Jan 2018
Gas Distribution
Bolt Integrity
Jan 2018
Jun 2019
Phil Bradwell, Innovation Project Manager
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Network Innovation Allowance
GD - Reliability and maintenance
Maintenance & Inspection
SGN NIA project to inspect bolt condition and trial reinforcement clamp.
The objectives of this project are to:
  • Complete offsite trials and onsite live trails of the reinforcement clamp.
  • Complete a variety of offsite testing to calculate the corroded cross sectional area and the remaining strength of the stud bolts.
  • To give a quantitative measure for the corrosion as a percentage of metal loss or cross sectional area.
  • Development of a screening tool documenting evidence from offsite testing. This will be developed into a user guide based on bolt conditions, operating parameters and all other relevant details.Understand how the corrosion affects the remnant strength and life in the bolt.
  • Develop a bolt replacement procedure and training instructions.