Section 12 in The Chennai Corporation Officers Service Rules, 1975
12. Account Test - Exemption for promotion. - Where a pass in Part I of the Account Test for Subordinate Officers is newly prescribed by the Special Rules of a service for any category, grade or post therein or in any class thereof, a member of the service who has not passed the said test, but is otherwise qualified and suitable for promotion to such category, grade or post may be promoted thereto temporarily. If a member so promoted does not pass the said test at one of the first two examinations held after such promotion, he shall be reverted to the category, grade or post from which he was promoted and shall not again be eligible for promotion under this rule,
A member who is so reverted shall not, by reason only of "his promotion under this rule, be regarded as entitled to any preferential claim to further promotion to the category, grade or post, as the case may be, to which he had been promoted under this rule.Explanation. - This concession will be allowed only for a period of two years after the test has been newly prescribed.
