Fuel oil pollution control and additional maintenance required after burning it often outweigh the low cost of the fuel. Burning fuel oil, particularly residual fuel oil, produces uniformly higher carbon dioxide emissions than natural gas. Heavy fuel oils continue to be used in the boiler "lighting up" facility in many coal-fired power plants. This use is approximately analogous to using kindling to start a fire. Without performing this act it is difficult to begin the large-scale combustion process. The chief drawback to residual fuel oil is its high initial viscosity, particularly in the case of No. 6 oil, which requires a correctly
Pakistan Nuclear Power Fuel Complex late 2010. Cost of the Pakistan Nuclear Power Fuel Complex (PNPFC) was originally estimated at Rs. 51.298 billion. The complex will fabricate fuel for local nuclear power plants, in particular for the reactors at Chashma Nuclear Power Plant. The Nuclear Power Fuel Facility comprises Chemical Processing Plants, Nuclear reprocessing plant, an Enrichment Plant, a Seamless Tube Plant; a Fuel Fabrication Plant; and a Nuclear Fuel Testing Facility. For information on Pakistani nuclear power reactors, see the articles Chashma Nuclear Power Plant and Karachi Nuclear Power Plant. Pakistan Nuclear Power Fuel Complex The Pakistan Nuclear Power Fuel Complex (PNPFC), also known