Amendment_2_-_Provide_Drawings_&_Answer_Questions.pdf

DEPARTMENT OF THE AIR FORCE

21ST SPACE WING

13 September 2018

MEMORANDUM FOR POTENIAL CONTRACTORS

FROM: 21 CONS/PKAB

SUBJECT: Amendment 2, FA2517-18-R-5016, Repair Relays PSS

1. This is Amendment 2 to the subject line project in order to: provide potential offers with electrical drawings of the PSS and to provide answers to the following questions:

a. Question 1: During construction on the switchgear will the entire switchgear be de-energized? Or will one half of the bus be energized while work goes on the other?

Answer: Half of the bus will be energized.

b. Question 2: Should part of the proposal include having maintenance done on the breakers? Or has there been a regular maintenance program where a breaker company has come in and re-worked and cleaned your breakers?

Answer: Regular maintenance has been performed approx. every 3 years. Last maintenance (relay and breaker testing) was performed 11/8/16.

c. Question 3: Is there a single line electrical drawing of the switchgear that is available for this bid? It should have been distributed to all applicants so they know what they are bidding on.

Answer: Please see attached one line diagram.

d. Question 4: How old is the switchgear?

Answer: It was installed in 2006.

e. Question 5: Is there an up to date set of prints. Schematic drawing, wiring diagram and cubicle diagrams.

Answer: Attached is the most current drawings available.

f. Question 6: Is there an existing ATS system on this switchgear?

Answer: No ATS on the switchgear.

g. Question 7: What is the voltage of the switchgear? 5kV? 15 kV?

Answer: 15 kV

h. Question 8: Warranty? What items are you requiring warranty on? All new products, relays, wiring, protection settings, ATS scheme and communication back to the EMCS?

Answer: We require a minimum 1 year construction warranty on installation (your work). Product warranties for shall be turned over upon completion.

i. Question 9: What is the communication protocol for the EMCS?

Answer: Modbus.

2. If you have any questions, please email the undersigned at dylan.huntley@us.af.mil.

DYLAN J. HUNTLEY

Contracting Officer

Attachments:

1. Electric One Line – Repair Relays PSS

2. Front Elevation – Repair Relays PSS

3. Unit 7 Layout – 10752-04-L003 – Repair Relays PSS