Owned and operated as a joint venture by a consortium of Canadian universities via a contribution through the National Research Council Canada Propriété d’un consortium d’universités canadiennes, géré en co-entreprise à partir d’une contribution administrée par le Conseil national de recherches Canada Canada’s national laboratory for particle and nuclear physics Laboratoire national canadien pour la recherche en physique nucléaire et en physique des particules Accelerating Science for Canada Un accélérateur de la démarche scientifique canadienne Repurposing experimental areas What do you save and what do you remove? Doug Preddy | Beamlines Group Leader | TRIUMF ARW 2013– Melbourne, April 14 – 19, 2013

Challenges When experimental areas have outlived their usefulness we reuse the space for something more modern. Do we have to remove everything that was there before? What do we save and what do we dispose of? How do we make these decisions?

New projects in old areas New projects at TRIUMF have required repurposing two experimental areas. An electron linac, part of the new ARIEL project, has been started in the former proton hall. The Ultra Cold Neutron project will be started in the former M11 and M13 areas in January 2014.

Proton Hall, M11 and M13

Proton hall.

New Ariel facility

Proton hall clean out challenges Significant amount of low- level waste. Minimal storage space at TRIUMF Cost of shipments to a storage facility

Reuse of existing equipment Electro- magnets Shielding (both concrete and steel) Vacuum pumps Beamline valves Water flow meters Some diagnostic equipment

Removal of services Most existing services were removed from the Proton hall. Compressed air Closed loop cooling water DC power cables to magnets Control cables Diagnostic equipment read-back cables AC power distribution (lights, plugs and power to equipment)

What did we reuse? Telephone services AC power panels (transformers and circuit breaker panels) Emergency lights Alignment monuments Some safety lock out infrastructure

Services that passed through There were a number of services and cables that passed through the old proton hall. Network trunk lines Gate access and cameras Control room to office building interconnections Control trunk lines Helium gas recovery lines

What did we dispose of AC distribution Water and air lines (copper tube) DC cables Beamline stands Cable trays (unless they were standard lengths) Old transformer based power supplies

Why dispose of equipment Obsolete equipment Radiation damage Cable/connector insulation suspect Some of the experimental equipment was unique to the old facility

MANAGING RADIOACTIVE WASTE The most challenging part of the process was dealing with disposing a large amount of low- level active waste Everything leaving the area was checked for removable contamination Attempts were made to decontaminate items as well as separate active components from non- active ones

What did we learn? Plan ahead Packaging requirements Saving equipment or saving resources? Dedicated resources

The next project - UCN Next January the Ultra Cold Neutron project will start to be installed. Before the installation the old experimental area will have to be dismantled. There will also be a number of changes to the primary beamline out of the cyclotron

Experimental areas removed for UCN

Ultra Cold Neutron facility (UCN)

Applying lessons learnt The repurposing of the proton hall has taught us a number of very important lessons Planning Assessment Storage and disposal plans

Conclusions  Repurposing areas for new installations will happen as facilities age.  There are lots of challenges to decide what stays and what goes.  The design of new facilities have to fit in the areas that are available. This will require compromises to the ideal design of the new facility.  Prior planning of the repurposing is imperative to a smooth transition from an old facility into a new one.

Owned and operated as a joint venture by a consortium of Canadian universities via a contribution through the National Research Council Canada Propriété d’un consortium d’universités canadiennes, géré en co-entreprise à partir d’une contribution administrée par le Conseil national de recherches Canada Canada’s national laboratory for particle and nuclear physics Laboratoire national canadien pour la recherche en physique nucléaire et en physique des particules Thank you! Merci TRIUMF: Alberta | British Columbia | Calgary Carleton | Guelph | Manitoba | McMaster Montréal | Northern British Columbia | Queen’s Regina | Saint Mary’s | Simon Fraser | Toronto Victoria | Winnipeg | York