Abstract: A combustion control system [100] for a combustion system [7] having a plurality of fuel pipes [5]. The combustion control system [100] including a plurality of flow meters [10], a controller [8], fuel flow controls [11] and secondary air controls [61,62,72]. Each meter [10] is adapted to monitor flow of fuel within a respective one of the fuel pipes [5] by sensing a pressure field within the fuel pipe [5]. A controller [8] receives the flow information from each of the flow meters [10], to evaluate performance of the combustion system [7]. Controller [8] also providing control information for controlling the flow of secondary air dampers [61,62,71] into the combustion system [7], and optionally controlling the flow of fuel in each fuel pipe [5].

Abstract: A wear plate 52 for mounting in a wear protecting disposition on a rotor disc 50 of a pulverizer 38 includes a body portion 64 having a radially outer circumferential edge 74 and a radially inner circumferential edge 76, an abutment shoulder 72 along the one angular edge of the wear plate 52, an underlap flange 78 on the one angular edge of the body portion 64, and an overlap rim 80 on the other angular edge of the body portion 64. The underlap flange 78 is cooperatively configured with respect to an overlap rim 80 of a respective adjacent wear plate 52 that is in interengagement with the wear plate 52 such that the overlap rim 80 of the respective adjacent wear plate 52 at least partially overlaps the underlap flange 78 of the wear plate 52.