1. Yog vim li casxav tautawg-pov thawj?
Ntau qhov chaw tsim khoom tsim cov tshuaj tua hluav taws. Kwv yees li ob feem peb ntawm cov mines thee muaj cov khoom tawg. Hauv kev lag luam tshuaj, ntau tshaj 80% ntawm cov chaw ua haujlwm tsim khoom muaj cov khoom tawg. Cov pa oxygen xav tau rau kev tawg yog nyob txhua qhov chaw.
Cov cuab yeej hluav taws xob siv ntau hauv cov txheej txheem tsim khoom, ntau yam kev sib txhuam ntawm cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, hluav taws xob zoo li qub, qhov kub thiab txias, thiab lwm yam yog qhov tsis muaj kev cuam tshuam thiab sib npaug rau qhov hluav taws kub.
Yog li ntawd, nyob rau hauv ntau qhov chaw lag luam, thaum qhov sib xyaw ntawm cov khoom tawg thiab cov pa oxygen mus txog qhov kev txwv tawg, yog tias muaj qhov hluav taws kub, qhov tawg yuav tshwm sim.
2.Explosion pov thawj daim ntawv pov thawj zoo li EXDIICT6
① "Ex": explosion-proof product marks, domestic explosion-proof marks tag nrho pib nrog Ex;
② "d": tawg-pov thawj daim ntawv ntawm cov khoom;
③ "ⅡC": yog hais txog qhov chaw txaus ntshai uas cov khoom siv tau;
④ "T6": pab pawg kub;
⑤ "Gb": Cov cuab yeej tiv thaiv qib ntawm cov khoom;
3.Ex ia IIC T1..T6
IIC yog pawg tawg tau txiav txim siab raws li cov khoom sib txawv raws li EN60079-0.
Pawg I: Coal mines nquag tsim cov pa roj, uas yog methane roj.
Pab Pawg II: Cov pa cua tawg
IIA: Gas ib puag ncig sawv cev los ntawm propane.
IIB: Gas ib puag ncig sawv cev los ntawm ethylene.
IIC: Gas ib puag ncig sawv cev los ntawm hydrogen.
Pawg III: Cov huab cua tawg tawg
IIIA: Plua plav ib puag ncig sawv cev los ntawm cov khoom tawg yooj yim ya.
IIIB: Plua plav ib puag ncig sawv cev los ntawm cov hmoov av uas tsis yog-conductive.
IIIC: Plua plav ib puag ncig sawv cev los ntawm cov hmoov av conductive.
4. Khoom siv qeb
Qeb I: cov khoom siv hluav taws xob rau cov mines hauv av;
Qeb II: Cov khoom siv hluav taws xob rau qhov chaw tawg tawg uas tsis yog cov mines thee.
Chav II tawg-pov thawj "d" thiab cov khoom siv hluav taws xob muaj kev nyab xeeb "i" ntxiv rau hauv chav kawm IIA, IIB, thiab IIC.
5.Tpawg emperature
Raws li qhov siab tshaj plaws saum npoo ntawm cov khoom siv, nws tau muab faib ua rau pawg ntawm T1 txog T6, raws li qhia hauv daim duab hauv qab no.
6. Thaj tsam txhais
Zone 0, 1 thiab 2, roj, vapor thiab huab cua puag ncig
Cheeb tsam 0: Ib puag ncig tawg qhov chaw uas cov khoom siv hluav taws xob sib xyaw nrog huab cua hauv cov pa roj, vapor lossis pos huab tsis tu ncua lossis ntev ntev lossis nquag.
Zone 1: Cov khoom siv hluav taws xob tuaj yeem tshwm sim lossis qee zaus tshwm sim thaum lub sijhawm ua haujlwm ib txwm ua hauv cov pa roj, vapor lossis pos huab sib xyaw nrog huab cua.
tawg ib puag ncig.
Cheeb tsam 2: Qhov twg cov khoom uas tsis zoo li tshwm sim los yog tsim thaum lub sij hawm ua hauj lwm ib txwm nyob rau hauv daim ntawv ntawm gases, vapors los yog pos huab nrog huab cua.
Cov huab cua tawg, lossis cov uas, yog tias tam sim no, tsuas muaj nyob rau lub sijhawm luv luv.
Zones 20, 21, 22: Plua plav ib puag ncig:
Cheeb tsam 20: Kev tawg ib puag ncig nrog txuas ntxiv lossis mus sij hawm ntev lossis nquag muaj cov hmoov av combustible hauv huab cua;
Cheeb tsam 21: Cov huab cua tawg qhov chaw uas cov hmoov av combustible tuaj yeem tshwm sim hauv huab cua thaum lub sijhawm ua haujlwm ib txwm;
Zone 22: Thaum lub sijhawm ua haujlwm ib txwm muaj, qhov chaw tawg yuav tsis zoo li tshwm sim lossis tsim cov plua plav tawg hauv huab cua, lossis txawm tias nws tshwm sim.
Nws kuj yog qhov chaw tawg uas tsuas muaj nyob rau lub sijhawm luv luv xwb.
7.Specific pawg:
EPL ntawm Class I cov cuab yeej nyob rau hauv qhov chaw tawg nrog methane hauv cov mines thee tau muab faib ua ob theem: Ma thiab Mb.
EPL ntawm Class II cov cuab yeej nyob rau hauv ib puag ncig roj tawg tau muab faib ua peb theem: Ga, Gb, thiab Gc.
EPL ntawm Chav Kawm III cov khoom siv hauv cov khoom siv hauv cov plua plav tawg tau muab faib ua peb theem: Da, Db thiab Dc.