Chemical Engineering February 2023 - 32

*
Produce a design
that allows pre-fabrication
where applicable, so work
can be done under controlled
conditions
*
Provide input into
a daily risk analysis or job
safety analysis (JSA) durMcCurdy
FIGURE
3. A closed-loop filling system, like the one shown in the
diagram, provides a vapor return line from the vessel being filled
to the vessel being emptied
Construction planning. Produce
a design that allows the planning
needed for a safe installation on a
realistic schedule. Effective and thorough
construction planning will reduce
the need to rush work, work
extra hours or take shortcuts with the
construction procedures. The following
are some specific considerations
related to construction planning:
* Produce clear construction drawings
and conduct interdisciplinary reviews
to minimize clashes (for example,
foundation misalignment with pipe layout,
or conduit runs that hit pipe runs)
Before performing
piping or electrical tie-ins,
consult with the owner's
personnel so the appropriate
isolation and de-energizing
tasks are performed. Use equipment
and valve lock-out procedures
that include the appropriate communications
and controls
* Minimize the complexity of lifted
loads, both in weight as well as lifting
equipment or materials in close proximity
to hazards (including electrical
power lines, existing process equiping
construction activities
*
ment and offsite facilities)
* When several crews are working
on site at the same time, consider
the risks of " simultaneous operations, "
so crews stay out of each
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other's work areas
Commissioning. The engineering
professional
should
participate
in
pre-start-up walk-arounds with construction,
design, operations and
maintenance team members with
the following objectives:
* Evaluate trip and pinch points,
head knockers, valves that can be
brushed open, and so on
* Do not forget bollards and other
devices to protect piping and equipment
from impact, both from internal
or external traffic
* Develop a punch list and prioritize
the items as " before " or " after "
startup. These are items that were
missed in design or construction,
such as vents, or drains, equipment
guards, steps, handrails, and labeling.
Some items might be discretionary
if not required for the project to
be safe, meet standards or perform
as designed.
For control rooms. Control-room
design can also help reduce potential
risks and increase safety.
* Consider automation with proSPRING-LOADED!
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well as seat and body
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32
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FEBRUARY 2023
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Chemical Engineering February 2023

Table of Contents for the Digital Edition of Chemical Engineering February 2023
