12 QandA 28Feb2020.docx

Questions & Answers – FA8125-20-Q-0028 Amendment 05

1. Distance from water supply to the Wet Collector Location?

25 feet

2. If the collector is constructed of Stainless Steel to protect from corrosion, is the DuraPlate 235 coating required?

DuraPlate 235 not required if constructed from Stainless Steel.

3. With the space observed during the site visit for the collector, why would a collector that is 57” wide and less than 10’ long not be acceptable?

57” wide and less than 10’ long would be acceptable.

4. A Wet Scrubber is not 100% efficient and if not maintained can allow a significant amount of dust to pass through to the fan. As airfoil fan wheels are recommended for only clean airstreams this is not the best choice for a wet scrubber. A backward inclined wheel or radial wheel would be more appropriate, cost less and last longer. Is a backward inclined fan wheel acceptable?

Yes, a backward inclined fan wheel would be acceptable.

5. Will we, the “contactor” be required to remove the following items to allow the new wet dust collector to be supplied and installed?

A. Remove from location, the Old Clemco Dust Collector?

B. Remove from location, the Old Clemco HEPA Box?

C. Remove from location, the Old Clemco Blast Tank System?

D. Remove from location, the Old Clemco Reclaim system on the Blast Tank?

YES to all of the items listed above.

6. If any of the above items are to be removed by the “contractor” Tinker AFB will first take care of all Hazardous Waste, decontaminate, clean and after the “contractor” has removed, Tinker AFB will handle or haul off as needed, is this correct?

YES

7. Will we, the “contractor” be required to modify, supply and install inlet air vents into the old Clemco Blast room to allow air flow from one side to the exhaust side?

YES

8. There will not be any kind of roof or wall penetrations for intake air or exhaust air duct work or any other items for this job, is this correct?

YES

9. Tinker AFB will approve and shut off the overhead water supply to allow the “contractor” to tap in, supply and install a new water line to supply the new wet dust collector system, is this correct?

YES

10. Tinker AFB will supply a water drain or water removal as needed for the new wet collector system, is this correct?

YES

11. Please confirm the air flow requirements for this collector that is stated at 4400 SCFM.

Actually 6500 CFM