ISO 11296-4:2018 地下の非圧力排水および下水道ネットワークの改修のためのプラスチック配管システム—パート4：現場硬化パイプによるライニング | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 8, Rehabilitation of pipeline systems

This second edition cancels and replaces the first edition (ISO 11296-4:2009), which has been technically revised.

The main changes compared to the previous edition are as follows:

• the service temperature range has been explicitly stated in the scope;
• Clause 3, new definitions have been added for temporary, permanent and semi-permanent membranes, with Annex A and the definition of preliner updated accordingly; for nominal wall thickness specialized for CIPP; and for service temperature and type testing adopted from other standards;
• type “R” and “E-CR” glass fibres have been added to Table 1;
• the requirements on “M” stage strength characteristics of the neat resin system have been removed in Table 2, as they have been effectively covered in Table 5 by the “I” stage requirements on mechanical characteristics of the cured composite;
• new requirements for the nature of the bond of any semi-permanent internal membrane to the underlying composite, and for declaration of class of composite in accordance with ISO 14125, have been added in 8.1;
• a new subclause has been added to 8.5 to specify reference temperature for testing, and procedure for determining temperature re-rating factors where required;
• separate tables for short and long-term mechanical characteristics have been created in 8.5, and minima for declared values removed except for ring stiffness, strain capacity and creep factor;

• the following have been added to Table 6:
  • a) option of ring test for wet creep factor;
  • b) test for long-term flexural strength under dry or wet conditions by the method detailed in the new Annex D;

• a test for stress corrosion (new Annex D test in acid environment) has been added to Table 7;

• further requirements for documenting specific installation parameters and procedures, and the related environmental precautions, in the installation manual for each individual CIPP technique, have been added in 9.4;

• requirements for documentation in the installation manual of technique-specific methods for sealing liner connections at manholes and laterals have been added in 9.7;

• Annex B has been revised to relax curvature restriction on 3-point bend test samples, and to include a full new procedure for calculation and reporting of test results without partial reference to ISO 178;

• the previous Annexes C and D has been merged into a single new Annex C specifying a common procedure for determination of long-term modulus under either dry or wet conditions.