NCCCO Drill Rig Practice Questions - NCCCO Drill Rig Operator (DRO) Certification Exam

During pre-operational inspection of a foundation drill rig, hydraulic hoses should be checked primarily for:

Color and brand markings Cuts, abrasion, bulges, kinks, and leaks Manufacturer date stamps only Hose internal pressure rating with a gauge

Correct Answer:

Cuts, abrasion, bulges, kinks, and leaks

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