note - vikram sarabhai space centrevssc.gov.in/vssc_v4/images/tender/pt_194_11.7.16.pdf · note :-...

Note :-

1. Full details and specifications of the items and general instructions to be followed regarding submission of tenders are indicated in the tender documents.

2. Tender Documents can be downloaded from our websites and also be obtained

from the following address on request and submission of tender fee :

For Sl. No. 1 : Sr. Purchase & Stores Officer, PCM / PRSO Purchase, Purchase Unit

III, RFF Area, VSSC, ISRO PO, Thiruvananthapuram – 695 022, Ph : 0471-256 3775.

For Sl. No. 2 : Purchase & Stores Officer, CMSE Purchase Unit, Vattiyoorkavu PO,

Thiruvananthapuram – 695 013, Ph : 0471-256 9290.

While requesting for Tender Documents please indicate on the envelope as “Request for Tender Documents- Tender No……….. dt……………”.

3. Tender Fee (` 573/-) shall be paid in the form of CROSSED DEMAND DRAFT ONLY. Other mode of payment is not acceptable. The Demand Draft should be in favour of : Accounts Officer, PCM/PRSO Accounts, VSSC (for item under Sl. No. 1) payable at State Bank of India, Thumba, Thiruvananthapuram & Accounts Officer, CMSE Accounts, VSSC (for item under Sl. No. 2) payable at State Bank of India, Main Branch, Statue, Thiruvananthapuram [The tender fee is NON-REFUNDABLE].

Government Departments, PSUs (both Central and State), Small Scale Industries units borne in the list of NSIC and foreign sources are exempted from submission of tender fee. Those who are coming under the above category should submit documentary evidence for the same.

4. While submitting your offer, the envelope shall be clearly superscribed with

Tender No. and Due Date and to be sent to the following address.

For Sl. No. 1 : Sr. Purchase & Stores Officer, PCM / PRSO Purchase, Purchase Unit

III, RFF Area, VSSC, ISRO PO, Thiruvananthapuram – 695 022, Ph : 0471-256 3775.

For Sl. No. 2 : Purchase & Stores Officer, CMSE Purchase Unit, Vattiyoorkavu PO,

Thiruvananthapuram – 695 013, Ph : 0471-256 9290.

5. Quotations received after the Due Date/Time will not be considered.

6. VSSC, Thiruvananthapuram is not responsible for any postal delay/loss of documents in transit.

7. Head, Purchase & Stores, VSSC, Thiruvananthapuram reserves the right to accept

or reject any/or all the tenders in part or full without assigning any reasons thereof.

Annexure A

Sl. No.

Item Description Unit Qty Unit Cost (Rs)

Total Cost (Rs)

Work contract for assistance in processing of Carbon-Carbon composite products

through Chemical Vapour Infiltration (CVI) Furnace of size Ø800mm × 1200mm

Height; and Vacuum Induction Furnace (VIF) of size Ø2000mm × 2000mm

Height for carrying out Chemical Vapour Infiltration (CVI) process using Methane

gas, Silicon Carbide (SiC) coating / infiltration process using Methyl trichloro

silane (MTCS) / Mono methyl silane (MMS) and graphitization process at a

temperature of the order of 26000C (max.), employing Engineering graduates

(passed B.Tech. / B.E. course in mechanical/electrical / electronics / chemical

engineering), Technical Assistants (passed Diploma in mechanical / electrical /

electronics / chemical engineering) and Technicians having passed ITI course as

per essential conditions to be fulfilled by the contractor and the annexures – I to

XVII attached. Details are as follows:

I. PROCESSING IN CVI FURNACE (Ø800mm × 1200mm Height)

1. Chemical Vapour Infiltration (CVI) process using methane gas for making

carbon-carbon composite products

1.1 Health checking of the furnace, sub systems of the furnace and its

accessories, preparatory works, assembly & loading of components inside

the furnace as per Annexure - 1 (Item 1.1.1 to 1.1.18).

1.2 Operation of CVI furnace for CVI process and related works as per the

process parameters and recipe provided by VSSC, as per Annexure - II. (Item

1. 2.1 to 1.2.17).

1.3 Dismantling, unloading of product, soot removal and cleaning as per

Annexure - III (Item 1.3.1 to 1.3.18)

2. Silicon Carbide (SiC) coating / Infiltration process

2.1 Health checking of the furnace, preparatory works including cleaning of

pipelines and flushing, assembly and loading of component in the furnace as

per Annexure - IV (Item 2.1.1 to 2.1.19).

2.2 Operation of CVI furnace for Silicon Carbide coating / Infiltration and related

activities, as per annexure V (item 2.2.1 to 2.2.16).

2.3 Dismantling, unloading of the product and cleaning as per Annexure - VI

(Item 2.3.1 to 2.3.20).

3. Preventive maintenance of furnace system

Activities involved are as per annexure - VII ( Item 3.1 to 3.11)

Cycle

Cycle

Nos.

30 12

4

Specific Conditions if any :

1. The above work shall be executed with in a period of one year from the date of release of Purchase Order. 2. Payment will be made as per actual cycles completed on monthly basis. 3. Party shall give a written statement that they have read all the terms and conditions, annexures and

essential conditions to be fulfilled by the contractor in the enquiry and are complying with all the requirements.

II. PROCESSING IN VACUUM INDUCTION FURNACE(Ø2000mm × 2000mm

Height)

1. Chemical Vapour Infiltration process using methane gas for making carbon-

carbon composite products

1.1 Health checking of furnace, sub systems of the furnace and its accessories,

preparatory works, assembly & loading of components inside the furnace as per

annexure- VIII (Item 1.1.1 to 1.1.19)

1.2 Operation of Vacuum Induction Furnace for chemical vapour infiltration and

related works as per the process parameters and recipe provided by VSSC, as

per annexure - IX (Item 1.2.1 to 1.2.16)

1.3 Dismantling, unloading of product, soot removal and cleaning as per annexure -

X (Item 1.3.1 to 1.3.20)

2. Silicon carbide coating / Infiltration process

2.1 Health checking of the furnace, preparatory works including cleaning of

pipelines and flushing, assembly and loading of component in the furnace as per

Annexure - XI (Item 2.1.1 to 2.1.19).

2.2 Operation of Vacuum Induction Furnace for Silicon Carbide coating / Infiltration

and related activities, as per annexure - XII (item 2.2.1 to 2.2.16).

2.3 Dismantling, unloading of the product and cleaning as per Annexure - XIII (Item

2.3.1 to 2.3.18).

3. Graphitization process up to 26000C (Max)


preparatory works, assembly & loading of components inside the furnace, as per

annexure – XIV (Item 3.1.1 to 3.1.18)

3.2 Operation of Vacuum Induction Furnace for graphitization process and related

works as per annexure – XV (Item 3.2.1 to 3.2.16)

3.3 Dismantling, unloading of product, and cleaning as per annexure – XVI (Item

3.3.1 to 3.3.20)

4. Preventive maintenance (mechanical systems) of overall furnace system

Maintenance of the total furnace system (mechanical) including repair/maintenance

of all accessories/ sub systems, once in three months a year as per annexure - XVII

(Item 4.1 to 4.11)

Cycle

Cycle

Cycle

Nos.

12 6

12 4

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Essential conditions to be fulfilled by the contractor

• Since these processes are conducted at high temperature in the furnace, where a

lot of automation and control equipments like Programmable Logic Controllers

(PLC’S), Programmable Temperature Controllers (PTC’S), Human Machine Interface

(HMI) Systems etc are involved, the contractor shall have full knowledge in operating

such high temperature furnaces working under vacuum with lot of control and

instrumentations; and this shall be indicated in the offer.

• The contractor shall have capability and awareness about handling, loading,

unloading and assembly of Carbon-Carbon composite products and delicate

graphite tooling/fixtures inside the furnace without disruption/ damage of the total

furnace system.

• Also, the contractor shall have know-how in handling gases like methane, hydrogen,

argon, nitrogen etc and shall have knowledge in handling chemicals like H2SO4,

NaOH , Methyl Trichloro Silane (MTS) etc.

• The contractor shall also have knowledge in the operation of MSLD (Mass

Spectrometer Leak Detector) for the purpose of leak checking of the total furnace

system and individual gas lines.

• The contractor shall provide the details of knowledge and capability in the above

mentioned points in the offer, stating the name of the organization / firm, duration,

nature of work done etc.

• VSSC will verify the details of knowledge and information provided by the contractor

and his team for accepting the offer.

• If the details provided are not meeting the requirement such offers will not be

considered.

• The contractor shall give a written statement that he has gone through all the terms

& conditions, essential conditions to be fulfilled by the contractor and the contents

in the annexures attached and is complied with all the points.

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I. ASSISTANCE IN PROCESSING OF CARBON-CARBON COMPOSITE PRODUCTS THROUGH

CHEMICAL VAPOUR INFILTRATION (CVI) FURNACE OF SIZE - Ø800mm × 1200mm HEIGHT

Introduction: The CVI Furnace is intended for processing of C-C / C-C-SiC composite

products at high temperature of the order of 1100 - 1200 °C under vacuum and flow of

gases. Following processes and preventive maintenance to be carried out in the furnace:

1. Chemical Vapour Infiltration (CVI) process using methane gas for making carbon-

carbon composite products

2. Silicon Carbide (SiC) coating / Infiltration process

3. Preventive maintenance of furnace system

1. CHEMICAL VAPOUR INFILTRATION (CVI) PROCESS USING METHANE GAS FOR MAKING

CARBON-CARBON COMPOSITE PRODUCTS

One cycle of CVI process consists of

1.1 Health checking of the furnace, sub systems of the furnace and its accessories,

preparatory works, assembly & loading of components inside the furnace.

1.2 Operation of CVI furnace for CVI process and related works as per the process

parameters and recipe provided by VSSC.

1.3 Dismantling, unloading of product, soot removal and cleaning.

ANNEXURE - I

1.1 Health checking of the furnace, sub systems of the furnace and its accessories,

preparatory works, assembly & loading of components inside the furnace:

The following activities shall be carried out by the contractor’s personnel under the

supervision of VSSC staff.

1.1.1 Before starting the preparatory works, each & every systems / sub systems shall be

checked thoroughly for its proper and safe working, as per the check list provided

by VSSC Engineers.

1.1.2 Confirm the adequate availability of process gas/inert gas and connect full cylinders

in the gas manifold for each gas.

1.1.3 Clean the water sump, cooling tower, etc and fill with adequate quantity of fresh

water.

1.1.4 Check all the interlocks are in the proper status.

1.1.5 Identify the preforms & fixtures for processing in the furnace and record the details

in the Log book.

1.1.6 Note down size and weight and ensure availability of the total quantity of process

gas /inert gas as per the process provided by VSSC staff.

1.1.7 Make all arrangements inside the furnace, like thermocouple fixing, connection of

gas admission tubes, position of graphite packing, pre heaters , gas distributer,

graphite foils etc.

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1.1.8 Before loading the product, all the activities as mentioned in the safety procedure

provided by VSSC shall be carried out.

1.1.9 Material handling activities like loading of cylinders/fabric/consumables etc from

store area to the furnace and back shall be carried out.

1.1.10 Before loading, the total CVI Furnace system shall be leak tested.

1.1.11 Contract personnel shall wear appropriate Personal Protective Equipment (PPES),

which will be supplied by VSSC, whenever needed.

1.1.12 Equipment/tools/consumables needed for the furnace operation and maintenance

shall be supplied by VSSC and the same shall be cleaned properly and returned

after use without any damage.

1.1.13 The contract engineers/supervisors shall have adequate knowledge in handling

delicate devices like flow meters, flow controllers, temperature indicators,

temperature controllers, programmable logic controllers, pressure transducers &

Controllers etc.

1.1.14 The contractor shall provide adequate number of trained contract staffs for which

prior intimations will be given by VSSC engineers concerned.

1.1.15 During the above mentioned operation, Technical assistant and Technicians from

contractor’s side shall be present for executing the work.

1.1.16 The work shall be completed within one day.

1.1.17 Contract personnel shall not be allowed to work more than 24 hours continuously.

1.1.18 Safety of the contract personnel is the sole responsibility of the contractor.

ANNEXURE - II

1.2 Operation of CVI furnace for CVI process and related works as per the process

parameters and recipe provided by VSSC:

The contractor’s personnel shall carry out the following activities under the supervision of

VSSC staff.

1.2.1 Loading the product with appropriate fixture.

1.2.2 Close the furnace for starting the process for CVI process.

1.2.3 Monitor the gas flow at the manifold side.

1.2.4 Program the process cycle in the HMI panel.

1.2.5 Set the parameters like pressure, differential pressure, process gas flow rate, inert gas

flow rate, etc required for processing as per recipe provided by VSSC.

1.2.6 All the safety interlocks specified in operating manual shall be verified.

1.2.7 All the requirements like power supply, water supply, gas supply, DG Supply etc. shall

be verified.

1.2.8 Start the process and carryout the sequence of operation of the furnace as per

instruction and check list provided by VSSC engineers.

1.2.9 Monitor and record the parameters like pressure, furnace temperature, water inlet

temperature, water outlet temperature, water flow rate, gas flow rate, gas pressure

at manifold side, power, frequency, voltage etc in the respective Log book.

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1.2.10 Load appropriate gas cylinder as and when it is required and unload the empty gas

cylinders.

1.2.11 In case of any deviation in the process, inform the Engineer in charge immediately

and take appropriate corrective action as suggested by VSSC Engineers.

1.2.12 The contract personnel shall take at most care in handling delicate instruments like

gas flow meters, regulators, water flow meters, pressure controllers etc.

1.2.13 Contractor shall arrange trained Engineers/ Technical Assistants/Technicians needed

for the continuous operation for duration of 6 days (approximately) round the clock

shift.

1.2.14 During power failure, the team on contract shall assist the department staff for

operating the generator set.

1.2.15 During each shift of operation, trained contract personnel including Engineers,

Technical Assistants and Technicians shall be employed.



ANNEXURE - III

1.3 Dismantling, unloading of product, soot removal and cleaning:

Contractor’s personnel shall carry out the following activities under the supervision of

VSSC staff.

1.3.1 Before opening the lid of the furnace, verify the temperature inside the furnace and

make sure that the temperature is in safe limit.

1.3.2 Open the furnace safely, lower the bottom part with the product and place it

properly.

1.3.3 Remove traces of carbon soot in the hot zone using portable dust collectors

provided by VSSC.

1.3.4 Keep the bottom of the furnace open for fresh air entry inside the furnace.

1.3.5 Before entering inside the furnace sufficient quantity of air shall be purged using

compressor

1.3.6 Use appropriate personal protective equipments which will be supplied by VSSC

during unloading & cleaning.

1.3.7 Proper care shall be taken during unloading of the product along with toolings and

instructions of VSSC Engineers shall be strictly followed

1.3.8 Place the component safely away from the furnace at appropriate location.

1.3.9 Clean the condenser, filters, graphite fixtures, vacuum lines etc to remove carbon

dust/soot after dismantling.

1.3.10 If any minor modification is needed on the furnace insulation, the same has to be

done by the contractor.

1.3.11 The contract personnel shall take at most care in handling delicate instruments

during cleaning.

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1.3.12 Take the mass and size of the component dismantled and record it properly in the

log book with product details and proper identifications.

1.3.13 Product after cleaning shall be identified using special labels provided by VSSC.



1.3.15 During each shift of operation mentioned above, Technical assistant and

Technicians shall be present for executing the work.


1.3.17 Contract personnel shall not be allowed to work more than 24 hours con tenuously.

1.3.18 Safety of the contract personnel lies only with the contractor

2. SILICON CARBIDE (SIC) COATING / INFILTRATION PROCESS

One cycle of SiC coating/infiltration process consists of

2.1 Health checking of the furnace, preparatory works including cleaning of pipelines

and flushing, assembly and loading of component in the furnace.


activities.

2.3 Dismantling, unloading of the product and cleaning.

ANNEXURE - IV

2.1 Health checking of the furnace, preparatory works including cleaning of pipelines and

flushing, assembly and loading of component in the furnace:



2.1.1 The contract personnel shall check each & every systems / sub systems thoroughly

for its proper and safe working as per the check list provided by VSSC Engineers.


in the gas manifold for each gas.

2.1.3 Fill cyclo hexane in cyclo hexane tank for the purpose of system flushing.

2.1.4 Flush all the lines coming in the SiC system with cyclo hexane

2.1.5 Prepare the neutralization solutions and introduce in the system safely.

2.1.6 Fill MTCS from storage tank to service tank.

2.1.7 Safely neutralize and dispose empty drum.

2.1.8 Clean the water sump, cooling tower etc and fill with adequate quantity of fresh

water.



2.1.10 Make all arrangement inside the furnace, like thermocouple fixing, position of

graphite packing & foils etc.

2.1.11 Before starting loading the product, all the activities as mentioned in the safety

procedure provided by VSSC, shall be carried out.

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2.1.12 Material handling activities like loading of cylinders/fabric /consumables from store

area to the furnace and back shall be carried out.



2.1.14 Equipment /tools/consumables needed for the furnace operation and maintenance



2.1.15 The contract Engineers/ Technical Assistants shall have adequate knowledge in

handling delicate devices like flow meters, flow controllers, temperature indicators,

temperature controllers, programmable Logic controllers, etc.

2.1.16 During the operation mentioned above Engineer, Technical assistants and

Technicians shall be present for executing the work.

2.1.17 The work shall be completed within two days.



ANNEXURE - V


activities:

The contractor’s personnel shall carry out the following activities under the

supervision of VSSC Staff.

2.2.1 Load the product using appropriate fixture and conduct all checks as per the check

list provided by VSSC.

2.2.2 Close the furnace for starting the process with bottom part closure.

2.2.3 Set and regulate the gas flow.

2.2.4 Program the cycle for the process in HMI panel.

2.2.5 Set the parameters like pressure, differential, pressure gas flow rate, inert gas flow

rate etc. required for processing as per the recipe provided by VSSC.



be verified.



2.2.9 Monitor and record the parameters like pressure, furnace temperature, and water

Inlet / outlet temperature, water flow rate, gas flow rate, gas pressure at manifold

side, power, frequency voltage etc in the respective log books.

2.2.10 Load appropriate gas cylinder as and when it is required and unload the empty

gas cylinders.

2.2.11 In case of any deviation in the process, inform the Engineer in charge

immediately and shall take appropriate corrective action as suggested by VSSC

Engineers.

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2.2.12 The contract personnel shall take at most care in handling delicate Instruments

like gas flow meters, regulators water flow meters, pressure controllers etc.

2.2.13 Contractor shall arrange trained Engineers/Technical Assistants/Technicians

needed for the continuous operation for duration of 4 days (approx) round the

clock shift.





ANNEXURE - VI

2.3 Dismantling, unloading of the product and cleaning:


VSSC staff.

2.3.1 Before opening the bottom lid of the furnace verify the temperature inside the

furnace and make sure that the temperature is in safe limit.

2.3.2 Detach the gas connection plate from the bottom lid by removing the fasteners.

2.3.3 Remove the product along with the bottom lid away from the furnace and place it

properly using overhead crane after confirming safe handling temperature.

2.3.4 Remove traces of precipitate/impurities in the hot zone using portable dust collector.

2.3.5 Clean the bottom lid to remove traces of impurities.

2.3.6 Before entering inside the furnace, sufficient quantity of Air shall be purged using

compressor.

2.3.7 Use appropriate personal protective equipment’s which will be supplied by VSSC


2.3.8 Entering inside hot zone shall be by the contract personnel using proper safety

equipments.


instructions of VSSC Engineers shall be strictly followed.

2.3.10 Place the product safely after visual check and providing appropriate identification.

2.3.11 Clean all the vacuum lines to remove carbon dust/precipitates using dilute NaOH

solution and water.


done by the contractor as per the instruction of VSSC Engineers

2.3.13 The contract personnel have to take at most care in handling delicate instruments

during cleaning.

2.3.14 Take the mass and size of the product dismantled and record it properly in the log

book with product details and proper identifications.




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2.3.17 During each shift of operation mentioned above, e Technical assistants and

Technicians from Contractor’s side shall be present for executing the work.




ANNEXURE - VII

3. PREVENTIVE MAINTENANCE OF FURNACE SYSTEM

Preventive maintenance shall be done for the total furnace system, 4 times a year, each

with 5 days work, ie; once in three months (total 20 days per year).



3.1 Draining and cleaning of water sumps, filling with fresh water

3.2 Draining and cleaning of all vacuum lines, condenser, filters, NaOH tanks etc.

3.3 Cleaning of cooling tower.

3.4 Cleaning of scrubber tank.

3.5 Total cleaning of furnace chamber with necessary repair works by replacing old

graphite felts where ever needed.

3.6 Cleaning of all the pumps.

3.7 Oil changing, filter cleaning etc.

3.8 The work shall be completed within 5 days, employing trained Engineer, Technical

assistants and Technicians from contractor’s side.

3.9 Trouble shooting and maintenance of the furnace and it’s subsystems incase of

any eventuality.

3.10 Contract personnel shall not be allowed to work more than 24 hours continuously.

3.11 Safety of the contract personnel is the sole responsibility of the contractor.

II. ASSISTANCE IN PROCESSING OF CARBON -CARBON COMPOSITE PRODUCTS THROUGH

VACUUM INDUCTION FURNACE (VIF) OF SIZE - Ø2000mm × 2000mm HEIGHT

Introduction: Vacuum Induction Furnace is utilized for processing Carbon-Carbon

composite products at high temperature of the order of 26000C (max). The operation and

maintenance of the furnace need trained Engineers, Technical Assistants, and Technicians.

Following processes and preventive maintenance to be carried out in the furnace:

1. Chemical Vapour Infiltration process using methane gas for making carbon-carbon

composite products

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2. Silicon carbide coating / Infiltration process

3. Graphitization process up to 26000C (max)

4. Preventive maintenance (mechanical systems) of overall furnace system

1. CHEMICAL VAPOUR INFILTRATION PROCESS USING METHANE GAS FOR MAKING CARBON-

CARBON COMPOSITE PRODUCTS:

One cycle of CVI process consists of:



1.2 Operation of Vacuum Induction Furnace for chemical vapor infiltration and related

works as per the process parameters and recipe provided by VSSC.

1.3 Dismantling, unloading of product, soot removal and cleaning.

ANNEXURE - VIII



The followings activities shall be carried out by the contractor and his team under the


1.1.1 Before starting the preparatory works, each & every systems / sub systems shall

be checked thoroughly for its proper and safe working, as per the check list

provided by VSSC Engineers.

1.1.2 Confirm the adequate availability of process gas/inert gas and connect full

cylinders in the gas bay in appropriate manifold for each gas.

1.1.3 Clean the water sump, cooling tower, water filter, water softening plant etc and

fill with adequate quantity of fresh water.

1.1.4 Clean the furnace exhaust line filters thoroughly to remove carbon dust particles

and assemble back.

1.1.5 Identify the products & fixtures needs to be processed in the furnace and record

the details in the Log book.

1.1.6 Note down size/weight and ensure availability of the total quantity of process

gas /inert gas as per the calculations provided by VSSC staff.

1.1.7 Make all arrangements inside the furnace, like Stitching of graphite felt,

thermocouple fixing, connection of gas admission tubes, position of graphite

packing & foils etc.

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1.1.8 Before entering inside the furnace for loading the product, all the activities as

mentioned in the safety procedure provided by VSSC shall be carried out.

1.1.9 Material handling activities like loading of cylinders/fabric/consumables from


1.1.10 Before loading & unloading of product, the over head crane has to be checked

for its smooth & safe working.

1.1.11 Contract personnel shall wear appropriate Personal Protective Equipment

(PPES), which will be supplied by VSSC, whenever needed.

1.1.12 Equipment/tools/consumables needed for the furnace operation and

maintenance shall be supplied by VSSC and the same shall be cleaned properly

and returned after use without any damage.

1.1.13 The contract engineers/supervisors shall have adequate knowledge in handling

delicate devices like flow meters, flow controllers, temperature indicators,

temperature controllers, programmable logic controllers, pressure transducers &

Controllers etc.

1.1.14 The contractor shall provide adequate number of trained contract staffs for

which prior intimations will be given by VSSC engineers concerned.

1.1.15 The contract personnel shall perform their duties after office hours other than

normal working hours whenever it is needed.

1.1.16 During each shift of operation mentioned above Technicians shall be present for

executing the work under the supervision of Engrs/Technical assistants from the

contractor’s side.

1.1.17 The work shall be completed within one day working on three shift basis.

1.1.18 Contract personnel will not be allowed to work more than 24 hours

continuously.


ANNEXURE – IX

1.2 Operation of Vacuum Induction Furnace for chemical vapor infiltration and related

works as per the process parameters and recipe provided by VSSC:

The contractor and his team shall carry out the following activities under the supervision of

VSSC Staff.

1.2.1 Loading the product with appropriate fixture.

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1.2.2 Close the furnace for starting the process with appropriate lid closure for CVI

process.

1.2.3 Regulate the gas flow at the manifold side.

1.2.4 Program the heating cycle in the programmable temperature controller (PTC).

1.2.5 Set the parameters like pressure, differential pressure, process gas flow rate, inert gas

flow rate, etc required for processing as per recipe provided by VSSC.



be verified.



1.2.9 Monitor and record the parameters like pressure, furnace temperature, water inlet

temperature, water outlet temperature, water flow rate, gas flow rate, gas pressure

at manifold side, power, frequency, voltage etc in the respective Log book.

1.2.10 Load appropriate gas cylinder as and when it is required and unload the empty gas

cylinders.

1.2.11 In case of any deviation in the process, inform the Engineer in charge immediately

and shall take appropriate corrective action as suggested by VSSC Engineers.

1.2.12 The contract personnel shall take at most care in handling delicate instruments like

gas flow meters, regulators, water flow meters, pressure controllers etc.

1.2.13 Contractor shall arrange trained Engineers/ Technical Assistants/Technicians needed

for the continuous operation for duration of 10 days (approximately) round the clock

shift.



1.2.15 Contract personnel will not be allowed to work more than 24 hours continuously.


ANNEXURE – X

1.3 Dismantling, unloading of product, soot removal and cleaning:

Contractor and his team shall carry out the following activities under the supervision

of VSSC staff.

1.1.1 Before opening the lid of the furnace, verify the temperature inside the furnace and


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1.1.2 Remove the furnace insulation lid from the equipment safely and place it properly

using the overhead crane.

1.1.3 Remove traces of carbon soot in the hot zone using portable dust collectors

provided by VSSC.

1.1.4 Open the bottom man hole for fresh air entry inside the furnace.

1.1.5 Before entering inside the furnace sufficient quantity of air shall be purged using

compressor

1.1.6 Use appropriate personal protective equipments which will be supplied by VSSC


1.1.7 Enter inside hot zone using safety chair and crane.


instructions of VSSC Engineers shall be strictly followed

1.1.9 Place the component safely away from the furnace at appropriate location.

1.1.10 Clean the vacuum lines to remove carbon dust/soot after dismantling.


done by the contractor.

1.1.12 The contract personnel shall take at most care in handling delicate instruments

during cleaning.

1.1.13 Take the mass and size of the component dismantled and record it properly in the





1.1.16 The contract personnel shall perform their duties after office hours other than normal

working hours whenever it is needed.


executing the work under the supervision of Engineers / Technical Assistants from the

Contractor’s side

1.1.18 The work shall be completed within one day, working on three shift basis.


1.1.20 Safety of the contract personnel lies only with the contractor.

2. SILICON CARBIDE (SIC) COATING / INFILTRATION PROCESS

One cycle of SiC coating/infiltration process consists of

2.4 Health checking of the furnace, preparatory works including cleaning of pipelines

and flushing, assembly and loading of component in the furnace.

2.5 Operation of Vacuum Induction Furnace for Silicon Carbide coating / Infiltration and

related activities.

2.6 Dismantling, unloading of the product and cleaning.

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ANNEXURE – XI

2.4 Health checking of the furnace, preparatory works including cleaning of pipelines and

flushing, assembly and loading of component in the furnace:



2.4.1 The contract personnel shall check each & every systems / sub systems

thoroughly for its proper and safe working as per the check list provided by

VSSC Engineers.

2.4.2 Confirm the adequate availability of process gas/inert gas and connect full

cylinders in the gas manifold for each gas.

2.4.3 Fill cyclo hexane in cyclo hexane tank for the purpose of system flushing.

2.4.4 Flush all the lines coming in the SiC system with cyclo hexane.

2.4.5 Prepare the neutralization solutions and introduce in the system safely.

2.4.6 Fill MTCS from storage tank to service tank.

2.4.7 Safely neutralize and dispose empty drum.

2.4.8 Clean the water sump, cooling tower etc and fill with adequate quantity of

fresh water.

2.4.9 The contractor shall provide adequate number of trained contract staffs for

which prior intimations will be given by VSSC engineers concerned.

2.4.10 Make all arrangement inside the furnace, like thermocouple fixing, position of

graphite packing & foils etc.

2.4.11 Before starting loading the product, all the activities as mentioned in the safety

procedure provided by VSSC, shall be carried out.

2.4.12 Material handling activities like loading of cylinders/fabric /consumables from


2.4.13 Contract personnel shall wear appropriate Personal Protective Equipment

(PPES), which will be supplied by VSSC, whenever needed.

2.4.14 Equipment /tools/consumables needed for the furnace operation and

maintenance shall be supplied by VSSC and the same shall be cleaned

properly and returned after use without any damage.

2.4.15 The contract Engineers / Technical Assistants shall have adequate knowledge

in handling delicate devices like flow meters, flow controllers, temperature

indicators, temperature controllers, programmable Logic controllers, etc.

2.4.16 During each shift of operation mentioned above Technicians shall be present

for executing the work under the supervision of Engineers / Technical Assistants

from the Contractor’s side.


2.4.18 Contract personnel shall not be allowed to work more than 24 hours

continuously.


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ANNEXURE – XII

2.5 Operation of Vacuum Induction Furnace for Silicon Carbide coating / Infiltration and

related activities:

The contractor’s personnel shall carry out the following activities under the


2.5.1 Load the product using appropriate fixture and conduct all checks as per the check

list provided by VSSC.

2.5.2 Close the furnace for starting the process with bottom part closure.

2.5.3 Set and regulate the gas flow.

2.5.4 Program the cycle for the process in HMI panel.





be verified.



2.5.9 Monitor and record the parameters like pressure, furnace temperature, and water

Inlet / outlet temperature, water flow rate, gas flow rate, gas pressure at manifold

side, power, frequency voltage etc in the respective log books.


gas cylinders.



Engineers.




needed for the continuous operation for duration of 10 days (approx) round the

clock shift.





ANNEXURE - XIII

2.6 Dismantling, unloading of the product and cleaning:


VSSC staff.

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2.6.1 Before opening the lid of furnace verify the furnace temperature and make sure that

the temperature is in safe limit.

2.6.2 Before entering inside the furnace, make sure that all the safety checklist have been

verified.

2.6.3 Remove traces of precipitate/impurities in the hot zone using portable dust collector.

2.6.4 Clean the hearth plate to remove traces of impurities.



2.6.6 Entering inside hot zone shall be by the contract personnel using proper safety

equipments.

2.6.7 Proper care shall be taken during unloading of the product along with toolings, and

instructions of VSSC Engineers shall be strictly followed.

2.6.8 Place the product safely after visual check and appropriate identification.

2.6.9 Clean all the vacuum lines to remove carbon dust/precipitates using dilute NaOH

solution and water.


done by the contractor as per the instruction of VSSC Engineers

2.6.11 The contract personnel have to take at most care in handling delicate instruments

during cleaning.

2.6.12 Take the mass and size of the product dismantled and record it properly in the log

book with product details and proper identifications.





executing the work under the supervision of Engineers / Technical Assistants from the

Contractor’s side.

2.6.16 The work shall be completed within one day, working on three shift basis.



3. GRAPHITISATION PROCESS UP TO 2600°C (MAX)

One cycle of graphitization consists of



3.2 Operation of Vacuum Induction Furnace for graphitization process and related

works.

3.3 Dismantling, unloading of product, and cleaning.

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ANNEXURE – XIV



The followings activities shall be carried out by the contractor under the supervision of

VSSC staff.

3.1.1 The contract personnel shall check each & every systems / sub systems thoroughly

for its proper and safe working as per the check list provided by VSSC Engineers.


in the gas bay in appropriate manifold for each gas.

3.1.3 Clean the water sump, cooling tower, water filter, water softening plant etc and fill

with adequate quantity of fresh water.

3.1.4 Clean the furnace exhaust line filters thoroughly to remove carbon dust particles

and assemble back.



3.1.6 The contract personnel shall perform their duties after office hours whenever it is

needed.

3.1.7 Check the pyrometer for its proper working and set it properly.

3.1.8 Make all arrangement inside the furnace, like Stitching of graphite felt,

thermocouple fixing, Connection of gas admission tubes, position of graphite

packing & foils etc.

3.1.9 Before entering inside the furnace, for loading the product all the activities as

mentioned in the safety procedure provided by VSSC, shall be carried out.

3.1.10 Material handling activities like loading of cylinders/fabric /consumables from store

area to the furnace and back shall be carried out.

3.1.11 Before loading & unloading of product, the overhead crane has to be checked for

its smooth & safe working.



3.1.13 Equipment /tools/consumables needed for the furnace operation and maintenance



of 20

3.1.14 The contract Engineers/ Technical Assistants shall have adequate knowledge in

handling delicate devices like flow meters, flow controllers, temperature indicators,

temperature controllers, programmable Logic controllers, pressure transducers &

Controllers etc.

3.1.15 During each shift of operation mentioned above Technicians under the supervision

of Engr/Technical Assistant from contractor side shall be present for executing the

work.




ANNEXURE - XV

3.2 Operation of Vacuum Induction Furnace for graphitization process and related works:

The contractor and has team shall carry out the following activities under the


3.2.1 Load the product with appropriate fixture

3.2.2 Close the furnace for starting the process with appropriate lid closure for

graphitization process.

3.2.3 Regulate the gas flow at the manifold side.

3.2.4 Program the heating cycle for graphitization.




3.2.7 All the requirements like power supply, water supply, gas supply, DG Supply etc.

shall be verified.



3.2.9 Monitor and record the parameters like pressure, furnace temperature, and

water Inlet / outlet temperature, water flow rate, gas flow rate, gas pressure at

manifold side, power, frequency voltage etc in the respective log books.


Gas cylinders.

of 20



Engineers.




needed for the continuous operation for a duration of 9 days (approx) round the

clock shift.





ANNEXURE - XVI

3.3 Dismantling, unloading of product, and cleaning:

Contractor and his team shall carry out the following activities under the supervision

of VSSC staff.

3.3.1 Before opening the lid of the furnace verifies the temperature inside the furnace


3.3.2 Remove the furnace insulation lid from the equipment safely and place it

properly using the overhead crane.]

3.3.3 Remove traces of carbon soot in the hot zone using portable dust collector.

3.3.4 Open the bottom man hole for fresh air entry inside the furnace.

3.3.5 Before entering inside the furnace, sufficient quantity of Air shall be purged using

compressor.



3.3.7 Entering inside hot zone shall be by the contract personnel using safety chair

and crane.

3.3.8 Proper care shall be taken during unloading of the product along with tooling

and instructions of VSSC Engineers shall be strictly followed

3.3.9 Place the product safely away from the furnace at appropriate location.

3.3.10 Clean the vacuum lines to remove carbon dust/soot after dismantling.

of 20

3.3.11 If any minor modification is needed on the furnace insulation, the same has to

be done by the contractor as per the instruction of VSSC Engineers

3.3.12 The contract personnel have to take at most care in handling delicate

instruments during cleaning.

3.3.13 Take the mass and size of the product dismantled and record it properly in the



3.3.15 The contractor shall provide adequate number of contract staffs for which prior

intimations will be given by VSSC engineers concerned.

3.3.16 The contract personnel shall perform their duties after office hours other than


3.3.17 During each shift of operation mentioned above Technicians under the

supervision of Engr/Technical Assistant from Contractor’s side shall be present for

executing the work.




ANNEXURE - XVII

4. PREVENTIVE MAINTENANCE (MECHANICAL SYSTEMS) OF OVERALL FURNACE SYSTEM

Preventive maintenance (mechanical systems) shall be done for the total furnace system, 4

times a year, each with 3 days work, i.e. once in three months a year (total 12 days per

year).

The following activities shall be carried out by the contractor and his team under the


4.1 Draining and cleaning of water sumps, filling with fresh water

4.2 Draining and cleaning of distilled water tank and refilling.

4.3 Cleaning of cooling towers (3 Nos.)

4.4 Cleaning of flame arresters on the top of chimneys.

4.5 Total cleaning of furnace chamber with necessary repair works by replacing old

graphite felts where ever needed.

4.6 Cleaning of all the pumps including diesel pumps.

4.7 Oil changing, filter cleaning etc.

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4.8 The work shall be completed within 3 days, working on three shift basis;

employing trained Engineers / Technical Assistants and Technicians from contractor’s

side on each shift.

4.9 The contract personnel shall perform their duties after office hours other than


4.10 Contract personnel will not be allowed to work more than 24 hours continuously.

4.11 Safety of the contract personnel is the sole responsibility of the contractor.

E-Procurement No. VSSC/AVN-PUR/2016E0412001 Dt. 30.06.2016 and Print Media

Advertisement ref. No. VSSC/P/ADVT/194/2016 Dt. 08.07.2016. E-Tenders are invited for

3 Axis CNC Vertical Machine Centre (7 Items) through our E-procurement site

https://eprocure.isro.gov.in. Tender documents can be downloaded upto

01.08.2016 [11:00 Hrs.], Tender Opening date : 05.08.2016 [11:00 Hrs.].

Only online tenders will be accepted. No manual / Postal / e-mail / fax offers will be

entertained. No manual tender document will be issued. Parties interested to participate in

this e-Tender are required to register themselves as vendors, if not already registered, in our

e-procurement portal https://eprocure.isro.gov.in by downloading plugins and help demos

listed on the home page of the e-procurement link mentioned above to complete the vendor

registration process. They can seek help from help desk 080 6780 7786 also as provided in the

home page of e-procurement portal in case of any problem for registration and subsequent

process. Vendors may please note that without registering in our e-procurement portal, they

will not be able to quote for this e-tender.

Important Notice : Tender shall be opened on the first day of the schedule [ie. 05.08.2016

[11:00 Hrs.]. If the tender could not be opened on the first day due to any technical snag, it

will be opened on the subsequent day as per the schedule. Bidders who are desirous of

attending the tender opening may make arrangements for attending the tender opening at

their cost.

E-Procurement No. VSSC/AVN-PUR/2016E0420501 dt. 05.07.2016 and Print Media

Advertisement ref. No. VSSC/P/ADVT/194/2016 Dt. 08.07.2016. E-Tenders are invited for

CISCO Network Switches and Routers – 3 Types [24 Nos.] through our E-procurement site

https://eprocure.isro.gov.in. Tender documents can be downloaded upto 08.08.2016

[10:00 Hrs.], Tender Opening date : 11.08.2016 [11:00 Hrs.].

Only online tenders will be accepted. No manual / Postal / e-mail / fax offers will be

entertained. No manual tender document will be issued. Parties interested to participate in

this e-Tender are required to register themselves as vendors, if not already registered, in our

e-procurement portal https://eprocure.isro.gov.in by downloading plugins and help demos

listed on the home page of the e-procurement link mentioned above to complete the vendor

registration process. They can seek help from help desk 080 6780 7786 also as provided in the

home page of e-procurement portal in case of any problem for registration and subsequent

process. Vendors may please note that without registering in our e-procurement portal, they

will not be able to quote for this e-tender.

Important Notice : Tender shall be opened on the first day of the schedule [ie. 11.08.2016

[11:00 Hrs.]. If the tender could not be opened on the first day due to any technical snag, it

will be opened on the subsequent day as per the schedule. Bidders who are desirous of

attending the tender opening may make arrangements for attending the tender opening at

their cost.