Choosing a cost effective safe product needs lots of patience. Perhaps RFID tags attached to the product packing can be easily tracked at the market for the right choice. Safety factors are carefully studied, experimented, and implemented in the product standards. The label on the product must bear safeguard stamps and be cross-checked by bar code or RFID.
Bearing responsibility for safety precautions is not the design engineer’s responsibility only, but also must be shared by users too. Some people consume medicines without reading safety instructions on the label. Medicines must be kept out of reach of children; safety standards are taken for granted. LPG cooking gas in cylinders or via pipe lines is used by all. Initially everyone takes enough precautions to see valves are closed before going to bed or being away from the house. Young children may play around gas valves if it is within their reach. A gas leak is not only poisonous, but also catches fire when the electrical switch is put on- or the automatic on/off switch by the refrigerator is activated.
LPG gas is of low density and when it leaks, it flows and spreads on the floor. That spark can cause havoc in entire buildings. These commonly used domestic appliances have a high risk. The consequences are devastating. Every building is not provided with efficient fire fighting provision. Hospitals are also not very safe. Oxygen cylinders are deadly devices when they leak. Oxygen has no smell. Detecting leaks is difficult. LPG gas is also used in hospitals. LPG has a pungent smell.
An alternate fossil fuel is CNG gas, which substitutes gasoline and diesel fuel. CNG is filled up in composite-bound metal cylinders with spherical ends. The gas fire protection is done by a thermally activated pressure relief valve. CNG cylinders are normally stored at 3600 psi at ambient temperature. Gas pressure is usually filled up to 1.25 times service pressure. Please note the gas pressure rises proportionately to temperature rise. In failure tests, fuel leaks from many points, but the tank does not burst.
A major disadvantage of CNG gas cylinders is the space problem for a fuel tank in gasoline powered vehicles. Compressed gas is lighter than liquid gasoline. Hence it takes more space than gasoline vehicles. This problem can be solved only by building CNG gas-run vehicles in the factory.
In the long run, people are used to various types of risks.
Please ignore this dangerous theme, and follow safety norms religiously.