IED Guide

A handy reference guide for different types of IED (improvised explosive devices) is available by clicking on the IED icon always displayed at the top of the main screen.

The guide provides sample images of different sized devices, the estimated mass of explosive they could contain, the safe standoff distance for outside or if inside a building if the device is detonated.

NFPA 704 Hazard Classification System

The NFPA 704 Hazmat Diamond is a commonly used labeling system in most fixed facilities that store or use hazardous chemicals, but some responders may not be familiar with all the symbols used on the hazmat diamond and the definitions for all the levels in each quadrant.

The NFPA 704 Hazmat Diamond reference guide is provided for instant access to review the meaning of the NFPA 704, Standard System for the Identification of the Fire Hazards of Materials.The information can be viewed at full screen to provide the viewer with explanations for each category.

Gamma Dose Calculation

When a radioactive isotope is spilled decisions need to be made for safe standoff distances for personnel and public till the spilled material is properly removed.  The Gamma Dose Calculator allows the selection of the isotope and the activity.  It will then calculate any of three values (time of exposure, gamma dose received or distance from the source) if the other two values are provided.

Fireball Calculator for Unconfined Vapor Cloud Explosions

When flammable liquids or vapors are released and form a vapor cloud, an ignition source can cause detonation, which in turn can generate a blast wave similar to that created by explosives and a significant release of radiant heat which can cause burns to personnel with unprotected skin.  The Fireball Calculator tool allows the First Responder to select the flammable material, the maximum amount of material involved, and specify overpressure and heat injury Levels of Concern.  The Fireball Calculator tool will calculate a standoff distance based on the input values and the selected flammable material.

Fallout Radiation Dose Calculator

If response personnel need to enter a radioactive fallout contaminated area after detonation of a nuclear device, the Fallout Radiation Dose Calculator based on a measured reference radiation level and a known entry time can provide estimates of: (1) the dose received for a certain duration of exposure or (2) how long it takes to receive a specified dose.

Nuclear Detonation Calculator

Planning for, training for, and responding to the consequences of a nuclear device detonation requires estimates of the different types of damage or injuries that can occur and how far from “ground zero” those injuries will extend.  The Nuclear Detonation Calculator allows estimation by various methods of the yield of a nuclear device and specification of different damage thresholds for heat injuries, blast wave (overpressure), and radiation dose received.  The estimated distance for each type of damage are displayed plus distances for retinal burns (day and night).

Integrated Mapping Tool (Windows version only)

The PEAC-WMD 2007 for Windows application provides computational tools that allow the First Responder to develop safe standoff distances or exclusion zones for different types of incidents.  The integrated mapping tool will display these specific polygons on the appropriate street map automatically for the user.  Some examples shown are for a chlorine release from a railcar, an unconfined vapor cloud explosion for a spilled drum of acetone, and the estimated results for detonation of a 1 kiloton nuclear device.

This example is for a Chlorine tanker with a 2 inch hole releasing liquid.  The integrated plume model calculates an exclusion zone, which is displayed to the proper scale and oriented to the user provided wind direction on the integrated street mapping application. 

This example is for an unconfined vapor cloud explosion of Acetone spilled from a drum size container.  The Fireball Calculator provides standoff distances for the overpressure effects and radiant heat injuries.

This example is for a small (1 kiloton) fission device detonation and calculation of distances for specified blast effects, radiant heat injuries and radiation dose received.

Latest release of PEAC-WMD 2007 (version 5.6) now includes in the Explosion Calculator the computation of standoff distances for the hazardous fragmentation threat caused by shrapnel or projectiles being thrown from the blast. The fragmentation calculations conform to the US NAVY EOD (Explosive Ordinance Disposal) algorithms and guidelines. This example is for 100 pounds of TNT with an overpressure value of 0.74 psi specified for the blast standoff distance, the standoff distance for the hazardous fragmentation threat is based on the TNT equivalence of the explosive.