BLUE BELL, Pa., Feb. 19, 2013 /PRNewswire/ -- Unisys Corporation (NYSE: UIS) announced today that it has been awarded the Enterprise Computing Center Support (ECCS) contract from the Internal Revenue Service (IRS) to continue support of the agency's mission-critical computer environment. Under this single-award indefinite delivery-indefinite quantity (IDIQ) contract, the IRS can award Unisys task orders to provide support and maintenance services for the IRS computing environment, including Unisys ClearPath Dorado servers. These systems and others in the IRS tier-one computing environment support all of the agency's mission-critical functions such as processing tax returns and maintaining taxpayer records. The IDIQ contract has a one-year base period and nine one-year options, exercisable at the discretion of the government, with a ceiling value of $650 million over 10 years if all options are exercised. All work on this contract will be performed under task orders. The first task order awarded so far to Unisys under the contract is firm-fixed-price and has a one-year base period and nine one-year options, exercisable at the discretion of the government. The value of the contract's base period is approximately $14.6 million. The value of each option year increases incrementally over the previous year, and the total task order value is approximately $186.7 million if all options are exercised. Unisys performed similar work for more than a decade under the predecessor Service Center Support System contract. Under that contract, Unisys supported the IRS in maintaining a highly reliable, mission-critical computing environment and helped the agency consolidate and modernize its mission-critical processing operations. "With this contract award, Unisys continues our work with the IRS to help the agency with its mission-critical computing operations," said Venkatapathi "PV" Puvvada, group vice president, civilian agencies, Unisys Federal Systems. "We look forward to working with the IRS to provide secure and efficient service in support of U.S. taxpayers."