Health and safety

1. Case Studies

2. Case – 1
• S/c engaged tipper, bearing Reg. No XX XX XXXX for
shifting L&T Formwork Materials from site to Yard.
• (The vehicle was certified by our P&M In charge and Safety
Engineer through PM 32 – B – Rev 00 and inspected on by
P&M In charge and SSC.)
• During Lunch hour, the driver parked the vehicle, in
between OB 1 and Cafeteria, by applying parking brake and
placing boulders in rear wheel as stoppers.
• After lunch the driver was advised to remove the vehicle
immediately to give way to the tractor accessing towards the
passage.
• Driver disengaged the parking brake and tried starting the
vehicle. As the vehicle was in slope, the vehicle began to
move before getting started.
• Since the Tipper was moving in the slope at a great speed,
the driver could not control the vehicle by brake and the
vehicle ran over victim, who was crossing the road.

3. Accident Spot

4. Case – 1
Direct Cause;
• Brake was not effective due to no air in air tank,
• Boulders placed as stop – end was not effective,
• Vehicle was parked in the slope,
• Panic,
Proximity Cause;
• Induction & screening wasn’t done,
• System of Identifying Un - authorized drivers was not
implemented strictly,

5. Case – 1
Precautionary Measure ;
• Photo identification gate pass is being issued to avoid
usage of someone else's gate pass to gain entry.
• The photo pass shall be issued strictly,
• A sticker shall be placed on the helmet indicating that
the person is inducted.
• This can be checked on a periodical basis by the
Safety Engineer.
• Periodical training on Defensive Driving technique,

6. Case – 2
• 145 mm dia Drilling completed upto 35 m and casing
of 150mm installed upto 10 m, (Sketch 1)
• Lowering of 5” PVC piping into the drilled borehole,
but not succeeded beyond 10 m depth, hence
withdrawn
• Decided to abandon the borehole and retrieve the
installed 150mm casing
• Extracted the casing by 4.0 m and arrangements
started for cutting the casing
• Workers got trapped suddenly into the sand near the
casing.
• 2 workers were trapped, 1st was trapped upto chest
level and 2nd at 2.35 m below the ground level.
• Rescue operation commenced, 1st worker was rescued
but 2nd worker couldn’t.

7. Case – 2
Name of the S/c: M/s Vijaya Bore Well
Name of the people engaged: Mr. Sawan Rao, Mr. G. Bhaskar, Mr. K. Chandar Rao, Mr. P. Venkat Ramana, Mr. S.
Pothu Raju, Mr. S. Sanyasi Rao, Mr. Dora Babu, Mr. K. Thavudu, Mr. Venu Gopal.
Date: 02.04.06
Purpose: Drilling bore upto 30M for water
sprinkling on the road to stop dust.
Location: West side of the Sub-station, north -
west corner of the industrial water tank
Drilling over 32 M.
v v
1.3 M
8" Top MS Casing Pipe
10 M length- 6"
dia casing pipe
Pipe pulled upto 4M above the ground level
4 M
4 M
2.35 M
Opeartor Mr. Sanyasi Rao
Ground Level

8. Case – 2
Direct Cause
• Cavity below the ground level - the person sunk down
Proximity Cause
• Failure to predict the hazard and severity,
• Due to this reason no controlling measures was also
not provided while person stands near the rig inst
near the bore hole
Precautionary Measures
• Structural platform made of MS plate 2 x 2 M size
touching 1 m radius periphery which will be rested on
"I" beam placed across.

9. Case – 2

10. Case – 2

11. Case – 3
• The victim had gone to the top of the ICE
MAKER,
• Removed the inspection cover, made up of
transparent cover,
• Bail out water by putting hand inside the ICE
MAKER.
• Part of his hand inside the ICEPLANT got
entangled and he could not remove his hands

12. Case – 3

13. Case – 3
Direct Cause
• No limit switches,
• Horseplay
Proximity Cause;
Precautionary Measures;
• Emergency switches
• Limit switches for inspection covers,

14. Case – 3

15. Case – 3

16. Case – 4
• The victim was engaged in fixing a post (size – H beam 244
x 252 x 11, 13.38 m long, 881 kgs) over the cantilever
beam at + 65.9 m elevation.
• The post was lifted (4 nos bolt) over the cantilever beam
(hand tightened).
• The post was already tied with guy rope (20 mm PP rope)
to the adjacent structural member for vertical support.
• After bolting he went to release the slings of winch rope.
• After releasing the sling, all of a sudden the post was
tilted one side twisting the cantilever beam where the post
was bolted.
• He was hanged on the safety belt along with the post
hitting against the adjacent beam where the post was
rested. He got his injury in his face.
• He was having safety helmet with chin strap on, safety
belt & shoe.

17. Case – 4
Direct Cause;
• Fastening was not sufficient to
maintain its balance under load &
hence got twisted,
• Failure to provide sufficient no of
Guy ropes,
Proximity Cause ;
• Safe work procedures not prepared,

18. Case – 4
Precautionary Measures
• Bracings of sufficient sizes and
number shall be provided for
unbalanced structures.
• Safe work procedures shall be
prepared for all activities.

19. To pulley
The beam on which the victim hit
(shown isolated for clarity)
Cantilever beam
Temporary ladder
Post

20. To pulley
Cantilever beam
Temporary ladder
Post
The beam on which the victim hit
(shown isolated for clarity)

21. To pulley
Cantilever beam
The beam on which the victim hit
(shown isolated for clarity)

22. To pulley
Cantilever beam
The beam on which the victim hit
(shown isolated for clarity)

23. To pulley
Cantilever beam
The beam on which the victim hit
(shown isolated for clarity)

24. To pulley
Cantilever beam
The beam on which the victim hit
(shown isolated for clarity)

25. To pulley
Cantilever beam
The beam on which the victim hit
(shown isolated for clarity)

26. To pulley
Cantilever beam
The beam on which the victim hit
(shown isolated for clarity)

27. To pulley
Cantilever beam
The beam on which the victim hit
(shown isolated for clarity)

28. To pulley
Cantilever beam

29. To pulley
Guy rope broken

30. To pulley
Guy rope broken

31. To pulley
Guy rope broken

32. Guy rope broken

33. Guy rope broken

34. Guy rope broken

35. Guy rope broken

36. Guy rope broken

37. Guy rope broken

38. Guy rope broken

39. Guy rope broken

40. Guy rope broken

41. Guy rope broken

42. Guy rope broken

43. Guy rope broken

44. Schematic view of the accident
Please press any key to continue

49. The unbalanced post fell towards
south held on the tightened base bolts
Twisted beam 365GR2
EL 65.9 mtrs
Guy – rope which got cut due to load

51. Thank You