System 1
Decision Support
Analytic forgas turbines

Gas turbines are used as prime movers for a variety of driven equipment including
compressors, pumps, electric generators, and others. Because these machine trains
are frequently critical to the process, understanding the health of the gas turbine
is fundamental to reliable, profitable, and emissions-compliant operations. This
analytic covers both industrial and aeroderivative gas turbines and is designed to automatically detect morethan 40 different problems and provide corresponding insights across the gas turbine and its subsystems.
This affords a truly holistic view of the gas turbine’s health and performance. When coupled with additional
analytics, the health of the entire machine train can be assessed.

Comprehensive yet scalable

Emissions

Blades/buckets

Rotor/
br
gs/s
e

ce
an
rm
fo
er

Pe

ur
os

st

En

clsy
m

e

subsystems

s
al

ir

insights

10pa
thta

42

Hot g
asI nl e

Decision Support Analytics are designed to use
whatever available data exists and scale the insights
they provide appropriately. For example, when only
process data is available, insights for the gas turbine’s
auxiliary systems such as lube, fuel, exhaust, andinlet filtration can be generated because they rely
exclusively on process data. Conversely, when only
static and dynamic vibration data is available, insights
relying exclusively on vibration data are provided,
but not those relying on process data. When both
vibration and process data are available, the mostcomprehensive level of insights are provided, covering
the full capabilities of the analytic. For this reason, users
are encouraged to ensure that process data is available
in System 1 through connection to the DCS, process
historian, or other control/automation platform using
the various open protocols and interfaces we support.

ystemoil sbeLuFu el syste mS urg

e /st all

Benefits• Eliminates tedious manual review of data to identify
problems for better use of personnel• Reduces the need for resident machinery expertise
at each site and/or travel to diagnose problems• Delivers 60+ years of embedded Bently Nevada
machinery diagnostics expertise• Allows the knowledge of your own experts to beembedded, retained, and disseminated• Ensures anomalies do not go unnoticed throughcontinuous and automated review of data
• Facilitates your own company processes andpractices in responding to machinery problems
through fully customizable notifications• Removes guesswork; first principles approachdelivers actionable information to operators andpersonnel rather than statistical probabilities andindeterminate results• Enables faster and easier commissioning because
the system does not require database “training” of
the AI engine via extensive historical data ingestion• Provides holistic asset coverage; not limited tovibration data and rotordynamic issues and instead
covers all major subsystems of the gas turbine,allowing greater confidence in O&M decisions• Supplies insights in minutes or less—not hours/days;
allows rapid intervention for incipient problems

Fast

Customizable

Actionable

Automated

RobustHolistic

ProvenCustomized insight saves anestimated €2.2M
An offshore platform without resident machineryor instrumentation expertise was experiencing
repeated trips of an aeroderivative gas turbine,necessitating costly inspections and production
disruptions representing 35 MBOE* per day. Root
cause was found to be intermittent noise fromhigh-temperature accelerometers mounted on
the machine. The extremely high g-levels on thecasing of many aeroderivatives due to blade
passage tends to result in a short lifespan for
accelerometers and cable connectors for eventhe most robust sensor systems. The System 1
Decision Support environment was used to examine
spectral components associated with the sensor
failure mode, thereby eliminating spurious trips byinstructing operators to bypass the sensor channel
when early signs of degradation began to appear,
until the offending sensor/cable could be replaced.
Operation was able to continue uninterrupted during
such events with the assurance that the turbine wasindeed mechanically sound. Each time this insightwas triggered, it eliminated an estimated €2.2M inlosses due to unnecessary mechanical inspection
and associated loss of production.

* Million Barrels of Oil EquivalentCapabilities

Mechanical insights

A holistic approach for the entire asset

Fluid-induced instability whirl/whip

I

General radial preloadIDecision Support Analytics embed a substantial
body of machinery and process expertise gainedby Bently Nevada over the last six decades. Throughmore than 15,000 machinery diagnostic projects indozens of industries, our field engineers perform thesame data review and analysis that is now containedin our analytics. We place this same Bently Nevada
intelligence right into your System 1 installation where
it can be extended to every asset in your operations,automatically and continuously.

High synchronous vibration

I

Rotor 1X runout

I

Sub-synchronous rub

I

Super-synchronous rub

I

Misalignment

I

Rotor bowI

Compressor near surge

IWe extract 75 different attributes from the data todeliver 42 powerful insights across the turbine and its
subsystems.

Compressor surge and stall

IHigh exhaust temperature

BHigh differential exhaust temperature

B

Blade pass

BCombustor rumble

B

Process insights

Rotors | Bearings | Seals | Blades | Buckets | Couplings

Bleed valve position control issue

B

Lube oil system | Cooling system | Performance

Inlet guide vane position control issue

B

Liquid fuel supply pressure low

BPossible combustor issue

B

IGVs | Inlet filters | Enclosure | Fuel system
Suge | Stall | Emissions

Turbine inner barrel cooling problem

B

Gas generator possible performance loss

APower turbine possible performance loss

A

Lube system insights

141297mechanicalinsights

2oo2 temp1 validity checkB

LO 2oo2 temp2 validity checkB

2oo3 header pressure validity check

B

Cooler oil leak

B

Cooler oil-side fouling

B

Cooling system problem

B

Heater problem

B

Filter clogging

B

Pump problem

B

Auxiliary system insights

auxilliary
insights

lube systeminsights

process
insights

Air filter system air filter rupture or blockage

BCombustor issue

BCompartment air temperature high and sensor failure

BCompressor Inlet air filter clogging/icing

B

Enclosure cooling issue

B

Flame detector failure

B

Gas fuel valve position control issue

B

Gas leak detection and sensor failure

B

Gas valve comp air temp high and sensor fault

B

Liquid fuel filter filter clogging

B

Liquid fuel filter position control issue

B

NOx control issue

B

A – Aeroderivative gas turbines only (rolling element bearings)
B – Both aeroderivative and industrial gas turbines
I – Industrial gas turbines only (fluid-film bearings)

Methodology

A proven method for robust, reliable decision support

System 1Decision Support Analytic

Configured
properties

Measurements

Extractions

Intelligence

Diagnostics

Notifications

Information about
the asset:

Information fromthe asset:

Extracted
calculations:Embedded subject
matter expertise:

Meaningfulconclusions:

Actionable guidance:• Design speed• Temperature• Orbit shape• Decision trees• Incipient surge• Inspect IGVs

• Rotation direction• Vibration frequency• Differential pressure• Physical andoperational limits• Clogged filter• Schedulecomp. wash

• Etc.

• Etc.

• Brg. clearances• Sensor orientation• Etc.

• Vibration amplitude• Flow• Etc.

• Eccentricity ratio• % of rated load
• Etc.

• Logic• Etc.

Decision Support Analytics use Bently Nevada’s proven diagnostic methodologythat combines configured properties with measurements to generate
extractions. It mimics the approach used by our own machinery diagnostic
experts to collect the available data from the asset and the process, and thenconvert it to useful parameters and ratios used in the analysis process. It thenapplies the same intelligence to these extractions that a human expert would
use to arrive at diagnostic findings. These findings can then be sent to relevant
personnel using System 1’s notification features.

Flexibility

Transparent and customizable
The intelligence we embed is fully accessible to you. No black boxes, no secretrecipes. Using Decision Support Developer, you can edit Decision Support
Analytics to meet specific goals. In addition, users may write custom extractions
and diagnostic rules to address asset needs which are not yet covered by ourinventory of analytics. In fact, Decision Support Developer is what we use tocreate our analytics. Decision Support Developer is a powerful way to capture
the accumulated experience and knowledge of your own experts, ensuring it
isn’t lost, and deploying it across your entire enterprise.

• Rub• Loss of efficiency• Reduce speed/load• Inspect filter

Decision SupportAnalytics are alsoavailable for:

Driven machinery

Specialty components• Pumps• Dry gas seals• Blowers/fans• Generators• Centrifugal/axial compressors• Integrally geared compressors• Reciprocating compressors

Prime movers

Power transmission• Gearboxes• Power turbines• Steam turbines• Electric motors

When the gas turbine analytic is coupled with analytics for its driven machinery (power transmission components such asgearboxes, specialty components such as dry gas seals, generators, etc.) end users will gain insights into the health of thefull machine train and identified subsystems. Bently Nevada continues to enhance Decision Support Analytics and expand
System 1’s analytics library to cover new machines and equipment types.

Complementary services
Decision Support Analytics deliver the best value when allparts of your condition monitoring ecosystem are workingproperly. Our service capabilities cover the entire spectrumof your needs and our global footprint ensures our expertiseis available wherever and whenever you need it.

• Installation and configuration

Customized Human Machine Interfaces (HMIs)

Customized insights

Looking for a clearer view of your operations?

While the Decision Support Developer’s capabilities allow you
to build and customize your own insights, many customers
turn to us for these services. We can tailor existing insights tothe specifics of your operations, or we can develop entirely
new insights—whether to augment the capabilities on an
existing asset or to address entirely new assets, both rotating
and fixed.

We can create fully customized diagnostic HMIs forindividual assets or even your entire plant. These HMIs allow
operators and others to quickly drill down to specific assets
and subsystems to understand the nature and severity ofproblems and the precise actions to take for mitigation.

Copyright 2022 Baker Hughes Company. This material contains one or more registeredtrademarks of Baker Hughes Company and its subsidiaries in one or more countries. All
third-party product and company names are trademarks of their respective holders.
BakerHughes_BN_DecisionSupport_Gas_Turbines_FS-090822• Training• System tuning and optimization• Supporting service agreements• Remote and onsite diagnostics

bently.com