Improving maintenance and preventive overhaul programs for open pit dump trucks at SUEK-Khakassia

The study aimed at performance improvement of BelAZ dump trucks at SUEKKhakassia’s Chernogorsk open pit mine uses the test data of the machine reliability. The workflow of calculations using the mine information system data is discussed. The operating efficiency criteria of dump trucks are the interval between failures, the down time due to maintenance and repair and the ratio of standard to actual down times per 100 machine hours. The work program for 1 dump truck per year is calculated for BelAZ dump trucks 7513 and 7530 using the standards from 2013 Provisions for Maintenance, Diagnostics and Repair of BelAZ dump trucks. For BelAZ trucks 7513 and 7530 operated in frigid climate of the Republic of Khakassia at Chernogorsk open pit mine, the standard specific down time in preventive overhaul, maintenance and repair is recommended to be not longer than 14–15 hours/100 machine hours. It is proposed to improve the existing routine maintenance schedule for BelAZ dump trucks by adding the primary maintenance activities (M-1, M-2, M-3) with extra preventive measures called the precaution steps. For BelAZ dump trucks 7513 and 7530, it is suggested to add three and nine precaution steps, respectively. All extra precaution steps should be accomplished according to a certain developed plan together with the primary maintenance. The effect of the recommendations and precaution steps introduced into production at SUEK-Khakassia’s Chernogorsk open pit mine is evaluated in terms of BelAZ dump truck 75306. In 2018 the technical preparedness factor made 0.89. This value can increase to 0.91 after introduction of the proposed recommendations.

Borisenko A. N., Oleinikov A. V., Semenov M. N. Improving maintenance and preventive overhaul programs for open pit dump trucks at SUEK-Khakassia. MIAB. Mining Inf. Anal. Bull. 2021;(6):104-119. [In Russ]. DOI: 10.25018/0236_1493_2021_6_0_104.

A.N. Borisenko¹, Cand. Sci. (Eng.), Assistant Professor, e-mail: aiah@mail.ru,
A.V. Oleinikov¹, Cand. Sci. (Eng.), Assistant Professor, e-mail: oav197878@mail.ru,
M.N. Semenov, Deputy Chief Mechanic (on Equipment Reliability), SUEK-Khakassia, 655162, Chernogorsk, Republic of Khakassia, Russia,
¹ Khakass Technical Institute — branch of Siberian Federal University, 655017, Abakan, Republic of Khakassia, Russia.

A.N. Borisenko, e-mail: aiah@mail.ru.

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