LDU

Leakage Detection Unit (API-Plan 75, 76)

The vessel can have a level switch installed so that an alarm can be sounded when the vessel is almost full & a flanged bottom so that internal cleaning can be administered

LDV

Leakage Detection Vessel (API Plan 65)

In API Plan 65 arrangements, leakage from the seal faces is collected via a drain port and directed to a liquid-collections system via a vessel equipped with a high-level alarm.