NASA, DOD, DOE, as well as United Kingdom NDA or MOD sites). (o). Hybrid power generation systems or associated equipment where renewable energy sources are combined with a combustible fossil fuel (e.g., coal, coal slurry, oil or natural gas) or combustible waste fuel (e.g., carbon monoxide, biomass, black liquor, MSW or RDF) primary energy source, other than maintenance and operation services performed as part of overall facility operation and management contracts for domestic or foreign government agencies or entities (including but not limited to NNSA, NASA, DOD, DOE, as well as United Kingdom NDA or MOD sites). 3. Engineering procurement, construction, installation, supply, lease, commissioning, training , delivery, inspection, testing of, support, operations, maintenance, upgrade, repair, refurbishment, rebuilding, replacement, modification, relocation, project management, construction management, technical advice, construction consultation, siting support or consultation, environmental services or consultation, safety, health, troubleshooting, cleaning, upgrading and tooling of balance of plant for power generation facilities fired with combustible fossil fuels (e.g., coal, coal slurry, oil or natural gas) and pulp and paper facilities, other than maintenance and operation services performed as part of overall facility operation and management contracts for domestic or foreign government agencies or entities (including but not limited to NNSA, NASA, DOD, DOE, as well as United Kingdom NDA or MOD sites). RemainCo Core Field means: 1. Design, development, research, engineering, procurement, fabrication, analysis, manufacture, construction, installation, supply, marketing, sale, lease, rent, commissioning, training, delivery, inspection, testing of, support, operations, inspection, maintenance, upgrade, repair, refurbishment, rebuilding, replacement, modification, repowering/fuel switching, relocation, localization, or other services, including project management, construction project management or consultation, plant, system or component licensing, siting support or consultation, environmental, safety, health, laboratory analysis, engineering studies, field engineering services, nondestructive testing, evaluation or analytical services, metallographic analysis, consulting services, troubleshooting, failure analysis, cleaning, upgrading, tooling, or decommissioning,