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PUMP BUILDING <br />PLATINIZED ANODE <br />(TYP OF 10) <br />SEE DETAIL <br />EXTRA HANDHOLE <br />FOR MONITORING <br />(L0 <br />12" F <br />CP— <br />RING WALL <br />50' TANK SHELL <br />(3) INNER RING <br />ANODE HANDHOLES <br />ON 5' RADIUS <br />�v► <br />ANODE ACCESS HANDHOLES <br />(TYP OF 10) 2 <br />SEE DETAIL <br />CP -2 <br />(7) OUTER RING <br />ANODE HANOHOLES <br />ON 20' RADIUS <br />TANK HATCH <br />OR MANWAY <br />I i,• iII Aol <br />A <br />CP -1 <br />ANODE HEADER <br />CABLES <br />RECTIFIER MOUNTING <br />SEE DETAIL 1 <br />CP -1 <br />NOTES: <br />1. LOCATE FIRST HANDHOLE NEAR TANK HATCH, IF APPLICABLE. <br />2. AFTER CUTTING THE HANDHOLES IN THE ROOF, ALL BURRS & SHARP EDGES OF THE HOLES SHALL BE REMOVED BY GRINDING. <br />3. HOLES SHALL BE MOVED AS NECESSARY TO AVOID ROOF RAFTERS (MINIMUM 6" CLEARANCE). <br />4. ANODES SHALL HAVE MINIMUM 5' CLEARANCE FROM ANY ADJACENT ROOF SUPPORT COLUMNS. <br />PLAN SCHEMATIC — 50' DIA RESERVOIR <br />NOT TO SCALE <br />A SECTION A — 50' DIA RESERVOIR <br />CP -1 NOT TO SCALE <br />cERENCE ELECTRODE <br />SPENSION <br />DETAIL 1 <br />CP -2 <br />10' LONG <br />VIRE ANODE <br />'TYP OF 7) <br />)EE DETAIL J <br />CP -2 <br />)NDUIT ATTACHED TO TANK <br />51NG CLAMPS <br />ODDER NOT SHOWN) <br />AIR—COOLED RECTIFIER <br />SEE DETAIL 1 <br />CP -1 <br />uu� uuju-t REFERENCE <br />ELECTRODE <br />GENERAL NOTES: <br />1. THE CATHODIC PROTECTION SYSTEM FOR THE INTERIOR WALLS AND FLOOR OF THE <br />RESERVOIR SHALL CONSIST OF TEN (10) PLATINIZED NIOBIUM ANODES <br />SUSPENDED FROM THE ROOF OF THE TANK AND SHALL BE ENERGIZED BY A 20 VOLT, <br />5 AMP AIR—COOLED AUTOMATIC POTENTIAL CONTROL, "IR" DROP FREE RECTIFIER. <br />2. APPROXIMATE LOCATIONS OF INTERNAL ANODES AND THE RECTIFIER ARE INDICATED ON THE <br />CATHODIC PROTECTION PLAN VIEW. FINAL LOCATIONS OF THE ANODES AND THE RECTIFIER <br />CAN BE CHANGED AS REQUIRED, AFTER APPROVAL FROM THE ENGINEER. <br />3. THE Pt—Nb ANODES FOR THE ANODE RINGS ARE EACH 10—FEET LONG. <br />4. HOLES IN THE TANK <br />ROOF FOR <br />THE HANDHOLES <br />AND BOLT HOLES <br />SHALL BE <br />DRILLED OR CUT BY <br />THE TANK <br />ERECTOR PRIOR <br />TO PAINTING THE <br />TANK, <br />5. SEE PLAN FOR ADDITIONAL HANDHOLE NOTES. <br />SCHEMATIC — INTERNAL CATHODIC PROTECTION SYSTEM <br />NOT TO SCALE <br />MOUNT REC7 <br />AMP) ON 1 <br />STUDS WELD <br />GRADE <br />1" GALVANIZED STEEL CONDUIT <br />(1) #8 AWG/THHN ANODE HEADER CABLE (BLK) <br />(1) #8 AWG/THHN STRUCTURE CABLE (WHT) <br />0) W l) Amir /Tuuni ni iAi nnum inrno nAoi r <br />TO TANK <br />ROOF <br />i <br />i RECTIFIER MOUNTING <br />CP -1 NOT TO SCALE <br />AC <br />TICAL <br />OXIMATELY <br />BUILDING <br />W ,Z <br />�o <br />2 WW Q <br />CL <br />& <br />-�� <br />� O w <br />W O h h <br />O > C Q. j <br />v�zwa�c�o <br />0 <br />IL <br />U <br />W <br />w <br />w <br />CFP -41 <br />SHEET 1 OF 2 SHEETS <br />OM <br />S; J3tl * `'� <br />a <br />0 <br />co W <br />0 CL <br />� U <br />Z <br />ri <br />O <br />W <br />Z U <br />C1 W <br />2 J <br />41 Q <br />2 <br />4W- J <br />¢O <br />W CS U <br />� (Ui1 <br />O <br />F- <br />V <br />U <br />ui <br />1� <br />a <br />•4) <br />z <br />z <br />U' <br />O <br />z <br />W <br />_ <br />I• <br />O <br />^ <br />0 <br />U) <br />U <br />W <br />Q� <br />O <br />o <br />Z <br />� <br />0 <br />Z <br />U <br />W <br />• <br />c) <br />�oZ <br />cy) <br />oN <br />_j <br />Q <br />2 <br />CFP -41 <br />SHEET 1 OF 2 SHEETS <br />