Transcript Vibration Monitoring Instrumentation

ULTRA ENVIRO-SYSTEMS (P)
LTD.
New Delhi
Vibration Monitoring Instrumentation & Field Practices
ULTRA ENVIRO-SYSTEMS (P) LTD.
Visionary and founder Late Shyam Sunder Sharma started Globe
Agencies in 1969 to Sell Support and Service high
technological instrumentation in Mining, Atmospheric and
Earth Sciences.
We have maintained over the years “High Quality Personalized
Sales & After Sales Services to our customers”.
We work in close coordination with customers and our foreign
collaborators and principals to offer technological instruments
and systems best suited to Indian conditions.
We also offer total Indian Solutions using Local Contents, Layouts
and Hardware.
Scientific Rock Blasting means breaking rock using controlled
explosive energy in meaningful sizes suitable to the deployed plant &
machinery.
* Rock Blasting is a fine blend
of Science & Art
* Blaster
Artistic Kit
is designed to promote:
a) Enviro-friendly Blasting
b) Quality & Blast optimization
c) Blast Data Management
Overview of the Presentation
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Why use a Vibration Monitor
Vibration Terminology
Configuring your Seismograph
Placement of your Geophone and Microphone
Different type of sensors
Understanding a Seismograph report
Control Blasting Techniques
Why use a Vibration Monitor “Seismograph”
• Document Compliance with established
vibration guidelines
• Protect Structures
• Minimize risk of damage or annoyance
• Protect yourself against claims and lawsuits
• Control Blasting and Optimizing Blast using
Vibration Record
Vibration Terminology
• Geophone
- The sensor for measuring ground vibrations
• Microphone
- Sensor used for measuring air blast
• Peak Particle Velocity (PPV):
- Maximum velocity over the record time on each channel measured in
mm/sec
• Air Overpressure
- Air pressure wave resulting from the blast is reported in dB(L) for linear
or dB(A) weight
• Peak Sound Pressure Level Velocity (PSPL):
- Maximum Air over pressure the record time on Microphone channel in
dB(L) as unit of noise.
Configure the Seismograph
Select your Instantel® Monitor:
Blastmate III™ Seismograph
ISEE Linear, A-Weight, or
High Pressure Microphone
with windscreen
Water and shock resistant
carrying case
Sectional Microphone Stand
Storage for sensors,
microphone stand, geophone
spikes and accessories
Monitor interface:
Keypad and LCD
Integrated Thermal Printer
ISEE or DIN Geophone or
other supported Sensor (e.g.
Hydrophone, Low/High Level
Geophones, Accelerometers)
Auxiliary
Remote Alarm
Modem
Breakout Box
Wire Trigger
Connectors:
Power
Geophone
120 VAC
International VAC
12 VDC Battery
Car Adaptor
Solar Panel
ISEE or DIN
Accelerometer
High/Low Level Geo
Borehole Geo
Hydrophone
Microphone
ISEE
A-Weight
High Pressure
Why Point the arrow towards the blast?
8 Channel Minimate Plus Monitor
Minimate Pro™ Key Features
Smart Sensor Detection with
color coded connectors and
matching labels
Easy-to-read, 240x60, backlit
interface display
Expansive Memory and
Digital Signal Processing
Power
RF and EMI Shielding
120 VAC
12 VDC Input
12 VDC Battery
Car Adaptor
Solar Panel
Auxiliry
Remote Alarm
Modem
Wire Trigger
Ethernet Interface
ISEE or DIN Geophone
Water Resistant to IP67
Rugged Design – Cast
Aluminum Case
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Recording Types
• Full Waveform (Single shot, continuous, manual)
• Histogram (Histogram)
NOTE: Histogram Combo™ consist of both types of recording.
Recording Types (continued)
Histogram Combo™
• Combined bar chart and
waveform recording mode
• Record bar chart with 2
sec to 15 min intervals
• Record waveform when
trigger level is exceeded
• Graphical monitor log
• Capture and identify
anomalies
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Recording Types (continued)
Histogram Combo™
• Combined bar chart and
waveform recording mode
• Record bar chart with 2
sec to 15 min intervals
• Record waveform when
trigger level is exceeded
• Graphical monitor log
• Capture and identify
anomalies
Configure the Seismograph
Step 1: Select the Record Mode
• Available Record Mode selections:
– Single-Shot
– Continuous
– Manual
– Histogram
– Histogram Combo
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Configure the Seismograph
Step 2: Select the Sample Rate
• Available Sample Rates include 1024, 2048 and 4096
 With the a Standard Geophone ISEE, a Sample Rate of 1024
samples per second is more than sufficient.
 With the a Standard Geophone DIN, a Sample Rate of 2048
samples per second is more than sufficient.
• In Storage Mode, ensure that the monitor is set to Save
All Data
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Configure the Seismograph
Step 2: Select the Sample Rate
• Available Sample Rates include 1024, 2048 and 4096
 With the a Standard Geophone ISEE, a Sample Rate of 1024
samples per second is more than sufficient.
 With the a Standard Geophone DIN, a Sample Rate of 2048
samples per second is more than sufficient.
• In Storage Mode, ensure that the monitor is set to
Save All Data
Step 3: Set the Maximum Geophone Range
254 mm/s or 31.7 mm/s
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Configure the Seismograph
Step 4: Select the Trigger Source
Geo/Microphone/Geophone /Microphone
Step 5: Select the Trigger Level
Generally a level of <2 mm/s is sufficient for rock
blasting/ construction vibration
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Configure the Seismograph
Step 6: Set the Record Time (continued)
 NOTE: Add the blast duration plus 1 second of Record Time
for every 335 m (1100 ft.) between the seismograph and the
blast, otherwise you may cut off the recorded event, like the
sample shown below:
Configure the Seismograph
Step 7: Option Notes
Select the Option Notes key to enter site information.
NOTE: These are text fields that will appear in the
Event Report if populated.
Location
Client
User name
General
Extended Notes
Job Number
Step 9: Adjust Special Setups
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Timer Mode:
Select Daily or Off
Daily Self Check: This will enter a line in the Monitor Log, telling the user that the
monitor was functioning properly on the specified date
Sensor Check: Select Before, After or Disable to determine if and when a Sensor
Check will be performed. The results will appear on the Event Report
Units of Measurements: Set the units to either Imperial or Metric
Step 10: Set Time and Date
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Placement of Geophone
by Spiking and Burial
Right
Wrong
Placement of Geophone
by Bolting or Attachment
Right
Wrong
Placement of Geophone by Sandbagging
and Microphone Faces Blast
Right
5 Kg
Wrong
Remote Monitoring
Need to gather data from your site – not looking forward to the two-hour roundtrip? Is your job site
hard-to-reach? Or maybe the event results need to be forwarded to several customers, clients or
regulatory agencies simultaneously. The solution may be to establish a permanent or semipermanent monitoring station that can be downloaded using telemetry.
Instantel provides the features you need to quickly and easily set up remote monitoring stations
and networks. The Instantel® Auto Call Home™ automated call-in feature, allows remote access to
your monitor and data. Whenever an event occurs, the monitor automatically places a call to your
PC and downloads event data into one central location on your hard disk drive.
Communication can be established using telephone, cellular, GSM or satellite modem connections.
Once the files are on your computer, Instantel Blastware™ software enables automatic distribution
of data to a wide variety of devices, such as cellular phones, pagers, PDA’s and PCs. You create
"accounts" that specify what information will be sent to which recipients the entire event file, or
selected data for each channel. You can also send different information to different recipients, or
choose to time-delay distribution.
Auto Call Home™
feature
Packaging
No
Yes
Yes
Compact
Compact
Standard
Control Blasting with Scaled Distance Analysis
R egres s ion Line F or SETH IA.SD F
80% Line Equation: V = 606 * (SD )^(-1.72)
C oef f ic ient of D eterm ination = 0.856 Standard D ev iation = 0.0560
Peak Particle Velocity (mm/s)
100
10
1
1
10
Square R oot Sc aled D is tanc e (m /k g^1/2)
100
Why Calibration is Important
Calibration is important to ensure the instrument is
performing as per designed specification.
Although seismographs are designed to be used in a rugged
environment, they are still a sophisticated electronic
monitoring device. Therefore, preventative maintenance
becomes an important part of the annual calibration process.
Calibrated vibration instrument can prevent legal litigations.
Different type of sensor
Event
Report
FFT
Report
Govt. of India Ministry of Labour &
Employment Mines Safety Vibration
Standards
Type of structures
Dominant excitation frequency, Hz
< 8Hz
8-25Hz
(A) Buildings/structures not belong to the owner readings in mm/s
1. Domestic
5
10
houses/structures
Kuchcha, bricks &
Cement
2. Industrial building
10
20
3. Objects of historical
importance & sensitive
2
5
Structures
(B) Buildings belonging to the owner with limited span of life reading in mm/s
1. Domestic
houses/structures
2. Industrial buildings
>25Hz
15
25
10
10
15
20
15
25
50
Thanks for your attention
JAGDEEPAK SHARMA
CHIEF EXECUTIVE
ULTRA ENVIRO-SYSTEMS (P) LTD
HS-6 KAILASH COLONY MARKET
NEW DELHI-110048 INDIA
PHONES: 91-11 29245904
FAX: 91-11 41731084
Contact: jagdeepak @ultraenviro.com
CELL: 098 100 20196 Web: www.ultraenviro.com