Translation of "Primary containment" in German

This has been used in a variety of secondary and primary liner containment applications with excellent success.

Primary containment should be designed and tested to demonstrate freedom from leakage risk.

Although safety systems have become increasingly effective, R & D is still needed in order to acquire a better understanding of severe accidents, and to improve primary containment systems and accident prevention.

Closed equipment used for the primary containment of the biological agents should be designed and constructed as to prevent any leakage or the formation of droplets and aerosols.

The hydrogen in the atmosphere which at the beginning of the accident or during the long-term phase passes into the secondary container 14 due to inwardly directed leaks of the primary containment 5 from 46 is condensed out of this atmosphere by the hydraulic seal 16 and is supplied to the waste water processing unit 18 at a desirable time.

In principle, the advantages in accordance with the invention can also be exploited in an already operative power plant without having to supplement it with auxiliary containments and filter units, i.e. by utilising already installed means such as the primary reactor containment and normal accident filters, if these are supplemented by barrier means 43. For instance, the function of a secondary reactor containment is taken over by a barrier area 47 of the primary reactor containment 5.

Departing from previous known studies, this container is now supposed to serve not only to deal with the excess pressure which accumulates in the primary reactor containment, but primarily to separate the reactive components oxygen and especially hydrogen by flushing the primary reactor containment with an inert gas and separating it before large quantities of hydrogen, in particular, and fission products are released into the atmosphere of the primary reactor containment.

It is also feasible to provide the supplements in the primary reactor containment and to make the expansion by attaching a second containment in the sense of a graduated system.

The realisation of the second reactor containment in the form of a pressure reduction system can be expected to have not only financial advantages but also the advantages that both an almost continuous flushing of the primary containment with steam becomes possible and that at the same tine the hydraulic seal can be utilised as a condensing gas scrubber, thereby creating especially favourable prerequisites both as far the pressure regulation in both reactor containments and as far as the employment of fission product purification filters are concerned.

Typical fields of application of polyurea spray elastomers are coatings, in particular for repairing concrete and protecting against water (coverings for roofs and car park decks, bridge and tunnel repairs), so-called “secondary containment” (coatings for receivers of tanks for chemicals, waste water or oil, or loading areas for hazardous goods), corrosion protection (loading areas of freight ships, lorries, pick-ups and railway wagons) or so-called “primary containment” (sewer manholes, clarification plants).

A globally standardized key performance indicator (KPI) – Loss of Primary Containment (LoPC material release / leakages) – is used at Bayer as an early indicator for plant safety incidents and is integrated into Group-wide safety reporting.

With safety always a priority, the DCS guarantees both primary and secondary containment, with a glove box enabling the operator to open the double liners within the sealed environment.

Particularly useful are polyether polyols which contain primary hydroxyl groups.

In particular, those polyether polyols which contain primary hydroxyl end groups are used.

Aliphatic or aromatic compounds containing primary or secondary amino groups are used as diamines.

Such ion exchangers are, for example, crosslinked polymers containing primary, secondary or tertiary amino groups.

Polyethylene imines may contain primary, secondary and tertiary amino groups and also quaternary ammonium groups.

Reaction products with primary alcohols contain only secondary --OH groups.

The polyols used may contain primary and/or secondary hydroxyl groups.

The polyethyleneimines are preferably branched and contain primary, secondary and tertiary amino groups.

By using polycarboxylic acids which are modified with primary amino groups, polycarboxylic acid units containing primary amino groups are obtained.

Polymerizable compounds containing primary, secondary and, in particular, tertiary amino groups are preferred.

The cryogenic container comprises at least one primary container, which has at least one flexible film bag.

Unsaturated monomers containing primary hydroxyl groups are preferred by virtue of their higher reactivity for transesterification reactions.

Copolymers of olefinically unsaturated monomers containing primary amino groups are known.