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#dnaspecial: Consultant wants 2 UPS units on monorail replaced

Monday, 30 June 2014 - 8:44am IST | Place: Mumbai | Agency: dna

Just five months since the Mumbai Monorail was commissioned, the project consultant has raised technical issues with regard to the UPS system at two stations and asked the Mumbai Metropolitan Region Development Authority (MMRDA) to replace the units.

Louis Berger, the organisation appointed as project management and proof checking consultant, has stated in a letter that the UPS units at Wadala Depot and Bhakti Park stations have not functioned as is desirable and were not reliable.

The consultant has stated in a letter to the transport and communication department of MMRDA that Scomi Engineering, which is managing the operations and maintenance, has had problems with the UPS system. dna has access to the letter.

To be precise, it is the signalling department that has raised concerns. It said there were instances when the power tripped at Wadala Depot and Bhakti Park stations and the UPS or backup system did not function as it should have ideally done.

UPS, or uninterruptible power supply, is an apparatus that provides emergency power supply in the event that the main supply fails.

Signalling is a crucial component of the rail system and any failure could jeopardise the safety of trains and the passengers. Therefore, the concerns raised by Scomi would have to be addressed urgently.

However, UPS Madan, MMRDA commissioner, denied there was any such problem. Asked about the issue described by Louis Berger, Madan said: "There is no such issue which requires replacement of the UPS system."

There are seven stations on the 9-km stretch from Chembur to Wadala that was opened on February 1, 2014 in the first phase. The second phase connecting Wadala with Sant Gadge Maharaj Chowk in south Mumbai, a distance about 19 km, is expected to be completed by mid-2015.



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