Essential Elements - hdbk109220040044

DOE-HDBK-1092-2004

18. Routine Maintenance for Uninterruptible Power Supply (UPS) Systems

3.5

ESSENTIAL ELEMENTS

The EPM program should include the essential elements described in NFPA 70B, Chapter 5,

What is an Effective EPM Program?. This includes planning, identifying the main parts, and

utilizing available support services for a program. For example:

1. Assigning qualified personnel

2. Surveying and analyzing equipment maintenance requirements

3. Performing routine inspections and tests

4. Analyzing inspection and test reports

5. Prescribing corrective measures

6. Performing necessary work

7. Preparing appropriate records.

3.6

PLANNING AND DEVELOPING AN EPM PROGRAM, AND

FUNDAMENTALS OF EPM

The EPM program should be planned and developed to include each of the functions,

requirements, and economic considerations described in NFPA 70B, Chapter 6, Planning and

Developing an EPM Program, and NFPA 70B, Chapter 7, Fundamentals of EPM. Chapter 6

includes surveying the existing electrical system installation, identifying crucial equipment,

establishing a systematic program to follow, and developing methods and procedures to plan,

analyze, perform, verify, and record.

Electrical drawings should be kept current. A system of recording changes in electrical systems

and then integrating those changes into the applicable drawings should be developed and

implemented.

NFPA 70B includes designing to accommodate maintenance, scheduling maintenance,

personnel and equipment safety, circuit protection, and initial acceptance testing.

3.7

GROUND-FAULT PROTECTION

The EPM program should include the essential ingredients of Chapter 14 of NFPA 70B, Ground

Fault Protection. This includes GFCls and ground-fault protection for equipment (GFPE).

Ground-fault protective devices are intended to protect personnel and equipment. There are two

distinct types -- GFCI and GFPE -- and it is extremely important to understand the difference

between them.

A GFCI is defined in Article 100 of the NEC as a device intended for the protection of personnel

in their job assignments. (See NEC 210.8, 215.9, 427, 527)

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