1、Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Sea Systems Command, ATTN: SEA 05Q, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandardsnavy.mil, with the subject line “Document Comment”. Since contact
2、information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 6320 INCH-POUND MIL-PRF-32227 25 October 2006 PERFORMANCE SPECIFICATION FLAME DETECTOR ZONE MODULE (FDZM), SWITCH CLOSURE ZONE MODULE (S
3、CZM), AND ISOLATOR, ADVANCED FIRE AND SMOKE SENSOR SYSTEM (AFSSS) This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the performance requirements for Flame Detector Zone Modules (FDZM) (see 6.8.6), Switch
4、 Closure Zone Modules (SCZM) (see 6.8.16), and isolators (see 6.8.9) and their respective enclosures, which are components of an overall Advanced Fire and Smoke Sensor System (AFSSS) for use on naval ships. These devices may be of commercial-off-the-shelf (COTS) design, but must be rugged (see 6.8.1
5、3) enough to meet all of the requirements of this performance specification and the rigors of Navy shipboard service. Performance requirements for the other associated AFSSS components (e.g., ionization (see 6.8.8) and photoelectric (see 6.8.10) smoke sensors (see 6.8.15), heat sensors (see 6.8.7),
6、flame detectors (see 6.8.5), and alarm panel (see 6.8.2) are contained in their respective AFSSS specifications. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in othe
7、r sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specifica
8、tion, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cite
9、d in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-S-901 - Shock Tests, H.I. (High Impact); Shipboard Machinery, Equipment and Systems, Requirements for MIL-E-2036 - Enclosures for Electric and Electronic Equipment MIL-DTL-24643 - Cables and Cords, Electric, Low Smoke, for S
10、hipboard Use General Specifications for Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32227 DEPARTMENT OF DEFENSE STANDARDS MIL-STD-167-1 - Mechanical Vibrations of Shipboard Equipment (Type I Environmental and Type II Internally Excited) M
11、IL-STD-461 - Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Av
12、enue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. NATIONAL FIRE PROTECTION A
13、SSOCIATION (NFPA) NFPA 72 - National Fire Alarm Code (Copies of this document are available from National Fire Protection Association, 11 Tracy Drive, Avon, MA 02322 or online at www.nfpa.org.) UNDERWRITERS LABORATORES INC. (UL) UL 864 - Control Units for Fire-Protective Signaling Systems (Copies of
14、 this document are available from Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, IL 60062-2096 or online at .) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing
15、in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2 and 6.3), a sample shall be subjected to first article inspection in accordance with 4.2. 3.2 Design requirements. 3.2.1 Des
16、ign, materials, and manufacturing process. The contractor shall select the materials, but the materials shall meet all of the interface, operational, and performance requirements specified herein. 3.2.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environment
17、ally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.3 Configuration. The overall FDZM, SCZM, and isolator shall each consist of th
18、e appropriate electronics contained inside an appropriate enclosure. The terms “Flame Detector Zone Module”, “Switch Closure Zone Module”, and “isolator”, as used in this specification, refer to the overall FDZM, SCZM, and isolator, consisting of the devices appropriate electronics and the appropria
19、te enclosure. FDZMs, SCZMs, and isolators shall operate properly in both overhead or bulkhead mounted positions. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32227 3.3.1 Interchangeability. The AFSSS FDZM shall have a unique model number
20、 assigned to it, and shall be physically identical and interchangeable with all other AFSSS FDZMs from the same manufacturer. The AFSSS SCZM shall have a unique model number assigned to it and shall be physically identical and interchangeable with all other AFSSS SCZMs from the same manufacturer. Th
21、e AFSSS isolator shall have a unique model number assigned to it and shall be physically identical and interchangeable with all other AFSSS isolators from the same manufacturer. 3.3.2 Individual addressability. The FDZM and the SCZM shall each have an adjustable mechanical device or dipswitch that c
22、an be easily set to allow each device to be individually identifiable and addressable by the AFSSS alarm panel once installed in a specific location in a shipboard compartment. Once set, this device or dipswitch shall be easily capable of later being set to a different address, without the use of sp
23、ecial tools or equipment, to support interchangeability. This individual addressability requirement may also apply to the isolator, but it is not specifically required for the isolator. 3.3.3 Enclosure. An enclosure shall securely house and enclose the FDZM, SCZM, and isolator. The enclosure for the
24、 isolator shall possess enough flat surface area to allow two separate LS2SWU-1 cables (see MIL-DTL-24643) (i.e., the sensor loop) with appropriate watertight stuffing tubes (see MIL-E-2036) to penetrate the enclosure. The enclosure for the SCZM shall possess enough flat surface area to allow three
25、separate LS2SWU-1 cables (i.e., two for the sensor loop and one for connection to the switch closure device) with appropriate watertight stuffing tubes to penetrate the enclosure. The enclosure for the FDZM shall possess enough flat surface area to allow five separate cables (i.e., two LS2SWU-1 cabl
26、es for the sensor loop, two LS2SWU-1 cables for the flame detector power loop, and one appropriate shielded, watertight cable for the connection between the FDZM and the flame detector) with appropriate watertight stuffing tubes to penetrate the enclosure. These flat surface areas do not necessarily
27、 have to be all on the same face of the enclosure. All enclosures shall provide a conductive path for the shields of all of their cables to connect to ships hull to provide shield termination. All enclosures shall possess mounting tabs or brackets with clearance holes for bolts that secure the junct
28、ion box to 1-inch long threaded-female metal standoffs welded to the overhead or bulkhead of the compartment. 3.4 Degree of enclosure. All enclosures shall be at least NEMA-4 (National Electrical Manufacturers Association) watertight and dust tight. Thus, standard electrical boxes with holes or knoc
29、kout plugs (which are commonly used for mounting commercial grade FDZMs, SCZMs, and isolators, but are not watertight) are not permitted as enclosures. 3.5 Weight. The total weight of each individual FDZM, SCZM, or isolator (including each of their respective enclosures) shall not exceed 4 pounds. 3
30、.6 Size. FDZMs, SCZMs, and isolators (and their respective enclosures) shall be as compact in size as possible, while allowing sufficient space inside for cable penetrations. The maximum height of each of the FDZM, SCZM, and isolator shall not exceed 9 inches. The maximum width of each of the FDZM,
31、SCZM, and isolator shall not exceed 9 inches. The maximum depth of each of the FDZM, SCZM, and isolator shall not exceed 7 inches. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32227 3.7 Interface requirements. 3.7.1 Electrical interface.
32、 3.7.1.1 Sensor loop interface. FDZMs, SCZMs, and isolators shall be compatible with the UL listed AFSSS alarm panel and shall communicate their status to the alarm panel via the LS2SWU-1 sensor loop cable. SCZMs and isolators shall obtain power from as well as communicate their status to the alarm
33、panel over this sensor loop LS2SWU-1 cabling. FDZMs shall communicate their status to the alarm panel over the sensor loop cabling, but shall receive power from a separate flame detector power cable (see 3.7.1.2). The LS2SWU-1 sensor loop cabling shall be routed from the alarm panel to the FDZMs, SC
34、ZMs, and isolators and various sensors throughout the ships compartments and then return to the alarm panel in a looped NFPA 72, Style 6, Class A signaling line circuit (see 6.8.14) arrangement so that single opens on the loop shall not result in the loss of any sensors, flame detectors (via their F
35、DZMs) or switch closure devices (via their SCZMs). 3.7.1.2 Flame detector zone module (flame detector power) interface with the alarm panel. Since power is not supplied to the flame detector via the sensor (communication) loop in 3.7.1.1, a separate LS2SWU-1 cable shall be routed from the alarm pane
36、l to the various FDZMs and then returned to the alarm panel in a looped arrangement to provide power from the alarm panel to the FDZMs. The FDZM shall provide power to its respective flame detector via the cable identified in 3.7.1.3. Thus, in this arrangement, the FDZM shall obtain power from (and
37、be compatible with) the UL listed AFSSS alarm panel and supply that power to its associated/connected flame detector via the cable identified in 3.7.1.3. 3.7.1.3 Flame detector zone module (power and sense line) interface with the flame detector. An appropriate watertight, shielded cable shall conne
38、ct the FDZM to its associated flame detector. This cable shall transfer power (that originated at the alarm panel) from the FDZM (see 3.7.1.2) to the flame detector. This cable shall also transmit the alarm and trouble status of the flame detector to the FDZM to send back to the alarm panel. 3.7.1.4
39、 Switch closure zone module (power and sense line) interface with switch closure device. LS2SWU-1 cable shall connect the SCZM to its associated switch closure device. This cable shall transfer power (transmitted over the sensor loop for SCZMs) from the SCZM (see 3.7.1.1) to the switch closure devic
40、e and shall also transmit the alarm and trouble status of the device to the SCZM to send back to the alarm panel. 3.7.2 Ship interface. The FDZMs, SCZMs, and isolators shall be mounted with bolts to 1-inch long threaded-female metal standoffs welded onto the overheads and bulkheads of the ships comp
41、artments. 3.8 Operating requirements. 3.8.1 Basic operation. When tested in accordance with 4.5.1: a. An appropriate alarm shall register and latch at the alarm panel for the flame detector. FDZMs shall also comply with 3.8.2. b. An appropriate alarm shall register and latch at the alarm panel for t
42、he SCZM. SCZMs shall also comply with 3.8.3. c. An appropriate Class A trouble indication shall register at the alarm panel for the sensor loop. In addition, a second trouble indication stating the loss of the SCZM shall register at the alarm panel. Isolators shall also comply with 3.8.4. d. An appr
43、opriate trouble indication shall register at the alarm panel indicating the loss of the flame detector. FDZMs shall also comply with 3.8.2. e. An appropriate trouble indication shall register at the alarm panel indicating the loss of the flame detector. FDZMs shall also comply with 3.8.2. f. An appr
44、opriate trouble indication shall register at the alarm panel indicating the loss of the SCZM switch. SCZMs shall also comply with 3.8.3. g. The FDZM, SCZM, and isolator shall sustain no physical damage, such as cracks, loosening, warping, thermal deterioration, or dislodgment of parts. 4 Provided by
45、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32227 3.8.2 Flame detector zone module operation. If flame detectors do not interface directly with the AFSSS alarm panel, flame detectors shall interface with the AFSSS alarm panel via a FDZM, compatible
46、with the AFSSS alarm panel, which provides and identifies the unique address of the flame detector and also channels power from the alarm panel to the flame detector. When a flame detector is exposed to a flame of appropriate and sufficient radiant energy, the FDZM shall transmit its associated alar
47、m to the AFSSS alarm panel. FDZMs shall ensure that flame detectors shall be resettable (see 6.8.11) after alarm, but only after a reset (see 6.8.11) at the alarm panel is manually executed and the flame at the detector has been removed (i.e., flame detector alarms shall latch at the alarm panel). F
48、DZMs shall be supervised such that a distinct trouble signal (see 6.8.17) shall register at the alarm panel if flame detector power is not provided to the flame detector. Furthermore, a separate distinct trouble signal shall register at the alarm panel if either conductor on the flame detector sense
49、 line (between the flame detector and the FDZM) is opened. 3.8.3 Switch closure zone module operation. Switch closure type devices shall interface with the AFSSS alarm panel via a SCZM, compatible with the AFSSS alarm panel, which provides and identifies the unique address of the switch closure type device. When any switch closure type device (such as a water flow switch, manual pull station, water switch, and flooding switch) is closed, the SCZM shall tran
