Concrete pumpers general safety procedures

Information about Concrete pumpers general safety procedures

Published on February 29, 2008

Author: Wanderer

Source: authorstream.com

Content

Concrete Pumpers:  Concrete Pumpers General Safety Precautions Hazards of Cement/Concrete:  Hazards of Cement/Concrete Effects of Cement on skin on lungs eyes Weight of Concrete Concrete under pressure P.P.E.:  P.P.E. What is Concrete? A mixture of:  What is Concrete? A mixture of Cement Sand Gravel/stone/rock/aggregate Properties/Varieties of Concrete:  Properties/Varieties of Concrete Slump “Sack” Size of gravel/rock Types of Concrete Pumpers:  Types of Concrete Pumpers Boom - 17 to 55 meter models Trailer pumping into “hi-rise” construction “Shotcrete” Pressures in each system:  Pressures in each system Boom trucks Pumping into hi-rise Shotcrete Operation of Pumpers:  Operation of Pumpers Hopper Agitator Rock valve Water box Piping Clamps Whip hose Controls:  Controls Control of pumping operation Hard Wire Remote Radio Controlled Remote Panels on truck Operating Safely:  Operating Safely Establishing Responsibilities & Communications:  Establishing Responsibilities & Communications “Person In Charge” Flaggers Flaggers only flag no other duties! Ready-mix drivers Site survey before pumper arrives!:  Site survey before pumper arrives! Power lines - the #1 killer Pump operators must have 17 foot clearance, or must be de-energized or relocated Ground stability Sufficient space Paths-to-Ground:  Paths-to-Ground Which kind of power line is the worst hazard?:  Which kind of power line is the worst hazard? Transmission? Distribution? 7,200 volts Service drop? Need for Ground Stability:  Need for Ground Stability Weight of Concrete Pumper up to 60,000 pounds Weight of Redi-Mix Truck 65,000 pounds or more Ground Stability Considerations:  Ground Stability Considerations Soil type & compaction Sloping & set-back Proximity to excavation Evidence of cracking Weather Sufficient Space for Pumper:  Sufficient Space for Pumper Not a “pass through” area Ability to deploy outriggers Free of housekeeping hazards Away from overhead activities:  Away from overhead activities Welding Concrete finishing, etc Sufficient lighting?:  Sufficient lighting? During Winter months, most operations begin before dawn Sufficient Space for Redi-Mix Truck:  Sufficient Space for Redi-Mix Truck “Staging area” Clean-out area Removal of mud/gravel before returning to highway Turning radius of Redi-Mix Truck:  Turning radius of Redi-Mix Truck Importance of Communications Ahead of Time:  Importance of Communications Ahead of Time “Can you just drive it around the block?” Setting up the Concrete Pumper:  Setting up the Concrete Pumper Positioning the outriggers Forward Stability:  Forward Stability Outriggers rather than front tires Setting up the Concrete Pumper:  Setting up the Concrete Pumper Positioning the outriggers Schwing v/ Putzmeister specifications Setting up the Concrete Pumper:  Setting up the Concrete Pumper Outrigger footings Setting up the Concrete Pumper:  Setting up the Concrete Pumper Cribbing Sidewalks & driveways are not reliable:  Sidewalks & driveways are not reliable Setting up the Concrete Pumper:  Setting up the Concrete Pumper Hose size & selection Size of aggregate Yards per hour Inspection of Clamps:  Inspection of Clamps General condition Pins Cracks When good clamps go bad…:  When good clamps go bad… Hose Inspection:  Hose Inspection Evidence of wear Kinks Setting up the Concrete Pumper:  Setting up the Concrete Pumper Protecting workers from blow-outs Setting up the Concrete Pumper:  Setting up the Concrete Pumper Keeping out “sightseers” Setting up the Concrete Pumper:  Setting up the Concrete Pumper One more check for power lines Backing in the Redi-Mix Truck:  Backing in the Redi-Mix Truck Designated “spotter” Ensures pump operator & others are clear Stays in sight of driver’s mirrors Backing in the Redi-Mix Truck:  Backing in the Redi-Mix Truck Driver must stop when looses sight of spotter! Area between the Redi-Mix Truck & Concrete Pumper:  Area between the Redi-Mix Truck & Concrete Pumper No sightseers! Where Redi-Mix Driver should stand:  Where Redi-Mix Driver should stand Needs to use controls Needs to see level in hopper Must not be exposed to “back burping” Communications - Between Driver and Pump Operator:  Communications - Between Driver and Pump Operator Driver controls hopper level Communications - Between Pump Operator & Placing Crew:  Communications - Between Pump Operator & Placing Crew Air in the Lines! the hazard::  Air in the Lines! the hazard: Explosive discharge Air in the Lines! How it gets there:  Air in the Lines! How it gets there Hopper level falls too low Air gets in the system Concrete comes in after it:  Concrete comes in after it A highly compressed pocket of air is traveling through the system! Air in the Lines! Why communications are vital:  Air in the Lines! Why communications are vital Driver needs to know where emergency stop is Everyone needs to know what the horn means! Plugs in the system the hazard:  Plugs in the system the hazard Quick build-up in pressure Blow-out of clamps/hoses Plugs in the system:  Plugs in the system Reduction in piping diameter Aggregate too large/piping too small Concrete not properly mixed Poorly cleaned hoses Debris from redi-mix truck Plugs in the system:  Plugs in the system

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