MODIFICATION
66 -- Power Supply Controller Chassis Assemblies
- Notice Date
- 11/23/2010
- Notice Type
- Modification/Amendment
- NAICS
- 339999
— All Other Miscellaneous Manufacturing
- Contracting Office
- Department of Energy, Brookhaven National Laboratory (DOE Contractor), Brookhaven, PO Box 5000, Bldg. No. 355, Upton, New York, 11973
- ZIP Code
- 11973
- Solicitation Number
- RC182926
- Archive Date
- 12/15/2010
- Point of Contact
- Roseann Callister, Phone: 631-344-3142
- E-Mail Address
-
roseann@bnl.gov
(roseann@bnl.gov)
- Small Business Set-Aside
- N/A
- Description
- There have been technical and contractual issues posed in reference to the above solicitation. They are summarized below. Please bid in accordance with these clarifications/changes. Question 1: Can the delivery date of first article be modified to specify a reasonable 6-8 week lead time after notification of award? BSA Response: The delivery date of first articles (Item 1) is hereby changed from December 31, 2010 to January 31, 2011. This allows extra 31 days. In addition, first article acceptance testing is hereby reduced from 30 days to seven (7) days. It is expected that first article acceptance would take place within five (5) to seven (7) business days after receipt at Brookhaven. Production schedule for Item 2 is hereby changed to begin April 1, 2011, with scheduled deliveries as follows: 25 each by 4/1/2011; 27 each by 6/1/2011; 25 each by 8/1/2011; and 25 each by 9/30/2011. Question 2: Section 4.6 Test and Inspection Procedures: of Supplier Quality Assurance Requirements BNL-QA-101, time line of 60 days specified cannot be met due to delivery requirements inside of time line. BSA Response : Test and Inspection Procedures time is hereby changed to 14 days in lieu of the stated of 60 days. Question 3: In reference to Specification Section 4.6.3 Noise and Ripple: The industry norm for systems and industry specified noise standard for VME and compact PCI systems for 5V is 50 mVp-p (DC to 20 MHz). The 3mVrms (DC to 2 MHz) is well outside the norm and will be difficult to meet. Methodology and setups for measurement of ripple and noise are not standardized and therefore there is no real way to correlate one manufacturer's specification to another's. Can the Noise and Ripple spec ifications be changed to the industry standard of 50mV p-p, so that standard off-the-shelf power supplies can be used? BSA Response: Section 4.6.3 Noise and Ripple of 50 mVp-p (DC to 20 MHz) is acceptable, and 10 mVrms (DC to 20 MHz) is also applied. Question 4: In reference to Specification Section 4.6.4 Overvoltage Crowbar protection: can the Overvoltage Crowbar protection specification be specified in tolerance rather than specific values? BSA Response: Overvoltage crowbar is 125% with tolerance of +/-10%. Question 5: In reference to Specification Section 4.10, DC Cablings Inside the Chassis: Can section 4.10 DC Cabling allow OR'ing of power supplies for redundant power? BSA Response: Section 4.10 specifies the power cabling requirements. The redundant power supplies are treated as one unit and not two individual power supplies that "ORed" together. The supplier is responsible to connect the redundant power supplies to the backplane to meet the voltage and current specifications. THE FOLLOWING TECHNICAL QUESTIONS REFER TO THE PSC CHASSIS BACKPLANE: Question 5: T he tolerance of the finished board thickness: +/-0.012 inch is too strict for us to control. May we suggest relaxing the tolerance to +/- 0.025 inch? BSA Response: +/-.025 is acceptable Question 6: The min TIN/LEAD thickness is 50 mil and is too strict for us to control. We suggest changing the min TIN/LEAD thickness to 30 mil. BSA Response: The finish can be changed to IMMERSION NICKEL/GOLD 200-400 MICROINCHES ELECTROLESS NICKEL UNDER 4 MICRO MIN IMMERSION GOLD. Question 7: The min trace is 4.2 mil; however, in the original Gerber it is 4 mil. Which number should we go by? BSA Response : Follow the Gerber to build. Question 8: UL Logo and date should be added in the area indicated in the silkscreen on the component side; however, we cannot find the area. Please provide desired location. BSA Response: Marking note will change to......"ON THE COMPONENT SIDE IN AN UNOBSTRUCTED AREA." Question 8: There are some non-plated holes (106mil) with 0.24mm annular ring, and there are no solder mask openings on the top side; we don't know whether they are plated hole or not. BSA Response : The holes indicated are not plated and do not have solder mask reliefs - No change, leave as is. EXCEPT AS MODIFIED ABOVE, ALL OTHER TERMS AND CONDITIONS REMAIN THE SAME FOR RFQ PACKAGE 182926. BID DUE DATE REMAINS 11/30/2010. KINDLY CONFIRM RECEIPT OF THESE CLARIFICATIONS.
- Web Link
-
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- Record
- SN02332643-W 20101125/101123234302-4f029896bd1f5887adb4d132153cd548 (fbodaily.com)
- Source
-
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