Tender For Supply, Installation, Testing And Commissioning Of Field Instruments And Equipment For Upgradation Of Existing Pneumatic Control Loop, Sibsagar-Assam

Supply, Installation, Testing And Commissioning Of Field Instruments And Equipment For Upgradation Of Existing Pneumatic Control Loop ( Comprising Of Pt, Pic, Pcv, Etc. ) Into Analog 4-20 Ma Closed Loop Control System For Discharge Pressure Control Valves And Suction Pressure Control Valves Of Gas Compressor Units At Lakwa Thermal Power Station, Maibella ( Ltps ) , Suffry-785689, Dist. Charaideo, Assam.- 1 Analog Pressure Transmitter: Technical Requirement:• Loop Powered, 4-20 Ma Output. Range: 0-20Kg / Cm2, Span Adjustable.• Flame Proof Enclosure: Type “D” ( Ex D ) For Class I Division 1 Zone 0 Operation. 2 Multiple Loops Controller:Technical Requirement:• Ai 4-20 Ma, Ao 4-20 Ma With Local User Interface And Mounting Panel. 3 Redundant Power Supply:Technical Requirement: ( Input 220Vdc, Output 24Vdc, 10Amps ) Note: Individual Power Supply Module Must Be Capable Of Supplying Power To The Entire System.The Power Module Must Be Installed In One Working And One Standby Mode And Feature Of Automatic Load Transfer To The Standby Power Supply Module Must Be Available In Case The Power Supply Module In Service Becomes Faulty. Such Power Supply Switching Must Take Place Without Any Interruption Of The Controllers And Gas Compressors’ Operation. 4 Armoured Control Cable With Glands At Termination:Technical Requirement: • 4 Core, 2 Pair: • Laying Required From Control Room To Field Junction Box. 5 Armoured Control Cable With Glands At Termination: Technical Requirement:• 3 Core, 2 Pair: • Laying Required From Field Junction Box To Pressure Transmitter & Positioner. 6 Smart E / P Positioner With External I / P: ( For Operation In Natural Gas ) 7 New Mounting Brackets For The New Positioners Offered: 8 Flame Proof Junction Box With Terminal Block For Establishing Connections Between The Controllers, Pressure Transmitters And Positioners With Flame Proof Enclosure - Type “D” ( Ex D ) For Class I Division 1 Zone 0 Operation With Nema & Nec Type 3. 9 Delay Timer: Technical Requirement:• Time Delay: 0-10 Sec ( Adjustable ) . • Flame Proof Enclosure: Type “D” ( Ex D ) For Class I Division 1 Zone 0 Operation. 10 Solenoid Valve Having Flame Proof Enclosures - Type “D” ( Ex D ) For Class I Division 1 Zone 0 Operation. 11 Ss Tubes And Fittings Of Suitable Size For Connecting Pressure Transmitters, Positioners, Pressure Regulator With Moisture Drain, Pressure Control Valves, Etc. ( Required For 2 Nos. Of Gas Compressors Discharge Pcvs And 4 Nos. Of Suction Pcvs. ) 12 Pressure Regulator With Drain Facility: 13 Communication Cable From Controllers To The Desktop Pc Based Hmi, Rs485 / 232 Converters Etc.: 14 Hmi: Technical Requirement:• Desktop Pc Based To Control And Monitoring The Pressure Control Valves.• Monitor: 24 Inch, Full Hd Desktop Monitor, 75 Or Above Refresh Rate, 1920 X 1080 Pixels.• Processor: Intel Corei7, 13 Gen Intel Core Processor. System Type: 64 Bit Based Processor.• Installed Ram: 16 Gb.• Operating System Window 10 Pro.• Hmi Software Should Display And Supervisory Control The Following:I. 2Nd Stage Gas Discharge Pressure Of Gas Compressors And 1St Stage Gas Suction Pressures.Ii. Pressure Control Valve Opening / Close Position. Iii. Historical Trends Of All Hmi Data Should Be Stored For At Least 30 Days.Note: Pressure Control Valves Should Be Controlled From Pid Controller’S Manual And Auto Set Points As Well As From The Hmi Desktop Computer. 15 Panel For Mounting Controllers, Power Supply Modules, Mcb Breaker With Cooling Fan Etc. 16 Mcb With Suitable Amps Rating For Power Supply. 17 Instrument Earthing Kit For Earthing Of Controllers, Pressure Transmitters And Positioners. 18 2 Core Power Cable ( Armoured ) For Power Supply Of Controller: 19 Needle Valves 1 / 2: 20 Needle Valves 1 / 4 21 Service Charge Forerection, Installation, Testing & Commissioning Of Controllers, Equipment, Instruments Etc. For Successful And Corrected Operation Of The 06 Nos. Pressure Control Valves Of Ltps Using The New Supplied System. Integration Of All The Supplied Controllers Along With The Existing Controller Of Gas Compressor No. 6 Into A Single System, To Be Controlled And Monitored Using Desktop Pc Based Hmi. 22 P&F Charges Against Items Undersl. No. 1 To 20. 23 Freight Against Items Undersl. No. 1 To 20Note: Freight Bill To Be Submitted With Final Bill. 24 Transit Insurance Against Items Under Sl. No. 1 To 20Note: Insurance Bill To Be Submitted With Final Bill.

Sr No	CorrigendumDate	Corrignedum	CorrigendumType	NewSubmissionDate
1	02-Aug-2023	Tender Extension	Date	16-08-2023
2	16-Aug-2023	Extension of last date of bid submission	Date	28-08-2023
3	29-Aug-2023	3rd Extension of last date of bid submission	Date	07-09-2023
4	07-Sep-2023	4th tender extension	Date	21-09-2023

INR 1000 /-

INR 150000.0 /-

Refer document

Name of Work: Supply, Installation, Testing and Commissioning of field instruments and equipment for upgradation of existing pneumatic control loop (comprising of PT, PIC, PCV, etc.) into Analog 4-20 mA closed loop control system for Discharge Pressure Control Valves and Suction Pressure Control Valves of Gas Compressor Units at Lakwa Thermal Power Station, Maibella (LTPS), Suffry-785689, Dist. Charaideo, Assam.

Sl. No.	Item Description
1	Analog Pressure Transmitter: Technical Requirement: • Loop Powered, 4-20 mA output. Range: 0-20kg/cm2, span adjustable. • Flame proof Enclosure: Type “d” (Ex d) for Class I Division 1 Zone 0 operation.
2	Multiple Loops Controller: Technical Requirement: • AI 4-20 mA, AO 4-20 mA with local user interface and mounting panel.
3	Redundant Power Supply: Technical Requirement: (Input 220VDC, output 24VDC, 10Amps) Note: Individual power supply module must be capable of supplying power to the entire system. The power module must be installed in one working and one standby mode and feature of automatic load transfer to the standby power supply module must be available in case the power supply module in service becomes faulty. Such power supply switching must take place without any interruption of the Controllers and gas compressors’ operation.
4	Armoured Control Cable with glands at termination: Technical Requirement: • 4 core, 2 pair: • Laying required from control room to field junction box.
5	Armoured Control Cable with glands at termination: Technical Requirement: • 3 core, 2 pair: • Laying required from field junction box to Pressure Transmitter & Positioner.
6	Smart E/P Positioner with external I/P: (For operation in Natural Gas)
7	New mounting Brackets for the new positioners offered:
8	Flame proof junction box with terminal block for establishing connections between the Controllers, Pressure Transmitters and Positioners with Flame Proof Enclosure - Type “d” (Ex d) for Class I Division 1 Zone 0 operation with NEMA & NEC TYPE 3.
9	Delay Timer: Technical Requirement: • Time Delay: 0-10 sec (adjustable). • Flame Proof Enclosure: Type “d”(Ex d) for Class I division 1 Zone 0 operation.
10	Solenoid Valve having Flame Proof Enclosures - Type “d”(Ex d) for Class I Division 1 Zone 0 operation.
11	SS tubes and fittings of suitable size for connecting Pressure transmitters, Positioners, Pressure Regulator with moisture drain, Pressure Control Valves, etc. (Required for 2 nos. of Gas Compressors Discharge PCVs and 4 nos. of Suction PCVs.)
12	Pressure Regulator with drain facility:
13	Communication Cable from Controllers to the Desktop PC based HMI, RS485/232 converters etc.:
14	HMI: Technical Requirement: • Desktop PC based to control and monitoring the Pressure Control Valves.• Monitor: 24 inch, Full HD desktop monitor, 75 or above refresh rate,1920 x 1080 pixels.• Processor: Intel corei7,13 Gen intel core processor. System type: 64 bit based processor. • Installed RAM: 16 GB. • Operating system Window 10 Pro. • HMI software should display and supervisory control the following: i. 2nd stage gas discharge pressure of gas compressors and 1st stage gas suction pressures. ii. Pressure control valve opening/close position. iii. Historical trends of all HMI data should be stored for at least 30 days. Note: Pressure Control Valves should be controlled from PID Controller’s manual and auto set points as well as from the HMI desktop computer.
15	Panel for mounting controllers, power supply modules, MCB breaker with cooling fan etc.
16	MCB with suitable amps rating for power supply.
17	Instrument Earthing Kit for earthing of Controllers, Pressure Transmitters and Positioners.
18	2 core Power cable (Armoured) for power supply of Controller:
19	Needle valves 1/2":
20	Needle valves 1/4"
21	Service Charge forErection, Installation, Testing & Commissioning of Controllers, equipment, instruments etc. for successful and corrected operation of the 06 nos. pressure control valves of LTPS using the new supplied system. Integration of all the supplied controllers along with the existing controller of Gas Compressor no. 6 into a single system, to be controlled and monitored using Desktop PC based HMI.
22	P&F Charges against Items underSl. No. 1 to 20.
23	Freight against Items underSl. No. 1 to 20 Note: Freight bill to be submitted with final bill.
24	Transit Insurance against items under Sl. No. 1 to 20 Note: Insurance bill to be submitted with final bill.