As TUNELBUILDER published in the following article: “NFM TBM at Caltanissetta“, the equipments have begun arriving in work teams TBMs producer, French NFM.
NFM is a good WeWalter customer and within the TBM is traveling to Caltanissetta our refuge chamber for 20 people.
Source TunnelBuilder.com The first parts of the 15 m-diameter, 100 m-long NFM TBM ordered for the twin 3.9 km tubes of the Caltanissetta road tunnel have arrived at site. The tunnel is part of the refurbishment of a 28 km section of highway from km 44 to A19 interchange on SS640 Porto Empedocle, in Caltanissetta and Enna provinces. The drives will commence before end-2013. Click it/107 and here for tunnelbuilder archive. Visit http://cmcgruppo.com and www.nfm-technologies.com.
Acquisition of a major order from our big customer, the company ABB SPA. The order includes 21+1 reel drums of medium voltage 36 kV.
End customer: GRTE SONELGAZ – ALGERIA.
WeWalter has worked for many years with the company ABB in both cases: for the realization of reel drums and the construction of prefabricated containers.
Structure in steel sheet and painted – GREY RAL 9006 – or hot-dip galvanized All external screws (in sight) class 8.8 galvanized washers. Accessories (flanges – spacers, etc..) Galvanized cold (or warm if required) Stainless steel external screws Painting and special stains
PROCESS OF PAINTING – SURFACE PREPARATION
Possible sandblasting for the elimination of oxide. Pickling and degreasing. Primary coat of paint within 12 hours max. the treatments described.
PRIMARY PAINTING A strong base of epoxy zinc content. Film thickness 40 microns. Grey color
PAINTING FINAL Powders based thermosetting polyester resins, modified with epoxy resins,. Film thickness 40 micron Heat resistance: 24 hours at 100 ° C (white) Corrosion resistance: Salt Spray ASTM B 117-73 100 to 500 hours Adherence: Grid DIN 53151 – 100% G.T.O. Total thickness of the film: from 80 to 120 microns
PROCESS OF ZINC
SURFACE PREPARATION Possible sandblasting for the elimination of oxide. Pickling and degreasing.
ZINC TREATMENT Obtained by heating with complete immersion of the workpiece. Thickness min. of the film = 50 microns approx.