Operational Safety in Power Stations

With a view towards the greatest possible operational safety, particularly high standards ha e to be met by the materials used in power stations. These also include sealing compounds, particularly those for sealing turbine parting planes. In the presence of water or steam, halogens such as chlorine and fluorine can corrode the surface structure, causing cracks to form.

Recently an OEM asked a sealant manufacturer AI Schulze to confirm that Birkosit contains no sulphur or halogen materials (chlorine, fluorine, bromine, etc) that could potentiially cause corrosion on metal surfaces. AI Schulze, the manufacturer issued the certificate to Thermax. This is now standard for all supplies for Birkosit. Birkosit now certifies that it contains no chemical substances (it is based on linseed oils instead of flammable solvents) nor contains any hazardous substance.

With the new generation turbines being manufactured by BHEL, L&T Mitsubishi, Siemens and others, it is now imperative that sealing compounds designed for turbines have to meet several key parameters:

1/? The sealing compound should not present any significant danger for the environment. It should not contain any hazardous substance that is har ful to the environment

2/? The Sealing compound should be non‐flammable or have any flashpoint.

3/? Several products contain 10‐12% by volume of methylated spirits and have flash point of 14‐20 deg C due to the solvents. This is not safe to hand e and is needs special protective clothing and needs pecial precautions as they are highly inflammable.

4/? Sealing Compounds containing solvents have a chance for solvent evaporation which is not safe and needs addition of solvents again.

5/ Sealing compounds should have a service life of 10 year the requirements on the new generation turbines.

6/ The new specifications for the next generation of SST st am turbines and SGT gas turbine will have a pressure resistance required of 250 bar to also take care of a safety margin and temeperature resistance of 900 deg C.

Meeting all the technical parameters is the product Birkosit from AI Schulze, Germany.

Leading turbine manufacturers worldwide and in India prefer to use BIRKOSIT for sealing parting plane flanges of turbine casings. Customers in India include BHEL, Siemens, Triveni, MAN Turbo, Kirloskar Ebara and several other OEs. It is also used by NTPCs, Nuclear Power Corp, Tata Power and more..

Do you know why ? Here’re the key reasons:

• BIRKOSIT is the only product WORLDWIDE designed exclusively for sealing turbine flanges.
• BIRKOSIT ‐ Dichtungskitt ? has been used for 50 years on Siemens turbines (product development 1952 with Siemens).
• BIRKOSIT is the only product that GUARANTEES a service life of 10 years
• When used in accordance with instructions and with regular servicing as required for steam and gas turbines, we guarantee a service life for use on machined sealing surfaces (butt joints), of 10 years
• BIRKOSIT has the HIGHEST temperature and pressure resistance
• Withstands Hot steam and air, hot and cold water, light fuel oils and lubricants, crude oil and natural gas at up to 900 °C.The excellent adhesion on sealing surfaces and butt joints guarantees a perfect seal up to 250 bar. The pressure resistance for flanges without sealing rings is up to 450 bar and even up to 550 bar for screw joints
• BIRKOSIT has better SPREADABILITY on the turbine flanges
• Compared to other jointing and sealing compounds available, it’s easier to apply Birkosit sealing compound on the flanges as it contains linseed oil. Linseed oil also improves the sealing due to its polymerization properties. The surface area coverage of the product is also more as compared to solvent based sealing materials. It can be spread on the dry surfaces using a putty knife or rubber spatula. As the product doesn’t cure but slightly changes its consistency, staying flexible and elastic, application on butt joints without time pressure is possible. And the product can be subjected immediately to working loads! A small amount of linseed oil varnish may be added to improve the spreading properties.
• BIRKOSIT has a longer STORAGE life - Unlimited storage life when is BIRKOSIT correctly stored. Its properties are stable and it is flexible in use. The tin should be properly closed if only part of the contents is used.
• Birkosit guarantees the following: In Unopened tins ‐ When correctly stored in the original packing, a storage life of 5 years from manufacture date.

Available in new 1 kg packs ? Sold in India by Project Sales Corporation

Orders to [email protected]

Project Sales Corporation, General Agency of A.I. Schulze, for marketing BIRKOSIT ‐ Dichtungskitt ? in India, 28 Founta Plaza, Suryabagh, Visakhapatnam 530 020, AP, India; Phone: +918912564393; Technical helpline +91‐98851‐49412