Unsafe Conditions｜List of Hidden Dangers of Common Equipment & Facilities

Classification of Unsafe States

1. Lack of protective, insurance, signal and other devices or these devices are defective

(1) No Protection:

• • • No protective cover, no safety insurance device, no alarm device, no safety sign, no guardrail or damaged guardrail, (electrical) not grounded, poor insulation, no noise reduction system of fans, working in a dilapidated building, no car stops or barrier to prevent cars and so on.

(2) Improper Protection:

• • • The protective cover is not in the proper position; the protective device is improperly adjusted;
    • The excavation of the tunnel is improperly supported;
    • The explosion-proof device is improperly installed;
    • The safety distance for logging and skidding operations is not enough;
    • There are defects in the concealed place of blasting operation;
    • The live parts of electrical installations are exposed, etc.

2. Defects in Equipment, Facilities, Tools & Accessories

(1) Improper design and unsuitable structure for safety requirements:

• • • The access door blocks the line of sight; the brake device is defective;
    • The safety distance is not enough;
    • The barrier net is defective; the workpiece has sharp burrs;
    • The facilities have sharp chamfers, etc.

(2) Insufficient strength:

• • • Insufficient mechanical strength;
    • Insufficient insulation strength;
    • Ropes for lifting heavy objects do not meet safety requirements etc.

(3) The equipment is running in an abnormal state: the equipment is running with “sickness” or overloaded operation etc.

(4) Poor maintenance & adjustment: the equipment has been in disrepair and improper mai

3. Personal Protective Equipment (protective clothing, gloves, goggles and face shields, respiratory protective equipment, hearing protective equipment, safety belts, safety helmets, safety shoes, etc.) are missing or defective.

(1) There are no personal protective equipment or appliances;

(2) The protective equipment and appliances used did not meet the safety requirements.

4. The environment of the production (construction) site is not good

(1) Poor Lighting: Insufficient illumination; blurred vision because of smoke and dust in the work site; too strong light;

(2) Poor Ventilation: no ventilation; low efficiency of ventilation system; wind flow short circuit; blasting operation when power or wind is off; gas emission does not reach the safe concentration of blasting operation; gas exceeds the limit, etc.;

(3) Narrow workplace;

(4) The work site is messy: unsafe stacking of tools, products and materials, etc.;

(5) The configuration of traffic lines is unsafe;

(6) The design or configuration of the operation process is unsafe;

(7) Slippery ground: there is oil, ice and snow or other slippery liquids or objects on the ground;

(8) Unsafe storage method;

(9) Inappropriate temperature and humidity of the environment.

List of Hidden Dangers of Common Equipment & Facilities

1. There is no protective cover for the operating part of the mechanical equipment (wheel, shaft, gear, etc.);
2. There is protective cover for manual grinders;
3. The height of the railing is less than 1.05 meters or the strength is not enough;
4. The angle of the ladder is too steep, greater than 75°;
5. Lifting equipment limit failure (main and auxiliary hooks, protective doors, etc.);
6. The wear of the wire rope used exceeds the standard.
7. Lack of railings or covers on platforms, ditches, pits, holes, etc.
8. The rotating shaft head is missing the bushing;
9. The safety protection equipment is in an abnormal state or its inspection is insufficient;
10. Insulated tools are broken;
11. Fire extinguishers are missing lead seals;
12. The automatic fire extinguishing alarm system cannot operate normally;
13. The smoke exhaust and dust removal devices cannot function normally;
14. The ground is uneven and there are objects protruding from the ground;
15. Lack of stop devices at the end of the track, no stoppers or barriers installed to prevent “running cars”;
16. Electrical devices (motors, switches, transformers, etc.) lack grounding or zero connection;
17. Working in dangerous buildings;
18. The protective cover is missing or not in place;
19. The foundation of the protective cover is not strong;
20. Exposed live parts of electrical installations;
21. The operating safety distance is not enough
22. The workpiece has sharp burrs;
23. There is a sharp back shuttle on the facility;
24. Unsafe stacking of tools, products and materials;
25. Lack of water in the gas water seal;
26. The pipelines conveying flammable and combustible gases or liquids are not grounded, and there is no overlap between two sections of pipelines;
27. There is oil or other liquid on the ground;
28. The ground is covered with ice and snow;
29. There are other slippery objects on the ground;
30. The sheath of wires and cables is damaged
31. The high temperature items are too close to the operator;
32. The rotating equipment does not draw a warning line;
33. The workplace is placed in disorder, which may easily cause falls;
34. Toxic and harmful substances in the workplace exceed the standard;
35. There is no obvious mark on the operating table or operating switch;
36. The springboard laid by scaffolding etc. is not fixed and is in an active state;
37. Lack of protective, insurance, signal and other devices or these devices are defective
38. No protective cover;
39. No safety device;
40. No alarm device;
41. No safety sign;
42. No guardrail or broken guardrail;
43. Poor insulation;
44. No noise reduction system of the fan;
45. Improper protections;
46. Improper adjustment of the protective devices;
47. Improper explosion-proof devices;
48. Defects in equipment, facilities, tools and accessories;
49. Improper design and unsuitable structure for safety requirements;
50. Passage doors, walls, etc. block the line of sight;
51. The brake device is defective;
52. The safety distance is not enough;
53. The traffic barrier is defective;
54. Insufficient safety facilities;
55. Insufficient mechanical strength;
56. Insufficient insulation strength;
57. The rope for lifting heavy objects does not meet the safety requirements;
58. The device is running in an abnormal state;
59. The equipment is running with “illness”;
60. Overload operation;
61. Maintenance and adjustment failure;
62. Equipment in disrepair;
63. Uneven ground;
64. Improper maintenance and failure of equipment
65. Missing or defective safety shoes etc.
66. Poor lighting;
67. Insufficient illuminations;
68. Blurred vision because of smoke and dust in the work site;
69. Too strong light;
70. The gas concentration exceeds the standard
71. Messy work site;
72. The width of the fire exit is not enough;
73. Use constant voltage where safety voltage must be used

You May Like