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HomeMy WebLinkAboutADDENDA 1 - BID - 9919 PRE-PROCUREMENT OF ULTRAVIOLET SYSTEMAddendum # [RFP/BID # and Name] Page 1 of 2 ADDENDUM NO. 1 SPECIFICATIONS AND CONTRACT DOCUMENTS D escription of Bid 9919 Pre-Procurement of Ultraviolet Disinfection System OPENING DATE: 3:00 PM (Our Clock) January 16, 2023 To all prospective bidders under the specifications and contract documents described above, the following changes/additions are hereby made and detailed in the following sections of this addendum : 1.T he Due Date for Bid 9919 is extended to January 16, 2024 at 3:00 PM. 2.In the attached Exhibit, some of the responses by the City require additional information. That additional information is to be submitted with the Bid response. 3.Additional changes: •Added # ballasts in service on 'average day flow criteria' sheet. •Added sleeve replacement to 'Cost Summary' sheet. •Revised Total Lamp Power @ ADAF cell on 'Cost Summary' sheet to reference Power cell I9 on 'Average Day Flow Criteria' sheet. •Added Note (1) on 'Average Day Flow Criteria' sheet. 4. The Revised Bid Price Spreadsheet is issued separately on BidNet, as part of this addendum. Exhibit 1 – Questions and Answers Please contact Pat Johnson, CPPB, Senior Buyer at pjohnson@fcgov.com with any questions regarding this addendum. RECEIPT OF THIS ADDENDUM MUST BE ACKNOWLEDGED BY A WRITTEN STATEMENT ENCLOSED WITH THE BID STATING THAT THIS ADDENDUM HAS BEEN RECEIVED. Financial Services Purchasing Division 215 N. Mason St. 2nd Floor PO Box 580 Fort Collins, CO 80522 970.221.6775 970.221.6707 fcgov.com/purchasing Exhibit 1 Q1. Cost Summary Sheet – Cell G17 is pulling from the “non-prorated” ballast life of one year instead of the Guaranteed ballast life of 5 years. The calculation for Annual # Ballasts Replaced in cell E25 should use the guaranteed ballast life of 5 years. The way the calculation is set up, all ballasts in the system are replaced annually. A1. Ballast life in cell G17 revised calculation to reference guaranteed life (5 yr). Q2. Cost Summary Sheet – Cell E25, Annual # Ballasts Replaced is calculated using total installed ballasts and not total operational ballasts at average flow. The total installed ballasts includes the redundant ballasts that will not be operational. A2. Annual # ballasts replaced in cell E25 revised calculation to reference # ballasts in service on sheet "Average Day Flow Criteria", cell G9. Q3. Lamp sleeve information is requested on the Warranty Replacement Costs sheet, however, lamp sleeves are not utilized on the cost summary or 20 Yr LCCA sheets. Quarts sleeves should be factored into the 20 Yr LCCA. A3. Assumption is sleeves will be replaced at 20 yrs. Cost of one full batch of sleeve replacements added to 20 yr LCCA. Q4. Cost Summary Sheet – on line 25, all annual costs are rounded up to the nearest $1000. ie. $4,001 and $4,999 would be rounded up to $5,000 and result in the same annual amount. Over the 20 Yr LCCA this could amount to a significant difference. Should these be actual results and not rounded for a more accurate comparison. A4. Removed all rounding from 'Cost Summary' and '20 yr LCCA' sheets, except for final life cycle cost calculation in cell M33 on sheet '20 yr LCCA'. SECTION PARAGRAPH SPECIFICATION REQUIREMENT QUESTION RESPONSE 00300 11A. Bid Submittal – 11 A. Is the entered value here to actually be the 20 year life cycle cost or the Total Capital Cost from the bid Price Forms? If it is to be 20 year life cycle please confirm if this comes from the 20 Yr LCCA tab on the bid price forms, line item 33 The value that will be most used for cost evaluation is line 33 on the “20 Yr LCCA” tab. Other items will be evaluated to ensure a balanced and qualified bid are awarded. 46 66 53 2.4. And 3.6 D. Provide a theoretical electrical system harmonics study for the electrical distribution system including utility Will Generic UV3+ harmonic study be acceptable and/or is this in addition to the requirements of 3.6 D. Requirements of 3.3.D is in addition to 2.4. A generic UV3+ harmonic study is acceptable during submittal phase, but electrical acceptance tests are required to verify performance of installed components. 46 66 53 - 24 2.5 C.3.a HMI screens shall be developed per OWNER standards and as per specification Section 40 95 10 - PLC Based Control Systems Hardware. The SUPPLIER shall schedule a meeting with the OWNER to discuss graphic screen development prior to start of construction. Is it acceptable to use Trojan standard screens Supplier screens are generally acceptable. Contract equipment tagging shall be utilized. Sample screens shall be provided prior to graphics meeting with the owner for review/discussion for final approval. 46 66 53 - 24 2.5 C.3.a Screens shall be developed utilizing Schneider Ecostruxture Software. Trojan Modicon HMI programs use Vijeo desiger v6.2. Is this acceptable? No exception to the HMI software is allowed. 46 66 53 - 26 2.5 C.5.b.9 High temperature Please confirm what this is monitoring - Custom programming will be required This is in reference to PDC high temperature. 46 66 53 - 29 2.5.F.2.b UVT probe shall be model IQ UVT- 254 by YSI Incorporated. Are either Trojan standard options acceptable : Real Tech Inc.UV254 P200 UVT meter or HACH SC4500 UVT-254 for Online UVT. No OR EQUAL UVT instruments shall be considered. 46 66 53 - 33 3.6.A. The OWNER shall be given 45 calendar days notice prior to testing and the SUPPLIER shall provide and coordinate all travel accommodations for the Factory Testing Is the UV manufacturer responsible for the owners travel expenses. If so , this section does not indicate how many representatives will be attending. Please clarify. Owner will be responsible for their own travel expenses. However, Vendor should be ready for up to Six (6) representatives for any conference room or other on-site accommodations. 46 66 53 3.6.C.2 Laboratory analyses will be performed by the OWNER. All laboratory test results shall be submitted by the OWNER and forwarded to the SUPPLIER. Will Owner or Supplier cover cost of equipment and lab expenses? Owner will cover the cost of laboratory testing in their own lab. 40 92 00 - 3 2.2.A.1 Panel section faces shall be No. 10 gauge minimum thickness for free standing panels Our standard for free standing panel is 12 gauge. Is this acceptable? Provide a price deduct option for substituting 12 gauge in lieu of 10 gauge. 40 92 00 - 7 2.2.H.12.d A 15 amp, 2 pole circuit breaker shall be provided in each branch circuit. Trojan use single pole breaker for single phase power source. Is this acceptable? Yes , paragraph 2.2.H.12.d indicates single pole 15 amp breaker. Page 1 of 3 0BPg 1BSpec Reference 2BSpec Comments 3BResponse 92 26 00 00 Please allow for at least 8 weeks to provide submittal documents. No exceptions allowed . 123 26 35 26 1.1.A We take exception as proposed system will be IEEE519 compliant without the active filter. Installation shall meet the requirements of IEEE519 for THD. Certificate of compliance shall be provided. 139 40 91 00 1.2.D.3 &4 Please allow for the loop drawings to be submitted after the drawings and schematics are approved in order to capture any changes. Yes. This is fine. 158 40 91 06 2.1.A-C Please consider our standard, Endress & Hauser FTW31, as an approved equal. Per P&ID, continuous level measurement is required on each channel. FTW31 is acceptable for level switches, but shall not replace continuous level measurement . 165 40 92 00 2.1.H We take exception our discrete outputs are 24VDC. Discrete outputs from the control panel shall be provided by elec trically isolated contacts rated for 5 amps at 120 VA C. 165 40 92 00 2.1.K We will be supplying our standard Rittal cabinets with our standard outer coating with no coatings on the inside. Outer coating shall be in accordance with this section. Provide details to the WEDECO s tandard outer coating if a variance is requested for review. 165 40 92 00 2.2 A thru I We will be supplying our standard Rittal cabinets and components and our standard wiring methods. Control panel shall mee t the requirements of this section. Provide detailed exceptions where the installation doesn’t meet the requirements for re view. 170 40 92 00 2.3 We will be supplying will be supplying our standard Rittal cabinets. Control panel shall mee t the requirements of this section. Provide detailed exceptions where the installation doesn’t meet the requirements for re view. Specification Review Project: City of Fort Collins - Mulberry 2 0BPg 1BSpec Reference 2BSpec Comments 3BResponse 172 40 92 00 3.2.E We will be supplying will be supplying our standard Rittal cabinets. Manufacturer to ensure labels will be durable and have good longevity 174 40 95 10 1.3 Wire labels are not adhesive labels and we don’t provide a portable label marker “Brady, BMP 41 Model”. A single submittal for the PLC control panel (control panel, plc and supporting hardware) is acceptable 182 40 95 10 2.6.C Please confirm if a separate submittal is required just for the PLC, the schematics will need to be accepted and full PLC program completed. Please allow for 4-5 months. Generally structured text is not allowed. Please provide an explanation of why it is necessary. 186 40 95 10 3.5.A We take exception. We use ladder mainly throughout the program but need to use structured text for some items. Summary description of multiple rungs is acceptable . 239 46 66 53 2.2.A.1 We take exception for each rung having a description. We use ladder mainly throughout the program but need to use structured text for some items. Desig n intent is to have two banks per cabinet with a redundant channel (if one cabinet goes down, the second channel provides disinfection). With a redundant bank per channel, there would need to be two cabinets per channel and both channels running if a cabinet goes down, which deviates from design intent . Please describe the imp acts of maintaining a redundant channel instead of redundant bank per channel. 242 46 66 53 2.3.A.4.g Please consider returning to previous allowance of “redundant bank per channel at peak during the peak flow of 6 MGD and at a UVT of 65% while delivering a dose of 30 mJ/cm2”. No exceptio ns allowed . 243 46 66 53 2.3.A.6.b Please allow for maximum option without flow is 60 min. No exceptions allowed . 243 46 66 53 2.3.A.7 .d/g We take exception. Our banks are not rated for complete submerg ence and are not Type 6P . Noted. Please provide a description of what would happen if the water level in the UV c hannel overtopped the banks, and what repairs might be req uired. 3 0BPg 1BSpec Reference 2BSpec Comments 3BResponse 251 46 66 53 2.3.J.5.a Please consider our standard 304SS . Assuming this spec reference was meant to be 2.3.K.5.a (junction box). See Exhibit A Price Forms, Pirce Schedule tab, row 48 –304S S acceptable as offering with price deduct . 252 46 66 53 2.4.5 Please allow for submission after submittal as the harmonic s tudy is dependent on the schematics and other s ubmittal documents. No exceptions allowed.