2011-11 Main Event 1 |
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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
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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 |