Download Crack Sealer

Lesson Two
Crack Sealer
October 2006
c) There were only a few spots, but the burns were severe
iii. Wand became plugged and when it was unscrewed from the
hose, the material sprayed out
a) Employee’s arm was covered with hot material
b) Went to hospital for treatment
iv. For several hours the crack sealer was heated by an employee
a) Another employee attempted to screw the shoe on the
wand
1) Material shot out of the wand
2) Employee sustained first and second degree burns
on face, head and neck
v.
Wand valve and circulation valve were left open
a) Wand plugged up and when the plug released, it shot
several feet
1) The wand operator did not have time to get the
wand into the access port or shut off the wand
valve
2) Luckily no one was injured
vi. Wrong hose on wand
a) There are different temperature ratings for crack sealing
hoses
b) Both high and low temperature hoses are in use in ODOT
c) A low temperature hose was put on a high temperature
crack sealer by mistake
d) The hose broke down due to the high temperature at the
hose-to-wand connection and sprayed the wand operator
on the side of the face
e) Employee sustained second and third degree burns on
face and neck
Office of Training: Equipment Training Section
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