Amdt 0003 Q and A Document.pdf
PDF 62 KB Posted
- Attached to
- Barkley Dam Spillway Machinery Painting
- Solicitation number
- W912P526BA003
About this file
This is a Questions and Answers (Q&A) document from Amendment 0003 addressing contractor responsibilities and requirements related to spillway gate maintenance work.
The document clarifies three key operational issues: First, the Contractor is responsible for securing and locking the spillway gate and hoisting machinery in a safe position during removal of the motor, primary speed reducer, and brake assembly. The machinery must be mechanically restrained when the brake is uninstalled because the weight of the hanging chains (approximately 10 kips) is sufficient to drive the sprocket. Second, the Government defers to the Contractor's preferred means and methods for temporary gate support and restraint, with the constraint that any dogging of machinery should account only for the self-weight of the chains when the brake is removed. The Government is unlikely to approve methods that support the gate while suspended in the air. Third, the lifting chains are intended to remain installed and in service during the work as long as they can be adequately protected from surface preparation and painting activities per General Note 7. These answers establish that the Contractor assumes responsibility for work sequencing safety measures and temporary restraint systems while maintaining flexibility in execution approach.
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Other files
| File | Type | Posted |
|---|---|---|
| Site Visit Sign-In_8.6.2026_Redacted.pdf | ||
| Solicitation Amendment W912P526BA0030003 SF 30.pdf |
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Text version
Amendment 0003 Q&A Document
Question 1: During removal of the motor, primary speed reducer, and brake assembly, will the Government secure or lock the spillway gate and hoisting machinery in a safe position, or is the Contractor responsible for providing temporary blocking, rigging, mechanical restraints, or other means necessary to prevent movement of the gate and hoisting machinery?
Answer 1: The contractor will be responsible. When the brake is installed, it can be relied on to hold the gate in place. When the brake is uninstalled and the gate is on the sill, then the machinery would have to be locked in place, because the hanging weight of the chains are heavy enough to drive the sprocket.
Question 2: If temporary gate support or restraint is the Contractor's responsibility, please provide the required method, design criteria, gate loads, allowable support/attachment locations, and any engineering or submittal requirements.
Answer 2: This would be up to the contractor’s preferred means and methods;
however, the dogging oƯ of the machinery should only be for the self weight of the chains (roughly 10 kips) when the brake is removed. It is unlikely the Government would accept something to dog the machinery with the gate suspended in the air.
Question 3: Please confirm whether the lifting chains are intended to remain connected and in service during this work, as General Note 7 identifies the lifting chains as components to be protected from surface preparation and painting.
Answer 3: The intent was for the chains to remain installed as long as they can be protected.
File details come from the government source that posted it. Updated .