Visual Inspection of Penstocks and Water Tunnels for Hydropower Plants in Malaysia

  • O. EdzhamEmail author
  • L. Jansen
Conference paper
Part of the Water Resources Development and Management book series (WRDM)


A penstock is important component in hydropower plant system. The penstock is used to feed or carry away water from the reservoir to the hydro turbine for power generation. High pressure penstocks for hydroelectric power stations are made from steel and reinforced concrete. During operation, the penstocks will be filled with water and over time, the condition of the penstock is unknown and ascertained. Therefore, inspection of the penstock and water passage should be carried out for signs of deterioration such as cracking, erosion or cavitation. The coating of the penstock should also be inspected for signs of damage to the protective treatment and corrosion of the metal.

This paper aims to discuss some defects observed during the inspection and the possible remedial measures.


Visual Inspection Penstock Hydropower 


  1. 1.
    Federal Highway Administration: Tunnel Operations. Maintenance, Inspection and Evaluation (TOMIE) Manual (2010)Google Scholar
  2. 2.
    Jabatan Keselamatan dan Kesihatan Pekerjaan Malaysia: Guidelines for Approval of Design Scaffolding 2016. Putrajaya, Malaysia (2016)Google Scholar
  3. 3.
    Poyry Energy Sdn Bhd: Dam Safety Assessment Report Main Report Sg Perak Hydroelectric Schemes. Kuala Lumpur, Apr 2015Google Scholar
  4. 4.
    Shawanigan Engineering Company Limited: Bersia Operation & Maintenance Manual Civil Works, Apr 1988Google Scholar
  5. 5.
    Shawanigan Engineering Company Limited: Bersia Completion Report Penstocks, Jan 1986Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Engineering Services, Centre of Expertise (Projects), Energy Ventures DivisionTenaga Nasional Berhad (TNB)Petaling JayaMalaysia

Personalised recommendations