The HSA has been called on to carry out an urgent inspection of Sligo University Hospital over risks of fire safety, injury and infection risks linked to overcrowding.
The Irish Nurses and Midwives Organisation is highlighting the dangers facing staff and patients to repeated high levels of attendence at the North Western Hospital.
According to the Union, 5,901 patients having been treated on trolleys since January at the facility with 27 people waiting for a bed today.
The risks are due to the large numbers of patients being treated in corridors on trolleys and chairs with staff concerned about the ability to safely evacuate in the event of a fire.
The INMO says that the added pressure from these risks increases the workload and pressures on staff, leading to stress and increasing risk of trauma and burnout