8.5.15_Amend-_Statement_of_Work.doc

STATEMENT OF WORK

FOR

PROJECT FTQW 08-1022

Repair Fire Alarm System Corrosion Control (B1348)

1.0 INTRODUCTION: Eielson Air Force Base (EAFB) is located approximately 23 miles southeast of Fairbanks, AK.

2.0 SCOPE: Furnish all labor, supplies, parts, transportation, tools, equipment, and facilities necessary to perform work required to complete project FTQW 08-1022 in strict accordance with this Statement of Work, specifications, and the contract.

3.0 EXISTING CONDITIONS: Building 1348 (Corrosion Control) is a 35,969 aircraft maintenance hangar originally constructed in 1987. The building supports corrosion control and structural maintenance operations for F-16 and other tenant/transient aircraft. These operations include multiple large paint spray areas and a media-blasting booth. In accordance with the 2009 IBC this facility is classified as High-Hazard Group H due to high volumes of flammable storage materials including paints, jet fuel, and miscellaneous caustics. The building construction is Type II-B non-combustible

3.1 The original fire alarm control panel installed during the original construction and located in the Electrical Room is a Kidde KDR-1000, modular, conventionally zoned fire alarm system. This control panel was originally released in 1983 and was a modular fire alarm control panel with a capacity for up to 70 zones. This panel is obsolete and spare parts are impossible to obtain. A Monaco M Series integrated fire alarm control panel and radio transceiver was installed in the past as a temporary replacement for the original panel, and a limited number of devices and functions were connected to the panel and implemented by the panel operations. A Pyrotronics System 3 conventionally zoned fire alarm control panel was also mounted adjacent to the fire alarm control panel equipment to service as an auxiliary audible control panel with additional notification appliance circuit (NAC) modules for the bell and strobe circuits.

3.2 The aircraft hangar and nose dock areas have an existing Aqueous Film-Forming Foam (AFFF) suppression system with overhead discharge sprinklers and two floor level automatic water driven monitors or “cannons” for a low level underwing system for aircraft and/or aircraft fuel involved fires. The overhead ceiling mounted sprinkler system is a pre-action, dry system with a large storage tank of AFFF concentrate in the main mechanical room. The low level monitor system is a pre-action deluge system with the deluge valve located adjacent to each of the monitors. Manual pull stations are located near the manual cannons within the nose dock area for direct manual activation of the monitor system. Abort switches are also located near exits from these areas. A large storage tank of AFFF concentrate is located in the main mechanical room.

3.3 The main suppression riser in the mechanical room has four zones that feed the AFFF system, in addition to the wet riser for building area protection outside the aircraft spaces. These zones are:

3.31 Zone 1 – South Hangar Pre-action Dry Pipe AFFF Area

3.32 Zone 2 – North Hangar Pre-action Dry Pipe AFFF Area

3.33 Zone 3 – Nose Dock Pre-action Dry Pipe AFFF Area

3.34 Zone 4 – Hangar Monitor Deluge “Cannon” AFFF System

3.35 Zone 5 – Wet Pipe System

3.4 The overhead or ceiling mounted Pre-Action Dry Pipe AFFF system is a Pre-action system with a dry pipe valve. The dry pipe valve has compressed air in the upper chamber of the dry pipe valve. When a heat detector in the corresponding zone of the fire alarm system operates, a 24 VDC solenoid in the release control piping of the dry pipe valve opens resulting in a decrease in pressure in the dry pipe chamber. Water pressure from the lower side of the valve will flow into the valve and trip the dry valve initiating water flow. The foam concentrate is connected to each of the dry pipe risers through an electrically operated ball valve ahead of the dry pipe valve, which would also be actuated by the operation of the heat detector in the associated zone of the fire alarm system. Each dry pipe riser also contains a pressure switch mounted in the alarm line piping of the dry pipe valve to provide an alarm signal on the activation of the dry pipe valve, and a supervisory air pressure switch is located in the compressed air supply to sound a supervisory alarm in the event of low air pressure. A 6 inch gate valve is located in front of the dry pipe valve to allow isolation of each riser, and a tamper or valve position switch is located on each gate valve to provide a valve position or tamper signal to the control panel.

3.5 The underwing AFFF monitor system is a deluge type system with two water powered foam monitors, with one located on each side of the hangar, with an oscillation pattern that will cover both the hangar areas and the nose dock area. The system was originally designed so that crossed zone UV/IR optical sensor would activate the system. When one UV/IR detector senses fire, its signal would sound a local alarm and alert the fire department. When a second UV/IR detector also senses fire, the control panel would operate a solenoid in the deluge valve located by each monitor to activate the monitor. The foam concentrate is also connected ahead of each of the deluge valves at the monitor through an electrically operated ball valve, which would also be actuated by the operation of the control panel. An abort switch is located at each monitor location and the nose dock location to allow the discharge of foam by the monitor to be aborted as long as the abort switch is depressed. A pull station is also located at each monitor and the nose location to also actuate the operation of the monitor deluge system. A control panel connection is also provided to the hangar ventilation system to shut down the system on the operation of the monitor system. An additional connection is provided in the motorized valve in the waste water line to close the line to prevent AFFF and excess water from entering the sanitary sewer. A 6 inch gate valve is located in at the riser locations to allow isolation of the foam monitor deluge system, and a tamper switch is located on the gate valve to provide a valve position or tamper signal to the control panel. All existing UV/IR detectors have been disconnected and removed from the building so that this optical detection system no longer operates the underwing AFFF monitors.

3.6 At this time, the low level monitors or cannons have been disabled through the manual isolation valve located adjacent to the cannon. Also, the “ice cube” relays above the temporary Monaco control panel have been removed from their sockets for all of the four zones of the Pre-Action Dry Pipe systems and Hangar Monitor Deluge system. Therefore, the automatic operation of the Pre-Action Dry-Pipe systems and mixing of AFFF at the Dry-Pipe valve are no longer operable at this time, however, the Dry-Pipe system will operate when a sprinkler head in the respective zone operates by the normal operation the fuse element of the sprinkler head. The Hangar Monitor Deluge system is currently not operational. The Wet Sprinkler system is operational.

3.7 Classified Areas: In accordance with ETL 98-8, Section A1.2.3.1.2 Hangars constructed between 1983 and 1996 were Class I, Division 2, Group D up to 18 inches and up to the height of the hangar door, except within two feet of the walls. Within two feet of the wall and in adjacent areas suitably cut off, the area is not classified.

3.7.1 The nose dock area was to be used for more comprehensive painting activities, and this area has been classified throughout as a Class I, Division I, Group D areas in accordance with NEC Article 516 for a Paint Spray Area.

3.7.2 The Sheet Metal Room and associated Paint Storage and Mechanical areas were installed as a separate addition under a project in 1989, and the Sheet Metal Room was originally labeled as a Paint Drying Room and this room and the Paint Storage Room were installed as a Class 1, Division 2, Group D location. Recent uses of the Paint Drying Room as a sheet metal shop area have included non-classified equipment and electrical installations, therefore this room will not be treated as a hazardous or classified area.

3.8 Fire Protection System: The fire protection systems are out of the scope of this fire alarm only project. However, the following existing conditions exist. To the extent that the fire alarm system is connected to the fire protection system we will be modifying parts of the system in this project. The intent is to leave the performance as is.

3.8.1 The existing fire protection system does not have a firewater pump. There is an existing to remain foam pump and the AFFF tank as recently repaired in 2014.

3.8.2 After investigation of the fire protection and domestic water system there are two separate water entrances. One water entrance for domestic water and another for fire protection water. The 16 inch fire protection entrance is utilized only for fire protection operation and is not connected to, nor is it intended to be used for potable water application. There is a separate four inch domestic cold water line serving the building’s potable water needs. While there are two separate water entrances, a backflow preventer is required on the fire protection system per the AWWA; however it is outside the scope of this project.

3.9 There is currently no mass notification system in the building.

4.0 DESCRIPTION OF WORK: This project consists of repairing the fire alarm system at the Corrosion Control Hangar (building 1348). Scope includes repair (replacement) of fire alarm systems for compliance with current codes, upgrades to life safety related equipment, replacement of NAC extender panel and Monaco BT2 panel, and integration of new fire alarm system with existing suppression system.

4.1 Emergency Lighting System

Existing emergency lights in the building will be replaced with fixtures rated for the environment that they are located. Exterior emergency egress access lighting will be provided at exits by using third head of exit signs installed as an exterior remote head.

4.2 Exiting

Exit signs will be placed at all exits and within exit pathways such that an exit or directional sign is visible within 100 feet of all areas of egress. Signs will be LED and rated for the environment they are located. All exit signs will have emergency power connections such that they remain illuminated for 90 minutes after a loss of power.

4.3 Building Fire Alarm and Suppression System

A new fire alarm control panel (FACP) will be located within the main electrical room with a remote annunciator located near the main entrance to the building on the South side (final location to be coordinated with EAFB Fire Department). The main FACP will be a Monaco M-2 Analog Addressable MAAP+ control panel that will provide addressable devices or where addressable devices are not possible, addressable modules provided in association with conventional devices (such as in classified areas). This control panel also has an integrated radio transceiver and will allow point reporting of individual alarm, supervisory and trouble alarms to the central Monaco D-21 Radio Alarm System at the central receiving station.

The new Monaco M-2 MAAP+ control panel is not UL listed for releasing service, therefore an additional UL listed releasing panel will also be required to operate the existing AFFF dry pipe systems and underwing foam monitor deluge system. The basis of design for the releasing panel will be a Potter PFC-6075R fire alarm and releasing control panel that will also be located in the Electrical Room. Input devices required for the operation of the overhead system dry pipe valves and the foam monitor deluge valves, and output NAC circuits required to operate the releasing solenoids for the dry pipe valves, deluge valves and the foam concentrate motor operated ball valves will be connected to the Potter Releasing Control Panel. A common alarm, supervisory and trouble connection will be provided from the Potter Releasing Control Panel to the

Monaco M-2 MAAP+ Fire Alarm Control Panel to report Releasing Panel alarms to the Monaco D21 central system at the central receiving station.

ETL 98-8 Section A3.7.3 requires that all UV/IR optical detectors be removed and that optical detection system shall not be used to activate any fire suppression system.

ETL-98-8 Section A3.7.2 requires that fire suppression systems be operated by automatic fire detectors consisting of thermal fire detectors which are rate compensated heat detectors with a temperature rating between 160 degrees F and 170 degrees F, and that the maximum coverage per detector is 625 square feet, which will require that heat detectors be space at no greater than 25 feet on center. Heat detectors in the hangar area and nose dock area will be connected to the releasing control panel and will activate their respective fire suppression systems.

The only magnetic hold open doors found during the investigative site visit were on the doors to the Paint Storage Room in the Paint Drying area. These magnetic door holders will be controlled by the fire alarm control panel with no additional smoke detection. A smoke detector will be located within the main electrical room for the FACP and all other control panel locations as required by code. The air handlers in this facility appear to be single pass with no return air, therefore no duct smoke detectors are required for the building fire alarm system however, the building ventilation system will be shut down whenever the foam system is activated.

Manual pull stations for the underwing AFFF system activation will be provided at the existing locations on the west side of the hangar, the east side of the hangar, and at the northwest and northeast doors of the nose dock. Abort switches will also be located adjacent to the pull stations at these locations. Manual pull stations connected to the Monaco M-2 MAAP+ FACP will be provided at all exits per NFPA 101.

Low temperature sensors connected to the building fire alarm panel will be provided in all mechanical rooms and spaces with wet sprinkler systems and will initiate a supervisory signal to the FACP.

Horn/strobe notification devices will be placed throughout the facility in accordance with NFPA 72 and UFCs. Additionally, a weatherproof horn/strobe will be installed on each side of the exterior of the building. A water flow bell will be located adjacent to the fire suppression system Fire Department Connection (FDC) on the North side of the building near the flight line. All strobes associated with the building fire alarm system will use clear lenses.

Visual notification devices will be located within the areas served by the AFFF system and provided with blue lenses to differentiate between a foam discharge event and a building fire alarm event. All manual pull stations and signage will be provided in accordance with ETL 02-15.

The hangar has two large air handlers with direct fuel fired heating coils, in accordance with UFC 3-600-01 Carbon Monoxide detection will be provided within the space containing the fuel fired appliance (mechanical mezzanine).

4.4 Classified Areas

As noted above, in accordance with ETL 98-8, Section A1.2.3.1.2, Hangars constructed between 1983 and 1996 were Class I, Division 2, Group D up to 18 inches and up to the height of the hangar door, except within two feet of the walls. Within two feet of the wall and in adjacent areas suitably cut off, the area is not classified. The Nosedock was constructed as a Class 1, Division 1, Group D location per NEC 516 for a Spray Room.

The Paint Storage Room adjacent to the Sheet Metal Room was installed as a Class 1, Division 2, Group D location and will remain a classified location. Recent uses of this room as a sheet metal shop area have included non-classified equipment and electrical installations, therefore this area will not be treated as a hazardous or classified area.

Hangars constructed since 1996 must comply with NEC Article 513, and this is the requirement for current Hangar construction under ETL 98-8. NEC 513 provides for a Class 1, Division 2 area for the entire hangar floor including any adjacent area not suitably cut off from the hangar up to a level of 18 inches above the floor. It also requires that the area within 5 feet horizontally from aircraft power plants or aircraft fuel tanks be classified as a Class 1, Division 2 location that also extends upward from the floor to a level five feet above the upper surface of wings and of engine enclosures.

Since to properly classify hangar locations in accordance with NEC 513 information on the aircraft types, the parking patterns, and the operations to be performed in the hangar must be obtained and known ahead of time, and due to the changing aircraft types being used on Eielson AFB and in this hangar, it is recommended that the work of this project be specified to follow the original classification designations. This will maintain the existing classification areas, and provide for a larger classified area that is already installed appropriately, thus a change in future aircraft type or parking patterns will not have any effect on the hangar classifications, as opposed to impacts on area classification that might occur should the equipment in the hangar be installed in accordance with NEC 513.

In addition, the Contractor will be required to install equipment outside the hazardous locations as much as possible.

5.0 SUBMITTALS: As indicated in the AF Form 66, Schedule of Material Submittals.

6.0 GOVERNMENT FURNISHED MATERIALS: None.

7.0 INSTRUCTIONS TO THE CONTRACTOR:

7.1 Photography is restricted to personnel who have worked through the Contracting Officer to obtain required permissions.

7.2 The airfield is a secure area of EAFB that also contains restricted areas with sensitive Government property and equipment. The Contractor shall follow all EAFB regulations and instructions for working in these different areas. For any exterior work required on this project, there will be free zones established that allow the Contractor to work in specified areas at scheduled dates and time to avoid conflicting with EAFB mission operations.

7.3 The Contractor’s daily work schedule shall be from 0700L - 1800L Monday through Friday. No work to be performed on federal holidays unless previously approved by the Government. An expansion of these hours is possible if approved by the Contracting Officer in advance.

7.4 Mission priorities take precedence over this work. Scheduling and coordination with the Government must be done to ensure there is no conflict with the mission. This may lead to the potential for non-normal work hours. The Contracting Officer shall be notified of any incidents or issues that may affect the work schedule or contract. On critical issues, oral notification should be made immediately, followed by written notification as soon as practical.

7.5 The Contractor shall keep the work area clean of all debris on a daily basis or more often as required. The Contractor shall keep storage areas clean and orderly at all times. The Contractor shall dispose of combustible wastes at the end of each work day and under no circumstances allow them to accumulate.

6 Aug 2015

END OF STATEMENT