Operators and / or co-workers are not contactable because of equipment failure, caused by:

  • Communication equipment is inoperable
  • Areas of poor reception
  • Communication not available

 This Credible Failure mode is addressed by:

  • BI-01D.01 Trained personnel who are supported by an appropriate and up-to-date training management system
  • BI-02P.01 All safety and operational systems on mobile equipment are maintained
  • BI-02P.07 Prestart radio checks
  • BI-02P.30 Regular and timely maintenance of communications systems equipment
  • BI-02S.06 New communications/technology equipment, specification, test and commissioning process
  • BI-05S.05 Appropriate system for scheduled inspections include structured checklists and defect reporting


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