Quick Answer. The average spider can live anywhere from 1 to 3 years depending on its habitat and protection from predators. The garden spider, also known as an orb spider, lives about a year unless it finds a sheltered area away from extreme temperature changes, in which case it can live a few years. Keep Learning.
Protection against corrosion increases the life of metallic fuel tank and lines. Corrosion protection also avoids catastrophic results that could be caused by a release of product from the lines and tanks. Cathodic protection (CP) is an electrical method to avoid corrosion.
Transient voltage risk is limited, but still exists, due to the distances between equipment locations and other equipment located between it and the primary electrical supply. The IEC no longer specifies protection levels for CAT I instruments. Under UL 3111-1, a Cat I 150V rated instrument must be protected to 800V.