Addendum #2 T Lake Major Water Supply Plant New Standby Power System

Transcription

1 Date: May 23, 207 Addendum #2 T Lake Major Water Supply Plant New Standby Power System To All Bidders of T22.207: Please note: the following addendum applies to T and shall be taken into consideration when preparing bid documents. Question : The precast Cable Trench specified Ulticon precast trench model# UW4772TR cannot be sourced. Please provide a local supplier or an approved alternate. Answer :. Drawing E-000, Section J: Replace the text ULTICON PRECAST TRENCH MODEL UW4772TR with text UTILICON PRECAST TRENCH MODEL# UW4772TR. 2. UTILICON PRECAST TRENCH MODEL# UW4772TR is available. 3. The pre-cast trench will be provided by the cable bus manufacturer. It is necessary that the cable bus manufacturer design and provide the pre-cast trench to ensure that the cable size and ampacity rating is correct. The contractor shall supply and install the complete cable bus systems, including pre-cast trenches. The complete cable bus systems, including pre-cast trenches, shall be designed and provided by the cable bus manufacturer. Question 2: Since Halifax Water has already issued a Tender for the Generator sets and has awarded this contract to Atlantic Tractor and Equipment. We request that an allowance for the Generator Sets be provided by Halifax Water. Answer 2: No allowance will be provided on the tender form. Question 3: Please provide a civil drawing showing existing and proposed elevations or the generator pads, switchgear building and electrical trough Answer 3: In section Tender Form Project Documents, add drawing attached with this addendum Lake Major Water Supply Plant New Standby Power System Proposed Grading Plan HW #039 to the drawing list. Brent Hickman, S.C.M.P., Procurement Officer Halifax Water Tel: (902) Fax: (902) procurement@halifaxwater.ca

2 ALL OTHER SPECIFICATIONS, TERMS AND CONDITIONS REMAIN UNCHANGED. Acknowledgement by Bidder: Company Name: Print Name: Signed: Date: End of Addendum #2

3

4 Date: May 7th, 207 Addendum # T Lake Major Water Supply Plant New Standby Power System To All Bidders of T22.207: Please note: the following addendum applies to T and shall be taken into consideration when preparing bid documents. Section Page Article A-The Work Remove Jonathan MacDonald, Project Engineer and replace with Jason Naugler, P.Eng -Strum Consulting Section Page 7 In section General Requirements under SUMMARY OF WORK, Subsection 2., remove wording This project includes the replacement of water main and reconnecting existing water services. Response to questions and clarifications requested: Question :. Request for Proposal #P4.206 Tender for supply of switchgear calls for the successful bidder to include delivery of equipment SPECIFICATION MAY, 206 B SECTION B TECHNICAL REQUIREMENTS. SCOPE OF WORK. Design, manufacture, test, deliver DDP site, and off-load at job site, and provide a written guarantee for one (), 600 V, 3200 A, 3 phase, 3 wire, indoor, metal enclosed switchgear assembly complete with associated protection, control and metering equipment, accessories and special tools. Yet in Tender T22207 it also calls for the contractor to arrange and pay for delivery of the switchgear..2 Contractor Responsibilities:. Designate submittals and delivery date for each product in progress schedule..2 Review shop drawings, product data, samples, and other submittals. Submit to Engineer notification of observed discrepancies or problems anticipated due to non-conformance with Contract Documents..3 Arrange and pay for delivery to site..4 Receive and unload products at site..5 Inspect deliveries jointly with Owner; record shortages, and Brent Hickman, S.C.M.P., Procurement Officer Halifax Water Tel: (902) Fax: (902) procurement@halifaxwater.ca

5 damaged or defective items..6 Handle products at site, including uncrating and storage..7 Protect products from damage, and from exposure to elements. Please clarify which is correct? Answer : As per the Detailed Scope of Work in Section 0 00, the contractor shall be responsible for the paying the cost and coordinating the delivery of all equipment for the project, including the owner supplied switchgear assembly. For information concerning the switch gear, the bidders can contact Parmida Lajevardi, Project Manager with Powell (phone: , Parmida.Lajevardi@powellind.com). Question 2: 8 gauge roof cladding is only available in bare galvanized stock (galvalume and factory paint not available). The thickest gauge Vic West and most other manufacturers offer is 22 gauge. Will you accept 22 gauge? Appendix A Section 5.4 Roof and Ceiling states the exterior roof surface shall be a maintenance-free 8-gauge minimum galvanized steel, standing seam roof panel system with 3 height minimum interlocking ribs designed to be water-tight with minimal air infiltration and provide a 30-year minimum service life. Answer 2: The gauge of the steel can be 22 gauge and 24 gauge for sections and respectively providing that both still meet the 30 year minimum service life. Please note that the building foundation has been engineered, and therefore the building size should be based off this. Question 3: 8 gauge exterior wall cladding is only available in bare galvanized stock (galvalume and factory paint not available). The thickest gauge Vic West, and most other manufacturers, offer with interlocking ribs is 24 gauge. Will you accept 24 gauge? Appendix A Section 5.5 Walls states the exterior wall surface shall be a maintenance-free 8-gauge minimum galvanized steel, vertical rib wall panel system with interlocking ribs designed to be water-tight with minimal air infiltration and provide a 30- year minimum service life. The colour shall be one of the Vendor s standard colours to be selected by the Owner. Answer 3: The gauge of the steel can be 22 gauge and 24 gauge for sections and respectively providing that both still meet the 30 year minimum service life. Please note that the building foundation has been engineered, and therefore the building size should be based off this.

6 Question 4: As there is no specification for the Emergency Generator Quick Connect Switchboard then this item will be to Contractors Discretion? Answer 4: The specification for the Emergency Generator Quick Connect switchboard shall be as follows: Generator Quick Connect Switchboard 600V, 200A, 3P, 4W, CSA C22.2 No.3 approved, CSA Type enclosure, complete with 200AF/200AT/65kAIC rated N-Frame main circuit breaker, colour-coded Cam-type plug receptacles plus mechanical lugs for generator cable connections, Eaton Pow-R-Line C construction or approved equivalent. Attached with this addendum is a product brochure as information. A signed copy of each Addendum must also be included with the bid submission. Failure to include this Addendum may be cause for rejection. If you have any questions, please contact our office by at procurement@halifaxwater.ca. ALL OTHER SPECIFICATIONS, TERMS AND CONDITIONS REMAIN UNCHANGED. Acknowledgement by Bidder: Company Name: Print Name: Signed: Date: End of Addendum #

7 Low Voltage Switchboards and Switchgear Generator Connection Assemblies 6 Typical Generator Quick Connect Assembly External View Generator Quick Connect Switchboards Product Description The Eaton Generator Quick Connect Switchboard is an engineered assembly designed to allow safe and reliable connection of a mobile generator to the facility s electrical system. The Eaton Quick Connect includes Cam-type receptacles, standard mechanical lugs, a dedicated generator-service disconnect, and a manual key-interlock transfer scheme. The switchboard provides a quick and safe supply of emergency power to parts of the electrical power system that are not covered by the emergency power system; it can also back up existing generators. Loads connected to the Generator Quick Connect Switchboard can be safely transferred to an alternative power source. Internal View Application Description The Generator Quick Connect Switchboard can be applied in both new and retrofit applications. The switchboard supports all market segments and applications, such as: Commercial facilities Institutions and school boards Retail buildings Industrial facilities Residential facilities Health care facilities Wastewater treatment facilities Data centres Contents Description Page Generator Quick Connect Switchboards... Standards and Certifications... T6-36 Product Selection... T6-36 Technical Data and Specifications... T6-36 Dimensions... T6-36 Customer Service Termination Enclosure... T6-37 Roll-Up Generator Quick Connect Assembly... T6-39 Features, Benefits and Functions Reduced Downtime (Speed of Connection) The Generator Quick Connect Switchboard is ready for immediate connection. Once the Quick Connect Switchboard is installed: A permanent connection point for temporary mobile power is established No additional field modifications to the internal switchboard are required to connect the generator cables Modifications to the facility s physical structure to accommodate generator cables (e.g., drilling holes in walls) is not required No routing of cables through doorways, windows, hallways or staircases is required Safer and More Reliable Reduces the potential safety hazards associated with connecting the mobile generator to the facility s electrical system under lost power conditions Eliminates the safety hazards of generator cables lying in the path of customers or employees Reduced Emergency Costs The costs associated with temporarily connecting mobile generators, such as modifying switchboards, making physical modifications to buildings, and routing cables to connect the mobile generator, are eliminated or greatly reduced Low Voltage Switchboards and Switchgear CA05002EN August T6-35

8 Low Voltage Switchboards and Switchgear 6 Generator Connection Assemblies Decreased Utility Dependency The Quick Connect Switchboard allows the facility to switch between utility feed and generator feed, without relying on utility for disconnect service. Cam Lock Receptacles with Colour-Coded Generator Connections Bottom Flip-Up Cover for Easy Access to Incoming Lugs or Cam Lock Receptacles Standards and Certifications CSAT C22.2 No. 3 Product Selection Standard Generator Quick Connect Assembly Standard ratings available up to 2000A (80% rated) or 600A (00% rated) Detailed operating instructions mounted on front cover The Generator Service Disconnect is a CSA approved circuit breaker key interlocked with the service disconnect Accessories include ground fault, shunt trip, auxiliary contacts and alarms Colour-coded Cam-type plug receptacles for easy connection to generator Mechanical lugs are provided for alternate method of connecting generator cables Standard enclosure is CSA Type ; sprinklerproof, Type 2, 3R are optional Pow-R-Line CE construction similar to Eaton s standard switchboard Custom Generator Quick Connect Assembly Accommodates ratings greater than 600A (00% rated) or 2000A (80% rated); consult Eaton for more information Custom integration into switchboard lineups are available; consult Eaton for more information Technical Data and Specifications Generator Quick Connect kw Ratings (Rated up to 600V) a Ampere Rating b kw (Maximum) Rating c 80% Rated Generator Disconnect Breaker 00% Rated Generator Disconnect Breaker 600V 208V 600V 208V Generator Quick Connect Main Breaker Ratings Breaker Frame Maximum Ampere Rating Interrupting Rating (ka) 240V 600V N-Frame , 00 25, 35, 65 R-Frame , , 65 R-Frame 2000 (80% rated) 25, , 65 Generator Quick Connect Schematic Underground Conduit Inside Switchboard Building Wall Generator Quick Connnect Generator Cable Portable Generator Power Dimensions Approximate Dimensions in Inches (mm) Standard structures are inches (762.0 mm) deep, by inches (762.0 mm) wide by inches ( mm) high. CSA Type 3R enclosures are equipped with a 3.00-inch (330.0 mm) front structure extension. NNote a 50 kaic standard bus bracing. b Standard ratings up to 600A; for higher amperages, consult Eaton. c Calculated using the following: kw (max.) = [(V*A*.73*PF)/000]*(breaker rating) with PF (power factor) equaling 0.8. T6-36 Low Voltage Switchboards and Switchgear CA05002EN August 203