Indenting Test Result according to the Accelerated Aging Time Variation using Cable Indenting Mini-Robot

In the nuclear power plant, a lot of safety-related equipment including cables exist. All the safety-related equipment under the harsh environment should perform the equipment qualification (EQ) and condition monitoring until the end of the qualification life according to the IEEE std 323. Especially, condition monitoring of installed cables is very important job in order to extend qualified life of those cables. The monitoring program requires that the characteristics subject to aging deterioration be monitored at specific intervals and compared with specified acceptance criteria. The acceptance criteria shall be based on post-age-conditioning characteristics for the qualified cable. According to the Regulatory Guide 1.211 published in NRC, condition monitoring programs may include any appropriate technique, supplemented with walkdowns to look for visible signs of anomalies attributable to aging with particular emphasis on the identification of localized adverse environments or 'hot spots'. This paper introduces indenting test method using cable indenting mini-robot, one of the cable condition monitoring methods, and shows the test result according to the accelerated aging time variation