The PSA nitrogen generator for oil and gas industry produces nitrogen on-site inside plant workshops by pressure swing adsorption technology, widely used for tank blanketing, pipeline purging, inert protection during equipment maintenance and process replacement. Oil and gas workshops belong to high-risk explosion-proof operation zones with persistent flammable oil and gas vapors. The layout, equipment selection, operation procedures and safety protection of such workshops differ greatly from ordinary industrial workshops. The full management of PSA nitrogen generators inside oil and gas workshops, covering preliminary workshop planning, equipment delivery and installation, daily operation duty, inspection and maintenance, hazard investigation and emergency response, is carried out around three core requirements: explosion prevention, suffocation protection and pressure control. It builds a workshop operation system adapted to oil and gas process scenarios and guarantees the safety of on-site inert gas supply.

　　Workshop layout planning is the primary task for deploying PSA nitrogen generators inside oil and gas workshops. Nitrogen generator rooms in oil and gas plants are generally built independently, preferably on the upwind side of process units, far away from oil storage tanks, loading/unloading ports and combustible gas release sources, to reduce risks of oil and gas diffusion entering the equipment zone. Workshop dimensions must reserve sufficient space for maintenance and ventilation passages. Maintenance clearance shall be reserved around the front, rear and both sides of the equipment. The unit must not be placed close to walls, pipelines or other explosion-proof equipment. Considering the hazardous explosion classification of oil and gas workshops, all electrical components and instruments in the generator room adopt explosion-proof matched components. Cables are routed inside explosion-proof conduits, and casings are reliably grounded to prevent static accumulation and electric sparks that may ignite surrounding flammable mixtures. The workshop floor uses anti-static hardened flooring to reduce static electricity generated by friction; the ground remains level to facilitate skid-mounted equipment positioning and pipeline disassembly, and to prevent accumulated water soaking pipelines and electrical components at the bottom of equipment.

　　Ventilation systems form the most fundamental safety guarantee for oil and gas nitrogen generation workshops and cannot be simplified. In the cyclic process of pressurized adsorption and depressurized regeneration, PSA nitrogen generators continuously discharge oxygen-rich exhaust gas. Meanwhile, nitrogen leakage can displace oxygen inside enclosed spaces and create suffocation hazards. Therefore, nitrogen generator rooms are equipped with forced mechanical ventilation systems with explosion-proof fans to maintain continuous air exchange inside the workshop. Natural ventilation alone is prohibited in sealed rooms. Ventilation systems interlock with oxygen content analyzers and combustible gas detectors inside the workshop. Once abnormal readings are detected, ventilation power automatically increases to rapidly replace indoor air. Air inlets and exhaust outlets are properly arranged: air intakes are set at the lower part of the workshop and exhaust vents at the upper part to ensure air convection and prevent nitrogen accumulation in low-lying corners. Ventilation ducts avoid crossing flammable gas pipelines to reduce mutual interference from pipeline intersections. Warning signs are installed at workshop entrances, marking inert gas hazards and access requirements. Unauthorized personnel are forbidden to enter nitrogen generator rooms.

　　Equipment delivery and workshop installation must strictly follow construction specifications of oil and gas plants. PSA nitrogen generators are mostly skid-mounted integrated units. Before positioning inside the workshop, combustible gas detection shall be performed in the workshop area, and construction hoisting and positioning can only start after confirming gas concentration is within safe limits. The compressed air pretreatment unit, adsorption towers, gas buffer tanks, pressure regulating pipelines and explosion-proof PLC control cabinets are arranged sequentially according to drawings. After welding and flange connection of high-pressure pipelines, air tightness pressure tests are carried out to inspect leakage risks at welds and sealing surfaces. All gas pipelines inside the workshop are clearly labeled with medium, flow direction and pressure parameters. Nitrogen outlet pipelines directly connect to the workshop process pipe network, fitted with shut-off valves, safety valves, pressure gauges and other safety accessories. Safety valves are calibrated regularly to ensure reliable pressure relief during overpressure. Pipeline layout inside the workshop minimizes flange joints to reduce leakage points. Pipeline supports adopt anti-static bonding to maintain equal potential along the whole pipeline. After installation, joint acceptance is organized by multi-department teams including process, safety and equipment teams, verifying explosion-proof certificates and test reports. Linked tests are performed for ventilation, gas detection and alarm interlock functions. The equipment can only be handed over for trial operation after acceptance passes.

　　Standardized team operation procedures are established for daily workshop operation and on-duty management. Operators in oil and gas workshops must receive special training, master PSA nitrogen generation principles, workshop hazards, instrument alarm definitions and emergency response workflows, and hold valid certificates before taking posts. Before startup, operators inspect combustible gas and oxygen detectors inside the workshop, confirm normal ventilation systems, check pressures of air compressors, filters and adsorption towers, and verify valve status. During equipment operation, workshop environmental parameters, nitrogen purity, outlet pressure and adsorption tower switching status are recorded periodically. Real-time operating data of the nitrogen generator is connected to the workshop DCS system to support remote monitoring and over-limit alarms. On-duty staff are prohibited from long-time solo work inside sealed nitrogen generator rooms. When entering the generator room for inspection, personnel carry portable oxygen detectors and combustible gas alarms. If workshop instruments trigger alarms during operation, operators quickly judge alarm types, confirm whether it is excessive combustible gas, oxygen deficiency or abnormal pressure, respond according to pre-set plans and shut down equipment and evacuate personnel when necessary. Flammable debris such as oil, cotton yarn and plastic packaging materials are forbidden inside the workshop. Access passages of the generator room are kept clean and unobstructed to eliminate fire hazards.

　　Workshop inspection and preventive maintenance are key to extending equipment service life and reducing unexpected workshop failures. Daily, weekly and monthly maintenance schedules are formulated for the workshop. Routine inspections mainly check ventilation fans, gas detectors, explosion-proof control cabinets and pipelines for condensation, abnormal noise and leakage. Filter pressure differentials are checked regularly, and air filter elements and desiccants are replaced on schedule to prevent dust and oil contamination entering adsorption towers and damaging carbon molecular sieve. As the core adsorption medium, carbon molecular sieve is more prone to failure in humid, oil-gas workshop environments. Its performance must be monitored during maintenance, and decay of nitrogen output and purity shall be assessed periodically. Before maintenance work inside the workshop, energy isolation and gas purging are implemented, with pressure relief, power cut and lockout-tagout procedures to prevent accidental startup of equipment. Maintenance operations are preferably arranged during low-load production periods of the workshop. Warning zones are set up around work areas to block unauthorized access. Used filter elements and spent molecular sieve generated during maintenance are collected uniformly, transferred and disposed of following plant solid waste specifications and shall not be stored inside the workshop for a long time.

　　Risk monitoring and alarm interlock systems form the core safety barrier of the workshop. Fixed combustible gas detectors are installed inside nitrogen generator rooms to monitor oil and gas concentration in the air, while oxygen monitoring probes are deployed to track oxygen deficiency risks. All detection signals feed into the workshop safety instrument system with two-level alarm thresholds. Level-1 early warning prompts on-site inspection; level-2 high alarm triggers forced ventilation and interlocked shutdown when necessary. Audible and visual alarms are fitted both inside and outside the generator room, and alarm signals are transmitted synchronously to the central control room of the workshop so control room teams can promptly learn about abnormalities inside the generator room. Detectors are calibrated regularly to guarantee sensor sensitivity and reliability and avoid false or missing alarms caused by sensor drift. Pressure monitoring points inside the workshop set high and low pressure alarms. Once pipeline overpressure or excessively low pressure occurs, alerts are triggered promptly to prevent abnormal pressure affecting inert protection of downstream processes.

　　Workshop emergency management serves as the final line of safety defense for oil and gas workshop management. Special emergency response plans are compiled for the workshop, covering scenarios including nitrogen leakage, combustible gas accumulation, overpressure and electrical faults. Emergency drills for workshop teams are organized on a regular basis. In case of nitrogen leakage inside the workshop, on-site personnel evacuate the generator room quickly and activate forced ventilation. Blind entry into confined spaces is forbidden. If combustible gas alarms activate, gas and power supplies are cut off immediately, the area is isolated and ignition sources eliminated. Emergency protective equipment including portable detectors, safety goggles, anti-slip safety shoes and respiratory protection gear is equipped near the generator room entrance for easy access. Emergency escape routes are defined clearly inside the workshop with unobstructed passages, intact emergency lighting and evacuation signs. In case of emergencies, on-site workshop staff report incidents to central control and safety management departments immediately for unified command and disposal. Blind handling of dangerous situations by single personnel is prohibited.

　　To sum up, workshop management of PSA nitrogen generators for oil and gas industry is a systematic explosion-proof safety management system. Workshop site selection and layout, ventilation design, explosion-proof electrical installation, team duty, periodic inspection, online detection and emergency plans are closely connected. Oil and gas workshops feature special operating environments with persistent combustible hydrocarbons. Any oversight in workshop management may trigger explosion or oxygen-deficient suffocation accidents. As an on-site inert gas source, PSA nitrogen generators provide stable nitrogen supply for inert protection of storage tanks, pipelines and maintenance work following standardized workshop management schemes. They replace traditional liquid nitrogen cylinder gas supply and reduce transportation risks and storage costs. Continuously implementing workshop management specifications, regularly checking hidden hazards in workshop equipment, instruments and ventilation systems, and improving team safety operation capabilities can fully realize the value of nitrogen generation equipment and guarantee safe and stable operation of oil and gas workshop processes.