Environment
This European Standard specifies requirements and determination methods for newly certificated commercial civil passenger aircraft programmes regarding integrated air quality parameters and cabin air pressure.
This European Standard is intended to apply to newly certificated commercial civil passenger aircraft programmes. It may also apply to current production aircraft if it does not carry significant burden, i.e. if it can be shown to be technically feasible and economically justifiable.
This European Standard covers the period for each flight when the first crewmember enters the aircraft until the disembarkation of the last crewmember.
NOTE 1 During embarkation and disembarkation, reduced temperatures in the cabin may be desirable due to increased metabolic activity of the occupants. In some ground cases, the aircraft environmental control system (ECS) may not be able to compensate for the external conditions influencing the cabin comfort conditions, such as open doors, extreme hot/cold ground/air temperatures or radiant heat. In this case, external air-conditioning systems, for example conditioned low-pressure ground air or high-pressure supply, may be used to supplement the aircraft ECS. If the temperature range stated in this European Standard is regularly exceeded (either above or below the stated range), changes to airline and/or airport procedures and/or aircraft design should be introduced.
NOTE 2 During ground operations, the external air quality may adversely influence the air quality within the aircraft cabin. Contamination produced as a result of servicing activities or ground operations may enter the aircraft directly, for example via open doors, and the ECS may not be able to effectively control contaminant levels in the cabin. Airline and airport operational procedures should be organised so as to avoid direct contamination of the cabin from these pollutant sources. If the contaminant ranges stated in this European Standard are regularly exceeded, changes to airline and/or airport procedures and/or aircraft design should be introduced.
Outside air quality levels would usually be regulated by national authorities.
Individual predisposition may influence the proposed values and limits.
prEN 4666 is a self-standing standard, independent from EN 4618 or any other similar subject documents.
This European Standard covers data for:
Pressure Conditions (air pressure rate of change, absolute cabin air pressure)
Thermal Conditions (air temperature, surface temperature, draught)
Humidity Conditions
Noise and Vibration
Combined Effects
as newly developed by the European study “ICE - Ideal Cabin Environment” (European Contract No. AST4-CT-2005-516131) and its related findings.
This European Standard gives guidelines for the characterisation of poly(ethylene terephthalate) (PET) recyclates.
It gives the most important characteristics and associated test methods for assessing PET recyclates intended to be used for the production of semi-finished/finished products. It is intended for use by the supplier and purchaser of such materials, to assist them in agreeing on specifications.
This European Standard is applicable without prejudice to any existing legislation.
This European Standard defines a method of specifying delivery conditions for poly(vinyl chloride) (PVC) recyclates.
It gives the most important characteristics and associated test methods for assessing of PVC recyclates intended for use in the production of semi-finished/finished products.
It is intended to support parties involved in the use of recycled PVC to agree on specifications for specific and generic applications.
This European Standard does not cover the characterisation of plastics wastes. See EN 15347.
This European Standard is applicable without prejudice to any existing legislation.
This part of ISO 5667 provides guidance on the selection and use of various quality assurance and quality control techniques relating to the manual sampling of surface, potable, waste, marine and ground waters.
NOTE The general principles outlined in this part of ISO 5667 may, in some circumstances, be applicable to sludge and sediment sampling.
WARNING — Consider and minimize any risks and obey safety rules. See ISO 5667-1 for certain safety precautions, including sampling from boats and from ice-covered waters.
This International Standard enables estimation of the environmental bioavailability of trace elements to plants either basically as concentration in shoots and roots or in a more integrative way as the net uptake flux in plants. The biotest procedure includes two successive steps: (i) a pre-growth of plants in hydroponics and (ii) a growth of plants in contact with soil samples. The concentration in shoots and roots as well as the net uptake flux of trace elements in plants are determined at the end of the second step of the biotest procedure.
This International Standard is applicable to the assessment of environmental bioavailability of trace elements to plants, more particularly agricultural plants, in soils or soil materials under oxic conditions, considering that:
— Three plant species (cabbage, Brassica oleracea; tall fescue, Festuca arundinacea; tomato, Lycopersicon esculentum; 7.1) are suggested in the standardised biotest procedure, but additional target-plant species can also be used (7.1, Annex A),
— The standardised biotest procedure is validated for a range of trace elements including arsenic (As), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), lead (Pb), nickel (Ni) and zinc (Zn), but additional trace elements can be also accounted for (Annex A).
This International Standard can be applied to soils and soil materials, including soils amended before or after field sampling with composts, sludges, wastewaters and other (waste) materials.
NOTE 1 This International Standard is not designed to assess the environmental bioavailability of trace elements that are prone to volatilisation or resulting from uptake occurring in plant leaves following e. g. atmospheric fallout.
NOTE 2 This International Standard is not designed to assess the environmental bioavailability to plants of organic contaminants. A similar experimental procedure could be used but the physical separation between plant roots and soil using a polyamide mesh needs to be adapted to avoid organic contaminant sorption on the mesh.