Measurement of salt surface density on polluted insulators using a simple x-ray fluorescence technique
✍ Scribed by Shigemasa Enomoto; Kuniaki Nishioka; Yoshio Higashiyama; Atsushi Sasaki
- Publisher
- Elsevier Science
- Year
- 1992
- Weight
- 491 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0883-2889
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✦ Synopsis
A sample x-ray fluoresence techmque usmg a low power x-ray tube and a neon gas-filled proportronal counter followmg a multtchannel analyzer has been developed for the nondestructtve and rapid measurement of the density of salt deposited on the surface of power msulators To detect famt Cl K x-rays accurately mterfermg x-rays such as K x-rays from argon m the au and from compostte elements of the msulator glazing material are ehminated by usmg an x-ray filter of 30 pm thick polyvmyhdene chloride placed m front of the counter window. The techmque was applied for crevrs type suspension insulators of 250 mm dta, having surfaces which were arttfictally depostted with NaCl of 0.01 to 0 1 mg/cm' surface density. The relattve statrstrcal error for a surface salt density of 0 1 mg/cm* was 1 1% using a 100s measurement ttme The postttonal dlstrtbutlon of deposited salt and the time variation of salt accumulation on the msulator surfaces were also observed wtth the techmque