EN_NR-10_Medidas_de_Controle_do_Risco_16h_MOD_II.pdf

Transcript

1. ELECTRICAL ELECTRICAL RISK RISK CONTROL CONTROL MEASURES MEASURES
2. WHAT IS THE PURPOSE OF NR- 10? Implement control measures and preventive systems
3. ELECTRICAL RISK CONTROL MEASURES
4. ELECTRICAL RISK CONTROL MEASURES People and animals must be protected against electric shocks, whether the risk is associated with accidental contact with a dangerous live part or with faults that could accidentally put a mass under voltage. (NBR – 5410/04 4.1.1)
5. Protective measures against the effects of electric shock can basically be summarized as: Protection against direct contact Protection against indirect contact ELECTRICAL RISK CONTROL MEASURES
6. ELECTRICAL RISK CONTROL MEASURES Direct contact Accidental contact with live energized parts
7. EFFECT OF ELECTRIC CURRENT ON THE HUMAN BODY Indirect contact Contact with parts of the equipment that were under voltage in a fault condition
8. PROTECTIVE MEASURES AGAINST DIRECT CONTACTS These are risk control measures impediment of electrical aiming at accidental contacts with the parties energized.
9. DE-ENERGIZATION
10. FUNCTIONAL GROUNDING (TN / TT / IT); PROTECTIVE; TEMPORARY
11. WHAT IS THE DIFFERENCE BETWEEN PROTECTIVE GROUNDING AND; FUNCTIONAL GROUNDING?
12. WHAT IS THIS TYPE OF GROUNDING?
13. FUNCTIONAL GROUNDING
14. EQUIPOTENTIALIZATION
15. LEAKAGE CURRENT DEVICES
16. Barriers and Enclosures
17. Blockages and Impediments
18. Obstacles and Buffers
19. ISOLATION OF LIVE PARTS
20. DOUBLE OR REINFORCED INSULATION
21. RISK ANALYSIS TECHNIQUES Risk analysis techniques are of fundamental importance for risk management, in order to avoid accidents or their repetition, as well as to avoid losses and damages.
22. RISK ANALYSIS TECHNIQUES Learn about the main risk analysis techniques used in risk management. Including the most important highlights of each technique.
23. RISK ANALYSIS TECHNIQUES Preliminary Risk Analysis consists of an early and detailed study of all phases of the work in order to detect possible problems that may occur during execution. Once possible accidents and problems have been detected, control and neutralization measures must be adopted. These measures must involve the entire team, creating a safe working environment together.
24. RISK ANALYSIS TECHNIQUES Fault Tree Analysis – FTA The AAF methodology consists of constructing a deductive logical process that, starting from a pre- defined undesirable event (accidental hypothesis), seeks its possible causes.
25. RISK ANALYSIS TECHNIQUES Fault Tree Analysis – FTA Fault Tree Analysis – FTA, which finds its best use in complex situations, which have a complex network of interrelationships of human resources, equipment, materials and environment, constituting a model in which probabilistic data can be applied to logical sequences.
26. RISK ANALYSIS TECHNIQUES Fault Tree Analysis – FTA
27. RISK ANALYSIS TECHNIQUES Hazard and Operability Study |Hazard and Operability Study (HAZOP) The term HAZOP comes from the English Hazard and Operability Study. Also known as “Hazard and Operability Study”, HAZOP is a technique designed to identify hazards that may cause accidents in different areas of the facility, as well as production losses due to operational discontinuity (SERPA, 2001a).
28. RISK ANALYSIS TECHNIQUES
29. Prepare an APR for Construction of a sectional switch cabinet support
30. COLLECTIVE PROTECTION EQUIPMENT – EPC
31. PERSONAL PROTECTIVE EQUIPMENT – PPE
32. PERSONAL PROTECTIVE EQUIPMENT – PPE
33. PROTECTIVE HELMET
34. EAR PROTECTOR
35. RUBBER INSULATING GLOVE
36. COVERING GLOVE
37. RUBBER INSULATING PROTECTIVE SLEEVE
38. SAFETY GLASSES
39. SAFETY FOOTWEAR
40. SAFETY LEG GUARD
41. SEAT BELT
42. CLOTHING (electric arc protection)
43. CONDUCTIVE CLOTHING
44. CONFINED ENVIRONMENTS
45. CONFINED ENVIRONMENTS Confined Space is any area not designed for continuous occupancy, which has limited means of entry and exit and in which ventilation existing is contaminants insufficient for dangerous and remove or oxygen deficiency/enrichment that may exist or develop.
47. NR-10 specifies the preventive measures to be adopted in controlling additional risks, including explosiveness. And that is what we are going to talk about today, classified areas. CLASSIFIED AREA
48. CLASSIFIED AREA According to NR-10 – item 10.4.2 – Measures must be adopted in the work and activities referred to preventive measures intended additional, especially in control as of high risks, confinement, explosiveness, humidity fields, electric and magnetic, dust, fauna and flora and other aggravating factors, adopting safety signs.
49. CLASSIFIED AREA ZONE 0: Area in which a potentially explosive gas/air mixture is present continuously or for long periods of time. ZONE 1: Area in which a potentially explosive gas/air mixture may be present during normal process operation. ZONE 2: Area in which a potentially explosive gas/air mixture is not normally present. If present, it will be for short periods of time.
50. CLASSIFIED AREA Regulatory standard 10 establishes that – item 10.9.5 – Services in electrical installations in classified areas may only be carried out with a work permit with formalized release, as established in item 10.5 or suppression of the risk agent that determines the classification of the area.
51. HUMIDITY
52. HUMIDITY We must consider that all work on energized equipment should only be started in good weather conditions, and work in rain, dense fog or wind is not permitted.
53. HUMIDITY Humidity is related to external influences and factors such as: Room temperature; Weather conditions; Presence of water; Mechanical requests.
54. 59 HUMIDITY NR-10 Safety in Electrical Installations and Services