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Microtunneling machine application and required finished result; Ground and face: Provide geotechnical data, water pressure, obstructions and tunnel alignment. Cutting tools and face-support method must suit the actual conditions.; Jacking and guidance: Specify pipe diameter, allowable jacking loads, drive length and line tolerances. Guidance, lubrication, separation and intermediate arrangements may govern the installation.; Representative input variation and difficult operating conditions; Application risks and exclusions: A tunneling head alone cannot establish project feasibility; shafts, settlement control, spoil treatment and pipe design need coordinated engineering.; Site and supporting services: Plan launch and reception shafts, jacking frame, slurry or spoil services, power, lifting and confined-work responsibilities.; Acceptance method and retained evidence: Verify configuration and guidance, record face and jacking conditions and inspect alignment and installed-pipe condition against the approved method.; Maintenance and support scope: Inspect cutting tools, seals, pumps, guidance devices and jacking components; preserve calibration and wear records.; OEM/ODM changes requested: Cutting heads, pipe interfaces, guidance and controls may be engineered; new ground and drive lengths require design review.; Destination, local installation conditions and documentation language; Drawings, samples, tooling ownership and revision control; Operating sequence, changeovers, training and commissioning responsibilities.