12) Response to Questions 4 - RFP MG 02122026.pdf

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Storage Ring (SR) Bipolar Power Converter (BPC)
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MG-02122026
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This is a Questions and Answers document for Lawrence Berkeley National Laboratory (LBNL) RFP MG-02122026, dated February 25, 2026, addressing contractor inquiries regarding assembly components and sourcing.

The document addresses two primary questions regarding common mode chokes for Assembly #LT-EL-SR-PS-CRR-6401-10. The first question clarified a discrepancy regarding part number #LT-EL-SR-PS-CRR-6401-54 (10A Choke, Common Mode), which was called out on the Parts and Component Assembly (PCA) #PL-LT-EL-SR-PS-CRR-6401-11_REV-D for items 43 and 44 but lacked a corresponding production drawing. LBNL confirmed that production drawings are available as reference attachments, including drawings for related chokes: #LT-EL-SR-PS-CRR-6201-55 (25A), #LT-EL-SR-PS-CRR-6203-56 (35A), and #LT-EL-SR-PS-CRR-6101-57 (70A). The second question inquired about supplier recommendations for these custom choke components. LBNL responded that these are custom components to be constructed by the contractor in accordance with each respective production drawing, with no pre-approved supplier identified.

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LBNL Response to Questions 04 Re: LBNL RFP MG-02122026 – 02/25/2026

1. Question on Assembly, #LT-EL-SR-PS-CRR-6401-10

Item 43 and 44 on PCA - #PL-LT-EL-SR-PS-CRR-6401-11_REV-D calls out #LT-EL- SR-PS-CRR-6401-54, Choke, Common Mode -10A, total quantity (2). (Shown below). It seems there is no drawing for that choke.

Can LBNL provide the #LT-EL-SR-PS-CRR-6401-54 drawing, or was that a mistake and was meant to be part #LT-EL-SR-PS-CRR-6201-55_REV-A, Choke, Common Mode, 25A?

The (3) other chokes called out on the other assemblies:

#LT-EL-SR-PS-CRR-6201-55, Choke, Common Mode, 25A #LT-EL-SR-PS-CRR-6203-56, Choke, Common Mode, 35A #LT-EL-SR-PS-CRR-6101-57, Choke, Common Mode, 70A

LBNL Response: For the production drawing for the LT-EL-SR-PS-CRR-6401-54, 10A Choke, see reference attachments.

1. LT-EL-SR-PS-CRR-6201-55, Choke, Common Mode, 25A (Reference Attachment)

2. LT-EL-SR-PS-CRR-6203-56, Choke, Common Mode, 35A (Reference Attachment)

3. LT-EL-SR-PS-CRR-6101-57, Choke, Common Mode, 70A (Reference Attachment)

2. Can LBNL provide a supplier for the Chokes?

From parts list PCA - #PL-LT-EL-SR-PS-CRR-6401-11_REV-D.

LBNL Response: These are custom components and are to be constructed by the supplier as per each print, respectively

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