Two-thirds of all confined space fatalities occur among would-be rescuers. To prevent deaths, it is critical to use good confined space entry practices so that there is no need for rescue operations. Remember, even a well-planned rescue can end up as a body retrieval. Rescues can be performed by any employee or a professional rescuer so long as he or she has been fully trained and qualified to act as a rescuer. Qualifications include knowledge of and experience working with all hazards associated with rescue and confined space entry operations.
Confined spaces are deceiving. A confined space often appears to be harmless; no danger signs are apparent and 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.
A confined space emergency is any occurrence inside or outside the space, including failure of hazard control or monitoring equipment, that may endanger authorized confined space entrants. Believe it or not, during emergencies, rescuers end up as confined space fatalities more often than those being rescued. So, why is that? Fatalities can occur when the rescuers:
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 asphyxiation, which may result in brain damage or death.
Planning the rescue is paramount. Make sure rescue team members understand their duties, and practice, practice, practice!
Ensure that the rescuer does not travel a greater distance than allowed by the air supply, self-contained breathing apparatus (SCBA), and escape cylinders. Analyze distance, space configurations, physical obstacles, and total time needed to enter the space, perform rescue operations, and leave the space. Leave the space immediately whenever a problem arises with respiratory protection equipment or whenever the attendant orders evacuation. Everyone involved in a rescue should assume that the space is deadly and that entry rescue may be required in the worst case!
At a minimum, training must include:
Depending on the severity of the emergency, different rescue strategies or methods can be used. When the emergency is minor, self-rescue is often the best approach; however, if the worker is disabled, it is likely that non-entry or entry rescue may need to be used. Entry rescue involves putting others at risk, and should be used only if absolutely necessary.
Self-rescue is vitally important because the entrant is:
It's important that rescuers are provided with vital information so that they can most effectively perform rescue operations. Rescuers will need to know:
It's important to think through the rescue process proactively to make sure it is successful. Rescue plans may involve on-site rescue teams or they may rely on off-site rescue service providers. A thorough rescue plan includes:
It's crucial that members of a rescue team practice simulated confined space rescues for each unique confined space at a facility. Rescue practices in simulated or actual spaces should be performed at least once every 12 months or more frequently if deemed necessary.
Re-evaluate the plan whenever:
Because most rescue service providers are unable to rescue within the four-minute time limit, most employers develop their own rescue teams. At least one on-site rescue team member should be trained in first aid and CPR. Each member of the rescue team should be trained to:
Remember that while the window of opportunity for a rescue is very brief (only four minutes), the response time for an off-site rescue team may be considerably longer. After four minutes have lapsed, the victim could suffer brain damage or die. In some emergencies, rescuers may have even less than four minutes to act. Other situations may allow more time. To make sure your confined rescue plan is effective, make sure you:
If the employer relies on an off-site rescue service, the employer must contact the provider to verify they are available to conduct rescue operations if requested. The verification task is usually assigned to the entry supervisor. If the off-site rescue service indicates for any reason that it would be unable to respond to a rescue summons, entry must not be authorized unless and until an adequate back-up rescue service is arranged and confirmed.
If the worker is physically able to use rescue equipment (safety retrieval line, rope, wristlets, etc.), rescuers may choose not to enter the space. Instead, they can provide appropriate equipment and assistance necessary to bring the worker out of the space (a non-entry rescue). In situations in which the worker is unresponsive, atmospheric hazards are extremely high, or significant time has elapsed before rescuers arrive at the site, emergency rescue personnel may decide that the risks associated with entering outweigh the potential for a successful rescue. If this is the case, rescuers may elect not to go into the confined space until conditions warrant a safe entry.
As mentioned earlier, non-entry rescue is the preferred method for confined space emergencies when self-rescue is not possible. It's important to remember that the confined space Attendant should not perform entry rescue. Rescue requiring entry should be performed by a trained rescue team or emergency service providers.
The importance of having the right rescue equipment on hand can't be stressed enough. Rescue equipment may include:
All authorized entrants and rescuers entering permit spaces are required to use full body harnesses and retrieval lines, unless it is determined that the retrieval equipment would increase the overall risk of entry or would not contribute to the rescue operation.What kind of equipment should be used for lowering or lifting entrants?
Only devices designed by the manufacturer and approved for moving humans should be used. The equipment must enable a rescuer to remove the injured employee from the space quickly without injuring the rescuer or further harming the victim.
If there is even a remote possibility of other atmospheric contaminants, even though monitoring equipment readings appear to be within the normal ranges, rescuers should still use appropriate respiratory protection. Play it safe:
OK... time for that module quiz!
Before beginning this quiz, we highly recommend you review the module material. This quiz is designed to allow you to self-check your comprehension of the module content, but only focuses on key concepts and ideas.
Read each question carefully. Select the best answer, even if more than one answer seems possible. When done, click on the "Get Quiz Answers" button. If you do not answer all the questions, you will receive an error message.