R 408.12619
R 408.12619 Hydraulic and pneumatic systems.
Cite as Mich. Admin. Code R 408.12619
Rule 2619. (1) A hydraulic or pneumatic system shall be designed and
constructed to have a safety factor of not less than 4.
(2) Hydraulic or pneumatic flexible lines shall be protected from chaffing.
(3) When hydraulic, air or steam lines are bled, equipment supported by these
systems shall be physically blocked or otherwise secured by means other than
components in the circuit, to provide for the safety of employees working on or
about the equipment.