Chemical Engineering March 2019 - 37

Cover Story
Thermal or infrared imaging examination.
Using this technique, one aims to identify
where the insulation is wet as opposed to
dry. Based on thermal or infrared imaging,
a heat picture of the surface is obtained.
This technique detects areas where the insulation
has been breached; it is not used
during surveys where remaining thickness
values are needed. Once the insulation is
dry, the suspect area is not flagged.
Neutron backscatter examination. This
technique uses a radioactive source to
identify wet insulation. It does not assess remaining
thickness and has specific applications,
such as screening for locations where
stress-corrosion
cracking
can
develop.
Once the insulation is dry, the suspect area is
not flagged.
Other NDE techniques. NDE technologies
are evolving rapidly and those less commonly
used have not been described in
this article. Updates on applications of the
technologies are often available from the
American Society for Nondestructive Testing
(Columbus, Ohio; www.asnt.org), NACE
International, API and in journals such
as Inspectioneering.
FIGURE 10. Here, GWT was
used to identify CUI pits
Rope access services. This innovative
technology is a backbone for today's CUI
programs. Specialized harnesses and ropes
are used to reach difficult-to-access areas
safely and with minimum process disruptions.
An inspection project comprising more
than 1,400 piping circuits [4] was completed
using rope access, aerial work platforms and
existing scaffolding. Rope access was used
for NDE and to refurbish damaged insulation
and piping (Figure 11). Without rope access,
the cost and time needed to complete the
project would have been prohibitive.
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Chemical Engineering March 2019

Table of Contents for the Digital Edition of Chemical Engineering March 2019

Contents
Chemical Engineering March 2019 - Cover1
Chemical Engineering March 2019 - Cover2
Chemical Engineering March 2019 - Contents
Chemical Engineering March 2019 - 2
Chemical Engineering March 2019 - 3
Chemical Engineering March 2019 - 4
Chemical Engineering March 2019 - 5
Chemical Engineering March 2019 - 6
Chemical Engineering March 2019 - 7
Chemical Engineering March 2019 - 8
Chemical Engineering March 2019 - 9
Chemical Engineering March 2019 - 10
Chemical Engineering March 2019 - 11
Chemical Engineering March 2019 - 12
Chemical Engineering March 2019 - 13
Chemical Engineering March 2019 - 14
Chemical Engineering March 2019 - 15
Chemical Engineering March 2019 - 16
Chemical Engineering March 2019 - 17
Chemical Engineering March 2019 - 18
Chemical Engineering March 2019 - 19
Chemical Engineering March 2019 - 20
Chemical Engineering March 2019 - 21
Chemical Engineering March 2019 - 22
Chemical Engineering March 2019 - 23
Chemical Engineering March 2019 - 24
Chemical Engineering March 2019 - 25
Chemical Engineering March 2019 - 26
Chemical Engineering March 2019 - 27
Chemical Engineering March 2019 - 28
Chemical Engineering March 2019 - 29
Chemical Engineering March 2019 - 30
Chemical Engineering March 2019 - 31
Chemical Engineering March 2019 - 32
Chemical Engineering March 2019 - 33
Chemical Engineering March 2019 - 34
Chemical Engineering March 2019 - 35
Chemical Engineering March 2019 - 36
Chemical Engineering March 2019 - 37
Chemical Engineering March 2019 - 38
Chemical Engineering March 2019 - 39
Chemical Engineering March 2019 - 40
Chemical Engineering March 2019 - 41
Chemical Engineering March 2019 - 42
Chemical Engineering March 2019 - 43
Chemical Engineering March 2019 - 44
Chemical Engineering March 2019 - 45
Chemical Engineering March 2019 - 46
Chemical Engineering March 2019 - 47
Chemical Engineering March 2019 - 48
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Chemical Engineering March 2019 - 76
Chemical Engineering March 2019 - Cover3
Chemical Engineering March 2019 - Cover4
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