PHA-HAZOP Checklist Form Number: {form_number} Ref. MOC No #:(Required)Requested By :(Required)Change Description(Required)Department(Required)Date(Required) MM slash DD slash YYYY I) . ASPECT: HAZARDOUS PRODUCTS AND PROCESS CONDITIONSDoes the change represent an increase in the inventories of hazardous products handled in the system (in the physical area where the change is being(Required) YES NO NA Does the change introduce new chemicals in the process, new mix of undesirable products or hazardous chemical reactions in the system?(Required) YES NO NA Does it change the physical/chemical characteristics that affect the toxicity or flammability of the process products?(Required) YES NO NA Does it change the stability of the chemical reactions that occur during the process?(Required) YES NO NA Does it represent changes in the process parameters (conditions of pressure, temperature, flow, level, concentration) out of the pre-established limits for the systems?(Required) YES NO NA Does it change the existing piping and alignment in the installation?(Required) YES NO NA Does it allow the connection of systems or equipment with different pressures, under normal or abnormal situations?(Required) YES NO NA Does it introduce or change any potential cause for overpressure (undue plugging or blocking of piping or equipment, for example) in the system or part of the system?(Required) YES NO NA Does it introduce or change any potential cause for under pressure / vacuum in the system or part of the system?(Required) YES NO NA Does it affect the safety conditions in case of valve failure (fail safe) in the system?(Required) YES NO NA Does it allow the occurrence of inverted flow of product in the system or part of the system?(Required) YES NO NA Does it allow the formation of explosive atmosphere / mix in the system or part of the system?(Required) YES NO NA Does the change insert or change the location of points for potential leakages of toxic and/or flammable fluids (drains, vents, manholes and others)?(Required) YES NO NA Does it introduce or remove by-pass valves?(Required) YES NO NA Does it difficult the possibility of existing drainages, vents or isolations?(Required) YES NO NA Is there any incompatibility between product and lining of piping, tanks and equipment in the system?(Required) YES NO NA Does it affect the characteristics of safety valves or vacuum breakers already existing in the system?(Required) YES NO NA Does it require placing manual valves at locations with quick access?(Required) YES NO NA Does it require changes in the map of spectacle blinds?(Required) YES NO NA Does it increase or generate static electricity in the system?(Required) YES NO NA Is there any need for grounding?(Required) YES NO NA Does it introduce changes or new procedures for startup, planned shut-down or operation emergencies?(Required) YES NO NA Does it change or introduce new operation routines?(Required) YES NO NA Does it change or introduce procedures for releasing equipment and/or system for maintenance?(Required) YES NO NA ASPECT: INSTRUMENTATION AND INTERLOCKING SYSTEMSDoes it change any instruments related with the existing interlocking?(Required) YES NO NA Does it change the logic control sequence of the equipment or system?(Required) YES NO NA Does it change the range of instruments of the already existing control systems?(Required) YES NO NA Does it Include, exclude or change instruments?(Required) YES NO NA Does it change the CV of valves?(Required) YES NO NA Does it Introduce, exclude or change any alarms of the system?(Required) YES NO NA Does it change the control set–point of instruments?(Required) YES NO NA Does it change any instrument related with the existing algorithms (calculation program)?(Required) YES NO NA Does it change or introduce interlocking?(Required) YES NO NA Does the change remove interlocking?(Required) YES NO NA ASPECT: EQUIPMENTDoes the change represent changes in the physical structure of the equipment?(Required) YES NO NA Does it change specifications of equipment or components?(Required) YES NO NA Does it represent changes in the operation parameters of the equipment (vibration, rotation, torque, wear, pressure, temperature, flow?(Required) YES NO NA Does it represent changes in the materials of construction, lining, painting or insulation of the equipment (Hydrostatic test, X-rays, stress relief, penetrating liquid, and others)?(Required) YES NO NA Does it change the conditions for inspection or maintenance of the equipment?(Required) YES NO NA Is the classification of the area changed?(Required) YES NO NA Is the pressure class of the equipment changed?(Required) YES NO NA ASPECT: NEW EQUIPMENTIs the material of the new equipment compatible with the fluid to be(Required) YES NO NA Are any new interlocks needed?(Required) YES NO NA Is the new equipment appropriate for the classification of the area?(Required) YES NO NA Does it require new conditions for inspection or maintenance?(Required) YES NO NA Does it change the supporting of equipment or piping?(Required) YES NO NA ASPECT: BUILDINGSDoes the change represent changes in buildings (buildings that affect the operation, building containing electric cables or wiring that interfere in the operation)?(Required) YES NO NA Does it represent environmental changes that may interfere in the operation conditions of process control systems (DCS-Distributed Control Systems / PLCProgrammable Logic Controller) causing stops or affecting the functions conducted by the same?(Required) YES NO NA ASPECT: ADMINISTRATIVEDoes it change the number of employees involved with the operation of the systems?(Required) YES NO NA Does the change represent changes in the location of a considerable number of people within the company area. (for example, increasing the number of people present in a control room or administrative buildings)?(Required) YES NO NA Does it represent changes in the location of administrative building or other buildings with possibility of concentration of people?(Required) YES NO NA Does it need the relocation of employees in the area?(Required) YES NO NA ASPECT: LIQUID EFFLUENTS, SOLID WASTE AND GAS EMISSIONSDoes the change generate/increase new liquid effluents, gas emissions or solid waste into the environment?(Required) YES NO NA Is there any need to include new chemical agents in the MSDS – Material Safety Data Sheet, as a function of the change?(Required) YES NO NA Is there any impact due to the effluents generated by the change in the existing treatment installations, including compliance with this new demand (including stabilization systems and effluent drainages)?(Required) YES NO NA Does it change the capacity of the facilities for stabilization or drainage of effluents?(Required) YES NO NA Does it change the drainage system of the installation (type of drainage, realization, change of open drainage to closed drainage or vice-versa)?(Required) YES NO NA Does it have a negative impact on effluent quality (parameters)?(Required) YES NO NA Do applicable laws impose restrictions for the project?(Required) YES NO NA Is the creation of a new solid waste storage area predicted?(Required) YES NO NA Are the gas emissions above the current limits allowed by law?(Required) YES NO NA ASPECT: OCCUPATIONAL HEALTH/ERGONOMICSDoes the change increase the exposure of personnel to noise (frequency, noise level or exposure time), relative to the current exposure?(Required) YES NO NA ASPECT: SAFETYDoes the change hinder the access for emergency equipment or make evacuation of the area difficult?(Required) YES NO NA Are additional safety and/or emergency equipment required?(Required) YES NO NA Does the change increase the risk of personal accidents during the operation of the equipment/system?(Required) YES NO NA Does it affect the safety systems (flare, fire network, sprinklers)?(Required) YES NO NA Does the change affect the condition for conducting test/maintenance of the emergency equipment?(Required) YES NO NA Does it change the Emergency Action Plan or Contingency Plan of the area?(Required) YES NO NA Does it affect the emergency lighting?(Required) YES NO NA Does the change increase the exposure of personnel to chemical agents under normal or abnormal situation, relative to the current exposure?(Required) YES NO NA Does it increase the personal contact with hazardous products, under normal or abnormal situation, different from the products currently(Required) YES NO NA Does it increase the exposure to extreme temperatures (heat or cold), above the(Required) YES NO NA Does it increase the exposure to dust, above the current limits?(Required) YES NO NA Does it increase the exposure to ionizing radiations (frequency, radiation level or exposure time), relative to the current exposure?(Required) YES NO NA ASPECT: MAINTENANCEDoes the change impact the access for maintenance of the equipment or other interconnected equipment?(Required) YES NO NA Does the change impact the access for maintenance of the equipment or other interconnected equipment?(Required) YES NO NA Does it increase the maintenance frequency?(Required) YES NO NA Does it change the existing maintenance procedures?(Required) YES NO NA Does it introduce new maintenance procedures?(Required) YES NO NA Does it introduce new spares requirements?(Required) YES NO NA Does it provide for the use of PPEs that are different for those currently used?(Required) YES NO NA Does it provide for the use of tools that are different from those currently used?(Required) YES NO NA Recommendations / Corrective Actions(Required)Recommendations / Corrective Actions by – Department HOD(Required)
