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General
Services
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Specialty
Services
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Transient
Analysis
AES
is
experienced
in
various transient analyses for various power plant
systems. This includes performing water hammer analysis, two phase flow
analysis, start-up transients, and evaluations for High Energy Line
Break (HELB).
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- Water
Hammer
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AES has
performed evaluations for various transients that can cause water
hammer effects on piping systems. These analyses were performed using
various software codes such as GOTHIC and RELAP, or simplified methods
using hand calculations. Our experience includes both determining the
transient forces on the system, and evaluation of the system for these
transient loads using various piping analysis software codes such as
AUTOPIPE, ADLPIPE, and other software codes.
AES has
extensive experience in High Energy Line Break (HELB) Evaluations. This
includes HELB design basis reconstitution, sub compartment pressure and
temperature profile determination in accordance with the large breaks
and leakage crack criteria for the early vintage nuclear plants
established by the original 1972 Giambusso letter and its subsequent
updates including the GL- 87-11 and its associated USNRC BTP MEB 3-1,
Rev. 2. AES performs these analyses using the GOTHIC software to
establish compartment pressures and temperatures for various accident
scenarios and their combinations such as LOCA , HELB, LOOP, and
Appendix R. AES also performs jet impingement calculations and designs
barriers to protect nearby equipment important to safety.
AES performs analysis of piping systems
for two phase flow using proprietary software, Powerflow. Additional
capability is available for pressure drop calculations through piping
systems and orifices. AES has performed such analyses for a number of
nuclear power applications.
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- HELB Analysis
- Jet
Impingement/Heat-up Analysis
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- 2-Phase Flow
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