Dando TERRIER Mk 1, Operating And Maintenance Manual, Page: 16 / 276

m. When high pressure grease guns are used, protective gloves should always
be worn and care taken to avoid injecting grease under the skin.
n. Hoses used for steam cleaning should be of the type made for steam service.
The metal nozzle should always be securely clamped to the hose and
maintained in serviceable condition.
o. A flammable liquid within the classification of Class ‘A’ or Class ‘B’ petroleum
should not be used for cleaning purposes, except in very special
circumstances, and then by written permission only.
p. Loose boards and materials not in use should be removed from the derrick
floor.
q. Steps and guard rails, where applicable, should be maintained in good
condition. If it is necessary to remove them temporarily during installation of
the machinery, they should be replaced without delay when finished.
r. To eliminate slipping hazards, drilling rig floors, etc. should be kept as free of
mud and oil as practicable. Better footing is provided if the floor is washed
while the next stand of pipe is being picked up. Non-skid materials are useful
in some areas to prevent slipping.
1.5.9 SITE ABANDONMENT
a. Every uncompleted borehole should be fenced or temporarily capped in a
safe manner when the rig has moved off and until the hole is finally capped.
b. Unless a borehole is required to be kept open for some specific purpose, it
should be infilled, consolidated and capped in such a manner that there will
be no subsequent depression at ground surface due to settlement of the infill
material.
c. Surface standpipe should be withdrawn or cut at least one metre below
ground level prior to infilling the borehole.
d. Capping pads should be placed at least one metre below ground level.
e. Mud and slurry pits should remain adequately fenced and signposted until
emptied, backfilled and consolidated. Any impervious membrane should be
removed prior to restoration.
f. The site should be left in a safe, clean and tidy state, with all gates and
fences left as found.
1.5.10 TRAINING
a. The most important factor of all on site safety is the full education and
practical technical training of all drill crew members in all aspects of drilling
and associated operations.