What does a cryogenic facility require and what do HFEA inspectors check that most labs underestimate?
HFEA inspections of cryogenic storage areas routinely identify the same infrastructure gaps. Fixed oxygen depletion monitoring is the most frequently cited deficiency – many facilities install portable monitors that are moved between rooms or left uncharged rather than fixed units with continuous logging. A room storing more than a few litres of liquid nitrogen requires a fixed oxygen depletion alarm calibrated to trigger at 19.5 per cent oxygen concentration, with the alarm positioned at breathing height not ceiling level.
Beyond monitoring, inspectors check that access to cryogenic storage is controlled and logged, that vessels are identifiable and matched to inventory records, that staff training records for cryogenic handling are current, and that emergency procedures are displayed and understood by all relevant staff. Infrastructure requirements include adequate ventilation with a minimum air change rate appropriate for the liquid nitrogen volume stored, non-porous flooring resistant to cryogenic spillage, and clear segregation from heat sources. Cryolab has supplied cryogenic storage vessels and laboratory safety equipment to NHS fertility units and private IVF clinics preparing for HFEA inspection for over 40 years. Contact us for an equipment review ahead of your next inspection.
