A propane tank explosion is a type of BLEVE, or Boiling Liquid Expanding Vapor Explosion. This type of explosion occurs when the pressure in the tank exceeds that which it can safely vent. Eventually, rising pressure will cause the tank to rupture and burst. Cause. A propane BLEVE occurs mainly when it is exposed to high temperatures, like a fire. The temperature heats the liquid propane inside the tank, causing it to expand to a point that the stress it places on the tank becomes too high. When propane gas leaks from the tank in a fire, it will ignite and can cause an explosion. Relief Valve. All propane tanks are equipped with a relief valve. When the pressure inside a tank rises, the relief valve opens and starts venting gas to bring the pressure down.
The exemption is composed of personal exemptions for the individual taxpayer and, as appropriate, his or her family and dependents, as provided in Internal Revenue Code at 26 U.S.C. Â§ 151. The income tax liability is calculated by applying the appropriate tax rate to the taxable income (26 U.S.C. Â§ 1). 1 Overview.
What is a personal exemption? A personal exemption (not to be confused with the Health Care penalty exemption) is tax-free money you get to deduct from your income for every taxpayer and dependent claimed on your return. For 2016, the exemption is $4,050 per person, which means a jointly-filing couple with 2 dependents get an exemption of $16,200 (4 people x $4,050).