<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt"><div>Hydraulic Systems</div><div><span style="font-size: 13px;"> The Hydraulic system is to be built to GL rules, Machinery Installations (1-1-2), section 14. standard.</span></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 13px;"> All pipes which are passing through the pressure hull have to be at least to "pipe class 1 " standard.</span></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 13px; background-color:
transparent;"> Hydraulic fluid is selected so that if water mixes with it, it doesn't seriously impair the system.</span></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 13px; background-color: transparent;"> Hydraulic systems require a closed circuit safety valve to prevent over-pressurization.</span></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 13px; background-color: transparent;"> They require filters & provision made for venting & de-watering the system.</span></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica
Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 13px; background-color: transparent;"> Hydraulic fluid tanks are to be fitted with level indicators.</span></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 13px; background-color: transparent;"> Hydraulic lines shouldn't be routed close to oxygen systems</span></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 13px; background-color: transparent;"> All the necessary indicating devices are to be fitted.</span></div><div style="color: rgb(0, 0, 0);
font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 18px;">Oxygen Systems</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 18px;"> </span><span style="font-size: 13px;">Any level of O2 of more than 25% is treated as an O2 line.</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal; font-size: 13px;"><span style="font-size: 13px;"> Everything needs to be cleaned & degreased prior to assembly.</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande',
sans-serif; background-color: transparent; font-style: normal; font-size: 13px;"><span style="font-size: 13px;"> In piping systems containing O2, only spindle valves are allowed. Ball valves are allowed as emergency</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal; font-size: 13px;"><span style="font-size: 13px;">shut off valves if they are marked as such & secured against unintentional use.</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal; font-size: 13px;"><span style="font-size: 13px;"> Where possible the O2 pressure is to be reduced at the bottle.</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica,
Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal; font-size: 13px;"><span style="font-size: 13px;"> </span><span style="background-color: transparent;">High pressure O2 lines shouldn't be routed through accommodation spaces or engine rooms etc.</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal; font-size: 13px;"><span style="font-size: 13px;"> For O2 lines with operating pressures above 40 bar (580psi), high alloyed Cr-Ni-steels with a content of</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal; font-size: 13px;"><span style="font-size: 13px;">Cr & Ni of together at least 22%, or Cr-Si-steels with a Cr content
of at least 22% are to be used.</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal; font-size: 13px;"><span style="font-size: 13px;"> Spindle valves for pipes wider than 15mm & operating at more than 40 bar, have to have their spindle gear </span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal; font-size: 13px;"><span style="font-size: 13px;">outside the gas space.</span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal; font-size: 13px;"><span style="font-size: 13px;">Alan</span></div><div style="color: rgb(0, 0, 0); font-size: 13px;
font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 13px; background-color: transparent;"> </span></div><div style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span style="font-size: 13px;"> </span></div></div></body></html>