The person with management or control of plant with a presence-sensing safeguarding system keeps records of safety integrity tests, inspections, maintenance, commissioning, decommissioning, dismantling and alterations for 5 years, or for the life of the plant or until control is relinquished if it is registered or altered, keeps them available for inspection and passes them to anyone taking control.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.