Dab tsi yog qhov kev phom sij ntawm cov khoom siv hluav taws xob kuaj pom?
(1) Kev phom sij ntawm oxygen:
Thaum cov pa oxygen concentration ntau dua 23 feem pua, qee cov khoom yuav ua rau combustion, thiab nws yuav hlawv hnyav heev. Kev sib ntaus sib tua tuaj yeem hlawv hauv huab cua nrog oxygen ntau dhau thiab tsis muaj kev tiv thaiv. Thaum nws tshaj 70 feem pua, nws yuav ua rau muaj kev puas tsuaj rau tib neeg lub cev thiab ua rau "oxygen" lom;
Thaum cov pa oxygen concentration qis dua 12 feem pua, tib neeg txoj kev txiav txim yuav ploj mus, ua pa nyuaj, thiab cov tsos mob ntawm daim di ncauj liab yuav tshwm sim. Thaum nws tsawg dua 10 feem pua, yuav ntuav, txav tsis tau, tsis nco qab thiab txawm tuag.
(2) Kev phom sij ntawm cov pa roj (kua):
Gases, vapors, fumes (xws li hydrogen sulfide, sulfur dioxide, carbon monoxide, chlorine, ammonia, organic gases)
