Dando DUKE STAGE IV, Operating And Maintenance Manual, Page: 18 / 400

i. Lifting machines and tackle should be inspected and tested at set intervals
and certified for the maximum permissible working loads, and these loads
should not be exceeded. Following any major repair, they should be re-
certified before being returned into service. The owner/operator should be
aware of current legislation in force in their own country and comply with all
regulations regarding re-testing of equipment.
j. Electrical installations should be effectively earthed.
k. Electrically operated hand tools, together with leads and earth wires, should
be inspected at regular intervals to ensure that they have been maintained in
good order, and such inspections should be recorded.
l. Trailing cables, except for hand-lamps and small portable tools should be of
a standard equal to BS 708. Pliable armoured cables are preferred.
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 liq
uid 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.
1.5.8 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c. Surface standpipe should be withdrawn or cut at least one metre below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.
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