Confined spaces may not be your only dangerous pit-falls!
Think you’ve identified all of your facility hazardous spaces? You may want to take a closer look! It's easy to identify manholes, tanks, and certain equipment as confined spaces. However, some areas that fit OSHA’s definition of confined space may not be as obvious. This became painfully clear for a resort facility in Vermont in July 2023.
Who else could drown?
Following a report of a missing child, staff members at a Vermont resort discovered a water-filled hole in a grassy area on the facility grounds. The child was eventually rescued from the entrance to an underground water storage tank. Sadly, the child succumbed to injuries a few days later. This incident could have been anyone, especially a worker exposed to the area daily.
The 12 by 6 by 6-foot tank had a cover, but the incident investigation revealed the cover wasn’t secured and there were no danger signs of the water tank below the earth’s surface. An OSHA investigation of the incident resulted in six “serious” violations and fines originating at $31,253, including failure to identify a permit-required confined space while allowing workers to enter the tank twice per year.
OSHA highlights in their "Confined Spaces in Construction: Pits Fact Sheet" that specific confined space hazards in pits have led to worker deaths including:
- Two workers suffocated while attempting to close gate valves in a valve pit.
- A worker lost consciousness, fell, and was killed while climbing down a ladder into an unventilated underground vault to turn on water valves.
- An equipment repair technician died from burns and suffocation after falling into an industrial waste pit while replacing a steam-operated vertical pump.
What is a confined space ?
OSHA considers a confined space as an area that is large enough for workers to enter, isn’t designed for continuous occupancy and has a limited or restricted means of exit or entry. People working in confined spaces face life-threatening hazards including asphyxiation, toxic substances exposure, electrocutions, and fires or explosions.
How can confined space catastrophes be prevented?
Compliance with OSHA’s confined space regulations requires employer to:
- Identify all confined space and permit-confined spaces at worksites. These may include water tanks, sump pits, valve pits/vaults, electrical pits/vaults, steam pits/ vaults, vehicle service/garage pits, elevator pits, dock leveler pits, industrial chemical waste pits, etc. Learn from non-work-related confined space fatalities and apply learnings to all company facilities.
- Communicate with workers about the existence, location, and dangers posed by each permit-required confined space, and that they may not enter such spaces without authorization.
- Establish pre-entry planning procedures that include work site evaluations by a competent person, classification of the confined space, identify means of entry/exit, and proper monitoring and permitting of the space.
- Provide adequate equipment for rescues, such as: atmospheric monitors, fall protection, extraction equipment, and self-contained breathing apparatus (SCBA) for the particular permit-required confined spaces.
- Confirm that the space is monitored for hazards and effective communication can be maintained between attendants, workers and contractors.
- Develop and implement procedures for summoning rescue or emergency services;
- Inspect confined spaces regularly to ensure pits are covered, covers are secure with bolts or other means that prohibit easy entry.
- Implement additional protective means, such as appropriate danger signs, additional grating to prevent entry when pit covers are removed, or permanent securement of unused spaces.
Key to remember: Workplace confined spaces may not be readily obvious. Employers can also learn from non-workplace fatalities to identify confined spaces and implement controls to protect their workers from the same fate.