Chemical Engineering March 2019 - 33

FIGURE 2. This pipe
with a corrosionmonitoring
location
(CML) showed minimal
losses near the CML
(left). Approximately
2.5 ft below the CML
(below), the NPS 2 pipe
had experienced losses
from 0.055 to 0.154 in.
Computed radiography
inspection (right) confirmed
the presence
and severity of this
corrosion
Visit us in nuremberg, Germany
april 9-11, 2019 / Hall 2, Booth 2-346
1/1,000 of an inch. The techniques
and strategies now used are summarized
throughout this article, and
several images are provided to illustrate
CUI in piping and tanks and
the detection methods applied in
industry today.
ding or jacketing are removed or
damaged, making CUI exceedingly
challenging to find (Figure 2). Earlier
reports stated that one single nondestructive
examination (NDE) could
not be used to identify CUI [2]. This
remains the case today as engineers
combine several NDE techniques to
perform CUI assessments. In such
assessments,
corrosion rates are
usually presented in mils per year
(mpy), where one mil is equal to
Inspection
by insulation
removal?
No
RTR?
No
CR?
No
Yes
PEC or
EMAT?
Yes
Perform
PEC or
EMAT
No
No
Remove
insulation
Perform VT/
UTT
End inspection
FIGURE 3. This project flowchart illustrates considerations for ferrous piping NDE selection, including
realtime radiography (RTR), computed radiography (CR), pulsed eddy-current method (PEC), electromagnetic
acoustic testing (EMAT), ultrasonic thickness testing (UTT) and visual testing (VT)
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
MARCH 2019
2018.06 ChemEng_ProcessPlants Powtech.indd 1
CUI Present?
Yes
Pipe OD
<8?
Yes
Perform CR
Yes
Yes
Perform
RTR
Risk-based inspection
Prior to performing NDE, a facility
needing CUI inspections must
have a thorough understanding of
its CUI history. This helps to select
the circuits or equipment on which
the inspections should concentrate.
Inspection for CUI should be considered
for insulated pressure vessels
and piping in intermittent service
or when operating temperatures
fall within the known and accepted
ranges for CUI occurrence for the
material in use. The facility's staff
must determine probability and consequence
of failure in order to establish
the magnitude and scope of
inspection that will be required. The
facility must also determine which
CUI present?
Yes
No
Pipe OD
<8?
Yes
No
End inspection
End inspection
Hydrogenation
Solids blending / drying
Pharma, food, cosmetics
Fine chemicals
Your fast lane to
advanced mixing technology:
Phone: +1 201 825 4684
Ext.: 205
No
End inspection
usa@ekato.com
www.ekato.com
For details visit adlinks.chemengonline.com/73852-16
33
06.02.2019 08:45:33
ProcESS
PlantS For

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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
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Chemical Engineering March 2019 - 45
Chemical Engineering March 2019 - 46
Chemical Engineering March 2019 - 47
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Chemical Engineering March 2019 - 76
Chemical Engineering March 2019 - Cover3
Chemical Engineering March 2019 - Cover4
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