Management of Hazardous Chemicals chlorine

Management of Hazardous Chemicals
 

chlorine

Management of Haz.Chemicals

• Every day lot of chemicals are being handled
• Some chemicals are safe,some are toxic,corrosive and even poisonous

Management of Haz. Chemicals

• Chlorine and Toluene are   the topics of today’s discussion

Chlorine

• At normal pressure it is gas but under pressure it is liquid.
• Gaseous chlorine is yellow but liquid chlorine is amber color.
• It is pungent and suffocating.
• It is slightly soluble in water.
• Wet chlorine is very corrosive.

Chlorine

• Chlorine has a vapour density 2.5 so it is heavier than air.Aways remain at ground  level in case of leakage.

Hazard

• Short term  exposure limit is 1ppm
• Under this limit one can work safely up to 15 minutes with out any irritation,chronic tissue change and any other problem.
• Fatal dose is 1000ppm

Leakage

• Exact leakage point of chlorine can be detected by ammonia torch.
• Liquid chlorine leakage should be converted to gaseous leakage by turning the cylinder.
• One volume of liquid chlorine gives 460 volume of gaseous chlorine.
• Leakage should always be attended by using PPE

Leakage

• Leakage can be detected by electronic leakage censor device.
• Censor should be fixed near the chlorine tonners or chlorine distributing station.
• Censor should be connected through hooter .

Leakage
 

• Always approach the leak point against the air direction.
• In no case water to be sprayed on the chlorine leak.
• In case of large leak absorb the chlorine in caustic solution or soda solution or lime solution scrubber.

Health Hazard

• Chlorine is very corrosive and reacts with body moisture to form corrosive acid.
• Cause respiratory injury ranging from irritation to death.
• Up to 0.5ppm no long term affect.
• 1-3ppm can be recognised by nose and preventive can be taken immediately
• 100ppm can cause lethal damage
• 1000ppm danger to life.

Reactivity

• Chlorine has great affinity for Hydrogen
• Reacts with water to produce toxic and corrosive solution of HCl and HOCl
• Reacts with NH3 in the cold to produce extremely explosive Nitrogen Tri Chloride
• Reacts with many metals and nonmetals to form the salt.
• Reacts with Organic Compound to form Chlorinated derivative

Packing

• Liquid Chlorine is packed in100 kg Cylinder or 900 kg tonner.
• 90% filling capacity is used for packing.
  

Personnel Protective Equipments

• Self contained breathing apparatus.
• Positive pressure(blower) hose mask.
• Industrial canister type mask.
• Protective clothing.

First Aid

• Shift the affected person to open place.
• Apply oxygen immediately.
• Remove the contaminated clothing.
• Plenty of water to be used for eye and skin washing.
• Call a doctor if the victim is uncomfortable.

Employees Selection and Training 

• Chlorine leakage should be handled by trained personnel only.
• Training should be given to competent person only,
• Training and awareness programm to be conducted frequently.

Practice Being Adopted In Lanxess 

• Huge quantity of chlorine (8-10)tonnes per hour is used.
• This quantity can not be handled in tonners.
• Therefore chlorine is being transported through pipeline.
• Proper CSGV are fitted at various points.
• Chlorine measuring meter is fitted with analysis parameters.

Practice Being Adopted In Lanxess 

• Chlorine gas holder is installed with safety valve.
• Safety valves blows off if pressure goes above 5 kg/cm2.
• Vent of safety valve is connected with the caustic scrubber solution.
• Chlorine leakage detectors are fitted in all the required places and in 4 directions.

Practice Being Adopted In Lanxess 

• Chlorine detector hooters are also installed.
• All the detectors are connected to the monitors also.
• Chlorine monitoring records are kept for three months atleast.
• Caustic solution scrubber through suction blower is always ready to handle any leakage of chlorine.

Practice Being Adopted In Lanxess 

• Emergency kit is always kept ready.
• Kit mainly consists of gaskets,clamps,hoods,studs,tie rods,spanners,chains,pins and wooden pegs.
• Pipe lines are regularly checked for wall thickness and proper records are maintained

Practice Being Adopted In Lanxess 

• Training is regular practice in lanxess.
• In house Mock drills are done quarterly.
• Off sight mock drill is also conducted once in a year.
• Records of all the trainings are maintained and considered in annual appraisal.
• Annual health check is done by a competent doctor