TPM設(she)(she)備(bei)(bei)管理(li)中(zhong)的(de)(de)(de)關鍵(jian)績(ji)效(xiao)指(zhi)標。設(she)(she)備(bei)(bei)管理(li)要(yao)進步,其(qi)水平也需要(yao)度(du)量。在(zai)企業(ye)里用(yong)(yong)(yong)(yong)(yong)于度(du)量設(she)(she)備(bei)(bei)管理(li)好壞的(de)(de)(de)指(zhi)標很多(duo),例如(ru)設(she)(she)備(bei)(bei)的(de)(de)(de)可(ke)利(li)(li)用(yong)(yong)(yong)(yong)(yong)率(lv)、設(she)(she)備(bei)(bei)綜合效(xiao)率(lv)、設(she)(she)備(bei)(bei)故障率(lv)、平均故障間(jian)隔(ge)期、平均修理(li)時(shi)間(jian)、設(she)(she)備(bei)(bei)備(bei)(bei)件庫存周轉率(lv)等(deng)等(deng)。不同(tong)的(de)(de)(de)指(zhi)標用(yong)(yong)(yong)(yong)(yong)于度(du)量不同(tong)的(de)(de)(de)管理(li)方(fang)(fang)向,設(she)(she)備(bei)(bei)的(de)(de)(de)可(ke)用(yong)(yong)(yong)(yong)(yong)率(lv)在(zai)西方(fang)(fang)采(cai)用(yong)(yong)(yong)(yong)(yong)較多(duo)。而在(zai)我國,有計劃時(shi)間(jian)利(li)(li)用(yong)(yong)(yong)(yong)(yong)率(lv)和日歷時(shi)間(jian)利(li)(li)用(yong)(yong)(yong)(yong)(yong)率(lv)兩種不同(tong)的(de)(de)(de)提法。按照定(ding)義,西方(fang)(fang)定(ding)義的(de)(de)(de)可(ke)以(yi)用(yong)(yong)(yong)(yong)(yong)率(lv)實際上是(shi)日歷時(shi)間(jian)利(li)(li)用(yong)(yong)(yong)(yong)(yong)率(lv)。
日歷時間(jian)利用(yong)(yong)(yong)率等(deng)于實際工作(zuo)(zuo)時間(jian)除(chu)以日歷時間(jian),計劃時間(jian)利用(yong)(yong)(yong)率等(deng)于十次,工作(zuo)(zuo)時間(jian)除(chu)以計劃工作(zuo)(zuo)時間(jian)。前者反映了設(she)備(bei)(bei)的完全利用(yong)(yong)(yong)狀(zhuang)態。也(ye)就(jiu)是(shi)即使(shi)是(shi)單(dan)班(ban)運行的設(she)備(bei)(bei),我們也(ye)要按照24小時計算(suan)日歷時間(jian)。因為無論工廠是(shi)否(fou)使(shi)用(yong)(yong)(yong)這臺設(she)備(bei)(bei),都(dou)以折(zhe)舊形式消耗(hao)著企業的資產,后(hou)者反映了設(she)備(bei)(bei)的計劃利用(yong)(yong)(yong)狀(zhuang)況,如果是(shi)單(dan)班(ban)運行,其計劃時間(jian)就(jiu)是(shi)8小時,而設(she)備(bei)(bei)的平(ping)均(jun)故(gu)障(zhang)(zhang)間(jian)隔期也(ye)做平(ping)均(jun)無故(gu)障(zhang)(zhang)時間(jian)。它(ta)與(yu)故(gu)障(zhang)(zhang)停機率互補,也(ye)反映了故(gu)障(zhang)(zhang)頻次,也(ye)就(jiu)是(shi)設(she)備(bei)(bei)的健康狀(zhuang)態。
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