FOUO C04.07 Solicitation Q&A #2.pdf
PDF 51 KB Posted
- Attached to
- Facilities Bridge Cranes Federal contract opportunity
- Solicitation number
- N4523A21Q5702
About this file
This document contains questions and answers regarding Solicitation N4523A21Q5702 for bridge cranes. The Navy is seeking to procure two double girder, pendant controlled, top running, overhead electric traveling cranes with single hoists to replace existing 5-ton and 15-ton cranes at Building 455 of Puget Sound Naval Shipyard in Bremerton, Washington. The cranes must be designed, fabricated, assembled, shop tested, delivered, installed, inspected, field tested, and made ready for use. Storage for the new crane bridges will be provided on site. While the new overhead electrification systems could be installed on the opposite walls from the existing locations, this may require unnecessary additional work such as rerouting wiring and addressing crane envelope interferences. The Navy does not require electrical work upstream of the existing main disconnect switches.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| FOUO C09.0 N4523A21Q5702 Amendment 001.pdf | ||
| FOUO C04.05 Solicitation Q&A #1.pdf | ||
| FOUO C04.04 Exhibit A FAR 52.204-24 Provision Letter.docx | DOCX document | |
| FOUO C04.02 Attachment 2 Badging Requirements.pdf | ||
| FOUO C04.03 Attachment 3 Corporate Experience Data Sheet.doc | DOC document | |
| FOUO C04.0 N4523A21Q5702 Bridge Crane Solicitation.pdf | ||
| FOUO C04.01.1 SOW Attachments PDF Portfolio.pdf | ||
| FOUO C04.01 Attachment 1 SOW 10-30-2020.pdf |
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Text version
Solicitation N4523A21Q5702 Q&A #2
1) Can we get as built drawings for the building and cranes with crane weights?
A: The Government does not have current drawings for this crane.
2) Will the site remain in operation during the demo and installation process?
A: Yes the building will remain operational to the fullest extent.
3) Will the Navy provide storage space for the new bridges to be stored on site or require them to be placed in controlled storage until ready to install?
A: Storage will be provided on site. Lay down space will be provided in or around the building for the duration of the project.
4) Is installing the new conductor bar on the opposite side of the existing power an option?
A: The new overhead electrification (conductor bar) system of each crane may be installed on the opposite wall from their currently installed locations. However, relocating the overhead electrification systems will cause for a greater number of crane envelope interferences to be mitigated by the structural design of each crane (end truck and personnel hand rails).
Additionally, relocating the overhead electrification system to the opposite (respective) ends of the cranes will also require the circuit to be ran up to and across the ceiling, then back down to a height suitable for the overhead electrification installation elevation. This may be unnecessary work. As currently laid out, the wiring between each crane’s main disconnect (actually molded-case circuit breakers within a load center) and the respective overhead electrification system connection points is ran from the load center straight up the column to the 5T crane’s overhead electrification to the West and the 15T crane’s overhead electrification to the East (each circuit ran in its own conduit).
5) Navy has plans to reuse the existing wiring feed from sub to main disconnect, then contractor would suppling the forth leg ground?
A: The existing main disconnect switch for each crane is actually a molded-case circuit breaker located within a single load center that is mounted to one of the runway support columns in the center of the runways. This load center will have a ground bus for connection to the new grounding conductor bar; a new ground wire between the upstream substation and the load center’s ground bus is not warranted. The Govt. does not anticipate needing any electrical work upstream of the existing main disconnect switches. In accordance with 1.6.2.2 of the technical specification, the contractor shall verify, on-site all electrification information necessary to install new runway conductors/grounding, conduit, and wiring from the crane to the building control panel.
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