N19 Main Tunnel Phase 6 Drawings.pdf

This document is a Mass Notification Upgrade technical specification for SAXC 14-1006 at Cheyenne Mountain Air Force Station, Colorado, focusing on the Main Tunnels Node 19 fire alarm and mass notification system. The project scope encompasses the design, installation, testing, and commissioning of a comprehensive fire alarm and mass notification system within the main tunnel structure, including all necessary equipment, wiring, control panels, batteries, and associated infrastructure to replace or upgrade existing notification capabilities.

The technical specifications detail extensive system requirements including fire alarm/mass notification operational matrices for Node 19; intelligibility and auditability testing worksheets; detailed electrical load calculations for amplifiers and speaker circuits across multiple bus shelter power supplies; battery and voltage drop calculations for both bus shelters and access tunnels; and comprehensive wiring diagrams and schedules for the central access tunnel and south access tunnel segments. The system incorporates multiple signal modules (SKc2A, SKc-CTS, SKc-AC1), series battery connection details for 24-volt systems, integrity 405 strobe wiring configurations, and class "A" wiring methodology throughout. Technical drawings specify device identifiers, correct wiring methods, typical equipment mounting elevations, fire alarm panel chassis and hardware layers, and operational layer configurations. The documentation includes detailed address lists for SLC Loop 1 and SLC Loop 2 devices, SLC capacity calculations, and voltage/battery calculations for multiple bus power supplies (BPS #1 through #6) and auxiliary power supplies (APS #3) serving south tunnel segments.