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| Tender ID | 3677625 |
|---|---|
| Organisation Name | Military Engineer Services |
| Tender Brief | Corrigendum : Overhauling And Maintenance Of Main Sea And Dock Flooding 1200mm And 1800mm Dia Butterfly Valve (bfv) Along Gear Box With Extension Mechanism With Connected Accessories For Bfv No 2a 3b 4b 5b 1b And 2b For North Drydock (ndd) Pump House Drydocks Nava |
| Last Date For Submission | 15th Apr, 2026 |
| Opening Date | 17 Apr, 2026 |
| Document Cost | 1000.00 |
|---|---|
| EMD | 175160.00 |
| Estimated Cost | 10016000.00 |
| City | Visakhapatnam |
|---|---|
| State | Andhra Pradesh |
| # | Item | Qty | Units |
|---|---|---|---|
| 1 | Material & labour for PCC (1:2:4), type B1 (using 20 mm graded stone aggregate) as in pillar to support the pipe lines including necessary form work and finishing the exposed surfaces of concrete fair and even all as specified and directed | 10.00 | CuM |
| 2 | Comprehensive Overhauling an Maintenance of 1200mm & 1800mm dia BFV valve along with with extension rod-gear mechanism all as specified and directed. The unit rate quoted for Ser 2.00 should be considered with and including the following points mentioned below a) Lowering of existing blanking off plate (BOP) on sea side Butter-fly valves (BFV-1&2) in its position.(Note: Yard will provide BOPs and technical support for operating BOP. Firm shall employ divers for cocking to ensure water tight integrity from sea side and other misc. works). b) Open the valve and check for sea water ingress from other side of the valve to ensure water tight integrity of BOP. c) Cocking between BOP and its frustum from sea side by divers to arrest the ingress of sea water if any. d) Ensure the watertight integrity at all times during execution of the job | 8.00 | Each Job |
| 3 | e) Disconnect the valve operating mechanism (gear box with extension rod) and overhaul/ repair of its components properly. f) Disconnect the dismantling joint and remove from its position and place in secure place.(if rubber seal/ connecting seal joint damaged during removal, replace with new one on assesmbling period) g) Disconnect and remove the Butter-Fly Valve from pipe line. h) Check the condition of shaft if required, fine tune by machining make key way slots for any modification (replace shaft if damaged/warnout) j) check the condition of dowel pins on disc if warnout replace with new one set. k) Water tight seals and O rings to be repalce mandatory where ever necessary. m) Replace the warnout bushes and sleeves. n) Replace valve internal fasteners as to mandatory. p) Check the valve body issue make modifiuaction/machining/cutting /welding/ and fit the valve disc properly inside body. | ||
| 4 | q) Supply and fix to valve body Non return stopper of SS Stopoper support frame with one manual adjustment bolt with double nut to avoid over closing of valve disc. r) Check the condition of bearing and replace. s) Mandatory to replace the valve disc seal EPDM material with disc cover and SS fasteners t) Repalace any worn/ damaged seals, o-rings, fasteners, sleeves, bearings, bushes, etc. spares additionally required to make operational is mandatory supply and provide without additional cost as suggested and directed to by Engineer In-Charge u) If the disc seal itself significantly worn, consider replace it. v) Clean all components with suitable solvents, to remove debris and contaminents. | ||
| 5 | Overhauling/ maintenance of Gear Box butterfly valve as follows: a) Inspect the Gear and gear-shaft and do the requisite maintenance with suitable solvents and founnd any damaged parts, to be replaced with new items. b) Water tight seals and O-rings to be repalced mandatory. c) Replace warnout bushes and bearings if necessary. d) Replace the gear box stopper bolts with SS fasteners. e) Replace the valve indicator cover with new visual marking of of 1/8th, 1/4th, 1/2, 3/4th and full Open ,full close postions to be embosed with brass plate on Gear-Box cover with the supervision of user department. f)Required Nut,bolt fasteren etc to be included in the overhauling. | 8.00 | Each Job |
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