ISO 18797-1:2016 石油、石油化学、天然ガス産業—コーティングとライニングによるライザーの外部腐食保護—パート1：エラストマーコーティングシステム-ポリクロロプレンまたはEPDM | ページ 6

3.1

atmospheric zone

areas of offshore structures and riser pipes that extend upward from the splash zone (3.18) up to top decks of the platform (3.12) which are exposed to sun, wind, sprays and rains

3.2

applicator

organization appointed by contractor (3.3) / client (3.4) to perform application of coatings/linings on riser pipes as per project procedures prepared in accordance with this document

3.3

contractor

organization appointed by the client (3.4) to perform the works (3.21) in accordance with this document

3.4

client

organization for which professional services are rendered or person that receives a product

3.5

dew point

temperature at which moisture in air will condense out on to a solid surface, like blast-cleaned metal surface or newly coated surfaces

3.6

dust

loose fine particulate matter present on a steel surface prepared for rubber lining, arising from blast cleaning or other grinding activities or from worksite environments

3.7

elastomeric coatings

flexible skins, permanently bonded to risers (3.15) and structures

Note 1 to entry: Elastomeric coatings are designed and developed to withstand aggressive environment or conditions affecting platform structures and risers in marine splash zones. These provide add on durability to designed life to structures and risers in offshore environment, while providing resistance to seawater ingression, ozone oxidation, erosion and abrasion.

3.8

ethylene propylene diene monomer

EPDM

elastomeric compound or synthetic rubber applied as a protective coating on riser pipes in splash zones (3.18) to withstand erosion of riser pipe material caused by continuous exposure to seawater and wave actions

Note 1 to entry: EPDM provides resistance to outdoor and high temperature services in the range of -35 °C to 120 °C.

3.9

flash rusting

slight rust formation on a freshly blast-cleaned carbon steel surfaces due to humidity in air and if not painted within 4 h from start of blasting

3.10

holiday

discontinuity in a protective coating (cracks, pinholes, voids, etc.) that exhibits electrical conductivity when exposed to specific voltage

Note 1 to entry: Holiday also means a small defect in the lining that would permit corrosion of substrate under service conditions for which lining is designed. The term can be considered synonymous with cracks or mechanical damages occurring in rubber lining, while in services.

3.11

manufacturer

organization responsible for the manufacture of coating material(s)

3.12

platform

offshore structure used to accommodate oil and gas wells related production equipment, pipelines and living quarters

3.13

production batch

one loading capacity of the internal mixer used for preparing the mixed rubber prior to forming strip of sheet

3.14

polychloroprene

light yellow synthetic rubber compound obtained by polymerization of chloroprene

Note 1 to entry: Polychloroprene is commonly known as polychloroprene compound.

Note 2 to entry: Polychloroprene is applied as a protective coating on riser pipes in splash zones (3.18) and below to withstand erosion of riser pipe material caused by continuous exposure to seawater and wave actions. It provides resistance to outdoor and services temperature in the range of −35 °C to 90 °C.

3.15

riser

section of pipeline carrying crude/gas between ocean floor and upper decks of platform (3.12) on offshore structures

3.16

shore hardness

methods for determining the hardness of materials by means of durometer

3.17

site

lands and waters and other places on, under, in or through which the works (3.21) are to be carried out and any other lands, waters or places provided by the client (3.4) for the purposes of the contract together with any other places designated in the contract

3.18

splash zone

external surfaces of an offshore structure or pipeline that are, periodically wet and dry by the influence of the astronomical tides, winds and waves, the limits are as defined by the contract specifications

3.19

surface profile

micro-roughness of surface generally expressed as an average of height of highest peaks relative to lowest valleys sometime referred to as amplitude

3.20

vulcanization

curing of elastomeric materials by chemical reaction under heat and pressure to improve strength and elasticity of applied rubber lining

3.21

works

activities to be executed in accordance with the contract, as defined in the specified conditions and including both permanent and temporary activities