GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 1 SAFETY & HEALTH IN CHEMICAL INDUSTRY An outline of various facets of safety and health in a chemical.

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Presentation transcript:

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 1 SAFETY & HEALTH IN CHEMICAL INDUSTRY An outline of various facets of safety and health in a chemical industry

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 2 Hazardous chemical reactions Hazardous Unit Operations Entry into confined spaces RISK OF ACCIDENTS AND / OR HARMFUL EXPOSURES Dangerous materials Pressure Vessels Flammable gases, vapour and dust hazards Working with Pipelines Plant alteration Sampling & Gauging Corrosion

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 3 Dangerous Materials 1.Explosives 2.Gases 3.Inflammable Liquids 4.Inflammable Solids 5.Oxidising substances 6.Toxic and Infectious substances 7.Radio Active Substances 8.Corrosive Substances 9.Miscellaneous Dangerous Substances

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 4 HAZARDS OF PRESSURE VESSELS LEAKAGE OR BURSTING OF PRESSURE VESSELS Design defects Failure of relief systemsLack of hydraulic testing Attempt of pneumatic testing Lack of routine inspections Corrosion of vessels Lack of N.D. Tests Lack of proper instrume ntation or instrume ntation failure

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 5 HAZARDOUS CHEMICAL REACTIONS UNDERSTANDING ABOUT THE BEHAVIORS OF REACTIONS AND ADOPTING PRECAUTIONARY AND EMERGENCY MEASURES. Reaction rate Temperature Reaction rate Temperature Normal Arhenious equation Anomaly 1 Anomaly 2

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 6 HAZARDS OF UNIT OPERATIONS UNDERSTANDING THE HAZARDS INHERENT IN EACH UNIT OPERATION AND ADOPTING PRECAUTIONARY AND EMERGENCY MEASURES. Heat TransferSurface Fouling & Leakage, Miscalculation in scaling, Mixing of fluids etc. Size ReductionDust Explosions, Dust release, etc. EXAMPLES

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 7 FLAMMABLE GASES, VAPOURS AND DUST HAZARDS

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 8 Identification of potential areas, where possibility of flammable mixture are possible. Efforts to avoid hazardous mixtures, by inert gas purging and other methods. Declaring hazard zones and providing flame proof electrical fittings and equipments. Providing Explosion Vents in spaces with possibility of air-vapour mixtures. Explosimeter testing. Providing adequate fire control devices. Providing arrangements to avoid static sparks. Etc.

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 9 HEALTH HAZARDS Identification of potential health hazards. Assessment of levels of physical and chemical health hazards. Control of hazards by various techniques. Adequate awareness among the workers. Periodic medical examination of the workers. Personal protection for occasional exposures. Proper hygiene and decontamination facilities. Etc.

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 10 HAZARDS DUE TO CORROSION Weakening and falling of structures and sheds. Falling of workers from height due to breaking of raised platforms, hand rails, toe boards, stairs and ladders. Spills and toxic releases from pipelines due to corrosion. Leakages and bursting of vessels due to corrosion. Corrosion monitoring and control. Testing and inspection of vessels and structures to ensure safety

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 11 ENTRY INTO CONFINED SPACES Oxygen Difficiency Toxic Contamination Flammable Environment Combusti- ble substances Failure to escape on emergency Difficulty in welfare monitoring Lack of Ventilation Possibility of Toxic gas generation during the work. Possibility of Electrocution s through electric equipments

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 12 Safety While Entry into Confined Spaces Thorough cleaning and purging before hot work. Safety belt with one end outside. Life line to monitor welfare. On going ventilation. A person to watch the welfare. Low voltage electric appliances. Self contained breathing apparatus. Environmental monitoring for oxygen, toxic gases and flammable gases before entry. Pipeline isolation before entry Electric isolation before entry. Proper ladder for entry.

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 13 F ir e

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 14 SAFETY IN USE OF PIPELINES Hazards due to inadequate Identification of Pipelines. Hazards due to leakages and bursting of pipelines. Hazards due to collision of vehicles with pipelines. Hazards due to improper materials of construction of pipelines. Hazards while breaking of pipelines. Hazards while tapping of pipelines. Bursting due to thermal expansion of liquids in the pipelines. Bursting of pipelines due to freezing of pipelines. Accumulation of condensates in the pipelines. Etc.

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 15 PLANT ALTERATIONS AND MODIFICATIONS Alteration in plant, equipment, component, process, operating procedure, etc.due to some difficulty. Followed by failure in some unforeseen aspect of the system. Design intention of each and every component of the system should be well understood by every person concerned. If any alteration is inevitable, Refer the matter to the designers. Carry out HAZOP study by expert team. Pass it through plant modification approval committee.

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 16 SAMPLING AND GAUGING Exposures of gases, vapours and dust while collecting samples. Approaching odd locations. Splashes and spillages while collecting samples. Exposures due to breaking of sight glasses nd glass level indicators. Dip gauging of flammable liquids. Dip gauging of corrosive liquids.

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 17 HAARDS DUE TO INSTUMENT FAILURES Absence of fail safety instruments. Lack of interlocks and trip systems. Human failures in manual and semi automatic operations. Need for safety analysis of the instrumentation systems.

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 18 TOTAL SAFETY & HEALTH MANAGEMENT Selection of Proper Plant Site. Safe Design. Process Control Instrumentation. Management of pressure vessels. Proper Testing and Inspection. Proper log books and records. Barricading the sensitive areas. Work Permit system. Proper grounding and bonding. Use of flame arresters on vents. Use of flame proof fittings. Preventive maintenance schedule. Proper PPE. Availability of MSDS. Safety Awareness. First Aid Facility. Good Fire fighting system. Adherence to safety statutes. Emergency planning and preparedness.Good industrial hygiene. Inernal and expernal safety audits.

GOPAL DUTT PANDEY JOINT SECRETARY, NSC UP CHAPTER 19 THANK YOU