Ballast tank monitoring functions are calibrated and tested onboard.

The Riken Keiki RKI RKK is a high quality fixed atmosphere monitor specially designed for pump rooms and water ballast tanks onboard seagoing vessels. Built by Riken Keiki (RKI) a global leader in gas detection and sensor technologies with over 80 years of innovation the RKK delivers reliable, continuous monitoring of hazardous atmospheres in enclosed marine spaces.

In marine operations, ensuring the safety of crew entering confined spaces like pump rooms and ballast tanks is essential. The RKK system is engineered to detect unsafe levels of oxygen deficiency, toxic gases or flammable atmospheres, providing real‑time measurement and clear alarm signals to help protect personnel and vessel integrity.

Key industry standards, including SOLAS Regulation XI‑1/7, require ships to carry appropriate atmosphere testing instruments capable of reliably measuring oxygen and gas concentrations before crew enter enclosed spaces. These instruments must be maintained and calibrated in accordance with the manufacturer’s instructions to ensure accuracy and compliance.

For vessels calling in Spain, Gibraltar, Bulgaria, Turkey, Romania, Netherlands, France, Germany and Italy, we offer on board calibration, repair and commissioning services to ensure your RKK monitor always performs accurately and meets regulatory obligations. These services are available at major ports including Algeciras, Valencia, Barcelona, Marseille, Antwerp, Rotterdam, Hamburg, Genoa, Piraeus, Varna and many more.

Keeping your gas monitoring systems calibrated, certified and service‑ready helps meet SOLAS and ISM Code safety requirements and more importantly, keeps your crew safe during critical confined space operations.