Section 42(b) in Bihar Boilers Attendants' Rules, 1948
(b)he is able-(i)to stoke a boiler including cleaning and banking fires, in a workman like manner;(ii)to show how avoidable smoke may be prevented;(iii)to blow through and test the correctness or water-gauge glasses and test cooks;(iv)to replace a gauge glass and show how a false water-level might be shown;(v)to ease a safety valve and use a blow down cock or valve;(vi)to adjust a high steam and low water safety valve and renew a fusible plug;(vii)to joint a manhole or handhole door or any cover or flange in the steam or feed pipes;(viii)to pack pump or valve chest glands;(ix)to grind and adjust cocks and valves;(x)to take a donkey pump or injector to pieces and replace in working order.
