The Nuclear Power Training Unit (NPTU) requires a major maintenance overhaul of its High-Pressure Air (AHP) System to maintain operational reliability, readiness, and mission support. The designated multi-stage AHP compressors require an 8,000-hour major overhaul, including complete teardown, component replacement, tolerance verification, and re-certification. The contractor must provide all labor, certified replacement parts, tooling, and test equipment, with work performed strictly in accordance with Maintenance Requirement Card AHP-R-2 (Rev 3). Maintenance actions must be phased to ensure continuous, redundant compressor availability throughout the period of performance. Full requirements, Instructions to Offerors (FAR 52.212-1), and the evaluation basis (FAR 52.212-2) are detailed in the solicitation attachments, which should be reviewed thoroughly.