nuclear fuel complex 3tpa niobium thermit ... - HRPU/NFC/UPT

Spec. No.NFC/PRO-02 

DESIGN, MANUFACTURE, TESTING AND 

SUPPLY OF AGITATED & NON-AGITATED 

PLASTIC(PP-FRP) TANKS WITH 

NECESSARY SUPPORTS 

SHEET 1 

NUCLEAR FUEL COMPLEX 

3TPA NIOBIUM THERMIT PRODUCTION FACILITY 

SPECIFICATION 

FOR 

DESIGN, MANUFACTURE, TESTING, SUPPLY OF 

AGITATED AND NON-AGITATED PLASTIC (PP-FRP) 

TANKS WITH NECESSARY SUPPORTS 

SPECIFICATION NO. NFC/PRO-02 

JULY 2012 

M.N.DASTUR & COMPANY (P) LIMITED 

Consulting Engineers 

Kolkata-Mumbai-New Delhi-Chennai-Bangalore-Bhubaneswar






SHEET 2 

PART A 

TECHNICAL SPECIFICATIONS FOR PP-FRP TANKS 

1. Item: Polypropylene (PP) Tanks reinforced with FRP – agitated and nonagitated 

with necessary supports. 

2. Description: Preparation of fabrication drawings, mechanical design of 

tanks and supports, design of agitator, material procurement, 

fabrication, inspection & testing and supply of agitated and non-agitated 

PP-FRP tanks with necessary supports. 

3. Desired Features: 

The list of the tanks and their details are as indicated in Table 1 and 

Table 2. (Typical sketches enclosed.) 

A) Design and Construction Features of Tanks : 

a) Code for design: BS 4994 

b) Description: Vertical, cylindrical, flat top and conical/flat bottom 

tanks with supported agitator for some tanks and without agitators 

for balance tanks. 

c) Material of Construction: 

i) Vessel body, top cover, bottom, nozzles & flanges: PP reinforced 

with FRP 

ii) Agitator shaft : MS lined with PP 

iii) Impeller: PP 

iv) Gaskets: 3mm thick PTFE. 

v) Counter Flanges: HDPE 

vi) Bolts and nuts: SA 193 Gr. B8 & SA 194 Gr. 8 

vii) Supports: MS lined with FRP.






SHEET 3 

d) Mechanical Design of the tanks shall be carried out and submitted 

by the vendor. The thickness of the tanks shall be calculated by the 

vendor. In any case, the thickness of the tanks shall not be less than 

the values specified below : 

• PP lining: 3 mm 

• Laminate thickness: 5 mm 

e) Top cover shall be bolted to the vessel as shown in the drawings. 

Gasket and fasteners for top cover shall be supplied by vendor. 

f) Flanges: Flanges shall be class 150 as per ANSI B16.5 

g) Nozzles: 

• Number and size of nozzles shall be as indicated in the 

drawings of the tanks. Nozzles shall be designed as per BS 

4994. 

• Nozzles for instrumentation shown in the drawings are only 

indicative and the exact size and location shall be finalized 

prior to approval of fabrication drawings. 

• Reinforcement calculations for the nozzles shall be submitted 

by the vendor. Stiffeners shall be provided as per requirement. 

• Matching blind flanges, gaskets and fasteners for all nozzles 

shall be supplied by vendor. 

h) Necessary baffles for agitator vessels shall be provided suitably by 

the vendor. 

i) Supports: Lug supports shall be used for tanks with capacity upto 

1kl. For 2, 3 and 5 kl tanks, ring type supports shall be used. Design 

details to be submitted by the vendor. 

j) Lifting lugs: Lifting lugs shall be provided suitably on top cover and 

cylindrical shells for all the tanks. 

k) Fabrication: Hand layup or open contact molding may be adopted. 

Vendor to specify the details of fabrication procedure followed. 

l) FRP Material: FRP material used shall be the following (or any other 

superior material which shall be quoted separately) unless other wise 

mentioned specifically as different. 

• Resin - Bisphenol A






SHEET 4 

• Chopped Strand Mat - Glass E Type, >= 450 g/m2 

• Woven roving - Glass E Type, 610 g/m2 

• Surface Veil – C Veil 

• Resin to Glass Ratio : Resin shall be minimum 65% 

No fillers shall be used in FRP. 

B) Agitator Details: 

a) Agitator of reputed make (Remi/Standard Engineer/Fibre & Fibre 

Products/ Thermotech Engineering) complete with drive motor , 

reduction unit and other accessories. 

b) Design of agitator including strength calculations and critical speed 

calculations shall be submitted by the vendor. Tenderer, if required, may 

collect test samples of process fluids from NFC Hyderabad to generate 

necessary data for design of the agitator and its motor rating. 

Performance guarantee for the agitator under actual conditions has to be 

demonstrated by the vendor. 

c) Type of impeller: Pitched Blade Turbine 

d) Impeller Diameter: ~ 25% of tank diameter. Details to be confirmed by 

the vendor 

e) Speed of agitator: 150 rpm for clear liquids and 200 rpm for slurries. 

Details to be confirmed by the vendor. 

f) Type of mounting: Horizontal as shown in sketch 

g) Type of seal: Mechanical seal of reputed make (Burgman/ Flowserve/ 

John Crane/ Eagle Poonawal) 

h) Type of installation: Agitator shall be installed at the centre of the top 

cover. 

i) Supports: The agitator assembly along with drive unit shall be 

supported on the tank supports for ring type supports as indiacted in 

the drawing (Drg No. 26616-39-00-PRJ-0060). Separate support for 

agitator assembly shall be provided as indicated in the drawing (Drg No. 

26616-39-00-PRJ-0011) for other tanks. Design calculations and details 

of the agitator support to be submitted by the vendor.






SHEET 5 

j) Drive unit: Reputed make (NGEF/KIRLOSKAR/SIMENS) spark proof, 3 

phases, motor of suitable KW and speed. KW, speed, frame size, voltage 

shall be stated in the offer. Flame proof motors with IP 65 protection 

shall be provided where necessary as shown in the data sheets. 

k) Drive connection: Gear driven 

l) Speed Reduction Unit: Gear Assembly 

m) Speed Reduction Ratio: To be worked out by the vendor 

n) Drive motor and gear box shall be mounted on common base plate. 

o) Coupling: 

i) Agitator shaft and gear box output shaft shall be coupled through 

a rigid coupling with split ring locking arrangement in order to 

ensure that the agitator shaft doesn’t fall into the vessel during 

the operation. 

ii) 

p) Accessories: 

Gear box and drive motor shall be coupled through flexible 

coupling. 

i) Agitator shaft with impellers 

ii) 

iii) 

iv) 

Mechanical seal with seal housing 

Bearings 

Gear box 

v) Foot step bearing with support 

vi) 

vii) 

Coupling 

Fasteners. 

q) Other details: Details regarding mechanical seal etc. to be specified by 

vendor. 

r) Agitator assembly shall be designed to minimize vibrations. 

C) Spares: Recommended spares for two years of trouble-free normal operation 

shall be listed and quoted separately item-wise.






SHEET 6 

4. Scope of Supply: 

i) Preparation of fabrication drawings, mechanical design of tanks and 

supports, design of agitator, material procurement, fabrication, 

inspection & testing, and supply of agitated and non-agitated PP-FRP 

tanks with necessary supports. 

ii) Agitator assembly as mentioned under item (B) above complete with 

drive motor, reduction unit, mechanical sealing arrangement and 

complete mounting arrangement, foundation bolts and nuts. 

iii) Spares as indicated in 3 (C) of Part-A. 

iv) Consumable materials required for initial filling, start-up and 

commissioning of agitators. 

5. Inspection and testing 

All the equipment shall be inspected and tested at the supplier’s works 

before delivery. All the tests shall be arranged by the supplier free of cost at 

his works. 

Testing shall be carried out as per BS: 4994 standard. 

• Dimensional check. All dimensions shall be as per approved drawing. 

• For the testing of the laminate the following testing methods shall be 

adopted: 

a) Surface hardness test (barcol test). The laminate should have a 

surface hardness of 90% of resin manufacturer’s specified minimum 

value. The testing to be done in a government recognized laboratory 

and the test report to be submitted at the time of inspection. 

b) Manufacturers test certificates shall be produced for the quality 

assurance of the resins and glass. The testing shall be done in a 

recognized laboratory and the test report to be submitted at the time 

of inspection. 

• Hydrostatic test shall be conducted. 

• Agitator performance shall be demonstrated by the supplier at site for 

speed, power consumption and efficiency.






SHEET 7 

6. Documents to be Furnished: 

With the Technical offer (Part-1) 

After Placement of Order 

Preliminary design calculations of 

the tanks and agitators. 

Detailed Technical specifications 

indicating all the required 

parameters like thickness, resin 

details, fabrication procedure, 

support details, agitator details etc. 

Technical brochures, catalogues of 

the bought out items. 

Filled in data sheets in the format 

as indicated in Part-C to be 

furnished for all the agitators 

List of spares with part nos. 

description and specification. 

Detailed Design calculations (for approval) : 

• Mechanical design 

• Agitator Design 

• Nozzle Reinforcement calculations 

• Support design calculations 

Detailed shop drawings showing weights 

and dimensions of equipment, all nozzles, 

wall thickness, laminate makeup, 

fabrication techniques, and construction 

materials – for approval 

Detailed dimensional drawings, schematic 

and line diagram for agitator assembly and 

the accessories 

Written instructions and recommended 

methods for unloading, storing and 

installing the tanks and recommended 

lifting and handling procedures, including 

all bolt torques. 

Installation and maintenance instruction 

manual for agitator and its accessories. 

Quality Assurance Plan Material test certificates showing its 

chemical composition and mechanical 

properties and other test certificates for all 

important parts of the equipment 

Loading data for each of the equipments 

Foundation detail drawings for the process 

tank and agitator supports.


DESIGN, MANUFACTURE, TESTING AND SUPPLY OF AGITATED & NON- 

AGITATED PLASTIC(PP-FRP) TANKS WITH NECESSARY SUPPORTS 

SHEET 8 

Sl. 

No. 

I. 

Tag No. 

Conical 

Bottom 

1. T.ODR- 

01,02, N- 

ODR 01,02 

2. T-PPT-01,02, 

N-PPT-01,02 

II. Flat Bottom 

TABLE 1: LIST OF VERTICAL, CYLINDRICAL WITH FLAT BOLTED HEAD, PP TANKS 

WITH FRP REINFORCEMENT – WITH AGITATOR 

Capacity 

(kl) 

Fluid Handled 

0.75 40% HF acid with 

37% solids& steam 

1 NH 4F, NH 4OH 

solution with 10% 

solids 

1. T.FPT-01,02 1 Fluoro niobic acid, 

Fluoro tantalic acid, 

HF acid, H 2SO 4 

2. N.FPT-01,02 1 Fluoro niobic acid, 

Fluoro tantalic acid, 

HF acid, H 2SO 4 

3. N.SRU-01 1 TBP, kerosene, 

Na 2CO 3 soln. 

Viscosity 

@ 20 o C, 1 

atm 

(cP) 

Specific 

gravity 

@ 20 o C, 1 

atm 

Operating 

Conditions 

Temp. 

( o C) Pressure Qty 

Sketch Ref. 

1.5 1.6 80 1 atm 4 26616-39-00- 

PRJ-0025 

1.5 1.3 70 1 atm 4 26616-39-00- 

PRJ-0026 

1.5 1.34 40 1 atm 2 26616-39-00- 

PRJ-0029 

1.5 1.34 40 1 atm 2 26616-39-00- 

PRJ-0056 

2 0.9 40 1 atm 1 26616-39-00- 

PRJ-0030 

4. T.HSDT- 1 HF acid, H 2SO 4 2.2 1.4 40 1 atm 2 26616-39-00-


DESIGN, MANUFACTURE, TESTING, PACKING, SUPPLY AND 

SUPERVISION OF ERECTION & COMMISSIONING OF PLASTIC TANKS 

AND AGITATORS 

SHEET 9 

Sl. 

No. 

Tag No. 

Capacity 

(kl) 

Fluid Handled 

Viscosity 

@ 20 o C, 1 

atm 

(cP) 

Specific 

gravity 

@ 20 o C, 1 

atm 

Operating 

Conditions 

Temp. 

( o C) Pressure Qty 

Sketch Ref. 

01, 02 PRJ-0031 

5. N-AT-01,02 1 Sodium Niobate 

solution with 43 % 

solids 

1.2 40 1 atm 2 26616-39-00- 

PRJ-0027 

6. N.HFDT-01 0.5 HF solution 1.15 40 1 atm 1 26616-39-00- 

PRJ-0028 

7. E –HT- 

1A/B/C, 

2A/B/C 

8. E-IT- 

1A/B,2A/B 

9. E-R-1A/B, 

2A/B 

5 HF,H 2SO 4 solution ~1 1.1 40 1 atm 6 26616-39-00- 

PRJ-0032 

5 CaF, CaSO 4 

solution with solids 

3 HF,H 2SO 4 solution 

with lime 

1.2 40 1 atm 3 26616-39-00- 

PRJ-0034 

1.2 40 1 atm 4 26616-39-00- 

PRJ-0033 

10. SLDT-01 3 12% H 2SO 4 solution 1.08 40 1 atm 1 26616-39-00- 

PRJ-0046




AND AGITATORS 

SHEET 10 

TABLE 2: LIST OF VERTICAL, CYLINDRICAL WITH FLAT BOLTED HEAD AND FLAT BOTTOM PP TANKS 

WITH FRP REINFORCEMENT – WITHOUT AGITATOR 

Sl. 

No. Tag No. 

1. T-FRS- 

01,02, T- 

SRT 

2. 

Capacity 

(kl) 

1 

T-IMST-01 1 

3. T-SDT-01, 

N-SDT-01 

4. 

5. 

6. 

7. 

T-FDT-01 1 

T-ECT-01 1 

N-FDT-01 1 

N-ECT-01 1 

Fluid Handled 

Acidic solution 

containing HF 


containing HF 

Specific 

gravity @ 

20 o C, 1 

atm 

Operating conditions 

Temp. 

Pressure 

Qty 

1.6 40 o C 1 atm 3 

1.6 40 o C 1 atm 1 

1 TBP + Kerosene 0.9 40 o C 1 atm 2 


containing HF 


containing HF 


containing HF 


containing HF 

1.6 40 o C 1 atm 1 

1.6 40 o C 1 atm 1 

1.6 40 o C 1 atm 1 

1.6 40 o C 1 atm 1 

Drg Ref. 

26616-39-00- 

PRJ-0042 

26616-39-00- 

PRJ-0058 

26616-39-00- 

PRJ-0043 

26616-39-00- 

PRJ-0044 

26616-39-00- 

PRJ-0057 

26616-39-00- 

PRJ-0059 

26616-39-00- 

PRJ-0045




AND AGITATORS 

SHEET 11 

Sl. 

No. 

8. 

9. 

10. 

11. 

12. 

13. 

14. 

Tag No. 

Capacity 

(kl) 

T.SET-01,02 1 

N.SET-01,02 0.5 

T.DMWST- 

01,BDT 

01,02 

3 

Fluid Handled 


containing HF 


containing HF 

DM water / 

Ammo-nium 

Sulfate / 

hydroxide soln. 

Specific 

gravity @ 

20 o C, 1 

atm 

Operating conditions 

Temp. 

Pressure 

Qty 

1.3 40 o C 1 atm 2 

1.3 40 o C 1 atm 2 

1 40 o C 1 atm 3 

T-SMT-01 1 TBP + Kerosene 0.9 40 o C 1 atm 1 

N.SMT-01 1 TBP + Kerosene 0.9 40 o C 1 atm 1 

HFST-01,02 2 40% HF 40 o C 

E.FT-1A- 

01/2A-01 

5 

Calcium fluoride 

& calcium 

sulphate 

solution 

1 atm & 

650mm Hg 

vacuum 

1.0 40 o C 1 atm 2 

2 

Drg Ref. 

26616-39-00- 

PRJ-0035 

26616-39-00- 

PRJ-0036 

26616-39-00- 

PRJ-0039 

26616-39-00- 

PRJ-0037 

26616-39-00- 

PRJ-0038 

26616-39-00- 

PRJ-0041 

26616-39-00- 

PRJ-0040

Spec. No. NFC/PRO-02 





SHEET I 

PART-B 

GENERAL TERMS AND CONDITIONS 

1. Unit Price: The vendor shall quote the unit price for the equipment 

including accessories as indicated in Part-A (Clause 3.0) for delivery 

to NFC stores. Packing & Forwarding, Delivery charges, Taxes and 

duties, if any shall be clearly mentioned. 

2. Evaluation: This is a two part tender, so technical and financial offer 

shall be submitted separately. Financial bid of the technically 

qualified parties will be opened after evaluation of the technical bid. 

Comparative statement shall be prepared combining all the items/ 

equipments included in the scope of work. Total cost including all 

the items/ equipment as indicated in the scope of work shall be 

calculated and the technically qualified collective lowest offer will be 

considered for placing the order. 

3. Design and Fabrication drawings: The successful vendor shall 

submit all the detailed design calculations and the fabrication 

drawings for the equipment and accessories within 15 days from the 

date of receipt of the firm order. The actual fabrication shall be 

started only after the receipt of approved fabrication drawings from 

the users. 

4. GA Drawings: The vendor shall submit GA drawing of agitators 

showing the dimensions of various parts and material of 

construction along with their quotation. 

5. Marking: The tanks shall be marked with year of manufacture, 

capacity and tag number. All the other major parts shall be marked 

with make and model. 

6. Material test certificates: The vendor shall provide material test 

certificates for all materials from approved laboratory only, for all the 

materials used in fabrication of the equipment and accessories. 

7. Vendor Information: Vendors are requested to give details of the 

similar types of jobs executed by them with Purchase order copies. 

Vendors shall submit other details viz, fabrication procedures, lining 

facilities, sub-contractors if any, facilities available for inspection & 

testing etc. The vendor may suggest for any alternative materials and 

also quote for the alternating materials. The vendor shall mention the 

facilities available at their works for inspection and testing of the 

items. 

8. Validity: The offer shall be valid for a minimum period of 120 days.






SHEET I 

9. Guarantee: The vendor shall give Performance guarantee for 

capacity, power consumption and efficiency and guarantee that the 

pumps are free from defects of design, materials and 

workmanship/manufacturing, for at least 12 months from the date 

of commissioning or 24 months from the date of supply, which ever 

is earlier. 

10. Delivery Period: Delivery period is maximum 12 weeks from the 

date of receipt of purchase order. 

11. Delivery: The items shall be delivered to NFC stores. The items shall 

be suitably packed so as to avoid any damage during transportation. 

It shall be delivered at site in good condition 

12. Final Drawings and Documents: 3 Nos. of final 

drawings/documents along with a soft copy of such approved 

drawings/documents shall be submitted by the successful vendor. 

13. Painting: All the external parts of the equipment including 

structural parts and accessories shall be painted with two coats of 

epoxy paint after one coat of epoxy primer and proper surface 

preparation and finish. No painting scheme is applicable for FRP 

laminated parts. 

14. Inspection & Testing: The equipment and accessories shall be 

inspected and tested at the supplier’s works before delivery as 

mentioned in Part-A. Inspection & Testing involves visual inspection, 

dimension checking, hydrostatic test for leak proofness and spark 

test for continuity. The equipment will be accepted only after passing 

all above tests satisfactorily. 

Note to the Vendor: 

a) Only offers of Fabricators with proven technology for design and 

fabrication of such items will be considered for evaluation. 

b) The quotation should be complete in all respects ( with motors, 

agitators, accessories and spares). Incomplete quotations are likely 

to be rejected.






SHEET I 

PART-C 

SAMPLE DATA SHEET FOR AGITATOR 

M.N. DASTUR & COMPANY (P) LTD, 

CONSULTING ENGINEERS, CHENNAI 

DATA SHEET FOR 

AGITATOR 

Spec. No. 

NFC/PRO-07 

CLIENT : Qty. Tag Nos. Unit Revision : 00 

PROJECT : NTPF 1 T-AG-01 Ore Dissolution reactor (T.ODR) 

Design Standard * 

Fluid Properties/Performance Data 

Tank Details 

Components to be As per Table-1 Type Vertical 

mixed 

Phase – 

Solid-liquid 

Diameter (DT) As per sketch 

Solid/liquid/gas 

Height 

% solids 20% Operating Temp. As per Table-1 

Solids – particle size - 200 mesh Operating Pressure As per Table-1 

Nature of solids Soluble / Insoluble 

Abrasive/ Sticky 

Crystalline/Fluffy 

Design 

Temperature 

* 

Sp. Gravity of mixture As per Table-1 Design Pressure * 

Viscosity of mixture As per Table-1 Baffles: Required 

Number 

Length 

* 

* 

* 

Purpose of mixing 

Dissolving/Mixing/ 

Suspension 

Liquid level 

Minimum 

Maximum 

20% of height 

70% of height 

Type of mixing desired Mild/ Medium/ violent Construction Data 

Tendency to foam Slight/Average/High/NA Impeller 

Mixing time 30 min Type Pitched blade 

turbine 

Batch size: Maximum 70% of tank capacity Diameter * 

Mixing operation 

during filling/ 

emptying of tank 

Yes/No No. of Blades * 

Fixed/Removable Fixed 

Accessories by Vendor Speed * 

Driver 

Electric Shaft Diameter * 

Motor 

Mechanical Seal Yes Shaft Length * 

Coupling on drive assembly Yes Critical speed * 

Speed Reducer Gear box Shaft coupling Flexible 

Accessories for seal : Flushing/ 

cooling plan inclusive of seal pot & 

associated piping 

Yes Shaft Seal Mechanical Seal 

Driver Details 

Material of Construction 

Type Electric Motor Shaft MS lined with PP 

HP * Impeller PP 

RPM * 

Efficiency * 

Flame proof protection Yes/No * 

* - VENDOR TO SPECIFY

nuclear fuel complex 3tpa niobium thermit ... - HRPU/NFC/UPT

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