17. HVAC Duct Installation & Insulation
HVAC is an abbreviation for Heating, Ventilation and Air Conditioning, and refers to the climate control systems installed in homes or commercial properties. Their task is to move heated or cooled filtered air throughout the building, to keep inhabitants of the structure comfortable.
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| Hazard Category | Hazards | Controls |
| Slips and Trips | 1. Cause by poor lighting and untidy work areas | 1. Ensure proper wind up and housekeeping at work place.
2. All work areas are to be kept clean and free of tripping 3. All unused materials and tools shall be lowered to the 4. No loose materials shall be permitted to be left on 5. Adequate lighting for night work is to be provided or 6. Waste of fiber insulation shall be collected in sealed |
| Lacerations and Bruising Injury | 1. Can occur use of hand tools being struck
2. Can occur that defective hand tools are used without safety devices |
1. Hand tools are only to be used for their intended purpose, Do not improvise2. Use the correct tool, size and type for the job 3. Inspect tools regularly for signs of damage or wear. 4. When using hand tools, watch out for person working 5. Never use attachments for extra leverage, unless 6. Do not leave hand tools lying around to cause a hazard 7. Tools are to be secured by wrist straps or lanyard where |
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Electrocution and Burn |
1. Not used properly 2. Lack of safety awareness to use methods properly |
1. All electrical equipment is to be tested for earth leakage and tagged by a competent electrician every quater. and untagged tools are not to be used.2. Employees are not permitted to operate power tools unless they have been suitably trained or are deemed to competent 3. Power tools are to be stored in clean, dry conditions and 4. Power tools are to be used for the purpose they were 5. An approved earth leakage protection device is to be |
| Respiratory ailment and Collision | 1. Can cuase by falling metal sheets pieces during cutting of metal
2. Can occur by flying fiber glass insulation particle during cutting of insulation sheets |
1. Where practicable all cutting of metal sheets & insulation sheets should be done at ground level where cutting done at height2. Off cuts need to removed as soon as possible 3. Personnel must wear PPE such as mask, gloves, etc |
| Falls of Personnel | 1. As using of improper platform such as scaffold or ladder on working at height
2. Cause by unsafe action such as working without PPE like harness |
1. Ensure that proper scaffold platform or ladder is provided while working at height & ladder is used properly.2. No one shall be allowed to use the top of step ladder. third step from top shall be last step for standing 3. Metal spreader or locking device must be provided on 4. All employees working at height 1.8 meter (6 feet) or |
| Back Strains and Sprains | 1. Due to Inadequate method of manual lifting & handling |
1. Get assistance when lifting heavy items 2. Use good posture when lifting 3. Use mechanical method of lifting to avoid weight related |
| Falling Objects | 1. Failure of unauthorized Personnel Entry | 1. Ensure that safety barriers and appropriate warning signs are placed under the work area to avoid the entry of non- essential personnel |
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천장 상부에 올라가서 덕트 보온작업은 사람이 떨어질 수 있습니다. 작업발판 상태를 확인하고 확인하고 점검해야 합니다. 덕트/전기/소방 관련된 작업으로 천장(텍스) 위로 올라가서 작업하는 경우에 추락사고 점검을 필히하여야 합니다.
약 10년 전에 4m 높이 천장 위에서 케링(행거)에 의존하여 임시발판(합판 등)을 놓고 작업하던 중, 잘못 밟아서 추락하는 사고가 있습니다.
눈에 보이지 않다보니 더욱 위험하고, 사다리가 안닿는 높은 천장은 특히나 더 위험하니, 현장 조건에 맞도록 적절한 작업대 확보가 필요합니다.
현장에 납품되는 대형 덕트를 보온작업하는 공장에서 있었던 일 입니다. 공장에 세워두었던 덕트가 넘어지며 그 아래에 있던 근로자 위로 쓰러져 상해사고가 발생되었습니다. 플랜트 현장은 대형 덕트 및 HVAC 자재/기계를 이용하여 작업하니 밀폐공간작업 등도 같이 확인해야 할 것 입니다.
위 내용은 HVAC 부분을 다루었지만 HVAC 의 범위가 공조시스템으로 넓다보니 국한적이지 않은, 복합적인 작업으로 이해하여 주시기 바랍니다.
감사합니다.