Txhua lub tshuab muaj lawv cov khoom tawg yooj yim lossis nrawm hnav tawm ntawm qhov chaw, thaum Back up spares yog qhov tseem ceeb heev rau cov hmoov nplej cog cog, cov tshuab zeb yuav nyuaj tuaj yeem tau hnav ntawm cov lag luam hauv zos. Hloov chaw, nws xav tau yuav khoom los ntawm cov neeg xa khoom lossis cov neeg nyob ze. Qhov no yuav muaj tseeb siv sijhawm thiab tau nyiaj ntau. Lub chaw cog zaub tsis tuaj yeem nres cheem thiab tos kom muaj khoom seem rau hnub los yog lub lim tiam.
Xav txog cov xwm txheej no, peb ib txwm thauj khoom tsawg kawg ib xyoos thim rov qab los ua ke nrog lub tshuab milling tag nrho, qhov kev lees paub tias lub tshuab xim tsis muaj kev txhawj xeeb rau kev hloov qhov hnav tawm hauv ib xyoos. Yog tias cov neeg xav tau ntau qhov kev lag luam rau xyoo noj, peb yuav muab raws li. Dhau li, peb tau qhib lub chaw rau khoom txawv teb chaws, ntseeg hais tias peb yuav qhib ntau lub tsev rau khoom kom txhawb peb cov neeg siv kawg qhov chaw tsim nyog rau kev ruaj khov milling hauv lub sijhawm ntev.
Cov ntaub ntawv nrawm nrawm dhau ntawm cov kab li Vee-txoj siv, cov kabmob, cov kabmob npog, cov txhuam, cov ntxaij vab tshaus, cov ntsia hlau thiab cov txiv ntseej, cov thoob khob, cov log rub, lub tog raj thiab lwm yam yog txhua yam nyob hauv peb qhov kev txhawj xeeb, qhov nyuaj yog tias cov qauv tshuab txawv siv ntau hom lossis qhov loj me spares, yog li peb yuav tsum paub tseeb tias txhua qhov nqi yog muaj lossis ruaj khov tau yooj yim.
Txhawm rau muab cov millers kom pom tseeb, peb tau tsim cov duab ntawm txhua lub tshuab loj nrog nws qhov sib xyaw (qhov tsis txaus ntseeg), yog li tsis muaj cov neeg mauv paub ntau lossis tsawg ntawm cov npe spares thiab tus qauv, nws tuaj yeem paub txog feem twg yog qhov nws xav tau yooj yim.
Ntawm ib sab tes, peb muab tag nrho cov ntawv pov tseg muaj nyob rau hauv Suav teb thiab peb cov chaw khaws khoom lag luam txawv teb chaws, kom lav lub luag cov khoom xa tuaj; Ntawm qhov tod tes, peb ib txwm txhim kho qhov kev ua tau zoo los mus txuas ntxiv lawv lub neej kev pab, kom cov millers xav tau sijhawm tsawg dua los hloov lawv. Piv txwv li, peb siv cov tshuab muaj zog zoo dua thiab cov kabmob loj dua li ua ntej kom paub tseeb tias cov ntu ntawd yuav tsis tawg nyob rau lub sijhawm ntev dua, thiab peb siv cov rooj sib zog ua kom muaj zog thiab nrum hlau ntawm cov mills thiab sifters, kom lub neej kev pab cuam tau ntev.