Daim ntaub ntawv thov siab siab
Q1: Cov qauv tsim qauv dab tsi rau cov qauv rau?
A1: Tus Thawj Saib Xyuas Tseem Ceeb suav nrog:
ASME BPVC seem VIII: Division 1 rau cov ntawv thov dav dav
Rau 13445: European siab rau lub nkoj txheem
GB / T 150: Suav siab rau lub nkoj
Cov Kev Tshwj Xeeb: Additional testing for thickness >40 hli
Tsim Tsa: Feem ntau 3.5: 1 rau Q355B cov hlab
Q2: Yuav ua li cas yog phab ntsa tuab xam rau Q355B cov hlab ntsha?
A2: Kev Xam Txheej Txheem:
Cov Lus Yooj Yim: t=(pd) / (2se-0.2p) ib asme
Corrosion Allowance: Feem ntau 1-3mm ntxiv
Kev ua siab ntev tsim: ± 10% ntawm nominal tuab
Hydrotest xav txog: 1.5x tsim kev siab
Nozzzzzzzzzzzzzzzzzzzzzle Refore: Cheeb Tsam Them Nyiaj
Q3: Dab tsi yog vuam cov txheej txheem tseem ceeb heev rau cov hlab ntsha siab?
A3: Qhov tseem ceeb vuam yuav tsum muaj:
WPS tsim nyog: Ib asme Seem IX
Post - Weld Kev Kho Cua Sov: Mandatory for t>35 hli
100% rt / ut: Rau txhua lub siab -}} Tuav Welds
Hardness tswj: Max 225HB hauv Weld Cheeb Tsam
PWHT kev txheeb xyuas: Cov ntaub ntawv ntsuas kub thiab kev ntsuam xyuas nyuaj
Q4: Dab tsi tsis yog- kev xeem yuav tsum tau ua?
A4: Yuav tsum muaj NDT cov hau kev:
Radorography: Rau txhua pob taub qab welds
Ultrasonic kuaj: Rau Nozzle Welds
Sib Nqus Parsle: Rau cov nyom sab nraud
Cov roj ua kua: Rau tsis - cov chaw ferritic
Siab Ntsuas: Hydrostatic lossis pneumatic
Q5: Cov nkoj siab tau soj ntsuam li cas?
A5: Hauv -}}}} Txoj Haujlwm Pabcuam:
Sab nraud pom: Txhua xyoo
Kom tuab: Txhua txhua 3-5 xyoos
Kev Soj Ntsuam Sab Hauv: Thaum kaw
Kev tsom xam: Rau kev pab cyclic
Qoj - rau -} kev pab: API 579 KAWG
