| ( COOL – DOWN)THE FIRE , THIS SYS. TO BE CONNECTED TO THE EXISTING FIXED INSTALLATION OF SOC TANK FARM AREA - THE SUPPLIER SHOULD DESIGN AND CONSTRUCT THE REQUIRED SYS.ACC. TO (NFPA-11-79) WHERE THE FOAM TYPE IN USE IS LOW – EXPANSION FLOUROPROTEN FOAM - THE SUPPLIER TO INSTALL SUITABLE NO. OF FOAM PURER UNIT OF TOP – ROOF APPLICATION SYS. ( TPS) WITH ( ANUMBER & CAPACITY ) ACCORDING TO RIM SEAL AREA WITH A RATE OF ( 12.3 LIT/MIN/M2 OF RISK AREA) - THE PURERS TO BE FIXED IN SUCH AWAY TO ELAMINATE THE DEFLECTING EFFECT OF WIND DIVERSING THE FOAM POURING ACTION (SHELL SHELTER TO BE FIXED) . (6-15 ) REV.1 - THE SEGREGATING PROTECTION SEGMENT TO BE ESTIMATED ACCORDING TO (DAM) HIGH & EXTINGUSHING RATE ( ACC. NFPA . 11) - THE FOAM RISER OF A/M FOAM POURERS TO INCLUDE DRAIN VALVE NEAR GROUND LEVEL OF BASE SHLOUDER TO THE TANK . - THE POURERS TO PERFORM ITS DESIGN RATE AT (6-7) BAR OF FEED SOLUTION FORM THE EXISTING FOAM PROPORTIONATING BLADDER TANK IN SITE ( EXP. 7:1 OF 6% OR 3%) - THE SYS. MUST HAVE ELECTRICALLY OR PNUMATICALY ACTUATED B.F. VALVE CONNECTED TO THE TANK FEED LINE OF THE SYS. - THE A/M SYS. IN (A)&(B) TO BE SUPERVISED BY TWO SIMLLER CONTROL PANEL WITH SITE & LOCAL ANNUNCIATING SIREN AND SYS. STATUS DISPLAY FACILITIES ONE IN FIRE STATION & THE REPEATED ON IN (EXISISTING CONTROL ROOM ) - ALL ELECTRICALL & ELECTRONIC INSTALLTION TO BE ACC. TO (BASEFE) & (CENELIC) APPROVEL & (IP65) ENCLOSURES RATING . - THE MANUFACTURER (ANGUS FIRE , SILVANI (KIDDER) ) 4) INSTRUMENTATION PACKAGE FOR ( ONE ) FLOATING ROOF TANK (58,000) ALL NECESSARY INSTRUMENTS PACKAGE FOR PROPER OPERATION TO BE PROVIDED AND SHALL BE INCLUDE THE FOLLWING :- - TANK GAUGING RADAR SYSTEM WITH LOCAL AND REMOTE INDICATE WITH ALL ACC. INCLUDING THE REMOTE TEMPERATURE INDICATOR (EX PROOF). - LEVEL SWITCHES (LL,L,H,HH) SID MOUNTED WITH ALL ACC. - ALL J.B’S FOR INSTRUMENT . - CONTROL PANEL WALL MOUNTED LOCATED INDOOR TO COVER BOTH TANKS INSTRUMENTS TOGETHER , TO INCLUDE :- * TANK GAUGING REMOTE INSTRUMENTS & PRINTER . * ANNUNCIATOR (24) WINDOWS FOR ALARM & S/D WITH HORN . * ALL REQURED RELAYS, TERMINAL STRIP , WIRING WITH ADDITIONAL BOOSTER PUMP. POWER SUPPLY 220 AC/110 VAC INPUT – TO 24 VDC. * ALL PANEL INST. TO BE WORK WITH 24 VDC . (7-15 ) REV.1 SYSTEM FEATURES : THE REQUIRED TANK GAUGING SYSTEM SHOULD INCLUDE THE FOLLOWING FEATURES OR ITS EQUIVALENT . DIGITAL MICROWAVE TANK GAUGE FOR CONTINOUS AND NON-CONTACT PRECESSION LEVEL MEASUREMENTS FOR CUSTODY TRANSFER AND INVENTORY CONTROL APPLICATIONS . * ? 1 MM LEVEL ACCURACY FMCW RANGE MEASUREMENT * DSP DATA EXTRACTION VIA DUAL FFT ALGORITHM * GRAPHICAL DISPLAY PANEL WITH VIEW SELECT * INTEGRATED TEMPERATURE PROBE INTERFACE ? 0.1?C * WATER LEVEL AND DENSITY INPUTS * INTEGRATED GRAPHICAL DISPLAY * TANK SIDE REMOTE DISPLAY * 4-WIRE COMBINED POWER & COMMUNICATION CABLING * COMPATIBLE WITH NT 5000 TANK GAUGING SYSTEM (OR ANY EQUIVALENT) AND OTHER HOST SYSTEMS . * SIMPLE COM MISSING & MAINTENANCE THROUGH DIAGNOSTIC INTERFACE TOOL . * COLAMNATED HORN * GAS TIGHT PROCESS CONNECTION RATED TO 40 BAR - SPECIFICATIONS HIGH ACCURACY MICROWAVE TANK GAUGE SUPPORTING NON-INTRUSIVE FMCW RADAR LEVEL DETECTION WITH AUXILIARY INPUTS FOR TEMPERATURE , DENSITY & WATER INTERFACE . LEVEL ACCURACY : ? 1 MM WORKING PRESSURE : UPTO 40 BAR MAX. LEVEL MEASURING RANGE : (0-40) METERS TEMPERATURE ACCURACY : ? 0.1 ?C TEMPERATURE MEASURING : - 50 ?C TO + 200 ?C POWER SUPPLY : STANDARD 24 VDC TEMPERATURE : 20 RTD INPUTS FROM SPOT/MULTIPLE , AVERAGING /MULTIPLE , SPOT PROBE , CU OR PT ELEMENTS INTEGRAL DISPLAY : ILLUMINATED GRAPHICS DISPLAY PANEL WITH SELECTABLE DISPLAY - MANUFACTURER : ENRAF , SAAB , MOTHERWELLCONTROLSYSTEMS OR EQUIVALENT - ALL ABOVE INST. TO BE ACCORDING TO API STANDARD & FIELD INSTRUMENTS SUITABLE FOR HAZARDOUS AREA CLASS C (8-15 ) REV.1 5) ELCTRICAL SYSTEM:- CATHODIC PROTECTION SYSTEM BASIC DESIGN CONDITION 1. EXTERNAL CONDITION OF TANK BOTTOM PLATE: BARE ON OIL SAND FOUNDATION. 2. PROTECTIVE MEAN CURRENT DENSITY: 3. SOIL RESISTIVITY: (310 Ω.m) 4. ANODE DESIGN LIFE: 25 YEAR 5. POTENTIAL DIFFERENCE BETWEEN TANK BOTTOM PLATE AND ZINC REFERENCE ELECTRODE (T/Zn) SHALL BE MORE THAN ( + 0.2 ) . 6. COPPER GROUNDING FACILITY : GROUNDING ROD/PLATE SHOULD BE GALVANIZED. 7. ISOLATION: THE TANK TO BE PROTECTED SHALL ELECTRICALLY BE ISOLATED FROM OTHER METALIC STRUCTURES THAT ARE NOT INTENDED AS A PART OF THE PROTECTION SUCH AS ABOVE-GROUND PIPING AND COPPER GROUNDING ROD/PLATE.( SUPPLIED ALL SUITABLE INSULATING FLANGES ) . 8. REFERENCE ELECTROD : THE ZINC REFERENCE ELECTRODE FOR CHECKING THE POTENTIAL OF THE TANK BOTTOM PLATE SHALL BE SET IN THE TANK FOUNDATION . 9. TEST STATION : IN ORDER TO FACILITATE THE CONFIRMATION OF THE PROTECTIV EFFECTS , THE TEST STATION BOX SHALL BE INSTALLED AT AROUND THE TANK. INTERNAL CATHODIC PROTECTION: THIS SYSTEM SHALL BE DESIGN BY SUPPLIER. (LIST OF REQUIRED MATERIAL, QUANTITTY), CATALOGUES, DRAWING AND OTHER SPECIFICATION SHOULD BE SUBMETTED BY SUPPLIER. THE TABLE BELOW SHOWS SOME REQUIRED MATERIAL, AND THE SUPPLIER SHOULD BE FOLLOWING IT AFTER MAKE HIS CALCULATION: Internal Cathodic Protection for each tank: Other specification Tank diameter By supplier m Assumed salty water height 1.5 m Assumed salty water resistivity 100 Ohm.cm Cathodic area ( bottom+h=1m) By supplier m2 Current density By supplier mA/m2 Total current requirement By supplier mA Anode type Al - In Anode weight By supplier kg Anode resistance By supplier ohm Anode current By supplier mA Anode dimension By supplier mm Min. Anode number By supplier Set Required anode number By supplier Set Cathodic protection design life 25 YEAR Ring number By supplier Anode per each ring By supplier Set Anode installation plate& galvanized bolt, nuts. By supplier Set (9-15 ) REV.1 EXTERNAL CATHODIC PROTECTION: THIS SYSTEM SHALL BE DESIGN BY SUPPLIER. (LIST OF REQUIRED MATERIAL, QUANTITTY), CATALOGUES, DRAWING AND OTHER SPECIFICATION SHOULD BE SUBMETTED BY SUPPLIER. THE TABLE BELOW SHOWS SOME REQUIRED MATERIAL, AND THE SUPPLIER SHOULD BE FOLLOWING IT AFTER MAKE HIS CALCULATION: External Cathodic Protection for each tank: QTY U Other specification Transformer unit ? (50V/100A) ? Manual Oil cooled ? Input voltage 220V AC ? 50 HZ ? Ambient temperature 60°C ? IP 55 ? CU/CU Winding ? Location/Out of Ex-proof area ? Surge protection ? Oil level/ Temperature indication ? Silica gel breathe 1 No. Control panel ( Analogue) 1 No. Tubular Mixed Metal Oxide Anode (MMO) string comprising 5 No. ( ?25 x 1000 ) mm anode at 1 meter spacing between anodes on 50 meter length 50mm2 XLPE/PVC cable fitted to 4mm dia 6x7 wse GAL rope covered to 5mm dia with PVC coating X50 meter length . ( life time 25 year) By supplier Set Permanent ref. Electrode(zinc) By supplier Set Splice Kit By supplier Set 1 inch or more Galvanized pipe By supplier m 2 inch Hard pvc pipe By supplier m Galvanized connection plate By supplier Set Calcined petroleum coke By supplier kg XLPE/PVC/SWA/PVC 1C x 50mm2 cable(-) By supplier m XLPE/PVC/SWA/PVC 1C x 50mm2 cable(+) By supplier m 4 x 2.5 mm2 Coaxial cable By supplier m Portable Ref. Electrode ( Cu/CuSo4 ) By supplier Set Cooling oil By supplier kg Bolt & Nut By supplier Set Epoxy resin By supplier kg XLPE/PVC/SWA/PVC 3C x 50mm2 1000 m Spare parts for 5 years By supplier Set Insulation kit for each input/output piping and nozzles By supplier kit EARTHING SYSTEM ? General earthing resistance shall be less than 1Ω at any point even at worst condition and for lightning less than 7 Ω. ? Main loop grounding conductor shall be bare stranded copper core, having min. 95mm2 cross section. Shall be choice after earthing system calculation. ? The rod shall have 20 mm nominal diameter and 2000 mm length. THIS SYSTEM SHALL BE DESIGN BY SUPPLIER. (LIST OF REQUIRED MATERIAL, QUANTITTY), CATALOGUES, DRAWING AND OTHER SPECIFICATION SHOULD BE SUBMETTED BY SUPPLIER. THE TABLE BELOW SHOWS SOME REQUIRED MATERIAL, AND THE SUPPLIER SHOULD BE FOLLOWING IT AFTER MAKE HIS CALCULATION: Earthing system for each tank QTY U Other specification Soled Copper galvanized earth rod (?20 x 2000 mm). the total nos. of earthing rods should be quite enough to achieave the earth resistance to |
|
|
|
|
|
|
