2. Clean sump pit without requiring workers to be in confined space

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

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

• Cleaning of sump pit is currently performed by workers that are trained to work in confined spaces and at height. It is labour-intensive, time-consuming and carries certain risks.
• Sum pits are cleaned once every quarter and 3 men may take up to 3 hours to clean a typical sump pit.
• Currently, the worker has to enter the sump pit, shovel the debris into a large bag and lift the bag up with either an onsite hoist or lorry with lifting crane.
• Develped product will be used by the maintenance contractors and pump system subcontractors performing the cleaning works
• Refer to attachment for photos of sump pits and debris

• The average dimension of a sump pit is 8.5m x 7.3m x 17m depth, with the largest being 15m x 14m x 25m depth. Amount of debris per pit is estimated at 1000kg, depending on sump pit size. Debris typically composed of leaves, mud, sand, silt, gravel and rubbish (water bottles, plastic containers, etc.). Typically, the largest pieces of debris are branches and 1.5L bottles.
• The target cleaning time is within 1 hour, with 3 or fewer men. Solution should be self-powered.
• The space has high humidity and may have potentially flammable and toxic gases (refer to Technical Advisory on Working Safely in Confined Spaces). Other agencies (e.g. PUB, HDB) may also benefit from this solution.

Working prototype – Q3 2020

1. Ability to remove debris from sump pit without workers’ presence in the pit.

Pilot deployment – Q1 2021

1. Ability to clean sump pit within 1 hour
2. Ability to take before/after photos of the cleaning

Working prototype- Q3 2020

Pilot deployment - Q1 2021

What solutions we are not interested in?

Any solution that still requires a worker to physically enter the sump pit.

Market Potential for proposed solution/product

Solutions made may be scaled and extended to users in other LTA divisions, statutory boards and the marine and heavy industries. Specifically, in the maintenance of large drains, canals, tanks (PUB), sump pits, water holding areas (HDBs) and large tanks (marine and heavy industries).

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.