Abstract: A system for power generation using low pressure gasification of a stock fuel, such as coal or biomass. The system can include a gasifier, a gas clean up unit connected to a gas compressor, a gas turbine combustion system, a heat recovery steam generator, and a steam turbine. The gasifier can provide low pressure synthetic methane gas to the gas clean up unit, which can remove tars and sulfur from the synthetic methane gas, and can cool the synthetic methane gas. The gas compressor can receive the cooled synthetic methane gas and can compress the cooled synthetic methane gas. The gas turbine combustion system can receive the compressed synthetic methane gas and produce power and an exhaust gas. The heat recovery steam generator can receive the exhaust gas and generate steam. The steam turbine can receive the steam from the heat recovery steam generator and generate power.

Abstract: A method of boring a plurality of aligned, mating bolt holes in a pair of separated coupling flanges comprising the steps of:a) providing a template with pre-formed holes matching a desired location for bolt holes in the pair of coupling flanges;b) securing the template to a first of the pair of coupling flanges;c) attaching a boring tool to the template in alignment with one of the bolt holes;d) re-boring one of the bolt holes in the first coupling flange and repeating steps c) and d) for each remaining bolt hole individually in succession;e) removing the boring tool and template from the first coupling flange;f) relocating the template on the second of the pair of coupling flanges; andg) repeating steps b) through e) for the bolt holes in the second coupling flange.

Abstract: The repair method includes removing eroded or damaged trailing edge portions of partitions in the diaphragm of a turbine, over 50% of the length of the partitions being removed commencing at the trailing edge. A coupon which is a precise replication of a portion of an originally specified partition is welded to the remaining or extant partition portion by a seal weld along the radial length of the coupon on the suction side of the repaired partition and two full penetration welds at the ends of the coupon to secure it to the inner and outer rings or side walls of the diaphragm. The repaired partition is thus substantially identically contoured as the original partition.

Abstract: The repair method includes removing eroded or damaged trailing edge portions of partitions in the diaphragm of a turbine, over 50% of the length of the partitions being removed commencing at the trailing edge. A coupon which is a precise replication of a portion of an originally specified partition is welded to the remaining or extant partition portion by a seal weld along the radial length of the coupon on the suction side of the repaired partition and two full penetration welds at the ends of the coupon to secure it to the inner and outer rings or side walls of the diaphragm. The repaired partition is thus substantially identically contoured as the original partition.