Text For Citation: 01 Item/Group: 018 Hazard:

29 CFR 1910.119(d)(3)(i)(D): Process Safety Information. Information pertaining to the equipment in the process shall include: Relief system design and design basis: Relief system design and design basis information was not compiled, documented and maintained for the following processes and process equipment, including but not limited to: a. Chlorination department, 40R reactor: relief system design and design basis information for the reactor had not been maintained and kept up to date. PSI compiled for the 40R process involved a list of eight relief devices (cross referenced to piece of equipment) with information for each device. The information only included the result (the set points for pressure), the fire, and the two phase flow scenario used in the basis. There was no documentation of calculations for the design, and no evaluation for piping or safe venting location associated with these relief devices. Four of the devices listed in the PSI were not identified by type (rupture disk, pressure relief valve, etc.). Additionally, the piping and instrument diagram (P&ID) identification or page number was from a format that was no longer used by the employer and could not be used to cross reference this information on an active P&ID for the process equipment or relief device. b. Phosphites department, 133T phosphorous trichloride (PCl3) storage tank: none. c. Chlorination department, 200T bromine storage tank: none. d. Chlorination department, 20 reactor system: none. e. Chlorination department, Chlorine unloading and vaporizer process: none. f. Chlorination department, 18R/19R reactor process: none. g. Chlorination department, 49R reactor process: none. h. Chlorination department, 4R/5R reactor process: the relief device design and design basis information for the #77 exchanger (5R condenser), #82 exchanger (jacket heater), #119 exchanger, 4R reactor and 5R reactor sizing calculations were not documented and maintained. i. Chlorination department, 1R/2R reactor process: none. j. Chlorination department, 45R and 1P acid absorbers system process: none. k. Phosphites department, 51R reactor process: none. l. Phosphites department, 34R reactor process: none. m. Phosphites department, 35R reactor process: none. n. Phosphites 72R reactor process: none. o. Phosphites 44R reactor process: none.