Confined Spaces - Workplace Safety and Health Council

14. List Of FiguresFigure 1: Number of workplace fatalities by type of incident, 2007 and 2008 09(National Statistics, Workplace Safety & Health 2008).Figure 2: Example of the risk management approach. 12Figure 3: The Fire Triangle. 15Figure 4: Examples of Confined Space warning signs. 24Figure 5: Types of Respiratory Protective Devices. 28Figure 6: Example of SCBA. 28Figure 7: More physical effort is required when using SCBA due to their 28weight and restrictiveness.Figure 8: Example of Air Purifying (Cartridge) Respirator. 29Figure 9: Test air at 3 or more elevations: top, mid-point and bottom. 35Figure 10: At least one person in a group working in the same vicinity of 36a confined space is equipped with a portable gas detector.Figure 11: A poisoned catalyst sensor. 37Figure 12: An example of sensitivity chart. 38Figure 13: Example of “function test”system. 41Figure 14: Example of forced ventilation using blower as a mechanical air 44moving device.Figure 15: Example of local exhaust ventilation. 45Figure 16: Example of a push-pull system. 46Figure 17: Example of axial-flow fan. 46Figure 18: Example of centrifugal-flow fan. 46Figure 19: Example of venturi eductor. 47Figure 20: Example of flexible non-collapsible ducting. 47Figure 21: An example of providing effective ventilation system by using 48a series of fans to move air through a long confined space.Figure 22: An example of providing effective ventilation system by 48blowing fresh air at the bottom of a deep confined space.Figure 23: An example of preventing short-circuiting in a confined space. 49Figure 24: An example of preventing re-circulating of exhaust air in a 49confined space.Figure 25: An example of providing effective ventilation system on how 50to remove lighter-than-air contaminants .Figure 26: An example of providing effective ventilation system on how 50to remove heavier-than-air contaminants.Figure 27: Example of an electrical lockout. 74Figure 28: Example of valves and piping lockout. 74Figure 29: Example of isolation by discounting/removing a spool piece 75or expansion joint from piping systems.Figure 30: Example of isolation by inserting a spade (blank) in piping between 75the flanges.Figure 31: Exploded chemical storage tank. 80Figure 32: Food reactor. 8388 89