New York State Concrete New York State Concrete Masonry AssociationMasonry Association

Electrical Safety in Electrical Safety in Concrete Block Plant Concrete Block Plant

Facilities Facilities November 6, November 6, 20082008Ralph Viola /Zappala Ralph Viola /Zappala

Block Block

ELECTRICAL SAFETY ELECTRICAL SAFETY OUTLINEOUTLINE

Electrical Service Power LinesElectrical Service Power Lines Electrical Panel ConfigurationElectrical Panel Configuration Equipment DisconnectsEquipment Disconnects Proper Electrical Troubleshooting Proper Electrical Troubleshooting

ProceduresProcedures Proper LOTO for Manufacturing Proper LOTO for Manufacturing

EquipmentEquipment Plant Electrical Housekeeping Plant Electrical Housekeeping

Electrical Service Power Electrical Service Power LinesLines The first place to visit to insure proper electrical safety The first place to visit to insure proper electrical safety

is where your power source comes into your site.is where your power source comes into your site.

Are the overhead power lines near the boom truck Are the overhead power lines near the boom truck loading area?loading area?Does the mantenace area have any electrical lines Does the mantenace area have any electrical lines overhead. overhead.

Are the overhead power lines near the aggregate Are the overhead power lines near the aggregate storage area where a dump trailer may come in storage area where a dump trailer may come in contact with them if driver fails to lower trailer ?contact with them if driver fails to lower trailer ?

Are the telephone poles guarded or protected from Are the telephone poles guarded or protected from being hit by trucks or forklifts? being hit by trucks or forklifts?

Are the underground service conduits properly Are the underground service conduits properly identified and protected from being dug up? identified and protected from being dug up?

SIGNAGESIGNAGE CAN PREVENT CAN PREVENT ACCIDENTSACCIDENTS

Electrical Panel BoardElectrical Panel Board

Electrical Panel Electrical Panel Board should be Board should be neat and orderlyneat and orderly

The area 36” in The area 36” in front of panel front of panel board area must board area must be kept clear. be kept clear.

Lockout/Tag out Lockout/Tag out procedure manual procedure manual

Electrical DisconnectsElectrical Disconnects Electrical Enclosures Electrical Enclosures

shall be properly shall be properly labeled. OSHA labeled. OSHA 1910.331910.33

The equipment or The equipment or machine identified.machine identified.

The energy and The energy and magnitude i.e.. 240 magnitude i.e.. 240 volts Three Phasevolts Three Phase

Lock out location and Lock out location and procedure. procedure.

Material Handling Elec. Material Handling Elec. PanelsPanels

Circuit Breaker LabelingCircuit Breaker Labeling

Circuit breaker Circuit breaker identification identification labeled both on labeled both on exterior and inside exterior and inside breaker panel doorbreaker panel door

Electrical Electrical TroubleshootingTroubleshooting

Must only be performed by trained Must only be performed by trained personnelpersonnel

Must provide the proper protective Must provide the proper protective equipmentequipment

Must have adequate knowledge of Must have adequate knowledge of electrical circuits and diagrams. electrical circuits and diagrams.

Must only be performed in a de-energized Must only be performed in a de-energized state, unless deemed impossible to state, unless deemed impossible to isolate the electrical hazard. Then isolate the electrical hazard. Then troubleshooting must be performed with troubleshooting must be performed with proper ARC Suit and equipment.proper ARC Suit and equipment.

The ARC SuitThe ARC Suit Must find proper arc Must find proper arc

suit size to fit the suit size to fit the “Troubleshooter”“Troubleshooter”

Flame Retardant Flame Retardant SuitSuit

Rubber Gloves w/ Rubber Gloves w/ protective leathersprotective leathers

Face Shield Face Shield Proper electrical Proper electrical

rubber tipped tools rubber tipped tools

Testing Line VoltageTesting Line Voltage Must have Must have

protective arc suit protective arc suit on with face shield on with face shield and rubber glovesand rubber gloves

VOLTAGE comes in VOLTAGE comes in on TOP of on TOP of disconnect switch , disconnect switch , this is called the this is called the LINELINE

Must check voltage Must check voltage across all three legs across all three legs 1-2, 2-3, 1-3 1-2, 2-3, 1-3

Testing Load VoltageTesting Load Voltage The LOAD side is on the The LOAD side is on the

bottom of Disconnect bottom of Disconnect Switch below the fuses. Switch below the fuses.

This is the electrical This is the electrical connection to the connection to the equipment.equipment.

When checking fuses When checking fuses always REMOVE from always REMOVE from disconnect switch then disconnect switch then check for continuity with check for continuity with tester. NO VOLTAGE tester. NO VOLTAGE PRESENT PRESENT

Arc Shield on DisconnectArc Shield on Disconnect

Plastic Arc Shield Plastic Arc Shield that we special that we special order for all our order for all our electrical electrical disconnectsdisconnects

Lockout/Tagout ProgramLockout/Tagout Program Purpose: This procedure establishes the Purpose: This procedure establishes the

minimum requirements for the lockout of minimum requirements for the lockout of energy isolating devices whenever energy isolating devices whenever maintenance or servicing is done on machines maintenance or servicing is done on machines or equipment. or equipment.

It shall be used to ensure that the machine or It shall be used to ensure that the machine or equipment is stopped, isolated from all equipment is stopped, isolated from all potentially hazardous energy sources and is potentially hazardous energy sources and is locked out before employees perform any locked out before employees perform any service or maintenance where the unexpected service or maintenance where the unexpected energiation or start-up of the machinery or energiation or start-up of the machinery or release of stored energy could cause injury or release of stored energy could cause injury or death. death.

Lockout/Tagout ProgramLockout/Tagout Program

Three most Three most importantimportant issues to address:issues to address:1)1) What type of energy needs to be controlled. What type of energy needs to be controlled.

Electrical, Hydraulic, pneumatic, fluids, etcElectrical, Hydraulic, pneumatic, fluids, etc

2)2) What method and sequence of energy isolation What method and sequence of energy isolation is to take place to insure employee safety.is to take place to insure employee safety.

Lockout Disconnect, shut off air Lockout Disconnect, shut off air valve, close hydraulic valve and lock out etc. valve, close hydraulic valve and lock out etc.

3) Proper training and compliance to this 3) Proper training and compliance to this program program

Lockout/Tag out StationLockout/Tag out Station Locks and keys are Locks and keys are

color codedcolor coded

ONLYONLY one key per one key per lock lock

OneOne key opens key opens OneOne locklock

Hang lock and hasp Hang lock and hasp at disconnects that at disconnects that are remote are remote

I Like Signs & Labels !I Like Signs & Labels !

Electrical HousekeepingElectrical Housekeeping

All outlets are 20 amp 120 volt GFI protectedAll outlets are 20 amp 120 volt GFI protected Space electrical outlets to minimize use of Space electrical outlets to minimize use of

extension cords. This minimizes the need for extension cords. This minimizes the need for extension cords.extension cords.

Place electrical outlets near manufacturing Place electrical outlets near manufacturing equipment for access to power during equipment for access to power during maintenance. maintenance.

Use cord reels, this keeps the cords from Use cord reels, this keeps the cords from getting cut and damaged during storage. getting cut and damaged during storage.

Inspect extension cords for cuts, frays and Inspect extension cords for cuts, frays and missing grounding prongs. missing grounding prongs.

Hand & Power Tool Hand & Power Tool SafetySafety

Visually inspect all electrical tools Visually inspect all electrical tools before use. Remove from service before use. Remove from service any tool with frayed cords, missing any tool with frayed cords, missing ground prongs, or cracked tool ground prongs, or cracked tool casings.casings.

Use only double insulated toolsUse only double insulated tools Avoid standing in wet areas when Avoid standing in wet areas when

using portable electrical power using portable electrical power tools.tools.

Thanks for your Thanks for your attention attention