DOCUMENT 009101 - ADDENDUM NO. 2
Issued to all Bidders:
Date: October 29, 2014
Contract Name: 69,000 Volt Transformers
SUA Bid No.: #04-14/15
This addendum forms a part of the Bid described above. The original Contract documents and any prior
addenda remain in full force and effect except as modified by the following which shall take precedence
over any contrary provisions in the prior documents.
BIDDER QUESTIONS AND ANSWERS:
1. See the document included with this addendum “SUA Bid 04-1415 Bidders
Correspondence Log.” This document contains the questions and answers provided in
Addendum No. 1, and, in addition, contains a question 3 and corresponding answer.
Each Bidder shall acknowledge receipt of this addendum by affixing signature below, by noting this
addendum on Bidder’s Bid Form, and by attaching this addendum to the Bid.
ACKNOWLEDGEMENT
The undersigned acknowledges receipt of this addendum and the Bid submitted is in accordance with
information, instructions, and stipulations set forth herein.
Bidder: ___________________________
By: ______________________________
Date: _____________________________
END OF DOCUMENT 009101
75644.5110
009101-1
Issued for: Addendum 2
Issue Date: 10/29/2014
Revision: 0
Stillwater Utilities Authority
SUA Bid #04-14/15 - 69,000 Volt Transformers
Bidders' Correspondence Log
Item Category Date Rcv'd
1
2
3
Question
RFP
Section
Technical Exception, Clarification or Question
The rating 20/25/28 MVA is calculated improperly. In order to
provide the ONAF rating, 25MVA, a nonstandard capacity of 25%
Attachment (typically 33% for this rating) is required. The 28MVA rating would
13-Oct-2014 B, SECTION be another 12% above the 25MVA which is consistent with a 55/65
337313
degree C rise. Your specification indicates a 65 degree C rise and
two stages of fans. Please reconsider the specified capacity and
issue an addendum as necessary.
N/A
As you may guess, [without an answer to question 1], we are
unable to process this design, compressing the time needed to
provide a comprehensive quotation. Unless an addendum is
received today, please grant an extension allowing submittal on or
before Friday, November 7th.
Question
13-Oct-2014
Question
The drawing that is provided in the spec places the LV bushings on
ANSI segment 4 and the HV bushings on segment 2. The problem
Attachment is there isn't enough space on segment 2 to locate 4 HV bushings
24-Oct-2014 B, 481923- and maintain proper clearances. Typically we would see the LV
SK1
bushings mounted on the front wall or segment 1 and the HV
bushings on the cover on the opposite side, segment 3. Is that
arrangement acceptable?
Resp.
Initials
Response
Date
SUA Response
TOB
Supplier shall provide a Bid for transformers specified in SECTION
337313 with rating of 16.8/22.4/28 MVA. Please see the revisions 15-Oct-2014
to the Contract documents as identified in Addendum 1.
TOB
Extension to Friday, November 7th will not be granted.
TOB
The drawing 481923-SK1 is shown with IEEE segment 1 rotated
counterclockwise 45 degrees from the orientation in Figure 1 of
IEEE C57.12.10. For the generator step-up transformer specified
in SECTION 481923, the LV bushings shall be mounted in
segment 1 on the side (front wall) of the transformer as specified 29-Oct-2014
and as shown on 481923-SK1. The HV bushings shall be mounted
on the cover in segment 3 as you have stated, as is shown in
Figures 1 and 3 of IEEE C57.12.10, and as shown on 481923SK1.
Page 1 of 1
15-Oct-2014
Bidder Reply
Response
Date
SUA Response
Response
Date