保守・点検管理システム

# Personal Development Project
A comprehensive web-based business system for managing air conditioning, servers, manufacturing equipment, refrigeration systems, and store facilities owned by enterprises—covering equipment registration, periodic inspections, anomaly detection, repairs, recovery, history, and maintenance KPIs in an integrated workflow.

Main Features

• Equipment Registry Management – Register, edit, and generate QR codes for equipment information
• Periodic Inspection Planning – Auto-generate inspection schedules from daily to annual cycles, with custom intervals
• Inspection Templates – Customize inspection items by equipment type (status judgment, numerical values, text)
• Inspection Checklists – Record measured values, comments, and photo references
• Anomaly Detection & Incidents – Automatically convert anomaly judgments into repair requests
• Repair Workflow – Assignment → Response → Record cause, work, and parts → Confirm recovery
• Asset History Timeline – Integrated display of installation, inspection, anomalies, repairs, and recovery
• Maintenance KPIs – Auto-calculate MTTR (Mean Time To Repair), MTBF (Mean Time Between Failures), and inspection deadline compliance rate
• Alert Management – Visualize inspection deadline overruns, unaddressed anomalies, extended downtime, and repair deadline overruns
• QR & Mobile Support – Equipment verification and inspection initiation via QR code scanning
• Role Management – Permission separation for inspection staff, maintenance staff, and administrators

Characteristics

• Upon inspection completion, if anomalies are detected, they automatically convert to incidents within the same operation
• Downtime is measured precisely from actual stoppage to recovery confirmation, not from work start time
• Cycle calculations maintain the anchor date on a monthly basis, returning to the original schedule even after delays
• All state transitions and major operations are recorded in audit logs
• Once templates are defined by equipment type, already-generated inspection records remain unchanged (snapshot preservation)
• TypeScript domain layer validates state transitions and permissions, preventing unauthorized process skipping