DISCIPLINE PROCEDURE
OFFSHORE DRILLING SAFETY CASE
Revisions Summary
Date Rev. Description
Of revision Prepared
Checked Approved
22/01/10 00 Issued for Approval B. Lasha John Reed Uglesic Damir - Romano (DAM) Bergonzi -
09/07/11 01 Issued for updating HSEN Giovanni Mineo
Uglesic Damir Francesco
Baldoni
INDEX
1. IDENTIFYINGDATAANDWORKPLACESLOCATION 7
1.1 DESCRIPTION OF THE PACKAGED RIG 7
2. ACTIVITIES AND ORGANIZATIONAL STRUCTURE 8
2.1 DESCRIPTION OF THE DRILLING ACTIVITY 8
2.2 IDENTIFICATION AND DESCRIPTION OF THE WORKPLACES 9 2.3 DIFFERENT JOB POSITIONS ON THE DRILLING RIG 10
2.3.1 MASTER 10
2.3.2 DRILLING SUPERINTENDENT 11
2.3.3 VESSEL MAINTENANCE SUPERVISOR 12
2.3.4 SAFETY OFFICER 13 2.3.5 TOOLPUSHER 14 2.3.6 DRILLER 15 2.3.7 ASSISTANT DRILLER 16 2.3.8 DERRICK MAN 17 2.3.9 FLOOR MAN 18 2.3.10 ROUSTABOUT 19 2.3.11 CHIEF MECHANIC 20 2.3.12 Motorman 21 2.3.13 Welder 22 2.3.14 CHIEF ELECTRICIAN 23 2.3.15 ELECTRICIAN 24 2.3.16 CRANE OPERATOR 25 2.3.17 MEDIC 26 2.3.18 RADIO OPERATOR 27 2.3.19 STOREKEEPER 28
3. METHODS OF RISKS ANALYSIS AND ASSESSMENT 29
3.1 CRITERIA ADOPTED FOR RISKS ANALYSIS 29
3.2. RISK MATRIX FOR THE ANALYSIS OF THE CRITICAL STATE 30
3.3. DRILLING ACTIVITY RISKS ANALYSIS 32
3.3.1 PICK UP DRILL COLLAR 33
3.3.2 PICK UP DRILL PIPES 34
3.3.3 PREPARE CASING 35
3.3.4 PICK UP CASING 36
3.3.5 PICK UP EQUIPMENT 37
3.3.6 HANDLE BHA 38
3.3.7 HANDLE DRILL PIPES 39
3.3.8 USE TONGS 40
3.3.9 USE SLIPS 41
3.3.10 USE POWER TONGS 42
3.3.11 WORK AT MONKEY BOARD 43
3.3.12 WORK AT STABBING BOARD 44
3.3.13 MAN RIDING 45
3.3.14 MAINTAINING MUD PUMPS 46
3.3.15 WORK WITH SAND LINE 47
3.3.16 MIX CHEMICALS 48
3.3.17 CHANGE SHAKER SCREENS 49
3.3.18 CLEANING MUD TANKS 50
3.3.19 MEASURE MUD PROPERTIES 51
3.3.20 JARRING 52
3.3.21 FISHING 53
3.3.22 MIX AND PUMP LCM 54
3.3.23 MU CASING SHOE /FLOAT 55
3.3.24 MAKE UP CASING 56
3.3.25 CIRCULATE CASING 57
3.3.27 MIX AND PUMP CEMENT 59
3.3.28 SET SLIP AND SEAL ASS. Y 60
3.3.29 WORK IN CELLAR DECK OR SUBSTRUCTURE 61
3.3.30 INSTALL CASING HEAD HOUSING 62
3.3.31 INSTALL BOP 63
3.3.32 TEST BOP 64
3.3.33 LEAK OFF TESTING 65
3.3.34 STAB KELLY COCK /GRAY VALVE 66
3.3.35 MIX AND PUMP KILL MUD 67
3.3.36 HANDLE RFT SAMPLES 68
3.3.37 RIG UP FOR LOGGING 69
3.3.38 WIRELINE LOGGING 70
3.3.39 LOGGING WITH DRILL PIPES 71
3.3.40 STRIPPING OVER LOGGING CABLE 72
3.3.41 CORE RECOVERY 73 3.3.42 SIDEWALL CORE GUN 74 3.3.43 TEST WELL 75 3.3.44 RUN COMPLETION 76 3.3.45 PERFORM ACID JOB 77 3.3.46 DISPLACE WELL 78 3.3.47 GRAVEL PACKING 79
3.3.48 PULL OUT OLD COMPLETION 80
3.3.49 STIMULATED WELL 81
3.3.50 MILLING 82
3.3.51 CUT TUBULAR 83
3.3.52 SQUEEZE CEMENT 84
3.3.53 CUT AND REMOVE CASING 85
3.3.54 TOP DRIVE OPERATIONS 86
3.3.55 RIG SKIDDING 87
3.3.57 TRANSFER OF PERSONNEL BY BASKET 88
3.3.58 SHIPMENT AND DISCHARGE FROM SUPPLY VESSEL 89
3.3.59 SHIPMENT AND DISCHARGE OF LIQUIDS AND DUST 90
HAZARD SHEETS
Number Title Page
1 Oil and gas at surface 92
2 Diesel oil 93 3 Fuel oil 94 4 Cutting samples 95 5 Core samples 96 6 Reservoir samples 97 7 Hydrogen sulphide (H2S) 98 8 Caustic soda 99 9 Cement additives 100 10 Cement 101 11 Chemicals 102 12 Paint 103 13 Hydrochloric acid 104
14 Chemical cutters (bromine trifluoride) 105
15 Exhaust fumes 106
16 Chiksan lines 107
17 Pressure testing 108
18 Pumping at high pressure 109
19 Compressed air 110
20 Koomey unit 111
21 BOP control lines 112
22 Mud pump suction dampeners 113
23 Wash gun 114
24 Drill pipes, collars and casing on pipe rack 115
25 Crane 116
26 Crane 117
27 Air winch 118
28 Equipment in the derrick 119
29 Lifting and carrying 120
30 Radioactive equipment 121
31 Explosives 122
32 Liquid nitrogen 123
33 Hot surfaces / hot materials 124
34 Noise 125
35 Heat 126
36 Dust and fragments 127
37 Electrical storms 128 38 Sunlight 129 39 Fire sources 130 40 Fire sources 131 41 Combustible materials 132 42 Poisoned food 133 43 Contaminated water 134 44 Dangerous waste 135
45 Alcohol and drugs 136
46 Oil and grease 137
47 Doors and hatches 138
48 Arc welding equipment 139
49 Gas cutting / welding equipment 140
50 Rotating equipment 141
51 Gas bottles 142
52 Hammer 143
54 Cheater bar 145
55 Spanners 146
56 Hand tools 147
57 Moving heavy equipment 148
58 Grinders 149
59 Needle guns 150
60 Drawwork 151
61 Rotary table 152
62 Kelly 153
63 Wireline / sandline cables 154
64 Pipe tongs 155
65 Power tongs 156
66 Slips 157
67 Elevators 158
68 Shale shakers 159
69 Electrical logging cable 160
70 Batteries 161 71 Drilling line 162 72 Hydraulic equipment 163 73 Grit blasting 164 74 Working at height 165 75 Ladders 166
76 Entry enclosed spaces 167
77 BOP and cellar area 168
78 Slippery / untidy surfaces 169
79 Pits 170 80 Electricity 171 81 Visitors 172 82 Poor lighting 173 83 No standard equipment 174 84 Simultaneous operations 175 85 Stored energy 176 86 Swabbing 177 87 Mud losses 178
88 Insufficient mud gradient 179
89 Shallow gas 180
1. IDENTIFYING DATA AND WORK PLACES LOCATION 1.1 DESCRIPTION OF THE PACKAGED RIG
The drilling Rig consists in a mast with a crown block on the top used for the transmission and the support of the ropes which, thanks to the travelling block, transmit the vertical motion to the drilling string (a set of drill pipes, drill collars, bit and any other tool descended into the well). The mast consists in a structure of elements joined by broaching or of telescopic type.
At a determined height, the mast supports the monkey board which consists in a work foot board for the operator who, during the well- running and pulling operations, hooks and releases the stands (set of three pipes) from the elevator. To the monkey board are fixed fingers which serve as guides and as retainer for the vertical stands, when these are rested on the skid of the drilling floor.
The mast is Rigged up to a substructure made up of strong steel trusses.
The aim of the substructure is to create a free space , of sufficient height and width, under the drilling floor, to allow the arrangement (settling) of the blow out preventers (B.O.P.).
The rotatory motion, by means of which the bit drills the ground, is given (supplied) by the Top Drive.
The Top Drive consists in an electric or hydraulic engine, which, supported by the rotary hook, runs along apposite races fixed to the mast and sets (impresses) the rotatory motion to the drilling string.
The connection among the pump standpipes and the swivel assembly is realised with a rotary hose, of proper length, which offers the possibility to maintain the rotary string in movement, while the mud circulates (runs) in the well.
The TDS is supported by the travelling block thanks to a strong hook.
A wire line (drilling line), with an end fixed to the substructure of the mast, passes through the blocks of the crown block and the travelling block and then winds itself up on the draw work drum.
The spinning of the drawwork drum causes the movement of the travelling block and therefore of the string.
The drawwork is the machine which performs the functions of letting descend and of drawing up the pipes and hoses used during the drilling activity and the covering of the hole.
The Rig is supplied with 3 mud pumps with pressure and capacity sufficient for the mud circulation.
Thanks to a system of suction lines, the pumps are connected to the mud pits and, through an assembly of high pressure standpipes, to the swivel assembly, in order to introduce mud into the drilling string. The mud, as soon as it returns on the surface, passes on (shale) shakers where it leaves the cuttings incorporated during the well drilling and then, through a ditch, it returns in the suction pit.
The generating sets are placed at a safety distance from the drilling mast and from the pumps.
The equipment of an offshore jackup drilling Rig is completed by:
• Centrifugal pumps;
• Electric-agitators;
• Shale shakers;
• Blow out control equipment;
• Pipes rack;
• Chemicals rack;
• Living quarter with offices, accommodations, mess room, laundry, toilets, etc.;
• Lightning system;
• Mud circuit and pits;
• Compressors;
• Fuel and lubricants tanks;
• Control room;
• Electrical and mechanic workshop;
• Store area
• Pedestal cranes;
• Engines room.
2. ACTIVITIES AND ORGANIZATIONAL STRUCTURE
2.1 DESCRIPTION OF THE DRILLING ACTIVITY
Exploration and production indicate the execution of a hole which, through the various ground layers, allows to reach either the prearranged (pre-established) depth, where the pool is supposed to be, or the already determined pay zone.
In order to carry out the above mentioned hole, it is necessary to have a drilling Rig which, through a mast, a draw work, engines and pumps, allows the bit to rotate (to spin) and to penetrate into the ground.
Connected drilling pipes long 9 Mt. approx. are added to the bit and allow the same to reach the desired depth.
Into the pipes is pumped the mud which has the duty to offset the eventual rock pressure, to avoid caving of the hole walls, to lubricate the bit and to bring the ground cuttings grinded by the same on surface.
As the bit has to be periodically substituted because of wear, in order to bring it back on surface it is necessary to pull out the pipes already used and to stock them vertically in an apposite pipe rack.
After having substituted the bit, the opposite operation is carried out and the pipes are lowered to bring the bit back to the previous depth of work.
The joining and the breaking-off of the above mentioned pipes take place using particular keys called rotary tongs, kept hanging (suspended) from the mast by lines and counterbalances, to which a twisting couple is impressed through a line activated (set in action) by the drawwork.
Considering the remarkable weight of the pipes, in order to support and move them, a mast with a descending travelling block, movable through a system of lines, is Rigged up along the internal axle.
The spinning of the bit is the result of the action impressed by Top Drive.
The mud circulation into the pipes till the bit and its following ascent on surface through the annular space (well-pipes) is carried out through apposite pumps.
The energy necessary for the lift, the spinning of the pipes and the mud circulation is supplied by generating sets.
The main operative phases (stages) of the drilling activity are: Drilling activity
It consists in impressing spinning and weight to a bit, to which connected drilling pipes are gradually added, till the reaching (achievement) of the desired depth.
Operation
It consists in two phases: pulling and running.
Pulling consists in recovering the drilling pipes and drill collars (one stand each time) and in
stocking them in raking board in order to pull out the bit for its substitution, or for other operations.
Running is the opposite of the pulling phase and consists in bringing the bit to the previous
achieved depth, or in descending particular tools in the well. At the end of the bit run , the drilling activity is resumed.
Tubing and cementing activity
Occasional activity prescribed by the drilling program prepared by the Operator.
This phase is realised to cover the hole and to protect it from landslides and shrinks. Technically it is carried out descending pipes with a diameter inferior to the hole, with a technique similar to that used for the running, operating with a single pipe each time.
At the end of the tubing the annular space between the hole and the pipe is partially or completely filled with cement slurry.
These operations are carried out in co-operation with other contractor firms co-ordinated by the holder of the concession.
Work Over
The wells, after a certain period of exploitation, need some maintenance operations called “Work Over”.
These operations consist in the well cleaning (servicing), through the substitution of the production horizon packer and of the string of production tubing as well as in interventions to improve the production.
2.2 IDENTIFICATION AND DESCRIPTION OF THE WORKPLACES
Drilling Floor It is the workplace where the drilling equipment and machines (drawwork,
rotary tong, rotary table) are located and where the drilling activities (drilling, pulling and running operations, tubing) are carried out
Monkey Board and Casing
Stabbing Board It is the workplace on the drilling mast where, the derrick man carries out the
movement of the tubular material, settling it and/or pulling it out from the finger board. The Casing stabbing board deck is the workplace where the derrick man carries out the operations for the casing and tubing running.
Substructure It is a structure of support of the drilling mast.
Cellar Deck It is a deck allowing the acces to well head.
Pipe Rack It is a structure where the tubular material is stored and stocked in an horizontal
position and is prepared and measured in order to be run into the well and/or to be recovered from the same.
Mud Pits They are pits which contain the mud that must be pumped into the well and the
mud that, after coming out from the well and passing on the (shale)shaker to be cleared from cuttings, returns in cycle.
Shale Shakers They are the machinery used to treat the mud coming out from the well thus eliminating drilling cuttings
Mixing Areas They are areas where the mud mixing is carried out through silos or by pouring
the content of the chemicals in sacks in an apposite mixing funnel.
Engines Area It is an area where are located the engines that produce the energy necessary
for the Rig operating.
P.C.R. They are switch boards for the distribution of the electric energy to the drilling
Rig.
Mechanic/Electric Workshop It is a room with bench, drill and column mounted grinding machine, electric portable tools, manual tools. Outside the welding area there is the equipment for the oxyacetylene and electric welding.
Change Rooms Services
Recreation They are rooms where the personnel wardrobes, the toilets and the chafing
dish oven are located.
Office It is a work office for the Drilling Superintendent and Company Representative
and contains the writing desk, a computer, the cellular telephone and the general Intercommunication system (call).
2.3 DIFFERENT JOB POSITIONS ON THE DRILLING RIG
2.3.1 MASTER
The Master is responsible for:
• Having full authority as defined in the Flag State’s Maritime Law;
• Having the overriding authority and the responsibility to make decisions with respect to safety and pollution
prevention and to request the Company’s assistance when necessary;
• Co-ordinating the safety of the rig in any circumstances. In particular should a hazardous situation,
accident, emergency or evacuation, abandon rig situation arise, he will coordinate all activities and decide what action will be taken;
• Implementing and managing the Company’s Health & Safety & Environmental policies onboard the rig;
• Co-operating with the Drilling Superintendent to ensure that all work scope activities are carried out in a
manner consistent with Safety & Quality procedures and practices;
• Ensuring that all the required safety and emergency drills are carried out as required by Company;
• Ensuring that all fire-fighting and lifesaving equipment onboard are at all times in the condition required by
the regulations;
• Ensuring that all weekly safety meetings, fire and lifeboat drills are held, and that training is gives in the
mode of operation and use of all lifesaving and safety equipment onboard, including the precautions to be taken in different situations;
REPORTING SUPERIOR: Drilling Operation Manager,.Operation Manager
• Planning all maritime crew rotations during operations and stand-by;
• Co-operating with the Drilling Superintendent to direct marine crew and drilling personnel in emergency
situations;
• Providing for the monitoring and control of all personnel embarking/disembarking the rig and maintaining a
list of personnel onboard;
• Planning and executing mooring and unmooring activities;
• Ensuring the rig’s stability ;
• Ensuring regular supervision of the following operations change in ballast, change in trim, bunkering,
• Attending the official rig’s documents file, keeping himself informed about the national and international
legislation, which regulates their validity;
• Co-operating with the Drilling Superintendent for the periodical review and maintenance of the Safety
Management System and other rig documentation;
• Supporting the Drilling Superintendent on the supervision that all rules and regulations, in specific those
refereed on safety on job site, are respected;
• Supporting the Drilling Superintendent during audits carried out on board by Saipem Departments or Third
Parties.
2.3.2 DRILLING SUPERINTENDENT
He assure the right and cheap execution of the drillings, according to the drilling and completion programs he received as well as the eventual changes, always with respect for the contractual regulations and following the directives and instructions received from the hierarchical position and / or from the Company representatives (Client / Operator), with particular attention to:
• Determining the drilling executive program, together with his superior and / or with the Company
technicians, on the basis of the general program provided by the Company for the right execution of the drilling with respect for the contractual regulations;
• Taking care of giving the instructions about the drilling to the Toolpusher and Drillers;
• Taking care of the control of the drilling state / performance;
• Programming the control of the machinery and safety equipment, disposing the execution of the
maintenance and repairing that can be carried out with the well instruments;
• Superintending the technical execution of special operations.
He take care to co-ordinate all the activities concerning the skidding of the Rig on the basis of the general instructions of his superior.
He assure the interpretation, the integration and the observance of the established safety regulations and, in particular, he take care to organise emergency drills, as well as periodical safety meetings.
2.3.3 VESSEL MAINTENANCE SUPERVISOR
To ensure the planned and extraordinary maintenance in order to guarantee the proper and efficient working of all equipments during the operations. He is delegated by the Master on the proper management of warehouse from a logistic and cost saving point of view.
The Vessel Maintenance Supervisor is responsible for:
• To direct all the Chief Mechanics, Mechanics, Motor-men, Electronics, Electricians and Storekeepers;
• Planning with Master and Drilling Superintendent recommendations for periodical interventions on equipment;
• Co-operating with the Master and Drilling Superintendent to ensure that the technical maintenance of the Rig and the equipment on board, adhering to the scheduled maintenance of the Rig equipment, in accordance with classifications, legal and company requirements;
• Supervising off loading of fuel and the refuelling of Rigs according to Master’s instructions
• Documenting changes/as-built drawing packages for all system to reflect current status;
• Carrying out all routine tests on Emergency Systems alarms on a regular basis;
• Co-ordinating all calibration activities on equipments;
• Managing the Store with efficient and timely ordering of spares;
• Reporting to Saipem S.p.A. all technical status of Perro Negro 3 equipments;
• Giving the necessary follow-up to the Master with regards to training needs;
• Supporting the Master on the supervision that all rules and regulations, in specific those referred on safety on job site, are respected;
• Supporting the Master on guaranteeing that all personnel on board are conscious of their function and the importance it has in the operations and safety activities;
• Supporting the Master during the audits carry out on board by Saipem Departments or Third Parties.
2.3.4 SAFETY OFFICER
He is based on board in close co-operation with Drilling Superintendent and in close contact with the HSE Coordinator (ashore) his duties and responsibilities consist of:
• Manage the HSE matter on board;
• Support the Drilling Superintendent about all matters relevant to HSE system;
• Provide for statistics information;
• Review the HSE system as well as the HSE Plans/Programs and Accident/Incidents reports.
• Ensure that all safety measures included in the Project HSE Plan have been carried out;
• Ensure that the safe working and emergency procedures have been carried out;
• Promote Project HSE Plan by personal example;
• Participate in the Accident/Incident investigations along with the Drilling Superintendent and issues the
relevant monthly report;
• Promote periodical safety meetings;
• Conduct regularly scheduled meetings;
• Implement Environmental mitigation measures and Environmental protection methods for the Project,
according with local and Client requirements;
• Monitor and enforce safety and environmental requirements of all sub-contractors;
• Clear regular inspections of work posts;
• Attend the Client safety meetings;
• Provide information, instruction and/or training to personnel;
• Ensure that Permits to Work have been carried out properly;
• Organise safety and environmental training courses for the new employees;
• Provide written reports as requested in a timely and correct manner;
• Establish and maintain at all time a “hand over book” so his relief can quickly get acquainted with the
present situation on site;
• Be familiar with Client HSE requirements.
REPORTING SUPERIOR : Drilling Operation Manager, Drilling Superintendent, Master, HSE Cordinator (On Shore).
2.3.5 TOOLPUSHER
He assist the Drilling Superintendent in the right and cheap realisation of the well drilling and completion programs, in particular:
• He give the instructions about the drilling activity to the Driller according to the orders received from the
higher hierarchical position, which he interpret and changes within specific limits;
• He control and prepare the equipment, with particular attention to the instruments to be run into the well and
verifies its state after the use, signalling the wear and eventual breaking or damages to his superior;
• He co-ordinate and control the work of the drilling crews, being present at the operations, if necessary, or
giving specific instructions;
• He assist his superior in the supervision (direction) of the crew on duty during the activities and special
and/or particularly complex operations;
• He control the efficiency of the safety equipment, the state of wear of the block crackers and the operating
(functioning) of the travelling block safety device;
• He co-ordinate the mixing, the use, the control and the correction of the active mud according to the
programs and instructions received;
• He signal the need of renewing the store of materials and asking the equipment necessary for the Rig
activities to his superior and, in case of his absence, he provides directly;
• He keep the contacts, when necessary, and provides the Company representative with the information
within his competence.
He assist his superior in cheaply carrying out the Rig skidding, with particular attention to:
• Co-ordinating the activity of the drilling crew during the tear down or Rig skidding;
• Checking the alignment of hidraulic swabs, this shall be made by measuring the distance between the
pistons and the end capping beams;
• Organising the activity of the drilling staff together with that of the lift and transport staff, assuring himself
that the loading of the materials and equipment is carried out in the proper sequence and with the necessary caution;
He assist his superior in assuring the application of the established safety regulations and measures and in particular he organise the emergency drills, as well as the safety meetings.
2.3.6 DRILLER
According to the instructions received, he take care to carry out the drilling operations, co-ordinating the work of the crew on shift with particular attention to:
• Receiving the instructions about the drilling parameters (weight on the bit, number of turns of the T.D. /
R.T., pressures and capacities of the pumps), as well as other work modalities (type and expected / foreseen time of bit, mud features, hole control, etc.) and assuring their application, that is to say, doing what he considers appropriate respecting the specified limits but correcting them according to the drilling state.
• Receiving the instructions of the Driller of the previous shift and, in his presence, controlling the work
situation (weight of the string, active and storage mud, etc.);
• Controlling and preparing the necessary equipment for the work of his shift, such as: drill pipes and collars
and other tubular materials, cross-over joints, etc.;
• Operating at the drawwork control during the drilling activity and the most difficult operations and, during the
other operations, taking turns with the Assistant Driller at the Drawwork control.
• Taking care of the execution of particular operations under the control or on the basis of specific
instructions of his hierarchical superior;
• Taking care of the execution of various controls concerning the state and the functioning (working) of the
Rig, block cracker, various safety equipment and devices, mud, etc., communicating eventual irregularities and, if possible, providing for their corrections;
• Acting (intervening) properly and promptly in emergencies, taking care at the same time to inform the
hierarchical superior.
He write out the daily drilling report for the assigned shift, with the description of the work carried out, equipment used, partial times, drilling rate, progressive depth, mud features and personnel employed. He keep the measures and pipes book up-to-date and he does sketches of the drill string and all the tools which have to be run in the well.
He respect and get the others to respect the application of the safety regulations and measures established for the staff of his crew, taking part in the emergency drills and in the safety meetings.
2.3.7 ASSISTANT DRILLER
During his assigned shift, he take part in the development of the drilling activities, with particular attention to:
• Taking turns with the Driller in controlling the drawwork during operations such as penetration rate, etc.,
respecting the drilling parameters indicated by the Driller;
• Carrying out the controls about the mud features and level, according to the Driller instructions;
• Operating / handling the gates of the mud circuit;
• Taking part in the pipes running and pulling operations, each time holding (occupying) different positions (at
the drawwork controls, at the slips, at the elevator, at the sandline);
• Taking part, together with the other operators, in the nippling up, Rigging up and dismantling of safety and
special equipment ( Bop system, wellhead);
• Co-operating with other operators in the mud mixing.
During the assigned shift, he carry out the controls of the machinery and Rig equipment and routine maintenance in aid and / or in substitution of another operator, with particular attention to:
• Controlling the pumps functioning, the pressure of the reservoirs for the Rig pneumatic controls and the
safety equipment vessels, signalling the eventual irregularities to his direct hierarchical superior;
• Carrying out routine maintenance such as drive chains repair, substitution of valves and gaskets of the mud
pumps, etc., in aid and / or in substitution of other operators.
Together with other operators and according to the instructions of his direct hierarchical superiors, he take part in the Rig skidding, carrying out dismantling and disconnection of parts, loading and unloading of material, connections of parts thanks to the use of jointing pins/plugs, flanges and bolts, etc.
He respect the established safety regulations and measures, taking part in the emergency drills and safety meetings.
2.3.8 DERRICK MAN
He take part in running into and pulling out from the well the pipes and tubing, with particular attention to:
• Carrying out the hooking and unhooking of the elevator of stands, moving them into the apposite rack, while
working on the monkey board;
• Taking part in the columns running (casing), placing the pipes for the jointing and activating opening and
closing devices of the elevators, while working on the casing stabbing board;
• Taking part in the lay down of the pipes both working on the drilling floor and on the pipe rack.
According to the instructions of his hierarchical superiors, he carry out the mixing and control of the drilling mud, in order to maintain them and to bring them to the desired characteristic, paying particular attention to:
• Carrying out the mud mixing, determining the quantity of the single materials to use, through simple
calculations and according to the established percentages;
• Determining the mud properties on samples taken at the exit of the shale shaker, thanks to simple
laboratory equipment and then recording the data obtained;
• Taking under control the mud level in the inlet / suction pit to check the regularity of the circulation and to
signal any anomalous variations to the competent operator;
• Carrying out the cleaning of the shale shaker net, mud ditches and mud pits with shovels, scrapers and
water-sprays, whenever it is necessary.
He carry out or he co-operate with other operators for the execution of various duties, with particular attention to:
• Carrying out the loading, unloading and settling of the drilling equipment and various material such as:
chemicals in sacks or barrels, drill pipes, casings, tubing, spare parts for pumps and engines, oil cylinders, etc.;
• Carrying out the substitution of the shale shaker nets;
• Carrying out the batching of the various equipment;
• Helping the other operators in the substitution of the spare parts of the mud pumps, etc., and in measuring
and controlling the drill pipes and tubing;
• Taking part in the Rigging up and dismantling of the equipment.
Together with other operators and following the instructions of his direct hierarchical superiors, he take part in the skidding of the Rig, carrying out dismantling and disconnection of parts, loading and unloading of material, connections of parts through the use of jointing pins/plugs, flanges and bolts, etc.
He respect the established safety regulations and measures, taking part in the emergency drills and in the safety meetings.
2.3.9 FLOOR MAN
During his assigned shift and working on the drilling floor, he take part in the running and pulling operations of the drilling pipes and covering pipes, paying particular attention to:
• Blocking and releasing the tubular material in the rotary table through slips;
• Attaching, detaching and handling the keys for the breaking-out or the tightening of the tubular material;
• Closing and opening the elevator to hook (link) or release the tubular material;
• Cleaning and lubricating the threads of the pipe connections;
He co-operate with other operators in the execution of subsidiary duties, paying particular attention to:
• Carrying out the substitution of the spare parts of the mud pumps and some maintenance works, together
with the other operators;
• Helping the other operators in the mud mixing, in the ditch and pits cleaning;
• Helping the other positions in measuring and controlling the pipes;
• Handling the valves of inlet and delivery of the mud circuit according to the directions (instruction) of the
other operators;
• Carrying out the loading, the unloading and the settling of the drilling equipment of various material;
• Helping the other operators in the Rigging up and dismantling of particular equipment;
• Carrying out the Rigging up and the dismantling of equipment such as tongs, casing clamps, etc., according
to the directions (instructions) of the superior levels.
Together with the other operators and following the instructions of his direct hierarchical superiors, he take part in the Rig skidding.
He respect the established safety regulations and measures, taking part in the emergency drills and in the safety meetings.
2.3.10 ROUSTABOUT
Under the direction of the Toolpusher carry out all the yard activities needed to assist the Rig floor personnel for the execution of the drilling activities mainly consisting of:
• Assistance of crane and crane operation;
• Preparation of tubular material (drill pipes and casing) and equipment to be used on Rig floor;
• Loading and unloading of equipment;
• Handling and moving equipment onboard (Chemicals , tubular, drums, etc.);
• Help derrick man for mud preparation;
• General cleaning of the working areas / Rigs area;
• Storage of material and spares;
• Painting / chipping activities;
• Assistance of Welder / Chief mechanic / Chief electrician for maintenance activities (cleaning, painting,
chipping).
Together with the other operators and following the instructions of his direct hierarchical superiors, he take part in the Rig skidding.
He respect the established safety regulations and measures, taking part in the emergency drills and in the safety meetings.
2.3.11 CHIEF MECHANIC
He take care of controlling the internal combustion engines, pumps, compressors and other parts of the Rig and of the services, paying particular attention to:
• Checking the good functioning of the main engines and service engines as well as the temperature levels,
oil and water pressure and eventual filling ups;
• Checking that the limits / bounds of regulation of the engines and engines and generators are kept within
the established values;
• Controlling the functioning of pilot valves, regulating valve, compressors oil pumps and the efficiency of
seals and filters;
• Signalling the need of extraordinary maintenance, as well as the eventual need of repair or overhauls,
which can not be carried out on site, to his direct superior.
He take care of the preventive, extraordinary and repairing maintenance of the engines, machinery and Rig, using the standard equipment. For example, he take care of:
• Carrying out the timing of the engines;
• Supplying what is necessary for the substitution of liners, pistons and valves of engines and mud pumps, oil
filters and engine injectors and for the rods adjuster;
• Carrying out the substitution of the bushings, bearings, etc., when necessary;
• Carrying out the overhaul or the substitution of valves and filters of the Hydraulic controls and of the
lubrication system for engines, pumps and compressors;
• Occasionally, carrying out the turret lathe works for the building or the overhaul of simple parts of engines
or machinery under repair.
He keep the stocks of spare parts and consumption materials of his job, verifying their consistence (importance) and signalling the need of replenishing them to his direct superior on the basis of the consumption expectation and the provisioning times. He supply also the results of particular materials and spare parts (used) to his direct superior, and consults the catalogues of building firms of Rigs and engines.
He take part in the skidding of the drilling Rig, checking the hydraulic circuit, remaining in the operating area during the operation.
He respect the established safety regulations and measures, taking part in the emergency drills and safety meetings.
2.3.12 Motorman
Under the direction of the Chief mechanic he carry out controls of the internal combustion engines, pumps, compressors and other parts of the Rig and of the services, and carry out also small equipment maintenance and repair job. In particular he pay attention to:
• Checking the good functioning of the main engines and service engines as well as the temperature levels,
oil and water pressure and eventual filling ups;
• Checking that the limits/bounds of regulation of the engines and engines and generators are kept within the
established values;
• Controlling the functioning of pilot valves, regulating valve, compressors oil pumps and the efficiency of
seals and filters;
• Change of lube oil and filters;
• Hydraulic system connection and maintenance.
He take part in the skidding of the drilling Rig.
He respect the established safety regulations and measures, taking part in the emergency drills and safety meetings.
2.3.13 Welder
In the Rig workshop and at work he carry out works of light carpentry and piping for the building and repairing of parts of the Rig (manifolds and mud circuit, plates (sheets) of mud pits and containers, walkway, handrail, roofing, water and naphtha lines, etc.) and of particular machinery and equipment, using electric welding machine, oxyacetylene system and portable electric lapping machine.
He carry out the maintenance of the equipment he was entrusted with.
He signal eventual irregularities noticed during the execution of works to his direct superior.
He respect the established safety regulations and measures, taking part in the emergency drills and safety meetings.
2.3.14 CHIEF ELECTRICIAN
Under the supervision of the Vessel Maintenance Supervisor he control the functioning of the equipment, electric machines and relative switch boards on the drilling Rig and he carry out their maintenance, with particular attention to:
• Checking the voltage of the alternators and exciters of the auxiliary groups;
• Carrying out a control of the collectors and brushes of engines and generators (power plants);
• Controlling the functioning of the services electric engines;
• Carrying out the maintenance of the remote control switch of the switch board, dismantling, controlling,
cleaning and lubricating the components and regulating the pressure of contacts;
• Carrying out the control of the air conditioning, refRigeration system, contacts of the thermostats, pressure
switches and the substitution and setting of relays and switches, etc.
He take care of the preventive, extraordinary and repairing maintenance of the electric engines, electric machinery and Rig, using the standard equipment. For example, he takes care of:
• Carrying out the timing of the engines;
• Carrying out the substitution of the bushings, bearings, etc., when necessary;
He keep the stocks of spare parts and consumption materials of his job, verifying their consistence (importance) and signalling the need of replenishing them to his direct superior on the basis of the consumption expectation and the provisioning times. He supplie also the results of particular materials and spare parts (used) to his direct superior, and consults the relevant catalogues.
He take part in the skidding of the drilling Rig, checking the electric cables and all the machinery of his job.
He carry out the repairing of the circuits, equipment, electric machines and relative switch boards installed on the Rig.
He respect the established safety regulations and measures, taking part in the emergency drills and safety meetings.
2.3.15 ELECTRICIAN
Under the direction of the Chief Electrician he controls the functioning of the equipment, electric machines and relative switch boards on the drilling Rig and he carries small maintenance and repair job, with particular attention to:
• Checking the voltage of the alternators and exciters of the auxiliary groups;
• Carrying out a control of the collectors and brushes of engines and generators (power plants);
• Controlling the functioning of the services electric engines;
• Carrying out the maintenance of the remote control switch of the switch board, dismantling, controlling,
cleaning and lubricating the components and regulating the pressure of contacts;
• Carrying out the control of the air conditioning, ref. Rigeration system, contacts of the thermostats, pressure
switches and the substitution and setting of relays and switches, etc.
He take part in the skidding of the Rig.
He carry out the repairing of the circuits, equipment, electric machines and relative switch boards installed on the Rig.
He respect the established safety regulations and measures, taking part in the emergency drills and safety meetings.
2.3.16 CRANE OPERATOR
He operates the crane and crane under the direction and instruction received from the Tool Pusher / Deck Officer. In particular he carry out the following:
• He is responsible for the entire crane lifting operations keeping particular attention that material to be lifted
and lifting condition does not exceed the working limit of the crane design;
• He give instruction to the foreman and verify the correct slinging of weights to be lifted and moved;
• Check the efficiency of crane instrumentation, mechanism and wires reporting failures or need for
maintenance or repair to his direct superior keeping relevant record of the inspection, repair and maintenance carried out;
• He is in charge to replace the jib or hoist wires when required as well as boom elongation operations;
• Compile the documentation relevant the use of the crane;
• Respecting the established safety regulations and measures, taking part in the emergency drills and safety
meetings;
• Checking that the documents necessary for the transport are properly filled in.
2.3.17 MEDIC
Under the supervision of the Drilling Superintendent he is in charge of the Rig medical and hygiene aspects being responsible for immediate first aid and treatment of injured personnel. In particular he carry our the following:
• Report directly to the Drilling Superintendent and HSE Department;
• Implement the Project Health Plan and Program;
• Co-ordinate all medical emergency;
• Apply the disease prevention program;
• Cooperate with Safety Officer;
• Provide to hygiene and sanitary inspections (mess room, accommodation, refrigerator, kitchens, laundries,
bathroom, etc.);
• Establish a working relationship with ashore base for hospital, laboratory, ambulance, etc.;
• Provide for all medical facilities including ordering or medicines and equipment required for the Clinic;
• Establish and maintain at all time a “hand over book” so his relief can quickly get acquainted with the
present situation on site;
• Be familiar with Client Health requirements.
2.3.18 RADIO OPERATOR
Under the instruction of the Master he is in charge of the communication system radio / telephone / satellite (where available) he co-ordinate the emergency calls to be made in case of emergency, he keep records of telephone and radio calls for relevant invoicing and debit purposes.
He maintain contact with supply vessel and ashore base.
2.3.19 STOREKEEPER
Under the instruction of the Drilling Superintendent he is in charge of the stores and relevant materials. He is in charge and control (keeping relevant records) all material movements (such as material received, material stacked on site, material distributed, consumed, delivered back, sent for repair etc.). He keep record of material value and compile all the necessary documentation required for material movement (orders, requisition, stock, bills of lading, a.w.b., transport documentation, packing list and so on).
Duties and responsibilities:
• He receive materials and equipment based on purchasing orders issued by Head office or locally;
• He control the expected delivery dates of material ordered and inform the Drilling Superintendent of delays
in order to speed up and ensure a prompt delivery;
• He control the material received and inform the Drilling Superintendent of any deficiency or damage in
order to revert to the suppliers. He update the relevant computerised material stock situation;
• He store the material in relevant appropriate places and guarantee that is properly preserved;
• He control and keep filed the all material certificates and give copy to the relevant personnel interested.
• He distribute the material required on site for working purposes to relevant personnel (Chief mechanic, Tool
Pusher, Driller, Chief Electrician, etc.) and keep relevant record;
• He compile the material requisition form necessary to order materials and controls that the stock level of
materials is always kept in accordance to the level established with Head office technical service;
• He require relevant identification codes to Head office for materials not yet registered or used previously;
• He control and inform the Drilling Superintendent about materials not more required or obsolete for
relevant disposal actions;
• He pack and prepare all document requested for all material which is sent away from the Rig stores.
He respect the established safety regulations and measures, taking part in the emergency drills and safety meetings.
3. METHODS OF RISKS ANALYSIS AND ASSESSMENT 3.1 CRITERIA ADOPTED FOR RISKS ANALYSIS
Foreword:
The drilling activity is a dynamic activity which is carried out through a series of operations that goes from the Rigging up to the real drilling activity till the Rig tear down. The same will then be moved to another site, sometimes hundreds kilometres (far) away.
The personnel should be able to carry out different activities, each of them can require specific capacities and knowledge.
In particular, every member of the drilling crew can be called (appointed) to co-operate with the crane operator in order to unload the materials from the supply vessel, assemble the tubular material, carry out the maintenance of the pumps, blow out preventer (B.O.P.), equipment of the mud circulation system and drilling equipment, to take part in pulling out and running the drilling pipes and tubing, to use hoists, and so on.
All these operations are carried out by the drilling crew.
The remaining personnel carries out specific works such as the maintenance and the management (running) of the Rig.
Moreover, we shall not forget that although the site area (even if it is not wide) presents the heart of the drilling activity in the drilling floor, the personnel, as it has been previously noticed, should work also in all the remaining areas of the Rig.
The numerous duties of the personnel, their execution in different areas onboard, the impossibility to quantify the permanence in the various areas of the site, even in a purely theoretical way, suggested us that we should analyse the dangers of the drilling activity on the whole, rather than the dangers referred to the workplace (position) and exposure time, which, in any case, could be valued only approximately.
Risk analysis Definitions:
Hazard: Intrinsic property or quantity of a determined factor (for example, work materials or
equipment, work methods and practices, etc.) which has the potential to cause damages;
Risk: Probability that the damage potential limit will be reached during the use, that is the
exposure, of a determined factor.
Risk analysis Assessment procedure of the possible damage extent as risk consequence for the
health and safety of the workers during the execution of their tasks, caused by the occurring of a danger on the working place.
3.2. RISK MATRIX FOR THE ANALYSIS OF THE CRITICAL STATE
Once the hazards are identified for each task undergoing a risk assessment, they will be analysed to determine the Risk Value. Definitions of the terminology associated with risk assessment is included in the STD-COR-HSE 001 (standard to develop companies HSE MS and to establish risk), represented as:
Risk = Consequence x Probability Consequences
The evaluation of the consequences shall be qualitative, and the consequences shall be classified according to the following matrix:
Consequence Descriptions
( The highest value in the relevant category will always be used )
Value Status Result of hazard to Personnel Result of hazard to Equipment / Structures / Site Result of hazard to Environment
5 Disastrous Multiple or Single
Fatality Catastrophic Damage, Unlimited Delay Uncontrolled Pollution 4 Very Serious Serious Injury requiring Hospitalisation Major Damage, Major Delay Pollution Requiring Outside Assistance 3 Serious
Lost Time Accident 3 Days or more incapacity Serious Damage, Serious Delay Pollution Above Notifiable Limits 2 Moderate Injury Requiring Medical Attention
but not LTA
Significant Damage, Significant Delay
Pollution Within Statutory Limits
1 Slight Injury Requiring
First Aid Only
Moderate Damage, Moderate Delay
Pollution Within Capacity of Worksite
Probability Categories
These categories are defined as :
Value Status Description
5 Inevitable Harm is almost certain to occur
4 Most Likely Harm will occur frequently
3 Likely Harm will occur infrequently
2 Unlikely Harm will occur occasionally
Risk Value
The risk analysis estimate is made of the consequences and probability of each hazard identified. The product of these two is defined as the risk value.
The Risk Value is indicated as follows:
RISK VALUE Probability x Consequence = High (Unacceptable) - 15 to 25
= Medium (Acceptable subject to risk reduction measures / contingency plans be applied) - 5 to 12
= Low (Acceptable risk) - 1 to 4
Guidance on the consequences and probability of particular hazards are based around the simple matrix below: RISK MATRIX PROBABILITY Inevitable 5 5 10 15 20 25 Most Likely 4 4 8 12 16 20 Likely 3 3 6 9 12 15 Unlikely 2 2 4 6 8 10 Most Unlikely 1 1 2 3 4 5 1 2 3 4 5
CONSEQUENCE SLIGHT MODERATE SERIOUS VERY
SERIOUS DISASTROUS
Risk Reduction Measures
Determination of Risk Reduction Measures
Once the risks have been analysed, they must then be assessed against agreed acceptability criteria. Below is an indication of the action and time scale for addressing control measures.
RISK VALUE ACTION / TIME SCALE
High Immediate: - Before work is started or allowed to continue
Medium Controls to be in place as soon as is practicable
Selection of Suitable Risk Reduction Measures
Risk reduction process must address the means of providing a solution in the following order :
• Eliminate the risk by removing the hazard - “engineer out” the problem at source. • Reduce the risk by substitution of a less hazardous process, activity or substance.
• Isolate (protect everyone) by effective engineering controls such as enclosing the hazard, removing the person from the hazard or reducing the person’s exposure time to the hazard.
• Install protective devices such as guards, emergency stops and trip switches etc. • Enforce Permits-to-work, special rules and procedures to closely control the hazard(s) • Provide proper supervision, supported by training, instruction and relevant information
• Provide Personal Protective Equipment only as a “last resort” and in support of the control measures 1-6 above.
In addition, Saipem will introduce measures to control and reduce the potential hazards / risks in accordance with:
• Current local / international legislation. • Client requirements
• Codes of practice.
• Recognised international standards.
• Saipem’s own methods of control as defined in the risk control hierarchy above. Note:
The above methods for determining Hazards, Consequences, Probability and subsequent Risks and Risk Reduction Methods, are to be used on the site where no other qualitative or quantitative method is available.
3.3. DRILLING ACTIVITY RISKS ANALYSIS
The Rig drilling activities have been studied and evaluated to highlight all the possible risk involved during their execution .
To analyse and take into consideration all risk involved during the various activity phases two different type of tables have been prepared : Activity Sheet and Hazard sheet.
The activity sheet describes the different jobs and activities carried out on a drilling Rig during the all well operation.
On this sheets a brief job description is done and all risk involved in the relevant job execution are summarised in the column “ key safety consideration”.
The key safety consideration are therefore linked with the relevant Hazard sheet which have been prepared specifically for each type of hazard that may occurs on that particular activity.
Risk evaluation reported on the Hazard sheet have been worked out using the risk matrix reported at point 3.2
3.3.1 PICK UP DRILL COLLAR
ACTIVITY PICK UP DRILL COLLAR DATE 31.01.2007 REV.02
PERSONNEL INVOLVED Floormen , Ass. Driller , Deck Foreman , Roustabouts ,
Crane operator
JOB DESCRIPTION
Collect drill collars from the supply vessel with crane and place the collars on the pipe rack Measure collars, clean boxes and pins if necessary
Attach and tighten nubbing or sub. Roll onto catwalk
Attach lifting slings. Lift collar to floor with air winch ( or crane / drawwork ) Secure drill collar with rope while removing thread protectors
Place collar directly into elevator Break off lifting nubbing or sub
KEY SAFETY CONSIDERATIONS HAZARD HAZARD SHEET NR.
Collecting drill collars from supply vessel with crane Crewman near the crane
hit/crushed 27
Lifting of drill collars with crane Collars dropped, hit crew 25
Placing drill collars on pipe rack End stop not up 25
Rolling drill collars on pipe rack Collars rolled incorrectly 25
Attaching lifting equipment Fingers, hands injury 60
3.3.2 PICK UP DRILL PIPES
ACTIVITY PICK UP DRILL PIPES DATE 31.01.2007 REV.02
PERSONNEL INVOLVED Floormen, Ass. Driller, Deck Foreman, Roustabouts, Crane operator
JOB DESCRIPTION
Collect drill Pipes from the Drill Pipes basket with crane and place the Pipes on the pipe rack Measure pipes , clean boxes and pins if necessary
Attach and tighten nubbing or sub. Roll onto catwalk
Attach lifting slings. (Lift Pipe to floor with air winch or crane) Secure drill Pipe with rope while removing thread protectors Place Pipe directly into mousehole or elevator
Break off lifting nubbing
KEY SAFETY CONSIDERATIONS HAZARD HAZARD SHEET NR.
Collecting drill pipes from relevant basket with crane Crewman in the basket
hit/crushed 27
Lifting of drill pipes with crane Wrong lifting methods 27
Placing drill pipes on pipe rack End stop not up 25
Rolling drill pipes on pipe rack Pipes rolled incorrectly 25
Attaching lifting equipment Fingers, hands injury 28
Lifting Drill pipe joint Wrong lifting methods 28
Removing thread protectors Joint swing uncontrolled 60
3.3.3 PREPARE CASING
ACTIVITY PREPARE CASING DATE 31.01.2007 REV.02
PERSONNEL INVOLVED Floormen , Ass. Driller , Deck Foreman , Roustabouts ,
Crane operator
JOB DESCRIPTION Collect casing Joints from the supply vessel rack with crane Place the joints on the pipe rack
Remove casing protectors Drift the casing
Clean casing couplings
Paint on joint numbers. Measure the casing Fit casing centralisers
KEY SAFETY CONSIDERATIONS HAZARD HAZARD SHEET NR.
Collect casing Joints from the supply vessel rack Wrong lifting methods 27
Transporting casing with crane or crane Dropping load 27
Placing casing joint on pipe rack End stops not up 25
Rolling casing on pipe racks Crushing fingers / hands 25
Attaching Float collar , float shoe Pinching fingers/hands 67
Attach Casing centralisers Fingers / hand eye
3.3.4 PICK UP CASING
ACTIVITY PICK UP CASING DATE 31.01.2007 REV.02
PERSONNEL INVOLVED Driller, Floormen, Ass. Driller, Deck Foreman, Roustabouts,
Crane operator
JOB DESCRIPTION Roll casing joint onto or beside the catwalk
Attach casing thread protectors
Attach lifting slings or single joint elevator. Lift Casing joints to floor with crane If using crane attach elevator
Control casing joint with securing ropes while lifting, removing thread protector Lift casing joint into derrick and stab onto casing collar in hole
Make up casing joint with tongs
KEY SAFETY CONSIDERATIONS HAZARD HAZARD SHEET NR.
Roll casing joint onto or beside the catwalk Fingers/hands crushed 25
Attach casing thread protectors Fingers/hands crushed 70
Lifting casing joint Joint drops-slips-falls 26 - 28
Securing Casing joint and removing thread protector Moving equipment
hazard 60
Stabbing casing joint and removing thread protector Fingers/hands crushed 29
Making up casing joint Fingers trapped in the
3.3.5 PICK UP EQUIPMENT
ACTIVITY PICK UP EQUIPMENT DATE 31.01.2007 REV.02
PERSONNEL INVOLVED Driller, Floormen, Ass. Driller, Deck Foreman, Roustabouts,
Crane operator
JOB DESCRIPTION Move equipment beside the derrick with crane
Attach lifting slings
Lift equipment to Rig floor with crane with instructions from signal man on the floor Lower and release equipment on the Rig floor
Lift and remove crane hook and boom from over the floor
KEY SAFETY CONSIDERATIONS HAZARD HAZARD SHEET NR.
Moving equipment with crane Crane 26 - 27
Correct lifting sling and attachment to the equipment Load fall or spill 26
Lift equipment to Rig floor with crane with instructions from
signal man on the floor Crane hazard 26
3.3.6 HANDLE BHA
ACTIVITY HANDLE BHA DATE 31.01.2007 REV.02
PERSONNEL INVOLVED Driller, Ass. Driller, Derrick man, Floormen
JOB DESCRIPTION
Handle drill collars stand on the Rig floor during tripping by stabbing the lifting sub making up the lifting sub
closing the elevators, lifting the slips pulling the stand with the drawwork setting the slips attaching the tongs
breaking the connection and backing out the stand setting back the stand
KEY SAFETY CONSIDERATIONS HAZARD HAZARD SHEET NR.
Picking up and making up the lifting sub Pinch fingers 28
Closing the elevators, lifting the slips Pinch and trap fingers 70
Placing tong on the drill collars Pinch and trap fingers 67
Breaking out drill collars Tong slip or line hits
crewman 67
Removing gumbo from drill collars Drops onto Floormen 29
Racking back drill collar stand Fingers/ hands/ feet
3.3.7 HANDLE DRILL PIPES
ACTIVITY HANDLE DRILL PIPES DATE 31.01.2007 REV.02
PERSONNEL INVOLVED Driller, Ass. Driller, Derrick man, Floormen
JOB DESCRIPTION Handle drill pipes stand on the Rig floor during tripping by
Closing the elevators, lifting the slips pulling the stand with the drawwork
setting the slips attaching the tongs or iron roughneck breaking the connection and backing out the stand setting back the stand
KEY SAFETY CONSIDERATIONS HAZARD HAZARD SHEET NR.
Closing the elevator on tool joint Fingers/ hands trapped 70
Lifting and setting the slips Trap fingers hands 69
Placing the tongs or iron roughneck on drill pipe coupling Trap fingers hands 67
Breaking the drill pipe coupling Hit by tongs / lines 29
Set back drill pipe stand Fingers/ hands/ feet
3.3.8 USE TONGS
ACTIVITY USE TONGS DATE 31.01.2007 REV.02
PERSONNEL INVOLVED Driller, Ass. Driller, Derrick man, Floormen
JOB DESCRIPTION Pipe tongs are on the Rig floor for making up and breaking out the pipes One tong is fastened by sling to anchor post the other to a cathead winch line The tong jaws are closed and set each side of the pipe coupling
Once tong is set the coupling is made up applying force to the cathead The tong lines are reversed when breaking out the coupling
Tong are tied back clear of the rotary table when are not in use
Tongs are lifted with a counterbalance system anchored to the derrick structure
KEY SAFETY CONSIDERATIONS HAZARD HAZARD SHEET NR.
Tie back tong Tong tied back out of
way when not in use 67
Move tong up or down Only move by handles 67
Close tong jaw Only close by handles 67
Set tong Only set by handles 67
Tension tong All crew clear 67
Break tong free Line tension off 67
Charge anchor line Shackled tight, lock wires 67
3.3.9 USE SLIPS
ACTIVITY USE SLIPS DATE 31.01.2007 REV.02
PERSONNEL INVOLVED Driller, Ass. Driller, Derrick man, Floormen
JOB DESCRIPTION Slips are use to hold the weight of the string
Slips are lowered inside the rotary bushing around the pipes
The weight of the string lock down the dies on the slip face into the drilling string and hold it Slips must be in good condition to hold properly
Slips must be set and remove correctly to minimise damages to pipe and slips themselves Floormen are close to the elevators and block once they are lifted
Slips are heavy and must be handled by correct number of crew
KEY SAFETY CONSIDERATIONS HAZARD HAZARD SHEET NR.
Placing the slips Hold palms up 69
Lifting and setting the slips Correct number of crew 69
Clearing the slips from the rotary area Hit by the slips 69
Watching for the elevators and blocks Hit by elevator and
blocks 69
3.3.10 USE POWER TONGS
ACTIVITY USE POWER TONGS DATE 31.01.2007 REV.02
PERSONNEL INVOLVED Driller, Ass. Driller, Derrick man, Floormen
JOB DESCRIPTION
Power tongs are used to make up or break out the drilling string connection
The power tong jaws are clamped around the drilling string connection and then rotated to accurately torque up or break out the pipe
Some power tong are fitted with a pipe spinner to back out or start the pipe make up
On some other types of Power tong this has to be done manually or with separate pipe spinner Power tongs are generally hydraulic driven
KEY SAFETY CONSIDERATIONS HAZARD HAZARD SHEET NR.
Moving the power tong into position Trap / leg / body/hand 68
Raising the Tong up or down to the connection Trap hand / leg 68
Closing the power tongs jaws Trap fingers / hand 68
Operating the hydraulic torque piston Trap fingers 68
Opening the tong jaws Trap fingers 68
