Cov dej xau ntawm cov kav dej hauv av: kho vuam kev kho. Cov dej xau hauv cov kav dej welds yuav tsum tau nres rau kev kho vuam, thiab cov cam khwb cia hlau electrodes yuav tsum tau siv rau cov kav hlau cam. Ua ntej kho cov vuam, ntxiv rau kev ntxuav qhov saum npoo, ib lub qhov me me yuav tsum tau drilled ntawm txhua qhov kawg ntawm qhov tawg, thiab qhov tawg yuav tsum tau beveled ua ntej vuam. Thaum kawg, lub qhov me me yuav tsum tau kho, thiab cov vuam sib txuas yuav tsum tau kho nrog kev tiv thaiv corrosion. Cov yeeb nkab dej hauv qab: lub flange yog to, hloov cov roj hmab gasket, npaj cov bolts raws li tus naj npawb ntawm flange qhov, xyuam xim rau qhov sib npaug ntawm cov bolts. Yog hais tias nws yog tshwm sim los ntawm kev tawg ntawm lub hauv paus, ib lub pob tw yuav tsum tau ntxiv rau hauv cov kav dej. Underwater yeeb nkab to: Qhov (socket to leakage). Yog hais tias lub qhov (socket) ntawm cov cement yeeb nkab los yog cam khwb cia hlau yeeb nkab xau, lub sealing packing ntawm qhov chaw xau yuav tsum tau muab tshem tawm (ceev faj tsis txhob co ntau dhau), yaug nws kom huv si thiab pound nws nrog roj hemp, ces muab khi nrog xiav lead lossis asbestos. cement, los yog ntxiv ib lub tes tsho steel los nrog nws. Yog tias muaj dej ntws tawm ntawm cov yeeb nkab yas sib koom ua ke, qhov sib koom ua ke tuaj yeem raug txiav tawm thiab rov txuas nrog kev sib koom ua ke, los yog lub tes tsho steel thiab lub nplhaib roj hmab tuaj yeem siv los khi nws. Cov dej xau hauv cov kav dej hauv av: thaj chaw loj ntawm cov dej xau, txiav tawm ntawm cov xau ntawm cov yeeb nkab steel thiab rov vuam ib ntu ntawm cov yeeb nkab steel los yog kho vuam cov hlau phaj nrog tib lub nkhaus thiab cov tuab zoo sib xws ntawm qhov tawg. Lub cam khwb cia hlau yeeb nkab yog ib ncig ntawm lub voj voog, thiab cov hlau casing tuaj yeem muab ntxiv, thiab tom qab ntawd cov hlau lead lossis linoleum lossis asbestos cement yog txhaj ntawm cov hlau casing thiab cov yeeb nkab hlau. Yog tias nws yog qhov tawg ntev, qhov me me yuav tsum tau drilled ntawm ob qhov kawg ntawm qhov tawg kom tiv thaiv qhov tawg ntawm kev nthuav dav, thiab kev kho casing yuav tsum tau ntxiv. Lub steel bar yog welded nyob rau hauv lub puab phab ntsa ntawm ob kawg ntawm lub casing ntawm 15-20mm, thiab txoj kab uas hla yog txiav txim los ntawm qhov sib txawv, uas muaj peev xwm tiv thaiv cov filling los ntawm poob rau hauv lub raj thiab ua rau lub filling sib txawv.
