80KSC023R0013 Amendment 0004 Questions and Answers.pdf

PRE PROPOSAL QUESTIONS AND ANSWERS 80KSC023R0013

No. Reference for Question (Section Paragraph/Page) QUESTION Answer Amendment

Number

Drawing 79K41054, Page V-103 What are the narrowest clearances from the Freight Elevator to Room 3248? Refer to Sheet E-403, Flag H - Freight Elevator main hallway measures approx. 95 inches from asbuilt drawings (does not account for any wall mounted equipment that may provide obstruction). Method and route of transportation to be approved by Government prior to start of work.

Drawing 79K41054, Page EW-415 What is the weight capacity of the Freight Elevator? Capacity of the freight elevator is 25,500 pounds. Contractor to coordinate with the Government elevator shop prior to usuage of the elevator 0003

Drawing 79K41054, Page E-004 and Page E-109

Where is the correct location of ROOM 1695? On drawing page E-004, the location of ROOM 1695 is shown on South West of building; on page E-109, ROOM 1695 is shown on North East of building.

The E-109 detail is for the Northeast Corner of Room 1695 (not the building). Room 1695 is on the Southwest Corner of the overall building as indicated on E-004. 0003

Drawing 79K41054, Page EW-405 Are there DEMO Drawings for RM 2276? Install for RM 2276 is shown on page EW-405.

We would like to have DEMO Drawings for RM 2276.

The area to be occupied by SS-WB is currently open space. SS-WG demolition is on Sheet EW-415.

Drawing 79K41054, Page EW-413 How to convert Switchgears SS-WH and SS-WJ to J-BOXes without losing structure integrity? As Listed, we believe the switchgears will lose structural integrity. There are no details on how to convert to J-BOX.

Reference Drawing EW-413. Basis of design assumes typical switchgear construction which is side panels and components being attached to an overall supporting frame. Modifications generally include installing cover plates over holes left by transformer and breaker removal. Bus work removal is also specified but could be modified based on existing conditions encountered during modifications.

Drawing 79K41054, Page EW-419 How to convert Switchgear SS-WG to J-BOX without losing structure integrity? As Listed, we believe the switchgear will lose structural integrity. There are no details on how to convert to J-BOX.

Reference Drawing EW-419. Basis of design assumes typical switchgear construction which is side panels and components being attached to an overall supporting frame. Modifications generally include installing cover plates over holes left by transformer and breaker removal. Bus work removal is also specified but could be modified based on existing conditions encountered during modifications.

Drawing 79K41054, Page EW-427 How to convert Switchgears SS-WE and SS-WF to J-BOXes without losing structure integrity? As Listed, we believe the switchgears will lose structural integrity. There are no details on how to convert to J-BOX.

Reference Drawing EW-427. Basis of design assumes typical switchgear construction which is side panels and components being attached to an overall supporting frame. Modifications generally include installing cover plates over holes left by transformer and breaker removal. Bus work removal is also specified but could be modified based on existing conditions encountered during modifications.

Drawing 79K41054, Page E-701 Due to the weight difference and over twice the delivery lead time, can Dry Type

Transformers be considered verus the Liquid-Filled Type?

No. The size of dry-type transformers and associated individual transformer switching and protection was deemed to large for the available space. 0003

Drawing 79K41054, Pages EC-414 and

EC-421

Is there a possible different configuration for the "Reverse" Transformers? Some of the Transformers, such as TX-CR, are shown with the Primary side on the right ("Reverse").

Our past experience is that many of the manufacturers will only provide Transformers with the Primary on left side and Secondary of right side.

No. Basis of design is Eaton Cooper transformers which will provide a high voltage right-side configuration. Existing conditions and work space requirements will require the use of hight voltage right side transformers. Reference Note D on Sheet E-701 where high voltage right side transformers are required. TX-TEMP1 and TX-TEMP2 are to be turned over to the Government after use for temporary power as high voltage right side spare units.

Drawing 79K41054, Page E-701 Do all Transformers have to be provided by the same manufacturer? Left and right side pad-mounted transformer primary compartment configurations may be provided by different manufacturers (maximum of two pad mounted transformer manufacturers). 0003

Drawing 79K41054, Pages EC-421, EC-

434, EC-443, EE-419, EE-429, E-701

Can "Re-Manufactured" Transformers be considered? No re-manufactured equipment of any kind is to be provided on this project.

Drawing 79K41054, Page E-701 If we protect the flooring, can the Liquid-Filled Transformers not be drained? No historical weight load information is available for the existing transformers when dry or oil filled.

When originally installed, the transformers were most likely moved into their final position without oil.

The Government only recommends transportation of oil filled transformers under the following conditions:

-The oil is confirmed, by the construction contractor, to be non-hazardous. If the transformer oil contains PCBs, then the Government recommends draining and containerizing the oil prior to moving. NASA to confirm or clarify.

-The contractor can transport the existing transformers with oil across slabs on grade, but additional structural analysis, at the contractor's expense, would be required for transporting oil filled transformers across elevated slabs. In additron, the contractor to make sure and verify the tranformer weight does not exceeed the freight elevator capacity (25,500 Pounds) -The construction contractor determines the actual weight of existing transformer with oil.

-For all elevated slab transport corridors, the construction contractor must furnish a signed and sealed structural analysis, in accordance with ASCE 7-16, to document that the structural capacity of the existing floor structure system is not exceeded by transporting the existing transformers with oil. If the existing floor structure does not have adequate capacity, the construction contractor may return to the original scope of work (drain oil, then transport) or provide signed and sealed structural modifications (temporary and/or permanent) to reinforce the existing slab and provide sufficient capacity to transport the existing oil filled transformers. Refer to Sheet E-001, General Note - Demo #2, surfaces/furnishes not intended for demo to be protected by contractor.

PRE PROPOSAL QUESTIONS AND ANSWERS 80KSC023R0013

No. Reference for Question (Section Paragraph/Page) QUESTION Answer Amendment

Number

13 N/A Who does the testing for PCBs and draining before moving existing Transformers? Refer to Sheet E-001, General Note 13, Contractor to test and drain transformer oil. Government will priovide containers for transformer oil. 0003

N/A Can you provide KSC Drawing Number 81K03331 Rev. AF? No. However 81K03331 Rev AG is newer and will be provided on SAM.gov for informational purposes with Amendment No. 003. 0003

N/A Can you provide KSC Drawing Number 81K03331 Rev. AG? Yes, see No. 14 response above. Also, the Government is providing Drawing 81K03320 Rev E on

SAM.gov for informational purposes with Amendment No. 0003. 0003

Drawing 79K41054, Page E-105 We see the request for a SEL-3530 RTAC, but do not see it described in the specification.

What is the purpose for the SEL-3530 RTAC?

What information would they like to send over discrete I/O between relays? Can we send the same information over serial or ethernet between the 451 relays?

The SEL-3530-4 Real-Time Automation Controller gathers all the communications between SEL relays and send them back to the main SEL Relay central monitoring system inside the KSC Power Console at the LCC. The SEL-3530-4 (along with SEL-2725 and SEL-2407) is required by Note M on Sheet E-105 for existing communications protocol to the central monitoring system. Digital data requirements to/from the KSC central monitoring system is indicated on Sheet E-106. Discrete hard-wired signals between 451 relays are indicated in Items B and C on Sheet E-106.