Main keywords for this article are Cathodic Protection Installation Details, How to Install Cathodic Protection on Pipelines, Cathodic Protection Test Station Installation, Cathodic Protection Test Station Spacing, Cathodic Protection Design.
CATHODIC PROTECTION INSTALLATION DETAILS
CATHODIC PROTECTION JUNCTION BOX AT ABOVEGROUND TANK – CLASS1, DIVISION2 OR UNCLASSIFIED
PIPING GALVANIC CATHODIC PROTECTION SYSTEM
NOTES:
1. EXOTHERMIC WELDS TO PROCESS PIPE SHALL HAVE MINIMUM 305mm SEPARATION.
2. QUANTITY OF ANODES AND LONGITUDINAL SPACING WILL VARY ACCORDING TO THE SPECIFIC INSTALLATION.
3. TYPICAL DEPTH OF ANODE HOLE SHALL BE 1500mm BELOW BOTTOM OF PROCESS PIPE, AND SHALL BE LOCATED 1500mm FROM CENTERLINE OF PIPE. HOLE SHALL BE BACKFILLED WITH SIFTED NATIVE SOIL. A MARKER BLOCK SHALL BE INSTALLED AT GRADE, ABOVE EACH ANODE.
DIRECT BURAIL SPLICE HEADER CABLE TO C.P. ANODE LEAD
NOTES:
1. TAPE CONNECTION WITH RUBBER ELECTRICAL TAPE (HALF-LAP, 2 COURSES).
2. TAPE CONNECTION WITH VINYL ELECTRICAL TAPE (HALF-LAP, 2 COURSES).
3. AFTER TAPE, APPLY 3M SCOTCHKOTE ELECTRICAL COATING ENSURING ENTIRE CONNECTION IS THOROUGHLY COATED.
EXOTHERMIC WELD TO PIPE PROCESS
NOTES:
1. CLEAN PIPE TO BRIGHT METAL PRIOR TO WELDING.
2. EXOTHERMIC WELD TO BE CADWELD. USE MANUFACTURER’S RECOMENDED THERMIT ALLOY SUITABLE FOR THE PIPING MATERIAL.
3. INSPECT WELD PER MANUFACTURER’S RECOMENDATIONS. COAT WELD WITH PRIMER AND INSULATING COMPOUND. PRIOR TO PRIMING EXPOSED AREA, CLEAN SUBSTRATE TO BRIGHT METAL.
4. AFTER COMPLETE CURING OF INSULATING COMPOUND, CONDUCT HOLIDAY DETECTION TEST AND REPAIR AS REQUIRED.
CATHODIC PROTECTION TEST STATION AND JUMPER IMPRESSED CURRENT C.P. SYSTEM
NOTES:
1. TEST STATIONS SHALL BE LOCATED TO AVOID DAMAGE FROM PEDESTRIAN OR VEHICULAR TRAFFIC.
2. ALL BURIED METALLIC STRUCTURES (SUCH AS PIPE ANCHORS) THAT ARE ELECTRICALLY CONNECTED TO BURIED COATED PIPE, SHALL BE COATED IN ACCORDANCE WITH THE PIPE COATING SPECIFICATION.
3. MULTIPLE WIRE CONNECTIONS TO THE PIPE SHALL BE SPACED A MINIMUM OF 305mm APART.
IMPRESSED CURRENT SYSTEM CATHODIC PROTECTION, ABOVEGROUND TANK BOTTOM USING MIXED METAL OXIDE (MMO) ANODES
NOTES:
1. QUANTITY OF PERMANENT REFERENCE ELECTRODES IS DIRECTLY PROPORTIONAL TO TANK DIAMETER. MINIMUM IS ONE, PLACED AT THE CENTRE OF SMALL TANKS. AS MANY AS FIVE MAY BE REQUIRED ON LARGE TANKS.
2. ANODE LOOPS ARE FACTORY ASSEMBLED FOR THE SPECIFIC TANK SYSTEM.
CATHODIC PROTECTION JUNCTION BOX CLASS1, DIVISION2 OR UNCLASSIFIED FOR U/G PROCESS PIPING
CATHODIC PROTECTION 30 Amp GROUNDBED
CP COUPON MONITORING STATION
NOTES:
1. SOIL TO BE IN FULL CONTACT WITH THE COUPONS.
SOIL IN CONTACT WITH THE COUPONS SHALL BE THE SAME AS THAT IN CONTACT WITH THE PIPE. FOR SHOT ROCK DITCH INSTALLATIONS, INSTALL THE COUPON WITHIN THE DITCH.
2. ATTACH LABEL TO THE OUTER TUBE “CP COUPON MONITORING STATION”, LOCATION, SURVEY STATIONING NUMBER AND YEAR INSTALLED.
We discussed main keywords for this article are Cathodic Protection Installation Details, How to Install Cathodic Protection on Pipelines, Cathodic Protection Test Station Installation, Cathodic Protection Test Station Spacing, Cathodic Protection Design.