Document evgK2nGYyZBXQyro57N0zXBOe

ITEM 6 Cconoco) Interoffice Communication To From Date Subject Process Engineers V. E. Messick January 27, 1983 SAFETY EVALUATION OF PROCESS DESIGNS Every process design that is issued should give the utmost consideration to the safety of the design. To insure that proper safety consideration is given to process designs, each process design issued from now on will be evaluated for safety considerations and a summary of the evaluation is to be included in the design. The following is a list of items that should be considered in the evaluation where applicable: 1) Properties of any chemicals or additives to be used or added in a process. a) skin or eye irritation problems b) dusting c) flammability d) toxicity 2) Any problems with splashing or spilling of liquids. 3) Safety problems with pressurized systems. 4) Explosion hazards. 5) Safety hazards of lifting materials. 6) Hot surfaces that could be exposed. 7) Any possibilities of fires. 8) Adequate facilities to evacuate, clean, or flush VCM contami nated equipment to reduce the possibility of exposure to VCM. 9) Problems with pluggage that could cause equipment to exceed their design pressures. 10) Interlocks to prevent unsafe operation of equipment. 11) Failure mode of equipment and valves. DTH 000CM3Q6Q* Process Engineers January 27, 1983 Page 2 12) Possible hand trap situations. 13) Leakage of hot or corrosive materials. 14) Safety considerations for maintenance access and entry of equipment. 15) Possible problems caused by equipment, valve, or instrumenta tion failure. 16) Potential for static generation due to fluid flow or free fall. 17) Handling method V.S. classification of material (i.e. combusti ble liquids handled at elevated reclassified as flammable). 18) Body position requirements that could cause strain or muscle injury. 19) Pressured expulsion due to backflow in piping. 20) Cross contamination of services due to backflow. 21) Safe means of checking equipment performance. I am sure that there are many items not mentioned that are important to the individual project. The idea is to anticipate safety problems and correct them before the process design is issued. If you have any other ideas or suggestions on this, please let me know. Veldon E. Messick Senior Process Engineer bis c: JF, CRM, CRS, JAD, AHS DTH 000042861