Section 27 in The Punjab Chemical Works Rules, 1933
27.
The charging and discharging pipes of spirit store vats, and all vessels used for the store of spirit, all mandoors of such vats or vessels, and the doors of spirit store, laboratory and the warehouse shall be so fitted as to enable them to be closed with two locks, the keys for which are not interchangeable, and of which one lock shall be a revenue lock (ticketted) in charge of the officer-in-charge and the other a lock in charge of the approved manufacturer. The keys of all the revenue locks shall be kept by the officer-in-charge in whose absence no door or vessel in the Chemical Works may be unlocked or remain unlocked.
