London (CNN Business) The London Metal Exchange has banned dealers from trading while under the influence of alcohol, in an attempt to overhaul the workplace culture at the metals center.

Workers will be prohibited from drinking alcohol before doing business on the exchange's "Ring" — Europe's last remaining "open outcry" trading floor — ensuring sobriety as they set global metal prices.

The exchange says the move will help to "ensure fit and proper" behavior by its employees.

It comes after the group published a code of conduct in April, which sought to clamp down on harassment and behavior that was "threatening, humiliating or disruptive."

A spokesperson for the exchange said Friday that it has "broad powers" to ensure proper behavior on the Ring, and that its members have policies in place to police their employees.

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