Acceptance criteria, Materials, Acceptance criteria, Materials, Methods and Techniques for cooling Methods and Techniques for cooling

plant constructionplant construction

DCP WP4 status3 March 2010

3 March 2010

WP4 work breakdown structureWP4 work breakdown structureWP4 Notes Who

4.1 Acceptance Criteria

4.1.1 Leak tightness

4.1.1.1 Leak requirements

4.1.1.2 Leak search procedures

4.1.1.3 Leak detection instrumentation

4.1.2 Cleanliness

4.1.2.1Collection of requirements for purchase (degreases, no poweder, caps…)

4.1.2.2 Collection of techniques for clean operation/mounting

4.1.2.3market survey and test of different filtering techniques/products

4.1.2.4 Cleanliness measurements methods

? 4.1.3 Risk Analysis

4.1.3.1 Radiation protection

4.1.3.2 ALARA approach analysis

4.1.3.3 Radiation specification (Nuclear installations)

4.1.4 Performances

4.1.4.1 Test procedure: what to test, how and when

4.1.4.2Needed equipments/ instrumentation for performance check

? 4.1.4.4 Quality Assurance

Acceptance Criteria + Material, Methods and techniques for cooling plant construction

Eng 2 +EN/CV

In common with WP1 Eng 2

Collection of existing experience (PH-BE-EN)

Eng 2 + Chem

4.2 Component database

4.2.1 Specifications for PFC installations

4.2.1.1 PFC compatible material list

valves

pumps

….

4.2.2 Specifications for CO2 installations

4.2.2.1 CO2 compatible material list

valves

pumps

….

? 4.2.3 Cryogenic specifications (?)

? 4.2.3.1 Cryogenic compatible material list (?)

4.3 Material database

4.3.1 Compatibility criteria (chemical, …)

4.3.2 Materials compatible with PFC

4.3.3 Materials compatible with CO2

? 4.3.4 Materials vs material compatibility (?)

4.4 Technologies database (synergies - duplication with other WPs)

4.4.1 Welding

4.4.2 Soldering

4.4.3 Epoxy - adhesives

4.4.4 Thermal contact material in WP2 ?

Eng 2 + CV?+MME?

Collection of results from previous test and

list/ implementation of new ones (check for

materials never tested but common in hydraulic components, supplier

database, list of installed equipments)

EN/CV?

3 March 2010

WP4 work breakdown structureWP4 work breakdown structure

Leak tightnessLeak tightness

Studies on different leak search procedures and instrumentation

• Bibliography search for standards & studies done in refrigeration and vacuum technology

• Market survey on instrumentation available and filed of application

• Test set up to calibrate liquid vs gas leaks (testing with gas for guaranteeing liquid leak tightness)

Work is on going both at CERN and at Cracow University of Technology

https://espace.cern.ch/project-DCP-WP4/default.aspx

3 March 2010

Leak tightnessLeak tightness

Methods for leak measurements @ CERN• Pressure drop with reference volume: new set-up being built (expected by

May 2010, PH-DT+CMS)• Inficon mass spectrometer: new calibration for fluorocarbon on CMS

instrument, contacts with supplier for further gas/liquid calibration http://www.inficon.com/download/en/Ecotec%20E3000%20eng%20kiba22e1-d%20(0608).pdf (CV & CMS)

• Adixen N2/H2 sniffer: plans for testing effects of H2 on joints http://www.adixen.com/adixen_avt/download/docs/prod/doc1prod77.pdf?nocache=1267586128 (CMS & PH-DT)

• He in vacuum mode (PH-DT)• Ultrasound leak detector under evaluation in CMS

3 March 2010

Leak tightnessLeak tightness

Test benches for leak measurements @ CERN• Test bench for liquid vs gas leak test: E. Anttila set up being refurbished

(https://espace.cern.ch/project-DCP-WP4/Shared%20Documents/Papers/he-pf5060.pdf)• New calibrated leak being produced: few sizes for “leak repair” set-up,

smaller sizes using gas chromatography columns

3 March 2010