This is becoming more common these days; I never encountered it in my career at any of my facilities, as it’s not just a matter of sound engineering. The response I usually get during audits, PHAs, Engineering Code Design reviews is… “show me in the code that says I can’t use a hose on the discharge side of a PRD with a setpoint of X”. And my response is simple… “show me the code which you used to design your PR system and the use of a hose is part of the RAGAGEP”. Codes and Standards cannot include every deviation a person can conjure up; they are meant to draw a box around what is allowed, and anything outside that box is not permitted. In this case, OSHA took issue with the hose as it exposed employees to struck-by hazards…