Section 65(5) in Maharashtra Factories Rules, 1963
(5)(a)(i)As far as possible, in respect of every sizing cylinder the shell whereof is made of copper sheet or any other non- ferrous metal and which is put to use before the 31st October, 1963 the Manager shall make available to the Inspector and the competent person examining such cylinder, information about the date on which such cylinder was put to use for the first time with full particulars as to the thickness of the shell when so taken into use in the factory for the first time. Information shall also be made available about the working pressure recommended by the makers when the cylinder was put to use for the first time in the factory.(ii)If no such information is available, any other evidence relevant to show the age of the cylinder shall be submitted by the Manager to the Chief Inspector. The Chief Inspector shall determine the age of the cylinder on such documentary evidence or other oral evidence that may be presented to him by the Manager or any other evidence that may be produced, and the age so determined shall be considered as the age of cylinder for the purpose of this rule.(b)(i)The minimum thickness of the shell of a sizing cylinder shall be actually measured once in a period of two years.(ii)If during its working life, the shell of a sizing cylinder is at any time punctured requiring repairs to the cylinder to close the punctured portion, the thickness of the sheet of the shell near such puncture or opening shall be measured by a competent person.(c)(i)No sizing cylinder shall be subjected to work at a pressure greater than the maximum safe working pressure recommended by the makers of such cylinder at the time when such cylinder was first put to use in a factory.(ii)No sizing cylinder which has been in use for more than five years shall be subjected to work at a pressure greater than the lowest of the most safe working pressure calculated in accordance with the following three methods, namely:-(a)Same proportion to the original safe working pressure when first put to use as the minimum thickness of the shell materials as actually measured at any time bears to the original thickness of the shell material when first put to use;(b)Calculated on the basis of the minimum thickness actually measured so that the tensile stress in the shell shall not exceed safe working stress for the material of the shell;Explanation. - If the shell is made of copper, safe working tensile stress shall be taken to be not more than 350 kilograms per square centimetre.(c)Reduced at the rate of 4 per cent of the original working pressure for every year of its use after the first five years;(d)No sizing cylinder shall be continued to be used for more than twenty-five years after it was first put to use:Provided that the Chief Inspector may authorise the use of sizing cylinders beyond the period of twenty-five years for a period not exceeding five years, if tests are carried out and further details are made available to his satisfaction to indicate that the cylinder can be used with safety.
