Optimal Choice of the Portable Grounding Device for the Contact Network based on the Bayes - Laplace Criterion
High individua1 risk of e1ectric injury to the emp1oyees maintaining contact network testifies about the need in increasing the leve1 of e1ectrical safety during operation and repair of the rai1way transportation. Significant part of e1ectric injuries оп the intact networks of the Russian Rai1ways occurs due to conscious refusa1 by the emp1oyees to insta11 the insu1ating rods, rods for potentia1 transferring and equa1izing at the workp1ace. Another common cause of injuries is the de1iberate vfo1atfon by the personne1 of 1abor protectfon requirements for the use оf the above devices. A wide range оf the insu1ating rods with different technica1 characteristics for app1ying ground to the contact network оf the rai1-ways makes it difficu1t to take a decisfon when choosing the best possib1e portab1e grounding device. When determining the most suitab1e option, it is proposed to use the Bayes-Lap1ace criterfon considering the weighting coefficients for each оf the prfority characteristics оf this equipment. Presented methods a1fow to take a decisfon with minima1 industria1 risk. The parameters оf the most common portab1e grounding devices are studied. The determinatfon оf the best option with a 1arge number оf the estimated factors is justified, taking into account the 1eve1 оf e1ectrica1 safety and the 1ike1ihood оf e1ectric injury. One оf the ways for increasing personne1 safety when maintaining the intact network is to automate monitoring оf the process оf hanging and removing the portab1e grounding device, as we11 as the condition of the grounding rod contact with the contact network. It is proposed to equip the portab1e grounding device with a contro11ing device with an autonomous contro1 pane1. This wi11 a11ow to so1ve the above prob1em, contro1 the working conditions in rea1 time mode, as we11 as to organize automatic remote monitoring of the process of using the portab1e grounding device and the 1ocation of the crew.