Oil & Gas UK

Supplementary Guidance On The RIDDOR Reporting Of Hydrocarbon

Releases

• Guidance• Assessment Tool• Presentation + Notes

Deliverables

• Produce supplementary guidance that is– Fully aligned with RIDDOR 2013 requirements– Well-understood by the industry– Consistently applied by the industry

• Primarily focussed on petroleum hydrocarbon releases• Also includes assessment on non-petroleum

hydrocarbon releases

Objectives of Workgroup

Petroleum Hydrocarbon Releases

Number of releases

Reportable Limit

Major

Significant

Minor

Not Reportable

2014 Guidance

Previous Guidance

Reportable Limit

• Regulatory Requirements– Review of DO relating to Hydrocarbon Releases (HCR)

• Methodology for Assessing RIDDOR Reporting of Petroleum Hydrocarbon Releases– Define key words and phrases– Reporting flow chart

• Technical Assessment– Defines Reportable Limits

• Case Studies– Worked Examples

• Appendices– Consequence Analysis– Application of Methodology to Non-Petroleum Hydrocarbon Fluids– High Water Content Liquids

Structure of Guidance

Release of petroleum hydrocarbon

75 The unintentional release of petroleum hydrocarbon on or from an offshore installation which –

(a) results in –

(i) a fire or explosion; or

(ii) the taking of action to prevent or limit the consequences of a potential fire or explosion; or

(b) could cause a specified injury to, or the death of, any person.

Regulatory Requirements – RIDDOR 2013

• Petroleum Hydrocarbons– Well Fluids, Natural Gas, Natural Gas Liquids, Condensate,

Crude Oil

• Continuous & Discrete Releases• Gas, Vapour, Mist, Liquid• Consequence Analysis

– Continuous Release - Jet Fire– Continuous Release - Pool Fire– Discrete Release - Fireball– Discrete Release - Pool Fire– Flash fire, Explosion, Toxic Cloud, Asphyxia, Narcosis - See

Guidance

Technical Assessment – Potential for Death or a Specified Injury

RIDDOR DO 75 Assessment Flowchart

Confirmed?

Unintentional?

Release ofPetroleum

Hydrocarbons?

Fire or Explosion?AutomaticExecutive Action?

OtherAction & Potential

for Death or a SpecifiedInjury?

HCR is RIDDORDO 75 Reportable

HCR is NOT RIDDORDO 75 Reportable

No

No

No

No No No

Yes

Yes

Yes

Yes Yes Yes

Reportable Limits

Type of Release Phase Hazard Fluid Reportable Limit

Continuous

Gas / Vapour / Mist Jet Fire

Natural GasNatural Gas Liquids

CondensateCrude Oil

3 kg/hour(0.0008 kg/s)

OR20% LFL at 0.5 m

Liquid Pool FireNatural Gas Liquids

CondensateCrude Oil

100 kg/hour(0.028 kg/s)

Discrete

Gas / Vapour / Mist Fireball

Natural GasNatural Gas Liquids

CondensateCrude Oil

0.15 kg

Liquid

Pool Fire Natural Gas Liquids 3 kg

Pool Fire Condensate 10 kg

Pool Fire Crude Oil 30 kg

Regulatory Requirements

Unignited Release RIDDOR 2013Dangerous Occurrence

RIDDORReportable Limit OIR/12

Wells DO 20 No All releases

Pipelines DO 21 Yes(See HSE Website)

Only if release is within 500m zone

Release of petroleum hydrocarbons DO 75 Yes

(See Sections 3 & 4)All RIDDOR DO 75 reportable releases

Release of non-petroleum hydrocarbons DO 77 Yes

(See Section 5) Not required

Ignited Release RIDDOR 2013Dangerous Occurrence

RIDDORReportable Limit OIR/12

Wells DO 20 No All releases

Pipelines DO 21 No Only if release is within 500m zone

Release of petroleum hydrocarbons DO 75 No All fires & explosions

Release of non-petroleum hydrocarbon fluids DO 76 No Not required

• Go Live 1 April 2014– Guidance– Assessment Tool– Presentation + Notes

• Feedback Workshop October 2014– Usability of Guidance– Requirement for further guidance– Additional Examples

• Assess impact of EU Offshore Safety Directive– April 2015 (subject to HSE guidance availability)

Forward Plan

Guidance on Hydrocarbon Release Reporting