4. Explore various corrosion detection methods at the critical zone of planted and flange mounted lighting poles


UPDATE: Tech briefing pdf is now available for download in ATTACHMENT

UPDATE 2: Refer to Additional Info below for the Proposal Submission Instructions

  • Currently, corrosion inspection for rusty base, arm or body on planted and flanged mounted lighting post is base on Relative Loss of Section (RLS). The technique uses pulse induction to induce electromagnetic field in the target areas. The magnetic field penetrates through the wall of the reference zone or entire critical zone above and below ground. Readings are ratio-metric comparison of corrosion in critical zone against a corrosion-free reference zone.
  • RLS technique is the only non-destructive corrosion detection technology widely used in Singapore and LTA prefers not to be limited to a single inspection technology. 
  • Proposed product would be used by street lighting maintenance contractors.


  • Solution must not be based on RLS Technique
  • Durable for outdoor use
  • Portable size and comes with its own power source
  • Current RLS testing costs about $30 per lamp pole


Desired Outcome

Q2 2020 – Developed Prototype

Readings from the prototype must be comparable, if not better, when cross-checked against the results using current means (Relative Loss of Section technique).

Q4 2020 – Pilot Deployment

Solution must produce the same recommendation as per current method for a given sample of lamp posts

Development Timeframe

Q2 2020 – Prototype

Q4 2020 – Pilot Deployment

Q2 2021 – Full Implementation

Additional Info

Market Potential for proposed solution/product

There is approximately 110,000 lamp poles in Singapore island-wide. Solutions could be extended to other local agencies such as HDB and JTC, as well as to the global street lighting industry.

Proposal Submission Instructions

  1. Please download Application Form_0.docx found in the ATTACHMENT and fill it as detailed as possible.
  2. Click on “APPLY” button in this challenge page and fill in the required fields. Do upload your completed application form and any supporting documents prior to submission.
  3. If you are ready to submit your application, select “Submit for Review” in Change Proposal Workflow state field and click the Publish button.
  4. If you wish to save your application and return later to work on your application, select “Draft” in Change Proposal Workflow state and click the Publish button. Subsequently, when you return to your application and ready to submit, select “Submit for Review” in Change Proposal Workflow state field and click the Save button.
  5. You will receive a confirmation email once you have successfully submitted your application.
  6. Do contact [email protected] if you have issues with the application.


Proposal submissions are open from 30 Jul 2019 10:00AM to 31 Oct 2019 12:00AM