Transcript Handling of Hazardous Chemicals

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