PR-1148 - Entry Into a Confined Space Procedure

Petroleum Development Oman L.L.C.

Document Title: Entry into a Confined Space

Document ID PR-1148

Document Type Procedure

Security Unrestricted

Discipline Engineering and Operations

Owner Functional Production Manager (UOP)

Issue Date July 2011

Revision 4.0

This document is the property of Petroleum Development Oman, LLC. Neither the whole nor any part of this document may be disclosed to others or reproduced, stored in a retrieval system, or transmitted in any form by any means (electronic, mechanical, reprographic recording or otherwise) without prior written consent of the owner.

Petroleum Development Oman LLC Revision: 4.0Effective Jul-11

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PR-1148 - Confined Space Entry Printed 21/06/11

The controlled version of this CMF Document resides online in Livelink®. Printed copies are UNCONTROLLED.


i Document Authorisation

Authorised For Issue – July 2011




ii Revision History

The following is a brief summary of the 4 most recent revisions to this document. Details of all revisions prior to these are held on file by the issuing department.

Revision No. Author Scope / Remarks

4.0 July-11 Robin Norman UOP6 Refer to Addendum 2 for changes

Apr-11 Added Section 1.9 - ALARP

Rev 3.1 Nov-09 Robin Norman UOP6/ Del Ellbec UOP7

For minor changes refer to Addendum 1

Rev 3.0 Feb-09 Robin Norman UOP6 Revised Sections 2.1 & 2.2.

Added “use of Dragger Tubes” for testing prior to Confined Space Entry

Added Appendix 1 “Reference Material”

Rev 1 Nov-98 UOP/1 SI-19 re-written in new format.

iii Related Business Processes

Code Business Process (EPBM 4.0)

EP.71.02 Operate Wells and Facilities

iv Related Corporate Management Frame Work (CMF) Documents

The related CMF Documents can be retrieved from the CMF Business Control Portal.




TABLE OF CONTENTS

1 Introduction........................................................................................................................ 6

1.1 Background................................................................................................................. 6

1.2 Purpose....................................................................................................................... 6

1.3 Distribution / Target Audience......................................................................................6

1.4 Changes to the Document............................................................................................6

1.5 Step-out Approval........................................................................................................7

1.6 ALARP........................................................................................................................ 7

2 Roles and Responsibilities..................................................................................................8

3 Confined Space Entry Procedure......................................................................................10

3.1 Preparation for Confined Space Entry........................................................................10

3.1.1 Potential Hazards Associated with Confined Space Entry.....................................10

3.1.2 Planning and Risk Assessment............................................................................10

3.1.3 Gas Freeing and Flushing....................................................................................12

3.1.4 Working Atmosphere...........................................................................................12

3.1.5 Ventilation............................................................................................................14

3.1.6 Positive Isolation..................................................................................................14

3.1.7 Use Naked Flames and Arc.................................................................................14

3.1.8 General...............................................................................................................15

3.2 Confined Space Entry Process...................................................................................15

Appendix 1 – Narcotic Effect of Hydrocarbons........................................................................19

Appendix 2 – Abbreviations....................................................................................................20

Appendix 3 – Reference Material............................................................................................21

Appendix 4 – User Feedback Page.........................................................................................22

Addendum 1 – Changes at Revision 3.1.................................................................................23

Addendum 2 – Changes at Revision 4.0.................................................................................24




1 Introduction

1.1 Background

The nature of industry in which PDO operates frequently requires personnel to enter ‘Confined Spaces’ to carry out inspections and / or maintenance and repair work. A confined space:

Has limited or restricted means of entry or exit

Is large enough for an employee to enter and perform assigned work, and

Is not designed for continuous occupancy by the employee.

A “permit-required” confined space is one that meets the definition of a confined space and has one or more of these characteristics:

Contains or has the potential to contain a hazardous atmosphere,

Contains a material that has the potential for engulfing the entrant,

Has an internal configuration that might cause an entrant to be trapped or asphyxiated by inwardly converging walls or by a floor that slopes downward and tapers to a smaller cross section, and/or contains any other recognised serious safety or health hazards. These shall include but are not limited to:

o Process vessels i.e. separators, pressure vessels

o Storage tanks

o Compressor enclosures

o Heaters and boilers

o Flare and vents systems

o Cellars and pits

o Culverts

1.2 Purpose

The purpose of this procedure is to provide all personnel, PDO or contract, with clear and concise instructions for entering or working within a confined space.

1.3 Distribution / Target Audience

This procedure is intended for use production and maintenance personnel and any other parties tasked with carrying out work covered by this procedure on behalf of PDO.

1.4 Changes to the Document

Responsibility for the upkeep of the Document shall be with the Functional Production Manager UOP, the Owner. Changes to this document shall only be authorised and approved by the Owner.

Users of the Document who identify inaccuracy or ambiguity can notify the Custodian or his/her delegate and request changes be initiated. The Requests shall be forwarded to the Custodian using the “User Feedback Page” provided in this Document.

The Document Owner and the Document Custodian shall ensure review and re-verification of this procedure every 3 years.




1.5 Step-out Approval

This procedure is mandatory and shall be complied with at all times. Should compliance with the procedure be considered inappropriate or the intended activity cannot be effectively completed or safely performed, then step out approval must be obtained from the Asset Manager - using the PR-1001e – Operations Procedure Temporary Variance, prior to any changes or activities associated with the procedure being carried out.

1.6 ALARP

ALARP is the acronym for ‘As Low As Reasonably Practicable’ which simplified means, ‘reducing the risk to a level at which the cost and effort (time and trouble) of further risk reduction are grossly disproportionate to the risk reduction achieved’. Full Compliance to PDO Standards and Procedures is a key element in achieving ALARP.

For more details refer to ALARP Definition



http://sww3.pdo.shell.om/livelink/livelink.exe?func=ll&objId=12347089&objAction=Open&viewType=1&nexturl=%2Flivelink%2Flivelink.exe%3Ffunc%3Dll%26objid%3D12347189%26objAction%3Dbrowse%26sort%3Dname%26viewType%3D1

http://mus-ws-003/livelink/livelink.exe?func=ll&objAction=download&objId=93945



2 Roles and Responsibilities

Asset Holder Accountable for ensuring all HSE Procedures are implemented within the asset

Production Coordinator Responsible for ensuring that HSE Procedures and Risk Assessments are conducted and are adhered to in the area

Responsible Supervisor Inspect work site with Permit Applicant

Check Job Safety Plan and ensure Risk Assessments are completed for each Confined Space Entry.

Authorise the Permit to Work (PTW)

Check Section 2 of the ‘Confined Space Entry Certificate’

Authorise the isolation on Mechanical Isolation Certificate

Authorise ‘Entry’ to confined space

Area Authority Validates PTW

Check Job Safety Plan and ensure Risk Assessment controls are adhered to

Conduct isolations

Inspection of work site on completion when PTW is closed

Check Section 2 of the ‘Confined Space Entry Certificate’1

Authorise ‘Entry’ to confined space2

Permit Applicant Applicant for PTW

Conduct safety checks of site and Risk Assessment with Responsible Supervisor prior to any works being carried out

Permit Holder Carry out ‘toolbox’ talks prior to works being carried out

Oversee safety of personnel and work within ‘confined space’

Ensuring strict adherence to all Safety Procedures, Job Safety Plan, Risk Assessments and Work Instructions

Checking condition of work site on completion of all works

1 If delegated by Responsible Supervisor2 If delegated by Responsible Supervisor




Standby Personnel3 Maintain register of entry / exit of personnel during work in confined space

Maintain communication and visual contact with all personnel in the confined space

Maintain emergency rescue equipment at all times during work in the confined space

Record any incidents during work process

3 Nominated on the Confined Space Entry Certificates PR-1148 - Confined Space Entry Printed 21/06/11



3 Confined Space Entry Procedure

3.1 Preparation for Confined Space Entry

CAUTION: Entry into confined spaces exposes personnel to risk in addition to those associated with the work / task. Entry into a ‘Confined Space’ should only be considered if the work cannot be accomplished from an external location.

3.1.1 Potential Hazards Associated with Confined Space Entry

Potential hazards associated with confined space entry are recognised. These hazards can be any or all of the following:

Oxygen deficiency or enrichment

Flammability (fire and / or explosion)

Residual liquids, or solids and associated toxic or other noxious gases

Chemical hazards

Physical hazards

Number of personnel working within the confined space

Restricted entry / exit

Narcotic and anaesthetic effect of hydrocarbon gas and vapours

3.1.2 Planning and Risk Assessment

The first priority is to consider if the work in the confined space can be limited or avoided. Alternatives may be:

Residues may be removed from the outside using water jetting or in place cleaning systems.

In some cases it may be possible to see inside without entering by using a boroscope.

Use of non invasive inspection techniques

If the work is to be carried out in a confined space a risk assessment shall be completed covering all activities that will be carried out both inside and outside of the space.

Personnel selected for confined space entry shall have the correct level of competence, experience and knowledge as indicated by the risk assessment. It will be necessary to include Vendors / 3rd parties or HSE professionals in this task.

The risk assessment will consider but is not limited to:

Previous contents of the confined space

Internal temperature and humidity of confined space

Ingress of substances

Oxygen deficiency or oxygen enrichment

Residues

Contamination

Physical dimensions including internal structures or obstacles

Nature of any work itself, including concurrent activities.




The maximum number of personnel required to work in the confined space

The outcome of the risk assessment process shall be a Job Safety Plan approved by the Responsible Supervisor, who shall determines what mitigation must be put in place based on the Risk Analysis.

Where the risk assessment indicates that properly trained individuals can work for periods without supervision, it should be ensured that they are competent to follow the established safe system of work and have been provided with adequate information and instruction about the work to be done.

The Permit Applicant shall prepare a rescue plan as part of the Risk Assessment Process suitable for the agreed maximum number of personnel and covering each entry. This document should be reviewed and approved by the Responsible Supervisor. Some examples of possible inclusions to the rescue plan are:

Number of personnel required to provide effective rescue.

The equipment required for immediate use

Contingency plans for loss of communication

Safest route of access and egress with respect to casualty handling

Removal of unnecessary obstacles, which will hinder rescue operations

NOTE: These issues may limit number of people in confined space

The Permit Applicant must appoint a trained rescue team before work begins. For efficient functioning, a rescue team must consist of at least two persons. The Permit Applicant must be sure that the designated rescue team can be deployed quickly in an emergency and that they will be able to function effectively. If assistance is required this shall be provided by the Area Fire Service.

The rescue team must be equipped with suitable personal protective equipment to enable them to function efficiently.

Rescue plans covering the maximum permitted number of personnel will be agreed and practiced before any entry takes place. If it is not possible or practicable to perform training exercises before entry, it is the Permit Applicant responsibility to ensure all parties with responsibilities under this plan are competent in their roles.

Entry into a confined space shall be controlled by a PTW.

All persons holding safety competent roles e.g. gas tester, must be have valid PDO Passports showing their qualifications.

Personnel required to work safely in confined spaces must have had adequate training and experience in the particular work involved. Training standards must be appropriate to the task, and to the individual's roles and responsibilities, so that work can be carried out.

In order to achieve the above the following conditions require being satisfied and / or detailed in the Job Safety Plan prior to entry into a confined space:

All entries into a confined space shall be controlled by the PTW system

When entry is required, the confined space shall be physically isolated from all sources of hazardous substances, and from all sources of energy or motive power

Hazardous substances contained within the confined space shall be displaced, and the space suitably cooled and ventilated;

The confined space shall be tested for the presence of hazardous substances and for acceptable oxygen content. If conditions for safe entry cannot be achieved or guaranteed, additional precautions to be applied, e.g. the use of breathing apparatus




CAUTION: Additional to the use of Portable Multi-Gas Testers confined spaces that have contained hydrocarbons shall be tested using a Photo-Ionization Detector (PID – e.g. Draeger tube) to confirm that Occupational Exposure Levels are complied with before an entry is made. This is particularly important for the very low exposure limits of the carcinogenic compounds such as Butane, Pentane and Benzene.

Provision of personal protective clothing and equipment (personal gas detectors if required), access and egress, standby personnel, and rescue plans

When a person is in a confined space a standby person shall be in attendance at all times and the responsible supervisor shall ensure that this person is authorised and fully briefed on the activity to be undertaken

Additional hazards, including concurrent activities in the vicinity of, or within, the confined space are considered

When entry to a confined space is required using breathing apparatus, only those persons trained and deemed competent in the use of the breathing apparatus shall be allowed to enter the confined space

All personnel involved in the confined space entry shall made aware of the hazards

3.1.3 Gas Freeing and Flushing

Tanks, towers and vessels that have contained hydrocarbon or toxic materials shall require gas freeing and ventilation before entry4 can be made.

Gas freeing shall be in accordance with PDO Procedures, PR-1073 - Gas Freeing, Purging & Leak Testing of Process Equipment (Excluding Tanks) and PR-1079 - Gas Freeing and Purging of Tanks Procedure. Once gas freed and drained5 the confined space can be opened and ventilated. This method may be employed where high concentrations of toxic gases are encountered.

Flushing with water (produced if available) shall be used on pipework, tanks, towers and vessels to remove heavy hydrocarbon deposits before opening for cleaning and / or maintenance and repair.

3.1.4 Working Atmosphere

Gas testing of confined spaces shall only be carried out by an Authorised Gas Tester and shall be as specified on the PTW and recorded on the Confined Space Entry Certificate and the Additional Gas Test Record form (if required).

OXYGEN

Confined spaces may only be entered when the atmosphere inside has been certified as having a safe oxygen (between 20%-21%) content as indicated by approved PDO detection apparatus.

WARNING: If the oxygen content is less than 20% the vessel MUST not be entered.

4 This may not be the case if the tank or vessel is to be washed and cleaned prior to gas freeing and ventilation. In such cases personnel entering the space shall be equipped with breathing equipment.5 When using water to gas freeing tanks, towers and vessels ensure that high level vents or man ways / access hatches are open to prevent drawing and negative pressure and risking collapse.



http://sww3.pdo.shell.om/getdoc?dataid=93894&objAction=download





FLAMMABLE

Entry into confined spaces where there is any possibility of flammable vapours, gas testing with an approved PDO explosive meter shall be carried out and recorded. This meter must be capable of measuring hydrocarbons in an inert atmosphere if the confined space has been subjected to gas freeing using nitrogen. (examples are Ray Systems MX6 or MSA Tankscope.) The frequency of subsequent testing shall be stipulated on the PTW. If a reading greater than 0% is indicated the Responsible Person or his delegate must be notified and any required restrictions or precautions to be taken shall be entered on the "Confined Space Entry Certificates".

Flammable process hydrocarbon vapours are also hazardous due to their potential narcotic / anaesthetic effects, and can result in irrational behaviour, loss of consciousness, or even death. Hazardous concentrations can be related to flammability limits (Refer to Appendix 1). Continuous ventilation shall be established within these spaces where possible.

TOXIC

Where toxic vapours may be present and continuous ventilation is not considered possible or feasible, each man entering the confined space shall wear positive pressure respiratory6 protection.

If NORM or Mercury is suspected then the necessary external and internal tests MUST be carried out by competent persons and the results checked and confirmed by the Production Chemists. If the tests are outside the specified limits, the confined space should be ventilated continuously and re-tested at regular intervals until acceptable. Further information on NORM and Mercury can be obtained in:

SP-1170 - HSE Specification - Naturally Occurring Radioactive Materials (NORM)

PR-1515 - Control of HSE Risks of Dealing with Mercury in PDO Facilities

INTERNAL TEMPERATURE & HUMIDITY

For entry to spaces like Waste Heat Recovery Units of gas turbines, additional hazards may exist. These hazards exist due to the operational service where the space has been subjected to high temperature. Hazards such as internal temperature, humidity and hot surfaces should be included in the risk assessment, and suitable controls put in place. These controls could for example, result in work duration being reduced accordingly.

BREATHING APPARATUS

For entry in to a confined space without the use of breathing apparatus, tests may include but are not limited to:

Oxygen (between 20%-21%)

H2S shall be no greater than 1ppm

Benzene shall be less than 1ppm, but preferably zero

Hydrocarbons in air less than 2% LEL but preferably zero (see Table)

<2% Entry allowed without BA

≥2% and <10 or atmosphere unsustainable

Entry only with BA

≥ 10% No entry allowed

6 Respiratory protection for each man in the confined space and for the Standby Personnel must be provided where the Responsible Supervisor / Permit Holder consider it necessary. At least one properly connected air mask shall be available outside of the confined space for rescue purposes. This should be included on the JSP.






CAUTION: If it is considered that the breathable atmosphere cannot be guaranteed then entry shall be completed wearing breathing apparatus.

3.1.5 Ventilation

Ventilation shall be employed to make the atmosphere inside of the confined space able to ‘support life’. Where the atmosphere in the confined space is flammable or toxic, forced ventilation will be employed to extract and clean air be allowed to replace that extracted by natural circulation from a low point.

WARNING: Outside air shall not be forced in to expel the flammable atmosphere as this may cause an explosive mixture being formed.

When dealing with vessels and tanks etc, that are have a risk of pyrophoric deposits being present within the internals reference should be made to PR-1077 – Preparation of Static Equipment for Internal Maintenance and Inspection Section 4.2 Confined Space Entry.

3.1.6 Positive Isolation

Before any entry is permitted to a confined space positive isolation shall be carried out as required.

Process equipment and systems shall be positively isolated as detailed in PR-1076 – Isolation of Process Equipment.

MECHANICAL

Mechanical isolations shall be carried out using ‘spades and blind’ where applicable, or removal of spool pieces where applicable.

ELECTRICAL

Electrical shall be isolated at the MCC or switchboard. All isolations should be carried out by a ‘competent person’ and be tagged in accordance with SP-1104 - Electrical Safety Rules and the issue of an Electrical Isolation Certificate which shall be attached to the PTW.

3.1.7 Use Naked Flames and Arc

Strict control shall be exercised on the use of ‘naked flames or arc welding’ equipment inside or in the vicinity of confined spaces where flammable vapours are or could be present. Such works shall require a ‘Hot Work Permit’ to be in force.

Fixed and portable fire equipment, correct for the type of work being undertaken, shall be provided at and adjacent to the work place.

WARNING: CO2 or dry powder type extinguishers shall not be used inside of confined spaces when personnel are inside. Accordingly water shall not be used if ‘live’ electrical equipment is being used inside the confined space. In the event of a fire personnel shall be evacuated as quickly and safely as possible.










3.1.8 General

PERSONAL PROTECTION EQUIPMENT (PPE)

Correct PPE shall be worn at all times while the work is being undertaken. Specialised PPE required for specific tasks shall be made available to all personnel involved. The requirements of specialized PPE shall be made on the Job Safety Plan.

SAFETY HARNESSES / LIFELINES

Safety harnesses shall be provided for all persons working inside the confined space if the work involves scaffolding or ‘raised’ platforms. Suitable ‘strong points’ shall be made available if not already provided.

Lifelines shall be used at all times by personnel inside the confined space.

PORTABLE POWER TOOLS

Where practical power tools used within confined spaces shall be ‘pneumatic’. Use of electrically powered equipment shall be kept to a minimum and be in accordance with SP-1111 - Temporary Electrical Supplies for Construction & Maintenance Work .

The preference shall also be made to adopt pneumatic lighting for confined spaces rather than those powered from electrical circuits.

3.2 Confined Space Entry Process

The following process shall be followed or adapted when undertaking work which requires ‘entry into a confined space’.

The following Permits and Certificates are associated with Confined Space Entry:

Permit to Work (PTW)

Confined Space Entry

Mechanical Isolation

Additional Gas Test Record

Electrical Isolation

The Permits and Certificates shall be completed, signed and attached to the PTW with a Job Safety Plan (including Risk Assessment) and all relevant drawings and documents.

1. When confined entry is required to undertake maintenance, repair or modification it must be accessed if a full or partial process shutdown of the facility or system is required.

2. If a shutdown is not required then proceed to Step 3.

If a shutdown is required this shall have been planned in to the 90 day ‘Integrated Activity Plan’ and provisions made (deferment) for the loss in production.

If the shutdown has not been planned then a ‘variance’ to the ‘Integrated Activities Plan’ shall be required to be made. This shall require the correct approvals and authorisations being obtained.





Confined Space Entry Process Flow




3. The ‘Permit Applicant’ shall complete the PTW and the Confined Space Entry Certificate as required. Depending on the nature of the work to be undertaken additional Certificates such as Mechanical7 and Electrical Isolation may be required.

4. The permit applicant and the ‘Responsible Supervisor’ shall inspect the work site and identify all hazards. The permit applicant and responsible supervisor shall produce and agree a Risk Assessment which will form the basis of a ‘Job Safety Plan’ which shall be approved by the responsible supervisor.

5. The responsible supervisor shall:

authorise the PTW

authorise the isolation on the Mechanical Isolation Certificate

check the ‘Confined Space Entry Certificate’ safety precautions (Section 2)

approve the risk assessment and Job Safety Plan

6. Once authorised the PTW and all other required certificates shall be issued to the ‘Permit Holder’ to undertake the work.

7. The area authority shall oversee or undertake the required isolation in accordance with the mechanical isolation certificate and ensure that electrical isolations have been made and certified by the competent electrical person. The isolations shall be signed for on the PTW and / or the Mechanical / Electrical Isolation Certificates.

8. The permit holder shall complete the TRIC and conduct a TRIC talk’ to ensure that personnel working on the job are aware of the safety hazards, the risk assessment contents, control measures required and emergency response procedures.

The permit holder shall oversee the provision of all necessary safety equipment and that the correct tools and PPE are provided.

9. The Area Authority shall check that all safety precautions have been taken and that all required equipment for the confined space entry is available.

10. Once the PTW has been validated by the area authority the vessel/tank/equipment can be drained, gas freed and opened for ventilation.

11. The initial gas test shall be taken when the confined space has been ventilated or prepared for entry. When gas freeing using nitrogen has taken place a meter capable of measuring hydrocarbons in an inert atmosphere shall be used. The gas test shall be conducted by the area authority or registered gas tester. The results are entered on the Confined Space Entry certificate.

12. Once the gas tests have been conducted and the confined space conforms to the requirement the authorisation can be issued by the responsible supervisor / area authority. The authorising authority shall sign the appropriate section of the Confined Space Entry certificate.

7 Isolations can be entered on the PTW, however if the isolation is complex a Mechanical Isolation Certificate is used. This may be backed by additional documents if more space is required.




CAUTION: Before entry shall be authorised confined spaces that have contained hydrocarbons shall be tested using a Photo-Ionization Detector (PID – e.g. Draeger Tube) to confirm that levels Butane, Pentane and Benzene (highly narcotic) are below OEL and % volume required to produce surgical anaesthesia.

13. The work can be carried out within the confined space in accordance with that defined on the PTW. The permit holder shall oversee the work and ensure that ‘entries’ and ‘exits’ are logged on the Confined Space Entry certificate.

The appointed ‘standby man/men’ shall maintain communication with the personnel inside the confined space and also the area authority / CCR.

14. Additional gas tests (including PID if considered necessary) shall be carried out in accordance with the PTW. These gas tests shall be entered at the correct intervals on the Confined Space Entry certificate or the Additional Gas test Records sheet.

15. On completion of the work the permit holder shall oversee the ‘normalisation’ of the work site. The confined space shall be inspected and all ‘entry and exit’ records checked before closure is authorised. Inspection and authorisation for closure shall be given by the area authority or responsible supervisor.

16. On closure the Permit Holder carry out reinstatement testing of the equipment / vessel and remove or oversee the removal of all isolations with the Area Authority. The Area Authority shall be close out the PTW.

17. The vessel/tank/equipment shall be handed over to production and brought back into service.




Appendix 1 – Narcotic Effect of Hydrocarbons

The following links shall take the user of this procedure to sites where reference information can be obtained on:

Exposure Limits:

http://www.hse.gov.uk/coshh/table1.pdf

Lower Explosive Limits / Lower Flammable Limits

http://www.engineeringtoolbox.com/explosive-concentration-limits-d_423.html

General Description of the Immediate Hazards Associated with Hydrocarbon Releases

http://www.hse.gov.uk/offshore/notices/sn_04_04.htm

Anaesthetic Effects of Hydrocarbon Gas

It requires around 4 breathes to become affected by the vapours - irrespective of concentration. It requires the same number of breaths of uncontaminated air to return to normal.



http://www.hse.gov.uk/offshore/notices/sn_04_04.htm

http://www.engineeringtoolbox.com/explosive-concentration-limits-d_423.html

http://www.hse.gov.uk/coshh/table1.pdf


Appendix 2 – Abbreviations

CCR Central Control Room

MCC Machinery Control Centre

ALARP As Low As Reasonably Practical

CCR Central Control Room

HSE Health Safety and Environment

LEL Lower Explosive Limit

PPE Personal Protection Equipment

PTW Permit to Work




Appendix 3 – Reference Material

PDO Codes of Practice

CP-115 - Operate Surface Product Flow Assets - CoP

PDO Specifications

SP-1104 - Electrical Safety Rules

SP-1111 - Temporary Electrical Supplies for Construction & Maintenance Work

SP-1170 - HSE Specification - Naturally Occurring Radioactive Materials (NORM)

PDO Procedures

PR-1001e – Operations Procedure Temporary Variance

PR-1066 - Emergency Response document Part III Contingency Plan, Volume III Production Operations

PR-1073 - Gas Freeing, Purging & Leak Testing of Process Equipment (Excluding Tanks)

PR-1076 – Isolation of Process Equipment

PR-1077 – Preparation of Static Equipment for Internal Maintenance and Inspection

PR-1078 - Hydrogen Sulphide Management

PR-1079 - Gas Freeing and Purging of Tanks Procedure

PR-1081 - The Buddy System

PR-1172 - Permit to Work System

PR-1515 – Onsite Mercury Management Procedure

PDO Guidelines

Other Documents

ALARP Definition



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Appendix 4 – User Feedback Page

PR-1148 – Confined Space Entry User Feedback Page

Any user who identifies an inaccuracy, error or ambiguity is requested to notify the custodian so that appropriate action can be taken. The user is requested to return this page fully completed, indicating precisely the amendment(s) recommended.

Name:

Ref ID Date:

Page Ref: Brief Description of Change Required and Reasons

UOP7

Custodian of Document Date:




Addendum 1 – Changes at Revision 3.1

Page Changes

7 Section 1.5 Roles and Responsibilities

Production Supervisor – “and Risk Assessments” added

Responsible Supervisor – “and ensure Risk Assessments are” added

Area Authority – “and ensure Risk Assessment controls are adhered to” added

Permit Applicant – “and Risk Assessment” added

8 Section 1.5 Roles and Responsibilities

Permit Holder – “Risk Assessments” added

10 Section 2.1.1 – “Number of personnel working within the confined space” and “The maximum number of personnel required to work in the confined space “ added

11 3rd para “as part of the Risk Assessment Process suitable for the agreed maximum number of personnel for each” added

“NOTE: These issues may limit number of people in confined space” added

6th para “covering the maximum permitted number of personnel” added

13 FLAMMABLE

“This meter must be capable of measuring hydrocarbons in an Inert atmosphere if the confined space has been subjected to a nitrogen purge. (examples are Ray Systems MX6 or MSA Tankscope.)” statement made bold and examples added

15 Step 4 – “and responsible supervisor shall produce and agree a Risk Assessment which will form the basis of” added

17 Step 11 – “When nitrogen purging has taken place a meter capable of measuring hydrocarbons in an inert atmosphere shall be used.” added




Addendum 2 – Changes at Revision 4.0

Page Changes

General Added New Front page / Added new Owner / Moved related documents to Appendix 3 Reference Material / moved roles and Responsibilities to Section 2 / Renamed Appendix 1 / changed “purging” to “gas freeing” to align with PR-1073

Page 7 Section 1.1 Background – removed last two para’s. Not necessary

Section 1.2 Purpose – Changed to read “The purpose of this procedure is to provide all personnel, PDO or contract, with clear and concise instructions for entering or working within a confined space.”

Page 8 Section 1.4 Changes to Document – added ‘shall’ in place of “should” in last para

Page 10 Section 3.1.2 – changed 2nd para to “If the work is to be carried out in a confined space a risk assessment shall be completed covering all activities that will be carried out both inside and outside of the space.”

Re-ordered last after “The risk Assessment will ---“ and removed “atmosphere”

Page 13 1st para after bullets – changed to read “The outcome of the risk assessment process shall be a Job Safety Plan approved by the Responsible Supervisor, who shall determines what mitigation must be put in place based on the Risk Analysis”.

Page 20 Amended the Process Flow diagram – moved the TRIC talk between “isolation Carried Out” and “Vessel / tank / equipment drained / gas freed and ventilated”

Amended procedural steps to capture changes

Pages 19-22

Re-arranged Appendices.



PR-1148 - Entry Into a Confined Space Procedure

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Transcript of PR-1148 - Entry Into a Confined Space Procedure