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Facility Siting (CMA/API RP-752)
Nowhere under RMP/PSM is there greater potential to misallocate significant financial resources than in the management of Facility Siting. While most facilities have the "potential" for major events, such as explosions, fires, or toxic releases that could seriously affect the occupants of facility buildings, a risk-perspective is essential in determining where and what change is warranted.
Without risk-perspective, the danger is that resources are directed at high-consequence hypothetical events, and not necessarily at the high-risk events. Risk-informed decision-making takes into account both severity of consequence and likelihood of occurrence in determining whether measures should be taken to address hypothetical accidental scenarios.
Risk-based analysis also provides the means to
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assess which risk management options have the greatest risk-reduction efficacy (and these are not necessarily the most expensive options)
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determine the balance between accident prevention and accident mitigation planning, and
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perform cost-benefit analysis of risk-reduction alternatives.
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Unwin Company has diverse experience and in-depth technical expertise in facility siting.
We have developed streamlined methods, consistent with CMA/API Recommended Practice 752, that have been used by clients to support their risk-informed decision-making.
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Our methods are based on use of an analytical template that facilitates systematic evaluation of explosion sources and toxics/flammables release sources relative to vulnerable facility structures.
This template has been encoded as an Excel-based analysis tool.
Factors addressed in the template include
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Location/size distribution of release sources about the site
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Operational events that could results in releases or vessel challenges
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Vapor migration characteristics
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Relief system and other safety system design bases
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Phenomenology of:
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Potential for operator intervention
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Site distribution of structures/buildings
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Building structural characteristics.
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Our analysis system, which is consistent with applicable AIChE CCPS Guidelines, facilitates expeditious analysis of facility siting per RP-752 specifications, while incorporating a comprehensive consideration of the technical factors governing facility siting risk.
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