div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader043fdocumentsusreader043viewer20220218025b64518c7f8b9af5448d21f9html5page1jpg target=_blank img data-url=document-drill-stem-valves-are-critical-rig-items-and-form-part-of-the-routine-bop-equipmenthtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: · Drill stem valves are critical rig items and form part of the routine BOP equipment test cycle Additionally to minimise rig downtime it is recommended that Top Drive loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader043fdocumentsusreader043viewer20220218025b64518c7f8b9af5448d21f9html5thumbnails1jpg width=140 height=200 adivdiv