Candidates must possess a Bachelors Degree in Mechanical Engineering of a recognized University or its equivalent and  Boiler Operation Engineer proficiency Certificate where class is  not mentioned or First Class Boiler operation Engineer  Proficiency Certificate where class is mentioned, issued by the  Board of Examiners under the Andhra Pradesh Boiler Operation  Engineer Rules or by the authority of other states, competent to  issue such certificate (as prescribed under Rule-5 of A.P. Boiler  Service Rules issued vide G.O.Ms.No. 128, dt. 23/6/1988 of  Labour Employment and Technical Education (Lab-iv)  Department and as amended in G.O.Ms.No. 135, dt. 4/12/2002  of Energy (CCB) Department.