Z2DA--666-27-102 Lightning Protection Update B71N

system (LPS) for Building 71N was installed in 1989 during the building s original construction. Overall, the system remains in fair condition, though it requires repair because several air terminals have become detached from their adhesive bonds to the roof surface. Air terminals are present at all high points of the structure, and all roof-mounted equipment and appurtenances are properly grounded. A main grounding bus connects the communication systems and possibly the electrical distribution system to the primary service ground. The specific location where the grounding system bonds together the structural steel, electrical system, lightning protection components, and plumbing to create an equipotential ground could not be identified during the assessment. A continuous grounding loop encircles Buildings 9, 71, and 71N, with all roof air terminals and down conductors tied into this loop. Down conductors descend to the loop at the corners of each of these buildings. Each air terminal has at least two separate grounding paths, satisfying current code requirements. No Transient Voltage Surge Suppression (TVSS) devices were observed in the system. The lower 8 feet of the ground down conductors are encased in PVC electrical conduit for protection. New Construction Recent construction has added large equipment and a screen wall to the roof, which now obstructs and interferes with the original positioning of the existing air terminals. This new equipment sits higher than the existing lightning protection system components, rendering the current air terminals ineffective at intercepting and safely directing lightning strikes to ground. Project Requirements To bring the existing lightning protection system (LPS) into compliance the following corrections are needed: Install Transient Voltage Surge Suppression (TVSS) devices at the building s main service panel. Establish proper bonding by interconnecting all electrical systems, communication systems, piping, and structural steel at the service entrance to create an equipotential ground. Repair all roof air terminals that have detached or pulled away from their adhesive mounts on the roof surface. Install new air terminals at both ends of each screen wall, with additional terminals spaced at 20-foot intervals along the top of each wall, and at the highest point of the HVAC ductwork. Install an air terminal at each corner of the new HVAC equipment. Connect all newly installed air terminals to the existing LPS using #2 bare copper conductors. After these corrections have been completed, a qualified inspection is required to verify full compliance with NFPA 780 and UL 96A standards. Upon successful inspection, a Master Label Certificate should be issued for the lightning protection system. General: Construction project is to be completed within 120 calendar days from date of Notice to Proceed (NTP). Contractor shall provide all equipment, materials, supplies, tools, software, supervision, and labor required for this project, which may include, but is not limited to, demolition work, providing negative pressure environment for work, and providing all new equipment, utilities, and room finishes as indicated in the plans and this SOW per VA construction standards. Safety submittals shall be completed and approved prior to the commencement of on-site construction work. Material selection submittals shall be completed and approved prior to ordering of materials for the project. The building tenants not in the construction areas will remain at work in the buildings during this construction. Patients will remain on the floor in areas not under construction, so the contractor shall make patient safety, and infection control measures a priority. The contractor shall coordinate work locations and schedules with VA COR to minimize impact to building tenants. All electrical, carpentry, architectural, mechanical work, product design, project management, and other work needed on this project shall be provided by the Contractor. All required electrical work, low, medium, or high voltage, shall be installed and terminated by the Contractor. No wiring or cabling shall be abandoned in place. All piping, cabling, and wiring shall be labeled. All cabling and patch cabling shall match the VAMC s station-standard colors. The installation must, at a minimum, be in accordance with all applicable codes indicated in the Department of Veterans Affairs Design Manuals and VA .PUBLICATIONS (Master Construction Specifications, Construction Standards, National Fire Protection Association (NFPA), Underwriters Laboratory (UL), International Building Code IBC 2003, and National Electric Code (NEC) building codes and standards and the VA Information Security Handbook 6500.6, 6550.0 etc.). The Contractor shall read and be familiar with the most current editions of the applicable codes, standards, guides, and manuals. Sources can be accessed at the Office of Construction and Facilities Management s Technical Information Library (TIL) (http://www.cfm.va.gov/TIL). Any penetrations through any floors, ceilings, or walls shall be fire caulked, or otherwise fire sealed, and shall be done in this contract to meet VA standards and NFPA standards. Contractor shall utilize the VAMC s station-standard fire stop products or approved equal product(s). The station-standard products are SpecSeal fire caulk product is SpecSeal SSS Intumescent Firestop Sealant; and, if needed, the SpecSeal Composite Sheet may be used in areas approved by the COR. The Contractor shall inquire of the COR if any existing equipment, fixtures, hardware, doors, frames, or any other property removed is desired to be retained by the VA for reuse elsewhere within the medical center, at the time of removal. If the VA desires to retain an item, the Contractor shall deliver it to a location designated by the COR. If the VA does not desire to retain an item, the Contractor shall dispose of it properly off-station. The new components installed shall be tested and commissioned, re-certified, and/or tested before VA acceptance. All testing parameters shall be provided by the Contractor with source references to the COR and 3rd-party reviewer before testing begins. Copies of all test reports must be provided to the COR. HVAC systems that have changes made to them as part of this project, beyond diffuser replacement, shall be tested and balanced by the Contractor. Any IT data cables installed or modified as part of this effort shall be tested after installation. Test methods and plans shall be coordinated with the COR. Any Med Gas systems modified as part of this effort shall be re-certified back to the closest shut-off in the system. The Contractor shall arrange for any required re-certification as part of this contract and shall provide plans and results to the COR for approval. Fire alarm devices that are tied into the building fire alarm system, that are replaced or relocated as a result of this work, shall be tested before that phase of the project is complete. The Contractor shall arrange for all required fire alarm testing. If a building s fire alarm system is under warranty, testing must be accomplished by the contractor who holds the warranty. Any fire sprinklers that are relocated as part of this project shall be reviewed and approved by VA Safety prior to installation. All fire sprinkler work shal