Monday, August 6, 2012

Source of Firewater

I expect now that you know the minimum required amount of firewater. We have to find where to get it. 
- Is there a nearby water source like sea, river, or pond?
- Is the utility water, supplied by the utility company is reliable?
- Can I get water from underground water wells?

The firewater could be taken from the nearby body of water; sea, river, or pond. If not, then we have to store the firewater that will be used only for fire fighting. The most common way of storing the firewater is by storage tanks. 

What should be the capacity of your fire water storage tank? It depends on the expected fire hazards and fire fighting. Actual fire can last for days or it can be extinguished within 30minutes. Therefore, it is best to be guided with local regulations or international standards when deciding for the capacity of the storage tanks. Some industrials plants have a minimum off 1.5hours storage capacity sufficient for continuous fire fighting the largest demand. In refineries and bulk terminals, the fire water storage tanks ranges from 4hours to 6 hours. 


How Much Water Do I Need - Firewater Demand

I remember the time when I was in my primary school. I think I was 11 or 12 years old when our dirty kitchen caught on fire. I was cooking our rice in the earthen jar/pot in our dirty kitchen, which I use dried woods, coconut shell, and dried coconut leaves. At that time I was using coconut shell because it produces high intensity fire, jet fire like effect. By experience, coconut shell will speed up the cooking time. 

Our dirty kitchen is about a meter and a half wide. About 400 mm above the fire hole is used to dry the woods, coconut leaves, and the rib of the coconut leaves. Because of the jet fire effect of the coconut shell some of the dried coconut leaves caught on fire, but not flaming. The fire is small and manageable. Only a few pieces of leaves are burning, but just a smoke. I need water. I went inside our house to get a cup of water...I know that fire is small that a cup of water is enough. My elder sister saw me in a hurry with a cup of water in my hand. "What's that for" she asked. "Our dirty kitchen is burning" I said. Then she run to see and both of us are in shock...the flame is huge and it almost the entire dried leaves above the pot of rice. My sister went inside back in our house and asked the help of my elder brother to fight the fire. My brother used a pail of water and dump it on to the flaming fire and he get another pail of water to extinguish the rest of the fire. This is my true experience if fire fighting and it happened when I was a kid.

Based on that experienced I learned that fire could spread faster than my action. Also, the amount of water, a cup of water or two pails of water. 

Several codes and standards are used to estimate the minimum amount of firewater required for firefighting. The codes and standards will provide the application rate of firewater and the discharge duration. 

Now that you know how much water is needed. Where do we get the water? That would be in another post.


Sunday, August 5, 2012

Paano Gumamit ng Pipenet

Ako ay susulat ng mga panuntunan sa paggamit ng Pipenet. Bakit ko ito nilalathala sa wikang tagalog? Kasi mahal ko ang sarili kong wika.

1. Panimula
 Ang panuntunan na ito ay aking ginawa upang ang mga baguhan sa paggamit ng Pipenet ay may magamit na reperensya upang gamiting gabay sa pagkalkula ng tamang taba ng tubo, tamang dami ng tubig, at kailangang lakas ng tulak ng tubig.


2. Sakop
Ang sakop ng panuntunan na ito ay ang mga sistemang pamproteksyon sa apoy gamit ang tubig. Ang pagbigay ng tamang taba ng tubo, tamang dami ng tubig, at kailangang lakas ng tulak ng tubig.


3. Kahulugan
Ang mga sumusunod ay mga kahulugan ng mga salitang ginamit sa panuntunan na ito:





4. Larawang Panuntunan



5. Mga Kailangan

Ang mga sumusunod ay kailangan bago simulan ang paggawa ng modelo sa Pipenet.