Access hatch

Access hatch

An airtight door system that preserves the pressure integrity of the containment structure of a nuclear reactor, while allowing access to personnel and equipment.

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Part of Speech: noun
Synonym(s):
Blossary:
Industry/Domain: Energy
Category: Nuclear energy
Company: U.S. NRC
Product:
Acronym-Abbreviation:

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Related terms

access hatch

Energy; Nuclear energy

An airtight door system that preserves the pressure integrity of the containment structure of a nuclear reactor, while allowing access to personnel and equipment.

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Natural environment; Coral reefs

The process of an embryo leaving the egg envelopes.

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Military; General military

An opening in a ship’s deck giving access to cargo holds.

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Transportation; Boats & ships

An opening, generally rectangular, in a ship's deck providing access into the compartment below.

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Agriculture; Rice science

In the nymph or larva of insects, to come out of the egg after the embryo has completed development.

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Automotive; Automobile

Rear luggage access door, usually with a fixed glass window. It is hinged at the top and hangs vertically or at an angle.

alpha particle

Energy; Nuclear energy

A positively charged particle ejected spontaneously from the nuclei of some radioactive elements. It is identical to a helium nucleus that has a mass number of 4 and an ...

attenuation

Energy; Nuclear energy

The process by which the number of particles or photons entering a body of matter is reduced by absorption and scattered radiation.

binding energy

Energy; Nuclear energy

The minimum energy required to separate the nucleus of an atom into its component neutrons and protons.

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A reaction that initiates its own repetition. In a fission chain reaction, a fissionable nucleus absorbs a neutron and fissions spontaneously, releasing additional neutrons. ...

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Energy; Nuclear energy

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annual limit on intake (ALI)

Energy; Nuclear energy

As defined in Title 10, Section 20.1003, of the Code of Federal Regulations (10 CFR 20.1003), ALI is the derived limit for the amount of radioactive material taken into the body ...

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