Nottingham Contemporary art gallery - home to the Walker's Hockney painting for the next few months

Here's a behind-the-scenes look at one of the aspects of the work that our staff are involved in, courtesy of handling and transport technician Paula Frew. This week Paula travelled to Nottingham as a courier to supervise the installation of one of the Walker's most popular paintings, which has gone out on loan. Here's what she got up to, in her own words:

"Monday morning at 7.30am I was on the train travelling to Nottingham to act as a courier for the installation of the Walker's David Hockney painting  'Peter getting out of Nick’s pool' by David Hockney, which is on loan to the Nottingham Contemporary art gallery for their Hockney exhibition. The painting had travelled ahead of me, having been collected from the Walker on the Friday by Momart, who handle and transport art works nationally and internationally.

Twenty minutes walk from the train station, Nottingham Contemporary art gallery stands on a corner like the raised prow of a ship looming in front of a sandstone gothic church, the opposing architectural styles complimenting the space.

Entering the gallery, construction work was underway installing interior features. I signed in and was introduced to the staff who escorted me into the exhibition space. Here was a quiet eclectic mix of organised disciplines consisting of painting conservators, curators a registrar and exhibition technicians.

I instructed the technicians on the safe removal procedure of the crated work. The work was carefully removed and placed on foam blocks and leant temporarily against the wall.

Painting conservators checked the painting against the relevant paperwork and images that I had with me from National Museums Liverpool's painting conservator David Crombie, who had supplied a full report. Content with the report and the painting's condition, the conservators allowed the technicians to continue with its installation.

I observed the technicians measure a space on the wall and install the original lifting brackets. Lifting brackets are used to support this painting, as a pretty chunky frame encompasses the canvas, giving it a weight of 105kgs.

A small lifting machine (SWL 227kgs) was used to elevate the painting onto the brackets. Once installed onto the brackets, the fittings attached to the back of the painting called ‘Oz- clips’ (nothing to do with a wizard’s hair!) were used to finally secure the painting to the wall, installation professionally completed.

Visitors to the Walker Art Gallery hoping to see a David Hockney painting over the next few months won't be disappointed as the Tate have kindly loaned 'Mr and Mrs Clark and Percy', which is going on display in gallery 15 for the duration of the Hockney exhibition in Nottingham."

As regular visitors will realise, there are always small changes taking place within our galleries, even in the 'permanent' displays, as objects do occasionally get removed for loans or conservation treatment. An example is the painting 'Elaine' painted by Sophie Anderson, which is going to be included in the exhibition 'The Rise of Women Artists' at the Walker from 23 October 2009. Framing conservator Roy Irlam is using this opportunity to address particular areas of the painting's framework, as access to this painting has been difficult due to its high position on the gallery wall. You can see photos of the de-installation in our Moving stories Flickr set. Handling and transport technician Paula Frew explains just how this large painting was safely removed from display below.

Installing 'Daniel in the Lion's Den' in the Walker

"The handling and transport team use specialised equipment for paintings at this height which include a block and tackle system used to elevate and lower paintings. Each block and tackle section is equipped to take a safe working load of 250kg which are suspended from a lifting strap (SWL 1000kgs) which is attached to a load bearing picture rail.

Another piece of equipment which is an old favourite of the team's goes by the fanciful name of 'Airwolf'. It's a gas operated hydraulic lift that enables technicians to access the heights needed to reach the galleries picture rails.

The most recent addition to the team's repertoire of equipment is an electrical hydraulic lift embellished with the title of 'Leonardo'. This machine takes the weight of one person and can be operated at its base or by the operator in the caged platform area at various heights to move around the gallery area. Unfortunately it doesn't go as high as the 'Airwolf' and is therefore restricted.

The Mobile Elevated Towers named 'Pulpit Towers' are mobile platforms that have replaced ladders due to the new ladder regulations and adhere to the new safety rulings.

The large maroon coloured machine is called the 'Sumner lift'. This machine has been specifically adapted to take a 500kg weight, having counterbalanced weights in the enclosed basket. The machine can access heavy paintings at particular heights on its forks. It works on a ratchet and geared system operated manually, preferably by someone who has eaten a lot of spinach!

The equipment has to be condition checked before use which takes time, so the team started at 7.30am to make headway before the Walker opened to the public at 10am. Once it opened we barricaded off half of the gallery space rather than closing it completely to the public. We found that the visitors were more interested in our operation than they were in the collections!

Before taking down 'Elaine' we removed the painting beneath it 'The Expulsion of Adam and Eve from the Garden of Eden' using the Sumner lift machine. The team then set up the block and tackle for 'Elaine' and removed it safely.

The painting 'Daniel in the Lion's Den' by Riviere has recently returned to the Walker after going out on loan to the British Museum for their 'Babylon' exhibition. We installed this painting in place of 'Elaine' using the block and tackle system, then re-installed 'The Expulsion of Adam and Eve...' beneath it and re-opened the remaining gallery space."