What is the proper method to remove sand from a hollow-stem auger after drilling in sand-rich conditions?

What is the proper method to remove sand from a hollow-stem auger after drilling in sand-rich conditions?

• A. Wash the sand out with approved water
• B. Cap the borehole and wait for rainfall
• C. Use dry heat to evaporate the water
• D. Shake the auger to eject sand

Answer: (A)

In sand-rich drilling, the hollow stem tends to collect sand as you withdraw the auger. Flushing with approved water down the hollow stem pushes the sand up and out to the surface, clearing the auger and helping keep the borehole from clogging or sticking. Using clean, approved water ensures you’re not introducing contaminants while you flush, which is standard practice to maintain a clear, stable borehole. Waiting for rainfall isn’t reliable or controllable in the field, and cap­ping the borehole won’t remove the accumulated sand. Dry heat isn’t appropriate here and could cause safety issues or equipment problems. Shaking the auger doesn’t effectively remove the sand lodged inside the stem and can lead to damage or inefficiency.

In sand-rich drilling, the hollow stem tends to collect sand as you withdraw the auger. Flushing with approved water down the hollow stem pushes the sand up and out to the surface, clearing the auger and helping keep the borehole from clogging or sticking. Using clean, approved water ensures you’re not introducing contaminants while you flush, which is standard practice to maintain a clear, stable borehole.

Waiting for rainfall isn’t reliable or controllable in the field, and cap­ping the borehole won’t remove the accumulated sand. Dry heat isn’t appropriate here and could cause safety issues or equipment problems. Shaking the auger doesn’t effectively remove the sand lodged inside the stem and can lead to damage or inefficiency.