Section 203(7) in Bihar Board's Miscellaneous Rules, 1958
(7)Custody of duplicate keys and their annual inspection. - All spare padlocks with their keys and all duplicate keys of padlocks belonging to the headquarters and sub-treasuries and treasure chests or other departments with the exception of those belonging to the locks of the headquarters's strong-room door shall be kept in the headquarters strong-room under double locks, the key of one lock being in the hands of the Treasury Officer and of the other in the hands of the treasurer. The duplicate keys of the strong-room door shall be secured under the seat of the Treasury Officer and Treasurer and deposited in the district treasury strong-room at Purulia, the duplicate keys of which shall be kept under double lock in the district treasury at Gaya. They shall be sent for once a year in the month of April, examined by actual insertion in the locks and returned to the places fixed under fresh seal of the Treasury Officer and Treasurer, a note being made in Register 48 that they have been examined and found correct. The duplicate keys kept in the strong-room of the several district treasuries shall be similarly tested.Note 1. - In districts where the treasury is worked by a branch of the [State Bank of India] [Substituted for 'Imperial Bank of India'.] and consequently where there is no Treasurer, the Nazir or such other officer, as the District Officer directs will discharge the functions of the Treasurer for the purpose of the above rule.Note 2. - The duplicate keys of each set of locks in use in the strong-room and in other rooms and receptacles, if any, shall be kept in a separate sealed packet, each packet containing the duplicates of all the keys in the custody of one officer and bearing the seal not only of that officer but also of the officer who is in-charge of the keys of the other set of locks. The sealed packets shall be deposited in two separate receptacles in the places mentioned in this rule. At the time of verification care should be taken not to send for the duplicate keys of both sets of locks at the same time. One packet containing the duplicates of keys in charge of one officer shall be sent for and returned after verification before the other packet containing the duplicates of the keys in charge of the other officer is sent for. The essential point to be borne in mind is that the keys of both sets of locks may not fall simultaneously into the hands of one and the same person.
