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1
Oklahoma Environmental Training Center
The Main Event
Vol. I, Issue 1 November 2011
Safety for water,
wastewater system
operators
By Bill Clark
Within the last year two con-struction
workers were killed in an
excavation cave-in. All preliminary
reports indicate they were working
in an excavation about 20 feet deep
without any cave-in protection.
Cave-ins can happen in seconds
without warning. There is usually
never any time to escape. Soil is
an extremely heavy material. A
cubic yard of soil (3 feet x 3 feet
x 3 feet), which contains 27 cubic
feet of material, may weigh more
than 2,700 pounds. That is nearly
one and a half tons (the equivalent
weight of a car) in a space less than
the size of the average office desk.
Furthermore, wet soil, rocky
soil or rock is usually heavier. The
human body cannot support such
heavy loads without being severely
injured. Let’s review OSHA regu-lations
that cover Trenching and
Excavation, 29 CFR, 1926.650,
651 and 652.
These rules are there to save your
life. Think about your family the
next time you’re thinking about
jumping into a trench without
cave-in protection even for a few
minutes.
2011 Calendar
November
Nov. 1-4: C Water Lab
Nov. 15-16: D Water
Nov. 17-18: D Wastewater
Nov. 29-Dec. 2: A/B Waste-water
Lab
December
Dec. 6-7: C Water Operator
Dec. 8-9: C Wastewater
Operator
Dec. 12: Disinfectant Byproduct
Dec. 13-14: D Water Operator
Dec. 15-16: D Wastewater
Operator
2012 Calendar
January
Jan. 3: Advanced Water
Operator Math
Jan. 9-12: A/B Water Operator
Jan. 23-24: D Water Operator
Jan. 23-26: A/B Water Lab
Jan. 25-26: D Wastewater
Operator
Jan. 31: Advanced Waste-water
Operator Math
Trenching and Excavation
Requirements
1. OSHA requirements state
that if the trench is 5 feet or
more in depth some type of
cave-in protection is absolute-ly
required.
2. A person designated as
qualified and competent to
recognize and evaluate haz-ards
must be present.
3. If the excavation is 20 feet
or more in depth a profes-sional
engineer is required to
evaluate the soil and determine
cave-in protection before any-one
enters the excavation, 29
CFR 1926.652 (b)(c).
OSHA Trenching and Excavation Requirements
OETC
2011-2012
Calendar
See OETC on Page 3
www.rscoetc.wordpress.com
Object Description
Description
| Title | 2011-11 Main Event 1 |
| Full text | 1 Oklahoma Environmental Training Center The Main Event Vol. I, Issue 1 November 2011 Safety for water, wastewater system operators By Bill Clark Within the last year two con-struction workers were killed in an excavation cave-in. All preliminary reports indicate they were working in an excavation about 20 feet deep without any cave-in protection. Cave-ins can happen in seconds without warning. There is usually never any time to escape. Soil is an extremely heavy material. A cubic yard of soil (3 feet x 3 feet x 3 feet), which contains 27 cubic feet of material, may weigh more than 2,700 pounds. That is nearly one and a half tons (the equivalent weight of a car) in a space less than the size of the average office desk. Furthermore, wet soil, rocky soil or rock is usually heavier. The human body cannot support such heavy loads without being severely injured. Let’s review OSHA regu-lations that cover Trenching and Excavation, 29 CFR, 1926.650, 651 and 652. These rules are there to save your life. Think about your family the next time you’re thinking about jumping into a trench without cave-in protection even for a few minutes. 2011 Calendar November Nov. 1-4: C Water Lab Nov. 15-16: D Water Nov. 17-18: D Wastewater Nov. 29-Dec. 2: A/B Waste-water Lab December Dec. 6-7: C Water Operator Dec. 8-9: C Wastewater Operator Dec. 12: Disinfectant Byproduct Dec. 13-14: D Water Operator Dec. 15-16: D Wastewater Operator 2012 Calendar January Jan. 3: Advanced Water Operator Math Jan. 9-12: A/B Water Operator Jan. 23-24: D Water Operator Jan. 23-26: A/B Water Lab Jan. 25-26: D Wastewater Operator Jan. 31: Advanced Waste-water Operator Math Trenching and Excavation Requirements 1. OSHA requirements state that if the trench is 5 feet or more in depth some type of cave-in protection is absolute-ly required. 2. A person designated as qualified and competent to recognize and evaluate haz-ards must be present. 3. If the excavation is 20 feet or more in depth a profes-sional engineer is required to evaluate the soil and determine cave-in protection before any-one enters the excavation, 29 CFR 1926.652 (b)(c). OSHA Trenching and Excavation Requirements OETC 2011-2012 Calendar See OETC on Page 3 www.rscoetc.wordpress.com |
| Date created | 2012-02-14 |
| Date modified | 2012-02-14 |
