Hazards Flashcards
Projection Hazards
Projections extend beyond adjacent surface.
Protrusions have potential to cause injury.
Projection Gauges
Large Gauge: impale, internal bruising/bleeding
Medium: penetrate eye socket, brain
Small: lacerations, punctures
Projections on suspended components
Test with .12”
any projection that fits inside is a potential
Determine path of travel
find projections exposed while swinging
Slides
Projections > .12” not allowed
Non-entanglement zone begins at bottom edge of slide and extends out and up, not under bed
Heights of transition platform must be 60”
No projections in this space that fit inside large projection gauge and extend perpendicular from initial surface > .12”
Accessible bolt
No more than 2 threads project project through nut
Accessibility test
Use large protrusion gauge
hold gauge sideways against bolt
if it makes contact w the curved surface of gauge, it’s accessible.
Not accessible bolt
More than 2 threads project through nut
S-hooks
Max gap is .04”
Closed end of lower loop may or project beyond boundary of upper loop
Use a feeler or gap gauge
Completely bounded rigid openings
Openings 3.5-9” are most concerning
Younger children at risk
Higher opening, greater risk
Test method:
Since smaller torso template passes through opening, it’s accessible.
Since largest head template doesn’t penetrate opening, it is a head entrapment hazard.
Completely bounded non-rigid openings
Similar tests to rigid opening, 50# of force is added
test method:
Hook pull gauage onto smaller torso probe
hold the probe in 1 hand, pull gauge in the other, apply 50 #s of force, push/pull the probe through the opening. If it passes thru, it’s accessible.
Repeat with larger torso probe and the pull gauge. if it gets stuck, it’s a head entrapment hazard.
Partially Bounded Openings
Preschool kids most at risk
Not all partially bounded openings are hazards:
sides of opening < 24” above protective surfacing
lower leg of opening is horizontal or pointed downward.
Test method:
Use fish probe
A portion determines if it’s accessible
If it’s accessible, then b portion is used to determine if it’s a neck entrapment.
Crush & Shear Hazard
Caused by openings created by movement
Gap between end of bridge & platform could be pinch hazard.
Gap at pivot point of rotating swing widens & narrows
Neoprene Rods for crush & shear
.19 (3/16)”_for roller slides to measure gaps between rollers
.30 (5/16)” for merry go rounds
.62 (5/8)” for all other crush & shear
Flexible Suspended Component
Suspended non-rigid cable must be:
at an angle Greater than 45 degrees from the horizontal
Above 84” high
Min 1” wide
Brightly colored
Handrail Height
22-38”
