Bankrupt Pittsburgh Brewing filed its long-awaited reorganization plan yesterday, saying it intends to modernize the 145-year-old Lawrenceville brewery with $7 million from investors and lenders.

The investment would be used to pay bankruptcy-related expenses and purchase a new boiler and a keg system, which would allow the brewery to expand sales to taverns. Remaining funds would be used for marketing. The plan is based on estimated annual savings of $1 million annually by revising its labor agreement and terminating a union pension plan.

Pittsburgh Brewing's plan, filed in U.S. Bankruptcy Court, Downtown, does not disclose the investors or who would provide financing to the company. The loans would be in addition to a $500,000 line of credit the company has arranged through Craig Newbold, an East Liverpool, Ohio, native whose fortune is based on a software venture he developed and sold.

Some long-suffering creditors will likely object to the 18-page plan, which contests claims filed against Pittsburgh Brewing by several major creditors, most of them government agencies. Unsecured creditors would get 33 cents for every $1 they are owed. They would get less if creditors win claims the brewery is disputing.