ISO 28765:2016 ガラス質および磁器のエナメル—水または都市または産業の排水およびスラッジを貯蔵または処理するためのボルトで固定された鋼製タンクの設計 | ページ 5

3.1

brief

working document which specifies at any point in time the relevant needs and aims of the project, the resources to be provided by the client, the details of the project and any applicable design requirements within which all subsequent briefing (when needed) and designing can take place

3.2

client

person or organization that requires a tank to be provided, altered or extended and is responsible for initiating and approving the brief

3.3

defect

break in the surface of the vitreous enamel

3.4

designer

person or organization responsible for stating the shape and specification of the component to be designed

3.5

design life

service life intended by the designer

3.6

discontinuity

weakness within the vitreous enamel coating that is detected by spark testing

3.7

enamel supplier

person or organization supplying materials for use by the vitreous enameller in the enamelling process

3.8

freeboard

distance between the top of the cylindrical-tank vertical shell wall and the surface of the contained liquid at the specified operating level

3.9

headspace pressure

pressure within a roofed tank above the stored liquid

3.10

inspection area

area inside a boundary 25 mm from any panel edge or hole and outside a boundary 25 mm from any opening or hole within the body of a panel

3.11

liquid

bulk substance that exerts substantially the same vertical and horizontal pressures and has no fixed shape

3.12

maintenance

combination of all technical and associated administrative actions during the service life to retain a tank or its parts in a state in which it can perform its required function

3.13

manufacturer

person or organization that manufactures the tank or parts of the tank

3.14

purchaser

person or organization purchasing the tank from the supplier

Note 1 to entry: The purchaser can also be the client.

3.15

rectification

return of a tank or its parts to an acceptable condition by the renewal, replacement or repair of worn, damaged or degraded parts

3.16

supplier

person or organization that supplies the tank or parts of the tank

3.17

service life

period of time after installation during which the tank or its parts meets or exceeds the performance requirements

3.18

tank

cylindrical, vertical shell for containing liquid, with or without a roof, which is constructed from vitreous-enamelled curved steel panels bolted together on the construction site and mounted on a base which may also form the floor of the container

3.19

vitreous enameller

person undertaking and controlling the process of preparing the steel sheets and applying the vitreous-enamel coating to the surfaces of the steel sheets

Note 1 to entry: The vitreous enameller will normally be the manufacturer.

3.20

vitreous enamel

substantially vitreous, or glassy inorganic silica coating bonded to metallic substrate by fusion at a temperature above 480 °C

Note 1 to entry: This coating is applied for protective functional and/or aesthetic purposes.

Note 2 to entry: This coating is produced by the proprietary formulation of silica glass, minerals and clays to produce a sprayable medium, dry or suspended in water on to the surface of the metallic substrate, and its subsequent fusion bonding.