Farr HD8625 - Extreme Cold Weather Operation Procedures

Technical Manual
hD8625 8-
5
/
8
” 35K Tong
2.25
Breaking A Connection (Continued)
n) Aligntheopeningintherotarygearwiththemouthofthetongoncethejawsarefree.Openthetongdoorandguidethetong
awayfromthestring,andusetheliftcylindercontroltolowerittothedrillfloorifdesired.
IllustratIon 2.H.11: lowerIng tong usIng lIft CylInDer Control
RIG PERSONNEL MUST STABILIZE THE TONG AS IT IS LOWERED TO THE DRILL FLOOR
o) Useyourrig’sstandardpipehandlingprocedurestoremoveandrackthefreedtubingstand.
p) Repeatsteps“e”through“p”asmanytimesasnecessarytobreakoutandun-threadthedesirednumberofconnections.
H. EXTREME COLD WEATHER OPERATION PROCEDURES
1) Consultthepowerunitengineoperator’smanualforallcoldweatheroperatingproceduresandprecautions.
2) Selectgearandbearinglubricantsthatarecompatiblewithexpectedclimaticconditions.
3) Selecthydraulicfluidthatiscompatiblewithexpectedclimaticconditions.
4) Allowhydraulicfluidtocirculateforapproximately20minutesafterstartingthepowerunit,priortoactivatingthebypassvalve
toallowfluidtocirculatetotong.Ifthepowerunitisequippedwithanoiltemperaturegauge,ensurethatthefluidhasreached
operatingtemperatureasspecifiedbyhydraulicfluiddatasheet.
5) Allowforadequatedryingofmoisture(priortolubricating)whencleaningtongpartsincoldweather.
seTup & operaTion