Maximum probable property damage

Dow Fire and Explosion Index. The Dow Eire and Explosion Index (3) is a procedure usehil for determining the relative degree of hazard related to flammable and explosive materials. This Index form works essentially the same way as an income tax form. Penalties are provided for inventory, extended temperatures and pressures, reactivity, etc, and credits are appHed for fire protection systems, process control (qv), and material isolation. The complete procedure is capable of estimating a doUar amount for the maximum probable property damage and the business intermptionloss based on an empirical correlation provided with the Index. 

The net index is used with correlations provided to determine the maximum probable property damage and business intermption loss in the event... 

The goals of the F EI are to raise awareness of loss potential and identify ways to reduce potential severity and potential dollar loss in a cost-effective manner. TLe index number has significance as a comparison and in calculations to estimate the maximum probable property damage (MPPD). It also provides a method for measuring tbe effect of outage (plant being shut down) on the business. It is easy for users to get credible results with a small amount of training. 

An estimate of the replacement value of the equipment within the exposed area is then made, and combined with by the damage factor to estimate the Base maximum probable property damage (Base MPPD). 

The Maximum probable property damage (MPPD) is then calculated by multiplying the Base MPPD by a Credit control factor. The Loss control credit control factors, see Table 9.6, allow for the reduction in the potential loss given by the preventative and protective measures incorporated in the design. 

Base Maximum Probable Property Damage — (Base MPPD) [4x5] MM... 

The Dow F EI can be used to determine the consequences of an accident. This includes the maximum probable property damage (MPPD) and the maximum probable days outage (MPDO). 

The hazards identification procedures presented in chapter 10 include some aspects of risk assessment. The Dow F EI includes a calculation of the maximum probable property damage (MPPD) and the maximum probable days outage (MPDO). This is a form of consequences analysis. However, these numbers are obtained by some rather simple calculations involving published correlations. Hazard and operability (HAZOP) studies provide information on how a particular accident occurs. This is a form of incident identification. No probabilities or numbers are used with the typical HAZOP study, although the experience of the review committee is used to decide on an appropriate course of action. 

The replacement value of the property within the area of exposure represents the maximum probable property damage resulting from a fire or explosion in the process unit being evaluated. 

Actual Maximum Probable Property Damage - (Actual MPPD) [6 x 7) MM 1... 

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