An employer designating rescue and emergency services under 1926.1204(i) must assess whether a prospective rescuer can respond in a timely way given the hazards (timeliness varies with the hazard; for IDLH atmospheres 1926.103 requires standby persons capable of immediate action), and its proficiency with rescue tasks and equipment for the particular permit spaces. It selects a team or service that can reach victims within a time frame suited to the hazards, is equipped and proficient, and agrees to notify the employer immediately if it becomes unavailable; informs the service of the hazards it may confront at the site; and gives it access to every permit space from which rescue may be needed so it can plan and practise. An employer whose own employees are designated rescuers provides equipment and training at no cost: PPE for safe rescue with proficiency training in its use; training in assigned rescue duties plus completion of the authorized entrant training and proficiency under 1926.1207 and 1926.1208; training in basic first aid and CPR, with at least one team member holding current first aid and CPR certification available; and practice rescues before any real rescue and no less often than every 12 months, removing dummies, manikins or people from the actual spaces or representative spaces that simulate opening size, configuration and accessibility. Practice is not required if the employees properly performed a rescue in the previous 12 months in the same or a similar permit space. Non-entry rescue is required unless retrieval equipment would raise overall risk or would not help the rescue; if non-entry rescue is not selected, an entry rescue service must be designated. When non-entry rescue is chosen, retrieval systems or methods must be in use each time an entrant goes in, and the entry employer confirms before entry that emergency help is available if non-entry rescue fails. Each entrant wears a chest or full body harness, the line fixed at the middle of the back near shoulder level, above the head, or another point shown to give a small enough profile; wristlets or anklets are allowed only where the harness is shown infeasible or more hazardous. The line's other end is anchored outside the space to a fixed point or mechanical device so rescue can start immediately, and a mechanical device must be available for vertical spaces deeper than 5 feet (1.52 meters). Unsuitable retrieval equipment, such as lines likely to tangle with others or that will not work in the space's configuration, must not be used. If an injured entrant was exposed to a substance for which an SDS or similar written information must be kept on site, that document is made available to the treating medical facility.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.