ASSE 12080 case studies
ASSE 12080 · Put your knowledge to work in context.
ASSE 12080 - the Certified Legionella Water Safety and Management Specialist credential - is aimed at professionals who build, operate, and audit building water management programs: facilities engineers, infection prevention staff, water treatment and HVAC contractors, environmental health and safety specialists, and outside consultants. The work it targets is practical rather than academic: understanding Legionella ecology and how the organism is aerosolized and transmitted, mapping building water systems to find hazard conditions such as stagnation, dead legs, lukewarm temperature zones, and aerosol-generating devices, then designing a documented program with clear roles, control measures, monitoring points, and pre-agreed response procedures. The ASSE 12080 case studies are 5 cases and about 3,292 words.
1Three Legionnaires' Cases at a Resort With a Spa and Fountain
An 86-room resort hotel receives a call from the local health department: three laboratory-confirmed Legionnaires' disease cases (two urinary antigen positive, one culture confirmed) had onset on June 3, June 19, and July 1, and all three guests stayed in the east wing during the 14 days before onset. The hotel has an indoor whirlpool spa, a lobby decorative fountain, and two evaporative cooling towers.
655 words, about 3 min2Hot Water Below Target in a Bone Marrow Transplant Unit
A 240-bed acute-care hospital completed its water management program 18 months ago. During the annual hazard review, the team finds hot water at the sixth-floor bone marrow transplant (BMT) unit reaches only 44-47 degrees C at distal shower outlets, while the basement water heater is set to 60 degrees C.
659 words, about 3 min3Mixed-Use Building With an Outsourced Spa and a Thin Policy
A property management firm operates a 12-story, 300,000 square foot mixed-use building: eight office floors, a two-floor day spa with two whirlpool tubs and a steam room, and a lobby fountain. The water management program team is the chief engineer, a contracted cooling-tower treatment vendor, and an administrative assistant who keeps the binder.
669 words, about 3 min4Scald Prevention Collides With Legionella Control in a Nursing Home
A 120-bed skilled nursing facility has 40 residents on its memory-care unit. Hot water is generated at 65 degrees C and delivered through a recirculating loop.
643 words, about 3 min5Two Cases in Assisted Living: Verification and Validation Failures
Two Legionnaires' disease cases are reported at a 90-unit assisted living community within eight weeks; one resident died. Both lived in the same wing and used the same communal shower.
666 words, about 3 min