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TITLE(s): CORROSION-CONTROL FITTER (pipe lines; utilities) Installs and inspects rectifier stations and anodes used to minimize corrosive effects of static-electricity discharge between gas pipeline and ground: Measures electric current present in ground, using voltmeter, ammeter, and resistivity meter. Compares electrical quantities with written standard to identify ground areas in which electric current exceeds permissible maximum. Buries rectifier or anode near pipe. Welds connector to pipe, using thermite welding device, and connects wire between connector and anode to complete circuit. Installs insulating flanges at pipe joints to isolate sections of pipe protected by rectifier stations. Periodically tests rectifiers to verify efficiency and replaces defective units. GOE: 05.05.05 STRENGTH: M GED: R4 M3 L3 SVP: 7 DLU: 77 ONET CROSSWALK: 87899A Construction Installation Workers | |||||||||||||||||||||||||||||||||||
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