ISO 12176-4:2003 プラスチックパイプおよびフィッティング—ポリエチレンシステムの融合接合用機器—パート4：トレーサビリティコーディング | ページ 6

3.1

成分

パイプ、エルボ、Tピース、レジューサー、サドル、ソケットフィッティング、バルブ、またはパイプおよび/または付属品を接続するために使用されるその他の要素など、配管システムの一部としてガスネットワークに組み込まれたアイテム（例：電気融合ソケットフィッティング、メカニカルフィッティング）

3.2

PE アセンブリ

ポリエチレン (PE) パイプ、PE パイプとフィッティング、パイプまたはフィッティングとサドル、バルブ、またはその他のコンポーネントの組み合わせで、電気融合、加熱ツールを使用した融合、誘導融合、または機械的圧縮によって組み立てられたもの

3.3

トレーサビリティ

情報の履歴、目的、所在を記録により追跡できる能力

3.4

fusion joint made using a heating tool

joint made by heating the ends of two components, the surfaces of which match, by holding them against a heating tool until the PE material reaches fusion temperature, removing the heating tool quickly and pushing the two softened ends against one another, e.g. butt fusion joint, socket fusion joint or saddle fusion joint

3.5

electrofusion joint

joint made between a PE electrofusion socket or saddle fitting and a pipe or spigot end fitting, the jointing surfaces being heated by a current flowing through a heating element incorporated in each jointing surface (the Joule effect), causing the material adjacent to the heating elements to melt and the pipe and/or fitting surfaces to fuse together

3.6

mechanical joint

joint made by assembling a PE pipe with a fitting that generally includes a compression seal to ensure pressure integrity, leaktightness and resistance to end loads

Note 1 to entry: A support sleeve inserted into the pipe bore may be used to provide a permanent support for the PE pipe to prevent creep in the pipe wall under radial compressive forces. The metallic part of the fitting can be jointed to a metal pipe by screw threads, compression joints, welded or brazed flanges or other means.

3.7

induction fusion joint

joint made between PE pipes and/or socket or saddle fittings using induction fusion techniques, the jointing surfaces being heated by a current flowing through a heating element incorporated in each jointing surface (the Joule effect), causing the material adjacent to the heating elements to melt and the pipe and/or fitting surfaces to fuse together

Note 1 to entry: The heat energy supply source is an induction coil fitted in a manner designed to generate and transmit the heat flux necessary for melting to take place at the PE/PE interface.

3.8

fusion-jointing equipment operator

person trained and authorized to carry out fusion jointing between PE pipes and/or fittings based on a written procedure agreed by the pipeline operator

Note 1 to entry: The operator may be trained and authorized to carry out one or more fusion-jointing procedures, involving the operation of manual and/or automatic fusion-jointing equipment.

3.9

fusion-jointing record

record including information and data related to the fusion-jointing equipment, the fusion-jointing operation and traceability

3.10

digit

integer from zero to nine

3.11

character

integer from zero to nine or letter or other symbol

Note 1 to entry: Letters and other symbols are represented by a two-digit number as given in Table B.1.

3.12

virgin material

thermoplastics material in a form such as granules or powder which has not been previously processed other than for compounding and to which no reprocessable or recycled materials have been added

3.13

reprocessable material

thermoplastics material prepared from clean unused rejected pipes, fittings or valves, produced in a manufacturer’s plant by a process such as injection-moulding or extrusion, which will be reprocessed in the same plant

Note 1 to entry: Such material may include trimmings from the production of such pipes, fittings and valves.

3.14

standard dimension ratio SDR

SDR

numerical designation of a pipe series, which is a convenient round number approximately equal to the ratio of the nominal outside diameter d_n to the nominal wall thickness e_n

3.15

melt mass-flow rate MFR

MFR

value relating to the viscosity of a molten thermoplastic material when extruded at a specified temperature and load, expressed in grams per 10 min (g/10 min)