On February 3, 2016 at 12:56 UTC two Russian cosmonauts Yuri Malenchenko and Sergey Volkov began their spacewalk. The cosmonauts collected residue samples from the Pirs hatch and a window on the Zvezda command module before removing an experiment package known as EXPOSE-R, which exposed various biological and biochemical materials to the space environment. Malenchenko and Volkov then moved up to the “Poisk” module where they swapped out another set of space exposure samples and reoriented a thruster plume impingement monitor. They also attached another space exposure experiment before moving to the “Zarya” module and installing two handrails. The final task of the spacewalk was testing an applicator similar in appearance to a packing tape dispenser. Using a test panel, the cosmonauts applied specially coated tape intended to test thin films that could prove useful reconditioning exterior panels. The cosmonauts spent 4 hours and 43 minutes outside the International Space Station. This was the 193rd spacewalk devoted to station assembly and maintenance since construction began in 1998. It was the 6th EVA for Yuri Malenchenko and the 4th EVA for Sergey Volkov.