Two approved maintenance jobs remove both nominal paths
A fictional facility has two nominally redundant paths supporting an IT service. Separate maintenance requests each propose work on one path, and each worksheet assumes the other will remain available. The supplied schedule places both jobs in the same period, with different contractors and no combined dependency review. A colleague proposes proceeding because both individual work orders are approved. Another asks the responsible qualified coordinators to review the combined service state, authority and recovery conditions before any work. This written case performs no switching, inspection or maintenance. It tests why isolated approvals do not establish safe combined resilience and how accountable communication and a current topology matter to actual service protection.
1. What assumption conflicts?
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Each plan assumes the other path remains available, but the simultaneous schedule defeats that assumption. Two isolated approvals do not establish an acceptable combined state.
2. What should occur before work?
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The qualified authorized coordination process should reconcile actual topology, affected load, schedule, safety, communication and recovery. Do not improvise switching or proceed on an unverified redundancy assumption.