FUN 2 EO: 1.4-k - Radiation Protection Tech.

FUN 2 EO: 1.4-k

1 / 12

In the event of over-pressurization, where do Safety Relief Valves and Emergency Relief Valves exhaust to?

Wetwell

Main Turbine

Suppression pool, Torus, or containment

Reactor vessel

2 / 12

What ensures that containment can be isolated in the BWR Main Steam System?

Safety Relief Valves

Moisture Separators

Main Steam Isolation Valves (MSIV)

Steam Dryer

3 / 12

What is the principal contributor to dose rates in the first minute that the steam is in the system?

Steam Dryer

MSIV

N-16

Safety Relief Valves

4 / 12

In the Mark II containment design, what is the drywell topped by?

A concrete slab

An elliptical steel dome

A moisture separator

A suppression pool

5 / 12

Which containment design consists of a drywell and a wetwell (suppression pool)?

Mark II and Mark III

Only Mark I

Mark I and Mark II

Only Mark III

6 / 12

What is the main purpose of primary containment in Boiling Water Reactor Containments?

To generate steam

To control torsional strain along the Main Turbine Shaft

To contain fission products from a loss of coolant accident and prevent exceeding offsite radiation doses

To store the reactor's spent fuel

7 / 12

How quickly are MSIVs designed to fail closed to stop the flow of steam?

1 to 2 minutes

30 to 45 seconds

3 to 5 seconds

10 to 15 seconds

8 / 12

What is the purpose of the Main Steam System in BWR?

To prevent fission products from escaping

To direct the flow of steam from the reactor to the main turbine and other equipment

To support the floor slabs of the reactor building

To condense steam from the reactor

9 / 12

What radiological hazard does steam in the Main Steam System pose due to short-lived isotopes?

It condenses rapidly inside the pipes

It emits low energy gamma photons

It causes high radiological conditions needing control for Locked High Radiation Areas

It causes torsional strain along the Main Turbine Shaft

10 / 12

In the Mark III containment, what is the role of the drywell?

To serve as the main steam system

To provide a heat sink

To store the spent fuel

To confine steam during a pipe rupture and direct it into the suppression pool

11 / 12

What is the main function of the suppression pool in the Mark III containment design?

To provide a heat sink

To rapidly condense directed steam

To confine fission products

To support the drywell

12 / 12

What surrounds the reactor vessel and recirculation loops in the Mark I containment design?

Drywell

Suppression chamber

Steam Dryer

Emergency core cooling systems

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