Specialist Hazard Control Solutions Kept Workers Safe From Paint Fumes During Navy Ship Repairs

Case Study Overview

This particular project required RVT's specialist hazard control solutions whilst work took place on one of the most versatile warships, a type 23 frigate. This warship plays a key role in protecting our nation’s interests, from policing vital trade routes to supporting humanitarian aid missions.

The overall goal was to restore the ship so that it can operate well beyond its original design life expectancy.

Challenge

Two thirds of the outer hull had been painted, when an improvement notice was issued base-wide for the activity of spraying. It stated that improved controls would be needed for the extraction and filtration of the paint fumes, due to the possible ill-effects to those carrying out the activities and those working nearby. The previous system used was identified as inadequate. At short notice, RVT was called upon by the client's chosen hire partner, Speedy Customer Solutions, to survey the space and to work with the Support Service Controller to understand the specific hazard, the environment and the work process. RVT then recommended a bespoke hazard control solution.

Solution

The RVT Group recommended a hybrid solution of high volume extraction and filtration using activated carbon cartridges. The Aft end of the ship was provided with extraction to atmosphere (outside of the complex an exclusion zone was created). All extraction equipment was ATEX rated.

RVT provided a total air movement of 26,866m3 p/hour, achieving 3.6 air changes in the entire space per hour. The dock bottom was effectively under a ‘negative pressure’ meaning that there was no way for fumes to escape the working area and migrate to other areas. RVT visited the project after the first coat of paint was applied, to ask for feedback. The Support Service Controller was extremely pleased with the result, it over-performed in their eyes, and when the system was tested by their Occupational Hygiene team during the works, they recorded a PPM measurement of 6PPM (Parts per million). The previous system used provided a best recording of 150PPM.

The solution that RVT installed satisfied the health and safety requirements on the base and allowed the activity to go ahead within the customer’s deadline.

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