Injury Prevention Oilfield

8/12/2019 Injury Prevention Oilfield

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3/17/20

W E L L S E R V I C E S

Injury Prevention on Rig In / Rig OutPrepared by Wisnu Pratama Putra, FET, as required for preschool interview

Outline

Introduction

Lifting

Hammering

Walking and Working Surfaces

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Introduction

Rig up is the activities to move and assemble equipment neededto connect the pump and the well. Vice versa, rig down is the

activities to disconnect and disassembled all equipment and move

it off from the rig.

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Injury Prevention on Rig In / Rig Out – WisnuP - 2014

In this presentation, rig up/down is specifically restricted to

cement job only.

Rigging up/down must always be done at the well site before the

job can start. During this process, we usually do repetitive

activities such as lifting, hammering, and walking on thesurfaces.

Introduction

This presentation is intended to address facts about

activities we did all the time during rigging up/down,

including risk for injuries possessed and the preventive

actions needed.

These activities are: lifting, hammering, andwalking/working on surfaces.

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LIFTING

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Lifting

One of the most frequent activities during rig up/down isby hand lifting.

Proper way of lifting MUST be achieved to prevent anytreacherous event!

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Lifting

In cement job, we mainly use 2” treating iron equipment. Thefollowing are those equipment’s weight :

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2” x 2” Plug Valve : 42 kg

1” x 2” Plug Valve : 20 kg

2” style 50 Chiksan (2 way) : 25 kg

2” style 10 Chiksan (3 way) : 32 kg

2” Tee : 17 kg

2” Lateral : 25 kg

2” 8 ft Long Joint : 33 kg

2” 4 ft Long Joint : 20 kg

2” Loop or Sweep : 72 kg

Suction hose :

Discharge hose :Mud line :

The Industry

recommends using

mechanical lifting

device or two man lift

for anything over 23

kg. Get help if needed

when lifting!

LiftingBesides weight, some external factors must be considered when doing by hand lifting :

The distance between the object being lifted and the front of the body

The number of lifts performed repeatedly

The duration of lifting activity

The starting height from which the object is lifted

The finishing height to which the object is lifted

The twist the body did during the activity.

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The greater magnitude of those factors,

the less weight that we can lift byourselves!



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Lifting

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During rig up/down, there are some equipment that is too heavy to belifted by hand such as: cement head, cement head manifold, and casing

racks. Therefore we use some mechanical devices to lift these things.

Mechanical lifting devices that usually used during rig up/down:

Forklift

• Used to lift cement head and cement head manifold from one

point to the catwalk and back.

• Used to move the casing racks when cement crews have come

Rig Crane

• Mainly used for pulling up equipment from the catwalk to the rig

floor and back.• Used to lift the stand pipe to the rig floor and back.

etc

Lifting

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Injuries risk during lifting:

Head – hand - inger Injuries

Caught between fingers

Smash fingers between objects

Falling objects

Back Injuries

Slipped disc Happens when the soft part (core) of the disc bulges

through the circle of connective tissue. Main cause would

be hard physical activities especially lift heavy loads.



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Lifting

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Preventive actions :

• Do essentials of lifting

Examine the load – plan the route – position feet – squat down – grasp

firmly – lift with legs – turn with feet – keep load close

• Use stand back 5x5

Assess the risk and engage your mind before engage your hand

• Always lift according to industry recommendation.

It means when you are about to lift a 8 ft iron (33 kg), you will need two

people (33 / 23 = 1.43 ≈ 2) or use a mechanical device. Same goes for

2” x 2” plug valve (42 / 23 = 1.83 ≈ 2) where we’ll need two people to liftit.

Lifting

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• Use proper SIPP technique

Line of strength – safe working zone – smart grip, etc

• ALWAYS work on our green zone.

• NEVER stand/walk below the mechanically lifted equipment

Because it could fall anytime

• Warm up before the job

• Stop the job! O&I!

Mitigation actions:

•

ALWAYS wear a proper PPE Hard hats, safety glasses, coverall, impact-resistant gloves, safety

boots, etc.



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HAMMERING

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Hammering

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We hammer all the time during rig up/down. Most common reasons

are :

• Connecting iron and hoses

• Open/close caps

• Open/close a pin lock

• Many more..

A hammer is basically a force amplifier that works by

converting mechanical work into kinetic energy and back.

We apply a force to swing a hammer F

After swinging, hammer head will now

have both mass and velocity.



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Hammering

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In hammering, power will be inversely proportional with accuracy.

The greater the power, the less the accuracy and vice versa. Usually

this is determined by our hand placement during swinging the hammer.

G

G

Hand placement farther to hammer center of

gravity (G): more power, less accuracy

Hand placement nearer to hammer center of

gravity (G): less power, more accuracy

Hammering

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Newton says: wherever there is action, there will be reaction acting

the same amount and opposite direction.

It means our body will receive the reaction created by the object wehammered.

F

R



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Hammering

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Injuries Risk during Hammering

Hand + finger

Strike ourselves and others

Bad hand placement

Elbow

Torsional force received from reaction

Leg

Strike ourselves/others, hammering towards ourselves.

Hammering

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Preventive actions :

• Safe hand placement

• Move away when others are hammering

• Use SIPP body technique

Line of strength: always hammer align with our line of strength

Smart gripping: use strength and precision fingers correctly

• Never hammer further than necessary

Cause more reaction load subjecting our body.

• Use confinement at our joints.

Protect our elbow• Warm up before work

• STOP the job! Use O&I!



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Hammering

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Mitigation actions :

• Always wear proper PPE (especially impact resistant gloves)

WALKING AND WORKING SURFACES

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Walking and Working Surface

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During rig up/down, we actually move all the equipment from

one point to another. In that case, we need to walk back and

forth many times!

Regardless of while carrying load or not, we never want to

slip and fall at the well site!


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General requirements from Schlumberger :

• All areas where employees step on should be kept in a clean, orderly,

and sanitary condition.

• All work areas should be kept as dry as possible

• All areas that require wet application should have properly

maintained drainage.

• Every floor, working place and passageway shall be kept free from

protruding sharp objects, sprinters, holes, hoses, or loose material.

Surfaces in well site might not be very comfortable :Ice, snow, wood, slick rig floor, etc



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When we are walking, we apply a force in our leg with the same

direction where we want to walk.

The frictional force created between our footwear and the surface

prevents us from slipping!

Force we apply (F)

Frictional force (Fs)

Normal force (N)

Slip will occur

when F is

greater than

Fs


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Risk injuries when we are slipped:

• Fall down and damage our body

• Fall down when carrying equipment will be worse

• Slipped at rig floor and slide down to the cat walk

Preventive actions :• Always scan the surface before stepping onto it

• Take the safest path, never choose a shorter yet more dangerous

path

• Walk slowly especially on the slick surface.

• ALWAYS wear ice cleats to increase friction coefficient

• Always maintain three points of contact whenever possible to

increase control and stability

• STOP the job! O&I!



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Mitigation actions :

• Always wear proper PPE at well site.

CONCLUSION

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During rig up/down, there are many activities that can cause injuries.

Therefore it will be great for the team to always held a sort of pre-rig

up/down talk together before actually start rigging.

During this talk, team can discuss about:

• Plan for spotting the equipment.

• All potential hazards in the well site.

• Preventive actions to reduce the likelihood of an undesired

event.

•

All the team member have proper and complete PPE readywith them.



3/17/20

Source outside SLB

http://myslippeddisc.blogspot.com/

Ergonomic Guidelines for Manual Material Handling,California Department of Industrial Relation, 2007

http://en.wikipedia.org/wiki/Hammer

http://www.engineeringtoolbox.com/friction-coefficients-d_778.html

http://gmrelectric.com/Portals/0/new%20big%20red.JPG

http://www.norwellengineering.com/home/default.asp?pagei

d=25

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Injury Prevention Oilfield