Esri GeoConX 2016 White Paper Presentation by TJ Houle of UDC Inc. and Jesse Jennings and Angela Reising of Pacific Gas & Electric. Pacific Gas and Electric and UDC Inc. have partnered to develop a method to manage Gas Pressure Systems data in ArcGIS. Their solution provides tools for editing, monitoring, and updating Gas Pressure Systems and allows engineers to review these systems for completeness in an easy to use web viewer. This presentation is an overview of the Gas Pressure System management process.

1. Managing Gas Pressure
Systems in ArcGIS

2. PG&E Overview
• Incorporated
in
California
in
1905
• Serves
about
15
million
people
throughout
a
70,000
square-­‐mile
service
area
• More
than
42,000
miles
of
gas
distribution
pipeline
• 4.3
million
natural
gas
customer
accounts

3. Gas Pressure Systems at PG&E
Historically:
• Also
known
as
Hydraulically
Independent
Systems
(HIS)
• Managed
through
Synergi (Synergee)
modeling
software
• Gas
Pressure
Systems
were
not
modeled
in
GIS
-­‐ why
bother
migrating?

4. Business Problem
How
do
we
store
the
information
about
the
Gas
Pressure
System?
• Gas
Pressure
System
information
is
loaded
into
a
table
in
GD
GIS

5. Business Problem
How
do
we
define
the
boundaries
of
the
Gas
Pressure
System
on
the
map?
• The
Regulator
Station
has
an
attribute
that
contains
the
Gas
Pressure
System
name
• The
first
segment
of
Distribution
Main
out
of
the
Regulator
Station
is
identified
through
an
attribute

6. Business Problem
How
do
we
make
sure
the
Gas
Pressure
System
is
correctly
configured?
• Manually
-­‐ the
user
can
choose
to
validate
the
trace
using
the
core
tools
• Background
Process

7. Automated QA/QC
Automated
Checks
• The
system
runs
a
process
on
a
nightly
basis
to
trace
designated
Gas
Pressure
System
Systems
• If
the
trace
completes
successfully,
the
system:
• Calculates
the
total
length
of
Distribution
Main
• Populates
the
Gas
Pressure
System
Name
on
the
participating
Main
and
Service

8. Automated QA/QC
• The
system
automatically
checks
for
the
following
conditions:
• Increase
in
Gas
Pressure
System
size
• Decrease
in
Gas
Pressure
System
size
• No
related
Regulator
Station
• If
the
trace
encounters
features
associated
with
another
Gas
Pressure
System
• The
system
will
populate
the
Review
Status
field
when
the
automated
process
is
completed

9. Review Process
• The
system
sends
a
nightly
email
summarizing
any
Gas
Pressure
Systems
that
need
review

10. Technical Specifications
• Windows
Service
written
in
ArcObjects
• Multi-­‐process
• Utilize
CPUs
on
machine
• Uses
core
ArcFM trace
functions
• Consistent
with
the
trace
functions
in
ArcMap
• Easy
upgrade
path
to
Facility
Network
• Regenerates
on
different
conditions
• Regenerate
attribute
• Previously
determined
schedule
(configurable)
• Updates
made
once
per
day
• Staging
table
holds
all
updates
to
be
made
• Updates
made
during
downtime
to
minimize
conflicts/impact

11. Deploying Across the Enterprise
Desktop,
Web
and
Mobile
Search
for
a
Gas
Pressure
System

12. Deploying Across the Enterprise
3
layers
• Service,
Distribution
Main,
Distribution
Main
(Large
Scale)
• Colors
are
manually
set

13. Deploying Across the Enterprise
• Joined
Main/Service
feature
classes
to
GasPressureSystem table

14. Realized User Benefits
• Accessibility – Allows
anyone
with
access
to
the
GD
GIS
Web
Viewer
to
see
Gas
Pressure
Systems
• Increased
Awareness
– Expanded
the
ability
to
review
and
understand
of
Gas
Pressure
Systems
to
all
GD
GIS
users
• Issue
Identification
– Provided
insight
into
the
current
configuration
of
Gas
Pressure
Systems
and
Identified
several
opportunities
for
improvement
in
the
current
process
• Integration – The
application
is
designed
to
be
expandable,
and
should
allow
us
to
move
Cathodic
Protection,
Emergency
Zone
Management,
and
Leak
Survey
to
a
similar
model