Full formGovernment & Exams
POHstands forPeriodic Overhauling
Full Form of POH
What is POH?
Periodic Overhauling (POH) is a scheduled maintenance procedure performed by Indian Railways to ensure the safe and efficient operation of locomotives, coaches, and other rolling stock. It involves a comprehensive inspection, repair, and replacement of worn-out components, restoring the equipment to near-original condition. POH is carried out at designated railway workshops or sheds after a fixed period or mileage, typically every 18 to 24 months or after 180,000 kilometers for locomotives. This process is critical for preventing unexpected breakdowns, extending asset life, and maintaining service reliability across India's vast rail network. The schedule is governed by strict technical guidelines issued by the Railway Board. Knowledge of POH is often tested in RRB (Railway Recruitment Board) examinations for technical posts, as it reflects core maintenance practices. The term is also used in other transport sectors, but its most common and formal application is within Indian Railways.
POH का फुल फॉर्म
आवधिक ओवरहालिंग
Example
The diesel locomotive has covered the specified mileage and is now due for POH at the Jhansi workshop.
POH — frequently asked questions
What is the full form of POH?
The full form of POH is Periodic Overhauling, a scheduled maintenance procedure used by Indian Railways.
How often is POH done in Indian Railways?
POH is typically performed every 18 to 24 months or after a specified mileage, such as 180,000 km for locomotives.
What is the difference between POH and IOH?
POH (Periodic Overhauling) is a major overhaul with extensive repairs, while IOH (Intermediate Overhauling) is a lighter maintenance cycle done between POH schedules.