J3_Design Narrative.pdf

REPAIR FIRE SUPPRESION

SYSTEM, HANGAR 3211 AT

JOINT BASE MCGUIRE-DIX-

LAKEHURST, NEW JERSEY

100% Design Narrative

July 2025

Prepared by: Jeff Desipio, William Morris, Barry Bailey

100% USAF JBMDL Hangar 3211 Fire Suppression Repair Design Narrative

REPAIR FIRE SUPPRESION SYSTEM, HANGAR 3211

Table of Contents

1.0 Design Criteria and References

1.1. Design Requirements

1.2. Applicable Codes and Regulations

1.3. Applicable Standards

2.0 Fire Alarm

2.1. Existing Foam System Alarm and Detection System

2.2. Existing Foam System Alarm and Detection System Demolition Approach

2.3. Existing Main Fire Alarm System

2.4. Main Fire Alarm System Replacement

2.5. Main Fire Alarm System Demolition Approach

3.0 Fire Protection

3.1. Existing Foam System

3.2. Overall Demolition Approach

4.0 Mechanical

4.1. Duct Detector / TAB for Existing Ductwork

1.0 Design Criteria and References

1.1. Design Requirements

The project shall comply with the United States Air Force (USAF) Standard Design Practices and reference the locally adopted codes.

1.2. Applicable Codes and Regulations

• UFC 1-200-01 “DoD Building Code”

• UFC 1-200-02 “High Performance Building Requirements”

• UFC 3-301-01 “Unified Facilities Criteria (UFC) Structural Engineering”

• UFC 3-401-01 “Mechanical Engineering” with applicable Unified Facility Criteria including but not limited to the following:

o UFC 3-410-01 “Heating Ventilating and Air Conditioning Systems” o UFC 3-420-01 “Plumbing Systems” o UFC 3-410-02 “Lonworks® Direct Digital Control for HVAC and Other Local Building Systems”

• UFC 3-501-01 “Electrical Engineering” with applicable Unified Facility Criteria including but not limited to the following:

o UFC 3-520-01 “Interior Electrical Systems” o UFC 3-530-01 “Interior and Exterior Lighting Systems and Controls” o UFC 3-575-02 “Lightning and Static Electricity Protection Systems” o UFC 3-580-01 “Telecommunications Interior Infrastructure Planning and Design”

• UFC 3-600-01 “Fire Protection Engineering for Facilities”

• IBC 2018 “International Building Code”

• ACI 318-14 “Building Code requirements for Structural Concrete”

• AISC 360-10 "Specification for Structural Steel Buildings"

• ASCE/SEI 7-16 "Minimum Design Loads for Buildings and Other Structures"

• NFPA 70 “National Electrical Code,” 2017

• NFPA 70E “Standard for Electrical Safety in the Workplace”

• NFPA 72 “National Fire Alarm and Signaling Code,” 2016

• NFPA 90A “Standard for the Installation of Air-Conditioning and Ventilating Systems”

• NFPA 101 “Life Safety Code,” 2018

1.3. Applicable Standards

• ANSI 13.1 - Pipe Labeling

• UL 174 – Hot Water Heaters

• ANSI/ASHRAE 55.1 “Thermal Environmental Conditions for Human Occupancy,” 2013

• ANSI/ASHRAE 61.2 “Ventilation for Acceptable Indoor Air Quality,”2013

• AHRI 1010 – Plumbing Fixtures (Water cooler)

• ASME A112 – Plumbing Fixtures (Faucets)

• ANSI/ASHRAE/IES 90.1 “Energy Standard for Building Except Low-Rise Residential Buildings,” 2019

• ANSI/ASHRAE/ICC/USGBC/IES 189.1 “Standard for the Design of High-Performance Green Buildings,”

• ANSI/TIA 568-D “Generic Telecommunications Cabling for Customer Premises”

• ANIS/TIA 569-E “Telecommunications Pathways and Spaces”

• ANSI/TIA/EIA 606-A “Administration Standard for the Telecommunications Infrastructure of Commercial Buildings”

• ANSI/TIA 607-D “Generic Telecommunications Bonding and Grounding (Earthing) for Customer Premises”

• IEEE 1584 “IEEE Guide for Performing Arc-Flash Hazard Calculations”

• UFC 4-010-01 “DoD Minimum Antiterrorism Standards for Buildings”

2.0 Fire Alarm

2.1. Existing Foam System Alarm and Detection System.

The existing foam system alarm and initiation system consists of foam system initiation pull stations at eight

(8) locations (four at existing egress doors, two on either side of the main hangar door, and two at locations where doors were previously removed). In addition to these pull stations, the existing system has four (4) blue alarm lights that, when flashing, indicate the foam system generators have been activated. The foam system alarm system also includes eleven (11) foam generator control valve tamper switches and their associated addressable modules.

The existing foam system is initiated by any of the foam system’s pull stations or by one of the two (2) hangar zone sprinkler system flow switches (FS-1 and FS-2). Both flow switches connect to the foam system control panel through addressable modules. The foam system control panel sends signals to the fire alarm control panel when either of the two flow switches are activated.

2.2. Existing Foam System Alarm and Detection System Demolition Approach.

All the existing foam system initiation pull stations, blue alarm lights, and associated conduits and wires will be removed back to the foam system control panel (located in the mechanical room). All the foam system foam generator control valve tamper switches, their addressable modules, and associated conduits and wires back to the foam system control panel will be removed. The existing communication cables between the main fire alarm control panel and the foam system control panel will be removed. The flow switches FS-1 and FS-2 will be temporarily connected to the existing main fire alarm control panel until the new fire alarm system is activated. All conduits and wires between the foam system control panel and the foam system tank and associated control valves will be removed. The foam system tank, piping, and control valves area is discussed below in section 3.0 Fire Protection.

2.3. Existing Main Fire Alarm System

The existing main fire alarm system consist of pull stations (in addition to the foam system initiation pull stations) at thirteen (13) locations (two on either side of the main hangar door, six at each egress door, two at locations of removed egress doors, one in the mechanical room door and two inside the north side office), alarm horns/lights at fourteen (14) locations (one in the mechanical room, one in men’s room, one in women’s room, seven in the hangar area, two at the north office hallway, and one inside and one on outside of the electrical room).

In addition to the pull stations and the alarm horns, the fire alarm system has a main fire alarm control panel (located in the mechanical room) and a local fire alarm annunciation panel (located on the outside of the hangar west wall next to the south side of the hangar doors) and also has connections to six (6) sprinkler system flow switches, and twelve (12) sprinkler system control valve tamper switches. Each of these switches is hard-wired to an addressable module and these modules connect to the existing main fire alarm control panel.

2.4. Main Fire Alarm System Replacement

A new fire alarm voice evacuation system will be installed, consisting of a new fire alarm voice evacuation system control panel (FACP) with emergency communication control, an autonomous control unit, and an embedded radio transceiver (all to be located in the mechanical room on the wall behind the existing foam chemical storage tank). The fire alarm system shall be a sole sourced Monaco MAAP-X system. The new fire alarm system will also include:

• Local operating console/remote display unit (LOC/RDU),

• Addressable pull stations,

• Wall-mounted addressable alarm combination speaker/strobes,

• Wall-mounted addressable alarm strobes,

• Wall-mounted addressable alarm CO warning blue strobe,

• Ceiling-mounted addressable alarm combination speaker/strobes,

• Ceiling-mounted addressable alarm strobes,

• Addressable speakers,

• Text display unit (located inside the hangar near the main entrance door),

• Fire/evacuation lighted signs at some egress doors.

• LT graphic annunciator

The system will also have speaker and strobe NAC power extenders to amplify and synchronize notification appliances.

In addition to the pull stations, speaker/strobes and addressable speakers, new addressable modules will be installed at each existing sprinkler system flow switch and each sprinkler system control valve tamper switch.

Each of these new addressable modules will be hard-wired to the existing flow switch and tamper switch (without removing the existing connection to the existing main fire alarm control system addressable modules) using FMC (Flexible Metal Conduit). Each of these new addressable fire alarm system modules will be wired back to the new fire alarm control panel (located in the mechanical room) using galvanized steel conduit (color coded red). The cabling for such devices shall be power limited 18AWG cable. The 24VDC power feeds specified on the drawing shall utilize 14AWG cable, and 120VAC feeds shall utilize 12AWG Cable. The data lines will utilize RS-485 cable. The Antenna shall be coaxial cable, refer to manufacturer installation documents for typing. All cables listed shall be fire power limited, be rated per NFPA Class B and shall not be t-tapped during a cable run. All new conduits and boxes installed for the new fire alarm system will be color coded red and each conduit termination will match the device/enclosure into which it is terminating. All new fire alarm devices installed inside the building within 45 feet of main hangar doors below top of door frame and shall have a minimum NEMA 3R enclosure rating. All new fire alarm devices installed on the outside of the hangar shall have a NEMA 3R weatherproof enclosure rating.

The new fire alarm system will also include a duct smoke detector in the north office HVAC system return duct, downstream of the system air filter. The duct smoke detector will be programed to shut down the HVAC supply fan if a smoke alarm is detected. A CO detection sensor will be installed in the mechanical room and an associated blue alarm light will be added on the outside of the building next to the main entrance. Additional CO detectors will be installed at the existing burner locations. The new fire alarm system will be wired to each of the hangar unit heaters and will be programed to shut down each system if the fire alarm system detects flow to the sprinklers in that zone. The HVAC will remain locked out until the Fire Brigade releases the alarm condition.

The new fire alarm system will have one local operating console/remote display unit (LOC/RTU) located inside the hangar near the main entrance egress door. The new fire alarm system will have two local operating consoles (LOC) (one located on either side of the hangar). The main fire alarm panel will also annunciate all alarms and alerts of the system.

The new fire alarm system will be programed to (in the event of a fire alarm detection device activation) activate each fire alarm speaker/strobe and broadcast (over the speaker system) various messages based on the detection device that was activated and send alarm signals to the base central fire alarm system. These messages include, but are not limited to, fire alarm evacuation or system failures. The fire alarm system will also be programmed for alarm situations not related to a fire event (messages sent from the base central fire alarm system or locally from any one of the LOCs).

The new fire alarm system will be supplied with a UL listed backup battery system to allow the system to function for 48 hours without AC power from the existing building power system. The battery system will have a 20% spare capacity and be capable (after operating for 48 hours without AC power) of delivering 5 minutes of alarm functions and 15 minutes of voice functions.

2.5. Main Fire Alarm System Demolition Approach.

The new fire alarm system shall be installed parallel to the existing fire alarm system which shall remain operational during construction. After the new fire alarm system is fully operational and tested, the existing main fire alarm system (including pull stations, alarm strobe/horns, and associated conduits and wires back to the existing main fire alarm control panel) will be removed. All existing main fire alarm system flow switch and tamper switch addressable modules and associated conduits and wires back to the main fire alarm control panel and to each switch will be removed. The existing conduit and wire connections from the main fire alarm control panel and the base fire alarm system will be disconnected and properly decommissioned.

3.0 Fire Protection

3.1. Existing Foam System

The existing High Expansion Foam (HEF) fire suppression system is composed of a foam proportioner, pressure-actuated valve, foam concentrate storage tank, test connections, eleven (11) foam system control valves, a surge tank, eleven (11) generators, and numerous isolation valves. The HEF system connects to a 10-inch fire protection header within the mechanical room that also serves multiple wet sprinkler zones throughout the hangar.

The fire protection water service for the hangar is supplied by four (4) fire water pumps (2500 GPM each, 125 psi TDH), and utilizes a 500,000-gallon water tank as support. An 18-inch underground line supplies water to five buildings, including Bldg. 3211. A 12-inch lateral supplies water to the building for the fire protection system and enters through the mechanical room where the piping reduces to 10-inch before branching to each riser. The mechanical room is also where all the zone valves are located.

3.2. Overall Demolition Approach

The demolition approach is to remove and disconnect all the HEF system elements identified in section 3.1.

The project will be phased, such that the demolition of the existing HEF/fire alarm system will not begin until the new fire alarm system is operational. The 10-inch fire protection piping will be capped and threaded rods will be utilized to maintain thrust protection. The design intent is to patch any existing openings to match existing conditions that result from the removal of the HEF system components.

4.0 Mechanical

4.1. Duct Detectors and Emergency Shut-down

Based on further survey of the hangar, Burns recommends installing duct detectors on the air-handling equipment in the north office spaces (AHU-1). The air-handling unit located in the south office spaces did not meet the supply or return airflow requirement dictated by NFPA 90A section. 11.4.2.1.

The approximate nominal supply and return air flow of the AHU-1 is 3000 CFM. The duct detectors will be installed after each air filter. A remote testing station will be installed at each duct smoke detector.

In addition to AHU-1, Burns also recommends de-energizing the high-velocity unit heaters (UH-1,2,3) in the hangar space upon an emergency event. The approximate nominal air flows of the UH-1,2,3 are each 30800 CFM of supply air. Due to the lack of ductwork on the supply and return sides of the unit heaters, it was agreed between Burns and the Joint Base to utilize the system flow switches to de-energize the unit heaters that serve the hangar. It appears there are already fire alarm relays at the starters located up on the catwalk adjacent to the unit heaters. The contractor shall engage the base personnel to confirm the sequence of operation for each unit heater and the signals that de-energize each unit heater.