Abs |
Absolute |
ASP |
Accident sequence precursor (PRA term) |
Acre-ft |
Acre-foot |
AE |
Action Evaluation |
AR |
Action Request |
ALJ |
Administrative Law Judge |
AL |
Administrative Letter (NRC) |
ACRS |
Advisory Committee on Reactor Safeguards |
|
Aftercooler |
|
Air-cooled |
|
All-inclusive |
AVT |
All volatile treatment |
AOT |
Allowed outage time |
ARC |
Alternate repair criteria |
Ac |
Alternating current |
ACI |
American Concrete Institute |
AIEE |
American Institute of Electrical Engineers |
AISC |
American Institute of Steel Construction |
ANSI |
American National Standards Institute |
ANEC |
American Nuclear Energy Council |
ANI |
American Nuclear Insurers |
ANS |
American Nuclear Society |
API |
American Petroleum Institute |
ASTM |
American Society for Testing and Materials |
ASCE |
American Society of Civil Engineers |
ASME |
American Society of Mechanical Engineers |
ASA |
American Standards Association |
AWS |
American Welding Society |
AWG |
American wire gauge |
A/amp |
Ampere |
A/cm2
|
Ampere per square centimeter |
A-hr/amp-hr |
Ampere-hour |
AM |
Amplitude modulation |
A.m. |
Ante meridiem–before noon |
ATWS |
Anticipated transient without scram |
ATWT |
Anticipated transient without trip |
Antilog/log-1
|
Antilogarithm |
|
Antireverse |
AVB |
Antivibration bar |
ALARA |
As low as is reasonably achievable |
|
As-built (adj or noun) |
Atm |
Atmosphere |
AEC |
Atomic Energy Commission |
AIF |
Atomic Industrial Forum |
At. no. |
Atomic number |
At. % |
Atomic percent |
ASLAB |
Atomic Safety and Licensing Appeal Board |
ASLB |
Atomic Safety and Licensing Board |
At. wt |
Atomic weight |
AMSAC |
ATWS mitigation system actuation circuitry |
AFR |
Audit Finding Report |
AIT |
Augmented inspection team (NRC) |
ANI |
Authorized Nuclear Inspector |
ACI |
Autoclosure interlock |
|
Autostart |
|
Autostop |
AB |
Auxiliary building |
AFW |
Auxiliary feedwater |
ASW |
Auxiliary saltwater |
Avg |
Average |
AO |
Axial offset |
AOC |
Axial offset control |