DETAILED DESIGN OF A SEWER MAIN INSTALLATION BY HDD AND TRAINING OF THE ENGINEERING PERSONNEL

Pubblicato il maggio 30, 2016 da Renzo Chirulli

Client: TEA Spa – Italy

Year: 2011

What I did: I made the detailed design of o channel crossing, by HDD, for the installation of a pressure sewer main for a total length of 320 m (1.000 ft); this project was part of a specialized training program that I carried out with the engineering personnel of the company and that led to the completion of the project of installation of the whole sewer main, entirely made by HDD, for a total length of 5,9 km (3,7 miles), divided in 21 HDD crossings.

DETAILED DESIGN OF A SEWER MAIN INSTALLATION BY HDD AND TRAINING OF THE ENGINEERING PERSONNEL

Plan view and longitudinal section of an HDD crossing - DN900 steel pipe, 464,0 m long.

Job-site layout at the start point of the directional borehole.

HDD IN DIFFICULT ALLUVIAL SOIL

Pubblicato il maggio 30, 2016 da Renzo Chirulli

Client: IMET Spa – Italy

Year: 2007

What I did: detailed design and work direction of the installation of a DN450 HDPE drainage pipe along a curved drilling path with sharp bending radius in alluvial soil with polygenic boulders, for a total length of 180 m (590 ft) – Selva di Val Gardena, Italy.

HDD IN DIFFICULT ALLUVIAL SOIL

Longitudinal section and plan view and of the Selva di Valgardena project, for the installation of a DN315 HDPE sewer pipe along a curved drilling path in alluvial soil with polygenic boulders.

Start point - the rig during the pilot bore stage.

CIPP TECHNOLOGY HANDBOOK

Pubblicato il maggio 30, 2016 da Renzo Chirulli

Client: S3 Soncini Spa – Italy

Year: 2004-2005

What I did: I wrote the whole know-how of the company in an internal handbook containing all the instructions concerning production procedures, calculation methods and in-situ procedures of the CIPP technology. I also organized and carried out the specialized training for engineers and operators of Soncini’s licensees.

CIPP TECHNOLOGY HANDBOOK

Studying the in-situ process for CIPP - a sewer by-pass.

Studying the in-situ process for CIPP - the inversion header.

Studying the in-situ process for CIPP - the liner during the inversion stage.

Studying the industrial process for CIPP products production - the felt assembling line.

Studying the industrial process for CIPP products production - calendering of the impregnated liner.

Studying the industrial process for CIPP products production - loading of the impregnated liner in a refrigerated truck.

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DESIGN OF THE CROSSING BY HDD OF A ROCKY HILL

Pubblicato il maggio 30, 2016 da Renzo Chirulli

Client: Appennino Energia Srl – Italy

Year: 2009-2010

What I did: I made the design of the installation by HDD, in medium to hard and high abrasive sandstone, of a pressure water HDPE pipe, DN630 mm (25 in), for a total length of 530 m (1,740 ft) along an uphill drill path, for a mini hydro-power plant.

DESIGN OF THE CROSSING BY HDD OF A ROCKY HILL

Piastroso (Italy) - longitudinal section of the hill crossing.

A sample of the seismic survey made before the detailed design.

Core sampling - part of the pre-design survey campaign.

Cross section of the borehole with the pipe to be installed inside.

Job-site layout at the exit point of the directional borehole.

CEMENT MORTAR LINING TECHNOLOGY AT MILANO

Pubblicato il maggio 30, 2016 da Renzo Chirulli

Client: Risanamento Condotte Srl – Italy

Year: 2008-2010

What I did: the R&D for the improvement of the Cement Mortar Lining (CML) technology and the detailed design and manufacturing supervision of motorized lining machines.On the application side I made the detailed design of the rehabilitation, by CML, of existing DN1000 (40″) and DN 1200 (48″) steel water mains, for a total length of 3.000 m (9.800 ft), in the City of Milano, Italy. Thanks to CML technology the Client, Metropolitana Milanese Spa, saved more than 80% of construction costs and up to 98% of earth-moving compared to a traditional open-trench replacement.

CEMENT MORTAR LINING TECHNOLOGY AT MILANO

The pressure test equipment of the cement mortar liner

The testing hole has a diameter of 25,4 mm (1

Experimental relationship between liner thickness and filtration pressure (in blue) and explosion pressure (in red).

Location of the first part of the project - DN1200 steel water main.

Plan view and longitudinal section of the first part of the project - DN1200 steel water main.

Location of the second part of the project - DN1000 steel water main.

Plan view of the second part of the project - DN1000 steel water main.

The job-site - preparation of the cement mortar.

The lining machine while working inside a DN1200 steel water main.

The lining machine while going backwards to the exit pit.

The inner wall of the water main before (right) and after (left) the rehabilitation treatment by CML.

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HDD RIVER CROSSING WITH SHARP BENDING RADIUS IN VERY DIFFICULT SOIL CONDITIONS

Pubblicato il maggio 30, 2016 da Renzo Chirulli

Client: EDIL IDRAULICA Sas – Italy

Year: 2011

What I did: I made the project management and the supervision of the installation, by HDD, of three HDPE DN 560 (22 in) pressure sewer pipes under the Foglia river, Pesaro, Italy. Three directional pilot bore, with an interaxis of just 1,5 m, along a drill path with a very sharp bending radius (70 m), were successfully drilled under the river bed, facing challenging soil conditions, with big boulders and blocks of stone in a matrix of silt and clay. Although the three pilot bores were perfectly completed, on the first alignment, after completed the first final reaming at 700 mm, the first pull-back failed due to the collapse of underground unstable big blocks of rock. Despite the prohibitive soil conditions we successfully completed the pullback of the two remaining product pipes, achieving a remarkable result in a very difficult HDD work.

HDD RIVER CROSSING WITH SHARP BENDING RADIUS IN VERY DIFFICULT SOIL CONDITIONS

Longitudinal section of the river crossing.

The pipes to be installed - DN560 PE100 pipe. Nominal diameter of the reamed borehole: 700 mm.

A complete set of preliminary survey were done before the detailed project - in the picture a 3D geoelectrical tomography.

Rock boulders in a matrix of silt and clay, represent a challenging soil condition for HDD.

Creating a laser level for depth measuring while drilling.

Continuous mud control and prime drilling fluids were crucial to face so difficult soil conditions.

The HDD rig used to complete the job (Vermeer D50 - 50.000 lbs - 23t pullback force)

The three drill strings laying underground.

Pre-reaming stage - reamer diameter 500 mm.

Final reaming stage - reamer diameter 700 mm.

The pullback stages were carried out during the night shifts to not interfere with traffic.

Pullback of the second product pipe during a night shift

The unexpected presence of big blocks of rocks, along the drilling path, made the work extremely difficult causing the block of the first pullback - in the picture the attempt to clear the drill path of the rocky blocks.

Although more than 20 blocks of rock (dimension ranging in the interval 0,6 - 1,2 m) were removed, the first pipe remained definitively stuck underground.

Although more than 20 blocks of rock (dimension ranging in the interval 0,6 - 1,2 m) were removed, the pipe remained definitively stuck underground.

LANDFILLS INSULATION BY HDD

Pubblicato il maggio 29, 2016 da Renzo Chirulli

Client: MC Scarl – Cooperativa MUCAFER Scpa – Italy

Year: 2010

What I did: I worked for the main contractor MC Scarl – Cooperativa MUCAFER Scpa, as the specialized advisor for the HDD operations in the insulation of two urban landfills, for the environmental securing of the area. In less than one year approximately 60 km (37 miles) – corresponding to more than 500 horizontal directional boreholes – were drilled through soft to hard limestone rock in order to carry out underground injections to create a bottom screen below the garbage level (total value of the HDD installations: €14M). This was the biggest project of ever for a landfill insulation made by HDD. The specialized subcontractor for HDD and soil treatments was TREVI Spa.

LANDFILLS INSULATION BY HDD

A conventional drill rig equipped with a directional dow-the-hole assembly.

A rig during the directional drilling operation.

Multiple teams were performing directional drilling at the same time.

INSTALLATION OF A GRP DN600 PIPE BY PILOT TUBING

Pubblicato il maggio 20, 2016 da Renzo Chirulli

Client: EUROSCAVI Srl – Italy

Year: 2011

What I did: I made the detailed design and work supervising of the installation, by pilot tubing, of a DN600 (24 in) GRP pipe for the connection of two ventilation shafts in the new subway line C in Rome, Italy.

INSTALLATION OF A GRP DN600 PIPE BY PILOT TUBING

Longitudinal section of the crossing by pilot tubing.

The guided boring machine used to complete the crossing.

The GBM (guided boring machine) during one of the intermediate reaming stage.

OIL PIPELINE REHABILITATION BY FLEXIBLE HIGH-PRESSURE HOSES

Pubblicato il maggio 20, 2016 da Renzo Chirulli

Client: ENI Spa – Italy

Year: 2014

What I did: I made the feasibility study and wrote the technical standard for the rehabilitation, by flexible high-pressure hoses, of two 12″ oil pipeline, each one 1.800 m long, with multiple curves. Total length 3.600 m (11.800 ft).

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PIPE BURSTING AND UV-CIPP AT THE FLORENCE AMERICAN CEMETERY OF THE WWII

Pubblicato il maggio 13, 2016 da Renzo Chirulli

Client: SPUNTON IMPIANTI Srl – ADVANCED SERVICES Srl – Italy

Year: 2012

What I did: detailed design and project management of the replacement, by pipe bursting, of concrete sewer pipes DN200-400 (8-16 in) and of the rehabilitation by UV-CIPP of concrete sewer pipes DN 250, 400, 600, 700, 800, 900 and 1000 mm (10, 16, 24, 28, 32, 36 and 40 in) for a total length of 2,5 km (1,6 miles) at the Florence American Cemetery of the WWII.

PIPE BURSTING AND UV-CIPP AT THE FLORENCE AMERICAN CEMETERY OF THE WWII