Watch for these overload signals: dimming lights when an appliance goes on, a shrinking TV picture, slow heating appliances, or fuses blowing frequently. Call a qualified electrician to get expert help. Remember, use an extinguisher on small fires only.Learn how to use your fire extinguisher before there is an emergency.Purchase an ABC type extinguisher for extinguishing all types of fires.Fire extinguishers should be mounted in the kitchen, garage, and workshop.They remain your best bet if you're on the spot when a fire begins. Class C fires involve energized electrical equipment, such as appliances, switches, panel boxes, power tools, hot plates and stirrers.Class B fires involve flammable or combustible liquids such as gasoline, kerosene, and common organic solvents.Class A fires are ordinary materials like burning paper, lumber, cardboard, plastics, etc.If there is a large fire, get out immediately and call 911 from another location. ![]() Class D fires involve combustible metals, such as magnesium, titanium, potassium and sodium as well as pyrophoric organometallic reagents such as alkyllithiums, Grignards and diethylzinc.Water is a particularly dangerous extinguishing medium for class C fires because of the risk of electrical shock. These materials burn at high temperatures and will react violently with water, air, and/or other chemicals. Some fires may be a combination of these! Your fire extinguishers should have ABC ratings on them. These ratings will often have numbers on them that look something like "3-A:40-B:C". Higher numbers mean more firefighting power. Water Extinguishers are suitable for class A fires, but not for class B, C, and D such as burning liquids, electrical fires or reactive metal fires. ![]() In these cases, the flames will be spread or the hazard made greater.ĭry Chemical Extinguishers are useful for class ABC fires and are your best all around choice. Type ABC fire extinguishers contain ammonium phosphate.ĬO2 (carbon dioxide) extinguishers are for class B and C fires.Type BC fire extinguishers contain sodium or potassium bicarbonate.They also make a terrible mess, but if the choice is a fire or a mess, take the mess! There are two kinds of dry chemical extinguishers: They have an advantage over CO2 extinguishers in that they leave a blanket of nonflammable material on the extinguished material which reduces the likelihood of re-ignition. They don't work very well on class A fires because the material usually reignites. CO2 extinguishers are not approved for class D fires! CO2 extinguishers have an advantage over dry chemical in that they leave behind no harmful residue - a good choice for an electrical fire on a computer or other delicate instrument. The way to do this is to attach an event script to the actionPerformed event.Metal/Sand Extinguishers are for flammable metals (class D fires) and work by simply smothering the fire. ![]() ![]() In contrast, a script that works via a Timer component will only run while the window that contains the Timer is open, and the Timer is running. Want to run a script every time the timer counts? First, make sure you don't actually want to write a project Timer Script, which will run on some interval whenever the application is running. How fast the timer counts is up to the Delay property, which is the time between counts in milliseconds. It is often useful to bind other values to a timer's Value property.įor instance, if you set the timer's Bound property to 360, and bind an object's rotation to the Value property, the object will spin in a circle when the timer is running. When running, the timer's Value property is incremented by the Step By value, until the value tis the Bound, at which point it repeats. This is often used for animations or repetitive scripts within a window. The timer button is an invisible button that can be used to create repeated events in a window.
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