Insulating Flange – Definition and Pronunciation

[ˈɪn.sə.leɪ.tɪŋ flændʒ]

What is Insulating Flange?

Insulating flange is a flanged joint incorporating an insulating gasket, sleeves and washers to prevent electrical continuity between pipelines, hose strings or loading arms.

Examples of Insulating Flange

The external surfaces of insulating flanges should be kept clean and unpainted and their insulating properties should be regularly tested.

From “Equipment and cargo system of LNG onshore terminals”.

Insulating flanged section — Insulating flange
Source: Step-by-Step Guide for Safe and Swift Loading of Liquefied Gas

The use of the bonding cable is no longer recommended. The introduction of an electrical discontinuity in the cargo connection, by means of an insulating flange or a length of electrically discontinuous hose, is effective in eliminating the cargo connection current and any resultant sparking.

From “Flammability, Explosion and other Hazards of Liquefied Gas”.