As per MARPOL, the rating for damage to living resources of 10-100 mg/l

Related Terms

HAZARD

A source of potential harm or damage or a situation with potential for harm or damage.

OVERLOAD CAPACITY

Current, voltage, or power level beyond which permanent damage occurs.

NONDESTRUCTIVE EVALUATION

A technique for probing and sensing material structure and properties without causing damage (as opposed to revealing flaws and defects).

LATCH-UP PHENOMENON

In a bipolar or MOS integrated circuit, the generation of photocurrents by ionizing radiation which can provide a trigger signal for a parasitic pnpn circuit and possibly result in permanent damage or operational failure if the circuit remains in this state.

IMPACT ROLL

An idler roll protected by a covering of a resilient material from the shock of the loading of material onto a conveyor belt, so as to reduce the damage to the belt.

BRINELLING

Permanent deformation of the bearing surfaces where the rollers (or balls) contact the races. Brinelling results from excessive load or impact on stationary bearings. It is a form of mechanical damage in which metal is displaced or upset without attrition.

TURBINE RELIEF VALVE

The turbine casing is fitted with spring-loaded relief valves to prevent damage by excessive steam pressure at the low-pressure end if the exhaust valve is closed accidentally. Some casings on smaller turbines are fitted with a sentinel valve, which serves only to warn the operator of over-pressure of the exhaust end. A spring-loaded relic valve is needed to relieve high pressure.

CHAIN-SHOT

Cannon balls linked with chain used to damage rigging and masts.

DEBUNK

The process of removing fuel from a vessel. After a ship wreck, a 'debunkering' operation will be performed in an effort to minimize damage and protect the environment from fuel spills.

GRAPESHOT

Small balls of lead fired from a cannon, analogous to shotgun shot but on a larger scale. Similar to canister shot but with larger individual shot. Used to injure personnel and damage rigging more than to cause structural damage.

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