The Clearance by the Health Authorities

Related Terms

FEELER GAUGE

A tool used for measuring the clearance between two surfaces.

COCKET

The official shipping seal; customs clearance form

ENTRY

A customs form used for the clearance of ships or merchandise.

SILTING

A failure generally associated with a valve which movements are restricted due to small particles that have wedged in between critical clearances (e.g., the spool and bore.) .

CATENARY

The curve formed by a uniform cable supported only at its ends. Navigators are concerned with the catenary of overhead cables which determines clearance underneath, and the catenary of the anchor rode, which in part determines holding power and swing circle.

CLEARANCE

The clear space between two objects, such as the nearest approach of a vessel to a navigational light, hazard to navigation, or other vessel

DEEP WATER ROUTE

A route for deep draft vessels within defined limits which has been accurately surveyed for clearance of sea bottom and submerged obstacles as indicated on the chart.

LABYRINTH SEAL

A clearance seal with no friction contact. Used on turbines as shaft seals.

WEAR RING

A replaceable metal ring inserted in pump casing. Minimizes clearance with rotating parts in order to restricted internal leakage in a pump.

FIT

The amount of internal clearance in a bearing. Fit can also be used to describe shaft and housing size and how they relate to the bore or outside diameter.

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