Low Sulphur Fuels Cause Pump Deterioration

Thursday, September 30, 2010
Due to new regulations, the shipping community is faced with new challenges on a large scale, especially those ships that operate both inside and outside environmental zones and switching over from one fuel to another.

For a long time the traditional approach to operation on heavy fuel oils (HFO) has been “pier-to-pier”. This is all going to change, said Allweiler, a world-leading provider of marine pumps to the shipping industry.

When global ship operator BW Gas overhauled a low-performing fuel service pump, it discovered high wear on pump elements. BW Gas concludes that a contributing factor to the increased wear rate on the pump can be the 0.1% Sulphur marine gas oil used in EU ports, however it is also clear that other factors play a significant role.

“As a global LNG owner & operator, we set high standards for environmentally-friendly operation.  And we continually monitor the pump performance of our 11 steamturbine-driven LNG tanker fleet when in LSMGO operation,” said Johan Christian Øwre, Superintendent BW Fleet Management.

The BW LNG fleet utilizes to a large extent the boil-off gas from the cargo as fuel for propulsion and consequently leaves a very small sulphur emission footprint.

“We have managed the current emission regulations very well and proactively overhaul any pump showing signs of deteriorating performance,” said Øwre.

“Today we have a lot more knowledge about the effects of low sulphur content diesel fuels,” said Christian Martin, Business Development & Marketing, Allweiler.

The majority of pump problems occur on vessels in global operation. When approaching an environmental zone - like the Sulphur Emission Control Area (the English Channel, North Sea and the Baltic Sea and other European harbours), they must switch from heavy fuel oil (HFO) to diesel oil to comply, e.g. with the EU Directives which limit the sulphur content of marine fuel oils down to 0.1%.

“Some vessels, depending on areas of operation, are more affected than others.  When two different fuels are mixed there is a risk of incompatibility, which may cause clogging of fuel filters and separator, sticking of fuel injection pumps and considerable pump deterioration,” he said.

Allweiler confirms that several major shipowners operating in the deep sea trade are facing major overhauls or full pump replacements. And the main concern is low viscosity levels when operating with low sulphur diesel fuels. 

Martin explained: “When switching from HFO to diesel, oil temperatures must drop from 150 degrees to 40 degrees. This process is extremely difficult to manage, due to the resulting low viscosity of diesel caused by too high temperatures. Or the very high viscosity HFO levels caused by too low temperatures.”

Extremely low sulphur content and consequent low viscosity levels have a strong impact on fuel injection and pump/valve lubrication. Pumps must be capable of handling low viscosity fuels while retaining the required pressures and capacities.

Servicing hundreds of shipping clients around the world, Allweiler is experiencing an increased demand by shipowners for technical evaluations and modification recommendations of existing pumps.

“Compared to the past, today’s fuel oil pumps encounter new operational conditions. Shipowners are in doubt about the effects of low sulphur content diesel fuels and the limits that pumps can handle, especially when exposed to mixed fuels,” said Martin.

All fluids. No limits
Pumps must carry out their intended functions under defined conditions and with a defined high level of reliable operation.

“Optimal pump performance depends on the type of materials used to construct the pump, which must be appropriate for the liquid’s chemical and physical properties, operational conditions, such as pressure, speed, temperature, and the areas of operation,” said Martin.

Allweiler 3-screw pumps are modified, comprising specially treated materials, to minimize the risk of sudden break downs, thus providing long-term reliable operation.

 Allweiler is one of the very few manufacturers giving accurate and clear answers to functional safety of marine pumps, undertaking pump assessments to evaluate premature wear, and recommending the right, cost-efficient solution.

Originaly from:
http://www.marinelink.com/news/deterioration-sulphur335691.aspx

Bahan Bakar Rendah Sulfur Penyebab Kerusakan Pompa

Kamis, 30 September 2010 Due to new regulations, the shipping community is faced with new challenges on a large scale, especially those ships that operate both inside and outside environmental zones and switching over from one fuel to another. Karena peraturan baru, masyarakat pengiriman dihadapkan dengan tantangan baru dalam skala besar, terutama kapal-kapal yang beroperasi baik zona dalam dan di luar lingkungan dan beralih dari satu bahan bakar yang lain.

For a long time the traditional approach to operation on heavy fuel oils (HFO) has been “pier-to-pier”. Untuk waktu yang lama pendekatan tradisional untuk operasi pada bahan bakar minyak berat (HFO) telah "dermaga ke dermaga". This is all going to change, said Allweiler, a world-leading provider of marine pumps to the shipping industry. Ini semua akan berubah, kata Allweiler, penyedia terkemuka dunia pompa laut untuk industri pelayaran.

When global ship operator BW Gas overhauled a low-performing fuel service pump, it discovered high wear on pump elements. Ketika kapal operator global BW Gas overhaul pompa bahan bakar layanan berperforma rendah, itu ditemukan aus yang tinggi pada elemen pompa. BW Gas concludes that a contributing factor to the increased wear rate on the pump can be the 0.1% Sulphur marine gas oil used in EU ports, however it is also clear that other factors play a significant role. BW Gas menyimpulkan bahwa faktor yang berkontribusi terhadap laju keausan meningkat pada pompa dapat menjadi Sulphur 0,1% migas laut digunakan di pelabuhan Uni Eropa, namun juga jelas bahwa faktor-faktor lain yang memainkan peran penting.

“As a global LNG owner & operator, we set high standards for environmentally-friendly operation.  And we continually monitor the pump performance of our 11 steamturbine-driven LNG tanker fleet when in LSMGO operation,” said Johan Christian Øwre, Superintendent BW Fleet Management. "Sebagai pemilik LNG global & operator, kami menetapkan standar yang tinggi untuk operasi yang ramah lingkungan Dan kami terus memantau kinerja pompa 11 armada LNG kita steamturbine-driven tanker. Ketika beroperasi LSMGO," kata Johan Kristen Øwre, Inspektur BW Fleet Management .

The BW LNG fleet utilizes to a large extent the boil-off gas from the cargo as fuel for propulsion and consequently leaves a very small sulphur emission footprint. Armada BW LNG memanfaatkan untuk sebagian besar gas mendidih-off dari kargo sebagai bahan bakar untuk penggerak dan akibatnya meninggalkan jejak emisi yang sangat kecil belerang.

“We have managed the current emission regulations very well and proactively overhaul any pump showing signs of deteriorating performance,” said Øwre. "Kami telah berhasil peraturan emisi saat ini sangat baik dan secara proaktif setiap perbaikan pompa menunjukkan tanda-tanda kinerja memburuk," kata Øwre.

“Today we have a lot more knowledge about the effects of low sulphur content diesel fuels,” said Christian Martin, Business Development & Marketing, Allweiler. "Hari ini kita memiliki pengetahuan lebih banyak tentang efek dari bahan bakar diesel rendah kandungan sulfur," kata Christian Martin, Business Development & Marketing, Allweiler.

The majority of pump problems occur on vessels in global operation. Mayoritas masalah pompa terjadi pada kapal dalam operasi global. When approaching an environmental zone - like the Sulphur Emission Control Area (the English Channel, North Sea and the Baltic Sea and other European harbours), they must switch from heavy fuel oil (HFO) to diesel oil to comply, eg with the EU Directives which limit the sulphur content of marine fuel oils down to 0.1%. Ketika mendekati zona lingkungan - seperti Sulphur Emisi Control Area (Selat Inggris, Laut Utara dan Laut Baltik dan pelabuhan Eropa lainnya), mereka harus beralih dari bahan bakar minyak berat (HFO) untuk minyak diesel untuk memenuhi, misalnya dengan Uni Eropa yang membatasi kandungan sulfur bahan bakar minyak laut turun ke 0,1%.

“Some vessels, depending on areas of operation, are more affected than others.  When two different fuels are mixed there is a risk of incompatibility, which may cause clogging of fuel filters and separator, sticking of fuel injection pumps and considerable pump deterioration,” he said. "Beberapa kapal, tergantung pada area operasi, lebih terpengaruh daripada yang lain. Ketika dua bahan bakar berbeda dicampur ada resiko ketidakcocokan, yang dapat menyebabkan penyumbatan filter bahan bakar dan pemisah, menempel pompa injeksi pompa bahan bakar dan kerusakan yang cukup besar," katanya.

Allweiler confirms that several major shipowners operating in the deep sea trade are facing major overhauls or full pump replacements. Allweiler menegaskan bahwa beberapa pemilik kapal besar yang beroperasi di perdagangan laut dalam menghadapi overhaul besar atau penggantian pompa penuh. And the main concern is low viscosity levels when operating with low sulphur diesel fuels. Dan perhatian utama adalah tingkat viskositas rendah bila beroperasi dengan bahan bakar diesel rendah belerang.

Martin explained: “When switching from HFO to diesel, oil temperatures must drop from 150 degrees to 40 degrees. Martin menjelaskan: "Bila beralih dari HFO ke diesel, suhu minyak harus turun dari 150 derajat sampai 40 derajat. This process is extremely difficult to manage, due to the resulting low viscosity of diesel caused by too high temperatures. Proses ini sangat sulit untuk mengelola, karena viskositas rendah yang dihasilkan solar disebabkan oleh suhu yang terlalu tinggi. Or the very high viscosity HFO levels caused by too low temperatures.” Atau tingkat viskositas yang sangat tinggi HFO disebabkan oleh terlalu suhu rendah. "

Extremely low sulphur content and consequent low viscosity levels have a strong impact on fuel injection and pump/valve lubrication. Sangat kandungan sulfur rendah dan akibatnya tingkat viskositas rendah memiliki dampak yang kuat pada bahan bakar dan pompa injeksi / pelumasan katup. Pumps must be capable of handling low viscosity fuels while retaining the required pressures and capacities. Pompa harus mampu menangani bahan bakar viskositas rendah sementara tetap mempertahankan tekanan yang diperlukan dan kapasitas.

Servicing hundreds of shipping clients around the world, Allweiler is experiencing an increased demand by shipowners for technical evaluations and modification recommendations of existing pumps. Melayani pengiriman ratusan klien di seluruh dunia, Allweiler mengalami peningkatan permintaan oleh pemilik kapal untuk evaluasi teknis dan rekomendasi modifikasi pompa yang ada.

“Compared to the past, today's fuel oil pumps encounter new operational conditions. "Dibandingkan dengan masa lalu, bahan bakar saat ini pompa minyak menemukan kondisi operasional baru. Shipowners are in doubt about the effects of low sulphur content diesel fuels and the limits that pumps can handle, especially when exposed to mixed fuels,” said Martin. Pemilik kapal ragu tentang efek dari bahan bakar solar yang rendah kandungan sulfur dan batas-batas yang pompa dapat menangani, terutama bila terkena bahan bakar campuran, "kata Martin.

All fluids. Semua cairan. No limits Tidak ada batas
Pumps must carry out their intended functions under defined conditions and with a defined high level of reliable operation. Pompa harus menjalankan fungsi dimaksud mereka di bawah kondisi yang ditentukan dan dengan tingkat tinggi didefinisikan operasi yang handal.

“Optimal pump performance depends on the type of materials used to construct the pump, which must be appropriate for the liquid's chemical and physical properties, operational conditions, such as pressure, speed, temperature, and the areas of operation,” said Martin. "Kinerja pompa yang optimal tergantung pada jenis bahan yang digunakan untuk membangun pompa, yang harus sesuai untuk bahan kimia cair dan sifat fisik, kondisi operasional, seperti tekanan, kecepatan, temperatur, dan daerah operasi," kata Martin.

Allweiler 3-screw pumps are modified, comprising specially treated materials, to minimize the risk of sudden break downs, thus providing long-term reliable operation. Allweiler 3-ulir pompa yang dimodifikasi, terdiri dari bahan-bahan khususnya diperlakukan, untuk meminimalkan risiko downs istirahat tiba-tiba, sehingga memberikan operasi yang dapat diandalkan jangka panjang.

Allweiler is one of the very few manufacturers giving accurate and clear answers to functional safety of marine pumps, undertaking pump assessments to evaluate premature wear, and recommending the right, cost-efficient solution. Allweiler adalah salah satu produsen sangat sedikit memberikan jawaban yang akurat dan jelas untuk keselamatan fungsional pompa laut, pompa melakukan penilaian untuk mengevaluasi mengenakan dini, dan memberikan rekomendasi yang tepat, solusi hemat biaya.

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