WI_24360_Fire_Detection_System.pdf

NOAA Ship RONALD H. BROWN (R-104)

27 August 2018

ITEM NO. 24360 BASIC ITEM MEB/JAL

FIRE/SMOKE ALARM SYSTEM MODIFICATIONS

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1.0 ABSTRACT

This item describes modifications and installations to the Fire/Smoke Detection Alarm System.

2.0 REFERENCES:

2.1 Drawing 436-6932892, Fire and Smoke Alarm Sytem EWD

3.0 ITEM LOCATION/DESCRIPTION: Throughout the ship. See 7.0.

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES: None

5.0 NOTES

5.1 The contractor and all subcontractors regardless of tier are advised to review other work items under this contract, including but not limited to 10420 to determine their effect on the work required under this work item. Many of the definitions relating to performance of this work item are found in references included in work item 10420.

6.0 QUALTIY ASSURANCE REQUIREMENTS: None Additional.

7.0 STATEMENT OF WORK REQUIRED

7.1 Accomplish the following removals from the existing fire alarm detection system. Utilize References 2.1-2.4 for guidance.

7.1.1 Remove the existing fire detection panel from the aft

bulkhead of the bridge.

7.1.2 Remove the remote annunciator panel from Main Control.

7.1.3 Remove all manual pull stations, smoke detectors, and

thermal detectors and associated cabling throughout the ship.

7.2 Install an ABS/USCG approved addressable Fire Detection System using Reference 2.1 as guidance. The components listed below are part of a typical approved system:

7.2.1 Main Fire Detection Panel and panel enclosure on the aft bulkhead of in Pilot House in same location as the removed system.

• Addressable detection

• Display of Alarm, Fault, More Alarms and Pre-warning

• Sequential display of alarms

• Isolated instantaneous and delayed outputs

• Operating buttons for Silence and More Alarms

• Internal buzzer for Fire, More Alarms, and/or Fault

• Monitoring of bell circuits for circuit trouble

• Interfaces with zone disconnect units to temporarily disconnect preprogrammed sensors

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• Automatically reactivates temporarily disconnected sensors after preprogrammed time period

• Self-diagnostic ability

7.2.2. Repeater Panel and panel enclosure in the Main Control mounted above the main console:

• Communication to main panel

• Remote display of system alarms

7.2.3. Optical Detector, Addressable

7.2.4 Optical Detector Splash Proof Addressable

7.2.5 Ionization Smoke Detector Addressable

7.2.6. Ionization Smoke Detector, Splash Proof, addressable.

7.2.7. Ionization Smoke Detector, Intrinsically Safe, addressable.

7.2.8. Thermal Detector addressable

7.2.9 Manual Call Point addressable.

7.2.10. Manual Call Point, Splash Proof addressable.

7.2.11. Alarm bell:

• Sound output of 91 dB at 3 feet

• Low current consumption

7.2.12. Zener Barrier Unit, addressable, Build-in 1 to 4 zener diodes

7.2.13. Short Circuit Isolator:

• Detects and isolates short circuits in a detector loop

• Automatic reset upon removal of short circuit

• Isolation of single sector of a loop

7.2.14. Zone Disconnect Unit,:

• Addressable

• Permits temporary disconnection of single or multiple detectors

• Automatically reactivates disconnected detectors after two hours of temporary deactivation

7.2.15. Transformers as required.

7.2.16. Connection Boxes as required.

• Waterproof

• Terminal block

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• Bronze

7.3 Spacing of detectors shall not exceed the following maximum values:

Type of Detector

Maximum Floor Area Per Detector

Maximum Distance Between Centers

Maximum Distance From

Bulkheads Thermal 398 Ft2 29.5 Ft 15 Ft

(37 M2) (9 M) (4.5 M) Smoke 796 Ft2 36 Ft 18 Ft

(74 M2) (11 M) (5.5 M)

7.4 Install manually-operated call points throughout accommodation spaces, service space, and control stations utilizing existing system layout for guidance. Locate one manually-operated call point at each exit.

7.5 Install backup electrical power equipment and connections to support installation of Fire Detection system to meet USCG and ABS Regulations.

7.6 Install a bell adjacent to the repeater panel in Main Control.

7.7 Install a bell adjacent to the Main Fire Detection Panel in the

Pilot House.

7.8 Install connection to General Alarm Contact Maker to cause the General Alarm to sound throughout the ship if a fire detection alarm is not acknowledged within two minutes using Reference 2.1 as guidance.

7.9 Installation is to include all new wiring and cabling for the entire system. Utilize existing system cable routes and penetrations.

7.10 Preparation of drawings

7.10.1 Provide a new drawing of the system showing the location of each new component throughout the vessel for submittal to ABS.

7.10.2 Provide “as-built” drawings for all drawings in this Work Item including modified systems affected by this Work Item.

7.11 Inspection/Test

7.11.1 Cable insulation resistance test

7.11.2 Enclosure ground test

7.11.3 Functional test of each system component in the presence of the ABS Surveyor.

7.12 Provide the services of the authorized manufacturer's

representative during the design, installation and testing.

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7.13 Install aluminum cable tags for each cable at each device and at every bulkhead penetration.

8.0 GENERAL REQUIREMENTS: None additional