The adjustments to convert net income to cash flow from operations generally. involve (1) adding the amount by which an expense exceeds the related cash expenditure for the period (for deprecia-. tion, the entire amount), (2) subtracting the amount by which a revenue exceeds the related cash receipt for the period.
Gas Furnaces: Cracked Heat Exchangers. The most common reason for a natural gas furnace to leak carbon monoxide is from a crack in the heat exchanger. The heat exchanger is the metal wall or tubing that is heated up when the burners are ignited.
Causes. Carbon monoxide poisoning is caused by inhaling combustion fumes. When too much carbon monoxide is in the air you're breathing, your body replaces the oxygen in your red blood cells with carbon monoxide.This prevents oxygen from reaching your tissues and organs.ormally the amount of carbon monoxide produced by these sources isn't cause for concern. But if they're used in a closed or partially closed space â such as using a charcoal grill indoors â the carbon monoxide can build to dangerous levels. Smoke inhalation during a fire also can cause carbon monoxide poisoning.