What pipe is required for a lock out

Source excerpt

# Securing Isolation (cont.) ## Returning to operation (cont.) Section 215.4 OCCUPATIONAL HEALTH AND SAFETY CODE Part 15 AR 191/2021 (b) all personal locks secured by workers under section 214.1,215 or 215.1 are removed, and (c) it is verified that no worker is in danger by the removal of the energy-isolating device or the return to operation of the machinery, equipment or powered mobile equipment. - AR 191/2021 s215.3;242/2022 ## Piping or Pipelines ## Isolation re piping or pipelines 215.4 If piping or a pipeline containing a substance under pressure is to be serviced, repaired, tested, adjusted or inspected, or if any other work is to be performed on it that requires the control of hazardous energy, an employer must ensure that no worker performs such work on the piping or pipeline until flow in the piping or pipeline has been stopped or regulated to a safe level and the location at which the work is to be carried out is isolated and secured in accordance with section 215.5. AR 191/2021 s215.4;242/2022 ## Isolation requirements for piping or a pipeline 215.5(1) To isolate piping or a pipeline containing a substance under pressure, an employer must ensure the use of (a) a system of blanking or blinding, or (b) a double block and bleed isolation system providing (i) 2 blocking seals on either side of the isolation point, and (ii) an operable bleed-off between the 2 seals. - 215.5(2) An employer must ensure that piping or a pipeline that is blanked or blinded is clearly marked to indicate that a blank or blind is installed. - 215.5(3) An employer must ensure that, if valves or similar blocking seals with a bleed-off valve between them are used to isolate piping or a pipeline, the bleed-off valve is secured in the "OPEN" position and the valves or similar blocking seals in the flow lines are functional and secured in the "CLOSED" position. - 215.5(4) An employer must ensure that the device used to secure the valves or seals referred to in s…