This report presents the status of the work performed on a program for the test and evaluation of hot gas cleanup devices for a PFBC combined cycle system. The work was performed during the period March 1,1982 through May 31,1982. This is the fourth quarterly report since the start of the program. Work was completed which restored the pressurized fluidized bed (PFB) technology plant at Wood-Ridge, New Jersey to an operational status. Preliminary designs to incorporate each of three advanced gas cleanup devices into the facility following a first stage low pressure drop inertial type separator were previously completed. The advanced devices are provided, by suppliers under separate DOE contracts. They include a ceramic bag filter, and electrostatic precipitator and an electrostatically enhanced inertial separator. The final modifications to the facility for the test of the ceramic bag filter were completed. Testing of this system was started in April 1982. Concurrently with the filter tests, DOE supplied instrumentation for on-line particle sampling and alkali metal content measurement in the bas stream were under evaluation. 36 figures, 2 tables.