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MAHARASHTRA NATURAL GAS LIMITED (MNGL)
TENDER DOCUMENT FOR
LAYING & CONSTRUCTION OF 10” NB x 175 METER & 4” NB x 25 METER UNDERGROUND STEEL PIPELINE NETWORK & ASSOCIATED WORKS IN PRAGATI INDUSTRIAL AREA, CHAKAN IN PUNE
UNDER LIMITED DOMESTIC COMPETITIVE BIDDING
Bid Document No.: MNGL/C&P/2017-18/136
VOLUME III OF III
A) GENERAL PIPELINE & MECHANICAL DRAWINGS
1. Typical Detail of SV Stations (type-I) - MNGL/Plng./Steel/01
2. Typical Detail of SV Stations (type-II) - MNGL/Plng./Steel/02
3. Trench cross section detail - MNGL/Plng./Steel/03
4. Barricading - MNGL/Plng./Steel/04
5. Cautions Board - MNGL/Plng./Steel/05
6. Typical Detail of Marker - MNGL/Plng./Steel/06
B) INSTRUMENTATION DRAWINGS
1. Installation Diagram for Pressure Gauge - MNGL/Plng./Steel/07
2. Installation Diagram for Temperature Gauge - MNGL/Plng./Steel/08
3. Mounting Details for Thermowells (T G) - MNGL/Plng./Steel/09
C) CP DRAWINGS
1. Prepacked Zinc Anode - MNGL/Plng./Steel/14
2. Magnesium Ribbon Anode for Grounding - MNGL/Plng./Steel/16
3. Test Station with Foundation Details - MNGL/Plng./Steel/18
4. Test Station Connection Schemes - MNGL/Plng./Steel/19
5. Galvanic Anode Installation - MNGL/Plng./Steel/21
6. Pipeline Grounding through Polarization Cell & Galvanic anode -
MNGL/Plng./Steel/23
7. Details of Zinc Grounding Cell - MNGL/Plng./Steel/24
8. Prepacked Permanent Ref. Electrode & Installation Type - MNGL/Plng./Steel/25
9. Test Station for Polarization Cell - MNGL/Plng./Steel/27
D) CIVIL WORKS DRAWINGS:
1. Std. detail of backfill for Drain Crossing - MNGL/Plng./Steel/29
2. Restoration of roads, footpath, channel - MNGL/Plng./Steel/30
E) TYPICAL DRAWINGS:
1. Vent & Drain for line 2” and above – MNGL/Plng./Steel/31
2. Wells installation 1.5” Taps - MNGL/Plng./Steel/32
3. Vent & Drain for line 1.5” & below - MNGL/Plng./Steel/33
4. Pressure Tapping - MNGL/Plng./Steel/34
5. Barred Tee - MNGL/Plng./Steel/38
6. Details of Chamber cover
7. Typical Piping in CNG Station
8. Typical drawing for Nalla / Culvert Crossing (Steel Pipe)
9. Typical drawing for Nalla / Culvert Crossing (PE Pipe)
10. Valve Assembly Drawing
11. DRS Foundation & Fencing Drawing
12. Earthing Pit Diagram for DRS / MRS
13. Protection of MDPE pipeline
14. Valve Pit details for MDPE Valves
15. General Arrangement Drawing for future tap-off points - MNGL/Plng./Steel/40
F) SURVEY DRAWINGS:
Alignment Sheets