ISO 19097-1:2018 pdf free

ISO 19097-1:2018 pdf free.Accelerated life test method of mixed metal oxide anodes for cathodic protection
The test cell shall be a tall-form glass 1,01 beaker fitted with a rubber stopper at the top to hold the electrodes and reduce air contact. Glass beakers of other sizes may be used as long as electrodes remain immersed for the duration of the test. The gap between the anode and cathode shall be approximately 50 mm. The rubber stopper shall have a hole located midway between the electrodes that is fitted with an extension tube to vent gases away from the electrical connections. This hole may be used to locate the current reverse supplemental anode and Luggin probe. There shall be an additional hole large enough to measure pH of the test solution. A typical setup for a test cell taking a reference electrode with Luggin probe for anode potential measurement is shown in Annex A.
A sample of the anode having 2 000 mm2 of anode surface area shall be used. The anode surface area shall be calculated by including all the active surfaces that will be in contact with concrete when embedded. The anode sample shall be welded to a 1,6 mm diameter x 203 mm long Ti rod in two spots as shown in Figure A.1. The Ti rod acts as the current carrier. For other types of anodes, an appropriate anode connection shall be made in accordance with the anode manufacturer’s recommendations. The anode shall be connected to the positive lead (the negative lead during the current reversal test) of the power supply external to the cell using an insulated 1 mm diameter copper wire with a copper spring-loaded clip with jaws.
The cathode shall be a 12,7 mm diameter x 200 mm long Ti rod. Other shape of cathode like Ti plate with enough surface area may also be applicable. Alternatively, relatively inert cathodes such as platinum or niobium or zirconium may also be used. The cathode shall be fitted through the rubber stopper and extended to approximately 10 mm from the bottom of the cell. The cathode shall be connected to the negative lead of the power supply (not connected during the current reversal test) external to the cell using an insulated 1 mm diameter copper wire with a copper spring-loaded clip with jaws.ISO 19097-1 pdf download.