STATEMENT OF TECHNICAL REQUIREMENTS

FOR

STAND ALONE FLOOD ALARM SYSTEM

EED 50­19 

Dec 06

M A T E R I A L   B R A N C HI N T E G R A T E D   H E A D Q U A R T E R S

M O D ( N A V Y )‘D’ WING, SENA BHAWAN

N E W   D E L H I   1 1 0 0 1 1

I. AMENDMENT RECORD

Amendment No. Date Text Affected Signature/DateNILNIL

II. REVISION NOTE

No revision incorporated. 

III. HISTORICAL RECORD

This standard supersedes the following: ­ NIL. 

CONTENTS

Sl No Description Page No1 Introduction. 12 System Configuration 13 System Design 24 Rectifier Tests 2 to 35 Technical Specifications 3 to 76 Duty Cycle 77 System Performance 7 to 88 Quality Assurance, Quality control and Inspection 89 EMI/EMC Specifications 810 Naval Specifications 811 Maintenance 812 Equipment spares 813 Documentation 8 to 914 Weight and dimensions 915 Warranty 916 Technical Services 917 Training 1018 Repairs 10

STATEMENT OF TECHNICAL REQUIREMENT STAND ALONE FLOOD ALARM SYSTEM

1. Purpose. The flood alarm sensor of a ship borne flood alarm system is required to send a signal to a Flood Alarm Control panel in the Machinery Control Room (MCR) indicating either presence or absence of water in the ship’s spaces. The flooding sensors are fitted in various below waterline machinery compartments onboard the ship. These flood alarm 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

2. Operation. The flood alarm sensors energise when the water level increases beyond a pre-determined level and de-energize when the waterfalls below the predetermined level both causing indicators, fitted on the main flooding indication panel in the MCR, to illuminate/switch off. The information, pertaining to the flooding of dry compartments, is also transmitted from the sensors to the secondary flood alarm panels /repeaters installed closer to the compartments in which the sensors are installed. The information may be also transmitted directly from the main flood control panel to the secondary flood alarm panels/repeaters.

3. Scope. This statement of requirement covers the manufacturing, testing and on-board commissioning of a stand alone Flooding Alarm system onboard IN ships. The design is to be catered for the most adverse of the environmental and electrical conditions.

4. Basic Specifications. The indication system is fed with 24-V DC from the lighting mains through step-down Transformer and rectifier. If the ship’s supply is disconnected/not available, the system is fed with DC supply from the storage battery.

5. The flooding indication system consists of the following components: -

(a) Main Flood Alarm Panel. The panel is used for indicating the presence of the emergency amount of water in dry spaces. It receives signal directly from the sensors or through JBs with amplifiers units. The alarm panel will provide the following:-

(i) The panel housing should conform to IP 55 for providing adequate protection against water ingress.

(ii) The push buttons and visual indicators will be through appropriate protections to prevent ingress of water/moisture

(iii) All cable entries will be through gasketed plug and have military grade connectors.

(iv) Fuses/MCCBs for protecting the circuits against short-circuit currents.

(v) Provision to switch on the power supply unit.

(vi) Provision for changing over the supply circuit of sensor to the storage battery when the main and reserve power supply is disconnected.

(vii) Provision for changing over the main flood alarm panel from main supply board to reserve supply board.

(viii) Indications for energisation status of main flooding indication.

(ix) The number of indicators will be as many as the number of compartments in which sensors are installed. These will flash on receipt of signal from the sensors (alarm stage).

(x) There will be buzzers for audio alarm. It should buzz a minimum of three times during the alarm stage and will be audible throughout the compartment despite the ambient noise while ship is sailing.

(xi) In no alarm state, all indications will be off, but power must glow.

(xii) Provision for ensuring that the system can be configured so as to have minimum false alarms during heavy sea due to bilges.

(vi) The circuitry is to be designed of low current consumption by use of LEDs.

(vii) Provision for checking circuit of sensors needs to be provided in simulated conditions.

(xi) Provision for switching on the alarm system of flooding of the compartments.

(xii) Provision for switching on an indication on the repeater flood alarm panel.

(xiv) Provision for accepting the alarm by a push button so that buzzer can be switched off and flashing stops. However, indication of water level rise is still available.

(b) Fixed Alarm Sensors, These will be as provided by the nominated firms to transmit a signal to the main control panel when the water level rises above a pre-determined level and is above the level for a pre-determined time. The sensors will be of robust construction and should be able to withstand the rigors of marine environment which includes vibrations, rusting etc. The sensors should provide very reliable operation usually faced with mechanical actuation and electrical systems caused by salt or oil accumulation. The sensors

will be provided with bracket for facilitating fitment in side the compartment and should have provision to avoid bimetallic corrosion. The qty of the sensors will be as required by the Indian Navy for a class of ship. The sensors will transmit signal of flooding to the secondary flood alarm panels and /or to the repeaters.

(c) Secondary Flood Alarm Panel/repeaters . These will accept and display alarms from one installed flooding sensor and will be installed in appropriate locations of the ship. The housing enclosure will be the same as the primary flood alarm panel. The information pertaining to the flooding of dry compartments is transmitted from the sensor/ primary flood alarm panel to the secondary flood alarm/repeaters. The alarm panel will provide all the functions as per para 5 (b) above

(d) Provision for Zones. The systems will be so configured so as to have flooding indication on the Main Control panel to indicate flooding in zone or in flooding in individual compartments as required for the class of ship.

(e) Slave Indications (Optional feature). The system may have a digital/LCD slave unit with suitable interface with the main flood alarm control panel to have a display at locations such as Ops Room and Bridge.

(f) Interface with Integrated Platform Management System (optional feature). Provision for feeding status and flooding information to an integrated Power management system, when installed subsequently, through a suitable interface.

6. Power Supply. The system power supply should be as per the power supply available onboard the ship for which system is being procured. All secondary supplies required for the operation of the system shall be derived by the equipment itself. The power supply to the main flood alarm panel and the secondary flood alarm power panel should be capable of being independently powered.

7. Isolation Transformers. These need to be supplied by the manufacturers, if required, to avoid possibility of power line conducted emission.

8. Seaway Conditions. The equipment shall be capable of efficient and unrestricted operation without any deviation from its normal operating parameters under the following seaway conditions: -

Roll : max. +30 with 10 sec periodPitch : max. +10 with 20 sec periodList : max. 20 from vertical (permanent)Trim: : max. 5

9. Environmental Conditions. The equipment offered for marine applications shall achieve specified output and function smoothly under tropical conditions. It shall withstand air contamination through oil, salt and other contaminants associated with the marine environment. The equipment shall be water drip proof as a minimum

requirement. The equipment shall operate under the following environmental conditions: -

S.NO. CONDITION NORMAL 1. Temperature: Storage

Operating0 to 70 C0 to 55 C

2. Relative Humidity at 35 C 100%

10. Type testing. Type testing will be in accordance with JSS-55555 (for shipborne equipment protected (class N1)

11. Construction of Panel . The panel is to be constructed out of 14 S.W.G mild steel, drip proof, bolted cover suitable for bulkhead mounting. Suitable earthing bolt is to be provided on either side of the panel.

12. Cable Glands and Identification. Cable glands should be as per DGS/EED/IV/1535/R6 and are to be provided at the bottom of the panel. The body of the gland should be made of mild steel and nut of brass. The terminals used are to be approved type, adequately spaced & clearly marked for ease of connection & inspection.

13. Internal Wiring and Components. Internal wiring is to be done by low fire hazard cable only. All components used shall be of approved type and interchangeable with similar equipment.

14. Painting. Admiralty Grey confirming to DGS-251.

15. Tally & Diagram plate. All tally and diagram plate shall be of aluminum oxidized. A diagram plate indicating the details of connection is to be provided/affixed rear to the opening cover of the NLOP. Size of tally plate and diagram plate and their letters shall confirm to specification NES 723. Input supply, current, weight, and make and make sr. no. year of manufacture should be indicated on tally.

16. 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) Overall dimensions and proposed fixing arrangement.

(c) Estimated total weight

(d) Wiring diagram, circuit, Control and protection system.

(e) Control and indication facility.

(f) 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) Maintenance space required for the equipment

17. Binding Drawing and Documents.

17.1 Binding Drawings. The following binding drawings are to be submitted to the Naval authority as stipulated in the order :-

(a) Overall dimensions of the equipment

(b) Installation arrangement and seating

(c) CG in all axis of the equipment

(d) Circuit diagram and terminal connection details

(e) Part identification list indicating description, qty, maker part No., material used, conforming specifications.

(f) List of tally plate.

(g) Notes for the equipment

(h) Cabling diagram

All the above information is required to be supplied in CD-ROM in Auto-CAD (DXF) format in soft copies.

Drawings for Approval.

The following drawings for items are to be submitted to Naval authority as stipulated in the order

(a) General arrangement drawing indicating overall dimensions, fixing details, weight, CGs of the items etc.

(b) Wiring/Circuit diagrams

(c) Bill of Material

(d) Cable and connection schedule to be provided in hard as well as in (EXEL format) Soft copies.

18.1 Documentation .

The following documentations (02 sets) are to be supplied along with the main equipment along with soft copies in CD ROM:-

Sl. Description

(i) Technical description including that at component level.

(ii) Operating Instruction Manual

(iii) Maintenance /repair instructions Manual along with drgs

(iv) Installation, STW and testing instructions/schedules

(v) Electrical spare parts catalogue and Tools Catalogue

(vi) Certified Test Report

(vii) Fault location procedures

(viii) QAP

(ix) List of OBS and B&D

(x) Performance fifures including MTBF and MTTR

(xi) Weight and dimensions of system

Testing.

19. Factory Acceptance Trial Report.

Supplier to provide Factory Acceptance Trial Reports along with inspection report.

20. Inspection and Acceptance Trials.

20.1 As per QAP. To be approved by DQAN

21. Installation, Commissioning and onboard Trials

21.1 Installation. By OEM / Navy as specified in the order.

21.2 Commissioning and onboard Trials. OEM is to forward trial schedule to ETMA for vetting. It will be approved by by IHQ MoD(N)/DEE. OEM will undertake the commissioning in presence of ETMA/ Ship staff. The spares used during commissioning is to be provided by OEM

22. Warranty.

22.1 The equipment with associated controls/instrumentation is to be guaranteed for stipulated performance for 18 month after commissioning and proving of system onboard. The equipment supplied shall be warranted from defects, manufacturer and performance for the said period and cover all the defects arising from malfunction through design faults, inappropriate material, bad production and non-conference to specifications. Any expense because of repairs/supply of spares against guarantee defects is to be borne by the supplier.

23. T&T Spares.

23.1 A set of T&T spares as recommended by Supplier is to be supplied along with main item.

24 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.

Spares

25. The onboard spares, base & depot spares and test equipment are 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 are to be supplied for onboard maintenance.

25.1 Onboard Spares (OBS). An itemised list of OBS, special tool and special test equipment, which will be supplied with the main equipment, are to be furnished separately from the main equipment in ILMS format. The OBS are to cater for all of the ships’ staff onboard maintenance routines and possible repair requirements. The OBS should cater for exploitation of the equipment for two years.

25.2 Five-Year Base & Depot Spares/Comprehensive Part Lists. Base spares recommendation is to cover maintenance/overhaul requirements for 5 years. Itemised list of B&D spares are to be forwarded in ILMS format.

25.3 Scope, modalities and pricing for long term supply of spares during the life of system and undertake to maintain the supply for atleast a period of 12 years.

26. Governing Specifications.

(a) BR-3021 - Shock Requirements(b) JS-55555 - Environmental test methods for electrical &

Electronic equipment(c) DGS/EED/VI/1535/RG- Cable Glands

(d) DGS-251 - Painting(e) NES-723 - Tally Plates(f) NES-501 (Sec 16) - Earthing(g) MIL STD-461C/E - EMI/EMC(h) NES-501 - General Application(j) NES-626 - Plant & Machinery(k) NES-507 - Material & finishes(l) NES-511 - Electrical Testing(m) NES-581 - Electronic components & practice

25. Packing.

25.1 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 “INSTALLATION SPARES” distinctly marked on each cases. The lists are to be attached to the cases.

26 System Performance Responsibility.

26.3 Supplier has to under take full responsibility for ensuring satisfactory performance of the system onboard ship.

27. Services Of Engineers.

27.1 Services of Engineers are to be made available for advice/assistance in connection with onboard installation, defect rectification, testing, tuning, setting to work presentation of HATS. And onboard commissioning of the equipment as and when required by yard /Navy. 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 testing/STW are to be brought by the service Engineers.

28. Training. Comprehensive training of personnel of the concerned ship is to be carried out by the supplier.

FLOOD ALARM SYSTEM – M/S ARIECKLE INDUSTRIES, MUMBAIINCAT CODES

SER ITEM CODE DESCRIPTION1 EA 5516B-MAP-12 Primary Alarm Annunciator2 EA-5516-SA-1 Secondary Alarm Annunciator3 EA- 5516-SFS-19 Single level floating sensors