Hydro Flush and Inspect

Added: Jun 26, 2017 5:08 pm Work will consist of cleaning by hydro-flushing and inspecting the 2" diameter shale drain pipes in each manhole. Hydro-flushing and inspecting the drains angled
approximately 2° upward (looking upstream) from horizontal in tunnels 1 through 5 and the one drain extending upstream in tunnel 6 is considered the base contract and hydroflushing and inspecting the four drains angled approximately 2° upward (looking
upstream) from horizontal radiating out towards the right abutment is considered option 1 to this contract. Details of the work are included in Part 5, Specific Tasks.
Initially the contractor is required to conduct test hydro-cleaning and camera inspections (before and after hydro-flushing) for up to two test section of pipe. Details are in included in Section 5.2.
Visual inspection of the drains will be done with camera equipment able to enter and record the condition of the drain, to be included in a detailed formal report that will thoroughly document the condition of these features.
The contractor shall provide daily logs (report) which describes the activities, problems/obstructions, findings etc. for each day on site and all features inspected. Detail are included in Section 5.6.3.
Deliverables from this work will include 3 DVDs of the inspection footage and a report that summarizes the procedures, pertinent field activities, problems encountered and measures taken to alleviate these problems and findings of all inspections. The report
shall also include individual inspection logs that summarize the condition of each pipe and documents the location of any significant observation(s). Details are included in Section 5.6.4.
The contractor shall perform these services as noted in this PWS. All work shall be conducted in accordance with current professional standards, Corps of Engineers
policies, regulations, and procedures. The Contractor is responsible for supplying all equipment, supplies, materials and personnel necessary for the completion of this work.