- Non-volatile alkali - sodium hydroxide or sodium phosphate boiler wa terjemahan - - Non-volatile alkali - sodium hydroxide or sodium phosphate boiler wa Bahasa Indonesia Bagaimana mengatakan

- Non-volatile alkali - sodium hydr

- Non-volatile alkali - sodium hydroxide or sodium phosphate boiler water treatment applied under reducing conditions. (This regime is limited to drum boiler circuits only and ammonia is still used to adjust pH in feed-water and steam).

All the plants operate with high purity water and steam conditions and almost all national and company guidelines define the target parameter values to be aimed for (either below or within which to operate) and the maximum values (or the maximum range) not to be exceeded.

The individual guidelines are based largely on the experience gained in the last twenty years as a result of many earlier plant failures resulting from inadequate control of water and steam purity.


1.2 Scope of the Guidelines

These guidelines are intended for the operation of fossil fired generating plants. They do not cover low rated industrial equipment, that operate with softened water. They include multi-pressure combined cycle plants, where each stage is considered as an individual boiler with respect to limits, but the control strategy have to take account the interdependency of stages.

Existing guidance, reflecting good practice, takes into account avoidance of corrosion and deposition within power plant components. In specifying action levels an attempt is made to relate deviation from good practice to possible plant damage.

In implementing the guidelines, it must be borne in mind that :

- Plant chemistry provides the manager with information for decision making. Commitment of management, to make economic and safety decisions based on risk assessment, backed by high quality technical guidance, is essential.

- Action levels must be credible to those running the plant, and making operational decisions, not just those with specialist chemistry knowledge.

- Operators are normally opposed to shutting-down plant as a consequence of loss of chemical control.

- Sufficient information must be available on which to base a request for intervention.

The guidelines recommend conditions for both continuous operation and for plant start-up. A target range and three levels of action are defined in simple terms below, and in more detail in table 1.

Target range, no action required; this range covers the practicable values which plant managers will normally achieve without excessive cost.

Action level 1, minor disturbance requiring investigation, diagnosis and optimization.

Action level 2, serious disturbance in chemical control requiring diagnosis and action to eliminate the cause.

Action level 3, very serious disturbance requiring substantial operator intervention, such as load reduction, or plant shut-down.

The limits are the same for start-up and continuous operation. For start-up however, the action levels should be used for optimising the start-up procedure.

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- Non-volatile alkali - sodium hydroxide or sodium phosphate boiler water treatment applied under reducing conditions. (This regime is limited to drum boiler circuits only and ammonia is still used to adjust pH in feed-water and steam).All the plants operate with high purity water and steam conditions and almost all national and company guidelines define the target parameter values to be aimed for (either below or within which to operate) and the maximum values (or the maximum range) not to be exceeded.The individual guidelines are based largely on the experience gained in the last twenty years as a result of many earlier plant failures resulting from inadequate control of water and steam purity.1.2 Scope of the GuidelinesThese guidelines are intended for the operation of fossil fired generating plants. They do not cover low rated industrial equipment, that operate with softened water. They include multi-pressure combined cycle plants, where each stage is considered as an individual boiler with respect to limits, but the control strategy have to take account the interdependency of stages.Existing guidance, reflecting good practice, takes into account avoidance of corrosion and deposition within power plant components. In specifying action levels an attempt is made to relate deviation from good practice to possible plant damage.In implementing the guidelines, it must be borne in mind that :- Plant chemistry provides the manager with information for decision making. Commitment of management, to make economic and safety decisions based on risk assessment, backed by high quality technical guidance, is essential.- Action levels must be credible to those running the plant, and making operational decisions, not just those with specialist chemistry knowledge.- Operators are normally opposed to shutting-down plant as a consequence of loss of chemical control.- Sufficient information must be available on which to base a request for intervention.The guidelines recommend conditions for both continuous operation and for plant start-up. A target range and three levels of action are defined in simple terms below, and in more detail in table 1.Target range, no action required; this range covers the practicable values which plant managers will normally achieve without excessive cost.Action level 1, minor disturbance requiring investigation, diagnosis and optimization.Action level 2, serious disturbance in chemical control requiring diagnosis and action to eliminate the cause.Action level 3, very serious disturbance requiring substantial operator intervention, such as load reduction, or plant shut-down.The limits are the same for start-up and continuous operation. For start-up however, the action levels should be used for optimising the start-up procedure.
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Hasil (Bahasa Indonesia) 2:[Salinan]
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- Non-volatile alkali - natrium hidroksida atau natrium fosfat pengolahan air boiler diterapkan dalam mengurangi kondisi. (Rezim ini terbatas untuk menghidupkan sirkuit boiler saja dan amonia masih digunakan untuk mengatur pH dalam pakan-air dan uap). Semua tanaman beroperasi dengan air dan uap kondisi kemurnian tinggi dan hampir semua pedoman nasional dan perusahaan menentukan nilai parameter target untuk ditujukan untuk (baik di bawah atau di mana untuk mengoperasikan) dan nilai maksimum (atau jangkauan maksimum) tidak dilampaui. Pedoman individu sebagian besar didasarkan pada pengalaman yang diperoleh dalam dua puluh tahun terakhir sebagai akibat dari banyak kegagalan tanaman sebelumnya akibat kurangnya pengendalian air dan uap kemurnian. 1.2 Lingkup Pedoman Pedoman ini dimaksudkan untuk operasi fosil dipecat pembangkit. Mereka tidak menutupi dinilai peralatan industri rendah, yang beroperasi dengan air melunak. Mereka termasuk multi-tekanan gabungan tanaman siklus, di mana setiap tahap dianggap sebagai boiler individu sehubungan dengan batas, tetapi strategi pengendalian harus mengambil memperhitungkan saling ketergantungan tahap. Ada bimbingan, mencerminkan praktik yang baik, memperhitungkan menghindari akun korosi dan deposisi dalam komponen pembangkit listrik. Dalam tingkat tindakan menentukan upaya dilakukan untuk berhubungan penyimpangan dari praktik yang baik untuk kemungkinan kerusakan tanaman. Dalam melaksanakan pedoman, harus diingat bahwa: - kimia Tanaman menyediakan manajer dengan informasi untuk pengambilan keputusan. Komitmen manajemen, untuk membuat keputusan ekonomi dan keamanan berdasarkan penilaian risiko, yang didukung oleh bimbingan teknis kualitas tinggi, sangat penting. - tingkat Action harus kredibel bagi mereka yang menjalankan pabrik, dan membuat keputusan operasional, bukan hanya mereka yang memiliki pengetahuan kimia khusus. - Operator biasanya menentang tanaman menutup-down sebagai konsekuensi dari hilangnya kontrol kimia. - Informasi yang memadai harus tersedia yang menjadi dasar permintaan untuk intervensi. Pedoman merekomendasikan kondisi untuk kedua operasi terus-menerus dan untuk pabrik start-up. Berbagai target dan tiga tingkat tindakan yang didefinisikan dalam istilah sederhana di bawah ini, dan secara lebih rinci dalam tabel 1. Kisaran Target, tidak ada tindakan yang diperlukan; kisaran ini mencakup nilai-nilai praktis yang biasanya akan mencapai manajer pabrik tanpa biaya berlebihan. Aksi level 1, gangguan kecil yang memerlukan investigasi, diagnosis dan optimasi. Aksi level 2, gangguan serius dalam pengendalian kimia memerlukan diagnosis dan tindakan untuk menghilangkan penyebab. tingkat Aksi 3 , gangguan yang sangat serius yang memerlukan intervensi operator besar, seperti pengurangan beban, atau tanaman shut-down. Batas-batas yang sama untuk start-up dan terus beroperasi. Untuk start-up Namun, tingkat tindakan harus digunakan untuk mengoptimalkan prosedur start-up.


































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