As of the 1970s, the following ranks classify athletes of the USSR (listed in descending order of value):
Merited Master of Sport of the USSR, (Russian: заслуженный мастер спорта СССР, abbreviated as "ЗМС", sometimes translated as Honoured Master of Sport of the USSR), equates to international champion who has made valuable contributions to the sport
Master of Sport of the USSR, International Class (Russian: мастер спорта СССР международного класса; abbreviated as "МСМК"), equates to international champion
Master of Sport of the USSR (Russian: мастер спорта СССР; abbreviated as "МС"), equates to national champion
Candidate for Master of Sport of the USSR (Russian: кандидат в мастера спорта СССР; abbreviated as "КМС"), equates to nationally ranked player
First-Class Sportsman (Russian: спортсмен 1-го разряда), equates to regional champion
Second-Class Sportsman (Russian: спортсмен 2-го разряда), equates to state champion
Third-Class Sportsman (Russian: спортсмен 3-го разряда), equates to city champion
First-Class Junior Sportsman (Russian: спортсмен 1-го юношеского разряда)
Second-Class Junior Sportsman (Russian: спортсмен 2-го юношеского разряда)
Third-Class Junior Sportsman (Russian: спортсмен 3-го юношеского разряда)
Each of these titles was awarded only for results on the official competitions.
You can find your current equipped classification in the chart below. It says:
Powerlifting (three lifts)
National Unified Sports Classification
Valid between 2014-2017
Approved by order of the Ministry of Sport #715
September 6, 2013
Edit: For raw lifters the following tables are from Ukraine.