

Bending of fire pump shaft

Getting the fire pump straightened or replacing it with the new one 

3.

Impeller imbalance

Finding balance by adding or removing material, by drilling, milling, or grinding.

 

2. Failure of discharge of water- 

 

S.no.

Causes

Solution

1.

Size of the pipe is small as compared to the water discharge.

Change the water pipe to that of suitable size

2.

The actual head exceeds the designed head

Shift to another Fire pump/ change the impeller

3.

Presence of air in the suction pipe

Exhaust the air from the suction pipe

4.

Suction head exceeds the designed suction head

Install fire pump according to the rated suction.

5.

Suction pipe, discharge pipe and pump inlet was partially clogged by impurities

The pipes need to be checked and cleaned up.

6.

Pump direction is opposite

Change the direction accordingly.

 

3. Leakage of mechanical seal of fire pump-

 

S. no.

Causes

Solution

1.

Spring out of action because of loose fixing of screws

fastening screw or re-adjusting spring

2.

Insufficient spring pressure

re-adjust the amount of compression spring or change the spring

3.

stationary ring assembly skew

reinstall fire pump stationary ring

4.

Wrap or static ring face corrosion, wear or scratches

repair or replace the bad ring, stationary ring

5.

impurities, foreign bodies or medium Crystallization axial movement of ring or support moving between the end face of the stationary ring

Eliminate impurities, foreign bodies and crystallization, thoroughly clean the sealing element

6.

The seal ring assembly/ volume deformation or corrosion

Reinstall or replace fire pump seal ring

 

4. Overheating of fire pump motor-

 

S.no.

Causes

Solutions

1.

Pressure tight packing gland or mechanical seal spring tuned too tight

Re-adjust gland or mechanical seal spring compression.

2.

The Range (flow, head) is used more than the fire pump design requirements

Choose the right motor by series spectrum

3.

Fire pump assembly quality is poor; there is friction with the Fire Department or the motor shaft misalignment

Check the assembly quality, eliminate assembly failure.

4.

Media accounted for more than the fire pump motor configuration

Configure the appropriate fire pump motor. 


 

Udyog Engineering is one such supplier of fire pumps and engineering products in India, who offer customized fire protection packages to their customers. Their pumps are of best quality and ensure maximum safety.

 

If anyone needs any assistance in relation to fire pumps, then they can reach out to Udyog Engineering at enquiry@udyogengineering.com

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