Dando TERRIER Mk 1 Operating instructions

OPERATING AND MAINTENANCE MANUAL
DANDO TERRIER Mk 1
C/W PERCUSSIVE & 2.2m ROTARY MAST
DANDO DRILLING INTERNATIONAL LTD.
UNIT G, FORD AIRFIELD INDUSTRIAL ESTATE,
FORD, Nr ARUNDEL, WEST SUSSEX,
BN18 0HY, ENGLAND
E-MAIL: [email protected]
WEB SITE: http://www.dando.co.uk
TEL: [phone] FAX: [phone]

SECTION 1
GENERAL

SECTION 1 - GENERAL
1.1 GENERAL SAFETY
As Designers, Manufacturers and Suppliers of Specialised Equipment, Dando
Drilling International Ltd ensure so far as it is reasonable that our products are
safe and without risk to health when properly used.
You are requested to take the necessary steps to ensure that the appropriate
information is made available to all those involved with the proper use of our
products, or to anyone who may work on, purchase, or otherwise acquire such
products for their own use.
1.2 OPERATING AND MAINTENANCE MANUAL
Dando Drilling International Ltd support all new products being supplied to
their customers with a comprehensive Operator Manual which clearly defines
mandatory instructions for the operation, safe use and maintenance of the
products. Further, where proprietary items are incorporated in to products of
Dando Drilling International Ltd, comprehensive Operators Manuals on these
items are also supplied, together with the Operating Manuals etc. on any
vehicle or other carrier supplied as part of a contract.
It is the responsibility of the owners or hirers of such products to ensure that
operators are provided with these Manuals and are suitably instructed
regarding the purpose of these Manuals and safety instructions. In addition,
operators should be suitably and adequately trained in the use of the product.
1.3 CODE OF SAFE DRILLING PRACTICE
It is the responsibility of the owners and hirers of this equipment to ensure
that the operators of the equipment are aware that drilling sites can be
potential hazardous environments, and that safe drilling practice should
always be adhered to.
Dando Drilling International draw your attention to the Code of Safe Drilling
Practice as published by the British Drilling Association, and would
recommend that all operators are fully conversant with all aspects covered by
this publication and take the necessary steps to become B.D.A. Accredited
Drillers. For operators outside the United Kingdom, we would recommend
that their national equivalent to the B.D.A. publication is adhered to.
The Guidance Notes on safety that follow are extracted from the British
Drilling Association’s publication “Code of Safe Drilling Practice”, and Dando
Drilling International would like to acknowledge with thanks their permission
to reproduce this section.

1.4 SAFETY PRECAUTIONS
WARNING. BREATHING DUST IS DANGEROUS TO HEALTH
1) Operate in a well-ventilated place and use appropriate extraction
equipment or a damp cloth to remove dust.
2) Dampen all dust.
3) Dispose of waste in heavy gauge plastic sacks in accordance with
legislative requirements.

1.5 GUIDANCE NOTES ON SAFETY
1.5.1 PERSONNEL
a. Drilling may entail the employment of men inexperienced in this class of
work. Care should therefore be taken to explain and enforce safety
precautions, and to teach good practice in the handling and use of equipment
and plant.
b. No workman should be employed on any work unless he has been adequately
instructed and trained in that work and is competent to do that work without
supervision, or he is working under the instruction and supervision of some
person competent to give instruction in and supervision in the doing of that
work. This is especially important when employing young persons on drilling
sites.
c. Alcohol should not be consumed on the site and persons who have been
drinking should not be allowed on the site.
d. Pranks and horseplay are a common cause of accidents and should be
forcefully discouraged. Safe successful work requires serious attention
and good teamwork.
e. Operators should not lift, carry or move any load which is so heavy as to be
likely to cause injury. When lifting, it is recommended that the person should
stand squarely with a solid footing and should lift the load slowly by
straightening the legs rather than the back.
f. Care should be exercised when handling weights which must be moved with
artificial means, such as pipe used for casing etc.
g. If pipe is to be moved by rolling by hand, this must be done from the ends
and the person must ensure that the hands are kept out of the ends of the
pipe. Whenever possible the pipe should be rolled away from the person
rolling it.
h. In general, care should be exercised whenever lifting something, be it heavy
or light. In the case of lifting and moving heavy weights, chains, ropes and
pipe hooks should be checked to ensure that they are in good condition and
employees should never stand under a raised load.
i. Visitors to the drilling site are in more danger that the operators, and should
be steered clear of operational areas unless the nature of their visit demands
otherwise. If necessary, operations should be suspended until visitors have
been moved to a safer part of the site.
1.5.2. TRAVELLING TO, ON AND FROM DRILLING SITES
a. Vehicles travelling on public highways must comply with the Highway Code,
relevant Road Traffic Acts and with the appropriate Motor Vehicle
Regulations currently in force in the United Kingdom or other E.C. country.

b. Before travelling, checks should be made to all vehicles for road worthiness,
giving special attention to lights, indicators, screen wipers, registration plates,
brakes, brake lights, steering, security of loads, particularly overhanging
loads, tyre pressure and wear and lack of mud before proceeding onto a
public highway.
c. It is important that checks are made of the coupling and/or hitching of the
drilling rig to any towing vehicle.
d. Where required, long vehicle signs, caution or towing boards should be
securely attached.
e. When towing equipment, correct towing speeds, reversing and manoeuvring
procedures should be observed and assistance obtained where necessary.
Due regard should be paid to road conditions and visibility at all times. Care
should be taken when towing in icy conditions as “jack-knifing” can occur.
The safe towing speed should not be exceeded as there is a risk that
“snaking” may suddenly develop, which may cause the trailer to lose a wheel.
f. Consideration should be given to other road users who may become
impatient and take risks - it is advisable to pull into the side occasionally to let
them pass.
g Where wide, long or heavy loads are to be moved it is advisable to have all
lights on for road travel, even in broad daylight.
h. On arrival at the site, ground conditions should be checked before driving in,
and a watch kept for temporary overhead obstructions.
i. If necessary, an assistant should be used to control traffic if safety dictates.
j. Passengers should not be carried on or around the machine.
k. The driver of the vehicle should check for all round visibility before
commencing any manoeuvre, especially reversing. If necessary, an
assistant should be used to signal. The presence of an assistant does not
relieve the driver of his responsibility, so he should constantly check the rear
view in his mirror, and by direct sight.
l. When manoeuvring vehicles, due regard should be paid to soft ground,
potholes, gradients, slippery grass and mud, and overhead cables. Special
care should be taken when crossing dykes with improvised bridges. At all
times, personnel should keep well clear of moving vehicles in case they
overturn. Where winches must be used, a watch should be kept for flying
ground anchors and rope failures.
m. Loading and un-loading the plant should only be carried out on firm level
ground.
n. The vehicle’s driver should act as assistant during loading and un-loading
operations. Signals should be agreed beforehand and standard procedures
followed.

o. When loading or un-loading on a public highway, assistants should be used
to hold back traffic. These men should be responsible to the vehicle driver
only.
p. Where the access to and from the site does not have good visibility in all
directions, traffic leaving the site should be controlled by a person nominated
for that purpose.
q. Vehicles should not reverse out of the drilling site onto a public highway.
1.5.3. DRILLING SITE PREPARATORY AND RESTORATION WORKS
a. It is of greatest importance that a proper site appraisal should be made
before any work is commenced. The results, together with any records of
any underground installations, services, workings, etc., should have been
made available to the drilling contractor who in any event should take all
reasonable steps to obtain them.
b. A plan of the site showing the location of hazards to site preparatory work
and to drilling operations should be prepared before any equipment is taken
on site.
c. The drilling contractor should always act with competent engineering advice
and assess the general hazards which may arise during construction and
drilling due to the nature of the ground, the existence of high water, gas or oil
pressures in the strata, surface and underground installations and services.
d. The site should be inspected before rig entry to find a safe approach route to
the proposed drilling position. Some guidance may be required for winching
or lowering rigs on steep slopes and in setting up in marshy or other soft
areas.
e. It should be ascertained that the load bearing quality of the proposed site is
adequate for safe working conditions. Hazardous situations such as old rock
fill, unstable material, surface soils on sloping rock surfaces, under
dangerous banks or quarry sides and on quarry edges should be avoided.
f. A clear access to and from the site should be provided with good visibility in
all directions. If this is not possible, traffic leaving the site should be
controlled by a person nominated for that purpose.
g. The working area should be suitably prepared and where necessary levelled,
surfaced and drained. Means should be provided to trap any escape of
petrol, diesel fuel or oil which might leak into the water courses, fields or
public drains, before it leaves the site.
h. The site should be adequately fenced and warning notices posted, with
separate fencing and warning notices being provided for any mud or slurry
pits.

i. Where working platforms are required to support men, equipment and/or
materials, the platform should be properly constructed. It should be of
adequate dimensions, and if over 2 metres above ground, should have guard
rails and tow boards so placed as to prevent falls of persons or articles from
the platform. Similar guard rails and tow boards may be considered
desirable on platforms constructed at lesser heights in some circumstances.
The platform construction and stability should be checked weekly for defects.
1.5.4 SETTING UP
a. The site must be kept in a well organised tidy state and clear of all debris and
extraneous material.
b. It is preferable for acoustic barriers to be constructed of non-flammable
material.
c. It should be ensured that all relevant machine guards have been installed
before starting up any machine.
d. Bulk stocks of fuel, oil and gas cylinders should be stored in a designated
compound remote from the immediate working area.
e. Rods, Casings etc. should be neatly stacked, preferably on appropriate racks
and maintained in a clean condition.
f. Threads and connectors should be regularly cleaned and greased, and
preferably protected with thread protectors.
g. Tools and materials should be laid out according to requirements and in
order of use.
1.5.5 DRILLING OPERATIONS - GENERAL
a. Drilling may entail the employment of some personnel inexperienced in this
class of work. In such circumstances, particular care should be taken to
explain and enforce safety precautions, and teach practice in the handling
and use of equipment. It is important that safe working systems of work are
adhered to by all personnel.
b. Inexperienced men should always remain under expert supervision.
c. At the commencement of each shift the incoming crew should make certain
that the equipment is in a useable and safe condition. Unsafe conditions and
any significant change in operating conditions should be reported in the
driller’s log book and any action taken thereon should also be logged.
d. Each operation must have its set routine, each team member knowing
exactly what part he is to play.
e. Under no circumstances must a rig be operated by one man.

f. High noise level areas should be identified and hearing protection worn
where necessary.
g. Where engine noise or other sounds prohibit verbal communication, a clear
set of signals which are clearly understood and known by each team member
should be used. This will also apply when ear defenders are worn.
h. It should be ensured that the winch operator has a clear view of men
operating equipment at all times.
1.5.6 DRILLING OPERATIONS - ROTARY
a. The foundation for the drill rig should be solid and level and capable of
withstanding the full thrust to be applied.
b. Where the rig is positioned above ground level an adequate set of steps with
handrails should be provided to give access to the working platform.
c. The equipment should always be operated in a safe manner and in
accordance with the manufacturer’s instructions.
d. The rig should never be left unattended whilst drilling.
e. Relief valves should never be set above the manufacturer’s recommended
setting.
f. Care should be taken that operators keep hands and feet away from rods or
other tubulars passing through the guide table, and not to have hands or feet
in positions where they could get stuck.
g. When working on or near rods or tubulars, the driller should ensure that the
rotary drive mechanism is securely disengaged, and any hoisting winch is
securely engaged.
h. When hand tools, such as pipe tongs, wrenches, etc. are braced against the
drill frame and used against the drill rotary power as break-out tools, such
tools should be secured to the drill frame.
i. Hand wrenches should only be operated between chest and shoulder level.
j. Wrenches should never be applied to rods or casing which are rotating.
k. Great care should be taken when wrenches are used to loosen stuck rods. If
the wrench slips out of the hands, the spring of the rods could throw the
wrench with considerable force.
l. Hands should never be placed on wrenches where they can get trapped
between wrench and rig.
m. Ensure that wrenches are removed from rods before starting machines.
n. When breaking out rods, casing, etc. personnel should always stand in a safe
position in case rods drop or turn.

o. The jaws of pipe wrenches should be kept in good order and replaced when
necessary.
p. Pipe or other material should never be used to extend the handle of any type
of wrench or tong to obtain greater leverage.
q. When handling pipe or casing, personnel should not take hold of the male
thread end. They should watch out for sharp burrs on rods and casing, and
discard the rod or file these down before proceeding.
r. Threads of rods or casing should be well coated with suitable grease before
coupling. Operators must use a suitable tool to apply grease, never their
hands.
s. The water swivel hose should be secured to the mast.
t. Personnel should stand clear when using a drill with water swivel and water
hose, since should the water swivel spindle seize and wrap round the rod,
the operator could be pulled into the rotating and drive mechanism.
u. Attempts should not be made to remove water swivel when machine is in
motion.
v. Hoisting plugs and swivels should be kept well lubricated, since an
improperly made up hoisting plug can unscrew when handling rods.
w. Pull should not be exerted simultaneously on hoist and hydraulics since when
the hydraulic lift is released, overload on the hoist rope will occur.
x. Hoist ropes should be examined daily for broken strands and replaced when
necessary.
y. The correct socket should always be used on hoist ropes. Bulldog grips
should never be used as a substitute.
z. When hoisting rods, personnel should keep clear of the cable plugs and rods
until the tension is released on the cable, since the backlash of the cable by
the release of tension can cause the plug to spin rapidly.
aa. Care must be taken in lowering the hoisting plug to the helper. The helper
must be careful that his hands are not caught between the hoisting plug and
the exposed part of the swivel head when breaking out drill rods.
bb. The hoisting plug should always be fully screwed into the rods before
commencing hoisting or lowering, and prior to hoisting should be tightened in
the last rod by means of wrenches.
cc. The steel wire cable should always be wound evenly on the drum.
dd. When necessary to straighten the cable on the hoist drum, the driller should
remain at the hoist controls, and the helper wearing gloves, and from a safe
distance should guide the cable onto the drum.

ee. The hoist should not be used to lift with less than three full wraps on the
drum.
ff. When moving drill rods and casing, gloves should be worn and the working
platform clear of grease, mud or ice.
gg. Drill rods or corebarrels should never be left balanced across or leaning onto
the rig.
hh. The drill rig, pump, or any other ancillary equipment should never be
operated with any of the machinery guards removed.
ii. Replace control gauges immediately damage is noted.
jj. Do not adjust engine revolutions above manufacturer’s set recommendations
and replace any automatic shut-down mechanism immediately damage is
noted.
kk. Replace hydraulic hoses/fittings as soon as damage is noted or suspected
with the correct designated hose type.
ll. Drill masts should not be loaded above the manufacturer’s SWL rating.
1.5.7 DRILLING AND THE USE OF COMPRESSED AIR
a. Compressors should be set up on level ground so that internal lubrication is
not adversely affected and proper loading is put on bearings.
b. Compressors should preferably be sited up-wind from the rig in order to
prevent dust contamination. However, when associated with the drilling of
large diameter holes siting should be such as to also avoid exhaust fumes
entering the borehole.
c. The parking brake should be applied or the wheels chocked in order to
prevent vibration moving the vehicle.
d. Internal combustion engines should be fitted with spark arrestors.
e. A daily check should be made on oil, fuel and water levels and on engine and
compressor air cleaner oil levels.
f. A daily check should be made of all compressed air hoses, clips and
couplings.
g. Compressors should not be operated with the engine covers open or with the
fuel caps removed.
h. Condensate should be drained from the compressor, oil cooler and control
filter, a check made that all controls are in neutral gear, and that all
connected equipment is turned off before starting up.

i. Both the compressor and drilling rig should be equipped with air pressure
gauges. Before commencing operations, a check should be made that these
are operative, the readings should be noted, and the main air valve checked
that it is in proper working order and can be used easily and quickly. This
valve should be of the plug cock type.
j. Hoses and fittings designed for different working pressures should be clearly
distinguished, preferably by colour coding, and should not be used at higher
pressures than that designated.
k. Hoses used for pressures in excess of 18 Bar (250p.s.i.) should be secured
to restraining anchors at each end and at suitable intervals.
l. When working above ground level air hoses should be anchored to prevent
them falling.
m. Air receivers should be marked with the safe working FA.1961 Pressure, and
be fitted with a pressure gauge and a safety valve designated to operate if
that pressure is exceeded.
n. Air receivers should be fitted with suitable drainage facilities and should be
drained off daily or more frequently if there is a high humidity level.
o. Air receivers should be thoroughly cleaned and examined at least once in
every period of twenty-six months by a competent person and a report on the
results of every such examination and test should be recorded.
p. In freezing conditions, all air exhausts and air lines being blown out should be
directed well away from workmen.
q. When air-flush drilling an extractor or hood should preferably be used at the
top of the borehole to direct air and dust away from the operators. Where
this is not practicable consideration should be given to the introduction of
foam into the air line and where this is not possible the drilling crew should
wear suitable masks and goggles.
r. Compressed air should not be used for odd jobs such as removing liquid
from, or cleaning out storage drums, nor for blowing dust from the rig unless
the air line is fitted with the correct end fitments and valves.
s. Compressed air should not be used to blow dust from wearing apparel whilst
being worn since this can cause serious injury or death by embolism in the
blood system.
t. The compressed air supply should never be cut off by kinking or bending
hoses.

1.5.8 PLANT MAINTENANCE
a. Plant, machinery and structures should be inspected at regular intervals in
accordance with the manufacturer’s recommendations. In the case of plant
which is subject to corrosion, steps should be taken to effect repairs before
corrosion reaches dangerous limits.
b. A planned preventative maintenance system covering shift, daily, weekly and
periodic times should be established for the different types of machine used.
This should include the inspection of all pulleys, drum surfaces and ropes,
and should stipulate their regular cleaning and lubrication. The system should
include a three-part sequence of inspection, thorough examination and
testing. Results of each stage are to be recorded and signed.
c. Cleaning, repair, maintenance, oiling or greasing of machines or the topping
up of fuel tanks should not be carried out whilst a machine is operating.
d. If inspection involves the running of a petrol or diesel engine in an enclosed
space, all doors and windows to the workshop should be opened and even
then, the engine should only be run intermittently to avoid a dangerous build-
up of fumes.
e. All plant should be kept clean by the regular removal of mud and dirt and of
snow and ice in winter, if applicable.
f. When major dismantling of components is necessary, the correct lifting
equipment should always be used and it should be ensured that struts and
chocks are strategically placed as the process continues.
g. The ignition key should always be removed, and a notice placed in such a
prominent position that it cannot be missed, if it is necessary to work
underneath a machine, or to leave it in an incomplete unsafe state.
h. Moving parts of machinery are to be guarded where possible and such
guards should be in position when machinery is in normal operation. Guards
should not be removed except as required for maintenance purposes, in
which case the machine should be immobilised.
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 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.

b. Such training should include not only basic safety precautions, but also a
thorough understanding of the correct use of all plant, equipment and tools.
c. In addition, knowledge should be given of the forces of both energy and
mass which the crew control through the medium of the drill rig.
d. The prime concept of this training is to teach each crew member to do his
own job efficiently and safely, and to so work with the other members of the
crew that good and safe team work becomes instinctive.
e. This not only results in steady and safe progress, but secures higher
production.
f. All training whatever the size of the organisation, should be formally
programmed throughout the number of stages required by the personnel
concerned. Each step in the training module or syllabus should be monitored
by a fully trained instructor, and duly recorded towards the eventual
certification of the trained crew member upon completion of the course
concerned.
g. Training should be so presented that the stimulation of personal interest and
the known attainment of craft and skill achievement is a main aim and result.
Such training therefore should be initiated and encouraged by both
management and supervisory staff.
h. Emphasis should be made on the value of efficient teamwork towards the
goal of high and safe production.
i. It cannot be too strongly stressed that the operatives’ involvement and
outlook is dependent upon the quality and support of the employer.
j. The responsibility for all aspects of site safety rest with all levels of
management.
1.5.11 WELFARE AND PERSONAL PROTECTION
a. The Health and Safety at Work Act 1974 (United Kingdom) requires
every employee, while at work, to take reasonable care for the health
and safety of himself and of other persons who may be affected by his
acts or omissions at work. In this regard, personal and site safety and
hygiene are most important.
b. Adequate and suitable protective clothing should be provided for any person
employed who, due to the nature of his work, is required to continue working
in the open air during rain, snow, sleet or hail.
c. Adequate accommodation for personnel to take shelter during bad weather,
for the storage, drying and changing of clothing and for taking of meals
should be available. Such accommodation should include the facility for
boiling water, heating food and the provision of washing facilities to permit
personal hygiene. Personnel should be encouraged to wash before
partaking of food.

d. Washing and kitchen waste water should be discharged into a pit or sump
dug into the ground remote from ditches and water courses.
e. Empty tin cans, bottles, plastic containers, drums and scrap metal, wire rope
etc., should be placed in containers for transport to recognised waste
disposal sites.
f. Suitably ventilated chemical toilets housed to provide privacy, should be
available. These should be regularly serviced and contents disposed of in
accordance with manufacturer’s instructions. Personnel should be
encouraged to wash after using these facilities.
g. Potable/drinking water should be available and containers clearly marked as
such to distinguish from non-potable/non-drinkable water.
h. Oil saturated clothing is a fire risk, and also a health risk in that it irritates the
skin. They should be changed as soon as possible.
i. Advice should be sought from the local water authority and their medical
officer of health prior to working in sewers or on waste disposal sites. When
working in these situations rubbing of the nose or mouth with the hands
should be avoided. On completion of the work, hands and forearms should
be thoroughly washed with soap and clean water with an added disinfectant.
Any clothing or boots that have become contaminated should be washed,
cleaned or disinfected. Any cut, scratch or abrasion should be cleaned,
treated with antiseptic and completely covered until quite healed.
j. The possibility of existing excavations transmitting bacteria carrying liquids
into a working area should not be overlooked.
k. It is advisable that drilling crews should receive regular anti-tetanus
injections, and always carry their anti-tetanus injection card with them.
l. Relatively harmless materials can cause irritation leading to more harmful
effects by repeated or prolonged exposure so that every effort should be
made to avoid inhaling dust, fumes or smoke. Should such conditions have to
be endured as a temporary measure, suitable protective equipment should
be used.
m. Similarly, prolonged or repeated contact with the skin of certain substances,
chemicals, oils or other fluids can be harmful. Under these circumstances,
protective gloves/clothing should be worn, and/or barrier creams used. Any
such skin contacts should be washed before eating food, and this should not
be consumed in the working or contaminated area.
n. Personnel should be fully protected against any hazard likely to be incurred
in carrying out their work. Protective clothing and equipment should therefore
be issued, maintained in good order and replaced when necessary.

o. Rig personnel should wear only close-fitting clothing, preferably distinctly
coloured overalls. Clothing should be kept clean by frequent washing, and
each crew member should have a clean change of work clothes on location
at all times. Particular care should be taken to ensure that drawstrings to
hoods or other items of clothing are not left dangling so as to become
entangled in any moving parts.
p. If overalls are not worn, long-sleeved shirts with tails tucked in will provide
protection against sunburn, insect bites, scratches, hazardous chemicals and
flash burns.
q. Safety helmets must be worn by members of the drilling crew and visitors to
the site. Safety boots or safety wellingtons should also be worn.
r. When working on or adjacent to the public highway, a top coat, jerkin or
waistcoat, with fluorescent markings must be worn at all times.
s. The use of gloves whenever practicable is recommended. Gloves prevent
minor injuries when employees are handling rough materials or skin irritants.
Only short, tight fitting gloves should be worn. Gauntlets may become caught
in the machinery and workers may be pulled into moving machinery if they
wear them.
t. Hairnets should be worn by persons with dangerously long hair. Loose
clothing, i.e. trailing scarves, ties etc. should be avoided, especially when
working near rotating machinery.
u. Rig personnel should never wear finger rings or bracelets while working.
v. Eye protection is of the utmost importance. An eye injury, no matter how
slight, should receive prompt medical attention. Even a slight eye injury may
lead to serious complications.
w. The correct eye protection should be provided and should be maintained in
good condition on each drilling site. Employees should wear approved safety
glasses or goggles when chipping, grinding, scraping, buffing, breaking or
cutting any metal or material that involves a flying chip hazard.
x. Operators who wear contact lenses should wear eye protection and should
always be aware of the problems posed by contact lenses when attempting
prompt emergency treatment following the introduction of foreign material
into the eye.
y. Splash proof chemical goggles or face-shields should be used when handling
potentially hazardous or injurious chemical liquids, powders or vapours such
as cement, chemicals, chemical cleaning solutions, creosoted material,
molten metal, asphalt or bitumastic compounds. Goggles also should be
worn by persons near operations which require the use of safety goggles by
the operator.

1.5.12 WIRE ROPES - GENERAL SAFETY AND MAINTENANCE
a. Regular inspection of ropes in service is essential if high standards of safety
are to be ensured, and the relevant test certificate must be obtained and
available.
b. All running ropes in continuous service should be visually inspected once
every working day by an authorised person.
c. A thorough inspection of all ropes in use should be made at least once a
month and a full written, dated and signed report of rope condition kept on file
and readily available.
d. Any deterioration resulting in appreciable loss of original strength, such as
described below, should be carefully noted and the rope should not be used
if any of the following situations are present:
i) Reduction of rope diameter below nominal diameter due to loss of core
support, internal or external corrosion or wear of outside wires.
ii) In any length of diameters, the total number of visible broken wires
exceeds five percent of the total number of wires in the rope.
iii) Corroded or broken wires at end-connections.
iv) Corroded, cracked, bent, worn or improperly applied end-connections.
v) Severe kinking, crushing, cutting or under stranding.
vi) Heavy wear and/or broken wires may occur in sections in contact with
equaliser sheaves, or other sheaves where rope travel is limited, or with
saddles. Particular care should be taken to inspect ropes at these
locations.
vii) All rope that has been idle for a period of a month or more due to
shutdown should be given a thorough inspection before it is placed in
service. This inspection should be for all types of deterioration and
should be performed by an authorised person whose approval should be
required before further use of the rope.
viii) Particular care should be taken in the inspection of non-rotation rope.
ix) Wire rope removed from service due to defects should be plainly marked
or identified as being unfit for further use on load carrying devices.
e. Upon receipt of wire ropes, whether they arrive in coil form or on reels, it is
advisable to examine, and if necessary remove, the outer protective
wrapping. This may have become wet during transit and, if left on the rope
local corrosion will appear in course of time. Ropes should be stored in a dry
atmosphere and preferably off the floor, on well seasoned timber.