A Manitoba construction site with no utility power needed both temporary power and heaters for microtunneling throughout the winter season. Extensive use of water and pumps during microtunneling make it crucial that the contractor avoid freezing hazards affecting the integrity of the jobsite.

During the winter, operations cease once temperatures reach around 0°C. Several of the fluids involved could be compromised, including water, drilling fluids, fuel and hydraulic oil.

Otherwise, operators have a limited window of keeping these fluids from freezing. Concerns include avoiding freezing of the water needed to maintain lubricity and remove cuttings from the borehole during drilling, as well as for spraying the equipment clean.