Piping systems for rehabilitation of underground drains, sewers and water supply networks — Part 2: ...
This document specifies requirements and test methods for pipes and fittings which are part of piping systems for the rehabilitation of underground non-pressure and pressure drainage and sewerage networks, and of water supply networks which transport water intended for human consumption, including raw water intake pipelines.
It is applicable to the renovation technique family:
— lining with…
Belt drives — Classical and narrow V-belts — Grooved pulleys (system based on datum width)
Cancels and replaces the second edition (1989). Specifies the principal dimensions of grooved pulleys for classical V-belts and narrow V-belts specified in the terminology system based on datum width. It is important that narrow belts are not used with pulleys uniquely designed for classical belts, and, on the other hand, that multiple belt drives are not used with joined V-belts.
Plastics — Determination of the aerobic biodegradation of plastic materials exposed to seawater usin...
This document describes a laboratory test method to determine the aerobic biodegradation of plastic materials exposed to seawater using accelerated conditions.
Furthermore, this document describes the general requirements of the apparatus and the procedures for using this test method. The biodegradation is determined by measuring the oxygen demand in a closed respirometer or by measuring the CO2…
ISO 12251 specifies dimensional requirements for clamp mounted CR fuel injectors and their corresponding cylinder head features in diesel engines.
According to the injector nozzle capnut, the clamp mounted CR fuel injectors can be divided into two types:
a) Type A, where the nozzle capnut is straight (see Figure 4);
b) Type B, where the nozzle capnut is stepped (see Figure 5).
Each clamp mounted…
Cuir — Essais physiques et mécaniques — Détermination de la résistance à la chaleur des cuirs vernis
ISO 17232:2017 spécifie deux méthodes permettant de déterminer la résistance à la chaleur du cuir vernis.
La méthode A met en ?uvre un lastomètre modifié, tandis que la méthode B utilise l'appareillage Zwik. Ces deux méthodes sont applicables aux cuirs vernis quelles que soient leurs utilisations finales.
This document specifies requirements for the design, construction and operation of platform barrier systems positioned at the edge of a station platform immediately adjacent to the rail or other guided vehicles in stations and boarding points for passenger services. This document includes:
— requirements for the fixed structure and fixed parts along the platform;
— physical requirements for the…
