National Hydroelectric Power Corporation Limited has published Exploration And Collection Of Core For 03 Nos . Exploratory Core Drilling Holes By Triple-Tube Core Method At Intake Area In Barrage Of Teesta Vi Hep , Serwani . . Submission Date for this Tender is 15-05-2020. Core Drilling Tenders in Teesta-V Power Station, NHPC Ltd., Balutar, East S Sikkim. Bidders can get complete Tender details and download the document.
| Name of Work : Exploration & Collection of Core for 03 nos. exploratory Core drilling holes by Triple-Tube Core Method at Intake Area in Barrage of Teesta VI HEP, Serwani. | |||||
|---|---|---|---|---|---|
| Sl. No. | Item Description | Item Code / Make | Quantity | Units | |
| 1 | 1 | Exploratory core drilling by Triple- tube core barrel Method Sx(150mm)/Px/Hx/Nx size hole in all kind of overburden soil formation upto a maximum depth of 25m or up to refusal, whichever is encounter earlier including collection of undisturbed samples from cohesive soils only as per relevant IS Code | Make 1 | 75 | M |
| 2 | 2 | Exploratory core drilling by Triple-tube core barrel method Hx/Nx/Bx size hole in refusal strata/Rock formation up to a maximum depth of 50m as per relevant IS Code \n(a)Ground level to 50m | Make 2 | 75 | M |
| 3 | 3 | Carry out in-situ permeability test in overburden soil formation at 1.50m interval by constant head / falling head method as deemed suitable at site as per IS 5529 Part-I | Make 3 | 50 | Nos. |
| 4 | 4 | Carry out in-situ permeability test in rock formation at 3m interval by constant head/falling head method as deemed suitable at site as per IS 5529 Part-II | Make 4 | 25 | Nos. |
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