Concrete pumpers general safety procedures

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Presentation Transcript

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