SECTION: A-1 GROUND PATROL AND LEAK SURVEY INSPECTION … · 2010. 4. 23. · Pipeline Operation...

Pipeline Operation Manual 1 Rev-1

SECTION: A-1

GROUND PATROL AND LEAK SURVEY INSPECTION

A. FUNCTIONS AND OBJECTIVES: - To observe surface conditions on andadjacent to the right-of-way, indications of leaks, construction activity otherthan that performed by the Company, encroachments, and any otherfactors affecting the safety and operations of the pipeline. The patrolman isto pay attention to all cased railway and road crossings, rail and road bridgecrossings, and suspended crossings, which cannot be adequately observedby aerial patrol. All rail, road, bridge crossing and suspended crossings arelisted in attached Schedule A1-1 and cased crossings in Schedule A1-2.Any discoloration of vegetation on the right-of-way is to be thoroughlyinvestigated for the possibility of a leak.

B. REPORTING: - A detailed report of conditions observed is to be preparedby the patrolman on form OIP-1 and distributed to the base and H.Q.offices. This report shall also include a complete description of any leaksfound. Additionally, in accordance with the attached Schedule A1-3,specific reports of the installations listed are required on the datesmentioned.

C. SCOPE AND FREQUENCY OF PATROL: - This ground patrol (Physicallymotoring/walking down the pipeline) is to be regularly scheduled from eachPump Station at monthly intervals, to the extent possible, and at 6 monthlyintervals within each Pipeline Base to include 100% of all main line rights-of-way within the area of each Base. Additionally, all rail and road bridgecrossings and suspended crossings are to be separately inspectedquarterly.

D. RESPONSIBILITY: - The selection of qualified personnel to perform thisfunction and over-all administration of the patrol schedule and follow-up isthe responsibility of the Deputy Chief Engineer Pipeline (PipelineMaintenance). The sectional limits for physically carrying out the patrol andthe inspections is as per attached Schedule A1-4.

E. SPECIALISED LAND PATROL OF CONGESTED AREAS: - In certaincongested areas of abnormal construction activity, it may be necessary toestablish a frequent patrol schedule for protection of the Company'sfacilities. Due to the many variable conditions, the need for thesespecialised patrols becomes a matter of judgment, which is to be evaluatedby all field supervisory personnel, and recommendations in this regardshould be forwarded to Deputy Chief Engineer Pipeline (PipelineMaintenance).


SCHEDULE A1-1OIL INDIA PIPELINE

ROAD, RAIL AND SUSPENSION BRIDGES

Km. River Pipeline Bridge BridgeAuthority

MaintenanceBase

3.4874.7480.7410.70(fromRS-2)187.51

Burhi DehingDisangDikhuDhansiri

Dhansiri

MainlineMainlineMainlineBranchLine toNRLMainline

RailSuspensionSuspension

Rail

Road

C.E.N.F. Rly. Maligaon----C.E.N.F. Rly. Maligaon

Assam P.W.D.

PS 3PS 3PS 3PS 3PS 3

PS 3

351.34383.10424.80424.80445.80445.80453.60497.08497.10505.60505.60517.70526.10533.00545.90573.30590.00604.00612.00627.80631.30640.20649.50697.30

KopiliDigaruBrahmaputraBrahmaputraPuthimariPuthimariChaulkowaDhumarkijanDhumarkijanPallahPallahBekiBhaluka DobaManasAieChampamatiGourangGangiyaGarufellaHaruaphutaSankoshRaidok No. 2Raidok No. 1Torsa

MainlineMainlineMainlineLooplineMainlineLooplineMainlineMainlineLooplineMainlineLooplineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainline

RailRailRailRail

SuspensionSuspensionSuspension

RailSuspension

RailSuspension

RailRailRailRail

SuspensionSuspension

RailRailRailRailRailRailRail

C.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. Maligaon---------C.E.N.F. Rly. Maligaon---C.E.N.F. Rly. Maligaon---C.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. Maligaon------C.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. Maligaon

PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5

742.60755.00761.80767.80770.00783.00786.40791.40800.90827.40852.70856.70942.50951.101026.921116.00

DianaJaldhakaMurtiNeoraMalChelGishLishTistaMahananda No. 1Mahananda No. 2DonkMahananda No. 3ParmanKosiBuri Gandak

MainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainline

RailRailRailRailRailRoadRailRailRailRailRailRailRoad

SuspensionRailRail

C.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonPWD, WBC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. MaligaonC.E.N.F. Rly. Maligaon BiharR.M.D.---C.E.N.E. Rly.GorakhpurC.E.N.E. Rly. Gorakhpur

PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8


SCHEDULE A1-2

OIL INDIA PIPELINELIST OF CASED CROSSING

CROSSING TYPESL.NO. ROWK.M. M/L L/L

LOCATION MAINTBASE

1.002.505.207.2015.6021.6036.3046.6063.5078.1079.8080.2082.5089.80105.30107.50111.80114.10129.20132.90134.70136.70137.40143.70150.00158.90161.50164.60167.80172.20173.60180.90183.00183.90187.70187.80190.90192.50195.20201.10210.00218.10227.70228.60228.65235.30235.31235.70237.30244.30250.78250.80255.20260.40265.10

RoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRailRoadRoadRoadRoadRoadRoadRoadRoadRoadRail/RoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoad

Road

RoadRoadRoadRoadRoad

RoadRoad

RoadRoad

Road

RoadRoadRoad

RoadRoadRoadRail

Assam Gas Co. Rd.Digboi-NHK RoadPWD Road, NamrupSassoni-NHK RoadMoran NHK RoadMoran NHK RoadTrolley Line, NHKMoranhat OIL RoadSepon-Nagaland-Moranhat Rd.Karagnat-Disang River-Nazira-Sibsagar Rd.Simaluguri Moran Rly. LineSibsagar-Nazira RoadSibsagar-Nazira RoadNamti Chariali-Jaisagar Rd (Opposite. To RS-1)N.H. 37, AmguriN.H. 37, NahgaraTeck Tea Garden To Nh.37Village Rd To Nh.37 Near Teck MarketNH 37PS-3 RoadRail & Road Near Bhogdoi RiverJorhat Kokilamukh RoadMallawali, JorhatChenlihat T.E.N.H. 37Road from NH, 37 to NahoraniDergaon Golaghat RoadBarpukhuripar, DadharagaonDaria T.E. to NH 37Gariajan T.E. to NH 37Khumtai T.E. to NH 37NH 37Village Road to NH 37Village Road to NH 37NH 37, Near DhansiriNH 37 to ImphalNH 37NH 37Brick Field RoadVillage RoadNH 37Village RoadNH 37NH 37NH 37NH 37NH 37NH 37NH 37NH 37NH 37NH 37NH 37NH 37Nowgaon-Silghat Line

PS-3


265.13272.50278.48278.50284.80286.30294.15294.20296.80

296.90300.70304.69304.70321.00321.90326.50333.65335.10340.90341.90

361.00383.40383.50384.00389.80390.00393.00395.20397.50398.50399.00401.57401.60401.80401.90403.80406.50407.20411.80415.80416.00420.20420.90421.00421.80422.90424.10424.20424.40424.60424.70426.40426.50426.70426.80428.20429.60431.20432.40437.50438.80447.10447.20447.40451.40452.40454.40457.50

RailRoadRoad

RoadRoadRoad

Rail

RoadRoad

RailRoadRoadRoad

RailRoadRoad

RoadRailRailRoadRoadRoadRoadRoadRailRoadRoadRailRailRoad

RoadRoadRoadRoadRoadRoadRoad

Rail

RoadRoadRoadRailRail/RoadRoad

Road

RoadRoadRoadRoadRoadRoadRoadRoad

Road

RoadRoadRoad

Road

RoadRoadRoad

RoadRail

Road

Road

RailRailRoadRoadRoadRoadRoadRoadRoadRoadRoadRoad

RoadRoadRail/RoadRoad

RoadRoadRoadRoadRoadRoadRoad

Road

Road

Road

RoadRoad

Silghat-Chaparmukh Branch LineNH 37NH 37NH 37Road From NH 37 to NonoiRoad From NH 37 to SamaguriNH 37 to VillageVillage Road to NH 37 Near PuranigudamSilghat-Chaparmukh Branch Line NearPuranigudam St.M.G. Branch LineNH 37 to Nanoi RoadNagaon-Hojai RoadNagaon Hojai RoadChaparmukh Silghat Branch LineNH 37Raha-Jagiroad PWD Road,NH 37Rly. Main LineRoad, NH 37Rd. Linkng NH 37 Raha-Jagiroad Rd. atDharamtulRaha-Jagiroad Road, In Front of RS-5Rly. Mainline Near Digaru StationRail Line to Digaru Station Yard.Approach Road to Digaru Rly. StationNarangi-Sonapur RoadNarangi-Sonapur RoadNarangi-Sonapur RoadNarangi-Sonapur Rd, Just near the Army AreaRly. Line to Army Area YardDomestic Road in Army AreaDomestic Road in Army AreaRail Line to Satgaon Army AreaRail Line to SatgaonGauhati-Sonapur RoadRoad to SatgaonExpress Highway to be ConstructedGuwahati-Shillong RoadBasistha RoadKalapahar-Guwahati Road/NH 37Road From Maligaon to NH37/Gravelled RoadNH 37NH 37-Engineering College RoadRoad from NH 37 to Engineering CollegeJogighopa-Guwahati Rail Crossing.NH 37NH 37 in University Area/GHY-Goalpara Rd.Road to Brahmaputra BridgeIWT RoadRail Siding Line (Not Existing Now).Road and Rail Line to Army Camp.Future RoadGuwahati-Amingaon RoadHajo Amingaon RoadGuwahati-Hajo-Nalbari RoadGuwahati-Hajo RoadGuwahati-Hajo-Nalbari RoadGuwahati-Hajo-Nalbari RoadGuwahati-Hajo-Nalbari RoadGuwahati-Hajo-Nalbari RoadGuwahati-Hajo-Nalbari RoadGuwahati-Hajo-Nalbari RoadGuwahati-Hajo-Nalbari RoadGuwahati-Hajo-Nalbari RoadNalbari-Barpeta RoadGuwahati-Hajo-Nalbari RoadGuwahati-Hajo-Nalbari RoadKamarkuch-Bijulighat RoadGuwahati0Hajo-Balbari Road


464.50468.40473.80480.90481.60482.60483.60490.90496.00498.40501.20505.50512.80517.30518.20520.30520.70522.60530.10540.20541.70542.30550.90552.40553.00556.00556.70562.20565.20567.20570.80572.00572.70573.20575.60577.00

579.00579.50586.80587.80588.00588.70590.20590.30591.50593.70595.00595.20595.40595.50598.20598.30598.40598.80603.00604.00604.20605.50605.80608.30611.00611.30612.80620.10627.00627.30627.70628.00632.20

RoadRoadRoadRoadRoadRoadRoadRoadRoad

RoadRailRoadRailRailRoad/RailRoadRoadRoadRoadRoadRoadRailRoadRoadRoadRoadRoadRailRailRoadRoadRoadRailRailRoad/Rail

RoadRoadRoadRoadRoadRoadRailRailRailRoadRoadRoadRoadRoadRoadRoadRoadRailRoadRoadRoadRailRailRoadRailRailRailRoadRoadRoadRailRailRail

RailRoad

Chamta-Bagalchok RoadNalbari-Barpeta Road in Front of RS.8Chamata-Kaithalkuchi RoadHaribhansa-Tihu RoadMakhibaha-Tihu RoadSarthebari-Tihu RoadBongaigaon-Tihu Road,Dubi-Pathsala RoadNH 37Main Railway Line M.B.Sarupeta-Rupahi RoadMain Rail LineRS-9 RoadAbandoned Rly, Siding without RoadRailway Siding LineSarbhog Road and Abandoned Rail TrackKumarigaon-Barbhog RoadVillage Road to Sarbhog Rly. StationBijni RoadBijni NH 31 RoadDulani Road,Dulani RoadM.S. Rilway lineLateral RoadLateral RoadMain Road of Bongaigaon TownRoad to PS8 CampusDangtola RoadRailway Mainline, M.S.Railway Mainline, M.S.NH 31 Basugaon RoadNH 31 Basugaon RoadBasugaon-Kokrajhar RoadRly. Mainline, B.G.Rly. Mainline, B.G.Basugaon-Kokrajhar Rd. & Rly. Siding Line atSalakatiRoad in Salakati AreaBasugaon-Kokrajhar RoadKokrajhar NH 31 RoadKokrajhar-Salakati RoadKokrajhar-Fakiragram Road in Kokrajhar TownKokrajhar-Bilashipara RoadRailway Mainline, B.G.Railway Minline, M.S.M.S. SidingFakiragram-Sidli RoadFakiragram-Sidli RoadFakiragram-Sidli RoadFakiragram-Sidli RoadForest Road From Kokrajhar to FakiragramSafranguri-Fakiragram RoadFakiragram-Sidli RoadFakiragram-Dotma RoadAbandoned Rail TrackSapatram-NH 37 RoadVillage RoadGuide Bund CrossingB.G. & M.G. MainlinesB.G. LineSapatgram-Gossaigaon RoadB.G. LineB.G. LineB.G. Line Near GarufellaTamahat-Kachugaon RoadMarnai T.E.-Srirampur R.S. RoadGosaigaon – NH 31 RoadRly. Mainline B.G.Rly. Mainline B.G.Rly. Mainline B.G.


637.30639.50646.10649.40650.70655.40670.80671.20671.60671.80683.70690.80692.20692.40694.90695.20701.30702.80714.40718.20718.30726.00726.30726.40726.50728.00729.00731.80735.00739.40742.10747.00747.20749.80750.40753.00753.10758.50764.90766.70773.30774.30

775.20775.30779.30780.70782.50782.70783.70784.00787.40788.50790.70792.70794.10795.50800.50805.10813.50814.80826.00827.00833.30840.80860.20878.80886.70886.90908.70

RoadRailRoadRailRoadRoadRoadRoadRailRailRoadRoadRoadRoadRoadRoadRailRoadRailRoadRoadRoadRoadRoadRoadRailRoadRoadRoadRoadRailRoadRailRailRoadRoadRoadRoadRoadRoadRoadRail

Road/RailRoadRoadRoadRailRoadRoadRoadRailRoad/RailRoadRailRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRailRailRoadRoad

Jorai RoadRly. Mainline B.G.Jorai-Alipurduar RoadRly. Mainline B.G.Lateral RoadChepani Road-Cooch-Bihar – Guwahati RoadRly. Mainline M.G.Rly. Siding LineKalchini-Namtihat RoadRoad to Hasimara AIR BaseRoad to Hasimara AIR BaseRoad to Hasimara AIR BaseHasimara – Madarihat RoadHasimara Rly. Station RoadRly. Mainline M.G.Madarihat RoadRly. Mainline M.S.Birpara CrossingBirpara CrossingMainroad to Binaguri Army Camp.Internal Road to Binaguri Camp AreaInternal Road to Binaguri Camp AreaInternal Road to Binaguri Camp AreaRly. Mainline M.G.Road in Front of RS-12NH 31C to Bhutan BorderNH 31C to Tea EstateNH 31C to Tea EstateRly. Mainline M.G.NH 31Rly. Mainline M.G.Rly. Mainline M.G.NH 31CNH 31CRoad toThalihashat T.E.Lateral RoadNH 31CNH 31CNH 31CRLY. M.G. Line From New Mal Jung. ToMainaguri Rd.Rly. M.G. Mainline and NH 31CNH 31CLateral Road From NH 31CNH 31CRly. Mainline M.S.NH. 31CNH. 31CRS. 13 ROADRLY. MAINLINE M.S.NH. 31C and Rly. M.G. MainlineNH. 31CRly. M.G. MainlineLateral RoadNH.31CLateral RoadNH.31CLater Road to Siliguri Radio StationLateral RoadLateral RoadNH. 31CNH 31CLateral RoadNH 31CRly. Mainline M.G.RLY Mainline M.G. & B.G.NH. 31Road From Kishanganj to Garigaon


921.10929.40932.30938.70973.50975.40975.70977.00978.60986.60989.50996.20997.801006.501008.601009.801020.301030.301032.501032.801040.201041.101042.901044.301055.701057.401060.501066.001072.301090.801090.901100.201101.801104.801110.201113.301113.601120.901150.501156.501156.561156.60

RoadRailRoadRoadRoadRailRoadRoadRoadRoadRoadRoadRoadRoadRoadRoadRailRoadRoadRoadRoadRoadRoadRoadRoadRailRailRoadRoadRoadRailRailRoadRailRoadRoadRailRailRoadRailRoadRoad

Lateral RoadRly Mainline MG. & B.G.Lateral RoadNH 34Lateral RoadKatihar-Jogbani M.G. LineLateral RaodLateral RaodLateral RaodLateral RaodLateral RaodLateral RaodNH. 31NH. 31NH. 31NH. 31Rly. M.G. LineNH.31Lateral roadNH. 31Lateral RoadLateral RaodLateral RaodNH. 31 and two Lateral roadsNH. 31Rly. Lateral Line, M.G.Rly. Mainline M.G.Lateral RoadNH. 31Lateral road to MansiLateral Rly. LineRly. M.G. LineRoad to Mahesh KhuntRly. MainlineLateral RoadLateral Road to BarauniRly mainline MG. & BGRly. Line M.G.Road to KhagariaRly. MG. MainlineLateral Road in front of Barauni TerminalNH.31 in front of Barauni Terminal

. FEEDER PIPELINES

GAUHATI REFINERY

Type of CrossingSl No ROWKM Point Mainline Loopline

123

1.852.202.22

RoadRoadRail

Narangi-Chandrapur RoadPWD Road near India CarbonRailway Mainline

PS-5PS-5PS-5

BRPL

Type of CrossingSl No ROWKM Point Mainline Loopline

Location Maint.Base

1 2.1 Road NH-31C PS-5


SCHEDULE A1-3

OIL INDIA LIMITEDGROUND PATROL INSPECTIONS AND REPORTS

SerialNo.

Description Frequency Inspectionand reporting

month

Sectionresponsibility

1 100% GROUNDPATROL,JEEPING/WALKINGTHE ENTIRE RIGHTOF WAY FOR ALLASPECTS OFINSPECTIONINCLUDING ALLCASED RAIL &ROAD CROSSINGS,RAIL & ROADBRIDGECROSSINGS,ENCROACHMENTS,WASHOUTS ETC.

HALF-YEARLY

MAYNOVEMBER

BASEPIPELINEIN-CHARGE

2 AS ABOVE BUT TOTHE EXTENTJEEPABLE

MONTHLY EACHMONTH

PUMPSTATIONIN-CHARGE

3 SUSPENDEDCROSSINGS

QUARTERLYFEBRUARY

MAYAUGUST

NOVEMBER


4 RAILWAY BRIDGES QUARTERLYFEBRUARY

MAYAUGUST

NOVEMBER


5 ROAD BRIDGES QUARTERLYFEBRUARY

MAYAUGUST

NOVEMBER



SCHEDULE A1-4

OIL INDIA PIPELINEPUMP STATION / BASE PATROL LIMITS

From Km. To Km. Responsibility

0.0

34

71

214

351

497

632

783

920

1058

0

351.0

704.0

34

71

214

351

497

632

783

920

1058

1157.58

351.0

704.0

1157.58

Station In Charge P.S- 1









Station In Charge B.T

Engineer In Charge P.S-3 Base(Pipeline Maintenance)Engineer In Charge P.S- 5 Base(Pipeline Maintenance)Engineer In Charge P.S- 8 Base(Pipeline Maintenance)


OIP-1

OIL INDIA PIPELINEPIPELINE PATROL REPORT

Base ________________ Subject ________________________ Date_____________

FromKm. P.

ToKm. P.

Observations Remarks

Distribution (Check original and each copy):

Original - Base

Duplicate - H.Q. Signed ______________________________

Triplicate - Administration Designation __________________________


SECTION - A2

INSPECTION OF SUBMERGED RIVER CROSSINGS

A. FUNCTION AND OBJECTIVE - To detect any condition such asscouring, erosion, and river bank protection damage, which exists, or wouldpossibly develop into conditions which would impair the operation of thepipeline crossing. The appropriate preventive or corrective maintenancework will be based on these inspection reports.

B. REPORTING - A detailed report of conditions observed is to be preparedby the Base Pipeline Engineers on Form OIP-1 and distributed to Base andH.Q. Offices.

C. SCOPE AND FREQUENCY OF INSPECTION - All submerged rivercrossings are to inspected at six monthly intervals, i.e. during high flood andlow water conditions. Such inspection reports are to be submitted in Julyand January of each year.

D. RESPONSIBILITY - The administration and follow up of the inspectionschedule is the responsibility of Deputy Chief Engineer Pipeline (PipelineMaintenance). The sectional responsibility for physically carrying out thisfunction is that of the Base Pipeline Engineers in accordance withSchedule A2-1 attached.


SCHEDULE A2-1

OIL INDIA PIPELINE

SCHEDULE OF SUBMERGED CROSSINGS

745.50746.10750.50765.90774.60803.00912.00959.50977.22985.801009.30

KaliajhoraKuji DianaGhathiaKurtiKumlaiSevokKhagra NullahPanarSauraKosi DharBarhandi

MainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainline

PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8PS 8

Km. River Crossing Pipeline Maintenance Base

52.28106.5135.32154.27242.70273.90277.30311.60311.67330.36

DiraiJhanziBhogdaiKaka DangaDeopaniMisaDijodKolongKalang (Nowgaon)Kalang (Malankata)

MainlineMainlineMainlineMainlineLooplineLooplineLooplineLooplineMainlineMainline

PS 3PS 3PS 3PS 3PS 3PS 3PS 3PS 3PS 3PS 3

438.20438.20453.6460.90471.60471.60476.70476.70482.50482.50484.00484.00493.00541.90553.40563.90569.50582.10582.50597.40600.70653.30659.00662.90674.40687.30700.60709.60712.20716.35722.90

Sessa NadiSessa NadiChaulkhowaPagladiyaBuradiyaBuradiyaMora PagladiyaMora PagladiyaTihuTihu KaladiyaKaladiyaTirkunijanDulaniKujia RiverKujia NullahKhani BharTarang NewTarang OldHelLoskaDharsiJaugtiChekoDimaKuljaniHolongMujnaiEktiBirpara JharaDim Dima

MainlineLooplineLoopline (HDD)LooplineMainlineLooplineMainlineLooplineMainlineLooplineMainlineLooplineLooplineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainlineMainline

PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5PS 5S 5


OIP-1



FromKm. P.

ToKm. P.



Original - Base




SECTION A-3

AERIAL PATROL INSPECTION

A. FUNCTION AND OBJECTIVE - A helicopter patrol programme ismaintained to observe surface conditions on and adjacent to the pipelineright-of-way, indications of leaks, construction activity, other than thatperformed by the Company, encroachment, and any other factors affectingthe safety and operation of the pipeline.

B. REPORTING - Any of the above conditions are to be reported on FormOIP-1 and promptly distributed in accordance with the prescribeddistribution on the bottom of this form.

C. SCOPE AND FREQUENCY OF PATROL - The entire pipeline shall bepatrolled by helicopter twice a month. The patrol shall be carried out by theBase Pipeline in-charges within their defined areas.

D. RESPONSIBILITY - The administration and follow up of this inspection,and the effective use of helicopters is the responsibility of the Deputy ChiefEngineer Pipeline (Pipeline Maintenance), who will ensure that adequateflying time is allocated to Bases to carry out aerial patrols.


OIP-1



FromKm. P.

ToKm. P.



Original - Base




SECTION A-4

INSPECTION OF IDENTIFICATION FACILITIES

A. OBJECTIVE AND RESPONSIBILITY - The objective of installing,inspecting and maintaining the various identification signs, markers, etc., isto make the general public aware of the existence and ownership of theCompany's facilities in order that these facilities may be respected andprotected. The responsibility for the upkeep of these on the right-of-way isthat of the Base Pipeline In-charges, and at Pump Stations and Repeaters,that of the Station In-charges.

B. REPORTING - During the Semi-Annual Ground Patrol, these signs andmarkers will be inspected and any needed repairs will be reported on thePipeline Patrol Report (OIP-1).

C. IDENTIFICATION OF RIGHT-OF-WAY

1. Kilometer Post Markers - These are installed every kilometeradjacent to the pipeline and are permanently numbered. The sign is tobe painted annually bright yellow for ready identification and to bemaintained free of growth or any obstruction to normal view.

2. Special Markers - These are installed at special places where thereare unusual constructional activities or high population densitynecessitating a more precise definition of the pipeline route. Spacing,downwards to 100 ft (30 meters) will depend on circumstances. Thesesigns are to be painted bright yellow and inspected during monthly jeeppatrols by Station In-charges.

3. Right-of-way Boundary Markers - These concrete markers areinstalled on either side of the right-of-way at I.P.'s and between I.P.'s atapproximately 500 ft (152 meters) intervals. These markers areimportant since they define the Company's land/lease hold. They shouldbe cleared of growth and cultivation semi-annually and missing markersreplaced and local police informed. Any markers askew should bestraightened. The markers should be colour washed white with letteringetched in black paint and maintained so that they are at all timesidentifiable.


D. IDENTIFICATION OF BLOCK VALVES - All block valve covers on theright-of-way shall be painted with aluminium paint and the valve numbershall be painted in large black letters on the top cover so as to beidentifiable at all times from the air. On the doors of all block valve coversthe following sign shall be embossed; "OIL INDIA PIPELINE. INEMERGENCY PHONE - XXXXXX." The telephone number will be that ofthe pump station in whose Jurisdiction (right-of-way limit) the block valve islocated. Station In-charges shall be responsible for keeping the valve areaclear of wild growth and accessibility in their respective jurisdiction.

E. IDENTIFICATION OF SUBMERGED CROSSINGS - Identification signsshall be erected, inspected and maintained at all scheduled submergedcrossings and canals. These signs shall be placed 100 ft (30 meters) fromthe riverbank on either side and planted adjacent to the pipeline at thatspot.

F. IDENTIFICATION OF PUMP AND REPEATER STATIONS - The "OILINDIA" signs shall be maintained to give a smart appearance at all times.Standard pattern "NO UNAUTHORISED ENTRY" and "NO SMOKING"signs shall be placed and maintained at all entry gates in use. All inventorynumber signboards to be inspected and maintained as necessary semi-annually.

G. INSULATING FLANGE MARKERS - These are to be inspected andmaintained half-yearly.

H. SPECIAL NOTE - During any National Emergency declared by theGovernment of India, no sign be exhibited identifying the name of the town,village or place.


.OIP-1



FromKm. P.

ToKm. P.



Original - Base




SECTION A-5

OPERATING PIPE DEFECTS AND LEAKS

A. FUNCTION AND SCOPE - The function of this report is to record all knownfacts and conditions related to an operating pipeline defect or leak and itstemporary or permanent repair. These records are to be retained as longas the section of line involved remains in service. This report is notintended for use on stock pipe or pipe under construction.

B. REPORT - The pipe defect and leak report, Form OIP-2, is designed toeasily record essential information pertinent to a leak or defect such aslocation, type, description and cause of defect, physical properties of thepipe, type and condition of coating and type of repair. In the eventpermanent repairs cannot be made immediately, a space is provided forrecommendation on the method of permanent repair.

In the upper left hand corner of this form a space is provided for classifyingthe repair as permanent or temporary. The record of each defect willremain under review until a report is received on the permanent repair.

The section on coating is an essential part of the report in that the coating isoften a factor in the defect and leak development, and in any case anopportunity is given to check the condition thereof. The Cathodic Engineershould be given an opportunity to examine the condition of the coating andleak prior to cleaning or otherwise disturbing the natural conditions.

C. RESPONSIBILITY - The responsibility for preparing and submitting thisreport is that of the Deputy Chief Engineer Pipeline (Pipeline Maintenance).

D. REPAIR OF PIPE DEFECTS AND LEAKS - Each pipe defect or leakdiscovered in an operating pipeline requires individual consideration andjudgment as to the potential danger of the leak or defect which thereforedictates the method of re-pair. Basically, defects or leaks fall in one of twogeneral categories - those requiring immediate cut-out or weld repairs, andthose which may be temporarily rectified by emergency repair pending apermanent repair at a later date. For Maintenance procedures relating tosuch repairs see Section A-6.

Pipeline Operation Manual 20 Rev1

OIP-2OIL INDIA PIPELINE

OPERATING PIPE DEFECT AND LEAK RECORD

Report ofv Initial Discoveryv Temporaryv Permanent Repair

1. LOCATIONBASE ____________________ Km.P__________________Meters East/West ______________________________SPECIAL FEATURES ___________________________________________________________________________

2. OCCURRENCE:DATE _____________TIME ____________ DISCOVERED BY WHOM __________________________________DATE _____________TIME ____________ REPORTED TO H.Q. BY WHOM _____________________________

3. CLASSIFICATION: OIL LEAK MAJOR / MINOR PIPE DEFECT MAJOR / MINOR

4. TYPE OF DEFECT:SEAM LENGTH _____________” WIDTH _____________” DEPTH _______________”DENT LENGTH _____________” WIDTH _____________” DEPTH _______________”CORROSION LENGTH _____________” WIDTH _____________” DEPTH _______________”CRACK LENGTH _____________” WIDTH _____________” DEPTH _______________”POROSITY NUMBER OF HOLES __________________ DIAMETER ____________________”OTHER INFORMATION_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

DEFECT IS LOCATED AT __________________________ O’CLOCK ON PIPE LOOKING DOWNSTREAM ONPIPEWALL*/GIRTH WELD* / LONGITUDINAL WELD*.IF DEFECTNOT ON GIRTH WELD, LOCATING DISTANCE TO GIRTH WELDUPSTREAM _____________’ ______________” DOWNSTREAM _____________’ ______________”DIAMETER OF PIPE _____________________” WALL THICKNESS _________________________”PIPE MANUFACTURER FROM STRINGING CHART ________________________________________________

5. TYPE OF TEMPORARY REPAIR:BOLTED LEAK CLAMP*LEAK COUPLING*OIL LEAK SEALED OFF YES / NO *OTHER INFORMATION _______________________________________________________________________________________________________________________________________________________________________

6. TYPE OF PERMANENET REPAIR:CUT OUT AND REPLACE SECTION * __________________ LENGTH ____________’ ______________”WELDED TYPE CLAMP*WELDED TYPE COUPLING*OTHER* DESCRIBE ____________________________________________________________________________METHOD APPROVED BY CHIEF ENGINEER ______________________________________________________

7. COAT AND WRAP CONDITION:TYPE _________________________________________________________________________________________ACTUAL THICKNESS _______________ MOND TO METAL GOOD / FAIR / BAD*EVIDENCE OF SOIL STRESS YES / NO *REMARKS __________________________________________________________________________________________________________________________________________________________________________________

8. OPERATION:LINE CLEARED FOR OIL MOVEMENT AT ________________ KG/CM² PRESSURE

• Delete which is not applicable

___________________________________

Deputy Chief Engineer

Date ___________________________________Distribution

Chief Engineer Pipeline (Operation)Deputy Chief Engineer Pipeline (Pipeline Maintenance)/ (Oil Movement)/ (Electrical & Cathodic)BASE PIPELINE INCHARGE.


SECTION A-6

PIPELINE MAINTENANCE PROCEDURES

A. FUNCTION AND SCOPE - The function of this section is to lay downacceptable maintenance procedures for temporary and permanentrepairs to the pipeline, and to ensure that adequate safety measuresare adopted.

B. RESPONSIBILITY - The responsibility for ensuring that suchpractices are adhered to in the field is that of the Base PipelineMaintenance Engineers in charge of work in progress.

C. TEMPORARY LEAK REPAIRS - A complete range of approved leakrepair materials is stocked at each maintenance base as listed in theSchedule of Pipeline Maintenance Equipment. For the majority ofdefects likely to be encountered, this range of equipment will providefor a safe and temporary cold repair. If, as a result of a major leak, apipe joint/pup is to be replaced/inserted, a cold repair using ‘weld +end’ couplings is acceptable as a temporary repair bearing in mind theneed to get the line operational soonest, and that crude spillage mayprevent welding for some time.

A temporary repair in these categories should be made permanent atthe first opportunity, and here, each case must be judged on its merits.Generally speaking, subsequent welding of approved leak couplings,‘weld + end’ couplings, and leak patches will constitute a permanentrepair, however, approval of the Chief Engineer is required before sodoing. Subsequent welding should only be carried out when the areais gas-free and with oil moving in the line at reduced pressure.

All repairs in the category of temporary must be regularly inspected,and any temporary-leak-clamps having neoprene inserts checked fortightness fortnightly.

D. SCHEDULED PERMANENT REPAIRS - When any permanent repairis scheduled necessitating cutting the line, a water plug shouldwhenever possible, be inserted to minimise crude spillage and for saferworking.

If the faulty section is to be adjacently stoppled, such welding asrequired for tapping should be carried out with oil moving at reducedpressure, before insertion of water plug. If the distance betweenstoppled is not excessive, a water plug need not be placed providedadequate and prior arrangements are made for disposing crudespillage.


Immediately after the line is cut, arrangements must be made forblinding the upstream and downstream ends of the line. If the line isshut down, Maloney Templugs may be used to contain any static headdeveloping/resulting from nearest block valves.

If the faulty section is by-passed with a temporary line such thatpressure other than static head exists at valves/stopple valvesimmediately upstream and downstream, the line when cut, must beimmediately blinded by either adequately rated cone-lock-stoppers orcapped - ‘weld + end’ - couplings. Maloney Templugs must never beused for blinding when pumping is in progress under these conditions.

The Base Pipeline Maintenance Engineer In-charge of the work issolely responsible for and solely authorised for valve operation andsafety connected therewith when field repairs are in progress. Thisresponsibility can in no circumstances be delegated.

1. Cold Closing Tie In - This is permissible under certaincircumstances to be decided by the Chief Engineer, and would consistof using ‘weld + end’ couplings to be welded later on when oil is againmoving in the line at reduced pressure.

2. Hot Closing Tie In - This is the preferable method of tying in,but may only be carried out by trained crews. In each case the trainedwelder must be authorised on Form OIP-3 in writing by the BasePipeline Maintenance Engineer In-charge before carrying out this work,and authorisation must be cleared by Chief Engineer beforecommencement of hot tie in.

E. CRUDE OIL SPILLAGE -

1. Adequate arrangements must always be made to safely containspillage, if the line has to be cut for any reason or if a major leakoccurs. If a line cut is scheduled, usually a water plug will beinserted into the section in question. However, the resultantemulsion should be treated as crude spillage insofar as safety andcrop damage is concerned. Safety points to be observed are asfollows;

a) Spillage storage, if not mobile, is to be sited at not less than 60metres distance from bell hole if welding is to be carried out lateron.

b) Posting of guards to keep villagers away from spillage andforbidding the use of smoking and naked lights.

2. If a serious leak occurs, e.g., a split seam, it is possible that alarge area will be affected by spillage, particularly, if the pipe


section is under a static head. The following precautions must beimmediately taken.

i) Enclosing the area with an earthen bund to contain thespillage.

ii) Posting of guards to keep villagers away from bunds andforbiding of use of smoking and naked lights.

iii) If welding is to be carried out in the vicinity of aspillage/pit, the following precautions must be adopted.

a) Since "light ends" in the crude spillage will evaporate,due attention must be paid to dangers of "flashback".Welding should not be carried out within at least 60meters of a crude oil spillage pit, and to the windwardside.

b) Irrespective of this distance, however, continuousexplosimeter-readings must be taken during welding.If, for any reasons, concentration of inflammablegases causes the instrument to register danger signal,welding must be immediately discontinued, until theatmosphere again registers safe.

c) Welding sets should be located at least 60 metersaway from the spillage. Plant attendants should havestrict instructions to shut down the set if theexplosimeter indicates a hazardous atmosphereemerging.

F. WELDING - See Section E, Pipeline Welding Specification.

G. TESTING - When the line has been cut, or a new section introduced,the line section shall, wherever possible, be brought up to maximumworking pressure for a period of at least four hours.

Any section so introduced shall, however, be tested in accordance withANSI B 31.4 (latest edition) before tieing in.

H. OIL RECOVERY -

1. Crude oil temporarily stored in spillage pits must be recovered as soonas possible, both from a safety and an economical aspect. If quantitiesinvolved are small and the area accessible, mobile tanks should beemployed, and recovery effected at the nearest pump/repeater station.If the amount involved is large, line tapping may be used and the oil


pumped into the line by means of a high- pressure recovery pump. Thesame precautions outlined under Crude Oil Spillage should be adoptedas applicable.

2. Clean up of the area is an important and necessary conclusion after allcrude oil has been disposed of. This is achieved by spreading a layerof dirt over the area, sufficient to soak up all patches.

I. SAFETY - The following safety points must at all times be strictlyobserve;:

GENERAL -

i) The Pipeline In-charge or his authorised representative in charge of thejob shall brief the welder on the possible hazards of the specific job.

ii) The Pipeline In-charge or his authorised representative in charge shallobtain the necessary approvals and notify those concerned before thewelding operation begins.

iii) Welders are responsible to the Pipeline Maintenance Engineer In-charge for the proper maintenance and safe operation of weldingequipment.

iv) The welder should always thoroughly instruct his helpers concerningthe work procedures and safety procedures in the specific job before itis begun.

v) The Pipeline Maintenance Engineer In-charge and the welder shouldsee that the welder and helpers wear adequate eye protection andfollow safety precautions while the welding job is being performed.

vi) Each welding unit should have available at least two 10 kg CO2 fireextinguishers and a first aid kit including a special burn kit. The welderis responsible to the Pipeline Maintenance Engineer In-charge for thecondition of the safety equipment carried with the welding unit.

vii) Flames, sparks, molten slag, and hot metal should be prevented fromcoming in contact with combustible materials.

Viii) Whenever practicable, the object to be welded upon should be movedto a location designated as safe for welding, or movable fire hazardsshould be removed.

ix) Before welding in any bell hole or building at any location where therehas been a crude oil or product spillage, the area is to be tested withan explosimeter and must be gas-free. This testing should becontinued at short intervals during the repairs to insure against theencroachment of explosive mixtures. Before the welder begins his


actual welding operation, he should test the pipe or bell hole bylowering a lighted welding torch into it.

x) Welding must be stopped if vapours become noticeable in the area inwhich the work is being performed and should not be resumed until thearea is tested with an explosimeter and found to be gas-free.

xi) Screens or other suitable means should be used to protect nearbyemployees from the rays of the welding arc.

xii) When a weld is to be made on a partition or on the side of a building orstructure, all combustible material should be removed from theopposite side of the partition or wall.

SAFETY PRACTICES IN PIPELINE WELDING -

i) Only experienced Pipeline Maintenance Engineers and trainedwelders/workmen should work on a loaded pipeline.

ii) In welding on a loaded pipeline, only electric arc welding shall be used,and only when enough fluid is flowing through the pipeline to carryaway the heat of the arc. (Welding limitations on specific types of pipeshould be closely followed).

iii) Bell holes for repairs to pipelines should provide sufficient room for thewelder to work freely and to make a quick exit in an emergency. ThePipeline Maintenance Engineer In-charge should determine if shoringis needed to prevent a cave-in.

iv) A safety belt with lifeline attached should be worn by the welders whowork in deep bell holes.

v) An experienced employee should hold the lifeline during the weldingoperation.

vi) Only the welder should be permitted in the bell hole during weldingoperations.

vii) Fire extinguishers shall be manned and be ready for instant actionshould a fire occurs when welding on a loaded pipeline

viii) A first-aid burn-kit should be placed in readiness and be available forinstant use before starting a welding operation.

ix) When welding on a loaded pipeline, mobile radios must be used forcommunication, and should be kept "on" at all times for readycommunication with Oil Movement Engineer On Duty (Despatcher).


x) Before welding on a trunk or main line, in addition to the precautions aslisted in this section, the following specific procedures must befollowed;

a) The Pipeline Maintenance Engineer in charge of the welding mustnotify the Deputy Chief Engineer Pipeline (Oil Movement)/ DeputyChief Engineer Pipeline (Pipeline Maintenance) before commencingwork. If the welding is to be done on a loaded line, the DeputyChief Engineer Pipeline (Oil Movement)/Duty Oil MovementEngineer and the Pipeline Maintenance Engineer In-charge willdiscuss repairs to be made to the end that a safe working pressuremay be determined and maintained and other safety precautionsmay be taken.

b) The Deputy Chief Engineer Pipeline (Oil Movement)/Duty OilMovement Engineer will be responsible to see that the pressureagreed on is not exceeded until the welding operations arecompleted.

c) If welding is to be done on an open line, the Deputy Chief EngineerPipeline (Oil Movement)/Duty Oil Movement Engineer will ensurethat all pumping units have been shut down and give clearance tothe Pipeline Maintenance Engineer In-charge to enable him to closethe immediate block valves pertinent to the job in hand. ThePipeline Maintenance Engineer In-charge of the work is aloneresponsible in ensuring that these block valves are closed and arelocked out to prevent operation by unauthorised persons. All blockvalves so locked out are to be tagged with a red danger board"Danger Do Not Operate - Work in Progress".

d) On the completion of the welding operation the PipelineMaintenance Engineer In-charge of the job will notify the DeputyChief Engineer Pipeline (Oil Movement)/Duty Oil MovementEngineer that the welding is completed and that the line is ready fornormal operations.

xi) All automotive equipment, welding machines, tractors, portablepumping equipment, and other possible sources of ignition are to bekept at a safe distance (60 metres minimum) and on the windwardside, if possible, from crude oil or products spill until the spill has beencleaned up and the area found to be gas-free after testing with anexplosimeter.

xii) When working near crude oil spillage all employees are to leavematches, lighters and smoking material in a location designated by thePipeline Maintenance Engineer In-charge and at least 60 metres awayfrom the operations.


xiii) On pipelines which carry induced cathodic protection currents, thecurrents must effectively be removed before work is done on the lines.All rectifiers must be turned off or disconnected.

xiv) When pipelines which have been in crude oil or products service are tobe parted, or when sections of lines are to be joined, a bonding cablemust be installed between the two sections to reduce the possibility ofspark ignition of combustible vapours. This bond must be made beforethe line is cut, or before the last connection is made in joining twosections. (Further, on well-coated lines, in order to effectively eliminatepossible straying earth current hazards, the bonding cable should begrounded. This may be accomplished by connecting the cable to aground rod driven approximately two metres into the bottom of the bellhole. The rod should be a pipe of a minimum diameter of 3/4" or 5/8"diameter iron rod). The purpose of these electrical bonds is tominimise the possibility of electric sparks from induced currents, straycurrents or static electricity by providing safe metallic circuits foranticipated electrical flow paths.

xv) Following the attachment of the bonding cable and the cutting of theline, vent holes should be cut. Vent holes must not be drilled by anelectrically powered drill. Holes should be located at least 60 metres (ifpossible) both ahead of and behind where the line is cut. When it isnecessary to vent the line closer than 60 metres, a line or hose shouldbe connected to the vent to carry unexpected gas vapours or oil to asafe distance from the job.

xvi) When the "cut-out" section of the line has been removed and drainagecleaned up, each end of the line should be plugged with an expandablemechanical plugging device or a clay or drilling mud plug. The mudplugs should be located from 0.6 metre to 1 metre back from theproposed welds. It must be packed solid with a skid or tamp so that itis of sufficient strength to trap drainage or any surge within the line.

xvii) All oil and oil-soaked earth must be removed from the bell hole and theimmediate vicinity. The removed oil-soaked dirt should be replacedwith dry dirt to prevent flashing from welding. After the area is freed ofgas and oil, tests with an explosimeter should be made.

xviii) Even though the gas tests are negative, it is considered a safe practiceto drop a lighted welding torch into the ditch near the open lines as anadditional safeguard before entering the immediate area.

xix) An employee should be stationed at each vent or vent line and bestationed there to remain during the entire welding procedure. Theyshould be alert at all times to observe any undue quantity of air, gas oroil escaping from the vent or vent lines, so that welding may bestopped immediately pending further investigation.


xx) After welding has been completed, the vent holes in the line must beplugged, or closed with a patch and leak clamp. The patch should bewelded after the line has been filled.

WELDING AT A PUMP/REPEATER STATION:

i) Prior authorisation must be obtained from the Deputy Chief Engineer(Pipeline Maintenance) before beginning welding operations within aPump Station area.

ii) The engineer in-charge of the welding job shall discuss the proposedwork with the Station Engineer In-charge responsible for the station toensure compliance with all safety practices.

iii) Generally, the station should be shut down and by-passed. All powercircuits to the pump house should be isolated at the generator house.All of the switches, gate valves and control points instrumental in theshut down should be locked out and tagged with the red danger board"Danger Do Not Operate - Work in Progress".

a) All gate valves and other connections involved must be blankflanged. All gate valves and controls must be tagged with thedanger board "Danger Do Not Operate - Work In Progress".

b) During the welding operation all nearby pump pits likely to causedanger should be covered with water soaked tarpaulins.

c) Just prior to welding on or cutting on a line that has contained oil orgas, the line must be thoroughly washed out with water and purgedwith air until such time as tests indicate it is gas-free.

iv) Prior to welding, explosimeter tests must indicate the area is free ofgas. These tests must be repeated frequently to insure that theatmosphere continues to be gas-free until the welding is finished.

v) Before the welder begins his actual welding operation, he should testthe pipe or bell hole by lowering a lighted welding torch into it.

vi) While welding, fire extinguishers must be manned and ready for instantaction.

vii) While welding in the vicinity of the station, no employee should be in aconfined space such as a pump pit or sump, etc.

viii) When the welding is completed and the Station Engineer notified, thestation operation should be brought back to normal.


ix) When welding is to be done on a line in a station for installation ofinstruments, tapping connections, thermowells, etc., in addition to theprecautions already listed in this section, the following procedure mustbe observed:

a) In order to keep oil circulating in the line to be welded on, a portablepumping unit should be used. The lines from this unit should behooked up so that oil can be circulated and the line to be welded onwill be kept packed with fluid.

WELDING ON A TANK IN SERVICE: -

4. After the proper authorization, minor welding (such as weldingbrackets to support a remote control gauging installation) on crude oilstorage tanks may be permissible provided;

a) The oil level is static (the tank neither being filled or emptied, and thetank mixer is not in use).

b) The oil level is at least 0.30 metre above the level where the welding isto be done.

c) The minimum velocity of the wind is approximately 10 km/hour (goodbreeze).

d) An explosiometer is used at various points around the tank and itshows that there is no combustible gas mixture present at any location.This fact must be established before any welding is started and testingmust be continued throughout the welding operation.

ELECTRIC WELDING EQUIPMENT -

i) Portable electric welding equipment -

a) Protection of equipment: When used outdoors, welding machinesshould be protected against the weather.

b) Service cable and connectors: When it becomes necessary to connector splice lengths of cable one to another, substantial insulatedconnectors, of a capacity at least equivalent to that of the cable, shouldbe used. If connections are effected by means of cable lugs, thenthese should be securely fastened together by more than one bolt togive good electrical contact. The exposed metal parts of the lugsshould be completely insulated.

GAS WELDING AND CUTTING -

i) The following precautions should be observed in the storage, handling,and use of oxygen and acetylene cylinders, fittings, and hose:


a) Cylinders should be stored in a definitely assigned place away fromsources of heat such as a radiator, stove, etc. Cylinders which arestored outdoors should be protected against extremes of weather.Oxygen cylinders should not be stored near reserve stocks ofacetylene or other fuel gas cylinders, or near any other substance likelyto cause or accelerate fire. Pure oxygen will not burn, but it supportsand accelerates combustion, and this will cause oil and other similarmaterials to burn with great intensity.

b) Cylinders of oxygen and acetylene should be used in rotation as theyare received from the supplier.

c) Always describe oxygen by its proper name "oxygen", and never "air".Never use oxygen for compressed air. A serious accident may result ifoxygen is used as a substitute for compressed air. Oxygen must neverbe used in pneumatic tools, on oil preheating burners, to start internalcombustion engines, to blow out pipelines, to "dust" clothing or work, todry hands, for pressure tests of any kind, or for ventilation.

d) Oil or grease must not be used on or around an oxygen cylinder,cylinder valve, regulator, fitting or hose.

e) Oxygen and acetylene cylinders should be placed with the valve endup whenever they are in use.

f) When cylinders are moved by hand, they may be tilted, and rolled attheir bottom edge. Dragging and sliding of cylinders should be avoided.Cylinders should not be dropped, nor should they be permitted to strikeanything violently.

g) Valve protection caps should not be used for lifting cylinders from onevertical position to another.

h) Cylinders whether in use or in storage must be secured to preventthem from being knocked over.

i) Cylinders in use should be kept far enough away from the welding orcutting operation to prevent their coming in contact with sparks, hotslag or flame.

j) Cylinders should not be placed where they might become part of anelectric circuit such as a ground return circuit for an arc- weldingmachine. Never strike an arc against a cylinder.

k) Cylinders should not be used for any purpose except those specifiedby the supplier. Do not experiment, in any way, with an unknown gasin an unknown cylinder.


l) If a valve leak develops, the cylinder should not be used. It should betagged for the advice of the supplier and placed outdoors away from allsources of ignition, where the contents may be expelled harmlessly.

m) Before a cylinder is placed in use, the valve should be opened slightlyand closed immediately to clear the valve of dirt which might enter theregulator. This must not be done near other welding work, sparks,flames, or other sources of ignition.

n) To determine if tight connections have been obtained in the installationof the pressure regulator and other connections, soapy water may beused.

o) The oxygen cylinder valve should be opened slightly, after theinstallation of the regulator, so that the high pressure gauge hand willmove slowly. The valve should never be opened suddenly, and theoperator should not stand directly in front of the gauge faces.

p) Welding hose is manufactured in distinctive colours for readyidentification. Red is the recognized colour for acetylene and black foroxygen. Hose connections on the regulator should similarly be markedfor identification.

q) If parallel lengths of oxygen and acetylene hose are taped together toprevent their becoming tangled, not more than 4" out of each 8" shouldbe covered with tape.

r) The hose should be inspected frequently for leaks, worn places, andloose connections. Leaks may be detected by immersion of the hosein water under normal working pressure. A defective hose must not beused.


OIP-3

OIL INDIA PIPELINE

HOT TAPPING / HOT TIE INAUTHORISATION

Location ________________________________________________________ Date _____________

Description of Work

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Authorised Welder Name _______________________________

Date of Hot Welding Training _______________________________

Pipeline Engineer in Charge Name _______________________________

Date to be carried out _______________________________

Authorised by Chief Engineer _______________________Date _________________

Special Precautions to be adopted

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

____________________________________________________________________


SECTION A-7

CORROSION CONTROL INSPECTIONS

A. Objective and Responsibility - To maintain a positive controlprogramme against corrosion attack, so as to ensure the continuousand uninterrupted operation of the pipeline facilities. The administrationof this programme is the overall responsibility of Deputy Chief EngineerPipeline (Electrical & Cathodic).

B. Minimum and maximum Pipe To Soil Potential: -

1. Minimum Pipe To Soil Potential: - A minimum cathodicpolarization potential of negative 100 mV between the pipe surfaceand a stable reference electrode in contact with the electrolyte asper OISD/STD-188 & NACE-RP 0169-96.

2. Maximum Pipe To Soil Potential: - A maximum polarizationpotential of negative 1200 mV (instant ‘OF’ potential). Thispolarization potential is measured with respect to copper/coppersulphate reference electrode as per OISD/STD-188.

C. Inspection and reports: -

1. Rectifiers: – Once in every 10 days inspection of all rectifierinstallations and record of instrument readings are to be madeby responsible Superintending/Senior Station Engineers andreported on CATH-1 for the pump and repeater station rectifierunits.

2. Drainage point PSP: - Once in every 10 days the pipe to soilpotentials at drainage points for Pump and Repeater Stationsare to be checked by Engineer/Junior Engineer (Electrical &Cathodic) and reported on CATH-1.

3. Pipe-to-soil potential: - Monthly readings of Pipe-to-soilpotentials at the specified test points are to be taken andchecked by Engineer/Junior Engineer (Electrical & Cathodic)and reported on OIP-5.

C. Semi-annual inspections and reports: -

1. Pipe-to-soil potential - Semi-annual readings are to be taken withcorrosion voltmeters on both sectors at all test points (Every fifthkilometer post). This information to be plotted on a strip chart by theSuperintending Electrical and Cathodic Engineer to graphically indicatethe degree of pipeline protection on each sector.


D. Annual inspections and reports: -

For Cased crossings, block valves, suspension river crossings, annualreadings are to be taken with cathodic voltmeter by the SuperintendingElectrical & Cathodic Engineer once in a year during the period fromNovember to February and any defect observed will be reported toSuperintending / Senior Engineer (Pipeline Maintenance) for necessaryrepair.

E. Specialised inspections and reports -

1. Exposing the pipeline - Whenever pipeline is to be exposed, theDeputy Chief Engineer (Pipeline Maintenance) will notify the DeputyChief Engineer (Electrical and Cathodic). If the area in which theexposure will be made is one requiring additional corrosion study, theSuperintending Electrical & Cathodic Engineer shall be present.Normal conditions of coating and pipe need not be reported, however,conditions of poor coating, corrosion evidence etc. will be submitted onOIP-2 to the Chief Engineer Pipeline (Operations).

2. Holiday surveys - Electronic holiday surveys to determine coatingcondition will be made in area where protection is difficult to maintainand severe corrosion conditions are known to exist or develop withtime. Any coating defect observed will be reported to Deputy ChiefEngineer (Pipeline Maintenance) for necessary repair.

3. Operating facilities taken out of service:- When a facility (pipe,meter, station etc.) is taken out of service, the Superintending/SeniorEngineer (Pump Station) will notify the Senior Engineer/Engineer(Electrical and Cathodic) in order that he may inspect the condition ofthe internal surfaces and ensure the continuance of cathodic protectionto the remaining and adjoining facilities.

4. Internal pipe surface:- Internal pipe surface will be examined at thetime of line cuts. Additional checks for internal corrosion will be madeby analysis of pig run residues. Laboratory analysis of pig run residueswill be reported by Superintending Engineer (Electrical and Cathodic)in monthly report (OIP-4).

5. PSP readings of Insulating Joints: -PSP readings of Insulatingflanges of Station Inlet and Outlet valves should be taken monthly tocheck the integrity of the insulating joints (IJ) and will be reported onthe cathodic engineer’s monthly report (OIP-4).


CATH-1OIL INDIA PIPELINE

TRANSFORMER/RECTIFIFIERS AND DRAINAGE POINT PSP

Return for period ending ______________________________________20 ________

Station Date SerialNo

Current Voltage Drainage

Point PSP

Remarks

Signature ________________________Designation ______________________

Date ____________________________

_________________________________

Readings taken and prepared by Junior Engineer (Electrical & Cathodic)

Distribution: -

q Original - Deputy Chief/Superintending Engineer (Pump Station)

q Duplicate - Superintending Engineer (Electrical and Cathodic), Base

q Triplicate - Deputy Chief Engineer (Electrical and Cathodic), HQ



CATHODIC ENGINEER S MONTHLY REPORT

Week Ending ______________________________________________ 19 ________

DATE DESCRIBE WORK ACCOMPLISHED DURING WEEK

INSULATING JOINT INTEGRITY REPORTSTATION INLET IJ: PSP READING-

STATION OUTLET IJ: PSP READING-

_______________________________________

Engineer/Junior Engineer (Electrical & Cathodic)

Distribution: -

q Original - Engineer (Electrical and Cathodic)

q Duplicate - Senior Engineer (Electrical and Cathodic)

q Triplicate - Superintending Engineer (Pipeline Maintenance), Base

q Quadruplicate - Deputy Chief Engineer (Electrical and Cathodic)

Enter remarks or sketch on back of sheet



RECTIFIER DATA SUMMARY

Month of _________________________ 20______

Operating

Current

Station TransformerRectifierNumber

Voltage

Trans-former Oil

Level

BreatherOil

Level

SilicaGel

Condition

Km.Post

Number

Rectifier Pipeto Soil

Voltage

_____________________________________

Engineer/Junior Engineer (Electrical & Cathodic)

Distribution:

p Original - Deputy Chief Engineer (Electrical & Cathodic)

p Duplicate - Senior Engineer/Engineer (Electrical & Cathodic)

p Triplicate - Superintending / Engineer (Pump Station)


SECTION A-8

VALVE INSPECTION

A. FUNCTION AND OBJECTIVE - The objective of this inspectionprogramme is to provide safe and proper operating valves for useduring an emergency, and during the course of normal operations.

B. CLEARANCE FROM DESPATCH CONTROL CENTRE: - Priorclearance is to be obtained from Despatch Control centre in the eventa valve is operated from ‘OPEN TO CLOSE' or ‘CLOSE TO OPEN' tocheck the operation of the valve. After inspection, Despatch Controlcentre and Deputy Chief Engineer (Pipeline Maintenance) will benotified of any abnormal operating conditions.

C. SEMI-ANNUAL INSPECTION - Prior to pigging operation and duringthe months of April and November of each year, all main line valvesare to have the bevel gears inspected and then operated a few turnand returned to their original position. During the operation of eachvalve its operating condition is to be checked and corrections madewhere necessary. Such items as the condition of the gears, gearlubrication, ease of operation, condition and position of indicator, watertightness of bevel casing gasket and seals around indicator, etc.,should be checked.

D. REPORTING - Form OIP-6 will be used to report the results of each ofthe valve inspections outlined above.

E. RESPONSIBILITY - The administration of the above tests andinspections is the responsibility of the Deputy Chief Engineer (PipelineMaintenance) and will be carried out by the Base Pipeline/StationEngineer in-charge.


OIP-06.doc


SECTION A-9

PIGGING AND LINE SCRAPING

A. Function and Objective - To clean wax deposits from the inside of thepipe in order to restore the original line capacity, and to retardcorrosion by reducing the amount of corrosive material inside the pipe.

B. Responsibility - The overall responsibility of coordinating all pig runsis that of Deputy Chief Engineer (Oil Movement). SuperintendingEngineer (Oil Movement) is responsible for the security of the pig whenin the line and will issue instructions to Superintending./SeniorEngineers (Pump Stations) concerning launching and receivingschedules, and intermediate security checks.

C. Frequency - Deputy Chief Engineer (Oil Movement) will be responsiblefor ordering scraper pig runs when the line capacity has deterioratedgreater then 5%. Depending on requirement, scraper pig shall be runmonthly in the pipeline section between Pump Station No.1 and PumpStation No. 3 and this monthly pig run may be extended up to RepeaterStation No.- 3. Irrespective of this, however, both sectors includingdelivery lines will be pigged at least annually.

D. Security - The progress of the pig in any sector will be tracked by theDuty Oil Movement Engineer and shall be intimated to the respectiveEngineers-in-charge of the stations. In case of loss of any pig in theline, the course of action shall be decided by Deputy Chief Engineer(Oil Movement).

E. Inspection - All pigs will be inspected by the respective Engineers-in-charge of the stations and the condition of the same shall be reportedto Deputy Chief Engineer (Oil Movement), Deputy Chief Engineer(Operations) and Deputy Chief Engineer (Pipeline). Detailed report ofthe Pigging operation shall be sent to Deputy Chief Engineer (OilMovement)/Superintending Engineer (Oil Movement). Superintending/Senior Engineer (Electrical & Cathodic) will inspect all pig run residuesfor assessing internal corrosion implications.

SECTION: A-1 GROUND PATROL AND LEAK SURVEY INSPECTION … · 2010. 4. 23. · Pipeline Operation...

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Transcript of SECTION: A-1 GROUND PATROL AND LEAK SURVEY INSPECTION … · 2010. 4. 23. · Pipeline Operation...