Understanding Infrared Thermography Reading 7 Part 2 of 2.pdf

EPRI Licensed Material
Basic Elements of an In-House Program
C. Vendor Recommended: Vendor-recommended equipment whose manufacturer or
vendor recommends the periodic monitoring of the equipment with infrared
thermography.
D. Non-Vital: Non-Vital equipment shall be defined as:
• Equipment whose replacement cost versus periodic monitoring cost does not differ
greatly and does not fall into category A or B above.
• Components that are used very infrequently and do not fall into category A or B.
12.1.2 The IR administrator shall maintain a listing of all of the components in the
thermographic analysis program, the category to which they belong, and their monitoring
interval.
12.1.3 Equipment in category D that has a failure history relating to thermography might be
included in the program in order to determine root cause, or to prevent failure recurrences
or significant inconveniences. Otherwise, equipment in category D should be omitted
from the program.
12.1.4 The above recommended component selection criteria should be applied predominantly
to electrical equipment such as:
• Motor control centers
• Load centers
• Transformers
• Switchgear
• Battery chargers
• Switchyard equipment
• Large motor termination
12.1.5 The above criteria can also be applied to:
• Pumps/motors
• Steam traps
• Valves
12.2 Performance Intervals
12.2.1 The selection of performance intervals should be based upon several factors, such as:
• The impact of the component on plant operation and personnel safety if an
unexpected failure were to occur.
• The speed at which a component fault manifests itself into a stage of degradation,
which affects the component’s operability.
• Vendor/manufacturers’ recommendations.
• The category of the component as stated in section 12.1.1 of the program.
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