W9127N25R0007 Industry Day Q and A - John Day Dam Fish Pump Emergency Repair Project.pdf

John Day Dam Fish Pump Emergency Repair Project Solicitation No W9127N25R0007

Industry Questions

What are the projects daily work hours the contractors can perform under this project?

John Day staff works Monday thru Thursday, 0630-1700, not including holidays. The contractor will be free to work any schedule that is convenient, provided they have completed a background check, access request, and have received a badge from the John Day Security Office. Aligning their schedule with the project would facilitate easier coordination for crane operations and other support that may be required.

o One thing I wanted to add, since some of the work performed onsite will be in a confined space, the contractor must have a rescue team onsite. Or have some of their team members trained for rescue. I will check with our safety section to find out more about this requirement and I will share it with the team. I know project must have rescue team members on standby when personnel are entering confined spaces.

Has this project been sole sourced to Philadelphia Gear?

We will be doing a sole source to Philadelphia Gear as the subcontractor.

What are the work hours for Philadelphia Gear and their ability to meet project timeframes and in water work windows?

Philadelphia Gear says they will get back to us on this.

Overhaul will be at their Santa Fe Springs, CA facility?

o It would be preferred to have Philadelphia gear perform the overhaul at their facility where they have all their tooling to perform the work.

When was the last time these units were overhauled?

Gearbox 2 around the 1980’s and early 2000’s Gearbox 1 has never been removed or swapped, not much information on either.

Pump 3 was overhauled in 2011

Any modifications to the equipment?

Gearboxes have been rebuilt to different specs. Can we elaborate?

We are currently using two different versions of the Philadelphia Gear 90ᵒ, 7:1 gear reducer for fishway attraction water. The main difference between the two styles are the anti-rotation device designs. South Fish Pumps #2/#3 utilize a Sprague Clutch mounted to the input shaft, while #1/spare gearboxes use an anti-reverse ratchet system attached above the intermediate shaft upper guide bearing.

If SFP #2&#3’s gearboxes are original equipment present at the Dam’s commissioning, the change to the Sprague clutch style necessitated a substantial modification to the gearbox cases. While the rotational/braking force is transferred thru the top of the gearbox in the original (anti-reverse ratchet system) design, the newer (Sprague/Over-running Clutch) version mounts and transfers force thru the front/input side. This design requires structural upgrades to the gearbox.

Both anti-rotational systems appear to be effective, with vastly differing maintenance requirements. General maintenance is much higher on the Sprague Clutch, with 32 oz of approved grease being administered every 30 running days. The application is considered severe use during the 24-hour, 10.5-month fish passage operations. The original design, however, requires no preventative maintenance. The anti-reverse ratchet system is significantly easier to replace, while the Sprague Clutch requires the gearbox be uncoupled from the pump and rotated

30ᵒ to remove/reinstall. There is an extreme difference in the cost of replacing worn anti-rotational devices, with the original design much quicker/less expensive.

All ancillary equipment, such as both oil circulating pumps, filters, etc., have been consolidated and moved to the rear of gearbox #3. An oil spill catch-pan is installed under the oil circulating assembly. With these pumps operating over water that eventually makes its way to the drainage sump, this is a vital upgrade. During the recent overhaul of SFP #3’s gearbox, it was noted by a Philadelphia representative, Pete Pedersen, the oil circulating internal piping was a recent design upgrade. With very little engineering documents and tribal knowledge available, he stated it was most likely improved during the 2011 overhaul.

At this time, I cannot think of any other design changes.

Who were the former contractors that have worked on the equipment?

Philadelphia Gear. Any others?

James Leffel & Co. was the main contractor for the work done on SF Pump #3 in 2011. It is recommended to whom ever received the contract bid to reach out to this company when it comes time to align the gearbox to the pump and turbine.

Current spare gearbox has a tag that it was repaired by Rapidgear Repair from Houston, Texas.

The contractors use the government lifting equipment, cranes etc? Any lifting equipment the contractors can use?

Government personnel will operate the bridge crane, south fishway transfer carriage, and any other lifting devices or load handling equipment that may be required.

The contractor will be allowed to operate the Shaw-box lifting hoist which is currently mounted to a lifting beam over fish pump # 3. It should be noted that this equipment has not been load tested.

Can the government list project support timeframes? How much coordination notice will government personnel need to support contractor efforts?

During the work week, John Day leadership will require notification the night prior if the contractor requires support, so we can be ready to issue the job assignments in our morning meeting. If the contractor requires project maintenance support during the weekend, they will need to notify John Day leadership no later than 3pm on Wednesdays so we can coordinate overtime efforts.