Central Industrial Security Force recruits personnel in Constable Fire Cadre. The eligibility criteria are given below… 1. Nationality: Candidates must be a Indian citizen. 2. Age Limit: Candidates’ age must be between 18 – 23 years. Age relaxations will be extended for following cases 3. Age Relaxation: Category Relaxation (in years) SC/ST 5 OBC 3 Domiciled in Jmore..