Polyolefin pipes for the conveyance of fluids — Determination of resistance to crack propagation — Test method for slow crack growth on notched pipes seo-ignore

Polyolefin pipes for the conveyance of fluids — Determination of resistance to crack propagation — Test method for slow crack growth on notched pipes seo-ignore1 Scope This International Standard specifies a test method for determining the resistance to slow crack growth of polyolefin pipes, expressed in terms of time to failure in a hydrostatic pressure test on a pipe with machined longitudinal notches in the outside surface. The test is applicable to pipes of wall thickness greater than 5 mm.

ISO 23920 specifies a method for the quantification of ammonia by ion chromatography in mainstream smoke using ISO 20778 smoking parameters

however for a dedicated LPG standard see EN 12493

It also specifies requirements for the manufacturer concerning production

Instructions for conversion to other gases

It is intended to provide guidance for controlling such exposures as a cautionary measure where neither relevant exposure standards nor definitive hazard and exposure information exist

fine concrete screeds and to existing concrete floors within buildings

in this case the pressurized part only for low pressure and controlled atmosphere plasma spraying

before looking at how to protect people against electric shock hazards

All care should be taken to ensure that the samples are representative of the specified system

1   These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance

straight pattern

BS EN 15151-2 gives the classification of braking devices used in mountaineering