GB/T 40967-2021Polyethylene (PE) pipes and fittings for nuclear power plants (English PDF)

1 Scope

This document stipulates that polyethylene pipes (hereinafter referred to as pipes) and injection molded polyethylene (PE) blends as raw materials are extruded

Or machined or welded polyethylene pipe fittings (hereinafter referred to as pipe fittings) material, pipe fitting classification, requirements, system applicability, test method

Laws, inspection rules, signs, packaging, transportation and storage.

This document is applicable to nuclear power plant cooling water and general cooling water with water temperature not greater than 60°C and hydrostatic design stress (HDS) not greater than 6.90MPa

Use polyethylene pipes and fittings for pressure water delivery.

Note 1.The reference working temperature is 23°C. Appendix A gives the hydrostatic design stress (HDS) of polyethylene pipes with a working temperature between 0°C and 60°C.

This document is suitable for DN (IPS series) 1/2in (21.3mm) ~ 54in (1371.1mm) and dn (metric series) 16mm~

1600mm polyethylene pipes and fittings.

Note 2.The purchaser has the responsibility to appropriately select the products specified in this document according to their specific application requirements and in combination with relevant regulations, standards or specifications.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

GB/T 1033.1 Determination of the density of plastic non-foam plastics Part 1.Immersion method, liquid pycnometer method and titration method

GB/T 1033.2 Determination of the density of plastic non-foam plastics Part 2.Density gradient column method

GB/T 2828.1 Sampling Inspection Procedures by Attributes Part 1.Batch Inspection Sampling Plan Retrieved by Acceptance Quality Limit (AQL)

GB/T 2918 Standard environment for condition adjustment and testing of plastic samples

GB/T 3682.1 Plastic thermoplastic melt mass flow rate (MFR) and melt volume flow rate (MVR) measurement

Part 1.Standard Methods

GB/T 6111-2018 Determination of the internal pressure resistance of thermoplastic piping systems for fluid transportation

GB/T 8806 Determination of the dimensions of plastic parts in plastic piping systems

GB/T 13021 Determination of carbon black content of polyethylene pipes and fittings (thermal weight loss method)

GB/T 13663.1-2017 Polyethylene (PE) piping system for water supply Part 1.General

GB/T 13663.3 Polyethylene (PE) piping system for water supply Part 3.Pipe fittings

GB/T 15560-1995 Hydraulic instantaneous blasting and pressure test method for plastic pipes for fluid transportation

GB/T 18251 Determination of the dispersion of pigments or carbon black in polyolefin pipes, pipe fittings and mixtures

GB/T 18252 Plastic piping systems use extrapolation to determine the long-term hydrostatic strength of thermoplastic materials in the form of pipes

GB/T 19278 General terms and definitions for thermoplastic pipes, fittings and valves

GB/T 19280 Thermoplastic pipes for fluid transport-Determination of resistance to rapid crack propagation (RCP) Small size steady state test (S4 test)

GB/T 19466.6 Plastic Differential Scanning Calorimetry (DSC) Part 6.Oxidation Induction Time (Isothermal OIT) and Oxidation Induction

Determination of temperature (dynamic OIT)

GB/T 19806 Extrusion peel test of polyethylene electrofusion components for plastic pipes and pipe fittings

Preparation of GB/T 19807 plastic pipes and fittings, polyethylene pipes and electrofusion fittings combined test pieces […]