What is meant by priming how can it be prevented?

What is meant by priming how can it be prevented?

Priming is sometimes aggravated by impurities in the boiler-water. ​ The most common measure to prevent foaming and priming is. to maintain the concentration of solids in the boiler water at reasonably low levels. Avoiding high water levels, excessive boiler loads, and sudden load changes also helps.

What action would you do if in case foaming and priming occurs?

What action do you made take in case of foaming and priming ?

1. Scum blow down.
2. Reduce boiler fire rate.
3. Check whether boiler chemical added are in excess.
4. Detect the source of contamination.
5. In case of bad priming the boiler may have to be taken out of service, shut down.

How do I lower the alkalinity in my boiler water?

When boiler water alkalinities rise above the recommended maximum, reduce the feed of alkali bearing materials or reduce the total alkalinity of the treated water if a softener is used. In an emergency, increase the blow down rate if necessary to bring boiler water alkalinity under control.

What are the requirements of boiler feed water?

Boiler water treatment is used to control alkalinity, prevent scaling, correct pH, and to control conductivity. The boiler water needs to be alkaline and not acidic, so that it does not ruin the tubes. There can be too much conductivity in the feed water when there are too many dissolved solids.

How do you calculate boiler feed water?

1. To calculate the flow rate in GPM, use the following formula: BHP X 34.5 ÷ 8.337 ÷ 60 X 1.5 = gpm.
2. For the example we have been using the calculation will look like this: 500 BHP X 34.5 ÷ 8.337 ÷ 60 X 1.5 = 52 gpm.
3. For this example we will say that our relief valve is set at 150 psig and there is a 5 lb. pressure drop.

What should the pH of boiler water be?

pH 11

How do I increase the pH in my boiler?

A typically recommended alkalinity rating is 140 – 700 ppm for boilers operating below 300 psi. pH is controlled by either removing water impurities or adding other chemicals to neutralize the condition. For example, Caustic Soda, an alkaline, is added to neutralize CO3, carbonic acid.