The 4D Solution – Let it “Walk” is primarily about a publication I wrote with a colleague called “Seismic Scaffolding Concerns? Let it ‘Walk,” Nuclear Plant Journal, May-June 1990, ISSN: 0892-2055, in a small part is the result of the “Three Mile Island” accident on March 28 1979 and “Chernobyl” accident on April 26 1986 that changed the Nuclear industry operation’s.
In around 1980, concerns were raised over the practice of using temporary work platforms such as scaffolding erected near “Safe Shutdown Equipment” in a nuclear power plant. The problem is supporting this temporary scaffolding by securing against a seismic event by attaching that to either the containment building structure or adjacent components will have an undefined impact on these systems’ design basis and/or operations that potentially could result in a “Beyond Design Basis Accident”.
This 4D solution is about determining the relative response to a freestanding object(s) during an earthquake.
Great Hong Kong Typhoon – September 1937, typhoon formed a 500 mils diameter storm, east of the Luzon Island in the western Pacific with winds up to 125-149 mph and 30 ft. tile wave. This condition is where upper air motion develops, forming a circulation of air (a process called convection). This condition results in strong winds creating larger waves, sea level to tilt and low pressure raising the sea level. The typhoon and earthquake waves only different in the source of energy and transfer medium that is from strong wind versus sudden rise of the earth mantle (convection) and transmission through water versus soil medium, but strong energy develops in water. The magnitude of wave force very significantly, but is relevant to coefficient of static friction where 0 is free and 1 is fixed. Therefore, the surface coefficient will determine the maximum force applied and in regarded to dynamic friction when the FE is sliding will be the amount of kinetic energy loss. In a simpler term, when an FE exceeds the surface coefficient the distance traveled will be approximate equal and opposite minis the kinetic energy lost. There are two examples of this condition is a coffee cup sliding back and forward the motion of ship in rough seas and the other is the Kobe earthquake news security camera, strong and weak axis sliding and chair with very low coefficient of friction result lateral displacement.
- Note: On August 29, 1937 Lieutenant Commander H.G. Rickover has disembarked form the 102 U.S. Marines base in command of the Finch AM-9 a lapwing-class minesweeper on patrol on the Shanghai river, China and had repotted the on two Japanese destroyers firing on Woosung. However, Lt. Cdr. Rickover could have also been the on first expedition for the top secret Monarch organization and was heading out to the East China Sea under the cover of the Great Hong Kong Typhoon looking for Kong Skull Island.