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

FUN 2 EO: 1.4-k

1 / 12

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

Safety Relief Valves

MSIV

Steam Dryer

N-16

2 / 12

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

To rapidly condense directed steam

To support the drywell

To confine fission products

To provide a heat sink

3 / 12

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

An elliptical steel dome

A moisture separator

A concrete slab

A suppression pool

4 / 12

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

Only Mark I

Mark I and Mark II

Mark II and Mark III

Only Mark III

5 / 12

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

Steam Dryer

Main Steam Isolation Valves (MSIV)

Safety Relief Valves

Moisture Separators

6 / 12

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

To provide a heat sink

To store the spent fuel

To serve as the main steam system

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

7 / 12

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

To store the reactor's spent fuel

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 generate steam

8 / 12

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

10 to 15 seconds

3 to 5 seconds

1 to 2 minutes

30 to 45 seconds

9 / 12

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

It causes torsional strain along the Main Turbine Shaft

It emits low energy gamma photons

It condenses rapidly inside the pipes

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

10 / 12

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

Wetwell

Main Turbine

Reactor vessel

Suppression pool, Torus, or containment

11 / 12

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

Steam Dryer

Suppression chamber

Emergency core cooling systems

Drywell

12 / 12

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

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

To condense steam from the reactor

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