ISO 11297-1:2018 圧力下の地下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1：一般 | ページ 6

3.1.1

pipeline system

interconnecting pipe network for the conveyance of fluids

3.1.2

rehabilitation

measures for restoring or upgrading the performance of existing systems, including renovation, repair and replacement

3.1.3

renovation

work incorporating all or part of the original fabric of the pipeline, by means of which its current performance is improved

3.1.4

replacement

construction of a new pipeline, on or off the line of an existing pipeline ここで, the function of the new pipeline system incorporates that of the old

3.1.5

maintenance

routine work undertaken to ensure the existing performance of an asset

3.1.6

repair

rectification of local damage

3.1.7

lining pipe

pipe inserted for renovation purposes

3.1.8

liner

lining pipe after installation

3.1.9

lining system

lining pipe and all relevant fittings for insertion into an existing pipeline for the purposes of renovation

3.1.10

renovated pipeline system

existing pipeline system plus the installed lining system used to renovate it, as well as any grout or other annular filling material used

3.1.11

characteristic

property, dimension or other feature of a material or component

3.1.12

declared value

limiting value of a characteristic declared in advance by the lining system supplier, which becomes the requirement for the purposes of assessment of conformity

3.1.13

annular filler

material for grouting annular space between existing pipeline and lining system

3.1.14

grouting

process of filling voids around the lining system

3.1.15

system test pressure

STP

hydrostatic pressure applied to the installed pipeline system in order to ensure its integrity and leaktightness

3.1.16

simulated installation

installation of a lining system into a simulated host pipeline, using representative equipment and processes, to provide samples for testing which are representative of an actual installation

3.1.17

simulated host pipeline

section of pipeline, which is not part of an operational network, but which replicates the environment of an operational network

3.1.18

technique family

group of renovation techniques which are considered to have common characteristics for standardization purposes

3.1.19

independent pressure pipe liner

liner capable on its own of resisting without failure all applicable internal loads throughout its design life

3.1.20

interactive pressure pipe liner

liner which relies on the existing pipeline for some measure of radial support in order to resist without failure all applicable internal loads throughout its design life

3.1.21

fully structural renovation

use of an independent pressure pipe liner, which is capable of resisting all external loads irrespective of the condition of the existing pipeline

3.1.22

semi-structural renovation

use of an interactive pressure pipe liner which is capable of long-term hole and gap spanning at operational pressure

3.1.23

type testing

testing performed to prove that a material, component, joint or assembly is capable of conforming to the requirements given in the applicable standard

3.1.24

CCTV

system comprised of cameras, recorders, interconnections and displays that are used to inspect pipelines

3.2.1

lining with continuous pipes

lining with pipe made continuous prior to insertion ここで, the diameter of the lining pipe remains unchanged

3.2.2

lining with close-fit pipes

lining with a continuous pipe, of which the cross-section is reduced to facilitate installation and reverted after installation to provide a close fit to the existing pipe

3.2.3

lining with cured-in-place pipes

lining with a flexible tube impregnated with a thermosetting resin, which produces a pipe after resin cure

3.2.4

lining with discrete pipes

lining with pipes shorter than the section to be renovated, which are jointed to form a continuous pipe only during insertion, the cross-section of the lining pipe remaining unchanged

3.2.5

lining with adhesive-backed hoses

lining with a reinforced hose which relies on an adhesive bond to the existing pipeline to provide resistance to collapse

Figure 2 — Technique families for renovation of underground drainage and sewerage networks under pressure using plastics pipes, within the scope of pipeline rehabilitation techniques

a	This document is applicable.

3.3.1

nominal size

DN

numerical designation of the size of a component, which is a convenient round number approximately equal to the inside or outside diameter in millimetres

3.3.2

nominal size DN/OD

DN/OD

nominal size, related to the outside diameter

[SOURCE:ISO 4427‑1:2007, 3.1.1.2, modified to include abbreviation in term to distinguish it from term defined by 3.3.1.]

3.3.3

nominal outside diameter

d_n

specified outside diameter, in millimetres, assigned to a nominal size DN/OD

Note 1 to entry: For thermoplastics solid-wall components, the value of nominal outside diameter is identical to the minimum mean outside diameter, d_em,min.

[SOURCE:ISO 4427‑1:2007, 3.1.1.3, modified by addition of Note 1 to entry.]

3.3.4

mean outside diameter

d_em

value of the measurement of the outer circumference of a pipe or spigot end of a fitting in any cross-section, divided by π (= 3,142) and rounded to the next greater 0,1 mm

[SOURCE:ISO 4427‑1:2007, 3.1.1.5]

3.3.5

minimum mean outside diameter

d_em,min

minimum value of the mean outside diameter as specified for a given nominal size

[SOURCE:ISO 4427‑1:2007, 3.1.1.6]

3.3.6

wall thickness

e

value of the measurement of the wall thickness at any point around the circumference of a component

3.3.7

mean wall thickness

e_m

arithmetic mean of a number of measurements of the wall thickness regularly spaced around the circumference and in the same cross-section of a component

3.3.8

minimum wall thickness at any point

e_min

minimum value of the wall thickness at any point around the circumference of a component as specified

[SOURCE:ISO 4427‑1:2007, 3.1.1.11]

3.3.9

nominal wall thickness

e_n

numerical designation of the wall thickness of a component, which is a convenient round number, approximately equal to the manufacturing dimension in millimetres

Note 1 to entry: For thermoplastics solid-wall components, the value of nominal wall thickness, e_n, is identical to the specified minimum wall thickness at any point, e_min.

[SOURCE:ISO 4427‑1:2007, 3.1.1.9, modified by addition of Note 1 to entry.]

3.3.10

standard dimension ratio

SDR

ratio of the nominal outside diameter, d_n, to its nominal wall thickness, e_n

[SOURCE:ISO 4427‑1:2007, 3.1.1.15]

3.3.11

internal pressure resistance

capability to withstand internal pressurization by water or gas

3.3.12

ring stiffness

resistance of a pipe to diametric deflection in response to external loading applied along one longitudinal diametric plane

Note 1 to entry: This definition applies to both long and short-term values.

3.4.1

virgin material

material in a form such as granules, powder or liquid, which has not been subjected to use or processing other than that required for its manufacture and to which no reprocessable or recyclable material has been added

3.4.2

own reprocessable material

material prepared from unused pipes and fittings, including trimmings from the production of pipes and fittings, which will be reprocessed in a manufacturer’s plant after having previously been processed by the same manufacturer by a process such as moulding or extrusion and for which the complete formulation is known

3.4.3

external reprocessable material

material from unused products or trimmings which will be reprocessed and which were originally processed by another manufacturer

Note 1 to entry: If a manufacturer has a production of products other than pipes and fittings, reprocessable material from that production is considered as external reprocessable material when used for pipes or fittings production.

3.4.4

recyclable material

material prepared from used products which have been cleaned and crushed or ground

3.5.1

“M” stage

stage as manufactured, before any subsequent site processing of components associated with the particular renovation technique

Note 1 to entry: For pipes and fittings at the “M” stage, see Clauses 5 and 6, respectively.

3.5.2

“I” stage

stage as installed, i.e. in final configuration after any site processing of components associated with the particular renovation technique

Note 1 to entry: For pipes and fittings at the “I” stage, see Clause 8.

3.6.1

nominal pressure

PN

numerical designation used for reference purposes related to the mechanical characteristics of the component of a piping system

Note 1 to entry: Extended definitions of PN applicable to thermoplastics and thermosetting piping systems respectively are given in the relevant other parts of ISO 11297.

3.6.2

allowable operating pressure

PFA

maximum internal hydrostatic pressure that a component is capable of withstanding continuously in service

Note 1 to entry: It is expressed in bars ¹ .

3.6.3

surge

rapid fluctuations of pressure, either positive or negative, caused by flow alterations over short periods of time e.g. due to the switching on or off of pumps or the opening or closing of valves

3.6.4

allowable maximum operating pressure

PMA

maximum internal hydrostatic pressure occurring from time to time, including surge, that a component is capable of withstanding in service

Note 1 to entry: It is expressed in bars.

3.6.5

surge factor

F_surge

value of the ratio PMA/PFA, which is generally a function of pipe material and rate of pressure rise

Note 1 to entry: The value assigned for design can also vary depending upon the anticipated frequency of the surge conditions.

3.6.6

hydraulically pressurised system

system where flow is caused by hydraulic pressure and where the pipe normally operates full

3.6.7

pneumatically pressurized system

system where flow is caused by pneumatic pressure which can be applied either as compressed air upstream or partial vacuum downstream and where the pipe normally operates full