RFP_1100_MMH3047_ATT_4_v1.pdf

This attachment to RFP 1100 MMH3047 establishes technical specifications for electric motor sleeve bearing clearances at Decker Creek Power Station for large industrial motor repairs serving Austin Energy and Austin Water. The document provides a comprehensive specification table detailing diametral clearance requirements for sleeve bearings across nominal diameters ranging from 1 inch to 10 inches. Each bearing size is assigned specific minimum and maximum clearance tolerances, with clearances increasing proportionally to bearing diameter. For example, 1-inch nominal diameter bearings require 0.004 to 0.005 inches of clearance, while 10-inch diameter bearings require 0.020 to 0.025 inches of clearance. These specifications establish the precision standards that repair contractors must achieve when performing maintenance, repair, overhaul, and rewinding services on large industrial motors operated by the two Austin municipal utilities.

The clearance specifications document serves as a critical quality control and performance standard that bidders must understand and comply with throughout the repair process. Contractors must demonstrate capability to meet these tight dimensional tolerances during motor disassembly, bearing assessment, repair, and reassembly operations. Adherence to these specifications ensures that repaired motors will function safely and reliably within the operational parameters required by Austin Energy and Austin Water, and the specifications function as measurable acceptance criteria for completed repair work.