Security Tracking System

Security Tracking SystemPMHBL desires to implement the Security Tracking System (STS) which will enable the company to monitor its Security Line walkers who walk along the pipeline for daily security checks. It is to cross check Security personnel by having real-time information about their position, speed, stoppages, detours . The data should be available in the central database where users can see online status of Security Personnel on digital maps, along with diagnostic reports and receive band real-time alerts on mobile devices.STS - FeaturesReal time information about Line walkers speed,position & detour etc.Multiple level of security loginsMonitoring of security line walkerReal time (Live) & Replay Tracking on mapDiagnostic advanced reportsReal time alerts on mobile devicesGroup management

Line Walkers status on Display

Live Line walker tracking

Cathodic Protection

PIPELINE PATROLLING Each operating company shall maintain a periodic pipelines patrol programme to observe surface conditions on and adjacent to the Pipeline right to way, indications of lack, construction activity other than performed by the company and other factors affecting the safety and operation of the pipeline. Patrolling (Aerial/Ground) of On-shore Cross Country Pipelines shall be carried out at the following intervals.i) Liquid Petroleum Pipelines in urban areas - Once in a fortnight. ii) Liquid Petroleum Pipeline in other areas - once in a month. iii) LPG Pipelines - Once in a week.iv) Natural Gas Pipelines - As specified in ANSI B 31.8 Clause 851.2

RIGHT OF WAY INSPECTION The right of way shall be inspected and maintained once in a year to ensure clear visibility of ROW/ROU, access to maintenance crew along the ROW/ROU, valve locations and other pipeline facilities. All pipeline markers/kilometer posts and other signs/specific indication marks shall be maintained once in a yearIntelligent Pigging The pipeline should be inspected once in 5 years for corrosion / dents / pits etc. by means of electronic / intelligent pigging Note 3. The results of subsequent inspections shall be compared with original commissioning data in order to assess the health of the pipeline and subsequent periodicity of intelligent piggingSTATIC LEAK TEST Static Leak Test of the pipeline shall be performed once in five years using the liquid transported through the pipeline Note 3. The capacity test is used only to quantify the pressure and liquid containment capability of an existing Pipeline SystemMONITORING OF EXTERNAL CORROSION4.6.1 Pipe to Soil Potential (PSP) Readingi) PSP readings at feeding points shall be monitored fortnightly.ii) The PSP reading at the test lead points for entire pipeline shall be taken once in a quarter. The PSP survey results shall be plotted graphically to identify and locate cathodic holidays. The minimum pipe to soil potential shall be more negative than - 0.85 volts with respect to copper/copper sulphate half cell. In areas where anaerobic bacteria are active minimum PSP shall be more negative than - 0.95 volts instead of - 0.85 volts. Over protection of coated pipelines shall be avoided by ensuring that polarisation potential is below - 1.2 volts with respect to copper/copper sulphate half cells. Polarisation potential can be measured at a given location on a coated pipeline by measuring pipe to earth potential immediately (within the first second or two) after simultaneously interrupting the current output from all cathodic protection sources affecting that portion of the pipeline.

The following schedules/activities shall be followed to monitor internal corrosioni) Effectiveness of corrosion mitigation measures checked once in a year by analysing the corrosion coupon. ii) Electrical resistance probes may be installed for monitoring the effectiveness on corrosion mitigation measures and reading should be checked once in a quarter. iii) Whenever the sections of the pipeline are running overground, ultrasonic thickness measurements of the pipeline shall be taken once in two years (ref. section 4.3.1).iv) Whenever repairs to the pipeline are carried out, internal visual inspection shall be done to supplement ultrasonic thickness readings taken externally.

PIGGING4.4.1 Descaling The frequency of descaling of pipelines transporting crude petroleum, petroleum products and natural gas shall be as under:i) Non ATF Petroleum Product Pipelines - Once in six months. Ii) ATFP pipelines also carrying other petroleum products - Once in a quarter.iii) Dedicated ATF Pipelines - Once in a year.iv) Crude Oil Pipelines - Once in a year. v) Crude Oil pipelines(Injecting Sections) - Once in a quarter.

Pearson SurveyPearson / CAT / DCVG Survey shall be carried out once in three years Note 3. 4.6.3 Continuous Potential Survey Continuous Potential Logging (CPL) survey should be carried out once in five years.4.6.4 Insulating Joint/Coupling Inspection Insulating joints and couplings shall be inspected once in a year.4.6.5 External Corrosion Control for above ground sections of Piping Above ground piping and accessories shall be inspected visually once in a year for external corrosion. ANSI B.31.4 shall be referred for guidance.

6 Soil Testing+If any industrial effluent is flowing over the ROW/ROU or any environmental change is noticed on the ROW, the soil samples shall be tested for determining the efficacy of the existing coating and wrapping of the pipeline.

MONITORING OF INTERNAL CORROSION Internal corrosion is a function of what the pipeline contains and conveys. Presence of corrosive constituents and other contaminating impurities in the transported fluid may lead to internal metal loss in the pipeline resulting in general corrosion or pitting type of corrosion. Such constituents could be due to salinity of sea water, presence of carbon-dioxide together with moisture etc. Presence of sulphur dioxide can lead to serious sulphide stress cracking of steels which is essentially not a metal loss, but causes stepwise cracking in steel. For this type of corrosion, its mitigation can be done by injecting chemical inhibitors along with the product flow. The sulphide stress cracking can be mitigated by treating steel with certain alloying elements and controlling its hardness. Corrosion mitigation by using inhibitors may also help but only in case of certain specific types of fluid constituents. Another method of safe guarding against internal corrosion could be by providing lining