{"L1_core": {"domain": "construction", "category": "installation", "entity_type": "process"}, "L2_process": {"types": {"piping": {"description": "Fluid transport systems"}, "electrical": {"description": "Power and control systems"}, "mechanical": {"description": "Equipment and machinery installation"}}, "standards": ["ISO 45001", "IEC 60364", "EN 1090"], "parameters": {"complexity_level": ["simple", "medium", "complex"], "certification_required": true}}, "L5_metadata": {"updated": "2026-01-04", "version": "2.0"}, "L3_relations": {"applies_to": ["machinery", "electrical_systems", "hvac", "plumbing"], "related_processes": ["commissioning", "testing", "maintenance"]}}