This standard outlines the specifications and testing methods for wooden casks and barrels ranging from 10 to 300 litres capacity. It details dimensions, materials, construction guidelines, marking requirements, and performance evaluations essential for manufacturers, suppliers, and users to ensure quality and durability in liquid and semi-solid storage containers.
Overview
This standard outlines the specifications and testing methods for wooden casks and barrels ranging from 10 to 300 litres capacity. It details dimensions, materials, construction guidelines, marking requirements, and performance evaluations essential for manufacturers, suppliers, and users to ensure quality and durability in liquid and semi-solid storage containers.
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Frequently Asked
The standard defines wooden casks and barrels with capacities between 10 and 300 litres, featuring specific dimensions for each size category. Small casks typically range from 10 to 50 litres, medium from 50 to 150 litres, and large barrels from 150 to 300 litres. Dimensions such as external height and diameter vary accordingly, ensuring uniformity. These containers are made from seasoned hardwood or softwood staves bound by metal hoops, designed to be leak-proof for storing liquids like oil or water. Detailed measurements and construction parameters are provided within the full standard.
Recommended wood species depend on whether the cask is intended for wet or dry contents. For wet cooperage, species such as Indian oak (Quercus spp.), dhaman (Grewia tillifolia), sandan (Ougeinia oojeinensis), aini (Artocarpus hirsutus), white cedar (Dysexylum malabarieum), mango (Mangifera indica), gamari (Gmelina arborea), sal (Shorea robusta), bonteak (Lagerstroemia lanceolata), and teak (Tectona grandis) are preferred. Dry cooperage may include these along with species like salai (Boswellia serrata), kuthan (Hymenodictyon excelsum), spruce (Picea smithiana), jhingan (Lannea coromandelica), kindal (Terminalia paniculata), machilus, and kala siris (Albizia odoratissima). Alternative species may be used upon agreement between buyer and seller.
A primary quality test mandated is the leakage test, which involves filling the barrel with water at ambient temperature, maintaining it for one hour, then rolling it on its sides and inspecting all joints and ends for seepage. The barrel must show no visible leakage to be accepted, though minor initial seepage in new barrels is tolerable. Other performance tests include inclined impact tests, where barrels are rolled down an inclined plane to check structural resilience, as well as horizontal impact and pendulum tests. These evaluations ensure the barrels' suitability for containing liquids and semi-solids without failure.
Hoops securing the staves together must be made from mild steel or wood, with the number and dimensions specified according to barrel capacity. Steel hoops are fastened using aluminium rivets. The assembly requires smoothing the edges of staves and fixing lids into grooves before positioning the hoops under adequate pressure to maintain the barrel's shape and strength. This attachment method ensures tight binding of the staves, reinforcing the barrel's structural integrity and durability.
Each wooden cask or barrel must bear clear and permanent markings that include the manufacturer's name, initials, or registered trademark; the month and year of production; and the container's capacity in litres. These markings facilitate traceability and quality assurance throughout the product's lifecycle. Additionally, the optional ISI certification mark may be applied to indicate conformity with quality standards.
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