Inspection - hdbk109220040043

DOE-HDBK-1092-2004

frequency should be as recommended by the manufacturer or as otherwise indicated in NFPA

70B. An initial period of inspection (sometimes several years) provides sufficient knowledge

that, when accumulated, may permit increasing or decreasing that interval based upon

documented observations and experience.

One guidance on how to determine inspection frequency is described in various sections of

NFPA 70B, Tables H.1, H.2, and I.1 including, but not limited to, the following sections:

1. Inspection Frequency for Planning and Developing an Electrical Preventive Maintenance

Program

2. Recommended Frequency for Substations

3. Frequency of Maintenance for Switchgear Assemblies

4. Regular Inspections and Special Inspections and Repairs for Liquid-Filled Transformers

5. Regular Inspections and Special Inspections and Repairs for Dry-Type Transformers

6. Visual Inspection Intervals for Power Cables

7. Frequency of Inspections for Enclosures of Motor Control Centers

8. Recommended Frequency for Ground-Fault Circuit Interrupters

9. General and Inspection and Cleaning for High-Voltage Fuses

10. Frequency for Rotating Equipment

11. Cleaning Interval for Lighting Equipment

12. Visual Inspection Before and After Each Use, Periodic Inspection of Crucial Wear Points,

Excessive Dirt Accumulation, Insufficient or Improper Lubrication, and Visually Inspected

Before Each Use for Portable Electric Tools and Equipment

13. Special Maintenance Tests, Frequency of Tests, Inspection Frequency and Procedures,

and Insulating-Liquid Analysis for Testing and Test Methods

14. Reinspection and Retesting Within One or Two Years After Energization for General

Aspects of Maintaining Medium- and Low-Voltage Distribution Systems, Frequency,

Regreasing, and Frequency for Lubrication of Rotating Equipment

15. Inspections Should Be Made of All New Installations and Whenever Alterations Are

Made and; Recordkeeping for Electrostatics Static Grounding (see NFPA 77)

16. Inspection and Testing of Power Supplies, Functional Systems Testing of Interlock and

Logic Systems, Visual Inspection of Level Devices, Frequency of Testing Safety and

Shutdown Systems, Frequency of Testing Alarm Systems, and Visual Checking of

Wiring Systems for Process Instrumentation and Control

17. Frequency for Cable Tray System

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