Safety Metrics for Different Parts of a Life Cycle: A Review
AIChE Spring Meeting and Global Congress on Process Safety
2015
2015 AIChE Spring Meeting and 11th Global Congress on Process Safety
Global Congress on Process Safety
Poster Session
Monday, April 27, 2015 - 5:00pm to 7:00pm
Safety Metrics for different parts of a life
cycle: A Review Nitin Roy1,3, Dina
Tarek Moussa2, Samina Rahmani1,3, Fadwa T. Eljack[*]2, Mahmoud
El-Halwagi1 and Sam Mannan1,3
in process industries needs to take quick decisions about the project proposals
and process alternatives. Decisions have to be taken at different parts of a
life cycle like process, storage, transportation etc. Often changing one part
of the life cycle can create new hazards or increase the magnitude of the existing
hazards in other part of the life cycle. This comes from the fact that the
hazards in a facility are not individualistic rather interdependent on each
other. We need to take decisions based on the whole of the life cycle. Safety
metrics help in this process in providing comparable numbers. A huge
number of methodologies are currently available to measure how safe the
facility is. This paper focuses on categorizing them according to different
characteristics, such as applications and methodology of evaluation. Different
part of life cycle has different safety measurement techniques. A life cycle of
a product starts from its raw materials and ends when it gets disposed. It goes
through three different parts of the supply chain, the transportation, process
facilities, and the storage. Each part has different routes that a supply chain
could follow. And every part of the supply chain has some or the other safety
issues. For comparison of different routes a product could follow in a supply
chain or the inventory that could be used, can be assessed by different safety
metrics. These metrics have different methodologies and different inputs and
outputs. Metrics can also be classified based on the design phase of project
they are applied, i.e. the level of detail it talked to evaluate the rankings. Categorizing
them based on these classification would help us have a better understanding of
the application of the metrics based on the situation we are assessing. By
understanding these metrics and their applications we can comment on the
applicability, reliability and accuracy of the indices. Some of these indices
like DOW fire & explosion index has been widely used to assess the safety
of the facility. The paper will discuss about these indices in detail that were
found to be very elaborate and widely acclaimed. Important metrics for each
part of the life cycle will be considered. Finally,
different databases will be discussed which has already been developed or which
could be developed for assessing the safety indices using the methodologies
discussed above. An overall birdÕs eye view picture will be given for the
metrics, with some critical comments about its usability.
cycle: A Review Nitin Roy1,3, Dina
Tarek Moussa2, Samina Rahmani1,3, Fadwa T. Eljack[*]2, Mahmoud
El-Halwagi1 and Sam Mannan1,3
1 Artie McFerrin Department of Chemical
Engineering, Texas A&M University System, College Station, Texas
77843-3122, USA
2 Department of
Chemical Engineering, College of Engineering, Qatar University
3 Mary Kay OÕConnor Process Safety Center, Texas
A&M University System, College Station, Texas 77843-3122, USA
Management
in process industries needs to take quick decisions about the project proposals
and process alternatives. Decisions have to be taken at different parts of a
life cycle like process, storage, transportation etc. Often changing one part
of the life cycle can create new hazards or increase the magnitude of the existing
hazards in other part of the life cycle. This comes from the fact that the
hazards in a facility are not individualistic rather interdependent on each
other. We need to take decisions based on the whole of the life cycle. Safety
metrics help in this process in providing comparable numbers. A huge
number of methodologies are currently available to measure how safe the
facility is. This paper focuses on categorizing them according to different
characteristics, such as applications and methodology of evaluation. Different
part of life cycle has different safety measurement techniques. A life cycle of
a product starts from its raw materials and ends when it gets disposed. It goes
through three different parts of the supply chain, the transportation, process
facilities, and the storage. Each part has different routes that a supply chain
could follow. And every part of the supply chain has some or the other safety
issues. For comparison of different routes a product could follow in a supply
chain or the inventory that could be used, can be assessed by different safety
metrics. These metrics have different methodologies and different inputs and
outputs. Metrics can also be classified based on the design phase of project
they are applied, i.e. the level of detail it talked to evaluate the rankings. Categorizing
them based on these classification would help us have a better understanding of
the application of the metrics based on the situation we are assessing. By
understanding these metrics and their applications we can comment on the
applicability, reliability and accuracy of the indices. Some of these indices
like DOW fire & explosion index has been widely used to assess the safety
of the facility. The paper will discuss about these indices in detail that were
found to be very elaborate and widely acclaimed. Important metrics for each
part of the life cycle will be considered. Finally,
different databases will be discussed which has already been developed or which
could be developed for assessing the safety indices using the methodologies
discussed above. An overall birdÕs eye view picture will be given for the
metrics, with some critical comments about its usability.