Download - For more information, please contact 14/12/2010 EN/CV/DC Technical specification IT-3684 by Elena Perez Rodriguez.

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Technical specification IT-3684

by Elena Perez Rodriguez

Thermosiphon project 2

• Introduction• Scope of the tender• General conditions for tendering and contracting• Technical requirements• Design • Assembly• Factory tests• Delivery and installation at CERN • Commissioning • Maintenance • Quality assurance• Safety• Annexes• Conclusion

CONTENTS

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Introduction• This presentation will go through the technical

specifications for the chiller system.

• These documents have been sent to all the qualified bidders after the market survey 3684.

• Questions will be answered at the end of the presentation.

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CHILLER UNIT(S)

BRINE

Scope of the tender

4

Primary water

Chiller and brine : design, selection & purchase of components, refrigerants for chiller, construction, skids, installation, connection and commissioning

Thermosiphon condenser and piping

Spares(1 year & 10000 h)

Electrical design, functional analysis, electrical/control components, cabling and electrical/control cabinets

Documentation and labeling

Terminal blocks, PLC and software (UNICOS)

Fluid for the brine


General conditions for tendering

Pre-tender discussions

• Bidders conference - Questions and answers sent to all bidders

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Technical and design

• P&ID, P-h diagram• Dimensions and weights, general assembly

drawings.• Electrical power, compress air and water supply

needed. • MSDS for refrigerants and TDS for compressors,

pumps and heat exchangers.• Technical questionnaire.• Reliability and risk analysis.

Organization

• Work site organisation, preliminary schedule, project team.

• Working methods, protection means and test methods for commissioning.

Purchase

• Price List.• Tender

form.

Documents to be sent with the tender

Refer to the purchase documents for more information


Adjudication of the contract• Finance committee (16

march)

Detailed design• Functional analysis• Detailed design• Planning• CERN approval of design

Delivery• Delivery of the

skids at CERN.

InstallationCommissioning • Commissioning on the

by-pass.• Acceptance of the

equipment.

Delivery schedule

March 2011

April 2011

September 2011

October 2011

December 2011


Technical requirements• Chiller units

– Two circuits in cascade (high and low temperature).

– Refrigerant to be chosen by contractor.

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Operation regimes Nominal operation

Warm operation

Cooling power in the Thermosiphon condenser 180 kW 50 kW

Temperature at the inlet of the Thermosiphon condenser -70°C -20°C

Temperature at the outlet of the Thermosiphon condenser -65°C -15°C

Maximum pressure drop 4 bar 4 bar

• Brine circuit– Mono-phase liquid

C6F14.

– Materials shall be compatible with fluorocarbons.


Chiller configuration I

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C3F8 condenser 180 kW-70 °C

liquidtank

USA15cavern

Surface

C6F1

4 br

ine

circ

uit

Primary water 27°C

CHILLER 350% power for nominal operation

ATLAS IDDetector

UX15cavern

Back-up50 kW-20 °C Brine circuit

Redundant pumps




Power supply : configuration I

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Standard power supply

Diesel power supply

30 kW

45 kW

45 kW

25 kW

45 + 45 kW

45 kW

45 kW


P&I for the configuration I

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Thermosiphon project 1114/12/2010

Chiller configuration II

liquidtank

USA15cavern

Surface

C6F1

4 br

ine

circ

uit

Primary water 27°C

CHILLER 4100% power for nominal operationRedundant

CHILLER 5For emergency situation

ATLAS IDDetector

UX15cavern

C3F8 condenser 180 kW-70 °C

Back-up50 kW-20 °C Brine circuit

Redundant pumps

CHILLER 6For emergency situation


Power supply : configuration II

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Standard power supply

Diesel power supply

25 kW

180 kW

20 kW

20 kW

30 kW


P&I for the configuration II

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DesignOperation and reliability

• Power regulation– 20 ÷ 100%

• Temperature regulation– 20°C ÷ -70°C– Precision ± 1 K

• Compressor– MTBF > 40,000 h– MTTR < 10 h

• Chiller system – MTBF > 20,000 h

Other

• Seismic requirements

• Sound level• Reliability and risk analysis

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Integration

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Integration responsible:

Alexander Bitadze

To be approved by CERN’s safety team.Visit on site in the afternoon.


Assembly

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• All the components shall be pre-assembled in metallic frames (skids)– Maximum dimensions : 14m x 2.5 m x 3 m– 15 tons

• Control and electrical cabinets will also be pre-assembled– Space will be leaved for the PLC and the terminal blocks provided by

CERN.

• The insulation shall be protected with an stainless steel cover.


Factory tests

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In the contractor premises

Welding inspection

100% visual inspection

10% X-rays

Pressure and leak tests

Compliant with PED

Electrical mappingThe procedures and

reports of all the tests shall be supplied


Delivery, installation and commissioning at CERN

Delivery and installation• Transport and handling of

the system to CERN Point 1 (Switzerland)

• The installation shall be performed by the contractor.

• The contractor staff shall have the adequate training. CERN will provide its domain-specific training.

Commissioning• Done in collaboration

between CERN and the supplier.

• CERN will provide the pre-tested program (according to the functional analysis).

• CERN will provide a dummy load for the tests phase.

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Maintenance• Maintenance– Preventive maintenance plan and spare parts list

provided by the contractor.– The Preventive Maintenance Plan shall be done

during nominal operation at full power

The chiller units shall be electrically independent including instrumentation

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Quality assurance• Documentation general

– Documentation in English or French.

– In a computer readable and editable form

• Labeling– The components shall be

identified with labels.• Technical documentation

– Templates for: Technical dossier (STA), Functional analysis, spare parts and installed parts list.

– Preventive Maintenance Plan shall also be provided

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Description Format

2D drawings AUTOCAD

3D drawings CATIA

Electrical drawings Ms Visio/ Tracelec /AUTOCAD

Other documents Ms Word / Ms Excel / Ms Project


Safety

Rules and regulations

Can be consulted in the web

CERNInternational and national standards

Other documents

Host states

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https://safety-rules.web.cern.ch/safetyrules/


AnnexesHydraulic

• 1. Basic P&ID• 2. Technical

prescriptions for piping and accessories

• 3. C6F14 technical characteristics and properties.

• 4. Technical requirements for the brine circuit.

Electricity,

cont

rol an

d regula

tion

• 5. Control and Regulation

• 6. Instrumen tation

• 7. Electricity

Templates

• 8. Installed parts template

• 9. Spare parts list template

• 10. Purchase technical specification (STA) template.

• 11. Technical Dossier template.

Othe

r

• 12. Agenda for the bidders’ conference.

• 13. Price list

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Conclusions• An overview of the specifications for the chiller

has been shown.

• More details can be found in the technical documents.

• The bidders are required to price the different options for the two configurations in the price list.

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Thank you for

your attention

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Any questions ?