EE 50 25(R1) SPECIFICATIONS OF ADDRESSABLE FLOOD ALARM SYSTEM ISSUING AUTHORITY DIRECTORATE OF ELECTRICAL ENGINEERING INTEGRATED HEADQUARTERS MOD (N) NEW DELHI 110011
2 RECORD OF AMENDMENTS Sl Amendment Authority Date Signature 2. Revision Note: Nil 3. Historical Record: Nil
3 CONTENTS SL No Description Page No 1 Scope 6 2 System Characteristics 6 3 Architecture of Flood Alarm System 6 7 4 System Configuration 7 8 5 Main Control Panel 8 11 6 Secondary Control Panel 11 7 Construction 11 12 8 Built in Test Equipment 13 9 Environmental conditions 14 10 Documentation. 14 17 11 Spares 17 18 12 Type Testing 19 13 EMI/EMC Testing 14 Inspection 19 20 15 Information to be supplied when Tendering 20 16 System Performance Responsibility. 20 17 Services Of Engineers. 20 21 18 Maintenance. 21 19 Training. 21 20 Product Support 21 21 Warranty. 21 EE 50 25 (R1)
4 STATEMENT OF TECHNICAL REQUIREMENTS ADDRESSABLE FLOOD ALARM SYSTEM WITH CAPABILITY TO INTEGRATE WITH BDCS/ IPMS 1. Addressable Flood Alarm System (AFAS). 1.1 Scope. This technical specification covers the manufacturing, supply, testing and onboard commissioning of the Addressable Flood Alarm System with capability to integrate with Battle Damage Control System (BDCS)/ Integrated Platform Management System (IPMS) onboard Naval Ships. 2. System Characteristics. 2.1 The Flood Alarm System is required to detect ingress of water at specified locations and accordingly provide audio and visual indication at predetermined locations viz. DCHQ/ MCR/ Bridge/ outside the affected compartment or as decided by the Order placing Authorities. 2.2 The flood alarm sensors energise when the water level increases beyond a pre determined level and de energize when the water falls below the predetermined level, providing an audio and visual (light) alarm at the master and slave (repeater) monitoring panel and other specified locations. 2.3 The system should be suitable for operation on 115V/127V/230V 50/60Hz 1phase, AC as mains supply and all other secondary power supplies required for the operation of the system be derived from main supply. The power to the system should be provisioned through on line UPS. In case main supply fails, the UPS should power the system automatically without causing any interruption in system input power supply. The UPS shall be provided with a maintenance free battery to supply 2 hours back up power. The battery should be maintenance free having a service life of minimum 4 years. 3. Architecture of Flood Alarm System. 3.1 The addressable sensors should be configured with either a Centralised Control or a Distributed Control. In the Centralised Control and Distributed Monitoring, all the addressable sensors can be monitored and controlled from one Programmable Controller with display and the information can be repeated to other positions through digital networks. In Distributed Control and Distributed Monitoring architecture, the sensors can be monitored and controlled from more
5 than one Programmable Controller that resides in another host system, usually associated with BDCS/other machinery control platform management etc. The choice between the above two architecture would of course depend on size of platform, no. of sensors, co fitment of the host system, NBCD requirements etc. and to be defined by the Order placing authority. 3.2 Interface Requirements. The System shall have provision for interfacing with Battle Damage Control System (BDCS)/ Integrated Platform Management System (IPMS). Interface protocol shall be finalized between the vendors of Flood Alarm System & BDCS/ IPMS. Depending upon the interface requirement the protocol could be serial RS 485/422/232 or Ethernet gigabit network or any other latest protocol as finalized by the vendors and Order placing authority. The system should display following on BDCS/ IPMS display: (a) (b) (c) Alarm due to flooding (indicating place of flooding) System Fault Alarm (indicating type of fault) System health monitoring status. 4 System Configuration. The Flood Alarm System should be designed to have modular construction. Details of major units of the system are as follows: 4.1 Flood Sensors. The function of flood sensors is to provide requisite signal to flood alarm control panel in case of presence of water in vicinity of the sensor. The flood sensors will be located in underwater compartments as decided by Naval authorities. The sensors will be fitted at 15/ 25 cm above the lowest possible space in the compartment and should perform satisfactorily in both positions. The sensors should conform to IP 67 or better specifications and JSS 55555 specs. The flood sensors may come in contact with fluids other than sea water like oil etc and should therefore be able to function satisfactorily in presence of fluids/ contaminated water. Flood sensor should have dual pick up for redundancy. The sensors will be provided with bracket for facilitating fitment inside the compartment and should have provision to avoid bimetallic corrosion. Indication of flood alarm signal to main flood alarm control panel and secondary flood alarm control panel/ repeaters/ slave should be achieved without any time lag. The sensors may be configured in zones or directly connected to the main flood alarm control panel depending on the size of the ship/as required by the Indian Navy. 4.2 Type of Sensors. There are various types of flood detection sensors available for selection of Order placing authorities depending upon application and size of compartment. The types of sensors required for integration with flood alarm system are: EE 50 25 (R1)
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7 (i) (ii) (iii) (iv) (v) Magnetic Float Switch Sensor Pressure Sensor Vibrating Fork /Piezo electric Sensor Microwave Sensor Dual Level Flood Sensor 4.3 Selection of Flood Sensors. The type and number of flood sensors for installation onboard ship will depend upon the type and size of each compartment. The under mentioned guidelines though not limited to be followed for selection of flood sensors for use onboard naval ships: (a) Magazine Compartments. All magazine compartments onboard ships are to be provided with low level flood sensors. Each magazine compartment is to be provided with a minimum of two flood sensors to give indication of presence of water before the level reaches to 0.1 m. The flood sensors to be fitted in magazines must be electrically insulated, intrinsically safe and spark proof. Zener barrier units may also be connected in sensor circuit to make it intrinsic safe completely. Pressure type of flood sensors are suitable for magazine compartments. (b) Bilge Compartments. The sensors used in bilge compartment should conform to IP 68 specifications, easy to install and maintenance free. Microwave type of flood sensor is suitable for bilge compartments. (c) Other Underwater Compartments. All under water compartments are to be fitted with a minimum of two sensors (port & stbd). One of the sensor should have low as well as high level flood indication. The low level indication is to appear before water level rises to 0.3 mtr and high level at 1 mtr. The main machinery spaces are to be fitted with four sensors on port & stbd sides and fore and aft of the compartment. Dual Level sensor, Float Level switch sensor and Vibrating Fork type flood sensors are suitable for machinery and general under water compartments. 5. Main Flood Alarm Control Panel. The panel is used for indicating the presence of water based on signal received from flood sensors. It receives signal EE 50 25 (R1)
8 directly from the sensors or through JBs with amplifiers units. The requirement of main flood alarm control panel are as follows:
9 (a) The panel should be LCD based, touch screen type and panel housing should conform to IP 55/ JSS 55555 specs. (b) The main flood alarm control panel is to provide audio and visual alarm in case of flooding in vicinity of any of the flood sensors. The number of indicators will be as many as the number of compartments in which sensors are installed. In case of compartments having more than one sensor, alarm will be triggered when any of the sensor detects presence of water. However, separate indications are to be provided for each sensor collocated in same compartment. (c) The system shall be designed to give an audio visual alarm indication within four seconds of water crossing the threshold value. The activation of any sensor is to initiate an audiovisual alarm at the control panel indicating the zone and compartment details in which the detector has operated. (d) Facility shall be provided in the control panel to connect external hooter fitted in crew accommodation, service space, control station & Machinery spaces if a flood alarm is not acknowledged within two minutes after activation. (e) The audio and visual alarm once triggered should continue to be ON until physically reset at the main flood alarm control panel. There should be provision for accepting the alarm (individually for audio and visual alarm) so that buzzer can be switched off and flashing stops. However, visual indication of flooding should still be available. (f) In no alarm state, all indications will be off, but power indication and system health indication must glow. (g) Fault Diagnostic. The system shall have inbuilt fault diagnostic and status scan programme which shall at a pre defined interval scan the status of each module/unit and sensor and indicate faults if any, on Main Control Panel along with its address, zone configuration, location text, loop number etc. (h) In addition, the system should have provision for self test and should be capable of checking following from the flood alarm control panel: EE 50 25 (R1)
10 (i) (ii) (iii) (iv) (v) Defect/ malfunction of any sensor. Short circuit in system/ associated cabling. Open circuit in the cable. Defect in any of the system subunits. Power failure (j) Visual alarm is to be initiated in case of any fault as per para 5 (g) & 5(h) above. The indication will be cleared automatically when the fault has been cleared. (k) In fault condition audio visual alarm shall be initiated. The audio alarm will be made off by Accept push. However, steady visual alarm will persist until the Reset push is operated. (l) While one fault is existing and audio alarm is silenced or warning lights of cleared faults are restored to normal, indication of new faults must not be affected. (m) When Reset push is operated individual alarm or warning lights of cleared faults are restored to normal, but if any faults are still present, their indications must not be affected. (n) Password Protection. User control on the Main Control Panel shall be password protected. Pressing any control key on the panel shall prompt for appropriate level password. Authorisation to access higher level system functions such as device isolation and configuration data entry through panel keyboard should also be password protected. (p) Event Logging. The system should have provision of Online event logging of various alarms with date and time for each addressable detector. The data to be retained using non volatile memory. (q) The main control panel shall have provisions for interfacing with a graphic based PC / LCD front end to provide the ship s GA drawing as an
11 underlay. The individual address of each sensor along with all kill card data would enable speedier response to flooding.
12 (r) The interface network for sensors shall be in a loop which shall not be rendered ineffective due any fault occurring in it. Further, the system can be reconfigured in the event of a failure of the sensor(s). (s) The system architecture should cater for requirement of signal shaping or line repeaters to cater for longer distances between sensor and panel. (t) The design should have provision for isolation of any zone(s). 6. Secondary Flood Alarm Panel/Repeaters/ Slave Indicators. There may be requirement of secondary flood alarm panel/repeaters/ Slave Indicators in addition to the main flood alarm control panel depending upon the ship size and envisaged flood alarm system configuration. These panels should be able to provide audio and visual indication including location of flooding similar to main control panel. However, the resetting of alarms and self test will be done only from main control panel. The alarms in these panels will be reset once the alarm has been reset at the main control panel. The panel housing should conform to IP 55/ JS 55555 specs. 6.1 The exact configuration of the system will vary from ship to ship and may vary for different OEMs. The system may include other subunits like junction boxes, annunciators, isolation transformers etc. 7. Construction. 7.1 Enclosure. The construction of Main Control Panel and Secondary Flood Alarm Panel/Repeaters/ Slave Indicators etc. should be ruggedised to withstand the severe marine environment prevalent onboard ships. The enclosure of Main/Secondary/Repeater panels should conform to IP 65 specifications. 7.2 Mounting. The control panel shall be bulkhead mounted type, drip proof, enclosed in sheet steel cubicle made of 14 SWG sheet steel/ Aluminium. All the components shall be mounted such that they are accessible from front for operation, maintenance and replacement. The panel shall be hinged type provided with adequate number of latches operated by keys. EE 50 25 (R1)
13 7.3 The size and weight of the panel shall be kept to a minimum consistent with electrical and mechanical requirements. Units weighing more than 40 Kgs are to be provided with suitable lifting arrangements. 7.4 Cable entry should be from the bottom of the panel. The panel should be supplied with detachable gland plate at the bottom of the panel. The panel and other components of the system should be supplied with cable entry glands suitable for yard supply cables. Yard will furnish overall dia of cables on receipt of interconnection diagram from the supplier. 7.5 Cable terminal connections and procedure for laying the system cables onboard ship etc. are to be clearly brought out at the time of submitting the technical proposal. 7.6 The supplier should generate detailed cable diagram for the complete system, render assistance in preparation of system cabling and connection diagrams and during STW / Harbour Acceptance Trials of the system. 7.7 All cables used in the system should be Fire retardant, zero halogen toxicity and should be capable to withstand operating temperature from 30 degree Centigrade to +120 degree centigrade. Cables in the bilges and magazines are to be laid through metallic conduit. 7.8 The cables used for internal wiring shall be provided with identification ferrules on both ends. 10% spare terminals are to be provided on the terminal block of the panel. Suitable crimping socket of reputed make shall be fitted in the terminals for cable termination. 7.9 Cable Glands. Cable glands, entry, termination and Junction components should be as per NES 514 in addition to DSG/EED/VI/1535/R6. 7.10 Tally Plates. All units must have tallies and diagram plates conforming to NES 723. 7.11 Block diagram of system will be supplied in Aluminum anodized plate and to be fitted on inner side of the control panel front door.
14 8. BUILT IN TEST EQUIPMENT (BITE) 8.1 Features of BITE 8.1.1 The BITE will be responsible for assessing the state of a sub system before the application software is invoked. The BITE software should run automatically at power up or in any other mode of operation. It should run without the operating system and will have total control over the sub system hardware and if there is no fatal errors detected the control will pass over to the operating system. The design of the system is to cater for the following features: (a) Built in test (BIT) facility to identify, locate and indicate to the operator any fault that has occurred in the system during operation. The BITE shall detect 100% of all fatal faults. BIT messages shall be displayed on the console. Further, the BIT shall isolate 95% of all detected faults to one line replaceable unit (LRU) and 100% of all detected faults to two or three LRUs. The BITE shall be capable of identifying the faults in at least (and not limited to) the following: (i) Sensors: Sensors faults like the sensor value going out of limit. (ii) Processors: Timeouts to identify the faulty programs sequences, power supply faults, memory faults, peripheral I/O faults. (iii) Communication: Detection of physical communication breaks and excessively high error rates. (b) Diagnostic Hardware and Software tools to enable trouble shooting up to component level repairs at a qualified shore based depot facility. (c) Results of built in tests of system shall be able to be displayed on HMI. If required, BIT results and contents of memory shall be able to be downloaded into the portable diagnostic terminal via the equipment s diagnostic port for more detailed troubleshooting. (d) On line help display of system maintenance manual for preventive and corrective maintenance procedures and Circuit Schematics of the sub systems of the AFAS (and operators manual) shall be possible from main console.
15 (e) The failures reported by BITE should be correlated to the Circuit Schematics and Maintenance manual online held display as mentioned above.
16 9. ENVIRONMENTAL CONDITIONS 9.1 The system is to be capable of operating in the following environmental conditions: (a) Storage temperature: (b) Operating temperature: (c) Humidity: (d) Vibration: (e) Ship motion: 0 to 70 deg. C 0 to 55 deg. C 95% RH condensing at 35 deg. C As per MIL STD 167 Type I Roll + or 30 deg, period of roll 10 s (f) Pitch 7 degrees fore and aft of centerline. Period 6 seconds. (g) List: permanent 20 degrees either side. 10. DOCUMENTATION 10.1 System Documents 10.1.1 Provision of adequate documentation for effective operation and maintenance of AFAS is an important aspect of the contract. The documents should be as per MIL N 7298C whereas the format of the documents should be as per Service Standard JSS 0251 or equivalent. Document sizes shall be according to metric standards. All drawings and documents shall contain dimensions and other parameters in metric units. The following technical documents shall be prepared and supplied as required: (a) User Hand Book (b) Technical Manual Part I (Technical description/ circuit drawings) (c) Technical Manual Part II (Preventive and Corrective Maintenance routines and trouble shooting) (d) Technical Manual Part III
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18 (e) Technical Manual Part IV (Manufacturer s Parts List, Layout drawings of the PCB and sub units) 10.2 Drawings. 10.2.1 The drawing package is to include all drawings, specifications and details sufficient to enable complete repairs and maintenance of system. Drawings are to be delivered in full size reproducible form and as CAD files on electronic media. The following information is to be included in the engineering drawings and associated lists of the AFAS: (a) Dimensional outline, in metric units, of all major assemblies showing overall and principal dimensions in sufficient details to establish the limit of space in all directions required for installation, operation and maintenance. (b) A table of reference drawings to include drawing number of each major assembly. (c) A block diagram of all major assemblies showing interconnection between these assemblies. (d) etc. (e) (f) Location, type and dimension of cable entrance plates, connectors, Any special instructions for installation, preservation, painting, etc. Heat dissipation. 10.3 Manuals 10.3.1 In addition to the general requirements covered by the data ordering document, the content and arrangement of the manuals shall be as follows: (a) (b) (c) Front matter General information Installation Specifications
19 (d) Operation (e) Maintenance, repair and trouble shooting for levels up to second level maintenance. Component level maintenance procedures shall be offered as an option. (f) (g) (h) (j) (k) Parts identification Test Data Drawings reduced size Appendix inserts on special components Software Validation 10.3.2 The technical manuals shall be produced in accordance with MIL M 7298 C and shall be provided in both hard copy form and on optical media (CD ROM). Electronic documentation shall be compliant with the Computer Aided Logistics Support (CALS) standards. Evidence of prior experience in generating CALS compliant AFAS documentation shall be provided along with the technical offer. 10.4 Software Documentation. 10.4.1 The software documentation that has to be supplied as deliverables and as part of the software development process and the documentation template and description will be in accordance with MIL STD 498, MIL STD 2167A, and ISO 12207. Further, it is imperative that the supplier is to provide the complete source code of all the applications residing on all the AFAS nodes. In addition, it is imperative that the supplier submits references of past projects where the supplier has followed the above quoted standards for software development. 10.5 Trial Documents. 10.5.1 The trial documents have to be prepared by the vendor and the same has to be approved by NHQ before its promulgation. The document will outline the type of tests, test procedures, and the validation criteria for evaluating the system. The trial documents are as follows (not limited to): (a) (b) Factory Acceptance Test Schedule. Harbour Acceptance Test Schedule.
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21 10.6 Hardware Documentation 10.6.1 Hardware documentation in respect of hardware units like computers, interface units, data bus, I/O cards modules, control consoles, panels etc. specially designed by the firm must contain detailed information. The following documentation should be supplied by the firm: (a) System Description. This document shall describe the system level concepts, inter connectivity, technical description of interfaces, communication protocols including block diagrams, test procedures using BITE and first level maintenance procedures. (b) Circuit Diagrams. Detailed circuit diagrams depicting implementation of various schemes along with signal description to be supplied. (c) Maintenance Manuals. Manuals containing hardware details of all repairable units to undertake fourth level maintenance should be provided. (d) Technical Specifications. This document shall be described the technical specifications of the hardware equipment used including details of I/O cards controllers etc. (e) Installation Specification. This document shall include installation specifications and drawing of all hardware units. (f) Hardware User Manual. This document will contain all aspects pertaining to initial start up of the system, hardware configuration settings procedures. 11. MISCELLANEOUS. 11.1 Spares The onboard spares, base & depot spares and test equipment is to be recommended by the supplier. Such recommendations are to be commensurate with the reliability of critical components and component use in the system. Special tools and test equipment is to be supplied for onboard maintenance. 11.1.1 On Board Spares. An itemized list of OBS, special tool and special test equipment, which will be supplied with the main equipment, is to be furnished along with the quotation for the main equipment. The OBS and special tool are
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23 to be catered for all of the ship s staff onboard maintenance routines and possible repair requirements. The OBS and tools should include following: (a) All spares required for exploitation of system up to 2 years. (b) One set of important assemblies to effect repair by replacement. (c) plant. One set of general purpose maintenance tools along with each (d) One set of special tools required for disassembling/assembling of components to effect repair by replacement. (e) One ships set of onboard spares recommended by supplier and approved by IHQ to be supplied along with equipment. CPL/PIL and item wise cost is to be forwarded along with the list of onboard spares while obtaining IHQ approval. 11.1.2 Five Year Base & Depot Spares/Comprehensive Part List. Base spares recommendation is to cover maintenance/overhaul requirements for 5 years including two refits. Recommendations for insurance holding of long lead items are also to be indicated. Itemized cost of B&D spares are to be forwarded with the main offer. 11.1.3 Supplier to forward a list of Base & Depot spares for 5 years maintenance indicating Makes, Part Number and Cost of the each item. The list is to be provided in INCAT documentation format. 11.1.4 List of OBS and B&D spares are to be provided as soft copies in addition to hard copies in the ILMS format mentioned above. 11.1.5 Installation Spares. A set of installation spares as recommended by Supplier is to be supplied along with main item. 11.1.6 Installation Materials. All installation materials are to be supplied by the firm e.g. (shock/vibration mounts, free end connectors/plug/sockets, crimping sockets/terminals etc.) required to complete the installation of system onboard ships. Any other material required for installation of the system to be supplied by the supplier. EE 50 25 (R1)
24 11.1.7 Packing. Each of the item is to be individually PIP packed, suitable identification label giving details such as Sr. No. of the item, Order No. etc. are to be marked legibly on outside the packing, which should be prominently visible. On board spares/installation spares are to be packed in separate cases individually with word On Board Spares and B&D Spares and Installation Spares distinctly marked on each cases. The lists are to be attached to the cases. 12. Type testing. Type testing will be in accordance with JSS 55555 (for ship borne equipment protected (class N1). The applicable tests are as follows: Sl TEST SPECIFICATION (a) Vibration JSS 55555 Test 28 (b) High Temperature JSS 55555 Test 17 (c) Damp heat JSS 55555 Test 10 (d) Drip proof JSS 55555 Test 11 (e) Low Temperature JSS 55555 Test 20 (f) Immersion JSS 55555 Test 19 (g) Mould growth JSS 55555 Test 21 (h) Bump JSS 55555 Test 5 (j) Shock/Impact JSS 55555 Test 24 (k) Corrosion (salt) JSS 55555 Test 9 (l) Contamination JSS 55555 Test 6 (m) Ship Motion NWS 1000 Pt 1 Chap 1 Section 8 (n) Effectiveness of Enclosure Against Immersion NES 629 13. EMI/EMC Testing. The AFAS should meet the EMI/EMC test requirements as per MIL STD 461 E.
25 14. Inspection and Testing. 14.1 Factory Acceptance Trial Report. Supplier to provide Factory Acceptance Trial Reports indicating details of tests conducted and test reports thereof. The supplier to prepare a draft ATP and submit for approval of Navy.FATs will be undertaken as per approved ATPs. Further, the equipment will be inspected by nominated inspector of Navy based on approved QAP and drawings. 15. Information to be supplied when Tendering. (a) A brief specification of the equipment offered, including a statement showing any way in which the equipment is not expected to meet the stipulated requirement. (b) (c) (d) (e) (f) Overall dimensions and proposed fixing arrangement. Estimated total weight Wiring diagram, circuit, Control and protection system. Control and indication facility. Heat dissipation (g) Confirmation is required that all tests indicated in the specification can be under taken at the manufacturer s works, otherwise any alternate arrangement proposed are to be stated. (h) (j) Maintenance space required for the equipment. Power load requirement. 16. System Performance Responsibility. Supplier has to under take full responsibility for ensuring satisfactory performance of the system onboard ship.
26 17. Services Of Engineers. Services of Engineers are to be made available for advice/assistance in connection with onboard installation, defect rectification, testing, tuning, Setting to Work, commissioning of the system and presentation of HATS. Any installations and spare material required during any of these stages are to be supplied/replenished by the supplier free of cost. Any special equipment required for testing/stw are to be brought by the service Engineers. 18. Maintenance. The 1 st /2 nd level maintenance will be carried by SS and 3 rd and 4 th level maintenance support will be provided by the vendor on the basis of Annual Maintenances Contract. 19. Training. 19.1 Complete training package for onboard exploitation, and maintenance, and for second level maintenance, along with tools and test kit, is to be offered. Third level (depot level) maintenance shall be offered together with the required special tools and test equipment. Training dockets for ship s staff and dockyard personnel are to be separately formulated. Training should preferably be carried out in India. Extensive use of simulators/stimulators may be made to provide a near real scenario of the total system to aid in the training. However, if such facilities are not feasible, the training may be conducted at the OEMs premises. 20. Product Support. 20.1 The supplier should confirm product support for a minimum period of 20 years for the equipment offered by them from the date of commissioning of the system. Essential infrastructure to sustain the system for 20 years from the time of commissioning should be recommended and included in the technical proposal. 21. Warranty. The equipment with associated controls/instrumentation is to be guaranteed for stipulated performance for 18 month after commissioning. The equipment supplied shall be warranted from defects, manufacturer and performance for the said period and cover all the defects arising from malfunction
27 through design faults, inappropriate material, bad production and nonconformance to specifications. Any expense because of repairs/supply of spares against guarantee defects is to be borne by the supplier.