Cathodic Protection System - Sewer Rising Main - OM Manual

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OPERATINGMANi7AL FOR:

Ptïsd(07Y340311849= Fr.. (07).3403; 1898;

20th. June:199T.

EDMONSTONE STREET RISING SEWER MAIN

CATHODIC PROTECTION SYSTEM

CLIENT:

BRISBANE: WATER SEWERAGE UTILITIES SERVICES

Cathodic Protection System - Edmonstone Street - Sewer Rising Main - OM Manual

Q-Pulse Id TMS1259 Active 21/07/2015 Page 1 of 24

(T.0) Tntroduction:. -

(2:0) Corrosion andCathòdiaPïrotectiórr= (3:0) Máiñs-Details: (4:0) CathodiePiotectión (4:1) , Tÿpec;ofSÿstém- (4:2) Réctifiéì:' (43) -. Cátliödés ... (4.4) -sÁñódés- (4'.5) Test Points, (+-6): Associated Drawings (4: Associated .Standards

Government: Regulations PeförmedTesting. Conclüsión Maintenance:

DRAWINGS

48676725- AA1C0021E Standard Rectifier Wiring:Diagram

(No Number) Monthly Maintenance Program.



Steel when_inimeised'_ or covered. in; water -hasp a*.tend:éiïcyto: corrode (ór rust). as, the Oxidized.- .

''foimyrs =móre: stabléäthai tl e: metal

Because. of thïs, precaution- must be takes to stoFFor ruin mile: .the° corrosion- reaction-. to air acceptable lévitconsistent.witli the:-dés g-. lifét of the sfruttare:. This is- normally- achieved by

-_theuse.ofprotectivecoating iwwlücli .control_ the corrosion -reáctiönby isolatingthe :steelfrom° itssurroundii en .'' e-

However ,.itis -not racticâlxt&achieve a perfect coatingandcoatingdamage.will: always occur with tune: Because:oftnis,. Corrosion-may occur atimperfectionsn the.:paintcoating,_ causing : further deteribi=àtton; iítthe_ coating as well as loss of metal..

this;.. the. coating defects- must be. rectified: by, perfodïc: maintenance. or an . t oc of protection.used:to prevent:this deterioration: and corrosion_ occurring:: This tionallprotectiön_is achievedby the cathodic_ protection° system:..:

0) - CORROSIONpAND- CATHODIC' PROTECTION;

rrosiorris:an°_elèctrochemical processin thatitis.accompaniëdby a.-flöw:ofeIectrical current..

Corrosion'. occurs :: on: the surface of metals- at: actives areas known: as anodes;. which:: are electrically continuous with less active orpassive areas known as Cathodes. The electric current flows :- fromahe' anodethrough.the:electrolyte to the: cathode _ with .the:ciicuitbeing.completed: by- the electrical. continuity between the: cathode: and anode:_ Ii practice:: anodes-and. cathodes are generally part of the. same: metallic: surface: and: individual anodic; areas -may be: small..

lï applying-cathodic protection and external current is applied to the surface so that the entire surface to beprotected acts as a cathode. This involves the use_ of an- auxiliary anode and when the current flow from this anode is sufficient, no part of the. structure. acts as an anode-.

An external source of direct current such as a transformer rectifier is used in conjunction with an anode consisting.of material with a very slow corrosion rate.

While it is the flow of current which achieves the cathodic protection of the surface it is impractical to measure these currents over individual anodic areas to determine when cathodic protection has been achieved. However, with the flow of cathodic protection current, the structure becomes more negative with respect to the surrounding electrolyte. Because of this, it is possible to state values of metal/electrolyte potential at which corrosion does not occur. This metal/electrolyte potential is generally measured against a standard reference electrode which allows a reproducible potential at which corrosion does not occur to be quoted.



Coating:-

Length:

Location:

Dia:600'mnt mildsteelL.

Ta.r Epoxy.'

0.8-1nr

FrontEdinonstone:St Pump.Stir to-cnrVálek.Olney-Sts:

Ctonstruction -, _3667/600 Breakfast Ck Diversion Sewer _ Drawings:



CATHODI C°PROTECTION MICAIP:& -

of r Cäthôdic Protection= I'mpresseaC'urrent.:

Rectifier. Speciá132 Volt;, 103amp: direct:currennoutput.enclosed.m stainless. steel has a. 24-0V-supply front the nearby Sandgate -Rd. Sübmersibl Sewerage: Pùmpiñg Station_ S P: 23= _.

Cáthodê:t` Th cathode° point: is- located: in they valve pit adjacent: to the pump statforTfie: cathode point is where the cabling.front the rectifier is attached. to- thmstructureunder. cathodic: protection.

(46)

(4.7)

odes:: Tho ,1500 x; 75inm silicone. iron: anodes were' iñstalled 1.5' meters. in front: ofthegateandthe second .anode 4- meters. in:fr ont :of that,;. fit a:vertical_bed:. Theanodes were firstly packaged with.. cokebreeze.theteby 1improvinganode-- ground resitance:. The anodes areidentiñed.byy a.- markerpost: and:label:

Test Póints:: Test -points are: installed: on: cathodically :- protected. structures; to . _enable; testing-,to. ensure : . full. protection. of: the: mains:- On_these: mains- three test poiñts haves been_ installed: fir- details see dWgl.no.3007/600 Breakfasts Creek: .

Diversion Sewer._

Associated Drawings:: Càthodic :Protection Details - 2714:2137: Cathodic-Protection Test-Point Details - 486/1/22 AA1.T0001E Standard. Rectifier Wiring Diagram - 486/6/25=AA1C0021E Vertical Ground bed Details - 486/6/25=AA1C0024E

Associated Standards: AS 3000 1986 Australia Wiring Rules AS 2832.1 1985 Pipes, Cables, Ducts, Guide to Cathodic Protection,

Part One.

(4.8) Government Regulations: Queensland Electricity Acts and Regulations.



(3) Soil Resitancerestiiig-._

(4)- einTentDi-ain-Surver.

.-.:..,?105'CoiatingAnomaly Survey:.

.(6)i - Rectifier Loop-Resistance:.

_ .

Foreign StructurezInterference:Survi.yand_Mitigation...

FinarP_oténtial Survey and:CbinmEssfoningi.

(6.0) CONCLUSION

Full Cathodfc:protection- has been. achieve& on thi section: of. trunk: mains. The: cathodic: protection: system- is registere'd: with the: Electricity Regulator Department of:Minerals and. Energy andlas .approval.to operate:

(7:0) .MAINTENANCE

The cathodic protection system is maintained on a monthly basis after commissioning. These checks involve testing rectifier operation and recording of pipe to soil potentials.



BlèctricaL Engiñeering;.Unit (:atliodic P'rotectiòlr.

CP&Mönthly Maintenance Details:.

Required::

u Notify plant: opérátótánd/or. signe entry logs where: necessary:. 2/ Have approp faterkëÿiig..

ertrádésperson;_oneevehicle:. 20 minutes per site..

öcédüre :-

Tdèntifÿ installation:. Z!' Check:sy-stem;för. operation.. 3/ R'ecord:voltmeter..

Record ammeter._ 51 Comments. 6/ Log entry..



-20t1Tun1997;.. ElëctricaLEhgiñeerimg;iliiit Cathodic Erotectiòm

CPS =6:Mönthlÿ: Màihtenancer Details':.

Requiredi:

u Notif'y,--ptant:operatoañd/orsign entry logswhere:necessary:. :.<..-

2/. Have appropriáte:keyïngr. 3/ S"et:oftools: (F1'èctricïáns) 4/` Mültiméfé'r_':_ ' S/: DCwclänipmeter.; . ,V40.1T--

4 pgersulphater reférence: cell' and. leads:. ._ eamng;equipment:. aticcover.-lifters:

Labour:

One: tradesperson.elëctrical,. one. laborer; one: vehicle:. Tvvo- hours5per..site:_

Procedure:..

1/ Identifÿ system. 2/ Check system for operation.' 3/ Record voltmeter. 4/ Record. ammeter. 5/ Record "on" potentials for all test points. 6/ Record. "instant off" potentials for all test points. 7/ Record "off" potentials for all test points. 8/ Perform loop resistance and record. 9/ Check and record anode string currents. 10/ Comments. 11/ Log entry.



ZQAliTuñe.1997;. Electrice E"ngiñeering Unit: Càthodic P'rote ctiótL

CPS=60-MònthlÿMàiñtenance: Détails:_

Required:-,

1! Notify plant: operatorandlor= sign entry logs where. necessary: 2J Hàve appropriate:ltéyiñg: 37 Set_oftoo1'sr.. (El'éctriián_ s) 4/ Múltimetez:z 51' DC elámQmeter.. :.

Cöiesulpliate;reference: cell, ánd:leads.. ;--- t - eamng;equipment:. ccoverlifters.

"ectifier_ Tóad:bank:. l'07.PCS2000 Detectión.Equipment:.

,Labour:

. _. One: tradesperson .electrical,_one:laborer; one vehicle. Eight hours per site.

Pìocedure:.

1/ Identify system. 2/ Check system for operation. 3/ Record voltmeter. 4/ Record. ammeter: 5/ Record "on" potentials for all test points. 6/ Record "instant off" potentials for all test points. 7/ Record "off" potentials for all test points. 8/ Perform loop resistance and record. 9/ Check and record anode string currents. 10/ Load test rectifier for 10 minutes. 11/ Check all switchboard and testpoint terminals for tightness. 12/ Check all switchboard and testpoints are labelled and I.D. tags attached. 13/ Check plans are correctly drawn and modify if necessary. 14/ Remove and inspect anodes. 15/ Recheck all interference (CPS) bleeds. 16/ Pipecamp structure if applicable. 17/ Apply to reregister system, if applicable.



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COMMENTS./ LOCATION DRAWING'

INSTALLED BY P Ç(1( 1d

Revision 09/28/95



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Revision 09/28/95



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RESISTIVITY

RESISTIVITY

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Revision 09/28/95=



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DESCRIPTiONF .

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INS.ULATION:CHECKER,MO:DEL-702:-

POTENTIAL DIFFERENCETO REFERENCE'CELL.

PROTECTED SIDE UNPROTECTED- SIDE:.

ABOVE"TESTING

BOLT TO FLANGE RESISTANCE: NUMBER OFBOLTS: FLANGETO FLANGE - RESISTANCE:


5-6 MA/

LO O,IL cÀ'-g-r

TESTED: BY 6. FR,q

Revision 09/28/95-



Brisbane Wa.ter. Engin:epring

ElëctricalEngiñeeriñq Uñi : .. . :.. .

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DESCRIPTIONi

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IN+GROUND:'TESTING .

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BOLTTO'FLANGE RESISTANCE :

NUMBER'.OFBOLT FLANGETOTLANGE RESISTANCE INSULATIONZHECKER: MODEL 702:

POTENTIAL DIFFERENCE TO REFERENCE CELL:

PROTECTED SIDE: UNPROTECTED SIDE:

ABOVE-TESTING

BOLT TO FLANGE RESISTANCE: ó ' M 0 NUMBER OF BOLTS: ó

FLANGE-TO FLANGE RESISTANCE: / (, o ,ì COMMENTS / LOCATION DRAWING

TESTED BY 6. Pe Ari,

Revision 09/28/95



errs-bane. Wate r° Engineering- Se rzir:é: _.,%:

Erèctrical Engürìeérüim Unit

Insulátéd.lóintTestihg Détáii Eärir>:

CP'FbmrNo: 2.1

Project r ModSTO Sr" Data i7-- -9T

DESCRIPTION..-

Mio'tIIVSDETAILS::: C'.p Hod 6-roe - VT- ' QeATTONS:. .A 140 IV 57-0A/E-. 61- VAL cs Prr IZE.`: -- -

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COATING:: j(/. i c.. .

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IN=GROUNIXTESTING=

BOLTM FLANGERESISTANCE_ NUMBERfOFBOLT:` FLANGETO FLANGERESISTANCE: INSULATION CHECKER' MODEL702::

POTENTIAL DIFFERENCE-TO REFERENCECELL:-

PROTECTED-SIDE UNPROTECTED SIDE

ABOVE:TESTING

I BOLT TO FLANGE - RESISTANCE: 2i. ' ' M Iv NUMBER OF BOLTS: t FLANGE TO FLANGE RESISTANCE: l 6, O s/


TESTED BY PRA

Revision 09/28/95



B'rfsbaneVVater EnarneerrngSerirce

EléctricaliEngiheerinmUnit

Cathodic Protection System- Potential: Recording, Form:

CP- Form- No: 23'

Project Edmonstone.St-Rising.Main Date?. 20th. June199T

Test Point number

.

Distances. to T:P.

Potentials to CuSO4 -- Resistivities-. atZ metres: Natural Off- Orr

(metres) (mV) (mV) (mV) (ohm:metres) 1 0 -499 -730 -1150 16.3 2 300 -491 -790 -1200. 18.8 3 800. -465 -715 -1155 175 4.

5.

6 7 8 ' 9.

10 1t 12 13'

14

Graph of potentials and resistivity vs pipelength

E

co

o

o

-500

-1000

-1500

-2000

500

400

300

200

100

o

A A

61

o 300

Distance (metres) 800

Natural G Off * Rectifier located

Revision 06/30/97



Brisbane. Water Eflg,i veering# S'er vices-

Electrical '. Engineering: Unit:

Cathodic Protection System Loop-Resistance-

CP Form No: 24-

Date: 20th JUNE.1997' Cathodic. Protection System:. Edmonstone. St. Rising Main New Market System Operating; Volts 6' System Operating amps 2

14

12

10

8

> m rn co ..

> 6

4

2

o

Loop Resistance. (ohms)

3.111111

Graph of System voltage vs current.

o 2 3

Current (amps) 4 5

06/30/97 LPESTONE.WK4



B r ni e .IPC Er

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ñlijéct:RCóatiñgdéfect:survey fór. Edmonstone°.St:risingsewer_maül:. _. .

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:,;_.. aEi`"ecá'°"cà¿tMéclian1caLa=Water. Mé'tersi

=4* .TBimáS'trcétagierFar..Q4009= .

. : - . _

Pira. (07) ,3403:41849=

Fr-(07),34011898;

Equipment-used :: Pipecamp PCS -2000 coating anomaly_ equipment:.

Length -.Of Mains: Aprox... 800 Metres.

Size.of mains: 680 mm. Dia mild steel cement lined.

Operator: John Taylor

Date of survey:- 4th, July 1997,

S th-Jùly.1997"

Procedure: Equipment was set up as per operation manual while operator traversed Pipeline route. Potentials were measured at each test point and no defects were. noted .

Evaluation: Over the length of the main no notable defects were found .

Conclusion: The coating is still of reasonable condition and no further action is needed other than the CP System.

John Taylor Electrical Engineering Unit.



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N O T E S

A

0 9.96 ISSUED FOR COMMENT I O.L.P.

No DATE ANENDNENT INITIALS

AMENDENT & ISSUE REGISTER

MANAGER

DATE

DIRECTOR DF DIRECTOR OF

PUNNING & DESIGN WATER SUPPLY

DIRECTOR OF

TECHNOLOGY SERVICES

DATE:

DATE:

DESIGN J.S.

DATE:

DIRECTOR OF

CONSTRICTION

DATE:

9.9.96 ENGINEER IN CHARGE

DRAWN O.L.P. 12.9.96 SUPERVISING ENGINEER

CHECKED A21 REDUCED

B

REFERMES

CARD FIE N0. 76T00060

C

D

COPYRIGHT ® 1996 No rspoduotion is permitted in whole or in pert without

the express consent of

THIS DRAWING WAS BRISBANE CITY COUNCIL

USING QI AW BRISBANE WATER

hVáter.hl Medmiumo lgft PROFESSIONAL SERVICES

PROJECT:

CATHODIC PROTECTION EDMONDSTONE STREET 680 DIA. RISING MAIN

TITLE:

CATHODIC PROTECTION SYSTEM DETAILS

SCALE: N.T.S. 1 No.1 OF 1 SHEETS

DRAWING No.

486/7/6- MO1T00060

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VARISTOR

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R1 51

R2 R3 .4=3-7-c=

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TRAIISFDRMER OUTPUT CURRENT & VOLTAGE

TO SUIT APPLICATION PROVIDING SUITABLE

REV- _UTiDN & CONTROL

AMMETER & VOLTMETER TD PROVIDE

SUITABLE RESOLUTION FOR SYSTEM

+ POSITIVE WIRING TO BE RED

- NEGATIVE WIRING TO BE BLACK

L.V. AC WIRING TO BE 4nn2 BLUE /WHITE DC WIRING TO BE 4nn2 240V AC WIRING TO 3E 1.5nn2- BROWN /BLACK REM. 2ENCE WIRING TO 3E 1.5nn2 -GREY

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92.R3 - VOLTAGE DIVIDER (SIZED TO PRODUCE A VOLTAGE OF 10V ACROSS R2 AT MAX. OUTPUT VOLTAGE)

VE AND -VE DC FUSES TO BE SIZED APPROX. 5AMPS ABOVE NORMAL OUTPUT. CURRENT

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A I R.L. 118.10.931 CHANGtS AS SHOWN

0 I R.L. 125.8.53 ISSUE? FOR CONSTRUCTION

Ka I BY I DATE REVISION

1

ICHECil APPR IcazzI .':

B :1SBANL_ CITY COUNCIL

DEPARTMENT GF WATER ER SUPPLY _& SEWERAGE

MECHrNICIL ô _-_..Tr,:CA.L SERVICES

POD-T .7 .- STANDARD CATHODIC PROTECTION

T:ST POINT TERMINALS FOR REMOTE RECTIFIER SITES

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DRAWN R.L. I 3.8..S.î I SUPER ENG. I

DESIGN I JS, 1 3.8.93 I SENIOR. ENG.

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Documents

Cathodic Protection System - Sewer Rising Main - OM Manual