Government of the CDMX exposes contradictions in 3rd.  report on Line 12 of the Metro

The capital government accused contradictions and lack of rigor in the third root cause report of the Norwegian company DNV about the collapse of a section of the Metro line 12, for which it was rejected by the Secretariat for Comprehensive Risk Management and Civil Protection

In a press conference of only 30 minutes this Wednesday, May 11, the Government of Mexico City rejected the results of the third report on the collapse of the elevated section of Metro Line 12 prepared by the company Det Norske Veritas (DNV), as the head of government Claudia Sheinbaum herself had announced.

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Myriam Urzua Venegashead of the Secretariat for Comprehensive Risk Management and Civil Protection, said that the CDMX Government cannot accept the third report from the company Det Norske Veritas (DNV) on the collapse of the Subway Line 12, occurred on May 3, 2021, due to the fact that it presents inconsistencies and contradictions in the methodology to carry out the analysis, particularly they report that images of Google Street View for analysis.

“How can it be that a company of this magnitude bases a technical conclusion of the highest precision when Google itself warns of its limitations?said the secretary of Works and Services, Jesús Antonio Esteva Medina.

Esteva stated that there were inconsistencies in the Phase II Final Opinion, where the company says that the deformations of the beams in the collapse zone were not detectable in a simple visual inspection, however, in report III, based on in Google Street View it says that they were perceptible.

This despite the fact that Google “states in its terms of service that ‘actual conditions may differ from map results and content’”, said the official.

Likewise, he said that report III also recognizes, as in the two previous reports, that there are design errors, however, the same document says that there is the possibility that a routine inspection, such as the one defined in the manual – which the company had already said is inefficient and should be corrected – could correct a serious design error.

Similarly, the government of the Mexico City announced that there is an inconsistency on the part of the company, in which it is indicated that there were no revisions to the L12, however, in the first two reports DNV acknowledged that there were inspections in 2019 and 2020, in addition to the fact that the contract for the 2021 revision was already in place.

The report was not accepted by the Secretariat for Comprehensive Risk Management and Civil Protection, said its head Myriam Urzúa Venegas, because “it did not comply with what was established in the contract and therefore did not allow the root cause of the collapse to be clearly identified.”

“For these reasons, the company’s document has not been formally accepted by the Secretariat for Comprehensive Risk Management and Civil Protection so far, because despite responding to some of the observations we made, these are still considered deficient and insufficient” , Urzua assured.

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