Defensive measures

An important principle is that security must be built in depth - otherwise known as defense in depth. In this context, it may be helpful to think of security as a set of concentric rings, where the target is located at the center. Each ring represents a level of physical protection (perimeter fence, building shell, security case) but the number of rings and security resistance will vary relative to the risk. The spaces between the rings may represent other defensive measures such as closed-circuit television (CCTV), security lighting, intruder alarm systems, etc. 

In Chapter 3, the reaction system is discussed using the heat and mass balances, and interaction with the equipment. Scale-up affects both temperature and pressure profiles, which vary with types of reactor systems and sizes. Relevant test methods for scale-up and for process design are covered, including discussions on the methods as well as the relative advantages and disadvantages. Typical approaches for safe design and for defensive measures are presented. The theoretical and experimental subjects in Chapters 2 and 3 are illustrated by the use of examples. 

A measure is preventive if it prevents the occurrence of a runaway, a decomposition, or a hazardous secondary reaction. The system conditions remain close to operating conditions. Excessive increases in temperatures and/or pressures are avoided. Preventive measures include feed rate control systems, interlocks to prevent the reaction from starting unless sufficient diluent is present or the cooling system is working, and tests for the presence of catalysts or unwanted impurities. Preventive measures are always to be preferred over protective or mitigating (defensive) measures. 

The last defensive measure to control a runaway is to vent the gaseous and liquid products present in the system in a safe manner. The vent line may end in ... 

Defensive measures measures taken to reduce or mitigate the consequences of a runaway to an acceptable level. 

Defensive Measures Immunizations, good personal hygiene, physical conditioning, wearing a protective mask, and practicing good sanitation. 

Defensive Measures Wearing protective mask, practicing Standard Precautions with infected patients, and good personal hygiene. 

Defensive Measures Immunizations, good personal hygiene, physical conditioning, use of arthropod repellents, wearing protective mask, and practicing good sanitation. Utilize an insecticide as necessary to kill fleas on victims and their contacts if local flea and rodent population becomes infected, institute control measures. 

Medical Classification, Probable Form of Dissemination, Detection in the Field, Infective Dose, Incubation Time, Persistence, Personal Protection, Routes of Entry to the Body, Per-son-to-Person Transmissible, Duration of Illness, Potential Ability to Kill, Defensive Measures, Vaccines, Drugs Available, and Decontamination. In each case, for both Chemical and Biological agents, each agent will have guidelines laid out within the book. 

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