Hydrocarbon Processing - July 2022 - 21

Valves, Pumps and Turbomachinery
Due to the metallic sealing in this connection, the required
surface pressures in this range are generally higher than the
permitted gasket tension. Excessive tension is created in the
sealing surface between the rupture disc and holder with targeted
design measures. This allows the optimum surface pressure
to be set in the sealing surface without the surface pressure
in the gaskets increasing to an unacceptable extent.
In addition, when calculating the installation torque, it
must be determined whether the components of the flange
system are overloaded in the respective constellation. Installing
a rupture disc and a holder in a flange system causes the
mechanical properties of the overall system to change. This
results in greater flange rotation and, consequently, a higher
tension level in the flange.
The rupture disc and gaskets must be replaced if an overloading
of the process triggers the rupture disc. However, the
flange and holder are usually used multiple times. The flange
and holder must retain function-securing geometry after repeated
dismantling and installation. Therefore, permanent
plastic deformations in the loading conditions installation, testing
and operation are not permitted. A strength test must be
carried out for the configuration, ensuring a sufficient distance
from the material's elasticity limit for all loading conditions.
All required calculations for configuring the installation
torque cannot be performed with sufficient precision using
analytical calculation principles. The author's company uses
virtual engineering with the finite element method to consider
the complexity and the ever-greater challenges of the installation
torque configuration. This makes it possible to depict the
flange system, including all components, as a digital twin and
simulate its mechanical behavior before manufacture and commissioning.
With this digital twin, the mutual influences of all
components are considered in advance.
The simulation results and empirical knowledge are then
used to optimize the individual components until all are in accordance
with their installation requirements; then, the parts
are manufactured and installed.
The author's company is one of the first rupture disc manufacturers
to offer such calculation services. Involving an engineering
firm or similar service provider for plant operators is
no longer necessary. The customer receives a complete solution
with added value-reliable simulation results calculated
by specialists, which then flow into the customer-specific manufacture
of the rupture discs.
CARINA WEGENER has worked for more than 10 yr in process
safety, namely pressure relief, helping to protect processes in
various industries, including chemical, pharmaceutical, and
oil and gas. Ms. Wegener has studied mechanical engineering,
focusing on numerical calculation methods, especially finite
element methods, computational fluid dynamics and fluidstructure
interaction. Since joining REMBE GmbH Safety +
Control in 2012, she has been responsible for all calculation tasks as the Head
of REMBE Computer Aided Engineering. Operational safety is a mission to
which REMBE has dedicated itself for almost 50 yr through consulting,
engineering, products and service.
In LNG,
experience matters
The LNG industry is constantly evolving, and we can
help you lead the way. We provide custom-engineered
compression and expansion technology that boosts your
productivity throughout the LNG value chain. For over 40 years
we have engineered advanced process equipment that delivers
maximum efficiency in modular, compact packaging. We offer endto-end
centrifugal compressors, screw compressors, turboexpanders,
Compander™ and centrifugal fluid pumps customized for every LNG
application, from small scale to large scale, onshore and off.
Gastech, Milan (Italy)
Booth - 11L41
Learn more at www.atlascopco-gap.com
Visit us at
5th
to 8th
September 2022
Hydrocarbon Processing | JANUARY 2022 21
http://www.atlascopco-gap.com
Hydrocarbon Processing - July 2022

Table of Contents for the Digital Edition of Hydrocarbon Processing - July 2022
