Text For Citation: 01 Item/Group: 002 Hazard:

29 CFR 1910.119(d)(3)(ii): The employer shall document that equipment complies with recognized and generally accepted good engineering practices: On or about July 13, 2017, the employer had determined to use International Institute of Ammonia Refrigeration (IIAR) Bulletin No. 114 (1991) "Identification of Ammonia Refrigeration Piping and System Components" as the recognized and generally accepted good engineering practices (RAGAGEP) for labeling of piping systems and components. The employer did not document that the piping systems and component labeling complied with the determined RAGEGEP when: a) Components were not labeled with the equipment's pressure level (HIGH in red, or LOW in green), including but not limited to Liquid Transfer and Recirculation tanks LR1 LR2 LA1 LA2 LA3 LA4 and a Transfer Drum located in the compressor room. b) The phase and pressure abbreviations on two (2) High Temp Recirculated Liquid (HTRL) pipes' labels were not highlighted with the appropriate colors. One label was located behind LR2 and the other was located to the left of LR1. c) The phase and pressure abbreviations on a High Stage Suction (HSS) pipe and on a High Gas Defrost (HGD) pipe were not highlighted with the appropriate colors. Those pipes were vertical runs located on the roof of the building adjacent to the northernmost pressure relief stack. d) The main lines below LR1 were not labeled with the abbreviations, physical state, ammonia, or pressure level. The main lines not labeled included, but were not limited to the High Temperature Recirculated Suction (HTRS) and HTRL lines on the left side of the LR1 vessel.