DIFFICULTIES IN ESTABLISHING SAFEGUARDS:
Difficulties in establishing Safeguards:
· Incomplete knowledge of the engineering subject
· Refusal to face hard questions caused by lack of knowledge
· False sense of security
· e.g. Nuclear waste disposal problem
· Caution in stating probabilities of rare events
· Varying understanding of risk based on presentation of facts
· Risk assessments based on incorrect/unacceptable assumptions/data
· Only a few persons/groups participate in the exercise
· Some of the ways by which engineers may try to reduce risks.
· In all the areas of works, engineers should give top priority for product safety.
· They should believe that accidents are caused by dangerous conditions that can be corrected. Negligence and operator errors are not the principal causes of accidents.
· If a product is made safe, the initial costs need not be high if safety is built into a product from the beginning. It is the design changes done at a later date that are costly. Even then life cycle costs can be made lower for the redesigned or retrofitted product (for safety).
· If safety is not built into the original design, people can be hurt during testing stage itself.
· They should get out of the thinking that warnings about hazards are adequate and that insurance coverage is cheaper than planning for safety.
· All it takes to make a product safe is to have different perspective on the
design problem with emphasis on safety.
· Examples of Improved Safety
· Magnetic door catch introduced on refrigerators
· Prevent death by asphyxiation of children accidentally trapped inside
· The catch now permits the door to opened from inside easily
· Cheaper than older types of latches
· Dead-man Handle for Drivers in trains
· Semaphore signalling
· Volkswagen's car safety belt
· Attachment on the door so that belt automatically goes in place on Entry
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