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The objective of this VGB guideline B 108 is to give planners, erectors and operators of power plant facilities the possibility to identify the plant components, functions, physical quantities and conditions in a uniform and process-related comprehensive way.

Bilingual Edition: English and German

Vorwort des Herausgebers

VGB PowerTech hat eine zentrale Zuverlässigkeits- und Ereignisdatenbank (ZEDB) eingerichtet, in der die Betriebserfahrungen der deutschen Kernkraftwerke, der niederländischen Anlage Borssele und des Kernkraftwerks Gösgen (Schweiz) gesammelt werden, um daraus anlagenspezifische Zuverlässigkeitsdaten für probabilistische Sicherheitsanalysen (PSA) zu ermitteln.

Publisher's Preface

VGB PowerTech has set up a centralized Reliability and Event Data Base (ZEDB) which contains a compilation of the operating experiences of all German nuclear power plants, the Dutch unit Borssele and the Swiss unit Goesgen, generated to allow plant-specific reliability data to be determined for probabilistic safety analyses (PSA).

This publication will be delivered as an ebook (PDF-file).

This VGB-Standard deals with flue gas desulphurisation (FGD) in large combustion plants. At this point, no additive processes, which can be employed in combustion, are considered. Here, only plants downstream of combustion are considered. The aim of the instruction sheet is to describe procedures and special designs so that every reader finds his type of plant described. Operating experience is what is most important. If special plant-specific problems occur, the corresponding plant type is pointed out. First experience is also important since the cooperation of experienced operating personnel is necessary for planning new plants. There is otherwise a risk that operating experience with existing plants is not considered.

With this VGB-Standard options are demonstrated to reduce fire hazards by constructional means and to respond to them by appropriate procedures, to detect a fire that has already started as soon as possible, and to fight the fire effectively taking into account the specific properties of this fuel.

The present VGB Standard S-175 explains fundamental concepts and compiles the threats and the security requirements derived from them in a structured and clear manner. In addition, recommendations for actions regarding the individual requirements have been compiled by way of example for improved understanding and  quick implementation. It is envisaged to provide in a library both additional aids for practical application and advice in response to current events.

This VGB-Standard presents methods of using operational and adapted technical measures to keep the risks of fire and explosion as low as possible. In this way, potential hazards can be avoided by the deployment of suitable operational workflows. Fires can be detected without delay and combatted effectively under the special conditions of the type of plant concerned. The formation of potentially explosive atmospheres can be limited by operational and technical measures.

The present VGB Standard S-175 explains fundamental concepts and compiles the threats and the security requirements derived from them in a structured and clear manner. In addition, recommendations for actions regarding the individual requirements have been compiled by way of example for improved understanding and  quick implementation. It is envisaged to provide in a library both additional aids for practical application and advice in response to current events.

With this VGB-Standard options are demonstrated to reduce fire hazards by constructional means and to respond to them by appropriate procedures, to detect a fire that has already started as soon as possible, and to fight the fire effectively taking into account the specific properties of this fuel.

This VGB-Standard deals with flue gas desulphurisation (FGD) in large combustion plants. At this point, no additive processes, which can be employed in combustion, are considered. Here, only plants downstream of combustion are considered. The aim of the instruction sheet is to describe procedures and special designs so that every reader finds his type of plant described. Operating experience is what is most important. If special plant-specific problems occur, the corresponding plant type is pointed out. First experience is also important since the cooperation of experienced operating personnel is necessary for planning new plants. There is otherwise a risk that operating experience with existing plants is not considered.

This VGB-Standard presents methods of using operational and adapted technical measures to keep the risks of fire and explosion as low as possible. In this way, potential hazards can be avoided by the deployment of suitable operational workflows. Fires can be detected without delay and combatted effectively under the special conditions of the type of plant concerned. The formation of potentially explosive atmospheres can be limited by operational and technical measures.

Very substantial advances have been made over the last couple of years in the field of heat transfer surface cleaning which are included in the present revision of the Standard (cf. first edition). New methods like explosion cleaning are now included in the text.

Very substantial advances have been made over the last couple of years in the field of heat transfer surface cleaning which are included in the present revision of the Standard (cf. first edition). New methods like explosion cleaning are now included in the text.

The aim of these recommendations for improving H2 safety is to provide information for designing, constructing, modernising/refurbishing and operating hydrogen-cooled generators in power plants.

The aim of these recommendations for improving H2 safety is to provide information for designing, constructing, modernising/refurbishing and operating hydrogen-cooled generators in power plants.

The objective of this VGB guideline B 108 is to give planners, erectors and operators of power plant facilities the possibility to identify the plant components, functions, physical quantities and conditions in a uniform and process-related comprehensive way.

Bilingual Edition: English and German

The purpose of this VGB-Standard is, with respect to the electrotechnical systems and components of a power plant, to set out what essential rules should prevail regarding their characteristics and operation, and how these can be applied for purposes of implementing BetrSichV. In addition, it intends to make a contribution to a uniform understanding of the risk assessment of all electrotechnical systems and components of a power plant.

The purpose of this VGB-Standard is, with respect to the electrotechnical systems and components of a power plant, to set out what essential rules should prevail regarding their characteristics and operation, and how these can be applied for purposes of implementing BetrSichV. In addition, it intends to make a contribution to a uniform understanding of the risk assessment of all electrotechnical systems and components of a power plant.

The VGB-Guideline R108e aim to form a foundation that operators can use to compile their own fire protection strategies, tailored to suit the particular plant in question. For this reason, a number of suitable steps are given as examples.

Due to the development towards larger outputs in power Stations, it was necessary for the design of air extraction pumps for surface condenser units to keep pace. For this purpose water-, air- or steam ejectors and  water ring pumps or combination of these can be used. The design of the suction pumps was adapted to the development of unit size.