Section 6(1)(i) in Rajasthan Petroleum State and Subordinate Service Rules, 2012
(i)a person appointed on ad-hoc/officiating/urgent temporary basis shall not be entitled to screening for a post higher than that to which he was initially appointed, if a person senior to him on a lower post who fulfilled the qualifications prescribed for the post was either not given such ad-hoc appointment or is not entitled to screening under these rules. Seniority for this purpose shall be determined according to the length of continuous service on the post.