Why Is Atmospheric Testing Important Before Entering a Confined Space?
Confined spaces pose a number of atmospheric hazards that present some of the deadliest risks one could face when working in a confined space. Toxic gases, low oxygen, explosive atmospheres, etc. can take a normal task and turn that into someone’s last task.
As part of an overall safety program for working in confined spaces; atmospheric testing is an extremely important, and sometimes the most important, part of that program.
Why is Atmospheric Testing Performed?
- At all times atmospheric testing is performed to help with the detection of toxic gases: Toxic gases such as hydrogen sulfide (H2S), carbon monoxide, and methane. The human senses are unable to detect many of these gases, but atmospheric test equipment can detect them in extremely low levels, often as low as parts per million.
- Atmospheric testing is performed to monitor oxygen content: Often confined spaces are poorly ventilated, which can lead to a low level of oxygen.
- Atmospheric testing is performed to check for explosive atmospheres: In an atmosphere where flammable gases or vapors are located, atmospheric testing assures that the confined space is within the allowable limits to allow for a safe entry and operation.
What are the Best Practices When Testing the Atmosphere?
- Continuous Monitoring of the Atmosphere:
Atmospheric testing must be conducted at all times throughout the entire duration of the confined space work. Conditions in the environment can change, therefore, continual testing will help ensure a safe working environment throughout the work.
- Use of Calibrated Equipment:
Atmospheric testing equipment must be calibrated properly to ensure that accurate readings are being provided. Workers must be trained to recognize when atmospheric testing equipment malfunctions.
- Clear Reporting Procedures:
Atmospheric testing results must be recorded and communicated to all workers and supervisors who are involved in confined space work.
Final Thoughts on Atmospheric Testing
Atmospheric testing is performed; to protect workers at job sites by detecting toxic gases such as hydrogen sulfide (H2S), carbon monoxide and methane, to check oxygen levels to make sure that they do not go below the approved levels of safety, and to test for the presence of flammable gas or vapors to determine that the area is below the approved limits for both entry and operation.
The end result is always to protect workers at job sites.