STUDY OF THE EFFECTIVENESS METHODS OF FIXING OF THE LIFELINE TO THE STRUCTURE

Abstract

Formulation of the problem. One of the elements of training for fire and rescue units is training exercises with a lifeline. The fire rescue rope is intended for use in rescue operations at height, firefighter self-rescue, work in confined spaces, organization of insurance when working in unsupported spaces and other rescue operations at height. For the effective use of a fire rescue rope, in each of the above cases, it is necessary to quickly and reliably fasten it to a structure (support). The personnel of fire and rescue units use 4 methods of securing a lifeline to a structure, which are regulated by law. These methods are effective, easy to knit and quite reliable. However, the standard time of the training exercise “fixing a lifeline to a structure”, which is a maximum of 5 seconds, is difficult, and the rush to perform it leads to incorrect tying and unreliability of the knot. It should be noted that the correctness and speed of this exercise will be influenced by the level of training of the personnel and the ambient temperature (winter/summer). Given the importance of correct and reliable rope anchoring to a structure (support), which will have a direct impact on the rescuer’s performance and the quality of professional duties, it is necessary to justify the value of the standard time for the training exercise “anchoring a rescue rope to a structure”. The purpose of the work. Establishing the dependence of the time of the exercise “fixing a lifeline to a structure” on the level of training of personnel and ambient temperature (winter/summer). Research methods. A practical study of the exercise “fixing a rescue rope to a structure” in 1, 2, 3 and 4 methods was conducted with students of the specialty “Fire Safety” of the Lviv State University of Life Safety. These studies were conducted in summer and winter with the same groups of students. Main results. Based on the research, it was found that when performing the exercise in the summer, 12 % of students of all groups did not perform the exercise, while 40 % of the total number performed the exercise on the verge of passing the standard. In winter, 56 % of applicants received unsatisfactory grades, and 27 % were on the verge of passing the standard. These percentage values indicate a significant effect of ambient temperature on the time of the training exercise “securing a lifeline to a structure”. In the summer, students fulfilled the standard by 45 %, and cadets were 54 % better than the trainees. In winter, students and cadets showed a level of training higher than that of trainees by 85 % and 149 %, respectively, which indicates a significant impact of the level of training. Conclusions. Based on the research, the dependence of the time of the exercise “fixing a rescue rope to a structure” on the level of training of personnel and ambient temperature (winter/summer) was established. particular, it was found that students and cadets fulfill the standard better than trainees by 45 % and 54 % in summer and 85 % and 149 % in winter. Based on the results of practical tests of students, the necessity of dividing the exercise into summer and winter periods is substantiated, since more than half of the students of all groups did not perform the exercise at air temperatures from 0 °C to +5 °C. The value of the normative time for the training exercise “fixing a rescue rope to a structure” for the training of personnel of fire and rescue units (units) is substantiated and proposed.