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Norm
ÖNORM EN 1120
Issue date: 1997 07 01
Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Determination of the resistance to chemical attack from the inside of ....(abbreviated)
This standard specifies a method for determining the chemical resistance properties of glass-reinforced thermosetting plastics (GRP) pipes and fittings in a deflected con...
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Publisher:
Austrian Standards International
Format:
Digital | 16 Pages
Language:
German
| English
| Download GER/ENG
Optionally co-design standards:
This standard specifies a method for determining the chemical resistance properties of glass-reinforced thermosetting plastics (GRP) pipes and fittings in a deflected condition for nominal sizes DN 100 and larger.
In conjunction with EN 705 this standard provides a method for evaluating the effect of a chemical environment on the interior of a pipe or fitting after a specified period of time.
NOTE I: It has been found that the effect of chemical environments can be accelerated using strain induced by deflection, hence it is frequently referred to as strain corrosion.
NOTE 2: To study the applicability of the method to testing the pipe or fitting with regard to structural failure (where structural failure becomes apparent by a sudden reduction in the load applied of at least 20 t of the initial load) then where "weep failure" is referred to in this standard substitute "structural failure". A structural failure can be caused by conditions such as:
interlaminar separation;
cracks in or through the structural layer of the wall;
- tensile failure of the glass reinforcement;
- if applicable, separation of a thermoplastics liner from the structural wall.
For such studies, data from "structural failure" results will be analyzed separately from "weep failure" results.
ÖNORM EN 1120
1997 07 01
Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Determi...
Norm
↖
Norm
Issue date :
1994 11 01
Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Methods for regression analyses and their use