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David T. Butry 《Fire Technology》2009,45(1):117-143
A benefit–cost analysis is performed to measure the expected present value net benefits (PVNB) resulting from the installation
of a residential fire sprinkler system in a newly constructed, single-family house. The benefits and costs associated with
installation and use of a fire sprinkler system are compared across three prototypical single-family house types: colonial,
townhouse, and ranch. Each of the house types varies by design, size, and fire sprinkler affordability. Six fire sprinkler
system designs are evaluated: a multipurpose network system, three stand-alone systems, and two stand-alone systems equipped
with a backflow preventer. The sprinkler designs vary by installation cost (materials and labor cost) and required annual
maintenance, but all were designed to meet the NFPA 13D standard. The estimated benefits of fire sprinklers include reductions
in the following: the risk of civilian fatalities and injuries, homeowner insurance premiums, uninsured direct property losses,
and uninsured indirect costs. Results show that residential sprinkler systems not requiring expensive annual upkeep or maintenance
are economical. The expected PVNB in 2005 dollars is estimated as $2,967 for the colonial-style house, $3,099 for the townhouse,
and $4,166 for the ranch-style house, given installation of the lowest life-cycle cost sprinkler system in each of the house
types. A sensitivity analysis that measures the variability of the results to changes in the modeling assumptions confirms
the robustness of the baseline analysis.
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David T. ButryEmail: |
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规划人员在考虑配电网应具有良好的可靠性时,面临的主要挑战是如何处理可靠性与费用的关系。基于可靠性规划最终的问题就是要在定额资金的范围内获得尽可能高的供电可靠性,或以尽可能少的费用获得特定水平的供电可靠性。重点介绍了基于成本效益的可靠性改进方法(CERI),是能有效处理可靠性与费用关系的一种方法,该方法简单实用、无需建模和复杂计算。介绍了可靠性的投资分配的基本概念以及CERI的6个基本步骤,最后给出了一个应用示例。 相似文献
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