Combustion Inspection — Inspection ProceduresInspection and Maintenance — GEK 107048
CI-I-27
Table CI-6
Inspection Limits, Spark Plug
CAUTION
The inspection criteria in this Table CI-6 applies to
General Electric Company supplied transition pieces only.
**WARNING**
If this gas turbine installation is in a hazardous area as
defined by National Protection Association
(NFPA)–70, and the site requires a Class I, Division 1
or 2, Group D certified ignition system, any parts
which are replaced as part of maintenance or servicing
procedures must be identical to those as originally
installed, per General Electric Company in order for
the system certification to continue to be in effect.
Inspect
Maximum Acceptable
Limits
Disposition (For Parts
Beyond Max. Limits)
Spark Plug
1. Wear at tip 0.030 Replace
2. Bad threads on electrical
connection
None Replace
3. Test firing No internal arcing allowed Replace insulator
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