PD37272525 - EN - REPAIR - FIRE SUPPRESSION WATER LINE - SEABEA - 78 - CNIC

B78 water supply to the fire suppression system has been impacted due to a leak in the underground pipe underneath the loading dock. Upon further discussion with the on-site staff, there's an underground leak within the fire suppression line at the loading dock, rendering the fire suppression system completely inoperative. To mitigate this issue and ensure B78 has a sufficient fire suppression system, repairs to the underground pipe and re-routing of the fire line is recommended. Requirement: 1. Conduct a full site inspection to verify current condition, verify underground fire line location ( GPRS ), and confirm existing point of connection at the fire backflow preventer. 2. Remove or abandon the existing damaged fire suppression line from the point of connection backflow to the existing fire riser inside the facility. 3. Perform open-cut trenching for the new fire line run in the roadway/parking lot, maintaining minimum burial depth per code. 4. Backfill with approved material, compact to specification, and restore pavement or landscaping as needed. 5. Install approximately 750 to 1000 linear feet of new C900 PVC piping for the new fire suppression water line. 4. Route to begin at existing fire line POC (backflow preventer), run underground across the roadway/parking lot, and transition vertically along the face of Building 78 and connect to the existing fire riser inside the facility. 5. Install necessary thrust blocks, isolation valves, and restraints per NFPA 24 and UFC 3-600-01. 9. Ensure new connection meets all fire system demand requirements. 10. Perform hydrostatic pressure test of the new fire line per NFPA.