Grimm Aerosol Spectrometers applied in aerosol research for the benefit of COVID-19 measures

Recently the interest has increased in the origin and behavior of aerosols in indoor facilities. More specific, the effects of ventilation in combination with air purification systems on the aerosol distribution and concentrations. Knowledge of the behavior of aerosols, and the effects of air filtration and/or air purification systems in the field, can result in insights into organising indoor activities in a safe way with the minimum loss of energy.

De verspreiding van virussen welke zich hechten aan aerosolen is momenteel een veelbesproken onderwerp. Met name de deeltjes- en fijnstofconcentratie, de mate van ventilatie en de personele bezetting worden maatschappelijk kritisch bekeken. De maatschappelijke onrust en interesse heeft tot gevolg dat er veel onderzoeken worden gestart om de mogelijke bronnen van aerosolen en maatregelen tegen de verspreiding hiervan te bepalen.

Consistent implementation of the IMO 2020 regulation which limits sulphur in ships fuel oil was enhanced from 1 March 2020, with the entry into force of a rule to ban the carriage of non-compliant fuel oil. The IMO 2020 regulation limits sulphur in ships’ fuel oil to a maximum 0.50%. The regulation has been in force globally since 1 January 2020, under IMO’s MARPOL treaty. It brings benefits for the environment and human health from a reduction in sulphur oxides in the air. The complementary MARPOL amendment prohibits the carriage of non-compliant fuel oil for combustion purposes for propulsion or operation on board a ship - unless the ship has an approved exhaust gas cleaning system (“scrubber”) fitted. The amendment is an additional measure to support consistent implementation and compliance and provide a means for effective enforcement, particularly by port State control.
Source: IMO News

Ravebo, based in the Port of Rotterdam is the service/sales representative for the boiler/IGG manufacturer Kangrim. Due to the fact that all IGG’s are equipped with at least one oxygen analyzer, we see many brands fitted on them e.g. Green Instruments, Servomex etc. which all have to be serviced at certain intervals or when the unit fails. Due to the EEC regulations it’s hard and difficult to obtain spares for these units. We as Ravebo, have taken the decision to start with the brand OXUS. This OXUS O2 analyzer is a premium oxygen analyzer manufactured in South Korea. This analyzer fulfills all the shipping regulations and can be installed in an easy way into the existing system. This analyzer is equipped with a Zirconia sensor that also benefits with a long life span. The calibration of the unit can be done by the crew and have to be checked either weekly, monthly or 3 monthly depending on the application. At this moment Ravebo has the complete units and the spares of this O2 analyzer OXUS model OA-Z-IG in stock. This stock - in combination with our specialized engineers - results in on time repairs.

Ravebo has designed and built a vent gas scrubber for an international chemical company for removing hydrocarbons from a gas flow. The scrubber is integrated into the production line for discharging ships and shift on to trucks and train cars which leads to the dodging of gas. If there is harmful, toxic or (strong) odor-carrying gasses or vapors, they should certainly not be freely emitted. The responsible for the installation shall ensure that the outgoing gasses or vapors are removed from the harmful components.

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