1.1 This practice covers a standard procedure for detecting flaws in the conductive coating (heater element) by the observation of polarized light patterns.
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- 12/01/2014
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NFPA-FIRE NFPA-FLUID EEMUA UL CTA AWS
NFPA-FIRE NFPA-FLUID EEMUA UL CTA AWS
1.1 This practice covers a standard procedure for detecting flaws in the conductive coating (heater element) by the observation of polarized light patterns.
