B.08.03 W9127S21R0001- Amendment 0003.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

Amendment 0003 does the follow ing:

1. Provides Government responses to RFIs.

2. Provides a Summary of Changes to the Specifications/Draw ings. Actual revised document(s) w ill be provided in a later amendment.

3. Incorporates Wage Determination AR20210019, dated 26 November 2021.

1. CONTRACT ID CODE PAGE OF PAGES

1 30

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 03-Dec-2021

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W9127S21R0001

X 9B. DATED (SEE ITEM 11)

30-Sep-2021

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

03-Dec-2021

CODE

CONTRACTING DIVISION

USACE, LITTLE ROCK (W9127S)

700 W. CAPITOL AVE, RM 7315

LITTLE ROCK AR 72201-3225

W9127S 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00 10 00 - SOLICITATION

The following have been added by full text:

GOVERNMENT RFI RESPONSES

(BEGINS ON NEXT PAGE)

W9127S21R0001

Controlled Unclassified Information (CUI) Only

Bid Inquiry Contractor Report All Inquiries

Project: Norfork Turbine Replacement and Generator Rewind Review: NF Turb Repl & Gen Rew Bidder Inquiry (00002) (sorted by CommentID ) Displaying 124 inquiries.

Id Discipline Sheet Detail Spec

9434546 Contracting Form 1442 Site Visit W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI) the Site Visit is schedule from October 12 -14 2021 on form 1442. Is the site accessible for three days?

we notice the site visit starts at 10:00 am.

Is this the time for the site visit starts every day? if so, when time does the site visit end daily?

On: Sep 30 2021.

Government Response. . The site visit is scheduled to occur over the course of three days, October 12-14, 2021, beginning at 10:00 AM CDT each day.

Contractors will be off site NLT 4:00 PM CDT each day. On: Sep 30 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9434793 Contracting standard Form 1442 Site Visit W9127S1R0001

Comment Classification: Controlled Unclassified Information (CUI)

Please provide the Site Visit "Covid" requirements for the site visit. Is there a visitation sign up form we need to submit?

thank you for your quick response

On: Sep 30 2021.

Government Response. . 1. Refer to clause FAR 52.236-27 Alt I in the solicitation package and the response to Inquiry ID: 9434821.

2. An "RSVP" is not necessary for the site visit. On: Oct 01 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9434821 Contracting Pg 24 of 26 52-236-27 Site Visit W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Please respond to the Three Specific CDC regulation questions for the Norfork Powerhouse site visit October 12, 13, & 14, 2021.

1. Is proof of a PCR test required?

2, Is Proof of a vaccination required?

3. are masks required to be worn inside and outside the plant.?

(Attachment: B.08.02+W9127S21R0001.pdf) On: Sep 30 2021.

Government Response. . 1/2. Official visitors will be asked to complete DD Form 3150. Official visitors who are unvaccinated, as defined in this guidance, or who decline to volunteer their vaccination status, must show an electronic or paper copy of negative results from a COVID-19 test administered no earlier than 3 days prior to their visit. If an official visitor is unable to show a negative COVID- 19 test result, the visitor may be provided onsite self-testing, if available, or will be denied access to the DoD facilities to which access is sought. Service members who are not on active duty at the time of their visit are subject to the requirements in this paragraph.

3. In areas of substantial or high community transmission, DoD requires all Service members, Federal employees, onsite contractor employees, and visitors, regardless of vaccination status, to wear a mask in an indoor setting in installations and other facilities owned, leased or otherwise controlled by DoD.

Service members, Federal employees, onsite contractor employees, and visitors who are not fully vaccinated also need to continue to physically distance consistent with applicable CDC and DoD Force Health Protection guidance. On: Oct 01 2021

Government Response. . This new text supercedes ALL previous replies.

Please disregard previous reply as it cites an Executive Order for which SWL has not received implementation guidance. At this time all visiting personnel should wear masks and socially distance in accordance with CDC recommendations. On: Oct 06 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435132 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Due to the expected duration of the project, our surety companies will not accept to issue one bond for the 2 units as it exceeds 5 years.Would it be acceptable for the District to allow Contractor to bond each unit separately? If not, would the District consider a rolling bond approach as it has been implemented in the past by USACE on other projects?

On: Oct 01 2021.

Government Response. . Alternate bonding approaches will be considered. On: Oct 26 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435180 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Regarding the Turbine rehabilitation Past Performance (Factor 1.1), is it possible for the District to modify the requirement according to the following:

1.In par. d., replace the 20-80 MW requirement with the 130-inch or greater Francis Turbine requirement. The combination of the requested 130-inch diameter and the 20-80 MW requirements makes it impossible for the contractor to provide relevant Past Performance.

2. In par. e., can you confirm that the design projects that have incorporated a dissolved oxygen (DO) amelioration system are not subject the diameter and MW requirements?

On: Oct 01 2021.

Government Response. . 1. The MW will be removed for the Francis runner requirement; change will be seen in an upcoming amendment.

2. It has been confirmed that the DO requirement does not fall under the MW requirement of the Francis runner. On: Nov 08 2021

W9127S21R0001

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435189 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Regarding the Generator Rewind Past Performance (Factor 1.2), is it possible for the District to modify the 20-80MVA with 20-200MVA ? The maximum of 80MVA greatly limits the number of relevant projects.

On: Oct 01 2021.

Government Response. . The range will be updated to 20-200MVA in an upcoming amendment. On: Nov 15 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435195 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 01 15 10.10 46, Part 1, par. 1.1 - Security Required USACE is asking for a level 2 security clearance for workers on site. The contract states that this is a six month process to get someone cleared for site access. From an execution standpoint this will be extremely difficult to manage, if not impossible. Can the Government confirm the intent ?

On: Oct 01 2021.

Government Response. . Level 2 security requirements require background investigations that may take up to 6 months to complete. However, Contractor employees may commence work on-site once the background investigation is started and all required submittals have been received along with fingerprints for those employees. Exceptions to Level 2 requirements may be made, at the discretion of the COR, for short-duration employees that will not access the control room or spreader room. For these employees, the contractor may either provide Level 1 security and fingerprints or have that employee escorted by a Level 2 employee.

This clarification will be included in an upcoming amendment. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435218 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 01 50 00, par. 3.5.3 - Storage Area It is our understanding that the contractor storage and trailer area is a small area inside of the secure area near the powerhouse. It is shown on one of the drawings. Is there additional storage other than that small area? Is there a requirement for fencing around that area identified on the drawing?

On: Oct 01 2021.

Government Response. . Contractor trailer area is shown on G-105 and is separate from the designated storage/staging areas. Sheet G-106 identifies the location of an additional storage area. Fencing is not required around the "contractor staging area" identified on sheet G-101. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435225 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Is there power available for the break trailers?

On: Oct 01 2021.

Government Response. . There is no government-provided power available for the trailers. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435233 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 01 11 10.00 26, par. 1.4 - Work Rescheduling The specification is asking for a 4 days x 10 hrs schedule.

Is a 6 days x 10 hrs schedule acceptable ?

Is a double shift permitted for some of the site activities ?

On: Oct 01 2021.

Government Response. . Refer to Specification Section 01 14 00.00 46 paragraph 1.3.1 WORK HOURS for information on work schedule days and hours.

Specification Section 01 11 10.00 26 paragraph 1.4 WORK RESCHEDULING will be deleted in a forthcoming amendment. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435251 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 00 10 00, Pricing Schedule: CLINs 0153 and 0180 seems to pertain to components that are no longer part of the Specifications. If so, can the Government please removed those CLINs?

On: Oct 01 2021.

Government Response. . CLINs 0153 and 0180 will be removed from the bid schedule and spec section 01 22 00.00. This will be completed in a forthcoming amendment. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435255 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 00 22 16, Factor 2: Can the Government please consider providing Liquidated Damages for the Turbine weighted Efficiency (with and without aeration)?

On: Oct 01 2021.

Government Response. . Turbine weighted efficiency, turbine maximum power, and turbine cavitation performance guarantees will be added to section 48 13 13.01 26. On: Nov 24 2021

Current Request Status: Request Closed

W9127S21R0001

9435258 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.01 26, par. 1.5.3.1: "the Contractor must pay damages to the Government as described in Special Contract Requirements." The Special Contract Requirements are not included with the bid documents. Can the Government please provide them?

On: Oct 01 2021.

Government Response. . The turbine weighted efficiency, turbine maximum power, and turbine cavitation performance guarantees will be added in section 48 13 13.01 26. The generator performance guarantees will be added to section 48 13 16.00 26. On: Nov 24 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435262 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 00 22 16, Factor 3: Can the Government please provide Liquidated Damages for the guaranteed combined DC I2R loss and stray load loss?

On: Oct 01 2021.

Government Response. . Performance guarantees for DC I2R loss and stray load losses will be added to section 48 13 16.00 26. On: Nov 24 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435264 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 22 10 00.00 26: Can the Government please provide the serial number found on the nameplates of the Woodward Herringbone pumps?

On: Oct 01 2021.

Government Response. . Unit 1 - Pumps 1 and 2 share a nameplate Size: 75 Serial No.: 180464

Unit 2 - Pump 1 Size: 75 Serial No.: 288601

Unit 2 - Pump 2 Size: 75 Serial No.: 288602 On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435719 Contracting Pg8 1.4.4 Inspection by Contractor Section 48 13 15.00.26

Comment Classification: Controlled Unclassified Information (CUI)

1.4.4 Inspection by Contractor

Will the USACE make the Generator available for inspection and data collection during the October 2021 Site Visit?

On: Oct 01 2021.

Government Response. . The cited language is not binding for the government to make the generator available until after award of contract. On: Oct 01

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435882 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

USACE has incorporated the clause 52.237-10 (Identification of Uncompensated Overtime). We believe that this clause would not apply in an Fixed Firm Price contract.

Can USACE considers removing this clause ? if USACE does not want to remove this clause, as specified by the clause, we have to provide a copy of its policy addressing uncompensated overtime with its proposal. If this is not applicable, do we still have to provide such a policy ?

On: Oct 01 2021.

Government Response. . The clause will remain in this solicitation and resultant contract. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9435997 Contracting Section 48 33 16.00.26 Pg 8 Inspection by Contractor W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

We understand the units will not be off line and available for taking data from the units. Will you have spare laminates, Stator Coils and Rotor Poles available for inspection during the site visit October 12 -14 2021?

thank you for your prompt response.

On: Oct 01 2021.

Government Response. . A spare coil will be available during the site visit. Spare laminates and rotor poles will not be available during that time. On: Oct 04 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9437215 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 16.00 26, par. 2.4.8: "Performing this test prior to manufacturing the production run coils will considerably impact the schedule if the two units are not manufacture back to back. Can the Government consider conducting prototype testing once for the entire project?"

On: Oct 04 2021.

W9127S21R0001

Government Response. . Clarification: Prototype coil testing is only required once, regardless of number of batches (described in list item "a" of par. 2.4.8).

In cases where coil manufacturing is split into two batches, a set of 6 production run coils from each batch must be pulled for voltage endurance testing as specified. These are production run coils, and so are not manufactured and tested prior to the start of production run coils. On: Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9437216 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 16.00 26, par. 3.2.1: Can the Government please define the time period between batches, beyond which a set of 6 coils shall be provided?

On: Oct 04 2021.

Government Response. . 6 Production run coils are required for VET testing from each batch, as specified in par. 2.4.8, list item (b). Separate batches are defined based upon any changes in the tooling made between manufacturing of sets of coils (such as, for making coils of a different design for a different project). That is to say, if there is a gap in production where the tooling is changed for production of other coils, that would constitute that a separate "batch" is being produced. On: Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9437218 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 16.00 26, par. 3.29 d): For EHS considerations, can the UV camera be used instead of performing the test in a darkened powerhouse?

On: Oct 04 2021.

Government Response. . Please prepare proposal(s) per the solicitation requirements. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9437269 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

For the site visit scheduled Oct 12-14, do we have to be there the 3 days or we can select the day we wish to go ?

On: Oct 04 2021.

Government Response. . All interested vendors should plan to attend the in brief on 12 October at 10:00 AM CDT. Then, personal discretion should be used. On: Oct 06 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9438424 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

FAR Clause 252.215-7011 (Requirements for Submission of Proposals to the Administrative Contracting Officer and Contract Auditor) requires that we submit our proposal to (a) The Administrative Contracting Officer; and (b) The Contract Auditor. Can you provide the contact information of the Contract Auditor ?

On: Oct 05 2021.

Government Response. . This clause was included in error. It will be removed in an upcoming amendment. On: Oct 26 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9438432 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.04 26 -3.15.11: The specification requests the Contractor 'provide' a field machining device and that the Contractor will retain ownership of the field machining device during the entirety of the contract. Can you confirm that the field machining device will not be provided to the Corps at the conclusion of the contract?

i.e. can you confirm that the field machining device is not part of the supply of the contract, but is rather a mobilisation for the purposes of the contract?

On: Oct 05 2021.

Government Response. . The field machining device is not part of the supply of the contract. The Contractor will retain ownership of the field machining device and will not be required to 'provide', lend, give, lease, furnish, bestow, or grant this to the Government. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9438435 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 01 26, -1.4.1 The Government summarizes the working stress for steel materials using von Mises-Hencky theory and adds in paragraph 1.4.2 specific values for exceptional load cases. But these criteria are not specifically detailed for Finite Element Analysis. The Contractor understands the stated allowable values, in paragraph

1.4.1 and 1.4.2, as Von-Mises primary membrane (Pm) and that different criteria, as detailed in the ASME BPVC sect VIII div II, will apply to other stress categories, including local membrane, primary bending, secondary bending and peak stress. This has been accepted and confirmed by the Government for other recent projects.

Can the Government please confirm that this interpretation also applies to this project?

On: Oct 05 2021.

Government Response. . This interpretation applies to this project. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9438437 Contracting Pg 8 Section 48 33 16.00 .26 W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

REQUEST No 9435997 States the USACE has a Stator Coil available for inspection at the site visit.

Is the referenced Stator coil a spare supplied by the Contractor during the 1978 rewind of the units?

On: Oct 05 2021.

Government Response. . The reference stator coil was supplied as part of the 1978 rewind. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

W9127S21R0001

9438438 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 09 97 02.00 26 - 3.1.3. The specification requests that blast cleaning to SSPC SP 5 (White-metal) must be done in the field after final erection, unless otherwise specifically authorized, for parts subject to continuous immersion. Many painted parts of the turbine are continually immersed, but will no longer be accessible after erection, or will have very limited access. For safety reasons, it is preferable to blast and paint embedded parts with the unit disassembled and the removable parts in specialized shops. Can the Government please clarify which parts are to be blasted and painted after erection of the turbine, if any?

On: Oct 05 2021.

Government Response. . The "after final erection" will be removed from paragraph 3.1.3. Embedded parts can be blasted and painted before final erection.

Non-embedded parts may be blasted and painted off-site and before final erection.

This will be completed in a forthcoming amendment. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9438440 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 09 97 02.00 26 – 3.5 System 5-E-Z specifies that the runner to turbine shaft fasteners are to be painted after installation. However, this system would require paint and sandblasting containment after assembly. Typically, only touch-ups of the paint are applied to the fasteners after installation. Can the Government please clarify?

On: Oct 05 2021.

Government Response. . The fasteners would be expected to be touch-up painted once they have been installed. On: Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9438441 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 09 97 02.00 26 – 3.5 System 6-A-Z requests SSPC SP 10 near-white metal cleaning and application of coal-tar epoxy paint on the watered surfaces of the scroll case and extension. Can the Government please specify what is the existing coating system on these parts?

On: Oct 05 2021.

Government Response. . The existing original paint system on the wetted surfaces of the scroll case is unknown. On: Oct 28 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9438442 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.04 26 - 3.15.6 This article specifies a maximum total indicated runout of 0.002'' for the surface of the facing plate surface after their installation on the bottom ring. The facing plates and bottom ring are large, flexible components that require large vertical axis mills. These large mills are less precise than the smaller mills used for machining rigid components such as shaft flange faces. The best that large mills can do is a runout of 0.005''. This 0.005'' limit is accepted on other projects for the Corps of Engineers for similar large components and we recommends it be adopted for this project as well.

On: Oct 05 2021.

Government Response. . Recent rehabilitation of a USACE owned larger unit (218 inch diameter g.p.c), using these same tolerances, on a large mill was done successfully. The total indicated runout shall remain at 0.002 inch. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9438443 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.04 26 - 3.17.2 This article asks for only 0.001'' of TIR over the bottom ring surfaces. Because they are large parts, higher tolerances are required.

Such low tolerances are typically reserved for rigid, smaller parts, such as thrust bearing runner surfaces, where runout is critical and where the appropriate machining tools exist. The best that large mills can do is a runout of 0.005''. This 0.005'' limit is accepted on other projects for the Corps of Engineers for similar large components and the Contractor recommends it be adopted for this project as well.

On: Oct 05 2021.

Government Response. . The specification section should have stated 0.003". This will be corrected in a forthcoming amendment. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9438444 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.01 26 – 1.1.1. This section specifies that "A profiled concrete filler was poured at the bottom of the penstock, downstream of the elbow. It is assumed that this was done in order to improve the hydraulics. The concrete filler effectively decreased the overall wetted perimeter in this area. Contractor should be aware of this modification and implement it into the design of the new turbine runner. Original documentation regarding this modification will be attached at the end of this section in Appendix A – FORMS AND ATTACHMENTS". No mention of these modification were found in Appendix A or in the other bid documents. The Contractor requests that the Government please provide the information regarding the penstock modifications.

On: Oct 05 2021.

Government Response. . The attachments were inadvertently not included in section 48 13 13.01 26. The Government will provide these documents in a forthcoming amendment. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9438445 Contracting Pg 8 B.08.02 + alt 2 Drawings W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Are there Generator drawings available from the 1978 rewind of the Generators to include a laminate drawings, Stator coil drawings, and Rotor Pole drawings?

On: Oct 05 2021.

Government Response. . Generator drawings from the 1978 Generator Rewind are included in the FIO drawing package. This includes drawings of the stator coil, for example, on sheet FIO-77. On: Oct 25 2021

W9127S21R0001

9438864 Specifications W9127S21R0001 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

What will be the status of the unit(s) during the site visit October 12-14? Will any of the unit offline/open? what will be the level of access in the pit?

On: Oct 05 2021.

Government Response. . During the site visit hours on 12-14 October, Unit #2 will be shut down. The unit will not be under clearance, nor unwatered, so attendees can only see what they could with the unit running. The hatch to the Rotor Housing and the door to the Air Housing may also be opened for attendees to look into, but not enter. On: Oct 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9439294 Contracting Drawings B.08.02 +alt 2 w9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Please provide Generator pictures of the back iron. these Photo's would be in some extent informative for us to provide a proposal design more close to reality.

thank you for your support

On: Oct 05 2021.

Government Response. . Photos of the back iron are unavailable at this time. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443045 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 01 22 00.00 10 : Items 0156 and 0183 (New turbine guide bearing shell). Can you clarify what is to be included in this bid item? Is the price for a complete new shell, independently of the refurbishment in the base cost, or for the price differential between a new shell and the refurbishment of the shell?

On: Oct 08 2021.

Government Response. . This is for the bearing shell only. In past work we have had issues with the in-service bearing shell cracking during an attempted rehab or are already cracked and not repairable. If this option is exercised, the babbit work and final machining would be done under CLIN 0089AC. On: Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443047 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.04 26 : Can you provide drawings or additional details of the existing gate mechanism, particularly the links, the pins and levers? We are especially interested in knowing the current shear pin breakage load or equivalent protection load.

On: Oct 08 2021.

Government Response. . All known/available drawings regarding the existing gate mechanism have been included in the FIO drawing package. The Government, at this time, has not been able to locate any further detail drawings of these components. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443049 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.06 26, par. 3.2.1 : We do not find the Inspection sheets any where in the specification as specified in this clause. (page no. 685)

On: Oct 08 2021.

Government Response. . These inspection sheets will be provided in an upcoming amendment. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443054 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.06 26, par. 3.3.1 : We do not find the Inspection sheets any where in the specification as specified in this clause. (page no. 687)

On: Oct 08 2021.

Government Response. . The inspection sheets will be provided in an upcoming amendment. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443060 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.06 26, par. 3.5.2 c: It is specified "The contractor must have option the to shipping the runner attached to the generator shaft " As the specification does not ask the refurbishment/inspec tion of generator shaft at offsite facility and hence the contractor does not have the option of shipping the runner attached to the generator shaft. Please clarify. (page no. 689)

On: Oct 08 2021.

Government Response. . Paragraph 3.5.2 (a) will be updated to allow for shipping of generator shaft to an offsite facility. On: Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443062 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.06 26, par. 3.7.3 a: It is specified "Refurbishment must be performed for both the thrust runner and guide runner in the same workshop. Final machining will be performed with the runner mounted to the generator shaft." As the specification does not ask the refurbishment/inspec tion of generator shaft offsite facility and hence it is not possible for the contractor to do the final machining of runner mounted to the generator shaft. Please clarify. (page no. 693)

W9127S21R0001

On: Oct 08 2021.

Government Response. . Paragraph 3.5.2 (a) will be updated to allow for shipping of generator shaft to an offsite facility. On: Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443068 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 16.00 26, par. 3.12 : It is specified that "The existing stator winding shall be removed by a third party. This includes all wedges, coils, connectors, RTDs, and circuit rings from the neutral connection to the main leads. A third party will abate all asbestos from the generator stator as part of this work." However we also found line items pertaining to this activity in price schedule. File name "B.08.02+W9127S21R00 01" , page no. 4/86, line item no. 0048 (remove stator winding) & page

no. 5/86, line item no. 0102 (remove stator winding). Please clarify. (page no. 804)

On: Oct 08 2021.

Government Response. . CLINs 0048 and 0102 will be removed from the pricing schedule in an upcoming amendment. On: Nov 17 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443071 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 16.00 26, par. 3.13.2 : (Optional) Stator core repair – We do not find any line item in price schedule for this scope of work. Please clarify where should we add price for this activity. (page no. 806)

On: Oct 08 2021.

Government Response. . CLINs will be added in place of deleted CLINs 0153 and 0180 for "(Optional) Stator Core Repair". The Bid Schedule and specification section 01 22 00.00 10 will be amended accordingly in an upcoming amendment. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443073 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 16.00 26, par. 3.24.2 : Rotor Inspection – We understand that this clause asks only for visual inspection of rotor. Please confirm our understanding. (page

no. 815)

On: Oct 08 2021.

Government Response. . It is confirmed that the rotor inspection described is visual only. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443076 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 22 00 00.00 26, par. 2.7.1 : It is specified that "All piping and valves must be replaced from the coolers to the generator housing wall." We understand that we need to replace only cooling water piping and valves connected to this piping. Please confirm our understanding. (page no. 470)

On: Oct 08 2021.

Government Response. . That is correct - only the cooling water piping is to be replaced. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443079 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 22 00 00.00 26, par. 2.7.1 : It is specified that "The thrust bearing oil coolers shall be replaced in kind. Each unit has twelve coolers, 6 up and 6 down." Where as in price schedule, file "B.08.02+W9127S21R00 01", line item no. 0060 (page no. 4) and 0113 (page no.6), 16 qty. specified for this item. It should be 12. Please clarify.

On: Oct 08 2021.

Government Response. . Quantity 16 accounts for spare cooling coils to be provided. 22 00 00.00 26 2.7.1 will be amended to clarify spares quantities as 2 up and 2 down coils in an upcoming amendment. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443081 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 13 13.02 26, par. 3.7.3 : Does the government furnish the existing rotor pedestal to contractor to mount the generator rotor during execution of work?

On: Oct 08 2021.

Government Response. . The existing rotor pedestal is available to the contractor for execution of work. The contractor will need to inspect the pedestal before use. On: Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443083 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.06 26, par. 3.3.1 : In this clause it is specified that "For two-piece (split) thrust runners, perform the inspections from the list below that are possible without splitting. If directed by the Government, split the runner and conduct the remainder of the inspections." where as clause 3.1.1 states that "Phase 2 inspections may, at the Contractor's discretion, be performed off site at the Contractor's refurbishment facility." If contractor opts this option, splitting is required to dismantle the thrust and guide runner from generator shaft and all inspections shall be performed in splitting condition only. Please clarify. Accordingly, please review price schedule line item 0139AA & 0139AB and 0166AA & 0166AB.

On: Oct 08 2021.

Government Response. . Paragraph 3.3.1 will be revised to read as follows: "Phase 2 inspections may, at the Contractor's discretion, be performed off site at the Contractor's refurbishment facility." On: Nov 08 2021

Current Request Status: Request Closed

W9127S21R0001

9443093 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 01 22 00.00 10 : Items 0155 and 0182 are optional items for the injection of voids in the draft tube liner. 1.6.30.2 states that the measurement will be on a per unit basis but 1.6.30.3 states that the unit of measure is per gallon. However, neither of these units of measurement captures the level of work required. The drilling and injection of voids is a procedure that involves the preparation of procedures for the work, mapping, drilling, tapping, epoxy anchors in addition to the epoxy itself.

Section 03 64 23.00 26 which provides the required instructions does not provide quantities related to each activity. Please provide details on the quantities of each of these activities: tapped holes, number of anchors, quantity of epoxy grout for which the proposals are to be based upon. Alternatively, these activities can be covered by the most appropriate time and material CLIN. Please note that mapping should be part of the base works to determine the actual works that will be required.

On: Oct 08 2021.

Government Response. . The activities associated with epoxy injection should be covered under the most appropriate CLIN. This would include the drilling and tapping, etc. This will be updated in paragraph 1.1 of section 03 64 26.00 26 in an upcoming amendment. On: Nov 18 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9443096 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 05 50 03.20 26 states that the supplier shall design and fabricate new mounts in the draft tube for the existing draft tube maintenance platform. However, no information on the number and shape of the mounts is provided. Please provide more information on these mounts as well as a drawing of the existing turbine maintenance platform.

On: Oct 08 2021.

Government Response. . The requirement to provide mounts for the government's maintenance platform will be removed in an upcoming amendment. On:

Oct 25 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9446157 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 16.00 26, par. 3.12 : It is specified that "The existing stator winding shall be removed by a third party. This includes all wedges, coils, connectors, RTDs, and circuit rings from the neutral connection to the main leads. A third party will abate all asbestos from the generator stator as part of this work." Please inform us the time duration for this activity (winding removal) we have to consider in the schedule.

On: Oct 12 2021.

Government Response. . 45 days will be allowed for this activity. The specification section will be updated to address this in an upcoming amendment. On:

Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9446160 Hydropower W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

Section 48 13 13.06 26, par. 1.1.2 : It is specified that "a. The thrust bearing consists of a split guide runner and a split thrust runner. Both of these are attached to the generator shaft." While reviewing the drawings we observed a discrepancy. The drawing FIO-028 (13-A-1398) & FIO-064 (22-A-6084) show what specification says, where as drawing FIO-060 (17-B-9125), FIO-066 (23-A-4274)& FIO-074 (23-A-8455) show that the guide runner is an integral part of the generator shaft and split thrust runner is attached to the generator shaft. Please confirm the configuration ?

On: Oct 12 2021.

Government Response. . The Government can not currently verify which configuration is installed in each unit. On: Oct 28 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9446361 Hydropower 1.5.14 48 13 13.01 26

Comment Classification: Controlled Unclassified Information (CUI)

48 13 13.00 26 – 1.5.14: "The turbine inlet (high pressure) measurement section must be located at the same location as the prototype and correspond to the inlet measurement section as specified by IEC 60193. Inlet static pressure must be measured at four or six pressure taps."; however;

48 13 13.01 26 – 1.1.1: "After the original construction, a modification was done to the bottom of the penstock to scroll case transition. A profiled concrete filler was poured at the bottom of the penstock, downstream of the elbow. It is assumed that this was done in order to improve the hydraulics. The concrete filler effectively decreased the overall wetted perimeter in this area. Contractor should be aware of this modification and implement it into the design of new turbine runner. Original documentation regarding this modification will be attached at the end of this section in Appendix A - FORMS AND ATTACHMENTS."

Please confirm the following understandings:

- The position of the piezometers is indicated on drawing 10006-MM-1 (scroll case plan). Therefore, this must be the inlet (high pressure) measurement section for the model test.

- The penstock doesn't have to be included on model water passages for testing, since quality of the flow due to the filler can be assessed by CFD.

On: Oct 12 2021.

Government Response. . Confirmed both points. On: Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9446367 Hydropower 1.5.2 48 13 13.01 26

Comment Classification: Controlled Unclassified Information (CUI)

43 13 13.01 26 - 1.5.2 "Turbine weighted efficiency must be confirmed by model test and prototype tests. The predicted prototype efficiencies must be evaluated as part of the economic evaluation, see SECTION 00115 and 00130."

- Please provide SECTION 00115 and SECTION 00130, including liquidated damages for efficiency, power output and cavitation.

- Will the same liquidated damages be applied for both aerating and non-aerating modes?

- Is there any specific liquidated damage and/or penalty to be applied on DO uptake?

On: Oct 12 2021.

Government Response. . The performance guarantees will be provided for the turbine weighted efficiency, turbine maximum power, and turbine cavitation guarantee in section 48 13 13.01 26.

The turbine performance guarantees (efficiency and max power) will only apply during non-aerating operation.

W9127S21R0001

There will be no liquidated damages applied to the DO target requirement. The Government may choose to invoke performance guarantees under the warranty clause or reject the turbine runner if guarantee DO does not meet the performance criteria of the specification. On: Nov 24 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9446410 Hydropower 1.6.1 48 13 13.01 26

Comment Classification: Controlled Unclassified Information (CUI)

Has any previous work on DO uptake been done at Norfork plant in the past? If so, are the results available for the contractor?

On: Oct 12 2021.

Government Response. . Known previous dissolved oxygen reports will be provided in an upcoming amendment. On: Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9446413 Hydropower 1.6.3 48 13 13.01 26

Comment Classification: Controlled Unclassified Information (CUI)

"For the purposes of estimating prototype aeration performance parameters, assume the water temperature is between 49.8 to 61.5 degrees F (this is based on the historic highest and lowest temperatures during the lowest dissolved oxygen month)."

Could the government confirm the range of water temperatures for estimating the aeration performance parameters? This seems to be on the low side of the spectrum in which thermal stratification and depletion of oxygen at the lower levels of the reservoir occurs.

On: Oct 12 2021.

Government Response. . The specification section will be updated to include the current temperature range from the tailwater reading station, which shows 43.3-72.9 degrees F. On: Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9446968 Specifications W9127S21R0001 Time Extension W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

We found significant changes been made in the final solicitation since the draft RFI has been published in May 2021. Also, there will be only a week after site visit for questions submission time and only about 4 weeks for final bid. For us to evaluate all changes, we request 4 weeks extension to submit questions from October 21st and 6 weeks extension from November 17 to final bid submission.

On: Oct 13 2021.

Government Response. . Please refer to Solicitation Amendment 0002 for new proposal submission deadline. On: Nov 15 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9447799 Specifications W9127S21R0001 Asbestos W9127S21R0001

Comment Classification: Controlled Unclassified Information (CUI)

The specification requirements are conflicting in handling and abatement of ACM. Section 01 11 10.00 26 para. 1.1.1, Section 01 22 00.00 10 para. 1.1.16.1 and Section 48 13 13.02 26 para. 3.6.14 contradict each other. This contractor humbly request section 01 11 10.00 26 para. 1.1.1 is removed in its entirety and Section 01 22 00.00 10 para. 1.1.16.1 is modified. We request that ACM work is done per Section 48 13 13.02 26 para. 3.6.14 as many other USACE works with similar scope are done. For further clarity, we would propose that a statement that explicitly states that no asbestos handling or abatement will be required of the Prime Contractor.

On: Oct 13 2021.

Government Response. . Asbestos abatement will be handled by a third party and will be removed from the scope of this contract. This will be addressed in an upcoming amendment. On: Nov 08 2021

Current Request Status: Request Closed

Information for this report is procurement sensitive.

9448444 Hydropower 33 of 86 Factor 4 - Schedule 00 22 16

Comment Classification: Controlled Unclassified Information (CUI)

Could the Government provide an anticipated date of award for Proposal Schedule preparation purpose?

On: Oct 14…