Enum: MaintenanceTypeEnum

Types of nuclear facility maintenance activities

Permissible Values

Value	Meaning	Description
PREVENTIVE_MAINTENANCE	None	Scheduled maintenance to prevent equipment failure
CORRECTIVE_MAINTENANCE	None	Maintenance to repair failed or degraded equipment
PREDICTIVE_MAINTENANCE	None	Maintenance based on condition monitoring
CONDITION_BASED_MAINTENANCE	None	Maintenance triggered by equipment condition assessment
REFUELING_OUTAGE_MAINTENANCE	None	Major maintenance during scheduled refueling
FORCED_OUTAGE_MAINTENANCE	None	Unplanned maintenance due to equipment failure
IN_SERVICE_INSPECTION	None	Required inspection of safety-related components
MODIFICATION_WORK	None	Changes to plant design or configuration

Slots

Name	Description
maintenance_type	Type of nuclear facility maintenance activity

Identifier and Mapping Information

Schema Source

from schema: https://w3id.org/linkml/valuesets

LinkML Source

name: MaintenanceTypeEnum
description: Types of nuclear facility maintenance activities
from_schema: https://w3id.org/linkml/valuesets
rank: 1000
permissible_values:
  PREVENTIVE_MAINTENANCE:
    text: PREVENTIVE_MAINTENANCE
    description: Scheduled maintenance to prevent equipment failure
    annotations:
      schedule:
        tag: schedule
        value: predetermined intervals
      purpose:
        tag: purpose
        value: prevent failures
      planning:
        tag: planning
        value: extensive advance planning
      outage_type:
        tag: outage_type
        value: planned outage
    title: Preventive Maintenance
  CORRECTIVE_MAINTENANCE:
    text: CORRECTIVE_MAINTENANCE
    description: Maintenance to repair failed or degraded equipment
    annotations:
      trigger:
        tag: trigger
        value: equipment failure or degradation
      urgency:
        tag: urgency
        value: varies by safety significance
      planning:
        tag: planning
        value: may be immediate
      schedule:
        tag: schedule
        value: unplanned
    title: Corrective Maintenance
  PREDICTIVE_MAINTENANCE:
    text: PREDICTIVE_MAINTENANCE
    description: Maintenance based on condition monitoring
    annotations:
      basis:
        tag: basis
        value: condition monitoring data
      timing:
        tag: timing
        value: based on predicted failure
      efficiency:
        tag: efficiency
        value: optimized maintenance timing
      technology:
        tag: technology
        value: condition monitoring systems
    title: Predictive Maintenance
  CONDITION_BASED_MAINTENANCE:
    text: CONDITION_BASED_MAINTENANCE
    description: Maintenance triggered by equipment condition assessment
    annotations:
      assessment:
        tag: assessment
        value: continuous condition monitoring
      trigger:
        tag: trigger
        value: condition degradation
      optimization:
        tag: optimization
        value: resource optimization
      safety:
        tag: safety
        value: maintains safety margins
    title: Condition-Based Maintenance
  REFUELING_OUTAGE_MAINTENANCE:
    text: REFUELING_OUTAGE_MAINTENANCE
    description: Major maintenance during scheduled refueling
    annotations:
      frequency:
        tag: frequency
        value: every 12-24 months
      scope:
        tag: scope
        value: major equipment inspection and repair
      duration:
        tag: duration
        value: 30-60 days typical
      access:
        tag: access
        value: full plant access available
    title: Refueling Outage Maintenance
  FORCED_OUTAGE_MAINTENANCE:
    text: FORCED_OUTAGE_MAINTENANCE
    description: Unplanned maintenance due to equipment failure
    annotations:
      cause:
        tag: cause
        value: unexpected equipment failure
      urgency:
        tag: urgency
        value: immediate attention required
      duration:
        tag: duration
        value: variable
      safety_significance:
        tag: safety_significance
        value: may affect safety systems
    title: Forced Outage Maintenance
  IN_SERVICE_INSPECTION:
    text: IN_SERVICE_INSPECTION
    description: Required inspection of safety-related components
    annotations:
      regulatory_requirement:
        tag: regulatory_requirement
        value: mandated by regulations
      frequency:
        tag: frequency
        value: specified intervals (typically 10 years)
      scope:
        tag: scope
        value: pressure vessels, piping, supports
      techniques:
        tag: techniques
        value: non-destructive testing
    title: In-Service Inspection
  MODIFICATION_WORK:
    text: MODIFICATION_WORK
    description: Changes to plant design or configuration
    annotations:
      purpose:
        tag: purpose
        value: plant improvement or regulatory compliance
      approval:
        tag: approval
        value: requires design change approval
      testing:
        tag: testing
        value: extensive post-modification testing
      documentation:
        tag: documentation
        value: comprehensive documentation updates
    title: Modification Work