Civil Service Personnel Rules Rule 264

264. Under the following circumstances, the temporary extraordinary pension may be converted into permanent injury pension:
(a) the service personnel in receipt of the temporary extraordinary pension for injury has had applied for invalid pension on account of that injury;
(b) the temporary extraordinary pension has already been extended up to not less than five years;
(c) the medical board certifies that the disability of the service personnel does not seem to lessen significantly.