may 042015

bypass_system_stejasaSTEJASA has been awarded the supply of three bypass systems downstream three Siemens SGT6-5000F gas turbines and one GE FRAME 6F. The scope of supply will include:
· GT diffuser
· Hydraulically operated diverter dampers: three units 6.500 x 6.500 and one unit 4.200 x 4.200mm
· A maintenance guillotine
· A silencer
· Bypass stack (40m above ground level)
· Steel structure
· AWL, ladders, platforms, etc…
The delivery is expected by the end of 2015.

abr 282015

bypass_stejasaSTEJASA has been awarded the supply of two bypass systems downstream two Westinghouse W501D5 gas turbines. The scope of supply will include:
· GT diffuser
· Primary silencer
· A hydraulically operated diverter damper (5.100 x 5.100 mm)
· A maintenance guillotine
· A secondary silencer
· Bypass stack (40m above ground level)
· Steel structure
· AWL, ladders, platforms, etc…
The project required extremely severe sound pressure levels. This is why STEJASA will supply two silencers (primary and secondary) as well an acoustic wall. The delivery is expected by the end of 2015.

dic 012014

STEJASA has been awarded 4 (four) gas turbine exhaust systems by DURO FELGUERA as part of SPE’s six combined cycle power plant expansion. STEJASA will deliver the bypass systems, with diverter dampers, to the plant located in DJELFA. The 6.500 x 6.500 diverter dampers will be running downstream six GE Frame 9FA gas turbines. The plant’s total power output will reach 1,280 GW. STEJASA’s scope of supply will include:

· GT to diverter transition

· A 6.500 x 6.500 hydraulically operated diverter damper.

· A blanking plate

· Silencer

· Steel structure

· Expansion joints

· Ladder and platforms

· AWL, lightning arrestors, CEMS ports, etc..

The four units will be delivered in Algeria by March 2015.

More about SONELGAZ’s CCPP expansion:
“SPE (Société Algérienne de Production de l’Electricité), a subsidiary of the Sonelgaz group, has signed six contracts for the construction of CCGT power plants in Algeria, with a capacity ranging between 1,200 MW and 1,600 MW each. The six projects are part of Sonelgaz’s 2013-2017 development plan and will require a total investment of about US$4bn. South Korean consortium Hyundai E&C – Deawoo will build the 1,376 MW Oumache CCGT plant in the Biskra wilaya and the 1,436 MW (1,600 MW gross) Bellara plant in the Jijel wilaya. Samsung C&T will be in charge of the construction of the Sonaghter plant in the Mostaganem wilaya (1,480 MW) and of the 1,202 MW Naâma plant (Mecheria), while Duro Felguera will carry out that of the Djelfa plant (1,280 MW) in Ain Ouessara. The construction of the 1,280 MW Kais CCGT plant in the Khenchela wilaya was awarded to GS-Daelim. They are all expected to be commissioned in 2017.”

Another outstanding project in Mexico

 Projects  Comentarios desactivados
jun 172014

STEJASA has delivered a complete bypass system for a gas turbine for the “Cogeneración ciclo combinado Refinería Complejo Pajaritos Coatzacoalcos, Veracruz” in Mexico. The experience of working with the Spanish EPC contractor OHL-SENER has been a great experience. The bypass system, downstream a Trent 60 from Rolls-Royce, includes dampers, bypass stack, silencer and accessories.

nov 152013

This cogeneration plant is installed inside the ARTENIUS factory, in Sines – Portugal, who produces Purified Terephtalic Acid. It has been conceived to supply high-pressure steam and electricity to its neighboring PTA plant, which is one of the largest of its kind. After only one year in service, the existing diverter damper, supplied by one of our competitors, was not able to meet the required technical specifications. Therefore VEOLIA decided to call STEJASA to replace the existing diverter damper and repair guillotine as well as two fresh air dampers. After confirming STEJASA’s capabilities, VEOLIA granted us the contract under a full turn-key modality. Our diverter damper, in operation since this September, has the following characteristics:

Downstream a gas turbine:   GE Frame 6B
Gas path size (free flow):   3.519 x 3.519 mm
Operating & design temperature:   571 / 610 ºC
Operating & design pressure:   20 / 50 mbar
Flow / Gas speed:   146,2 kg/s – 28 m/s
Casing material:   Carbon steel
Blades material:   Stainless steel
Shafts material:   Stainless steel
Insulation:   Internal with 150 mm of ceramic fibre
Sealing system:   100% tightness with seal air fans
Actuator   Pneumatic with modulating function and emergency shutdown
sep 192013

STEJASA has recently delivered a diverter damper and repair guillotine for Petroleum Development Oman (PDO). This tandem will be operating downstream a GE FRAME 9E gas turbine. For this application we have chosen our highly reliable 5.600 x 5.600mm diverter damper. This model has been on the market over 10 years with more than 50 units installed worldwide.

For more information, please contact our Sales Manager, Mr. Artigas (

abr 292013

STEJASA has been appointed by AALBORG ENGINEERING to supply two diverter dampers and repair guillotines for the TUPRAS RESID upgrading project. These two diverter dampers will be downstream 2 GE Frame 6B gas turbines. They will be 100% gas tight and operated via a hydraulic power unit. This new purchase order strengthens the relationship between both Companies.

feb 112012

NOOTER/ERIKSEN ITALY, associated to NOOTER/ERIKSEN (USA), the world’s leading supplier of natural circulation HRSG, awarded STEJASA the supply of one diverter 5600 x 5600 mm damper for the project Amal PDO in Oman.

The diverter, with hydraulic actuator and 100% tightness, will be installed downstream a GE Frame 9E gas turbine. STEJASA’s scope of works will also include a ducting extension, a repair guillotine and the expansion joints.

STEJASA has a long reference list for diverter dampers, exceeding 100 units sold during last 10 years.

dic 102011
Expanding into emergin markets-Latin America

Expanding into emergin markets-Latin America

STEJASA has successfully completed the supply of 3 complete sets of dampers for Macchi HRSG installed at Reficar Refinery expansion project in Cartagena de Indias (Colombia).

With this contract, STEJASA enlarges its track record in the growing market of Latin America, where several contracts were signed in the past years.

Based in Cartagena, Reficar is one of the most efficient and promising refinery Plants in Colombia.