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

Trench Details (Drawing No. MNGL/Plng/Steel/03)

Drawing No. MNGL/Plng./Steel/04

Details of Chamber Cover

Typical Piping in CNG stations

Typical Drawing for Nallah / Culvert crossing (STEEL PIPELINE)

Typical Drawing for Nallah / Culvert Crossings (PE PIPELINES)

Valve Assembly Drawings

DRS Foundation and Fencing Drawings

DRS Fencing

Protection to MDPE pipelines

Valve pit details for MDPE Valves

Valve pit details for MDPE Valves Contd.