What are the two types of triggers used in maintenance systems?

In the context of maintenance systems, the correct identification of the two types of triggers is critical for effective management of maintenance activities. Global triggers pertain to system-wide events or conditions that necessitate maintenance actions, affecting multiple units or systems across a broader scale. These triggers typically arise from factors like overall usage patterns or employed performance metrics that can highlight maintenance needs at a macro level.

Local triggers, on the other hand, are specific to individual units or particular systems. They are often related to localized conditions, such as specific equipment failures, wear-and-tear indications, or operational issues that only impact a particular part of the operation. Understanding these triggers allows maintenance managers to prioritize actions effectively based on the scale and impact of the issues being addressed.

The other options provide types of classifications that do not fundamentally capture the trigger-based approach to maintenance. Static and dynamic refer more generally to the nature of systems rather than maintenance triggers specifically. Major and minor suggest a tiered system of issue severity, which is not the primary focus in understanding triggers. Scheduled and unscheduled might relate to the timing of maintenance activities but fail to clarify the underlying mechanisms that prompt those activities. Thus, the distinction between global and local triggers is essential for tailoring maintenance strategies to address both widespread and individualized