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ABU DHABI NATIONAL OIL COMPANY CODE OF PRACTICE ON USE OF OIL SPILL DISPERSANT ADNOC-COPV2-08 HEALTH SAFETY AND ENVIRONMENTAL MANAGEMENT MANUAL OF CODES OF PRACTICE VOLUME 2 : ENVIRONMENTAL PROTECTION

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Page 1: Use of Oil Spill Dispersant[1]

ABU DHABI NATIONAL OIL COMPANY

CODE OF PRACTICE ON USE OF OIL SPILL DISPERSANTADNOC-COPV2-08

HEALTH SAFETY AND ENVIRONMENTAL MANAGEMENT MANUAL OF CODES OF PRACTICE

VOLUME 2 : ENVIRONMENTAL PROTECTION

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RECORD OF REVISION Revision No. Date Section / Page Reason

Copyright

The copyright and all other rights of a like nature in this document are vested in Abu Dhabi National Oil Company (ADNOC), Abu Dhabi, United Arab Emirates. This document is issued as part of the Manual of HSE Codes of Practice (the “Manual”) and as guidance to ADNOC, ADNOC Group Companies and independent operators engaged in the Abu Dhabi oil & gas industries. Any of these parties may give copies of the entire Manual or selected parts thereof to their contractors implementing HSE standards in order to qualify for award of contracts or for the execution of awarded contracts. Such copies should carry a statement that they are reproduced by permission of ADNOC, and an explanatory note on the manner in which the Manual is to be used.

Disclaimer

No liability whatsoever in contract, tort or otherwise is accepted by ADNOC or any of its Group Companies, their respective shareholders, directors, officers and employees whether or not involved in the preparation of the Manual for any consequences whatsoever resulting directly or indirectly from reliance on or from the use of the Manual or for any error or omission therein even if such error or omission is caused by a failure to exercise reasonable care.

All administrative queries should be directed to the Manual of HSE Codes of Practice Administrator in: Environment Health & Safety Division, Exploration & Production Directorate, Abu Dhabi National Oil Company, P.O. Box : 898, Abu Dhabi, United Arab Emirates. Telephone : (9712) 6023782 Fax: (9712) 6668089 Internet site: www.adnoc.com E-mail: [email protected]

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CONTENTS PAGEI. PURPOSE..............................................................................................................4 II. DEFINITIONS.........................................................................................................4 III. EXISTING LAWS...................................................................................................4 1. APPROVED DISPERSANTS.................................................................................5 2. DISPERSANT EFFICIENCY CRITERIA ................................................................6 3. DISPOSAL OF OLD DISPERSANT ......................................................................7 4. WEATHER LIMITATIONS FOR THE USE OF DISPERSANTS............................8 5. TYPES OF OIL THAT CAN BE DISPERSED........................................................9

5.1 Refined Products..........................................................................................9 5.2 Crude Oils .....................................................................................................9

6. ENVIRONMENTAL CONSIDERATIONS FOR DISPERSANT USE....................11 6.1 When to Use Dispersants ..........................................................................11 6.2 When Not to Use Dispersants ...................................................................11 6.3 Resources at Risk ......................................................................................11

7. RESTRICTED USE ZONES.................................................................................13 8. AUTHORITY FOR USE OF DISPERSANTS .......................................................14

8.1 Petroleum Ports..........................................................................................14 8.2 Marine Protection Area and Inside 3NM Limit .........................................14 8.3 Other Areas.................................................................................................14 8.4 Approval Process.......................................................................................14

9. WHEN TO STOP USING OIL DISPERSANTS....................................................15 9.1 Field Testing ...............................................................................................15 9.2 Field Observations.....................................................................................15

10. MONITORING......................................................................................................16 10.1 Operational Accuracy ................................................................................16 10.2 Dispersant Effectiveness...........................................................................16 10.3 Environmental Effects ...............................................................................16

11. RECORD KEEPING.............................................................................................17 12. DISPERSANT: OIL RATIO (DOR).......................................................................18 13. REFERENCES.....................................................................................................19 APPENDIX 1: Analysis Requirements For Assessing the Dispersability of Abu

Dhabi Crude Oils ................................................................................20 APPENDIX 2 Abu Dhabi Crude Oils Requiring Analysis ......................................22 APPENDIX 3 Dispersant Use Decision Matrix.......................................................24 APPENDIX 4 Dispersant Use Request Form .........................................................26 APPENDIX 5 Area Maps of Abu Dhabi Coastal Region ........................................29

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I. PURPOSE

These Dispersant Use Guidelines have been developed to clarify and articulate the ADNOC position on dispersant use.

The ADNOC preferred response option for combating oil spilled at sea is mechanical containment and recovery. However, it is recognized that circumstances may not always allow this option to be used or in some cases the spill may be of such a magnitude that mechanical containment and recovery and dispersant operations are being conducted concurrently.

These Guidelines provide guidance on which dispersants can be used, where and when. The Guidelines are not intended to be a definitive field guide for the application of dispersants.

II. DEFINITIONS

API American Petroleum Institute

Beaufort (scale) Scale of wind speed ranging from 0 (calm) to 12 (hurricane).

Dispersant Chemical used to mitigate the polluting effects of an oil spill.

ERWDA Environmental Research & Wildlife Development Agency.

PPA Petroleum Ports Authority

Restricted Zone (for use of dispersant) A marine area in which the use of dispersant is only permitted after receiving permission from the appropriate authority.

ROPME Regional Organisation for Protection of Marine Environment

III. EXISTING LAWS The use of dispersants is currently not covered by UAE Laws & Regulations. However, the UAE is a member of the Regional Organisation for the Protection of the Marine Environment (ROPME). See Section 1.

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1. APPROVED DISPERSANTS

Only dispersants that are on the approved Regional Organisation for the Protection of the Marine Environment (ROPME) list may be used. The approved dispersant list as of January 2002 [1] is:

• Corexit 9500

• Dasic Slickgone NS

• Dispolene 34S

• Finasol OSR-52

• Gamlen OD 4000

• Inipol IP80

• Inipol IP 90

If a dispersant was previously on the approved ROPME list and was purchased, or in inventory at the time that the ROPME approval was in effect, it may be used, provided it meets the minimum effectiveness criteria outlined in Section 2 - Dispersant Efficiency Criteria. This applies to the following dispersants presently in inventory within the ADNOC Group:

• Corexit 9527

• Dispolene 36S

• Dispolene 38S

• Inipol (IPC)

If compelling scientific information comes to light that a dispersant poses a significant health or environmental hazard, a review must be conducted by the ADNOC Group HSE Committee to determine continued use of the product.

ADNOC Group Companies are encouraged to purchase their dispersant through the ADNOC Oil Spill Response Center. A written request must be submitted to the PPA Division Manager who will arrange for the necessary supply. ADNOC will purchase the replenishment stock and back charge the OPCO. This will allow for a regular rotation of the dispersant stockpile maintained by the PPA and minimize the potential of the dispersant stockpile becoming outdated and needing to be disposed of.

[1] Regional Organisation For the Protection of the Marine Environment (ROPME), 23rd Meeting of the Executive Committee, January, 2002.

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2. DISPERSANT EFFICIENCY CRITERIA

Dispersant stored in accordance with manufacturers’ instructions should not deteriorate in performance over extended periods of time. However, it is important that dispersant is tested on a periodic basis to ensure it has not lost its effectiveness. Only approved dispersants that meet a minimum standard of efficiency must be used.

Efficiency testing must be conducted utilizing the laboratory-based standard method for dispersant [2] to ensure a minimum standard of efficiency. The pass rate is set at 75% of the original minimum standard of efficiency for a Type 2 or 3 dispersant (60%). Once a dispersant has reached a level of below 45% (75% of 60%) it is no longer usable and must be disposed of [3].

Dispersant that remains in the manufacturer’s original packaging must be initially retested ten years after the original manufacture date and thereafter at five-year intervals [3]. Any dispersants that have been removed from the supplier’s original sealed containers must be tested every six months.

Dispersant testing can be arranged through the ADNOC Petroleum Ports Authority (PPA) Pollution Control Officer, who can be contacted at 9712 6025790.

[2] A Specification For Oil Spill Dispersants, Appendix A to WSL Report LR448 (revised 1990) – Warren Springs Laboratory. [3] Page 14, The Approval and Use of Oil Dispersants in the UK, Ministry of Agriculture, Fisheries and Food, 1997

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3. DISPOSAL OF OLD DISPERSANT

The disposal of old dispersant is the responsibility of the dispersant owner. The dispersant must be disposed of in an environmentally acceptable manner. Several potential options are described below.

The most common method of disposal of old dispersant is incineration. At the present time there are no facilities available in Abu Dhabi for the incineration of dispersant. It is possible to have them shipped to the United Kingdom for incineration. Details on this option can be obtained from the ADNOC PPA Pollution Control Officer. Old or waste dispersant may be considered a hazardous waste and subject to special handling and documenting requirements if being sent outside of the UAE for disposal.

Some companies are injecting old dispersant into down hole disposal wells. It may be possible to have the supplier/manufacturer take back expired or out of specification dispersant. This would need to be addressed at the tender stage.

ADNOC group companies may seek to temporarily store dispersant at the ADNOC Ruwais waste storage facility. To pursue this option, the ADNOC EH&S Division must be contacted at 9712 6024740.

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4. WEATHER LIMITATIONS FOR THE USE OF DISPERSANTS

Dispersant should not be used in wind speeds of less than Beaufort Force 3 unless there is some method of providing mixing energy to the dispersant / oil mix (i.e.: bow wave of a vessel). Dispersant should not be used in wind speeds of greater than Beaufort Force 5 [4].

Wind Speed Average

Wave Height (m) Beaufort

Scale Knots Mph M/S Km/h

Minimum Wind

Speed 3 7 8 3.4 12 0.7 - 0.9

Maximum Wind

Speed 5 21 24 10.7 38 1.7 – 2.0

[4] A Field Guide to the Application of Dispersants to Oil Spills, A. Gillot, March 1998, CONCAWE

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5. TYPES OF OIL THAT CAN BE DISPERSED

Not all oils are amenable for chemical dispersion. Lighter oils (°API ≥ 45) are non-persistent and will evaporate quickly. Heavier oils (°API ≤ 17) will not disperse readily [5]. Dispersants must only be used on oils that are dispersible. Additionally, dispersant should not be used on oil sheen.

Spilled oil will change over time as lighter ends evaporate and the oil begins to emulsify. Once oil has an °API ≤ 17, dispersants should no longer be used. As it is often difficult to measure the change in API Gravity in the field, the decision to stop dispersant spraying operations must be made based on observations or field effectiveness testing. This is described in Section 7 - When to Stop Using Oil Dispersants. The following provides general guidance on the dispersability of different oils.

5.1 Refined Products

The following table provides a list of the dispersability of fresh refined oils.

Dispersant Usage

Product Density Range API Range

Gasoline .712 - .748 67 – 58 No

JP-4 .751 - .778 57 – 50

No. 1 Fuel Oil .789 - .850 48 – 35

No. 2 Fuel Oil .806 - .922 44 - 22 Yes

No. 4 Fuel Oil .881 - .965 29 - 15

No. 5 Fuel Oil .910 – 1.061 24 - 2 No

No. 6 Fuel Oil .934 – 1.064 20 - 2

5.2 Crude Oils

Dispersants should only be used on crude oils with an API gravity of >17 but < 45. For all crude oils produced in the Emirate of Abu Dhabi, an analysis must be conducted to determine the dispersability of the crude oil (see Attachment 1). This analysis must be used to develop graphs that represent the changes that occur to the oil over time. It will provide an indicator of how long dispersants can be effectively applied to the oil.

Oil samples must be submitted to ADNOC for analysis from the following locations:

• All marine export terminals

• Each individual offshore field

[5] A Decision-Maker’s Guide to Dispersants, American Petroleum Institute, Publication Number 4692, March 1999

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Where the oil being produced from an offshore field is essentially the same oil that is being exported (there is no co-mingling of oils and there has been no addition of surface-active chemicals) only one representative sample needs to be submitted. Attachment 2 provides a list of oils produced in Abu Dhabi and requiring analysis.

The oil must be analysed for the following parameters:

• Density

• Pour point

• Emulsification tendency and stability

• Dynamic viscosity

• Interfacial tension

• Dispersability

ADNOC will arrange for this analysis to be completed and will bill the cost back to the relevant Group Companies. As the characteristics of crude oil change over time, each oil must be reanalyzed every 3 years.

In some circumstances a spill may occur where the characteristics of the oil may not be known. In this situation, a small test application of dispersant must be applied and assessed for effectiveness prior to initiating full-scale dispersant operations. This will involve one or more spraying passes, sufficient to deliver a dispersant dosage of 1:20 to the test slick. Section 10.2 describes how to evaluate dispersant effectiveness.

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6. ENVIRONMENTAL CONSIDERATIONS FOR DISPERSANT USE

The use of chemical dispersants, particularly close to shore or in shallow water often requires environmental and/or socio-economic trade-offs. Removing the oil from the sea surface and driving it into the water column may protect one resource from the effects of the oil spill but expose another. Is it better to protect mangroves or sea grass beds, marine mammals or a bird rookery?

The following are some general rules of thumb for when to use dispersants and when not to use dispersants. It must be recognized that each situation will be different and the decision-maker must conduct a rapid risk assessment to determine the best course of action regarding the use of dispersants. Attachment 3 provides a Dispersant Use Decision Matrix to assist decision-makers in determining if dispersants should be used.

6.1 When to Use Dispersants • When oil is moving toward shore and all available response methods

are required to minimize the environmental impact.

• When mechanical removal methods alone are not adequate.

• When weather/sea conditions preclude use of mechanical recovery.

• When natural dispersion is not sufficiently rapid.

• When there are large numbers of birds at risk.

• When the slick is moving toward areas of important oil-sensitive resources including harbours, mangroves, corals, areas of wildlife aggregation (e.g. bird rookeries, concentrations of birds at sea or on shore, dugong concentration areas, active turtle nesting beaches, etc.).

6.2 When Not to Use Dispersants • In very shallow water (< 5m) with poor circulation such as protected

bays and inlets.

• Near seawater intakes for cooling water or desalination plants.

• On heavy oils that are not dispersible or oils that have emulsified so badly they are no longer dispersible.

• Directly above coral.

• On oil sheen

• Where currents and winds will carry the dispersed oil into sensitive areas (i.e.: seawater intakes)

6.3 Resources at Risk

The main resources that may be at risk from an oil spill in the waters of Abu Dhabi are identified below. It is important to recognize that most of these resources are less sensitive to dispersed oil than to untreated oil. Dispersant spraying prior to oil reaching these resources may be an important strategy in

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protecting the identified resources from the effects of an oil spill. However, spraying dispersant too close to these resources may have negative consequences.

Resource Greatest Sensitivity to: Salt marshes Un-dispersed oil

Mangroves Un-dispersed oil

Coral Reefs Dispersed oil

Tidal Flats Un-dispersed oil

Sea grass Beds Un-dispersed oil

Sea Water Intakes Dispersed oil

Dugongs Un-dispersed oil

Sea Turtles Un-dispersed oil

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7. RESTRICTED USE ZONES

Dispersants must not be used within 3 nautical miles (NM) of the coast without prior approval. For the purpose of this exclusion, 3 NM begins seaward of the ordinary low water mark. This exclusion has a general correlation with the 7 – 8 meter isobaths.

Dispersants shall not be used within 1 nautical mile of any seawater intake. This includes fixed platforms and mobile offshore drilling units (MODU’s).

Dispersants shall not be used within the boundaries of a Petroleum Port without prior approval.

The Environmental Research and Wildlife Development Agency (ERWDA) have identified the Marawwah Marine Protected Area as sensitive and excluded from dispersant use.

The following maps are provided in Appendix 5:

• Figure 1: shows the identified exclusion zones for dispersant use within the Emirate of Abu Dhabi.

• Figure 2: shows a detailed map of the Marawwah Marine Protected Area.

• Figure 3: show the port limits of Jebel Dhanna / Ruwais.

• Figure 4: show the port limits of Das Island.

• Figure 5: show the port limits of Zirku Island.

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8. AUTHORITY FOR USE OF DISPERSANTS

8.1 Petroleum Ports

The authority to use dispersants within the boundary of a Petroleum Port is vested in the Petroleum Ports Officer.

8.2 Marine Protection Area and Inside 3NM Limit

Use of dispersant outside a Petroleum Port but inside the identified Restricted Zone may only be carried out with prior consultation and approval from the Environmental Research and Wildlife Development Agency (ERWDA).

Approved dispersants may be used without prior consultation inside the Restricted Zone where there is a genuine risk to human life or the safety of an installation and time is of the essence. An example of this would be a fire or explosion hazard to an installation if the oil were not dispersed immediately. The competent authority must be notified immediately in such a case and be advised that dispersants have been used.

8.3 Other Areas

Use of dispersants is pre-approved inside oil and gas concession areas if they are not inside the identified Restricted Zones and mechanical containment and recovery is not feasible.

Zone Approving Authority Special Requirements

Petroleum Port Petroleum Port Officer Conditions may be attached to approval for use form.

Marawwah Marine Protected Area

ERWDA Conditions may be attached to approval for use form.

3 nm of coastline ERWDA Conditions may be attached to approval for use form.

Oil & Gas Concession Areas

None required Notify ERWDA of use

8.4 Approval Process

The Dispersant Request Form provided in Attachment 4 must be filled out and Faxed to the appropriate Port Officer or ERWDA as soon as possible. An answer to a request to use dispersants must be provided within 2 hours of receipt of the request. If no answer is provided within this time, dispersant operations may commence without further delay.

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9. WHEN TO STOP USING OIL DISPERSANTS

There are two key methods to determine whether dispersant application is being effective; visual observation and field-testing. Each technique is briefly described below.

9.1 Field Testing • Fill a number of similar bottles to the same level with sea water

• Add a small quantity (1 ml) of the spilled oil to each bottle

• Add the same small quantity (5 drops) of dispersant to each bottle

• Mix (shake) and allow to stand for 1 minute.

• Check for the colour of the liquid (brown = good and black = bad) and the size of the droplets (the smaller the better)

• After standing for 1 hour, remix to re-disperse oil that has risen to the surface

• Evaluate the colour of the water and the adhesion of oil to the sides of the bottle

• Good re-dispersion of oil and no sticking to the sides means that even if the slick reappears because of low mixing energy conditions, it will be easily re-dispersed by the tide or by clean-up actions

9.2 Field Observations

Visual observations can be used to provide an indication of whether or not dispersion is occurring. The key indicators are described in Section 10.2 – Dispersant Effectiveness.

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10. MONITORING

Operational monitoring is a qualitative process and requires trained observers to conduct visual observations. Observation must be conducted from the air, particularly for protracted or large scale dispersant operations.

Dispersant operations must be monitored for 3 purposes; to assure operational accuracy of the dispersant application, evaluate dispersant effectiveness and identify potential environmental effects. Each of these is discussed in greater detail below.

10.1 Operational Accuracy • Is the dispersant being applied in the correct locations (only to the thick

portions of the slick)?

• Is the dispersant being applied at the appropriate dosage rate (See Section 12)?

• Are the dispersants being applied using an application of fine, even spray of droplets of appropriate size?

10.2 Dispersant Effectiveness • Dispersion of oil in the sea gives a light coloured plume through the

water column, which may range in colour from brown/orange to light grey. It may take up to 10 minutes and sometimes more before the plume appears. Observation of such a plume is the most unambiguous visual indicator that dispersion is occurring.

• Dispersant applied on clean water will produce a milky plume.

• Changes in the area and thickness of the oil slick can be indicative of effectiveness.

• Dispersion may not be instantaneous and visible changes to the slick may not be apparent for several hours, particularly on heavy or emulsified oils.

10.3 Environmental Effects

Any obvious ecological effects such as fish kills or mortality of marine mammals.

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11. RECORD KEEPING

Records must be maintained of the quantity and type of dispersant used, the application rate, the date and location of use as well as any environmental effects observed. ADNOC Group Companies must provide this information to the ADNOC Pollution Prevention Officer who must maintain a record of dispersant usage.

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12. DISPERSANT: OIL RATIO (DOR)

The dispersant to oil ratio (dispersant:oil or DOR) is the volumetric ratio of the dispersant being used to the oil being treated. A DOR of 1:20 is typically used for dispersant effectiveness testing as well as for oil spill response contingency planning purposes.

The DOR needed to disperse oil in an actual spill response will vary, depending upon the specific oil to be dispersed, its weathering state and the dispersant composition.

A fresh, easily dispersed crude oil can require significantly less dispersant (e.g. 1:100 DOR or less) than a viscous, weathered oil emulsion (e.g. 1:10 DOR) [6]. More dispersant is needed when treating a viscous emulsion.

The thickness of an oil spill is not uniform. Thicker areas of oil may require multiple dispersant applications to ensure that adequate dispersant is applied.

[6] Dispersant Guidelines, ExxonMobil, 2000

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13. REFERENCES 1. Regional Organisation For the Protection of the Marine Environment

(ROPME), 23rd Meeting of the Executive Committee, January, 2002.

2. A Specification For Oil Spill Dispersants, Appendix A to WSL Report LR448 (revised 1990) – Warren Springs Laboratory.

3. Page 14, The Approval and Use of Oil Dispersants in the UK, Ministry of Agriculture, Fisheries and Food, 1997

4. A Field Guide to the Application of Dispersants to Oil Spills, A. Gillot, March 1998, CONCAWE

5. A Decision-Maker’s Guide to Dispersants, American Petroleum Institute, Publication Number 4692, March 1999

6. Dispersant Guidelines, ExxonMobil, 2000

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APPENDIX 1: ANALYSIS REQUIREMENTS

FOR ASSESSING THE DISPERSABILITY OF ABU DHABI CRUDE OILS

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ANALYSIS REQUIREMENTS FOR ASSESSING THE DISPERSABILITY OF ABU DHABI CRUDE OILS

Three samples of each crude oil must be analysed; a fresh sample, a sample that has been weathered for 6 hours and a sample that has been weathered for 36 hours. The samples must be analysed for the following:

• Density at three temperatures; 20º C, 25º C, and 32º C. (various ASTM techniques are applicable, depending on the instrument used)

• Pour point (ASTM D-97)

• Emulsification formation tendency and stability at 20º C, 25º C, and 32º C and a salinity of 38 parts per thousand. (Using standardized techniques such as the rotating flask methods prescribed by Mackay and Zagorski 1982, and Hokstad and Daling 1993)

• Dynamic viscosity at a range of shear rates from 1 to 100 l/s at the two chosen temperatures (various ASTM techniques are applicable, depending on the instrument used)

• Interfacial tensions (oil/water and oil/air) with the range of water salinity (ASTM D-971 is the most commonly-used method)

• Dispersability using the Labofina (aka Warren Springs Lab). Test at 20º C, 25º C, and 32º C and a salinity of 38 parts per thousand using the available (or planned) chemical dispersant. The dispersability tests must be conducted on fresh oil and the emulsions created in the emulsification test (if stable).

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APPENDIX 2 ABU DHABI CRUDE OILS REQUIRING ANALYSIS

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ABU DHABI CRUDE OILS REQUIRING ANALYSIS

Facility Owner Sample Location

Bunduq Bunduq Prior to being piped to Das Island via the 18” MOL

Satah ZADCO Prior to oil being piped to Zirku Island by 14” MOL

Umm Shaif Supercomplex ADMA Prior to oil being piped to Das through the 36” MOL

Zakum Central Supercomplex ADMA Prior to oil being piped to Das through the 30” MOL

Zakum West Supercomplex ADMA Prior to oil being piped to Das through the 22” MOL

Upper Zakum Central Complex ZADCO Prior to oil being piped to Zirku through the 42” MOL

Abu Al Bukoosh TOTAL Export oil

Mubarraz CFP ADOC Prior to oil being piped to Mubarraz Island through the 14” MOL

Umm Al Anbar and Neewat Al Galan Structures

ADOC Prior to oil being piped to Mubarraz Island through the 8” MOL

Mubarraz Process Plant ADOC Export oil

Das Island ADMA Export oil

Zirku Island ZADCO Export oil

Jebel Dhanna ADCO Export oil

Al Dabbiya ADCO Gathering Center

Umm Al Anbar ADOC Prior to oil being piped to Mubarraz Island

Umm Al Dalkh ZADCO Prior to being pumped to Zakum

Upper Zakum Control Complex ZADCO Co-mingled oil from Zakum and Umm Al Dalkh, exported to Zirku

Zirku ZADCO Satah export oil after H2S has been partially removed.

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APPENDIX 3 DISPERSANT USE DECISION MATRIX

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DISPERSANT USE DECISION MATRIX

No Dispersant

Use

Disperse oil prior to it reaching the

resource(s) at risk

Operationally Feasibility

EnvironmentalConsiderations

Mechanical

PreferenceYes

Is the oildispersible?

AppropriateWeather

Conditions?

Are thefollowing resource s

at risk from the oil spill?- Seabirds, Dugongs- Tourist beaches, Salt Marshes- Shorelines - Sea Turtles- Mangroves - Tidal flats

Are seawater intakes or coral reefs at

risk in the vicinity of the proposed oil

dispersant operation?

Can oil be recovered

mechanically?

Yes

No

No

No

Yes

No

Yes

Yes

No

No Dispersant

Use

Disperse oil prior to it reaching the

resource(s) at risk

Operationally Feasibility

EnvironmentalConsiderations

Mechanical

PreferenceYesYes

Is the oildispersible?

Is the oildispersible?

AppropriateWeather

Conditions?

AppropriateWeather

Conditions?

Are thefollowing resource s

at risk from the oil spill?- Seabirds, Dugongs- Tourist beaches, Salt Marshes- Shorelines - Sea Turtles- Mangroves - Tidal flats

Are thefollowing resource s

at risk from the oil spill?- Seabirds, Dugongs- Tourist beaches, Salt Marshes- Shorelines - Sea Turtles- Mangroves - Tidal flats

Are seawater intakes or coral reefs at

risk in the vicinity of the proposed oil

dispersant operation?

Are seawater intakes or coral reefs at

risk in the vicinity of the proposed oil

dispersant operation?

Can oil be recovered

mechanically?

Can oil be recovered

mechanically?

YesYes

NoNo

NoNo

NoNo

YesYes

NoNo

YesYes

YesYes

NoNo

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APPENDIX 4 DISPERSANT USE REQUEST FORM

(WITHIN AN ENVIRONMENTALLY SENSITIVE AREA OR PETROLEUM PORT)

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DISPERSANT USE REQUEST FORM - WITHIN AN ENVIRONMENTALLY SENSITIVE AREA OR PETROLEUM PORT

Organisation 24 hour Phone Mobile Fax

ERWDA 6817171 To be confirmed 6810008

Port Officer- Jebel Dhanna / Ruwais

8772258 6139491 8772483

Port Officer - Das Island 6068403 4428903 6063302

Port Officer - Zirku 6056666 or 6056403 4451226 6056242

Page 1 of 1

1 Date and Time of Spill (local time): ____/____/___ ______

month/day/year time

2 Product type (crude oil, diesel, gasoline, etc):

3 Estimated Volume (barrels):

4 Source of Spill:

5 Is Product Easily emulsified: Yes ____ No______ Don’t know______

6 Source stopped or continuing: If continuing estimated rate of discharge (barrels/hour):

7 Location of Spill (physical location):

8 Co-ordinates: Latitude:__________°N / Longitude __________°E) Present Conditions 24 Hour

Forecast 48 Hour Forecast

(if available)

Wind Speed (Kts.)

Wind Direction (from)

Sea State

9

Air Temperature (°C)

10 Water Depth _____ meters

11 Dominant current (direction going) _______ Estimated current speed (knots) _____

12 Name of dispersant to be used: __________

13 Planned application rate for dispersant (dispersant to oil ratio) _______

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Page 2 of 2

14

Resources at Risk (check appropriate boxes and provide brief detail of location)

Salt Marshes

Mangroves

Coral Reefs

Tidal Flats

Sea grass Beds

Sea water intakes

M Responsible Party (Company):

N Contact Person: Name: ____________Position___________

Company_________ Contact #___________

P Date and Time Report Submitted: _____/____/____ ______

month/day/year time

Decision on Request to Use Dispersant

A._____ Dispersants may be applied

B______ Dispersants may be used with conditions (see attachment)

C______ Dispersants may not be used Signature of ERWDA or Port Officer Representative:_____________ Date and time of Decision: _________ Dispersant Use Conditions:

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APPENDIX 5 AREA MAPS OF ABU DHABI COASTAL REGION

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