• Muhammad Ellang Naufal Politeknik Perkapalan Negeri Surabaya
  • Pekik Mahardhika Politeknik Perkapalan Negeri Surabaya
  • Adi Wirawan Husodo Politeknik Perkapalan Negeri Surabaya
Keywords: Corrosion, fire hydrant, inspection, inspection planning, wall thickness


Abstract - PPNS completes building facilities with a fire hydrant. In order to ensure that a fire hydrant can be used in an emergency, periodic checks must be carried out. A constraint that is considered to be frequently encountered in fire hydrant piping systems is leakage due to internal and external corrosion. Before calculating the corrosion, measuring the actual thickness of the pipe and visual checking on the PPNS hydrant pipe need to be done first. With an average of 5.63 mm on a 4” pipe where the minimum wall thickness is 0.7 mm, and an average of 6.51 mm on a 6” pipe with a minimum wall thickness of 0.8 mm, it can be concluded that the PPNS hydrant pipe is considered still feasible and appropriate. Furthermore, the calculation is carried out, and the results of the corrosion rate on the 4” pipe is 0.04 mm/year and the 6” pipe is 0.07 mm/year, with the remaining life value on the 4” pipe is 114 years and the 6” pipe is 85.9 years. Then, with a specified period of 10 years, the next inspection date of the PPNS hydrant pipe can be done in May 2032