English to Spanish Tech/Engineering Engineering: Industrial

En una auditoría de seguridad de una planta de producción de productos lácteos aparecen ambos términos. "Utility area" como un área de la planta.

Utility area:
Three air compressors, two gas boilers and one transformer are operated on site. They are all in good condition... The operation of utilities is contracted to a specialist company.
...
A job hazard analysis has been performed for all the equipment, except for the utilities.