Presentation on theme: "Vibration Monitoring Instrumentation & Field Practices"— Presentation transcript:
1Vibration Monitoring Instrumentation & Field Practices ULTRA ENVIRO-SYSTEMS (P) LTD.New DelhiVibration Monitoring Instrumentation & Field Practices
2ULTRA 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 blendof Science & Art* Blaster Artistic Kitis designed to promote:a) Enviro-friendly Blastingb) Quality & Blast optimization c) Blast Data Management
4Overview of the Presentation Why use a Vibration MonitorVibration TerminologyConfiguring your SeismographPlacement of your Geophone and MicrophoneDifferent type of sensorsUnderstanding a Seismograph reportControl Blasting Techniques
5Why use a Vibration Monitor “Seismograph” Document Compliance with established vibration guidelinesProtect StructuresMinimize risk of damage or annoyanceProtect yourself against claims and lawsuitsControl Blasting and Optimizing Blast using Vibration Record
6Vibration Terminology Geophone- The sensor for measuring ground vibrationsMicrophone- Sensor used for measuring air blastPeak Particle Velocity (PPV):- Maximum velocity over the record time on each channel measured in mm/secAir Overpressure- Air pressure wave resulting from the blast is reported in dB(L) for linear or dB(A) weightPeak Sound Pressure Level Velocity (PSPL):- Maximum Air over pressure the record time on Microphone channel in dB(L) as unit of noise.
7Configure the Seismograph Select your Instantel® Monitor:
8Blastmate III™ Seismograph ISEE Linear, A-Weight, or High Pressure Microphone with windscreenWater and shock resistant carrying caseSectional Microphone StandStorage for sensors, microphone stand, geophone spikes and accessoriesMonitor interface: Keypad and LCDIntegrated Thermal PrinterISEE or DIN Geophone or other supported Sensor (e.g. Hydrophone, Low/High Level Geophones, Accelerometers)Connectors: Auxiliary Power Geophone MicrophoneRemote Alarm Modem Breakout Box Wire Trigger120 VAC International VAC 12 VDC Battery Car Adaptor Solar PanelISEE or DIN Accelerometer High/Low Level Geo Borehole Geo HydrophoneISEE A-Weight High Pressure
11Minimate Pro™ Key Features Easy-to-read, 240x60, backlit interface displayExpansive Memory and Digital Signal ProcessingSmart Sensor Detection with color coded connectors and matching labelsPowerRF and EMI Shielding120 VAC 12 VDC Input 12 VDC Battery Car Adaptor Solar PanelAuxiliryRemote Alarm Modem Wire Trigger Ethernet InterfaceISEE or DIN GeophoneRugged Design – Cast Aluminum CaseWater Resistant to IP6711
12Recording 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 spsHistogram, barchart or interval analysis are NOT recommended for blast monitoring.Keeps one sample over an entire interval. 1 point every 2 seconds.
13Recording Types (continued) Histogram Combo™ Combined bar chart and waveform recording modeRecord bar chart with 2 sec to 15 min intervalsRecord waveform when trigger level is exceededGraphical monitor logCapture and identify anomalies
14Recording Types (continued) Histogram Combo™ Combined bar chart and waveform recording modeRecord bar chart with 2 sec to 15 min intervalsRecord waveform when trigger level is exceededGraphical monitor logCapture and identify anomalies
15Configure the Seismograph Step 1: Select the Record ModeAvailable Record Mode selections:Single-ShotContinuousManualHistogramHistogram Combo
16Configure the Seismograph Step 2: Select the Sample RateAvailable Sample Rates include 1024, 2048 and 4096With 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 DataIn 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)
17Configure the Seismograph Step 2: Select the Sample RateAvailable Sample Rates include 1024, 2048 and 4096With 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 DataStep 3: Set the Maximum Geophone Range254 mm/s or 31.7 mm/s
18Configure the Seismograph Step 4: Select the Trigger SourceGeo/Microphone/Geophone /MicrophoneStep 5: Select the Trigger LevelGenerally a level of <2 mm/s is sufficient for rock blasting/ construction vibration
19Configure 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.
20Configure the Seismograph Step 7: Option NotesSelect the Option Notes key to enter site information.NOTE: These are text fields that will appear in the Event Report if populated.LocationClientUser nameGeneralExtended NotesJob NumberStep 9: Adjust Special SetupsTimer Mode: Select Daily or OffDaily Self Check: This will enter a line in the Monitor Log, telling the user that the monitor was functioning properly on the specified dateSensor Check: Select Before, After or Disable to determine if and when a Sensor Check will be performed. The results will appear on the Event ReportUnits of Measurements: Set the units to either Imperial or MetricStep 10: Set Time and Date
21Placement of Geophone by Spiking and Burial Right WrongThe preferred burial method is excavating a hole that is no less than three times the height of the sensorspiking the sensor to the bottom of the hole, and firmly compacting soil around and over the sensor.Burial should be done in undisturbed soil.
22Placement of Geophone by Bolting or Attachment Right WrongThe sensor can be bolted, clamped or glued to the rock surface.Make sure the sensor is level and in solid contact with the rock.
23Placement of Geophone by Sandbagging and Microphone Faces Blast Right Wrong5 KgDid not record long enough and cut off the air overpressure.
24Remote Monitoring Auto Call Home™ feature No Yes Packaging Compact Remote MonitoringNeed 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™ featureNoYesPackagingCompactStandard
26Calibrated vibration instrument can prevent legal litigations. Why Calibration is ImportantCalibration 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.
32Govt. of India Ministry of Labour & Employment Mines Safety Vibration Standards Type of structuresDominant excitation frequency, Hz< 8Hz8-25Hz>25Hz(A) Buildings/structures not belong to the owner readings in mm/s1. Domestic houses/structuresKuchcha, bricks & CementIndustrial building3. Objects of historical importance & sensitiveStructures5102201525(B) Buildings belonging to the owner with limited span of life reading in mm/s2. Industrial buildings50
33Thanks 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: