Experiment Programs and Test Construction Flashcards
TRA00049
Describe number of loops in use today.
There are 5 NR loops and one commercial loop in use today.
What are the advantages of Drop-In Experiments?
Inexpensive
Easy to install and remove
What are the limitations of Drop-In Experiments?
Exposed to reactor PCS
No monitoring available
No temp control
What are the advantages of Lead-Out Experiments?
Temperature Control
Monitoring and Sampling
What are the limitations of Lead-Out Experiments?
Difficult to handle and ship
Exposed to reactor PCS
Describe how Drop-In Experiments work.
Specimen basket is set into a core location (hole)
Specimen is irradiated.
Describe how a lead experiment works.
Instrumented leads through L or C flanges or out the top of reactor
Typically gas-cooled
Used for both fueled and non-fueled testing
What are the advantages of Loop Experiments?
Max control over temp, pressure, flow and chemistry
High neutron flux
What are the limitations of loop experiments?
Difficult to handle and ship
Draw Standard Loop diagram
Add from slide 11
Draw overhead view of experiment slots
Add from slide 12
What are the NR Loops?
1C/D 2B/D/E
What are the hardware design types for NR tests?
Standard
Large
MUCH
PALM
Backup
What are the test objectives for NR Loops?
Material evaluation: Creep/Corrosion
Fuel Testing
Which loops are for Material Testing?
1C/D 2E
Which loops are for Fuel Testing?
2B/D/E
Which NR loops have up-flow through the experiment?
1C/D 2B/D
Which NR loops have down-flow through the experiment?
2A (center)
Describe flow monitoring for Loops.
In-test flow venturis (orifices)
DP signal transmitted to flow indicators
Signals go to Data Acquisition System
Low flow alarms generated
Describe setup of MUCH tests (Maximum Useful Capacity Holder).
Three channels of in-test flow venturi
Transmitters feed PPS
Low flow results in scram
Test Train Shroud could separate, bypassing flow, cause IPT overheating and possible failure.
Describe PALM tests.
Designed to move specimen location up and down in core
Flux varies as position varies
Simulates startup and shutdown cycles
Can move test 36” in standard IPT
PALM Drive Unit and instrumentation cabinet external to tank
Two tests can cycle in AUTO, but three PALM tests can be inserted
What is the EOIL?
Experiment Operating Information Letter
What is the purpose of the EOIL?
Contains instructions for:
Loop startup/shutdown
Operating parameters
Actions to take for abnormal events
What is the EGIRL?
Experiment General Information and Requirements Letter
