(1) Thaum lub sij hawm cia, tshwj xeeb tshaj yog nyob rau lub sij hawm cia, lub cev lub cev ntawm hoses thiab hose sib dhos yuav hloov, ua rau lawv poob ib co ntawm lawv zoo tshaj plaws khoom ua ntej siv. Yog li ntawd, qhov chaw cia khoom yuav tsum muab cov hose thiab hose sib dhos nrog kev tiv thaiv zoo tshaj plaws thiab qhov qis tshaj ntawm kev puas tsuaj.
(2) Lub sijhawm khaws cia yuav tsum luv li sai tau. Cov khoom muag khoom muag yuav tsum ua raws li txoj cai "thawj hauv, ua ntej tawm". Yog tias nws khaws cia rau lub sijhawm ntev, kev ntsuas kev ua haujlwm ntawm PU hose yuav tsum tau ua ua ntej siv.
(3) Qhov kub cia yuav tsum nyob nruab nrab ntawm 0 thiab 35 degree, nyiam dua nyob ib ncig ntawm 15 degree. Thaum lub sij hawm cia, qhov kub ntawm lub PU hose yuav tsum tsis txhob siab tshaj 50 degree los yog -30 degree, los yog nws yuav tsis hloov pauv txawv txav.
(4) Qhov txheeb ze av noo yuav tsum tsis pub tshaj 65 feem pua.
(5) PU hoses yuav tsum tau muab cia rau hauv qhov chaw tsaus ntuj kom deb ntawm tshav ntuj thiab muaj zog tsim teeb pom kev zoo. Yog hais tias muaj qhov rais los yog lub teeb qhov nyob rau hauv qhov chaw cia khoom, lawv yuav tsum tau them nrog liab, txiv kab ntxwv los yog dawb hoods.
(6) Vim tias ozone yuav muaj kev phom sij rau cov khoom siv roj hmab, tsis muaj cov khoom siv uas tuaj yeem tsim ozone yuav tsum tau nres hauv qhov chaw cia. Piv txwv yog mercury vapor teeb, cov khoom siv hluav taws xob hluav taws xob siab, lub tshuab hluav taws xob lossis lwm yam khoom siv uas muaj peev xwm tsim cov hluav taws xob lossis hluav taws xob.
(7) Roj hmab thiab hoses yuav tsum tsis txhob muab tso ua ke nrog tej yam khoom los yog raug rau volatile gases ntawm cov khoom no. Tsis tas li ntawd tsis txhob hu rau qee yam hlau, xws li tooj liab, hlau thiab manganese, uas tuaj yeem muaj kev phom sij rau qee yam khoom siv roj hmab.
(8) PU hose cov khoom yuav tsum muab cia kom deb ntawm qhov chaw sov. Yuav tsum muaj qhov deb txaus ntawm cov khoom thiab cov khoom siv hluav taws xob kom ntseeg tau tias ua raws li cov cai ntawm Tshooj 4.3.
(9) Qhov chaw cia khoom ntawm PU hose cov khoom yuav tsum tau ceev kom deb ntawm cov khoom siv uas tuaj yeem tsim hluav taws xob thiab sib nqus teb. Vim tias kev hloov pauv lossis hloov pauv hauv qhov hluav taws xob lossis qhov chaw sib nqus tuaj yeem tsim cov hluav taws xob sib nqus hauv cov hlau, uas ua rau muaj cua sov.
(10) PU hose cov khoom yuav tsum tau muab khaws cia thiab muab tso rau hauv txoj kev uas tsis tuaj yeem tiv taus kev ntxhov siab ntau dhau, elongation lossis deformation, thiab yuav tsum tsis txhob sib cuag nrog cov khoom ntse lossis hauv av. Thaum twg ua tau, siv cov racks khaws cia cov khoom siv hose. Coiled hose los yog hose sib dhos yuav tsum tau muab cia kom tiaj tus thiab zoo dua tsis yog stacked. Yog tias stacking tsis tuaj yeem zam tau, qhov siab ntawm pawg yuav tsum raug txwv rau qhov txwv uas tsis ua rau lub cev deformation mus tas li ntawm cov hoses stacked rau hauv qab txheej. Coiled hose cov khoom yuav tsum tsis txhob raug ncua los ntawm cov ceg txheem ntseeg. Cov hoses thiab hose sib dhos muab nkag rau hauv lub xeev ncaj nraim yuav tsum tau khaws cia ncaj nraim thiab tsis khoov.
(11) PU hose cov khoom yuav tsum raug tiv thaiv los ntawm cov nas tsuag, thiab yog tias muaj qhov txaus ntshai, kev tiv thaiv tsim nyog yuav tsum tau muab rau cov khoom.
(12) Nws yuav tsum raug sau tseg tias yuav tsum tau ua kom ntseeg tau tias cov khoom siv PU hose sab nraud tau muab khaws cia hauv qhov chaw cia kom raug thiab ua raws li lawv cov kev xav tau. Yog li ntawd, kev txheeb xyuas cov khoom sib txawv ntawm cov khoom hose hauv Tshuag yog qhov tseem ceeb. Rau cov hose sib dhos nrog cov txuas tsis tas mus li, xws li hose cov rooj sib txoos nrog cov txheej txheem clamp-holder, kev tshuaj xyuas yuav tsum tau ua kom ntseeg tau tias kev ua tau zoo ntawm cov couplings.
(13) Tshem tawm cov khoom xa tawm ua ntej siv lub hose sib dhos rov qab mus rau qhov chaw cia. Ua tib zoo mloog ntau dua rau cov hoses siv los thauj cov tshuaj, tawg, nplaim taws lossis cov khoom siv corrosive. Cov hoses yuav tsum tau kuaj xyuas tom qab ntxuav thiab ua ntej xa rov qab mus rau qhov chaw cia kom txiav txim siab lawv qhov tsim nyog rau kev siv ntxiv.
