EAL Rad Effluents and FP barriers

Question 1

What EAL does the station activate the TSC and gain additional resources?

Answer 1

ALERT!

Question 2

Define Imminent as it is used in EALs

Answer 2

Trajectory of events or conditions is such that an EAL will be met within a relatively short time, regardless of mitigations trategies.

Question 3

Define Site Boundary as it pertains to EAL

Answer 3

Boundary of reactor site beyond which the land or property is not owned, lease or controlled by the company.

Question 4

Define UNPLANNED as it pertains to EALs

Answer 4

A parameter change or event that is 1) not the result of an intended evolution or 2) an expected plant response to a transient. it may be known or unknown.

Question 5

Define VALID as it pertains to EALs

Answer 5

Indication, report or condition is considered to be valid when it is verified 1) an imstrument channel check, 2) indications on related or redundant indicators or 3) by direct observation by plant personnel, such that the doubt related to the indicators operability, existence or accuracy is removed.

Question 6

Describe the category R Abnormal Rad Release / Rad Effluent

Answer 6

Uses direct indicatoin of elevated radiological effluents or area radiation levels.

May be indicative of containment failures or even be of sufficient levels to require PARS(GE only)

Contains the following subcategories:
Radiological effluents

Irradiated fuel events

Area Radiation levels

Question 7

State the effluent monitors used to classify a R - category event.

Answer 7

RU-143 and RU-144 Plant Vent Low/High monitors.

Low will never be above an ALERT

High will never be below an SAE

RU-145 and RU-146 - Fuel Bldg Low/High monitors.

FB low will never be anything other than an UE

Question 8

What is the modes of applicability for RA3.2 ALERT - UNPLANNED event results in radiation levels that prohibit or IMPEDE access to Ctrl Bldg 100 ft DC equipment rooms(Remote Sd Panels).

Answer 8

MODES 4 and 5 only.

Question 9

When does the 15 minute ‘clock’ start for EALs?

Answer 9

When the knowledgeable person has the required vital information to make an informed decision. This will not be RP techs or maintenance individuals, but will be the CR staff as the information is passed on.

Question 10

State the three barriers that make up the Fission Product Barrier.

Answer 10

Fuel Clad

RCS

Containment

Question 11

State the criteria needed for the following classifications as it pertains to the FPB.

NOUE

Alert

SAE

GE

Answer 11

NOUE: You cannot have an NOUE from FPB criteria.

Alert: A loss or potential loss of either Fuel Clad or RCS

SAE: Loss or potential loss of ANY 2 barriers.

GE: Loss of any 2 barriers AND loss or potential loss of the 3rd.