Welcome to the UKWA Home Page Forums Technical buoyancy tests and smoke pellets Re: Re: buoyancy tests and smoke pellets

Sea Lancer

I have used plumbers pellets to find leaks when boats fail buoyancy tests. Before resorting to pellets I would try to find the leaks using soapy water as the pellets can be a bit messy. I f you do use the pellets then you need a little peparation. A suitable base or container for the lit pellet needs to be placed into the tank. These pellets obviously burn and you dont want to set the boat alight! The hatch cover needs to be at hand and a means of putting some air pressure into the tank must be connected. (Usually the buoyancy testing kit) Light the smoke pellet and put it into your container in the tank. Put on the hatch cover securely and the smoke will escape through the offending areas. Some additional pressure may be needed to force out the smoke, hence the testing kit. When you take off the hatch cover there can be a fair amount of smoke left to escape so only do this outside. When the pellet stops smoking(usually about 2 minutes) it will become a crumbly ash tablet which will break up and spread over the inside of your boat if you dont have it in or on a suitable base. They do smell a little and this can leave a faint odour in the tank which needs to be left open to ventilate. A very good article is available on http://www.parkstonewayfarers.org.uk/BuoyancyTestingDry.html