IOG 115-Use of Spades and Blinds

SHELL EXPLORATION AND PRODUCTION COMPANIES IN NIGERIA [SEPCIN]

Non-confidential PROCEDURE

APPROVAL REGISTER

DOCUMENT NUMBER:

TITLE:

IOG 115

BLINDS INDS USE OF SPADES AND BL

DOCUMENT OWNER:

UIG/P/CB

SECURITY:

NON CONFIDENTIAL

Document History: Revision

Date

Pages

Reason

3

Oct t 2010

All

3 Yearly Review

2

May 2006

All

3 Yearly Review

1

April 2003

All

Reviewed and Work Practice updated.

0

July 1999

All

Initial Publication



Table of Content 1.0

PURPOSE ��

2.0

SCOPE ��

3.0

HEALTH SAFETY AND ENVIRONMENT ��

4.0

PROCEDURE ��

4.1

GENERAL ..........................................................................................................3

4.2

SPADING/BLINDING ACTIVITIES ......................................................................... 4

5.0

LIST OF APPENDICES ��

6.0

RELATED DOCUMENTS/REFERENCES ��

Doc No :IOG:115 Doc Owner: UIG/P/C Page 2 of 10

Rev: 3

Issues: 19/10/2010

Custodian: UIG/P/CB

Review: 19/10/2013

Printed copies are uncontrolled



1.0

PURPOSE This procedure provides the details for the use of spectacle or spade type blinds and the administration control associated with the application.

2.0

SCOPE This procedure details the reasons for the insertion of spectacle or spade type blinds and all the precautions and operations associated with them.

3.0

HEALTH SAFETY AND ENVIRONMENT Wear personal protective equipment (PPE) such as coveralls, safety boots, safety helmet, etc. as specified in SPDC Safety Manual. Avoid hydrocarbon spillage to the environment and emission to air in accordance with ISO 14001 standards. Report any potential threat to the environment to the Asset Holders Site Representative and act on instructions in accordance with the HSE-MS policy

4.0

PROCEDURE

4.1

GENERAL 1. Positive isolation of equipment shall be in accordance with IOG 137 “Procedure for Preparation of Equipment for Work Activity”. This is by either breaking pipelines to and from an item of equipment (e.g. removal of a valve in a line) or by inserting a spectacle or spade type blind between a pair of flanges on a pipeline. 2. The spectacle or spade blind used for isolation must conform in rating (in accordance with DEP 30.38.01.11-Gen. Section 8. Piping Components) to the pipe or flange classification to which it is to be fitted. This is also the case for blind flanges that may be fitted. This shall apply whether it is a permanent or temporary one. 3. In the case of removing a valve, a blind flange should be fitted to both open ends of the pipeline. 4. In the case of open drain systems, the spectacle or spade blind should be installed on the downstream side of the drain valve for all permanent vessel


Rev: 3

Issues: 19/10/2010

Custodian: UIG/P/CB

Review: 19/10/2013




drain connections. 5. Closed drain systems with a double block and bleed arrangement shall have the blind installed on the upstream side of the last valve used. 6. In all other cases, isolating spectacle or spade type blinds shall be installed on the equipment side of isolation valves, so that the individual item can be positively isolated from the process. 4.2

SPADING/BLINDING ACTIVITIES 1. Blinding of process equipment (vessels, columns, pipelines, flowlines, etc.) shall be done under a Permit to Work system. 2. All equipment and pipings must be depressurised to 0 barg (atmospheric) and drained before any line breaking or insertion of spectacle or spade type blinds takes place. 3. A checklist of the status of all spectacle and spade type blinds will be maintained and kept up to date and maintained in the facility check list register (appendix 2) by the Site Operator. 4. Any change to the normal blind position shall be recorded in the ‘blind’ checklist. The authourisation shall be given by the Asset Holder Site Supervisor using the form in appendix 1. 5. The Site Operator shall check the actual valve status of the blinds every two weeks (14days) 6. The Asset Holders Site Representative shall audit the blind check list status under his control every six months using the checklist in appendix 2 to ensure that the check list is up to date, and confirm that the actual position of the blinds are correct on site.


Rev: 3

Issues: 19/10/2010

Custodian: UIG/P/CB

Review: 19/10/2013




5.0

LIST OF APPENDICES

Appendix 1 1:: Approval for change in blind status BLIND No

LINE No


SIZE and CLASS

PEFS No

PTW No

Date

BLINDBLIND-IN Name of Authorised Personnel by AHSS

Date

Rev: 3

Issues: 19/10/2010

Custodian: UIG/P/CB

Review: 19/10/2013


BLINDBLIND-OUT Name of Personnel Confirmed By AHSS



Appendix 2 2: Facility blind checklist Drawing Number

Line No

Size & Class

��

Location

Reason

��

I have personally completed the blind checks and confirm the status is as noted above: Name:__________________________________________________ Name

Signed:_________________________________________________ Date:___________________________________________________ Date

Comments: Comments Doc No :IOG:115 Doc Owner: UIG/P/C Page 6 of 10

Rev: 3

Issues: 19/10/2010

Custodian: UIG/P/CB

Review: 19/10/2013




Appendix 3: Example of spades/blinds & colour codes Appendix 3 3.1 .1: .1

��

Appendix 3 3.2 .2: .2: Raised face blind


Rev: 3

Issues: 19/10/2010

Custodian: UIG/P/CB

Review: 19/10/2013




Appendix 3.3 3.3:: . Audit Checksheet Guidelines for Completing Audit Check sheet (1) (2) (3) (4) (5)

Select an activity to be audited relevant to the document. Review activity for actions/procedures, which are covered by the document. Audit `as-found' condition/performance against requirements identified in document. Note whether `as-found' is acceptable, highlighting areas of non-compliance. Report audit findings to Line Management, identifying any remedial actions required, along with action plan. Audit Check Sheet

Auditors:

Check Sheet Custodian: Custodian: UIG/P/CB

Date of Audit: Type: Ref:

Objective Evidence Y

N

Acceptable? Y

N

Remarks

Is blinding of process equipment 4.2 (vessels, columns, pipelines, flowlines, etc.) done under a Permit to Work system? Is a checklist of the status of all 4.2 spectacle or spade type blinds maintained and kept up to date in the facility register by the Asset Holders Site Representative. Is any change to the normal blind 4.2 position recorded in the ‘blind’ checklist together with the authorisation (Name and Reference Indicator) for the change and the number of the permit (if applicable)? Does the Site Operator check the actual valve status of the blinds every Doc No :IOG:115 Doc Owner: UIG/P/C Page 8 of 10

4.2 Rev: 3

Issues: 19/10/2010

Custodian: UIG/P/CB

Review: 19/10/2013




two weeks (14days)? Does the Asset Holders Site 4.2 Representative audit the blind check list status under his control every six months to ensure that the check list is up to date, and confirm that the actual position of the blinds are correct on site. In the case of removing a valve, is a 4.1 blind flange fitted to both open ends of the pipeline? Definitions

Objective Evidence: Evidence Includes data, records etc t hat shows or proves compliance to the requirements.

Acceptable: Indicates that evidence meets the required standard or judged to be in conformity with the standard�


Rev: 3

Issues: 19/10/2010

Custodian: UIG/P/CB

Review: 19/10/2013




6.0

RELATED DOCUMENTS/REFERENCES Permit to Work Procedure SEPCiN- HX -2010-0003 SPDC IOG/137

Preparation of Equipment for Work Activity

DEP 30.38.01.11-Gen. SECTION 8. Piping Components.


Rev: 3

Issues: 19/10/2010

Custodian: UIG/P/CB

Review: 19/10/2013


IOG 115-Use of Spades and Blinds

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