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Bharat Petroleum Corporation Limited (BPCL) intends to re-route 45-kilometres of its petroleum products pipeline named Mumbai-Manmad-Mangliya- Piyala/Bijwasan (Delhi) Pipeline (MMBPL) to ward off a potential disaster in Mumbai. 
In its pre-feasibility report (PFR) on the re-routing project submitted last month to the Central Government, BPCL says that the pipeline’s Mumbai-Mangliya section was subjected to Intelligent Pigging (IP) in 2009. IP revealed that some section of pipeline in Mumbai and its outskirts has deteriorated to a “great extent and needs replacement.”
IP is a mechanism by which oil and gas companies assess, clean and repair the pipelines with aid of a device called pig. The device moves through the pipeline without disrupting the flow of fluids. 
The IP report of the 110-km Mumbai Washala section shows that the first 40 Km of the length of the pipeline is “seriously affected”. As many as 960 out of the total 1134 defects detected lie in this section.
The Rs. 277.41-crore project envisages rerouting of 45 km of pipeline (40 Km on shore & 5 Km off shore) from SV1(Agarwadi in Mumbai) to Ch51 (near Janval village in Kalyan). The re-routed section of the pipeline would pass through Vashi Creek and Ulhas River. 
The pipeline section between SV1 to SV5 currently passes through nullahs, storm water drains, roads, thickly populated residential areas, railway tracks and concrete piles. This section is thus inaccessible for approach and repair of the pipeline. 
The report says that a few other utility pipelines belonging to GAIL, MGL, HPCL MCGM, TMC RIL etc. cross the degraded section of BPCL pipeline between SV1 to SV5. 
It observes: “Infrastructure development work in the vicinity of the MMPL pipeline is taking place in the form of widening of roads and culverts thereby making the situation highly vulnerable and imposing risks to the existing pipeline. Any leaks/damage in the high pressure line can cause disaster in thickly populated areas.”
The pipeline can haul six million tonnes of petroleum products per annum (6 mtpa). It thus accounts for offtake of 50% of the output of the company’s refinery in Mumbai. 
The project would not result in increase in the pipeline’s length or its carrying capacity beyond 10% of the original capacity of 6mpta. After the completion of the project, BPCL would leave the replaced section of the pipeline buried at the existing location. It would be just flushed with water and “left as such in the existing condition after rerouting. Degasification of existing buried pipeline is not required while it shall be closed by hot tapping method.”
The 1500-km MMBPL has been laid and extended in phases. The first section from Mumbai to Manmad spread over 252 km was commissioned in 1998. The last extension of the pipeline from Mangliya in MP to Bijwasan in Delhi was completed in March 2007. 
 
 
 
 

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0 #1 muado.Info 2018-07-10 01:48
i really like your blog. Very useful informations.
Thx
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You are here: Home Oil & Gas Edgy BPCL to divert 45-km stretch of its pipeline in Mumbai