Before the injection of tracer takes place, the complete injection equipment will have been pressure tested and checked for proper functioning. The tracer solution will be delivered in a closed Monel bottle that will be connected directly to the injection equipment before the valves on the bottle are opened. Thus, the radioactive material will not be exposed to the environment or to the personnel.

Tracer injection will be carried out either by connecting the injection equipment as a bypass to the main injection tubing or by pumping water from a 200 L container through the injection module and into the injection line using a high pressure pump. The pumps are pneumatically and not electrically driven in order to reduce the risk of sparks igniting any gas leakage from the nearby petroleum operations. The injection of the water tracer is expected to last 1.5 h. The main injection (99.9% of the tracer) takes place in a few minutes and the remaining time is used to clean out traces of radioactivity from the injection system.

Decontamination of the equipment and the site (if needed in case of accidents) will be carried out by personnel from the tracer company. In order to check water samples for radioactivity, a portable liquid scintillation counter will be available at the well head site.