1. Mechanical Safety
29 CFR
7/1/2018

2. 7/1/2018

3. Machine Sitting
Bearing Capacity of the soil (or) the foundation should be checked.
The proximity of hazard, such as nearby structures, overhead electric conductors etc. should be checked.
7/1/2018

4. Mechanical Hazards Mechanical hazards may occur in
Point of operation
All parts of the machine which move, such as:
Pulleys, belts, couplings, chains, cranks, gears, etc.
feed mechanisms and auxiliary parts of the machine
In-running nip points
7/1/2018

5. Rotating Parts
7/1/2018

6. Machine Guarding
All rotating & Moving parts of machines should be guarded
Guards should not be removed when the machine is ON.
Guard removed for maintenance should be replaced as soon as possible.
7/1/2018

7. Types of Guards
Fixed: A permanent part of the machine, these guards are typically made of sheet metal, screen, wire, bars, or plastic.
Interlocked: They control the action of the machine by automatically shutting it off if the interlocked guards are opened or removed.
Adjustable: These barriers can be manually adjusted to accommodate various sizes and shapes of material.
Self-adjusting: They open just enough to accept different sizes of stock, and then automatically return to the reset position.
7/1/2018

8. Access to Machineries
Safe and adequate means of access including hand rails shall be provided to all parts where a person may have to walk, climb or work.
It has to restrict unauthorized entry of workers.
7/1/2018

9. Access to Machineries
7/1/2018

10. Emergency Stop All the machineries must have an emergency stop switch.
It should be easily visible & well marked.
It should be easily reachable.
If operated, the machine must stop completely without any delay.
7/1/2018

11. Maintenance Procedures
Work-permit system shall be implemented
Maintenance shall be done only by authorized personnel
No repair & maintenance works while the machine in operation
Electric Power shall be shut off and relevant fuses removed.
Lock out / Tag out system shall be followed.
7/1/2018

12. Fire Prevention
A Stored Pressure type Dry Chemical Powder fire extinguisher shall be provided nearby all the machineries.
Extinguishers should be inspected & maintained
Operator to be trained on use of fire extinguisher
7/1/2018

13. Earth moving & Lifting Machinery
The Operator shall be adequately, protected from weather by providing a cabin.
The windows shall be provided with toughened safety glass and wipers.
Arrangement of the controls & Seat should permit safe operation of the machinery without undue fatigue and discomfort.
Seat Belt for the Operator to be provided, with guardrails and toe guards.
7/1/2018

14. Brakes & Controls
Hoisting motions shall be fitted with brakes and locks
Effective braking devices shall be provided on the wheels of the machinery.
Manual parking brake acting on the driving wheels shall also be provided.
7/1/2018

15. Operators & Drivers The Operators and Driver shall,
Be Authorized and competent
Possess valid license
Not wear loose clothing
Cover loose hair
Have clear view of the load & operational area
Act upon the instructions of the signaler
7/1/2018

16. Operators & Drivers The Operators and Driver shall
Not leave his cabin while the machine is running or the load is suspended
Switch off the electric power supply or stop the engine and apply appropriate brakes and locks before leaving the machine
Have good vision and undergo the medical test for vision once at least in every two years.
7/1/2018

17. Working near overhead power line
Avoid Working Overhead Power Line.
In unavoidable case the following minimum clearance shall be maintained between the machinery and the line.
11kv and below 1.40m
33 kv and below 3.60m
132 kv and below 4.70m
273 kv and below 5.70m
400 kv and below 6.50m
7/1/2018

18. Earth Moving Equipment
Every vehicle or earth moving equipment shall have the following fully functional:
Silencers;
Tail lights;
Power and hand brakes;
Reversing alarm; and
Search light for forward and backward movements
7/1/2018

19. Excavator Work permit in case of underground utility
Safe clearance overhead electrical Line.
Safe distance from excavations.
Swing Lock to prevent from accidental swinging during operation or transport.
7/1/2018

20. Dozer When moving uphill, the blade shall be kept low.
When running down the hill the bulldozer shall be in the lowest gear.
Blade shall not be used as brake except in case of emergency.
The blade suspension arrangement shall be inspected once a week.
7/1/2018

21. Batching Plant
7/1/2018

22. Batching Plant
The plant should be operated, only if all safety devices such as interlocks, guards, emergency stops, etc. are in place.
Before starting the plant, it shall be ensured that nobody is working on the plant.
Starting and stopping procedures, control devices / signals shall be followed according to the manufacturer’s guidelines.
No one shall be allowed to enter the danger area.
7/1/2018

23. Crusher Plant
7/1/2018

24. Crusher Plant Qualified Operators to be employed
All accesses and work platforms with guard rails.
There shall be efficient energy isolation system.
Stop blocks shall be provided to prevent vehicles approaching too near the plant.
Work-permit system shall be implemented for repair and maintenance of the plant.
No persons shall be allowed to enter dump hopper to clear blockages unless the feeder mechanism is stopped and the dumping signal is on “STOP”.
7/1/2018

25. Air Compressor
7/1/2018

26. Air Compressor
To be inspected regularly by qualified and trained employees.
All pipes, hoses, and fittings are to withstand the maximum pressure.
Air supply shutoff valves to be located (as near as possible) at the point-of-operation.
Air hoses to be kept free of grease and oil to reduce the possibility of deterioration (reduction in quality).
Hoses shall not be placed across ground, floors or aisles. When possible, air supply hoses shall be suspended overhead.
Compressed air shall not be used under any circumstances to clean dirt and dust from clothing or of a person’s skin.
7/1/2018

27. Air Compressor
Static electricity can be generated through the use of pneumatic tools. This type of equipment to be grounded.
Rotating & Moving parts, such as compressor flywheels, pulleys, and belts are to be guarded
Each air receiver to be equipped with at least one pressure gauge and safety valve of the proper design.
A safety (spring loaded) release valve to be installed to prevent the receiver from exceeding the maximum allowable working pressure.
Air receiver shall be identified with working pressure, capacity, test details, etc.
7/1/2018

28. Never Stand between the Pump and Transit Mixer

29. If the pump becomes energized everything that touches the pump is also energized

30. Use a spotter when the boom is in a confined area or near obstructions or wires.
Spotter should warn the operator if he is nearing trouble.
Two sets of eyes are better than one.

31. Never open a Pressurized Line
1. A plugged line may have maximum pump pressure inside.
2. Wait until the operator reverses the pump and tells you that it safe to open the pipe.

32. Watch for This
The truck can tip over if the soil gives away.

33. Cleaning with Compressed Air
Never open a pipe that has been pressurized with air.
Never use compressed air to clear a blockage. Use Ball Catcher

34. Environment diesel and other fuels; lubricants and hydraulic fluids;
Solvents/ chemicals;
hazardous waste;
contaminated water;
drums and/or tanks of unknown contents
7/1/2018

35. CONCLUSION
"One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man."
-- Elbert Hubbard

36. Any Queries ?