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Vibration Monitoring Instrumentation & Field Practices

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1 Vibration Monitoring Instrumentation & Field Practices
ULTRA ENVIRO-SYSTEMS (P) LTD. New Delhi Vibration Monitoring Instrumentation & Field Practices

2 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.

3 * Blaster Artistic Kit * Rock Blasting is a fine blend
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

4 Overview of the Presentation
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

5 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

6 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.

7 Configure the Seismograph
Select your Instantel® Monitor:

8 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) Connectors: Auxiliary Power Geophone Microphone Remote Alarm Modem Breakout Box Wire Trigger 120 VAC International VAC 12 VDC Battery Car Adaptor Solar Panel ISEE or DIN Accelerometer High/Low Level Geo Borehole Geo Hydrophone ISEE A-Weight High Pressure

9 Why Point the arrow towards the blast?

10 8 Channel Minimate Plus Monitor

11 Minimate Pro™ Key Features
Easy-to-read, 240x60, backlit interface display Expansive Memory and Digital Signal Processing Smart Sensor Detection with color coded connectors and matching labels 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 Rugged Design – Cast Aluminum Case Water Resistant to IP67 11

12 Recording Types Full Waveform (Single shot, continuous, manual)
Histogram (Histogram) NOTE: Histogram Combo™ consist of both types of recording. Make sure to select the proper recording mode. Full wave form sample rate should be high enough to accurately reproduce the vibration data generally 1000 sps Histogram, barchart or interval analysis are NOT recommended for blast monitoring. Keeps one sample over an entire interval. 1 point every 2 seconds.

13 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

14 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

15 Configure the Seismograph
Step 1: Select the Record Mode Available Record Mode selections: Single-Shot Continuous Manual Histogram Histogram Combo

16 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 In continuous record mode, the Blastmate II records multiple events until you stop monitoring or the monitor runs out of memory. Providing a detailed waveform plot. (most useful)

17 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

18 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

19 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: Did not record long enough and cut off the air overpressure.

20 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 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

21 Placement of Geophone by Spiking and Burial
Right Wrong The preferred burial method is excavating a hole that is no less than three times the height of the sensor spiking the sensor to the bottom of the hole, and firmly compacting soil around and over the sensor. Burial should be done in undisturbed soil.

22 Placement of Geophone by Bolting or Attachment
Right Wrong The sensor can be bolted, clamped or glued to the rock surface. Make sure the sensor is level and in solid contact with the rock.

23 Placement of Geophone by Sandbagging and Microphone Faces Blast
Right Wrong 5 Kg Did not record long enough and cut off the air overpressure.

24 Remote Monitoring Auto Call Home™ feature No Yes Packaging Compact
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 semi-permanent 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 No Yes Packaging Compact Standard

25 Control Blasting with Scaled Distance Analysis

26 Calibrated vibration instrument can prevent legal litigations.
 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.

27 Different type of sensor

28 Event Report

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31 FFT Report

32 Govt. of India Ministry of Labour & Employment Mines Safety Vibration Standards
Type of structures Dominant excitation frequency, Hz < 8Hz 8-25Hz >25Hz (A) Buildings/structures not belong to the owner readings in mm/s 1. Domestic houses/structures Kuchcha, bricks & Cement Industrial building 3. Objects of historical importance & sensitive Structures 5 10 2 20 15 25 (B) Buildings belonging to the owner with limited span of life reading in mm/s 2. Industrial buildings 50

33 Thanks for your attention
JAGDEEPAK SHARMA CHIEF EXECUTIVE ULTRA ENVIRO-SYSTEMS (P) LTD HS-6 KAILASH COLONY MARKET NEW DELHI INDIA PHONES: FAX: Contact: CELL:   Web:

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