Power Engineering: November 2012

tool box talk

Toll box talk 16: Electrical Power Tool

Toll box talk 17: Working in Confined Spaces

Toll box talk 18: Working around Cranes

Toll box talk 19: Electrical Hazards

Toll box talk 20: Refuelling Equipment

Toll box talk 21: Battery maintenance do and don’t

Toll box talk 22: Do's and Don'ts of Car-battery Maintenance

Toll box talk 16: Electrical Power Tool

Care for:

· Electric power tools come in all shapes and sizes to do almost all sort of job

· Select the right tool .Know how to use it.

Do’s

· Check Broken or defective cords

· Check Defective terminal connections

· Check Defective plugs

· Check Defective or loose switches

· Check Brushes that spark excessively

· Check Before using the tool:

· Firmly secure the work

· Be sure you have firm footing

· Disconnect the tool when finished or when not using.

· Avoid working in that the vehicle is safe, legal and equipped for the journey

Don’ts

· Never use a tool unless the guards are in place and in working order.

· Don’t use a mobile ‘phone when working on power tool

· Never adjust the tool when it is plugged in

· Don’t forget to carry fist aid box, torch

· Don’t forget to test off switch

Common

· Use PPE (1. Helmet, 2.ear muff, 3.respirator, 5. Face shield, 6.Welding screen, 7. Hand gloves cotton, 8. Rubber gloves, 9. Apron, 10. Safety shoe, 11. Safety belt, 12. Full sleeve shirt)

· Don’t speed up more than 25 KM if using vehicle

· Don’t carry camera match box inside the refinery

· Carry permit and clearance of assigned job

· Avoid smoking or in designated place only

· Ensure housekeeping before and after maintenance

· Confirm exit or escape during emergency

· Know your assembly point during emergency

· Confirm MCP( manual call point for fire) nearby if any

· Fire call no........

· Stop working when hear siren

· Avoid more joint in cable/wire

· Confirm first aid box in nearby

· Don’t drink hydrant water

· Ensure Work permit/line clearance obtained and is available at site not at office

· Don’t forget to return line clearance/ permit when job is over

· Care for surrounding area for any hazard

· Use right tool for right job

· Don’t use dhoti/kurta/towel for uniform

(On back of page)

Present: Date:

Sr. Name Company Designation Sign.

Site supervisor/ Engineer

Toll box talk 17: Working in Confined Spaces

Care for:

Working in a confined space is a unique and serious hazard. A confined space is one that is large enough and arranged so that an employee can fully enter and work, has limited or restricted entry or exit

Do’s

Test for oxygen deficiency.

Take Sample for combustible gases

Get certification from gas safety inspector

Continually monitor for toxic substances (i.e. gases) as work progresses.

If space is unable to be vented, be use to provide proper respiration equipment.

If space can be vented, continually flush out the space with fresh air.

Be aware that spark producing equipment should never be used to flush out confined spaces.

Always be sure that someone watches work in a confined space outside of the space

All workers in a confined space must work with a lifeline attached outside of the space

All rescuers must be competent in the use of rescue equipment and self-contained breathing units.

Don’ts

Never rush to the aid of a fellow employee in a confined space.

Common

--See Tool box Talk No-16

(On back of page)

Present: Date:

Sr. Name Company Designation Sign.

Site supervisor/ Engineer

Toll box talk 18: Working around Cranes

Care for:

A crane is one of the most versatile and important pieces of equipment usually found on a construction job. It can be used to accomplish a lot of otherwise heavy lifting tasks. However, it can also be one the most dangerous since it can lift heavy loads over large areas of a project.

Do’s

Always be aware of the swing radius of the crane

Always wear a hard hat when there is a possibility of a load being overhead

Stay off of and away from the crane unless you are assigned to be on the crane

Don’ts

Never enter the swing radius of a crane

Never work under suspended loads. Besides the crane boom could fail.

Never ride the hooks. There are too many things that can go wrong you can’t control

Never walk under a boom, especially if it has a load on it.

Common

--See Tool box Talk No-016

(On back of page)

Present: Date:

Sr. Name Company Designation Sign.

Site supervisor/ Engineer

Toll box talk 19: Electrical Hazards

Care for:

Electrical hazards are doubly hazardous in that there is not only the chance of electrocution but also, there is the probability that any electric shock will cause a loss of consciousness that may well result in a fall of some sort.

Do’s

· Inspect tools and equipment for frayed cords and defective plugs before using them.

· Keep extension cords out of water when in use.

· Follow the company assured grounding/electrical protection program.

· Disconnect all electrical tools and cords when not in use.

· Consider all power lines “live” and avoid contact with them.

· Make sure all power supplies, circuit boxes and breaker boxes are properly marked to indicate their purpose.

· Use Earth leakage circuit breaker (ELCB) on all job sites.

· Never take electricity for granted, “It’s a killer.”

· Find the root cause:

Defective power tool.

Defective extension cords.

Overloading a switch or over-riding a by-pass.

Not grounding electrical equipment.

Coming in close contact with live electric lines.

Coming too close to high power lines with the power arching

Don’ts

· Never use a power tool that has had the ground plug removed

· Never stand in water and operate a power tool without proper (i.e., insulated) footwear.

Common

--See Tool box Talk No-016

(On back of page)

Present: Date:

Sr. Name Company Designation Sign.

Site supervisor/ Engineer

Toll box talk 20: Refuelling Equipment

Care for:

Refuelling equipment is a necessary part of each construction project. As such, it is important that this operation be conducted in as safe a manner as possible. It’s better to do it properly than to risk an explosion that could ruin or end your life and the life of those all around you.

Do’s

· Concentrate on the task to be performed.

· Keep a fire extinguisher within 25 feet and closer than 6 feet.

· If the equipment may accidentally move, chock the wheels.

· Always shut the engine off.

· If necessary, allow the engine to cool.

· Be sure both fuel dispensing tank and equipment are grounded.

· Always clean up any spills.

· Be sure it is clearly marked and keep the area neat at all times.

Don’ts

· Don’t refuel near an open flame or near a sparking situation.

· Never smoke during refuelling operations.

· Don’t spill the fuel. (Spilled fuel is a safety, health and environmental hazard).

· Don’t overfill the fuel tank. On hot days, allow for expansion.

· Don’t use mobile phone nearby refuelling area

Common

--See Tool box Talk No-016

(On back of page)

Present: Date:

Sr. Name Company Designation Sign.

Site supervisor/ Engineer

Toll box talk 21: Battery maintenance do and don’t

Care for:

· Improper fitment or loose fitment of battery on the battery compartment, rack or cradle leads to battery vibration thereby creates unstable voltage.

· Keep battery container sides and top surfaces always clean and neat

· Always top up with distilled water or de-mineralized water (IS1069)

· Electrolyte level to be maintained between the Maximum and Minimum markings on the battery container.

· Keep the Battery terminals clean and free from accumulation of dust

· Apply petroleum jelly or Vaseline on to the terminals and Bolt and Nuts to avoid corrosion

· Always use proper Ampere Hour battery and suitable dimensions recommended by the OEM’s

· Electrical gadgets should be fixed as per the OEM’s recommendation.

· Check the vehicle RR unit/alternator output within the specified limit voltage range 14.2 to 14.4 Volts

· Keep the battery cradle in your vehicle clean and free from rust and corrosion and ensure that the battery fixed firmly on to the cradle.

· Vent plugs holes should be free from dust blocking of vent hole leads to accumulation of hydrogen gas which lead to bursting of battery

· Use proper tools while fixing and removing battery

Don’t

· Don’t top up with ordinary tap water, well water or rain water because all has excess minerals will affect battery performance.

· Topping up above the maximum marking level will leads to overflow which will create corrosion to metal parts in your vehicle and weaken the electrolyte strength

· Never ADD Acid

· Never apply grease to terminals because it has lot of minerals and is flammable

· Don’t short the terminals of the battery for checking whether battery is good or bad.

· Rust or foreign particles deposits in the terminal will lead to voltage/current drop

· Never fix under Ampere Hour / Higher Ampere Hour battery

· Extra Electrical Fitments other than OEM specified leads to premature failure of your battery.

· If Rectifier Regulator unit/Alternator output is beyond the specified limit than recommended will create frequent topping up to distilled or de mineralized water and neglected topping up leads to battery premature failure.

Common

--See Tool box Talk No-016

(On back of page)

Present: Date:

Sr. Name Company Designation Sign.

Site supervisor/ Engineer

Toll box talk 22: Do's and Don'ts of Car-battery Maintenance

Care for:

Replacing a car battery can be a hassle so it is important to know how to keep this essential power source in top-notch condition.

Do

check the terminals where cables connect to be sure they are tight and corrosion-free.
If corrosion if present, have terminals cleaned by a professional. Periodically lubricate terminals with a dab of petroleum jelly to keep cables clean longer.
Make sure the battery is firmly secured to its mounting bracket.
An unsecured battery can become damaged and cause short circuits.
Check the fluid level unless it's a maintenance-free battery.
If the fluid is low, add distilled water. If there is no fluid visible, replace the battery.
Keep your battery case clean.
Dirt conducts electricity which can discharge the battery. Use a solution of baking soda dissolved in warm water to clean. Then wet the case and agitate with a nylon bristle to scrub the surface.
Batteries come in many different sizes.
When replacing a car battery make sure you choose the right size for your vehicle. Always disconnect the negative cable first and reconnect it last.

Don't

If your battery is frozen, do not charge it because it may explode.
One visual sign of a frozen battery is that the sides are bowed out. This condition is not repairable and you need to replace the battery.
If you need to charge the battery yourself, switch the charger to a low-charge setting.
Most chargers have this feature if not; have a professional to charge the battery.
Don't charge a dead battery with a car's alternator.
An alternator is not designed to function as a charger and it may be damaged or have a shortened life as a result.
Never lean over a battery when charging, testing or jump-starting the engine.
Also, don't disconnect battery cables while the engine is running (your battery acts as a filter). Don't let the battery get hot or the electrolyte boil while charging.
Don't let the battery get totally discharged.
Most car batteries get their power from lead cells submerged in electrolyte and these cells can be damaged when the battery is totally discharged.

Common

--See Tool box Talk No-016

(On back of page)

Present: Date:

Sr. Name Company Designation Sign.