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11Aair~tenance pru~ram for mobile equipment <br />cuts) costs at Henderson molt' mine <br />Ralph M. Barnett, Climax Molybdenum Co. Div of 4max Inc. <br />Paul D. Tomlingson, management [onsuttant, U?over, Colo <br />Mt,ue ovra-trues era always interested in reports of <br />eflezticc maintenance programs at other mines. Thz} <br />Anuw that ulthongh luril conditions care .cideh', specific <br />elements nl a cJSt-clTzetive progrtm elsewhere may br <br />adapted fur (heir own use. A cast in point is the <br />maimenanae program for mobile eyuipmcnt at the <br />Henderson und=rground molybdenum mine of Climav <br />Molybdenum Co. Thz program was put together in the <br />lirst }'ear of mine uperutiun by local operating and <br />maintzn:utce man;tgerc. assisted b}, an independent <br />cunsultant..4mac is pleased with the results: lower costs, <br />improezd avaihbility, and good control cf muintena ncz. <br />The Henderson mina. 5(1 mf west of Denver, started up <br />in 1976. Yt tic, 3.700 to S,d00 R below the crest of Red <br />Rlounmin. Penzl caving is the main sloping system. <br />The mine plant is tin the su rl;tcc. 1,700 ft about the <br />top of the orebudy. ~1ost mining eyuipmcnt is apzr.itzd <br />',30011 below the surface plant. on the main RI00levzl. <br />Llnerushed ore from this prod uetiun level is dropped Mlfi <br />ft to railroad haulage lacilitics tin the 7i0U level. (Level <br />numbers indicate elevation above sea level.) Electrically <br />powered trains move the tiro from lhz 75001rvcl through <br />u 10-mi mm~zl and over t mi of surface railroad to the <br />amcentra tor. The cunccntr:uur and mini plant, scpa- <br />ratcd b} grzat distanze, funztion semi-independently. <br />Three lacilities arc pnn'ided for maincen;tnce of <br />nwbile mine equipment at Hcndzrcon: the overhaul <br />gartgc at the mine plant on the surfnze, the main <br />underground garoge tin the FIOU Izvcl. and a small <br />maintenance facility on the 7500 railroad haulage Izvel <br />Fig. 1-Schematic of maintenance system at Henderson <br />n <br />Emer tlala in <br />repair history <br />Inputs U maintenance <br />Mechanic do work <br />Complaints t MJC <br />75 76 <br />PM inspection antl Assign <br />lubricat on schedule 2 work <br />(computer screen) <br />fMJCI <br />Emergency work 3 Minor Maintenance <br />Telephone n t4 foreman <br />PM inspection / !shifter) <br />results 4 Alajor Ohlain <br />parts <br />Obtain a r Completed <br />Overhaul and pp oval antl set MJO's and MJC's <br />rr uild forecast 5 IMJU priority nn Cat.#3 <br />/~^ / Warehouse <br />MESA 6 <br />-~ Visual 19 <br />Protect work ~8i control racks <br />lengmeering inpu0 ~ {MJO) Planner Schedule MJO's 18 <br />scheduler Re on <br />(tg ~ Report 1g labor <br />Obtain approval t2 material <br />and set priority usage <br />on Cat. $7 Obtain <br />materials <br />(purchase requisition) <br />Maintenance labor 11 _^~ EDP <br />Feedback and uul¢ation report O Open and close MJO's 20 <br />corrective acUOn (weekly) 21 <br />Maintenance lob order <br />25 ?, summary report <br />(weekly) 22 <br />Make Edit reports <br />decisions <br />Maintenance cpsl <br />report <br />Imonthlyl 23 <br />