P732 PPI (35-156) Amendment 0005.xlsx
XLSX spreadsheet 32 KB Posted
- Solicitation number
- N6247026R0015
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This file is a Pre-Proposal Inquiries (PPI) submission form and responses for SOLICITATION N62470-26-R-0015, a Military Construction (MILCON) Design-Bid-Build project for Electrical Distribution System Upgrades at Norfolk Naval Shipyard (NNSY) in Portsmouth, Virginia, specifically focused on the Gosport Substation. The document contains 156 numbered questions and answers addressing clarifications on project scope, technical specifications, drawings, and contract requirements. Key inquiry themes include hazardous materials handling, demolition responsibilities between the contractor and Dominion Energy, foundation and existing equipment documentation, waste disposal procedures, seismic design standards for the switchgear building, materials specifications (particularly stainless steel vs. galvanized steel), coastal environment protective coatings meeting ASTM B117 salt spray resistance standards, roof slope requirements, UL certification protocols, IEEE and ASCE standards compliance, heating/ventilation/air conditioning (HVAC) seismic bracing, door specifications, electrical component testing, and coordination with existing utility infrastructure. The responses consistently direct contractors to proposed drawings, specifications appendices, and means-and-methods discretion, while establishing clear boundaries that Dominion Energy remains responsible for demolition of Dominion-owned equipment and the contractor is responsible for work depicted in the drawings and specifications.
Critical technical requirements clarified include: the 38kV switchgear building must meet ASCE 7-16 Seismic Design Category C with a single-slope roof design (1-inch to 12-inch minimum slope), 304L stainless steel wall panels with 0.50-inch minimum thickness, hot-dipped galvanized and coated base frames, polyvinylidene fluoride paint finishes achieving 1500-hour ASTM B117 salt spray resistance, and UL Building Inspection services with third-party certification. The responses also address manhole placement, microtunnel construction coordination, cable vault design, surge arrester ratings (30kV Station Class per specifications), and integration with the Combined Heat and Power plant. Amendment 0005 extended the proposal due date and revised multiple contract conditions, specifications, drawings, and the liquidated damages clause. Bidders are instructed to submit specifications requests and all PPIs to the Contract Specialist, Daniel Rocha, at daniel.r.rocha2.civ@us.navy.mil, with the Department of the Navy Naval Facilities Engineering Command (NAVFAC) serving as the federal agency.
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PPI Submission Form Pre-Proposal Inquiries for SOLICITATION N62470-26-R-0015 Military Construction Project (MILCON) P732 Design-Bid-Build, Electrical Distribution System Upgrades (Gosport Substation Only) at Norfolk Naval Shipyard (NNSY) in Portsmouth, Virginia.
| PPI # | Question | Answers | |
| 35 | Please confirm if there are any hazardous or contaminated materials expected to be encountered within the existing de-energized brick substation control building. | All confirmed HAZMAT are shown on H-series drawings. Contractor would respond to discovery of contamination or hazardous materials/waste per 01 57 19.00 22-3.10.5.10. | |
| 36 | In addition to the provided drawing package 1827988 dwg 2of6_civil 1of2, DEMOLITION AND EROSION CONTROL PLAN - AREA 101-105, can existing drawing packages be provided for the existing de-energized substation? | Refer to Specification Appendix A5 as referenced from Specification Section 00 01 15-1.3.1. | |
| 37 | In addition to the provided drawing package 1827988 dwg 2of6_civil 1of2, DEMOLITION AND EROSION CONTROL PLAN - AREA 101-105, can existing drawing packages be provided for the existing energized Dominion substation? | Dominion is responsible for demolition of existing Dominion-owned equipment. Contractor is responsible for work depicted on the Drawings and Specifications. | |
| 38 | In addition to the provided drawing package 1827988 dwg 2of6_civil 1of2, DEMOLITION AND EROSION CONTROL PLAN - AREA 101-105, can existing foundation details be provided for foundations set to be demolished as noted in the Key Notes on CD101 & CD102? | Refer to Specification Appendix A5 as referenced from Specification Section 00 01 15-1.3.1. | |
| 39 | Please confirm if removed concrete, rebar and asphalt can be lost onsite or nearby to site. While at the site visit, a large pile of removed concrete and rebar was located nearby. Can this location be used for concrete/rebar/asphalt disposal? (Approximate Location: 36°48'30.71"N, 76°18'5.30"W) | Contractor must prepare a Demolition and Deconstruction Plan and Construction Waste Management Plans for approval by Contracting Officer/Installation Environmental program. Refer to the requirements of Section 02 41 00.00 22-Part 1. | |
| 40 | Will Dominion or NAVFAC perform demolition of any kind on this project, and can this scope please be provided? | Dominion is responsible for demolition of existing Dominion-owned equipment. Contractor is responsible for work depicted on the Drawings and Specifications. | |
| 41 | Will contractor be responsible to dispose of existing substation equipment? | Contractor is responsible for work depicted on the Drawings and Specifications. | |
| 42 | Will NAVFAC or Dominion keep any of the removed equipment as part of an investment recovery effort? | Dominion is responsible for demolition of existing Dominion-owned equipment. Contractor is responsible for work depicted on the Drawings and Specifications. | |
| 43 | Will contractor be responsible for testing and disposal of any existing equipment oil, such as within circuit breakers or transformers? | Contractor is responsible for sampling and testing of materials that could potentially contain PCBs, including equipment oil as required in Section 02 41 00.00 22-1.2.2. | |
| 44 | Will NAVFAC or Dominion supply dumpsters for structural steel disposal? | Contractor is responsible for work depicted on the Drawings and Specifications. Provide dumpsters in accordance with Section 01 57 19.00 22-3.16. | |
| 45 | Have the circuit breakers and other oil filled within the existing de-energized switching station been drained of oil? | No action has been taken by the government to remove oil from the existing switch station. | |
| 46 | Please further define contractors scope as it applies to the Combined Heat & Power (CHP) plant? | Contractor is responsible for work depicted on the Drawings and Specifications. | |
| 47 | What equipment, if any, will be recovered by Dominion or NAVFAC? | Dominion is responsible for demolition of existing Dominion-owned equipment. Contractor is responsible for work depicted on the Drawings and Specifications. | |
| 48 | Please confirm auxiliary transformers associated with the existing Gosport tie station are a part of the Gosport demolition scope, as seen on dwg CD102 Key Note 6. | Dominion is responsible for demolition of existing Dominion-owned equipment. Contractor is responsible for demolition of building referenced in on CD102, keynote 6 including any auxiliaries within the building. | |
| 49 | In addition to the provided 1827988 dwg 5of6_elec 1of2, can existing physical drawings please be provided for the existing energized Dominion substation control house be provided? | Refer to Specification Appendix A5 as referenced from Specification Section 00 01 15-1.3.1. | |
| 50 | In addition to the provided 1827988 dwg 5of6_elec 1of2, can existing P&C drawings please be provided for the existing energized Dominion substation control house be provided? | Refer to Specification Appendix A5 as referenced from Specification Section 00 01 15-1.3.1. | |
| 51 | In addition to the provided 1827988 dwg 5of6_elec 1of2, can existing physical drawings please be provided for the existing de-energized brick substation control house be provided? | Refer to Specification Appendix A5 as referenced from Specification Section 00 01 15-1.3.1. | |
| 52 | In addition to the provided 1827988 dwg 5of6_elec 1of2, can existing P&C drawings please be provided for the existing de-energized brick substation control house be provided? | Refer to Specification Appendix A5 as referenced from Specification Section 00 01 15-1.3.1. | |
| 53 | In addition to the provided 1827988 dwg 5of6_elec 1of2, can existing P&C drawings please be provided for the existing Gosport tie station be provided? | Refer to Specification Appendix A1 as referenced from Specification Section 00 01 15-1.3.1. | |
| 54 | Specification Section 26 13 14 Sub-clause 1.3..3 References ASCE 7-16 and mentions Seismic values for this building. The building is to be elevated on a foundation with a cable vault on | ||
| contract drawing A-301. Please supply a Geotechnical Report for the building site. | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | ||
| 55 | Specification Section 26 13 14 Sub-clause 1.7.11 mentions a UL or 1EEE C37.20.2A rain test. A given manufacturer has a certified rain test report for a sample building or can perform an IEEE.C37 20.2A rain test after the building has been completed assembled at the job site. Please advise as to which method is acceptable? | Where optional approaches are specified in the solicitation, offeror may use discretion. | |
| 56 | Specification Section 26 13 l4 in Sub-clause 1.9.2.2 requires a verification process. The building will be manufactured at manufacturer's location(s) based upon approved design drawings. Please explain the intent or this verification process. | It is in the Government's interest to verify products and services meet requirements prior to acceptance. | |
| 57 | |||
| Specification Section 26 13 14 Sub-clause 3.5. Foundation for Equipment and Assemblies. Will the manufacturer be given a copy of the design and calculations of the foundation? | Plans and specifications are available to the prime, subcontractors, and vendors in the solicitation. | ||
| 58 | Specification Section 26 13 13 Sub-clauses 3.6 and 3.7 for Special Testing and Inspection of | ||
| Seismic-Resisting Components, Supports, and Attachments. Is the Contractor responsible for the requirements listed in these sub-clauses? | Offers shall perform in accordance with provided plans and specifications. | ||
| 59 | The instructions above Box 7 indicate that box 7 is to be completed for construction projects and box 8 is completed for design projects. Please clarify that Box 7 and 8 are required for Construction Projects. | Propose according to the solicitation. | |
| 60 | The solicitation states that "Projects may be viewed more favorably when performed by the Offeror rather than those submitted for subcontractors" and that "Proposals demonstrating experience in self-performing relevant features of work may be considered more favorably than those that do not | ||
| demonstrate self-performance". Please confirm that if an affiliate company of the offeror self performs relevant features of work, it would also be considered more favorably? | See response to PPI#23 in amendment 2; Self-performance is by the business entity submitting the proposal. | ||
| 61 | Is the contractor expected to perform additional survey for underground existing utilities? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. Question is within offerors means and methods, including risk mitigation strategy. | |
| 62 | Should the contractor include a lump sum cost for rock excavation with assumes quantities (CY) or should a unit price be included with the proposal for rock excavation per cubic yard? | A bid schedule is provided; Propose in accordance with the solicitation. | |
| 63 | Will contractor be able to source power onsite for temporary construction facilities or is it anticipated that generators will be used for the duration of construction? | Connection to temporary services or generators is within means and methods of offeror's proposed solution; Propose in accordance with the solicitation. | |
| 64 | Factor 3 instructs offerors to base the schedule on a contract duration of 2190 days. We believe this project can be completed within a shorter duration. Please confirm that we are permitted to submit a schedule based on our actual duration estimates, or if we must inflate the schedule to meet the stated contract duration of 2190 days? | Schedule management is a technical selection factor as noted in the solicitation. Construction duration is within the discretion of the offerors means and methods. | |
| 65 | Based on feedback from switchgear vendors regarding current market lead times and technical requirements, an additional four (4) weeks would need to be added to the current Propose submission deadline in order to properly price the project. Please consider adding 4 weeks to the project Propose submission deadline. | See Amendment detail. | |
| 66 | Can photos of all existing equipment and their nameplates be provided for the existing de-energized substation? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 67 | Can photos of all existing equipment and their nameplates be provided for the existing energized Dominion substation? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 68 | Can photos of all existing structural steel be provided for existing de-energized substation? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 69 | Can photos of all existing structural steel be provided for existing energized Dominion substation? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 70 | Can photos of entire cable tray raceway systems within the existing energized Dominion substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 71 | Can photos of entire cable tray raceway systems within the existing de-energized brick substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 72 | Can photos of entire cable tray raceway systems within existing Gosport tie station be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 73 | Can photos of every relay system within the existing energized Dominion substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 74 | Can photos of every relay system within the within the existing de-energized brick substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 75 | Can photos of existing battery system within the existing energized Dominion substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 76 | Can photos of existing battery system within the existing de-energized brick substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 77 | Can photos of receiving pits be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 78 | Can photos of sending pits be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 79 | Can photos of existing above ground duct banks and concrete encased feeder risers be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 80 | Can photos of all four inside walls of the control house within the existing energized Dominion substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 81 | Can photos of all four inside walls of the control house within the existing de-energized brick substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 82 | Can photos of all four inside walls of the control house within existing Gosport tie station be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 83 | Can photos of Dominion complimentary work please be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 84 | Can photos of existing Gosport switchgear nameplates please be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 85 | Can photos of existing Gosport switchgear please be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 86 | Can photos of pedestrian bridge be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 87 | Can photos of pedestrian bridge gates be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 88 | Can photos of train tracks over approximate microtunnel location be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 89 | Can photos of access roads please be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 90 | Can photos of fire hydrants in the site proximity please be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 91 | Can photos of existing CHP parking lot please be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 92 | Can photos of all protected light poles within the CHP parking lot be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 93 | Please confirm if there are any hazardous or contaminated materials expected to be encountered within the existing de-energized brick substation control building. | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 94 | In addition to the provided drawing package 1827988 dwg 2of6_civil 1of2, DEMOLITION AND EROSION CONTROL PLAN - AREA 101-105, can existing drawing packages be provided for the existing de-energized substation? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 95 | In addition to the provided drawing package 1827988 dwg 2of6_civil 1of2, DEMOLITION AND EROSION CONTROL PLAN - AREA 101-105, can existing drawing packages be provided for the existing energized Dominion substation? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 96 | In addition to the provided 1827988 dwg 5of6_elec 1of2, can existing physical drawings please be provided for the existing energized Dominion substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 97 | In addition to the provided 1827988 dwg 5of6_elec 1of2, can existing P&C drawings please be provided for the existing energized Dominion substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 98 | In addition to the provided 1827988 dwg 5of6_elec 1of2, can existing physical drawings please be provided for the existing de-energized brick substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 99 | In addition to the provided 1827988 dwg 5of6_elec 1of2, can existing P&C drawings please be provided for the existing de-energized brick substation control house be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 100 | In addition to the provided 1827988 dwg 5of6_elec 1of2, can existing P&C drawings please be provided for the existing Gosport tie station be provided? | Appropriate technical detail and references have been provided in the plans and specifications. Propose according to the solicitation. | |
| 101 | Specification Section 26 13 14 Sub-clause 1.2. Reference cites IEEE standard C5 12 29-2023 Standard for Pad-Mounted Switchgear-Enclosure Integrity for Coastal Environments. Sub-clause 4.2.1.1 in the IEEE standard requires the exterior substrates to meet 1500-hours of salt spray resistance as tested according to ASTM standard B117. May a given manufacturer's standard paint finish specificaitons for power coat process be an acceptable means to demonstrate this IEEE compliance? | No. A manufacturer's standard paint finish specifications for a powder coat process are not, by themselves, an acceptable means to demonstrate compliance with IEEE standard. The standard requires specific performance testing to verify the durability of the switchgear's coating in coastal environments. The exterior substrates must be tested according to the procedures outlined in ASTM B117 and specified in Section 26 13 14-2.4.3 | |
| 102 | Specification Section 26 13 14 Sub-clause 1.2. Reference cites the Society For Protective Coatings (SSPC). A given manufacturer has a quality controlled coating process in order to meet 1500-hours of salt spray resistance as tested according to ASTM standard B117. May a given manufacturer's standard paint finish specificaitons for power coat process be an acceptable means to demonstrate compliance with the intent of the SSPC coating process? | No. The SSPC needs to be met as specified. | |
| 103 | Specification Section 26 13 14 Sub-clause 1.3.3. References ASCE 7-16 and requires a Seismic Category C. ASCE 7-16 does allow for a Seismic Category A which is based upon the distance between frames for a given manufacturer's standard designs. If a given manufacturer shall provide PE sealed structural calculatlons to support the seismic design capability of the building supplicd on this contract, would a seismic Category A also be acceptablc when supported by the structural PE calculations? | No. The design of the switchgear house must in accordance with ASCE 7-16 Seismic Design Category of C as specified. The design must be per the structural design criteria as specified in section 26 13 14 sub-clause 1.3.3. | |
| 104 | Specification Section 26 13 14 Sub-clause 1.3..3 References ASCE 7-16 and mentions Seismic values for this building. The building is to be elevated on a foundation with a cable vault on | ||
| contract drawing A-301. Please supply a Geotechnical Report for the building site. | Project-specific geotechnical data is provided on Sheets B-001 through B-004 and seismic values are provided on sheet S-001. | ||
| 105 | Specification Section 26 13 14 Sub-clause 1.3.5. Covers the insulation requirements regarding Themal Performancc for the building when tested in accordance with ASTM C 1363 or ASTM C518. The 2024 lnternational Energy Efficiency Code compliance is normally perfomed using of the U.S, Department of Energy's (DOE) COMcheck-Web on-line software. Will this be an acceptable method? | No. Follow ASTM C 1363 or ASTM C518 referenced in specification 26 13 14 | |
| 106 | Specification Section 26 13 14 Sub-clause 1.3.11. Requires the building skid (base-frarne) be hot-dipped galvanized and coated. A given manufacturer is able to achieve a 1500-hour hour ASTM B117 salt spray resistance using a standard coating system with using a hop-dipped galvanizcd base-frame, which saves on cost and scheduling time for manufacturing. Will the this method of compliance be acceptable? | No. The building skid (base-frame) must be hot-dipped galvanized and coated as specified. | |
| 107 | Specification Section 26 13 14 Sub-clause 1.5.5. Requires a building roof slope of 1-inch to 12- |
inches, which would make shipment very difficult and expensive. The 2021 International Building Code with Virginia amendments allows a 1/4-inch to 12-inch slope for a standing seam
| metal roof in section 1507.4.2.3. The standard roof design for a given manufacturer's buildings is a standing seam metal roof. Will a 1/4-inch 12-inch slope be acceptable for this project? | 1/4 inch to 12 inch slope is not acceptable. Provide 1" to 12" as the minimum roof slope specified. | ||
| 108 | Specification Section 26 13 14 Sub-clause 1.6 under SD-7 requires and ICC AC156 Shade Table test for non-structural components. We interpret this to mean that the Switchgear Building seismic values may be establish by structural calculations only. Is this a correct interpretation? | The Switchgear Building seismic design and evaluation must be based on the provided values and applicable codes as stated in sub-clause 1.3.3. The shake table testing as outlined in Section 26 13 14-3.8 and SD-07 is for seismic certification of nonstructural components such as essential mechanical and electrical equipment, not the switchgear building itself. | |
| 109 | Specification Section 26 13 14 Sub-clause 1.7.11. Requires the Switchgear house be Third Parły Certified by UL. UL no longer offers this service for buildings. Alternatively, may we use a State of Virginia Third Party building inspection service to review building plans and seal them. Is this acceptable? | Provide UL "Building Inspection" services as indicated on UL website. Addiitonally, the Electrical components within the Building must be UL listed to the maximum extent (with the exception of 38kV Components). All delegated design requirements specified in specification 26 13 14 must be signed and sealed by registered professional. | |
| 110 | Specification Section 26 13 14 Sub-clause 1.7.11 mentions a UL or 1EEE C37.20.2A rain test. A given manufacturer has a certified rain test report for a sample building or can perform an IEEE.C37 20.2A rain test after the building has been completed assembled at the job site. Please advise as to which method is aceptable? | IEEE.C37 20.2A Rain Test is to be performed after the building has been completed and assembled at the job site. | |
| 111 | Specification Section 26 13 14 Sub-clause 1.7.13.I. Pre-Roofing and Siding Installation |
Conference. Please cląrify if this conference is to be attended at the factory prior to
| manufacturing of the building? | The conference is to be attended at the factory prior to the manufacturing of the building. | ||
| 112 | Specification Section 26 13 l4 in Sub-clause 1.9.2.2 requires a verification process. The building will be manufactured at manufacturer's location(s) based upon approved design drawings. Please explain the intent or this verificaiton process. | Verify locations of framing and opening dimensions by field measurements before metal panel fabrication as specified in Section 26 13 14-1.9.2.2. | |
| 113 | Specification Section 26 13 14 Sub-clause 2.1.8 conflicts with the requirements of 304L stainless steel steel in sub-clause 1.7.10. A given manufacturer's standard panels are G90 galvanized sheet steel and the powder coat process to achieve ASTM B117 1500-hour salt spray resistance. Please advise on how to proceed. | Sub-clause 2.1.8 galvanized steel sheet is intended for any misc accessory material only as may be utilized by a given manufacuterer. Provide 304L stainless steel for wall panels as specified in section 1.7.10 | |
| 114 | Specification Section 26 13 14 Sub-clause 2.1.12 conflicts with the requirements of 304L stainless steel in Sub-clause 1.7.10. A given manufacturer uses standard ASTM A36/A36M steel plate as a standard floor plate. Please advise on how to proceed. | Plate steel indicated in sub-clause 1.7.10 is for metal wall panels components only,. Refer to section 2.1.12 for floor plates specification information. | |
| 115 | Specification Section 23 05 48.19 Sub-clause 1.2.1 provides the seismic values for the HVAC | ||
| system. Because the Switchgear Building is too large to perform a shake table test, will PE Sealed structural calculations be sufficient to certify that the HVAC and fastening system for the HVAC to the Switchgear Building be sufficient for the required seismic ratings listed in this sub-clause? | PE sealed structural calculations are sufficient to certify that the required seismic bracing has been analyzed and is adequate to resist the seismic loading per the project requirements. Provide shake table testing as outlined in Section 26 13 14-3.8 and SD-07 for seismic certification of nonstructural components such as essential mechanical and electrical equipment, not the switchgear building itself. | ||
| 116 | Specification Section 26 13 14 Sub-clause 2.3.2. Primary framing requires a single slope A single-slope design is not practical for a building that is required to be 38’-6” wide by 120" long per contract drawing A-101. A single slope will cause shipping height restrictions. A center peaked roof design is recommended for a building of this size. Will this be acceptable? | No. Maintain the single slope as designed. | |
| 117 | Specification Section 26 13 14 Sub-clause 2.4.1.a Stainless Steel Sheet. This requirement conflicts with the requirements galvanized sheet steel in sub-clause 2.1.8. A given manufacturer's roof and wall panel thicknesses are either 18, 14, or 12-gage thicknesses depending upon the building design requirements and structural calculations. Additionally, a given manufacturer utilizes interlocking sealed panels, which are not lap-seamed. Will this be acceptable? | Sub- Clause 2.1.8 galvanized steel sheet is intended for any misc accessory material only as may ultized by a given manufacturer. 2.4.1 refers to stainless steel wall/roof panels to be provided. Maintain 0.50" minimum stainless thickness as specified; thickness can increase based on requirements. | |
| 118 | Specification Section 26 13 14 Sub-clause 2.4.2 insulated panels using 304 grade stainless steel. This requirement conflicts with the requirements galvanized sheet sleet in sub-clause 2.18 A given manufacturer's wall panel designs employ the U-value recommendation in sub-clause 1.3.5 and confirmed to pass using the DOE's COMcheck-Web. The given manufacturer utilizes mechanical fasteners instead of adhesives. Is this be acceptable? | The insulated panels are to be 304L grade Stainless Steel. Manufacturers must use adhesives as specified. | |
| 119 | Specification Section 26 13 14 Sub-clause 2.4.3 Finishes. A given manufacturer does not use Kynar 500 or Hylar 500 painț finishes. A given manufacturer uses a fully warranted proprietary white powder-coat paint system that is quality controlled to achieve a 1500-hour ASTM B117 salt-spray resistance. Will a powder coat process paint system be acceptable? | No. Provide finishes in accordance with the solicitation. | |
| 120 | Specificaiion Section 26 13 14 Sub-clause 2.8.1 requires a 2-inch removable transom. Because transoms have been an inconvenience to some customers, a given manufacturer has developed exterior entry/egress doors that arc 9-feet tall. We propose this type of door instead the 8-Foot high door with a 12 inch transom. Will this be acceptable? | No. Provide an 8 foot high door with 12" transom. | |
| 121 | Specification Section 26 13 14 Sub-clause 2.8.1.a through point 6 for access doors. A given manufacturer's standard designs for the rear access doors meets all points with the exception of: (I) doors do not require removable posts/mullions (point a). (2) Standard rear doors have stainless steel separable-style door hinges instead of continuous hinges (point b) for easy removal. |
(3) The non-insulated provided as part of the 38kV switchgear radiant cooling system (point h).
(4) The doors serve onIy as cable compartment access means and therefore panic servess no
| purpose because panic hardware is for emergency exit from a building. | For rear equipment access doors ; Point a - Provide easily removal posts only when posts are required by a given manufacturer. Point b - Provide stainless steel continuous hinges or manufacturers standard stainless steel separable-style door hinges. Point h - Provide doors that maintain building enclosure thermal values specified. Point h ; provide panic hardware only for doors used as emergency egress. | ||
| 122 | Specification Section 26 13 14 Sub-clause 2.11.1 NAAM AMP 500 metal finish guide is a guide only. A given manufacturer's finish application process is implementdd to ensure the paint finish performance achieves the given manufacturer's perfomance and warranty conditions. May the given manufacturer follow their standard practices to achieve stated performacne and warranty criteria? | Sub-clause 2.11.1 specifically in reference to NAAMM AMP 500 can be utilized as a reference guide. All other finishing requirement sections indicated throughout this specification (26 13 14) must still be in compliance. | |
| 123 | Specification Section 26 13 14 Sub-c1ause 3.1.1 Examination. Is this the responsibility of the switchgcar building manufacturer? | Contractor is responsible for work depicted on the Drawings and Specifications. | |
| 124 | |||
| Specification Section 26 13 14 Sub-clause 3.5. Foundation for Equipment and Assemblies. Will the manufacturer be given a copy of the design and calculations of the foundation? | Contractor is responsible for work depicted on the Drawings and Specifications. | ||
| 125 | Specification Section 26 13 14 Sub-clause 3.8 requires special testing for Seismic-Resisting Components. Does this requirement apply to the switchgear building or to thc switchgear installcd within the building? | This requirement applies to the designated non-structural electrical components required to remain operational after an earthquake event. | |
| 126 | Specification Section 26 13 13 Sub-clause 1.1 Reference cites IEEE standard C57.12.29-2023 Standard for Pad-Mounted Switchgear-Enclosure Integrity for Coastal Environments. Because the 38kV switchgcar is located within the Switchgear Building covered in specification 26 13 14 the switchgear and should be considered as indoor switchgear. IEEE standard C37.20.2-201 S Sub- clause 6.2.8.1.1 requires a paint endurance of 600-hours of salt spray resistance as tested according to ASTM standard B117. A given manufacturer's standard Paint Finish Specifications for the powder coat process demonstrates compliance will both of the IEEE standards due to a 1500-hour salt spray resistance rating. Is this approach to finish acceptable? | Provide a min 2 coat polyvinylidene fluoride finishing system that can achieve the 1500-hour ASTM B117 testing | |
| 127 | Specification Section 26 13 13 Sub-clause 1.1 references ICC ES ACI 56 regarding a seismic shake table lest. IEEE standard C37.20.2-201 S for the metal-clad switchgear in sub-clause 8.1.4.6 refers to IEEE standard C37.81 [B10] for Class 1E equipment is a nuclear generating station. Please clarify as to which seismic standard should apply to the 38kV switchgear. | Provide 38kV switchgear with seismic certification per ICC ES AC156 as specified in Section 23 16 13-3.6 and SD-07. | |
| 128 | Specification Section 26 13 13 Sub-clause 1.1 refers to the 2024 version of the ICC International Building Code. This code is not applicable to the 38kV switchgear design and conflicts with IEEE standard C37.20.2-2015. Please confirm that the IEEE standard is the correct standard for the 38kV switchgear. | The IEEE C37.20.2-2015 standard is the correct standard for 38kV switchgear. | |
| 129 | Specification Section 26 13 13 Sub-clause 2.2.2.I.e and .f refer to the use of 304 or 304L | ||
| stainless steel for the enclosure. A given manufacturer's standard design is in accordance with IEEE standard C37.20.2-2015 in sub-clause 7.5.1 utilizing Mild Steel Gage (MSG) No. 11 and painted according to sub-clause 6.2.8.1.1 following the manufacturer's standard paint process to achieve 1500-hours salt spray resistance per ASTM B117 which exceeds the 600-hours required by sub-clause 6.2.8.1.1. Will this be acceptable? | No, provide according to the drawings and specs. | ||
| 130 | Specification Section 26 13 13 Sub-clause 2.2.8 requires a 200kV BIL insulation level for the Station Service Voltage Transformers. The highest BIL level available for a standard commercially available control power transformer is 150kV BIL. Since there are 30kV MCOV surge arresters on incoming service breakers MA, MB, and MC will the standard l50kV BIL rating be acceptable? | No, 200kV BIL for the station service tranformers must be provided per the drawings and specs. Refer to Drawing E-003 for further details. | |
| 131 | Specification Section 26 13 13 Sub-clause 2.2.10 requires Station Class surge arresters. Contract drawings E-602, 603, and 604 show a voltage rating of 30kV. Is that the Maximum Contiouous Operating Voltage (MCOV)? | Surge arrestor rating depicted on sheets E-602, 603, and 604 is the nominal rating. Surge arrestors must comply with Section 26 13 13-2.2.10. | |
| 132 | Specification Section 26 13 13 Sub-clauses 3.6 and 3.7 for Special Testing and Inspection of | ||
| Seismic-Resisting Components, Supports, and Attachments. Is the Contractor responsible for the requirements listed in these sub-clauses? | Contractor is responsible for work depicted on the Drawings and Specifications. | ||
| 133 | The instructions for Attachment B, Construction Project Data Sheet states that "total length for each project data sheet shall not exceed one (1) double-sided page (or (2) single-sided pages). Please confirm that this page limit includes the first page of Attachment B, which includes questions 1 through 7. | Propose according to the solicitation. | |
| 134 | According to the FAR Clauses Incorporated by Reference section in the solicitation, identifying FAR 52.222-33, FAR 52.222-33(e) states, "The Offeror shall submit to the Contracting Officer a copy of the project labor agreement with its offer". Currently, within the solicitation instructions, there are no provisions pertaining to where the Offeror should submit a copy of the Project Labor Agreement. In order to be compliant with FAR 52.222-33(e), please provide submittal instructions for the Project Labor Agreement. | Amendment 0004 removed the referenced clause from the solicitation. Question is no longer applicable. | |
| 135 | Please confirm if the IDS requires reporting to a remote monitoring location via dial-up cable directly from the IDS panel. | Remote monitoring will be accomplished via fiber; refer to sheet T-503. Copper telemetry not required. | |
| 136 | The shoring system installation for manholes 3010-3013 are in proximity to an existing overhead electrical service. Shoring installation appears to be within 10'-25'+/- of these lines. Please provide the voltage of these lines to determine if the shoring system can be installed at an OHSA approved safe distance. Please also advise if there has been any discussions with Dominion regarding shielding and/or de-energizing of these lines during SOE construction? Is there an opportunity to move the manholes south/closer to the main switchgear building to create more space between the lines and shoring installation? | Overhead line voltage is 115kV. |
Contractor is responsible for coordinating with existing OH line owner (Dominion) via the Government for shielding or de-energizing as required in Section 01 35 26.00 22-1.8.3.4 for working around power lines.
Manholes 3010 thru 3013 are placed to align with the microtunnel receive pits and switchgear security fence and cannot relocate.
137 The shoring system for manhole 3011 will be less than a foot away from the existing GOSPORT Substation Building. Please confirm that this building resides on a shallow foundation. Please also advise if there a coordination opportunity to shift these manholes due east to maximize as much space as possible between the shoring system and substation. Shifting the manholes will also maintain pedestrian access to the building as well. Please also advise if any special monitoring or shoring installation considerations will be required due to the proximity of shoring installation to the substation. Refer to Specification Appendix A1 for available as-built information as referenced from Specification Section 00 01 15-1.3.1.
These foundations will require underpinning/temporary support if excavation below the bearing surface is performed directly adjacent to the foundation per section 31 00 00 3.1.3.
| 138 | Please provide any asbuilt and/or dimensional information (width & depth) of the existing ductbank assemblies scheduled for demolition that will help quantify size and depth of ductbanks. | Refer to Specification Appendix A for available as-built information as referenced from Specification Section 00 01 15-1.3.1. |
| 139 | Please advise if any equipment is scheduled to be furnished and installed by Dominion Energy (DE)? If so, advise if there is any scheduling information for DE provided equipment. Please also confirm if any DE work is assumed to be paid by the GC or will all costs associated with DE work be paid directly by the Owner? | Dominion is responsible for Dominion-owned equipment. Contractor is responsible for work depicted on the Drawings and Specifications. |
| 140 | Please advise if manholes 1A and 1B can be rotated 90 degrees to better fit within the microtunnel launch pit shoring limits. If not, can the manholes be shifted in the east/west directions to be more centered with the launch pits. | Bid per plan and specifications. |
| 141 | Does a copy of the PLA agreement need to be submitted with the proposal response by all bidders or will it only required from the successful Offeror upon award? | Amendment 0004 removed the referenced requirement from the solicitation. Question is no longer applicable. |
| 142 | The following manholes are missing from Appendices Volume 3, Appendix D: EMH(2) / MH-638, EMH(2) / MH-1537, MH-2304, MH-2003, MH-667. These are all located at the Gosport Tie Station site and information on manhole sizing, conduit, and wire configuration is needed to properly assess civil, structural, and electrical work adjacent to and interfacing with these structures. | No survey was completed for these manholes. |
| 143 | Per Sheet E-800, Note 3. Please provide CHP Plant Drawing Set EPROJECT No. 1439057 for pathway reference between CHP and Existing GTS. | Refer to Specification Appendix A2 as referenced from Specification Section 00 01 15-1.3.1. |
| 144 | Section 26 13 13 page 6 2.2.3 (4) references SEL Relay 787. SEL has stated this relay is obsolete. Please provide selection of acceptable replacement SEL Relay model. | Section 26 13 13-2.2.3(4) references the SEL-787L relay, not the SEL-787. |
| 145 | Multiple electrical lines are shown on drawing G-103 coming out of the existing Gosport Substation. These lines are shown being demolished. Most of these electrical lines are in the footprint on the new Gosport Tie Station. There are no notes identifying these lines or whose responsibility it is to demolish them. It is unclear if they are overhead lines or duct banks. The electrical drawings do not show these lines. Drawing CD-103 shows eight concrete pads being demolished. Presently, there is electrical equipment on these pads, but it is not shown on the drawings. When will the electrical lines and equipment be demolished, and whose responsibility is it to do this work? | Electrical site demolition shown for reference on the General drawings. Refer to the ED series of drawings for details on electrical demolition. |
Contractor is responsible for work depicted on the Drawings and Specifications.
| 146 | Specificaiton Section 26 13 13 Sub-clause 1.1 Reference cites the 2015 version od IEEE | ||
| standard C37.20.02. The 1EEE standard should be C37.20.2 and the current code year is 2022. Please confim that IEEE standard C37.20.2-2015 is the corrcct code and year for the swilchgear on this project. | Yes, will update specification 26 13 13 to reference C37.20.02 2022. | ||
| 147 | Sheet Note 3 references TY801, but this sheet is not included in the drawings. Please provide TY801. | Reference TY701 in lieu of TY801. Refer to updated drawing | |
| 148 | Detail A4 references TY-504, but this sheet is not included in the drawings. Please provide TY-504. | Reference detail A1/T-501. Refer to updated drawing | |
| 149 | Detail A1 references TY-506, but this sheet is not included in the drawings. Please provide TY-506. | Reference detail C1/TY503. Refer to updated drawing | |
| 150 | Per paragraph 2.1 of Section 281005 the "ESS must be compatible with the installation's central monitoring system and monitored at the installation central monitoring station." Please specify the manufacturer and version of the existing IDS. | Existing system is Lenell. Refer to updated specification. | |
| 151 | Per paragraph 2.1 of Section 281005 the "ESS must be compatible with the installation's central monitoring system and monitored at the installation central monitoring station." Please specify the manufacturer and version of the existing ACS. | Existing system is Lenell. Refer to updated specification. | |
| 152 | Per paragraph 2.1 of Section 281005 the "ESS must be compatible with the installation's central monitoring system and monitored at the installation central monitoring station." Please specify the manufacturer and version of the existing CCTV System. | Existing system is Lenell. Refer to updated specification. | |
| 153 | Sheet G-105 shows new manhole 3014 immediately adjacent to existing manholes 2003 and 2004. ED-504 shows that one conductor remains in service during construction to feed the CHP which appears to conflict with the location and construction of manhole 3014. Manhole 3014 is also a cast in place structure at a deeper depth than the adjacent existing manoles 2003 and 2004. These difference in depths prohibit a side by side construction as shown without a shoring system between 3014 and 2003/2004. Please advise if manhole 3014 can be shifted south and east to avoid the CHP ductbank and permit shoring installation. Other ductbanks and water lines in the vicinty would require adjustment accordingly. | ED504 will be updated to show feeder from DISTB-G/S-4 to CHP cut and retained within existing manhole MH-2004 instead of existing to remain. Sheet ES515 shows the cut feeder ends spliced together again after installation of MH-3014 is complete. |
Refer to updated ED504.
| 154 | The cast in place manhole dimensions provided in the sheet keynotes coupled with the CIP manhole structural details create a much wider east-west footprint than what is drawn on the plans. Please confirm the sheet keytnote dimensions A, B, and C are correct. | Dimensions should be revised. Refer to updated ES101 |
| 155 | Sheet E-802, Note 1 states, "provide as a cost option for providing equipment to redice extended CHP downtime." Please clarify the Contractor's responsibility for this work for the bid. If pricing this as an option, please provide a list of equipment and their appurtenances to be priced with udpated Bid Form. | Note 1 will be updated to clarify Contractor's responsibility.. Refer to updated drawing |
| 156 | In spec section 26 13 14 1.3.1 pp 6 it references spec section 25 10 10 Scada/ HMI. This section is not included in the link for the project. Please provide this as the equipment for the project cannot be priced without this section. | Correct reference is 25 10 11. Refer to updated specification. |
File details come from the government source that posted it. Updated .