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Welcome to TNEB ENGINEER"S ASSOCIATION..Web Portal......"All the members are requested to upload their Name, personal address, contact Number, so as to deliver MINTHIRAN at your door step" "All the Executive committee members and Branch secretaries are requested to extend your cooperation for uploading your CV for sharing of TNEBEA activities then and there " To enrich the content of Minthiran, kindly upload your valuable technical artical, Issues to be addressed to Management, Practical and implementable ideas and thoughts to raise the organisation dignity, Advertisement oriented towards Electrical Utility, etc"
Name:R.Ravikumar
Desination:Executive Engineer
Work Place:
Query:Thank you for for the speedy reply to my quarries
Answer:


Name:R.Ravikumar
Desination:Executive Engineer
Work Place:CWS/ETPS/Chennai
Query:Vibration limits with respect to speed & height of Vertical mounted pumps is required
Answer:VIBRATION FOR VERTICAL MOUNTED PUMPS Vertically mounted pump systems with a "Vertical Mount Height" greater than 5 feet will have an allowable increase in Velocity Amplitude Acceptance Limits in Bands 1, 2, and 3 of 5% per foot of "Vertical Mount Height" greater than 5 feet. (e.g. A 7 foot Vertical Mount Height would yield a 10% increase [(7 ft - 5 ft) x 5%/ft] Velocity Amplitude Acceptance Limits specified for Bands 1, 2, and 3. Therefore the limit for Band 1 would be [0.4 Inch/sec + (0.4 Inch/sec x 0.1)] = 0.44 Inch/sec-Peak. Vertical Mount Height is defined as the furthest measurable distance from the machine mounting to the end of the driver or the end of the pump, which ever is greater. Useful Links : For more reference http://www.usedvibration.com/Pump_Vibration_Alarm_Limits.htm Sir more related E-documents sent to your E-mail ID Sir...


Name:D.Subramania Pillai
Desination:Assistant Engineer
Work Place:Orathanadu
Query:which tariff is applicable for Mineral water plant of 5 HP Load & for 15 HP Load?
Answer:industrial tariff 3b irrespective of load


Name:K.B.Gomathe
Desination:Assistant Engineer
Work Place:MRT/Erode/Erode
Query:Sir Whether Board Contribution under CPS scheme is Taxable? details regarding this please.circular or rule number of Income tax department supporting this
Answer:Forwarded to Admin section.... Answer will be posted shortly....


Name:kevivs
Desination:Assistant Engineer
Work Place:ETPS
Query:why orifice meters are preferred for high pr lines? why not venturimeters?
Answer: the difference between venturi and orifice meters : 1. The orifice plate can easily be changed to accomodate widely different flow rates, whereas the throat diameter of a venturi is fixed, so that its range of flow rates is circumscribed by the practical limits of Dp. 2. The orifice meter has a large permanent loss of pressure because of the presence of eddies on the downstream side of the orifice-plate; the shape of the venturi meter prevents the formation os these eddies and greatly reduces the permanent loss. 3. The orifice is cheap and easy to install. The venturi meter is expensive, as it must be carefully proportioned and fabricated. A home made orifice is often entirely satisfactory, whereas a venturi meter is practically always purchased from an instrument dealer. 4. On the other hand, the head lost in the orifice for the same conditions as in the venturi is many times greater. The power lost is proportionally greater, and, when an orifice is inserted in a line carrying fluid continuously over long periods of time, the cost of the power may be out of all proportion to the saving in first cost. Orifices are therefore best used for testing purposes or other cases where the power lost is not a factor, as in steam lines. 5. However, in spite of considerations of power loss, orifices are widely used, partly because of their greater flexibility, because installing a new orifice plate with a different opening is a simpler matter. The venturi meter can not be so altered. Venturi meters are used only for permanent installations. 6. It should be noted that for a given pipe diameter and a given diameter of orifice opening or venturi throat, the reading of the venturi meter for a given velocity is to the reading of the orifice as (0.61/0.98)2, or 1:2.58.(i.e. orifice meter will show higher manometer reading for a given velocity than venturi meter). AN VENTURIMETER IS CONSISTING OF DIVERGENT&CONVERGENT PORTION IN THE INLET & OUTLET WHEREAS AN ORIFICE VENTURIMETER CONSISTING OF INLET&OUTLET TO BE SAME WITH CIRCULAR THROAT AT THE CENTER. THE DISCHARGE OF AN ORIFICEMETER IS ALWAYS HIGHER THAN THE VENTURIMETER. E-File sent to your Email - Id for further reference...


Name:M Senthil kumar
Desination:Assistant Engineer
Work Place:CDC
Query:Is there any sincere efforts to get pay commission? or Is these the efforts to cool the members of Engg. community?
Answer:


Name:INDIRANIK
Desination:Executive Engineer
Work Place:Erode
Query:Filing Any civil suit in the name of employee(pure personal case like land dispute etc) requires permission from BOARD????
Answer:no,if the property is not in the property return filed by the employee


Name:gunaselvam v
Desination:Executive Engineer
Work Place:ETPS
Query:Kinldy provide a write up of our SCADA to update our engineers working in various fields.
Answer: