primary containment

But he said the pressure in the primary containment vessel had not fallen.

Unit No. 2 suffered a hydrogen explosion inside the primary containment.

That in turn sits within a larger steel structure, the primary containment vessel.

If the aerosol risk is high (see below), primary containment equipment shall be used.

Most importantly, the spent fuel resides long periods of time outside the primary containment.

For the primary containment pressure vessel in a nuclear reactor we obviously require a very low risk of failure.

Though the primary containment appeared to be functioning, "we believe that the spent fuel pool level is decreasing."

Each reactor is surrounded by a primary containment vessel.

Outside the primary containment, plant radiation-level measurements have also varied significantly.

Operators now have the controls necessary to protect against a rupture of primary containment, however remote.

Gloves must be worn when radioactive substances or their primary containment are being manipulated.

It did not clearly state that the primary containment vessel, which protects the core, had been breached.

Inside primary containment, levels are much higher.

Duane Arnold's primary containment shell was undersized in the original design.

He said there was also possible damage in the bottom part of the primary containment vessel, but that this was not confirmed.

He said the breach of the primary containment structure could lead to the release of more radioactive materials.

In case of a full melt-down, the fuel would most likely end up on the concrete floor of the primary containment building.

BSCs and other primary containment devices to be provided.

Reactors are surrounded by four to eight inches of steel, called the primary containment vessel, according to this Reuters analysis.

In some cases, residues were so heavy that the condition of the primary containment could not be inspected and as a result was called into question.

Consideration should be given to the addition of this signage to relevant process and primary containment equipment used to contain viable organisms.

The leaked solution was safely recovered into primary containment using originally installed steam ejectors.

A worker monitoring live camera images noticed that what appeared to be steam was hovering just above the primary containment vessel at 8.20am on Thursday.

The Metsamor power station is one of the few remaining nuclear reactors of its kind that were built without primary containment structures.

Within the primary containment of reactors 1, 2, 3 and 4, widely varying levels of radiation were reported: