title = "Preventive Maintenance Schedules and Checklists"

content = """
Preventive Maintenance (PM) schedules define the tasks, intervals, and responsibilities for maintaining each equipment asset at Ridgecrest Metalworks. A well-designed PM schedule reduces unplanned downtime, extends equipment life, and ensures that machinery operates within its designed parameters for safety and accuracy.

PM schedules are developed from three sources:
- Manufacturer's maintenance manuals: The OEM specifies service intervals, lubrication types, and replacement schedules based on the design of the equipment
- Operational experience: Ridgecrest's maintenance history identifies components that fail prematurely or require more frequent attention under actual production conditions
- Industry standards and regulatory requirements: Certain equipment (overhead cranes, pressure vessels, forklifts) has legally mandated inspection intervals

PM intervals are defined in time (daily, weekly, monthly, quarterly, annually) or by operating hours. Production equipment with continuous operation is tracked by hourmeter; intermittently used equipment is managed on calendar intervals.

PM checklist format: Each PM task has a written checklist that defines exactly what must be inspected, serviced, or replaced. Effective checklists include:
- Equipment identity (name, plant number, location)
- Interval and trigger condition
- Step-by-step tasks with pass/fail criteria and measurements where applicable
- Required tools, lubricants, and consumables
- Safety precautions (LOTO required, stored energy release, pinch point warnings)
- Sign-off spaces for technician and supervisor

Examples of typical PM tasks at Ridgecrest:
- Daily: Check hydraulic oil level, inspect cylinder seals for leaks, verify coolant level and concentration, check coolant strainer, inspect belts for wear and tension
- Weekly: Clean coolant tank sediment, check way lubrication system, test safety interlocks and emergency stops, inspect air filter condition
- Monthly: Change gearbox oil (per hour limit), lubricate linear guides and ballscrews, check spindle bearing temperature during run, inspect brake condition on hoists
- Annually: Full electrical panel inspection, motor insulation resistance test, pressure vessel NDT inspection, crane SWL test

PM compliance is tracked in the computerized maintenance management system (CMMS). Upcoming PMs are scheduled automatically; overdue PMs trigger supervisor escalation. PM compliance rate (percentage of PMs completed on time) is a maintenance KPI reviewed monthly.
"""

version = "0.0.1"
