MARCH 2014: Peoples Republic of China

From News, By admin, Update November 17, 2015 at 12:36 am

ALBA OS entered into a contract to supply experienced Drilling Equipment specialist engineer to carry out detailed witness and reporting of the following factory acceptance tests ?–

1) NOV manufactured Drawworks at the NOV facility in Houston USA.

2) NOV manufactured TDS-8 Top Drive in the NOV facility in California USA.

3) NOV manufactured PRS-8i unit, in the NOV facility in California


This attendance survey will consist of three stages, as follows

1) To review the documentation package provided by NOV for the Drawworks and Top Drive are correct as per Industry Standards.

2) To review the proposed complete FAT testing procedures are correct, and the equipment being used for the testing is compliant with industry standards and fully calibrated by a reputable third party inspection company, prior to any testing commencing.

3) Witness the testing and ensure all three units are “fit for purpose” as per Industry Standards and the OEM’s procedures as a minimum. After the testing is complete, compile all the relevant information and complete the detailed main reports for the client.


Key areas to concentrate on the Drawworks FAT specifically but; not limited to the following-

  • Visual external condition prior to FAT commencing
  • Pull test the makeup cathead to 7,000 lbs. straight line pull
  • Pull Test the break out cathead to 14,000 lbs. straight line pull
  • Proper lubricants for the application have been installed correctly
  • Request single line pull of drawworks in facility if possible
  • Carry out an external visual inspection of the drawworks. ?
  • Look for any damaged or missing protective covers. ?
  • Loose or missing securing bolts and dog clamps. ?
  • Pay particular attention to any oil, air or water leaks. ?
  • Check the level of the sump oil. ?
  • Check that the drawworks is securely mounted and that the mounting skid is in good condition. ?
  • Record the serial number.
  • Test the Crown-O-Matic and other similar devices fitted and properly reset after each test.
  • Ensure that an auxiliary (Eddy Current, Hydromatic or reverse current) braking system is installed and in a good working/operational condition.
  • Check condition of drum drill line clamp.
  • Check condition and operation of blocking (safety) system. (This system prevents shifting of the gears when the drawworks is still turning and the neutral brake not energized)
  • If no auxiliary brake is installed then mention in the report, with relevant comments.
  • Clarify if the manufacturer states that the brake is suitable for use in zone 1 and zone 2 when a temperature or a flow monitoring device is installed and operational.


Key areas to concentrate on the Top Drive FAT specifically but; not limited to the following-

  • Check that all dies for the grabber and torque unit are properly locked with the original die locking pins or bolts.
  • Check all gauges for proper scale and operation: Torque gauge. (MdaN. and Ft lbs.). Make-up torque setting gauge. (MdaN & Ftlbs). RPM speed indicator.
  • Check compensation cylinders to the bail mountings for tightness.
  • Check if the mountings for the derrick loops are mounted far enough from the corner, to insure that the hoses cannot catch under the guide rails, but are far enough back to clear tong lines, tugger lines and stabbing boards.
  • Check and ensure that the Link Tilt Intermediate Stops are well secured and that the springs are in good condition.
  • Check that the IBOP crank and roller bracket assembly bolts are safety wired or that lock tabs have been installed.
  • Actuate the IBOP valve. Verify that the stroke adjustment is correct and check if the indicator light on the driller’s console is on when the valve is closed.
  • Check that the torque arrestor and hanger shaft pins are retained with nuts and cotter pins.
  • Check that adequate service loop brackets are made.
  • Check the oil level in the gear box with the motor turned off.
  • Check the oil flow indicator for oil going to the lower quill shaft bearing.
  • Check guide rail for straightness.
  • Check that adequate rail stops are installed.
  • Check if a retrofit dust filter is installed in the closed loop system.
  • Check that the space heaters are wired to be ON whenever the TDS is OFF.
  • Check if water detection and indication system is operating. (If applicable).
  • Check oil pump loss pressure switch and functioning of indicator system.
  • Check operating of TDS purge system.
  • Check top drive console purge air system and purge alarm
  • Check top drive transfer panel purge system and the purge air alarms system.
  • Check the torque wrench and verify that it follows the make-up and break-out cycles. (15 sec. max. cycle time).
  • Turn on the hydraulic and air power and check for leaks.
  • Actuate link tilt and check operation. Be sure that it operates smoothly and that the elevators reach the mouse hole.
  • Check the motor brake for proper operation. (Mud can get into the brake and cause problems).
  • Check blower loss light and alarm function.
  • Has a counterbalance relief valve kit been installed?
  • Observe and confirm operation of torque wrench.
  • Check that NDT inspection of all load bearing areas have been carried out according NOV’s recommendations.
  • Check loss of purge air alarm system and automatic shutdown (if provided)
  • Check the oil flow to the take-up bearing. [Varco top drives with integrated swivel] (Orifice to be fitted with 500 micron filter).
  • Check automatic shut-down, start interlock and the pre-purge period.
  • Check that calibration of all instruments, in particular those displaying the following; torque/ pressure and amps are carried out.
  • Check that all electrical components are class 1 – zone 2 approved
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