(MENAFN- The Peninsula) The Peninsula
The Public Works Authority ‘Ashghal' has achieved 1.5 million man-hours without loss time injury (LTI) since it started implementing the works of Doha South Sewage Infrastructure Project in December 2016.
Ashghal celebrated this achievement in the presence of Eng. Khalid Saif Al Khayareen, Drainage Networks Projects Department Manager in Ashghal along with representatives from CH2M, the project management consultant.
During the celebration, certificates of appreciation were presented to the project contractor, joint venture 'Bouygues Travaux Publics and 'UCC, represented by Daniel Clert.
On this occasion, Al Khayareen said: 'This important achievement in the field of workplace safety enhancement comes as a result of Ashghal's comprehensive and stringent health and safety measures which are included in the pre-qualification process for contractors applying to work on any of the Authority's projects.
The Doha South Sewage Infrastructure Project works started with excavation works for the main trunk sewer in December 2016. Over 65% of the project works are completed.
The project comprises the construction of a 16km main trunk sewer, divided into three segments, Eastern, Northern and Western. This is in addition to the design and construction of 11 shafts that will be used to excavate the main tunnel.The main trunk sewer will convey the sewage flows through pumping stations to the existing Doha south treatment works.
The project also includes the construction of seven lateral interceptor sewers with a length of about 24km, which will convey flows from areas in the centre of Doha to the main tunnel. The Project is designed to serve areas in the south of Doha and the expected population growth.The project can be linked to future infrastructure projects, and when completed, it will enable the decommissioning of more than twenty old pumping stations currently located in the residential and commercial areas in the south of Doha.
One of the important benefits of the project is the gravity based main trunk sewer that will link a number of areas in the south of Doha to the sewage network.
As a result, it will reduce the environmental impacts through the full control of odours in sewage treatment works and conveying system, and reduce other environmental problems arising from sewage overflow due to excess hydraulic pressure on the existing drainage network, where sewage flows exceed its capacity. The main trunk sewer will be excavated using two Tunnel-Boring Machines designed specifically for the geological features encountered in Doha. To minimise the footprint within the city of Doha, five shafts will be excavated using a Vertical Shaft Machine.
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