The process consists of preheating the metal to be cut to its ignition (oxidation) temperature, i.e., above 870°C in case of steel.
The preheating is done by oxy- acetylene gas flame, which is supplied from surrounding openings of the cutting torch. When this temperature is attained, a jet of high pressure oxygen from a central opening of the cutting torch is directed on the red hot metal.
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| Hazard Category | Hazards | Controls |
| Fire hazards or Explosion | 1. Can occur by the ignition of combustible materials or by gas leak. 2. Slip/Trip damage hose could cause leak/fire. 3. Fire from an ignition source during hot work: | 1. Have a suitable fire extinguisher available close to the work face during hot work with visibility vest. 2. Make sure before commence the activity removed all combustible materials and secured the area with fire blanket 3. Install Fire Arrester on the gas cylinder regulator. 4. Ensure uncoiled hoses will no be a tripping hazard. 5. Ensure there are no leak, cracks or damage to hoses. 6. Ensure all torch valves are closed and inspect for possible leaks. 7. Hot work to be done where possible away from the potential fuel source. 8. Use partitions to restrict and localize the ignition source. 9. Work strictly in accordance with hot work permit conditions. |
| Housekeeping | 1. Slip, Trip, Fall | 1. All materials, tools & equipments shall be stored in tidy manner & the site/work shop 2. should be cleaned as the work progress. |
| Personnel Injury | 1. Can occur by persons who doesn’t comply with eTEC policy or procedures. 2. Persons do not recognize the hazard on around work place or shop place. | 1. Required minimun PPE’s welders cap, googles, oxygen fed resperatory if required, face shield, leather gloves, apron, leggings. 2. Personal protective equipment (PPE) shall be worn at all times. |
| Personnel Injuries | 1. Gas inhalation,unconsciousness, or death. 2. Storage of gas cylinder | 1. Monitoring freeqency will be depends upon pattern of the work. 2. Keep separate storage for filled and empty cylinders. 3. keep cylinders always upright position tied up with chains and under secured well ventilated shed 4. Do not roll the cylinders 5. Do not lift cylinders by means of slings, chains or ropes 6. Keep 20 ft distance between storage of flammable gas and oxygen cylinders. |
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제주도 서쪽 비양도라는 섬이 있습니다. . 비양도는 제주시 한림읍 비양리 위치해 있으며, 하늘에서 날오온 섬이라는 의미를 지니고 있습니다. 비양도는 한림항에서 약 1.1km 떨어져 있으며, 섬의 모양은 원형에 가깝고 약 2000여명의 주민이 거주하고 있습니다. 비양도의 중앙에는 해발 114m 높이의 비양봉 본석구가 있고, 서쪽 해안에는 제주도에서 가장 큰 초대형 화산탄들이 분포하고 있습니다. . 섬의 북쪽 해안에는 호니토(homito)로 알려진 굴뚝모양의 바위들이 약 20여기 분포하고 있다. 호니토는 용암이 흐르다가 습지 등의 물을 만나 수증기와 용암이 뒤섞여 분수처럼 솟구쳐 나와 쌓여 만들어졌으며, 천연기념물 제439호로 지정되어 있습니다. . 섬의 동쪽에는 펄렁못 엄습지와 마을 신당이 위치해 있습니다. 최근까지 비양도는 약 1,000년 전에 분출한 섬으로 알려져 왔으나 용암의 나이를 분석한 결과 27,000년 전에 형성된 것으로 조사되었습니다. . …
마카오는 특별행정구역으로 구분되어 있습니다. 지금은 중국과 비자 면제가 되어 있지만, 사실 얼마전까지만 해도 중국에 입국하려면…