Topics COVID-19 Technical subjects related to PSM elements listed as Lessons: AGEING PLANT ALARM MANAGEMENT BOWTIES CHEMICAL REACTIVITY COMBUSTIBLE DUSTS CYBER SECURITY DESIGN FLAMMABLE ATMOSPHERES FUNCTIONAL SAFETY HAZARD STUDIES HUMAN & Organisational FACTORS LOPA MITIGATION MEASURES NATURAL HAZARDS PRESSURISED & RELIEF SYSTEMS QRA STRUCTURES & SITING WORK MANAGEMENT