Pre-bid Meeting Conversation


Pre-bid meeting Start Time ( 24/10/2019 14:30 )
Pre-bid meeting End Time ( 24/10/2019 15:30 )

Sr.no. User Comment
1 Deepali Patil / Manager (C) -FTP ( 24/10/2019 02:31 ) NPCIL welcomes all the bidders for the Pre-Bid meeting of the subject tender. Bidders can now ask their queries.
2 Deepali Patil / Manager (C) -FTP ( 24/10/2019 02:33 ) All bidders are requested to kindly note that the final replies to queries of all the bidders will be uploaded as Pre-bid response which only shall prevail and form the part of the subject Tender.
3 Deepali Patil / Manager (C) -FTP ( 24/10/2019 02:33 ) Bidders are hereby requested that while uploading documents for Part-I bids, attachments are to be uploaded only once either with a particular Online Bidding Form or under the Tab "Upload Techno-Commercial Documents".
4 Deepali Patil / Manager (C) -FTP ( 24/10/2019 02:34 ) Bidders attention is drawn to Clause No. 14 of SCC wherein details regarding Price Adjustment are given. In the Online Bidding Forms "Annexure-B 1.0" and "Annexure-B 2.0", only requisite details and confirmation is to be provided.
5 1. Walchandnagar industries Ltd ( 24/10/2019 02:34 ) 1)SECTION-C:6.0 Material and Workmanship:Please provide the list of NPCIL approved suppliers for pipe, plates, forgings, welding confumable etc. Also note that some of the raw material have to be procured from Stockist & test for propertise since the quantity of each type of material is very small.
6 2. Walchandnagar industries Ltd ( 24/10/2019 02:35 ) 2)Section `C' : Tech. Spec. - 33004/PC-E- 00066/R1:9.4 - Material:"Pressure parts raw material certification shall be as per EN 10204 type 3.1. We have to procure raw material from Stockist & test for propertices since the quantity of the material is small. Please confirm."
7 3. Walchandnagar industries Ltd ( 24/10/2019 02:35 ) 3)Section `C' : Tech. Spec. - 33004/PC-E- 00066/R1:6 - Material:The raw material requirements shall be as per the technical specifications provided along with the enquiry. For the material where particular specification is not provided, the same shal be considered as per ASME Sec. II A. Please confirm.
8 4. Walchandnagar industries Ltd ( 24/10/2019 02:35 ) 4)Section `C' : Tech. Spec. - 33004/PC-E- 00066/R1:7.5 - Painting:We understand that no painting is required for Inner surface of CS vessels. NPCIL to confirm.
9 5. Walchandnagar industries Ltd ( 24/10/2019 02:36 ) 5)Section `C' : Tech. Spec. - 33004/PC-E- 00066/R1:9.4 - Material:The para 9.4 states that "The pipes (SA 106 Gr. B) for nozzles of Pressuriser and both headers shall be subjected to Charpy V- Notch Impact test" whereas ASME sec. IIA, SA 106 Gr. B for pipes does call for impact tested. In view of this, requiredment of impact testing is not applicable for SA 106 Gr. B pipes. NPCIL to confirm.
10 6. Walchandnagar industries Ltd ( 24/10/2019 02:36 ) 6)Section `C' : NPCIL/33004/0501/DD Rev.1 & NPCIL/33004/0502/DD Rev.1:"Discharge Header Suction Header:"As per the drg, SF of ellipsoidal dish is 362.5mm. Please note that the Dish end manufacturer has expressed difficulty in forming dish with 362.5mm SF and hence, we propose to reduce SF meeting requirements of Note no. 8 of Fig. UW-13.1. Reduced length in SF will be accomodated in Shell length. Overall length of header will be maintained as required. NPCIL to confirm.
11 7. Walchandnagar industries Ltd ( 24/10/2019 02:36 ) 7)Section `C' : NPCIL/33004/0503/DD Rev.1:DMST Water storage tank:Required blank dia of dish end is around 3200mm. Due to non availability of plate having width of 3200mm, we propose to make dish end by welding two plates at plate stage and then, forming to be carried out. NPCIL to confirm.
12 8. Walchandnagar industries Ltd ( 24/10/2019 02:37 ) 8)Section `C' : NPCIL/33004/0501/DD Rev.1, NPCIL/33004/0502/DD Rev.1 & NPCIL/33004/0504/DD Rev.1:"Discharge Header Suction Header Pressuriser:""We propose to form the dish end with either of the process given below - 1) Welding before forming, 2) Welding after forming (i.e. crown & petals contruction), NPCIL to confirm."
13 9. Walchandnagar industries Ltd ( 24/10/2019 02:37 ) 9)"Section `C' : NPCIL/33004/0501/DD Rev.1, NPCIL/33004/0502/DD Rev.1, NPCIL/33004/0504/DD Rev.1:""Discharge Header Suction Header Pressuriser:"We assume that insulation is not in manufacturer's scope. NPCIL to confirm. Also confirm the requirement of Man hole.
14 10. Walchandnagar industries Ltd ( 24/10/2019 02:37 ) 10)Section `C' : NPCIL/33004/0501/DD Rev.1:Discharge Header:Due to very small quantity of 450NB pipe for N10 & N14 nozzles, we propose to make these nozzles from SA 516 Gr. 70 plates of 60 thick. NPCIL to confirm.
15 11. Walchandnagar industries Ltd ( 24/10/2019 02:38 ) 11) Section `C' : NPCIL/33004/0503/DD Rev.1:DMST Water storage tank:"(i) As per BOM material of construction of base plate is SA 240 Gr. 304L. We propose to have Base plate material of construction as IS 2062. NPCIL to confirm. (ii) NPCIL to confirm requirement of Man hole & platform. (iii) BOM Shows material of construction of Elbow & 180° Return Bend (p.no. 10B & 15) as SA 182 F 304L & SA 182/SS 304L respectively, We assume that material of construction of Elbow & 180° return bend is SA 403 Gr. 304L. NPCIL to confirm. (iv) If we are unable to source small quanties of Pipes, can we use bars of quality SA 182 304L for making nozzles. NPCIL to confirm."
16 12. Walchandnagar industries Ltd ( 24/10/2019 02:38 ) 12)Section `C' : NPCIL/71314/0501/DD Rev.0:Process system DM storage tank:"(i) As per BOM material of construction of base plate is SA 240 Gr. 304L. We propose to have Base plate material of construction as IS 2062. NPCIL to confirm. (ii) NPCIL to confirm requirement of Man hole & platform. (iii) If we are unable to source small quanties of Pipes, can we use bars of quality SA 182 304L for nozzles. NPCIL to confirm."
17 13. Walchandnagar industries Ltd ( 24/10/2019 02:38 ) 13)Section `C' : NPCIL/33004/0505/GA Rev.1:RV Discharge tank:As per Nozzle data shown in drawing, Qty of Nozzle of N2, N3 & N4 is shown as 2, 3 & 3 Nos. respectively but BOM shows one qty for each nozzle. Please confirm the quantity.
18 14. Walchandnagar industries Ltd ( 24/10/2019 02:38 ) 14)Section `C' : 5.1 DESIGN DATA & NPCIL/33004/0504/DD Rev.1:Pressuriser:"Following discrepancy is observed in tender spec & tender drawing - (i) Design temperature given in design data (pg 9/39) is 300°c and in drawing it is given as 310°c. (ii) Operating temperature given in design data (pg 9/39) is 270°c and in drawing it is given as 300°c. (iii) Hydro test Pressure given in design data (pg 9/39) is 190 kg/cm² and in drawing it is given as 165 kg/cm². NPCIL to confirm. "
19 15. Walchandnagar industries Ltd ( 24/10/2019 02:39 ) 15)Section `C' : 5.2 DESIGN DATA & NPCIL/33004/0501/DD Rev.1:Discharge Header:"Following discrepancy is observed in tender spec & tender drawing - (i) Operating pressure given in design data (pg 10/39) is 116 Kg/cm² and in drawing it is given as120 Kg/cm². (ii) Operating temperature given as per design data (pg 10/39) is 270°cand in drawing it is given as 300°c. (iii) Hydro test Pressure given as per design data (pg 10/39) is 190 kg/cm²and in drawing it is given as 189 kg/cm². NPCIL to confirm. "
20 16. Walchandnagar industries Ltd ( 24/10/2019 02:39 ) 16)Section `C' : 5.3 DESIGN DATA & NPCIL/33004/0502/DD Rev.1:Suction Header:"Following discrepancy is observed in tender spec & tender drawing - (i) Operating pressure given in design data (pg 10/39) is 110 Kg/cm² and in drawing it is given as120 Kg/cm². (ii) Operating temperature given in design data (pg 10/39) is 270°cand in drawing it is given as 300°c. (iii) Hydro test Pressure given in design data (pg 11/39) is 190 kg/cm² and in drawing it is given as 189 kg/cm². NPCIL to confirm. "
21 17. Walchandnagar industries Ltd ( 24/10/2019 02:39 ) 17)Section `C' : 5.4 DESIGN DATA & NPCIL/33004/0503/DD Rev.1:DM storage tank:"Following discrepancy is observed in tender spec & tender drawing - (i) Operating pressure given in design data (pg 11/39) as 1 Kg/cm² and in drawing it is given as ATM. (ii) Operating temperature given in design data (pg 11/39) as 40°c and in drawing it is given as 50°c. (iii) Hydro test Pressure given in design data (pg 11/39) as 7.5 kg/cm² and in drawing it is given as 8 kg/cm². NPCIL to confirm. "
22 18. Walchandnagar industries Ltd ( 24/10/2019 02:40 ) 18)Section `C' : 5.5 DESIGN DATA & NPCIL/71314/0501/DD Rev.0:Process system DM storage tank:Operating temperature given as per design data (pg 12/39) as 40°c and in drawing given as 50°c. NPCIL to confirm.
23 19. Walchandnagar industries Ltd ( 24/10/2019 02:40 ) 19)Section `C' : 5.6 DESIGN DATA & NPCIL/33004/0505/GA Rev.0 Relief Valve Discharge Tank:"Following discrepancy is observed in tender spec & tender drawing - (i) Design temperature given in design data (pg 13/39) is 270°c and in drawing it is given as 300°c. (ii) Operating pressure given in design data (pg 13/39) is 2 Kg/cm² and in drawing it is given as 1 Kg/cm². (iii) Operating temperature given in design data (pg 13/39) is 40°c and in drawing it is given as 266°c. (iv) Hydro test Pressure given in design data (pg 13/39) is 7.5 kg/cm² and in drawing it is given as 22.5 kg/cm². NPCIL to confirm. "
24 Deepali Patil / Manager (C) -FTP ( 24/10/2019 03:22 ) All unanswered queries will be responded along with the consolidated response to all the queries raised by the bidder.
25 Deepali Patil / Manager (C) -FTP ( 24/10/2019 03:29 ) Pre-Bid meeting ends.


Sr .No Document Name Date
1    1572954528_Prebidreply1204.pdf 05/11/2019 17:18:48