skillfactor-pipeline/skills/derrickhand/references/tasks.md

Tasks & work activities — derrickhand

Source: O*NET 30.3, occupation 47-5023.00 (Earth Drillers, Except Oil and Gas).

Task statements

• [Core] Regulate air pressure, rotary speed, and downward pressure, according to the type of rock or concrete being drilled.
• [Core] Verify depths and alignments of boring positions.
• [Core] Start, stop, and control drilling speed of machines and insertion of casings into holes.
• [Core] Select the appropriate drill for the job, using knowledge of rock or soil conditions.
• [Core] Operate controls to stabilize machines and to position and align drills.
• [Core] Select and attach drill bits and drill rods, adding more rods as hole depths increase, and changing drill bits as needed.
• [Core] Operate machines to flush earth cuttings or to blow dust from holes.
• [Core] Drive or guide truck-mounted equipment into position, level and stabilize rigs, and extend telescoping derricks.
• [Core] Perform routine maintenance and upgrade work on machines and equipment, such as replacing parts, building up drill bits, and lubricating machinery.
• [Core] Drive trucks, tractors, or truck-mounted drills to and from work sites.
• [Core] Record drilling progress and geological data.
• [Core] Retrieve lost equipment from bore holes, using retrieval tools and equipment.
• [Core] Assemble and position machines, augers, casing pipes, and other equipment, using hand and power tools.
• [Core] Document geological formations encountered during work.
• [Supplemental] Drill or bore holes in rock for blasting, grouting, anchoring, or building foundations.
• [Supplemental] Pour water into wells, or pump water or slush into wells to cool drill bits and to remove drillings.
• [Supplemental] Operate water-well drilling rigs and other equipment to drill, bore, and dig for water wells or for environmental assessment purposes.
• [Supplemental] Perform pumping tests to assess well performance.
• [Supplemental] Withdraw drill rods from holes, and extract core samples.
• [Supplemental] Retract augers to force discharge dirt from holes.
• [Supplemental] Place and install screens, casings, pumps, and other well fixtures to develop wells.
• [Supplemental] Design well pumping systems.
• [Supplemental] Disinfect, reconstruct, and redevelop contaminated wells and water pumping systems, and clean and disinfect new wells in preparation for use.
• [Supplemental] Review client requirements and proposed locations for drilling operations to determine feasibility, and to determine cost estimates.
• [Supplemental] Signal crane operators to move equipment.
• [Supplemental] Inspect core samples to determine nature of strata, or take samples to laboratories for analysis.
• [Supplemental] Fabricate well casings.
• [Supplemental] Create and lay out designs for drill and blast patterns.
• [nan] Monitor drilling operations, by checking gauges and listening to equipment to assess drilling conditions and to determine the need to adjust drilling or alter equipment.

Detailed work activities

• Assemble products or production equipment.
• Clean equipment or facilities.
• Collect geological samples.
• Decontaminate equipment or sites to remove hazardous or toxic substances.
• Design energy production or management equipment or systems.
• Determine appropriate locations for operations or installations.
• Develop equipment or component configurations.
• Drill holes in earth or rock.
• Drive trucks or truck-mounted equipment.
• Fabricate parts or components.
• Inspect equipment or tools to be used in construction or excavation.
• Install drilling equipment.
• Maintain drilling equipment.
• Measure work site dimensions.
• Monitor extraction operations.
• Operate cranes, hoists, or other moving or lifting equipment.
• Operate drilling equipment.
• Operate pumps or compressors.
• Position construction or extraction equipment.
• Pour materials into or on designated areas.
• Prepare excavation or extraction sites for commissioning or decommissioning.
• Record operational or environmental data.
• Remove debris or vegetation from work sites.
• Review blueprints or specifications to determine work requirements.
• Select construction equipment.
• Signal equipment operators to indicate proper equipment positioning.