gas free & confine space entry 1

8/12/2019 Gas Free & Confine Space Entry 1

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video
http://localhost/var/www/apps/conversion/tmp/scratch_4/Total%20Safety%20Confined%20Space%20[SaveYouTube.com].mp4http://localhost/var/www/apps/conversion/tmp/scratch_4/Total%20Safety%20Confined%20Space%20[SaveYouTube.com].mp4http://localhost/var/www/apps/conversion/tmp/scratch_4/Total%20Safety%20Confined%20Space%20[SaveYouTube.com].mp4http://localhost/var/www/apps/conversion/tmp/scratch_4/Total%20Safety%20Confined%20Space%20[SaveYouTube.com].mp4


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DEFINITION

A confined space means :

1. Is not intended as regular workplace (i.e.continuous employee occupancy)

2. Has restricted means of entry or exit

3. Is large enough and so configured that anemployee can bodily enter and perform assigned

work, and

4. Is at atmospheric pressure during occupancy.


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DEFINITION

In addition, this space has at least one ofthese characteristics:

1. It contains or has a potential to contain a hazardousatmosphere

2. It contains material (solid or fluid) that has potentialfor engulfing an entrant

3. It has an internal configuration such that an entrantcould be trapped or asphyxiated by inwardlyconverging walls or by a floor which slopes downwardand tapers to smaller cross section; or

4. It contains any other recognized serious safety andhealth hazards, for example rotors.


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Authorized Entrance / StandbyPerson

DEFINITION

Authorized Entrance

A trained and competent person who is performing

the job or stationed outside the confined space.

Standby Person

The stanby person monitors the authorisedentrants and performs certain specified additionaltasks. The Standby Person must also be trained byapproved DOSH training provider. AE/SP


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Examples of confined space

o Process vessels, tower ,boilers, cooling tower, pipe,storage tanks, container,

o Spaces located below ground or deck level, such as :

oDrain pitsoSewage pitsoTunneloDuctso

TrenchesoWellsoShaftso Vaults


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Confined Space

Inert Entry (Life threatening atmospheres)

Entry into a confined space with an inertatmosphere

Entry under inert gas(N2)

eg. catalyst removal under nitrogen:

Only specialist contractors will enter andwork in inert atmospheres, withauthorisation from senior site management


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Examples of confined space


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Definition (Cont.)

Tank Silo Pipeline


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Example of Confined Space

Open Pit

Furnace Stack

FURNANCE

STACK

OIL PIT

BOILER


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Example of Confined Space

mixer


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EXAMPLES OFCONFINED SPACES


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Entry into a confined space is a hazardous

activity in the oil and gas business. Entry permit

systems have been in place for years but fatal

accidents continue to happen. An entry permit,

by itself, does not make entry safe.

Workplace safety depends on

people factors !

Why discuss entry ?


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Confined Space

TOP 10 HAZARDS IN A CONFINED SPACE (OSHA)

1. Oxygen deficiency

2. Toxic gases

3. Flammable gases4. Injury from misused of tools and equipment

5. Bodily injury due to direct contact with chemicals

6. Physical hazards such as slip, trip & falling objects

7. Drowning

8. Noise

9. Electric shock, burns and scalding

10. Excavation collapse


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Authorised Entrance Roles & Responsibilities

Follow all Work Permit Conditions and safetyrules

Maintain effective contact with the SafetyWatch. Immediately exit without question if

instructed to do so by the Standby Person

Must be Trained and Medically Certified.


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Confined Space Entry

ENTRY REQUIREMENTS

Training Employees who are involved in and enter the

confined space, serve as AE, SP, AGT or ES mustundergo confined space safety training approvedby the Department of Occupational Safety andHealth.

All persons working in a confined space must becertified physically and medically fit by a OSHmedical doctor


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Standby Person Roles & Responsibilities

Remain on duty immediately outside the Confined Spaceuntil relieved

Maintain an accurate count of allpersons in the vessel (Entry Log)

Maintain effective contact with thepersons inside the vessel Monitor activities to confirm that it remains

safe for people to remain inside Order evacuation if conditions change to

endanger people inside Summon rescue services in an emergency Do not enter


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CSE ProcessEquipment Preparation

Shut down and removal of oil and gashazards by depressurising, draining,Flush, Purge etc.

Acceptable Methods Nitrogen purging,

Water washing, Steaming, etc All traces of oil, sludge, scale etc

removed

Bleeds/vents open and tested. Thisincludes level taps, sight glasses,pressure taps, etc.

Remove surrounding (


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CSE ProcessVentilation Requirements

Ventilation is Required Prior to andDuring Entry

Use of fans, air eductors,ducting

Ventilation air supply must befrom a fresh uncontaminated airsupply

Good Ventilation Depends on: Proper Positioning Proper Installation

Proper knowledge of vessel andtask

Adequate capacity of the fan, airmover etc


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CSE ProcessOpening Requirements

Warning notices posted at all manholes.

Responsible Parties = Operations or Maintenance

Danger

Confined Space

Do Not Enter


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Gas testing

Gas testing to be carried out, by competentperson, for oxygen, flammability andtoxic gas (in that order)

Test equipment of suitable design,regularly inspected, tested/calibrated and maintained

Limitations of equipment andtest method recognised

High risk areas identified and checked

Tested from outside initially, and then inside


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CSE Permit Requirements

No Entry Will Be Allowed Into AConfined Space Without the

Issuance of a Confined Space Entry

Permit

Oxygen 20% to 20.9%

Combustible


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Entry without Breathing Apparatus (BA)

Conditions required:

Gas test results: Oxygen 20-21% (as atmospheric

air)

Flammable gas less than 10% LEL

Toxic gas less than 50% of PEL(8 hours exposure)

All traces of oil, sludge, scale etc removed

Conditions not expected to change Adequate ventilation to maintain atmosphere

If not met, further risk assessment must be

done


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Emergency action and rescue

Entry must cease if the emergency siren sounds

First action is to raise the alarm and summonthe emergency services

Only specially selected, fit, trained rescuers

can attempt rescue. Untrained personsMUST NOT ATTEMPT RESCUE

Self contained breathing apparatus(SCBA) must be used

If work or entry is stopped for safetyreasons, it must not be restarted untilall tests and checks are repeated andMain PTW and Entry Checklist reissued


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CSE Apr 2007 27

Confined Space Hazards


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Lock Out Tag Out


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WHAT IS LOCK OUT TAG OUT (LOTO)

A systematic way of controlling energy!

o The placement of a tag and a locking device on anenergy isolating device, e.g. lock & chain on anisolation valve, electrical breaker locked & openposition, etc.

o To zero the energy

LOCKOUT/TAGOUT (LOTO)


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video
http://localhost/var/www/apps/conversion/tmp/scratch_4/1%20accident_without%20lock%20out.wmvhttp://localhost/var/www/apps/conversion/tmp/scratch_4/1%20accident_without%20lock%20out.wmv


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TAG

Required for all isolated energy sources

Every craft working on the equipment must

attach a tag


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CERTIFICATES

CERTIFICATES TYPES DESCRIPTION VALIDITY


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CERTIFICATES

Normal Confine Space Entry

Certificates

Required for confined space

entry work.

7 consecutive days

with revalidation at

each shift

Excavation Certificate Required whenever the depth

of ground to be excavated is

more than 150 mm

7 consecutive days

Radiation Certificate For handling of Ionizing

Radiation Sources.

Lifting Certificate For handling of heavy lifting

work at site.

Critical Lifting lifting activity (>80% of load

chart), single lift or usingmultiple cranes,

Road Obstruction /

Closure Certificate

For closure of roads that may

affect the passage of

emergency response vehicles.



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Normal Limitation of Electrical

Access Certificate

For control of works within or

closes to proximity of live

equipment by clearly defining

the scope/boundary of the

works.

7 consecutive days

Portable Equipment

and Temporary

Installation Certificate

Required when portable

equipment is brought into

premises, eg. generator.



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Special Electrical Isolation

Certificate

Cover the work on electrical

equipment, especially high

tension systems.

3 months with weekly

revalidation

Physical Isolation

Certificate

Cover the work on process

lines and equipment to ensure

proper isolation is being

carried out.

Safety System Bypass

/ Override (SSB/O)

Certificate

Required if bypassing or

overriding the safety system.

gas free & confine space entry 1

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