Cov kev suav ntawm cov phab ntsa tsawg kawg ntawm kev sib txuas cov yeeb nkab ntawm lub taub hau Asme ntawm cov kev cai lij choj muaj feem xyuam thiab cov qauv hauv tus qauv ASME. Cov hauv qab no yog cov kev saib xyuas tshwj xeeb thiab cov kauj ruam:
Cov Qauv Txheej Txheem thiab Cov Qauv:
Qhov yuav tsum muaj tuab ntawm lub tog raj kheej nyob rau sab hauv lub siab: raws li cov phab ntsa tuab, cov phab ntsa tsawg kawg ntawm lub zog hauv qab mus rau kev tiv thaiv corrosion. Cov mis tshwj xeeb yog:
[T_ {ug-45}=t_a + \\ ntawv {corrosion Allowance}]
Ntawm lawv, [T_A] yog qhov tuab tuab tau suav raws li UG-22 load.
Xam cov txheej txheem hauv cov xwm txheej sib txawv:
UG-45 (a): Rau kev rhuav tshem ntawm Manholes, cov neeg tsheb, thiab lwm qhov kev xam pom tsuas yog xav txog qhov thauj khoom ntawm UG-22.
UG-45 (1): Qhov uas yuav tsum muaj tuab ntawm lub tog raj kheej nyob rau hauv lub siab sab hauv siab ntxiv rau kev zam kev xeb.
UG-45 (4): Yam tsawg kawg nkaus ntawm cov qauv txheej txheem phab ntsa tuab ntawm cov yeeb nkab ntxiv corrosion nyiaj.
Lwm yam cuam tshuam:
Corrosion Allowance: Thaum xam cov phab ntsa tuab ntawm kev sib txuas cov yeeb nkab, kev tso cai ntawm xeb uas yuav tsum tau txiav txim siab. Yog tias siv cov ntaub ntawv tso yeeb yaj kiab, tus yuav tsum tau siv cov yeeb nkab Wallly series yuav tsum:
[T _ {\\ ntawv nyeem {nom}=0.128 \\ ntawv}}]
Yam tsawg kawg Phab Ntsa Thickness yuav tsum muaj: qhov yuav tsum thickness rau kev sib txuas cov yeeb nkab yuav tsum tsis txhob tsawg dua 0.112 ntiv. Yog tias cov khoom siv cov yeeb nkab siv, qhov yuav tsum tau xaim hluav taws xob thickness koob yuav tsum yog 0.128 nti.
