Safety coefficients of mine winders Mendera, Z [Politechnika Krakowska (Poland)] 01 COAL, LIGNITE, AND PEAT; HOISTING; OCCUPATIONAL SAFETY; HOISTS; SAFETY STANDARDS; CALCULATION METHODS; COAL MINES; MECHANICAL PROPERTIES; MINE SHAFTS; POLAND; REGULATIONS; ROPES; STEELS; STRESS ANALYSIS; UNDERGROUND MINING; ALLOYS; DEVELOPING COUNTRIES; EQUIPMENT; EUROPE; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS HANDLING; MATERIALS HANDLING EQUIPMENT; MINES; MINING; SAFETY; SHAFT EXCAVATIONS; STANDARDS; UNDERGROUND FACILITIES; 012032* - Coal, Lignite, & Peat- Underground Mining- Transport & Services- (1987-); 016000 - Coal, Lignite, & Peat- Health & Safety Critically analyzes the total safety coefficient and the partial random and determined safety coefficients used in mine component calculations by the semi-probabilistic method of limit states. Values of safety coefficients for construction steels, partial and calculated total safety coefficient for cages (skips), ropes, rope pulley and tower type head frames are shown in tables and compared with safety coefficients required by regulations. It is suggested to represent the total safety coefficient as a product of three partial coefficients: the coefficient for transition from the immediate strength of steel to the yield point, the coefficient for transition from static to dynamic loads and a safety margin for unforeseen effects (imperfect calculation models, human error, etc.). The conclusion is reached that the safety coefficients required by regulations are not correlated with the degree of accuracy (adequacy) of the calculation model used. 5 refs. Poland 1990-03-01 Polish Conference Journal Article Journal Name: Mechanizacja I Automatyzacja Gornictwa; (Poland); Journal Volume: 28:3/4; Conference: Improvement in engineering and organization of shaft transport in black coal mines, Doskonalenie techniki i organizacji transportu pionowego w kopalniach wegla kamiennego, Cracow (Poland), 21-23 Jun 1990 Medium: X; Size: Pages: 49-51 https://doi.org/ [] 28:3/4 CONF-9006398- Journal ID: ISSN 0208-7448; CODEN: MAGOE CLA; CLA-92-010769; EDB-92-015483 2008-02-07 5984112