Subpart-U - OSHA Subpart U Blasting and the Use of...

OSHA Subpart U
Blasting and the Use of
Explosives

Blasting
•
Blasters cannot be substance
abusers (not under the “influence
of intoxicating liquors, narcotics,
or other dangerous drugs”)
•
1926.900 (c)

Blasting
Account for all explosives at all
times (locked magazine & keep
an inventory)
•
1926.900 (d)

Blasting
Face
Toe
Burden
Stemming

Delay Blasting
Firing of first delay

Firing of second delay
Delay Blasting

Firing of third delay
Delay Blasting

Above Ground Blasting
Conducted between sunup and sundown.
1926.900 (j)

Blasting
•
Use mats or other means of blast
containment when blasting near
buildings, congested areas, or
near railways, highways, etc.
•
1926.900 (h)

Blasting near overhead power
lines
•
Do not proceed until operators and/or
owners have been notified and only after
safe measures of control are taken
•
1926.900 (o)

Do no operate equipment within
50 feet of loaded holes and do
not drill holes within 50 feet of
holes with missfires

Loading Blast Holes
•
Load only those holes to be detonated in the
next blast
•
No drilling once the explosives are in
nearby holes
•
Don’t leave explosives unattended near the
blast site
•
1926.900 (d) & (g)