Job Site Procedure
Location Arrival Checklist:
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Meet with the company representative & discuss the job plan (or procedure). Check all elevations and desired penetration.
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Review the rigs safety policy & evacuation procedures.
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Check equipment against delivery tickets and shipping tickets to ensure all items have arrived on location.
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Check equipment for damages. Also check all fluid levels and make sure all equipment is operational.
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Take all pipe that is on location and record any drive shoes, hangers, or coated pipe, etc. If the pipe total is less than that used on offset wells, notify the company representative.
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Get information from the company representative of any +10 valves or swages that will be installed after the pipe is driven. Ensure that these items are on location.
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Check on any hot work permits that may be required.
Installation of
Driven Pipe or Caisson:
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Rig up & spot equipment. Be aware of any heavy lifts, and use tag lines when possible.
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Place the toolbox and bottle rack near the work area.
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Hook up the cutting equipment (torches, gauges, etc.).
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Rig up the slings and spreader bar (hammer and pipe slings).
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Rig up the welding equipment and string out the welding cables (rig up power unit and tongs if this is a connector job).
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Pull the rotary bushing and set up the false rotary or base plate.
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Pick up the first joint and set it in the rotary, making sure that it is level. Then pick up the second joint and proceed to make up the connection.
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Continue adding sections until the string of pipe is about 40' above the mudline.
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Rig up the hammer and any drive subs or drive adapters that may be needed.
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Add the next pipe section.
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When the pipe starts to penetrate the mudline, monitor any free fall. Once the pipe has stopped settling, set the weight of the hammer on the pile.
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When the pipe stops settling, start the hammer in a low energy settling or dead lick the pile. Monitor free fall.
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Once the soil is firm enough, start the hammer and be prepared to shut it down if the pile should start to free fall again.
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Continue adding pipe sections and driving until refusal or the desired penetration is met. (Note: Do not exceed 250 blows per foot at maximum hammer energy.)
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Make the final elevation cutoffs and install the starter head if approved. Complete any other nipple up work.
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Rig down hammer and slings.
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Rig down all welding and cutting equipment.
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Back load equipment on motor vessel.
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Make location report (Blow Count, Field Ticket, JPR Book, Etc.)