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Mantenimiento

Planned Shutdown

A scheduled and pre-arranged temporary cessation of production for the specific purpose of performing preventive maintenance, major inspections, equipment upgrades, repairs identified by predictive maintenance, and regulatory compliance activities that cannot be performed while the equipment is operating. Planned shutdowns (also called turnarounds in process industries) are dramatically more cost-effective than unplanned shutdowns because: parts are pre-ordered (standard pricing, no premium), labor is scheduled (no overtime premium), work is pre-planned (detailed scope, procedures, and sequence), safety preparations are thorough (permits, LOTO, confined space), and production can build buffer inventory in advance. Planning horizon: annual major shutdowns (1-4 weeks for process plants), quarterly mini-turnarounds, and regular shift shutdowns for routine PM. Critical path method (CPM) and project management techniques optimize shutdown duration — every hour of planned shutdown still costs lost production. Typical activities during planned shutdowns: bearing and seal replacements, belt and chain replacements, alignment verification, vessel inspections (API 510, API 570), safety system testing, calibration, and cleaning. Per ISO 55000 (asset management), API 510/570 (inspection intervals), and plant-specific turnaround procedures.

What you need to know

  • A scheduled and pre-arranged temporary cessation of production for the specific purpose of performing preventive maintenance, major inspections, equipment upgrades, repairs identified by predictive maintenance, and regulatory compliance activities that cannot be performed while the equipment is operating.
  • Planned shutdowns (also called turnarounds in process industries) are dramatically more cost-effective than unplanned shutdowns because: parts are pre-ordered (standard pricing, no premium), labor is scheduled (no overtime premium), work is pre-planned (detailed scope, procedures, and sequence), safety preparations are thorough (permits, LOTO, confined space), and production can build buffer inventory in advance.
  • Planning horizon: annual major shutdowns (1-4 weeks for process plants), quarterly mini-turnarounds, and regular shift shutdowns for routine PM.
  • Critical path method (CPM) and project management techniques optimize shutdown duration — every hour of planned shutdown still costs lost production.
  • Typical activities during planned shutdowns: bearing and seal replacements, belt and chain replacements, alignment verification, vessel inspections (API 510, API 570), safety system testing, calibration, and cleaning.

Full definition

A planned shutdown refers to a pre-scheduled temporary halt in production operations, specifically designed to facilitate preventive maintenance, comprehensive inspections, equipment upgrades, repairs identified through predictive maintenance strategies, and adherence to regulatory compliance. These shutdowns are crucial for ensuring the longevity and reliability of production equipment and systems. Unlike unplanned or emergency shutdowns, which can lead to significant financial losses due to unexpected downtime, planned shutdowns allow for meticulous preparation and execution of maintenance tasks. By scheduling these events, companies can strategically manage resources, both in terms of labor and materials, thereby optimizing the overall maintenance process.

During a planned shutdown, various crucial activities take place, including bearing and seal replacements, belt and chain replacements, alignment checks, and vessel inspections. The American Petroleum Institute (API) provides guidelines for inspections, particularly API 510 for pressure vessels and API 570 for piping systems, which help ensure compliance and safety during these maintenance activities. The planning of these shutdowns typically involves the application of project management techniques such as the Critical Path Method (CPM) to minimize downtime while maximizing efficiency.

Effective planning can significantly reduce costs associated with maintenance activities. For instance, parts can be procured in advance, often at standard prices, avoiding the premiums associated with last-minute orders. Labor can be scheduled efficiently, reducing the necessity for overtime pay and allowing for better allocation of skilled personnel. Moreover, safety preparations, including the implementation of Lockout/Tagout (LOTO) procedures and confined space entry protocols, can be thoroughly addressed, further enhancing the safety and effectiveness of maintenance operations. Overall, planned shutdowns play a vital role in maintaining operational efficiency and safety within industrial plants, allowing for the systematic execution of essential maintenance tasks.

What you need to know

  • What you need to know:
  • Planned shutdowns are pre-scheduled and can last from 1 to 4 weeks, depending on the complexity of the maintenance required.
  • Utilizing project management techniques like CPM can significantly reduce downtime associated with maintenance activities.
  • Major activities during planned shutdowns include bearing replacements, belt replacements, and compliance inspections per API standards.
  • Effective planning allows for the pre-ordering of parts, saving costs and avoiding overtime labor expenses.
  • Safety measures including LOTO and confined space entry are crucial during planned shutdowns to protect personnel.

Industrial applications

  • 1Scheduled maintenance in manufacturing plants to replace critical components.
  • 2Turnarounds in refineries for comprehensive inspections and upgrades.
  • 3Routine inspections and maintenance for compliance with safety regulations in chemical processing facilities.
  • 4Implementation of predictive maintenance strategies that require equipment to be offline for analysis and repair.
  • 5Annual major shutdowns for equipment overhauls in power generation facilities.

Common mistakes

  • ✕Failing to accurately forecast the duration of the shutdown, leading to extended downtime.
  • ✕Neglecting to involve key personnel in the planning phase, which can result in overlooked maintenance tasks.
  • ✕Inadequate safety preparations that can lead to accidents or compliance violations during shutdown activities.
  • ✕Insufficient inventory of critical spare parts, causing delays in maintenance tasks.
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Pro tip

Involve cross-functional teams early in the planning process to ensure all aspects of maintenance, safety, and compliance are addressed efficiently.

Technical standards

  • ISO 55000 - Asset management standards for the maintenance process.
  • API 510 - Guidelines for the inspection of pressure vessels.
  • API 570 - Guidelines for the inspection of piping systems.

Suppliers of industrial maintenance in Mexico

AguascalientesVer Bandas Industriales
Ciudad JuárezVer Bandas Industriales
Ciudad de MéxicoVer Bandas Industriales
GuadalajaraVer Bandas Industriales
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Applicable standards

ISO 55000
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