Short answer, yes (up to a point)

You're right, but consider the risks if someone was continuously removing the hoses etc every day and replacing them next day - wear and tear on fastenings and potential leaks make it impractical unless you have a very understanding and well funded income stream

Just a though,

Jim

Refer to page 22 of 43 in the HSE Guidance, "The safe use of compressed gases in Welding, flame cutting and allied processes", under the heading, "Cylinders in use"

http://www.hse.gov.uk/pubns/priced/hsg139.pdf

Para 63
Cylinders connected for use
Cylinders ready for use and connected to equipment may be kept inside a workroom. A spare cylinder of fuel gas and oxygen may also be kept there. Both the connected and the spare cylinders should be securely mounted in wheeled trolleys or safely fixed against a wall or otherwise prevented from falling over. They should be in a well ventilated area within the workroom and well away from any combustible materials.

http://www.bcga.co.uk/pa...nical_information_sheets

There is also a 'model risk assessment' from the BCGA TIS 15.