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| A
major hazard in chemical production and storage of chemicals is loss of thermal
control, which can lead to destruction and release of toxic substances. A systematic
risk analysis is essential in order to define the critical limits of temperature,
dosing, storage temperature etc. A systematic risk assessment must include the
following stages. |
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| Compilation
of basic data (physical and chemical properties, reactivity data, interactions
between chemicals, equipment data etc.) | |
| Define
system (boundaries of safe process conditions) |
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| Identify
hazards ( e.g. Check lists, Hazard and operability studies(HAZOP)) |
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| Assess
Risks (estimate severity and likelihood) | |
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Select risk reduction measures( e.g. technical, organizational, personnel) |
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| Remaining
risks | | |
Thermal process safety data of chemical reactions requires knowledge of the thermodynamics
and kinetic properties of both wanted and unwanted reactions. Thermal process
safety for physical operations (e.g. discharge, distillation) normally requires
the thermodynamics and kinetic properties of unwanted reactions. The
basic questions to be asked in understanding of thermal data can be summarized
as follows. e.g.
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| What
quantity of energy release is considered to be in itself dangerous? |
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| How
can the Tad' potential
adiabatic temperature increase, be used to determine a worst case scenario and
its consequences? | |
| How
can the TMRad' time to maximum rate adiabatic, can be used to determine
the probability? | |
| How
can the thermal data of the wanted and unwanted reactions be combined to develop
cooling failure scenario and its criticality? |
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| How
can decomposition reactions be characterized? |
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| How
does one determine if a decomposition reaction is autocatalytic? |
Chilworth Technology has a fully equipped laboratory to determine the thermal
data necessary for thermal process safety and storage of chemicals, evolved gas
collection and analysis, physical properties testing and transportation requirements
testing under the United Nations guidelines. The professionals at Chilworth have
many years of industrial experience and expertise in thermal process safety and
can provide total solutions to process and operational hazard analysis from compilation
of basic data to solving thermal process safety requirements.
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Chilworth Technology Private Limited Plot 3, Pocket B-2, Muskaan Complex,
Vasant Kunj, New Delhi-110 070, India. Tel.: 011-26136979 Fax: 011-26135979
E-mail:
info@chilworth.co.in Privacy
Policy | |