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

FUN 2 EO: 1.4-k

1 / 12

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

Mark II and Mark III

Only Mark III

Only Mark I

Mark I and Mark II

2 / 12

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

A concrete slab

A moisture separator

An elliptical steel dome

A suppression pool

3 / 12

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

To condense steam from the reactor

To support the floor slabs of the reactor building

To prevent fission products from escaping

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

4 / 12

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

Steam Dryer

Emergency core cooling systems

Drywell

Suppression chamber

5 / 12

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

1 to 2 minutes

3 to 5 seconds

30 to 45 seconds

10 to 15 seconds

6 / 12

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

To store the reactor's spent fuel

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

To control torsional strain along the Main Turbine Shaft

To generate steam

7 / 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

8 / 12

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

Wetwell

Suppression pool, Torus, or containment

Reactor vessel

Main Turbine

9 / 12

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

Steam Dryer

Safety Relief Valves

Moisture Separators

Main Steam Isolation Valves (MSIV)

10 / 12

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

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

It condenses rapidly inside the pipes

It causes torsional strain along the Main Turbine Shaft

It emits low energy gamma photons

11 / 12

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

Safety Relief Valves

N-16

Steam Dryer

MSIV

12 / 12

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

To rapidly condense directed steam

To provide a heat sink

To confine fission products

To support the drywell

Your score is

PreviousFUN 2 EO: 1.4-kNext

Share your results with your friends!!