Resilience Engineering

Chapter 10

Structure for Management of Weak and Diffuse Signals

Lars Axelsson

After the mid-16^th century, samurai general Motonari Mohri had conquered a big part of Japan he feared that a crisis might arise in his country due to rivalry of local samurai leaders. He let his three sons band together, like a bundle of three arrows, to counter the threat. His reasoning was that one arrow can easily be broken. A bundle of three arrows cannot be broken.

Yamamori & Mito (1993)

SKI has, in a few recent events at Nuclear Power Plants (NPPs) in Sweden, found indications of weaknesses in the licensees’ ability to handle weak signals, or diffuse symptoms of problems, and an inability to take proper actions in a reasonable time.

Problem Awareness

Most of ...