MODERN TECHNOLOGIES OF CONSTRUCTION AND QUALITY
ASSURANCE, APPLIED BY THE COMPANY
JSC "Neftegazspetsstroy" applies the advanced scientific
and technical, design and organizational decisions to construction
of a linear part, new effective materials, mechanisms and
the equipment, leaders to improvement of quality of civil
and erection works, reduction of terms of constructions, economy
of capital investments.
So, for welding and assembly operations JSC "Neftegazspetsstroy"
has been successfully applying the CRC- Evans complex designed
for automatic welding of non-rotary pipe joints. For this
purpose the welding and assembly column of the accelerated
rate is at our disposal with all the units and tents for various
diameters of pipelines.
All the welding units are fitted with modern sources of welding
current ÄÑ-400 manufactured by "Lincoln Elektrik".
Besides, the structure of the column includes two specially
equipped pipelayers Ä 355Ñ enter. These pipelayers are intended
for work on processing edges under special cutting of mark
PFM, complete with the hydraulic station, beveling instruments,
lifting equipment, cradles, including pipe-bending machines
with burnishing broach and gas cutting machines "Orbita".
JSC "Neftegazspetsstroy" has the trained and certified
staff of CRC automatic welding machines operators with wide
experience and high qualification. A group of NGSS managers
in charge of the teams operating CRC welding equipment were
trained in the United States. The CRC automatic welding
procedures were successfully implemented during the construction
of projects listed below:
- Gas - pipe ND1400 mm. "Yamal-Europe" - 45 km.
in Belarus'; 2200 joints were welded by CRC-Evans complex.
Gas - pipe ND1200 mm. "Samsun-Ankara" - 170 km. in
Turkey; 9736 joints were welded by CRC-Evans complex.
- Gas - pipe ND1400 mm. "Russia-Turkey" - 100 km.
in Stavropol region; 100 km of pipeline were welded, of all
joints 4800 joints/62 km. were welded by CRC-Evans complex in
- Oil pipeline ND 910 mm. "Haud-el-Hamra - Arzev"
- 266km. in Algeria; 255 km./22540 joints were welded by CRC-Evans
complex in 2002." Oil pipeline ND 600 mm. "Kenkiyak
- Atyrau" - 110km. in Kazakhstan; 108.8 km./9640 joints
were welded by CRC-Evans complex in 2002.
Thus, 48916 pipe joints between O600mm and O1420 mm were
welded by the CRC automatic welding machine in 2002.
| The highest productivity of welding
and assembly works per shift with the use of the CRC automatic
welding equipment in the process of gas - pipe "Samsun
- Ankara" (ND1200mm) construction ranged up to 221 joints.
The maximum productivity per shift reached:
- 154 joints in the process of gas - pipe "Russia - Turkey"
- 266 joints in the process of Algerian oil - pipe (ND900mm)
- 170 joints in the process of oil - pipe "Kenkiyak - Atyrau"
(ND600mm) construction, resulting in 110 km construction accomplishment
within 3 months.
During the realization of all above - listed projects, where
welding and assembly works were carried out with the use of
the CRC automatic welding equipment only 1.5% of welded joints
Apart from CRC automatic welding procedure JSC "Neftegazspetsstroy"
successfully applies the "Innershield" semiautomatic
composite-metal wire welding method.
This technology was applied when construction of:" 20
km section of "Mozir - Brest" oil -pipeline in Belarus'
- 14 km of gas - pipe "Yelets - Novopskov"(ND1200mm)
- 21.5 km of gas - pipes-collectors from gas wells systems
to ÓÊÏÃ (Complex gas preparation plant)-1C, 3C of Zapolyarnoye
NGKM (oil/gas condensate field) were welded in 2002 (ND 426mm
and ND 325 mm). In all, in 43.9 km. of pipes O 325?426mm were
welded in 2001-2004
" Internal production collector from ÖÄÊÑ (Central compressed
air plant) to ÓÊÏÃ (Complex gas preparation plant)-1Ñ - 8,7
- Gas - header ND 219mm ÖÄÊÑ (Central compressed air plant)-ÀÃÐÑ(Automatic
gas distribution station) I and II lines - 13,2 km (in 2002
13,2 km/1320 joints were welded.
- Compressed air plant "Stavropol'skaya" joining
up unit's assembly and pig launcher construction of gas-pipe
"Russia-Turkey"(ND1420 mm.) section 0 km - 100 km
in Stavropol' region.
- Pig launcher/ receiver and shutoff valves of oil pipe "Kenkiyak
- Atyrau" (0 km-100km) in Kazakhstan.
- Line accessories of "Haud - el - Hamra - Arzev"
oil pipeline (ND 900mm), 418 - 682 km.
in 2002-2004, 6440 joints on pipes of different diameters
(O325mm?O1420mm) were welded with the use of semiautomatic
welding complex "Innershield".
"Neftegazspetsstroy" integrity is preserved by
the workers employed by the head office and subsidiaries,
who adhere to the Company's economic and social policies thus
ensuring NGSS participation in major investment construction