HAZARDSOFCONFINEDSPACES-BCMunicipalSafety…:密闭空间-公元前市的安全隐患….ppt
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1、HAZARDS OF CONFINED SPACES,City of Langley,As per OG #2.14.06, Confined Space Rescue, Policy: “Only personnel trained in confined space operations will enter confined spaces.” This session does not constitute confines space operations training, it is simply an awareness session.,AGENDA,What is Confi
2、ned Space Dangers of Unplanned Rescue Attempts Hazards Oxygen Levels Toxins / Explosions Physical Hazards,WHAT IS A CONFINED SPACE?,A confined space is an enclosed or partially enclosed area that is: Is large enough to get a whole body inside, Is not designed for someone to work in regularly, but wo
3、rkers may need to enter the confined space for tasks such as: inspection, cleaning, maintenance, and repair. Entry and exit is difficult and can complicate rescue procedures.,WHAT IS A CONFINED SPACE?,Examples of confined spaces: Tanks Manure pits (e.g Mushroom barn) Storage bins Boilers Double hull
4、s Vats Pumping stations Kilns Pits, sumps Vaults Vessels Silos Manholes Pipelines Water reservoirs Sewers, Other similar spaces,WHAT IS A CONFINED SPACE?,Entry into confined spaces can be very hazardous and potentially deadly. Unless proper training, equipment, and procedures are in place, workers a
5、re not allowed to enter such spaces. A worker is considered to have entered a confined space just by putting his or her head across the plane of the opening. Absolutely no employee may enter a confined space for any reason unless properly trained awareness training such as this session does not qual
6、ify as the training needed to enter a confined space.,WHAT ARE THE DANGERS OF CONFINED SPACE RESCUE?,Did you Know: TWO-THIRDS, Of all confined space fatalities occur among would-be rescuers. Who is a rescuer? Anyone (workers, police, ambulance, fire, etc.) who attempts to save someone in a confined
7、space. If you come upon a scene where you hear of or see people who have succumb to vapors/fumes, etc. and are conscious or unconscious DO NOT rush in. Analyze the environment to establish if the area may be a confined space or an exposure (ex. Carbon monoxide in a garage). Remember, even a well-pla
8、nned rescue can end up as a body retrieval. To prevent deaths: It is critical to use good confined space entry practices AND training so that there is no need for rescue operations.,WHAT ARE THE DANGERS OF CONFINED SPACE RESCUE?,WHY HAVE CONFINED SPACES KILLED SO MANY PEOPLE? Confined spaces are dec
9、eiving. A confined space often appears to be harmless; no danger signs are apparent & the space may have been entered on prior occasions without incident. However, a worker cannot assume that conditions have not changed and that the space is safe for entry each time. WHY DO SO MANY FATALITES RESULT
10、FROM EMERGENCY RESCUE? Fatalities can occur when the rescuers: Are overcome by their emotions Take unnecessary chances Do not know the hazards involved Do not have a plan of action Lack confines space rescue training,WHAT ARE THE DANGERS OF CONFINED SPACE RESCUE?,IS IT IMPORTANT TO INFORM CONFINED S
11、PACE WORKERS AND RESCUERS OF THE FOUR-MINUTE LIMINATION? Absolutely. It is important to know that the period of time for successful rescue is very limited. Otherwise, a rescue attempt will become body retrieval. After only four minutes without oxygen, it is very likely that a worker will experience
12、asphyxiation, which may result in brain damage or death. WHAT DOES ONE NEED TO ASSUME IN ANY CONFINED SPACE RESCUE OPERATION? Everyone involved in a rescue should assume that the space is deadly! Under no circumstance should you rush in to rescue unless you have the training, PPE, equipment, and saf
13、e work procedures to do so.,WHAT ARE THE HAZARDS OF CONFINED SPACES?,The atmosphere in a confined space may be hazardous for several reasons: The air may have too little or too much oxygen. The atmosphere may be toxic or explosive. Confined spaces could also have some of the physical hazards.,TOO LI
14、TTLE / TOO MUCH OXYGEN IN CONFINED SPACES,Lack of oxygen is a leading cause of death among workers entering confined spaces. Low oxygen levels cannot be detected by sight or smell. You must test the air for this hazardous condition. A very low level of oxygen can damage the brain and cause the heart
15、 to stop after a few minutes. What causes oxygen deficiency? Here are some common causes of oxygen deficiency (not enough oxygen) in a confined space: Oxygen is used up when metals rust. Oxygen is used up during combustion for example, by propane space heaters, during cutting or welding, and by inte
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