Chemical Engineering August 2014 - 23

Ventyx
Figure 1. Ventyx's Process Safety Management solution was designed to give
chemical and oil-and-gas companies an enterprise-wide view of process safety risks,
enabling clients to track deviations to safeguards, evaluate the risks and prioritize
corrective actions in a timely manner
awareness through the use of pattern
recognition, properly grouped
information and by incorporating
decision support information within
the displays, such as alarm limits
and alarm documentation.
In the past, operators were bombarded
with alarms, which often
caused them to miss important
alarms. The new alarm-management
tool improves the alarm system
so that operators get the right
alarm at the right time to help
them figure out what's going on and
respond to avoid upset conditions.
Boundary management is an extension
of alarm management. This
tool serves as a central repository
for operational boundary limits. It
dynamically monitors constraints
in realtime for exceedance notifications.
Also, control-loop optimization
provides an analysis of both regulatory
and advanced control loops to
identify process interactions and
variability, hardware issues or poor
tuning. It continuously monitors
and prioritizes loops based on the
greatest benefits to the facility.
" The solutions make the plant
more effective and efficient by making
people in the plant more reliable
because they now have an easier
way to view, manage and interpret
data, " says Carrigan. " Optimizing
the human/automation relationship
leads to better management and increased
safety. "
Another major safety issue for
chemical processors, which can now
be handled thanks to advances in
software products, is overpressure
protection, says Ron Beck, director
of product marketing for aspenONE
Engineering at Aspen Technology
(Burlington, Mass.; www.aspentech.
com). " These overpressure incidents
are usually due to the overpressure
protection systems not being adequate, "
says Beck. " And one of the
biggest causes of this is incorrect
data transcription. Typically overpressure
protection analysis has
been done by hand with calculations
or on spreadsheets. People copy data
from modeling tools for use in these
methods, but often make mistakes
while doing so. Another common
mistake is that accurately sizing
safety relief valves requires insight
into the entire, interconnected system.
However, finding this information
is difficult because most facilities
manage pressure safety valves
using a list, which prohibits a view
of the system as a whole. "
As a result, Aspen Technology
introduced aspenONE Version 8.6
software with an expansion into
process-safety analysis with expanded
overpressure protection
capabilities. The software offers
the ability to design and rate safety
relief valves, as well as run fireanalysis
scenario calculations that
take into account latent heat and
temperature change. Rupture disk
sizing has also been added.
In addition, aspenONE V8.6 tackles
dynamic modeling of compresCircle
10 on p. 68 or go to adlinks.che.com/50979-10
ChemiCal engineering www.Che.Com august 2014 23
Liquids
to money to m
http://www.aspentech http://adlinks.che.com/50979-10 http://www.Che.Com
Chemical Engineering August 2014

Table of Contents for the Digital Edition of Chemical Engineering August 2014
