Use only approved equipment. Use remote-controlled deadman valves on high-pressure
equipment (60 pounds or higher). Valves should be activated by the same air used for
blasting or spraying.
Conduct a hydrostatic test at least once, preferably twice, a year.
Test safety relief valves daily.
Use a conductive hose. Ground nozzles, tanks, and pressure equipment when in use. The
object being sprayed should also be grounded (Figures 1-19 and 1-20).
Figure 1-19. Grounding of tank and equipment
Figure 1-20. Grounding of blast nozzle
Store hoses in dry areas.