Waste Management of NORM Rejects and Hazardous Waste

in Offshore Oil and Gas Production in Brazil (2002–2018)

—

MARCELO M. VALINHAS

Waste Management of NORM Rejects and Hazardous Waste

SUMMARY

4 CHALLENGES TO NORM WASTE DISPOSAL

2 WASTE GENERATION

1 INTRODUCTION

3 NORM WASTE STORAGE

Oil and Gas Explorationand Production – Brazil-Campos Basin

Daily Output2.63 million barrels of oil equivalent a day. (10 thproducer in the world)

Production Wells7,265 (oil and gas)

Production Platforms113

Daily OutputOne million barrelsof oil equivalent a day.

Production Wells565 (oil and gas)

Production Platforms52

Source: www. petrobras.com.br/em/our-activities

Rio de Janeiro

Around46,000

1

0

5 000

10 000

15 000

20 000

25 000

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

Sludge Drums (E&P)

-

100 000 000

200 000 000

300 000 000

400 000 000

500 000 000

600 000 000

700 000 000

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

Oil Barrels

Oil and Sludge Production– Campos Basin

Source: ANP website, 2019 - One barrelequivalent to 42 US gallonsor 158,9873 liters

Source: SIGRE, 2019 - One drumequivalent to 140 liters

Regulations in Brazil - Clearance Level Ra 226

500

100

10 1 1

1998 2005 2012 2019

Bq

/g

CNEN - Clearance Level Ra 226 and Ra 228 (Bq/g)

Clearance level - value, established by CNEN and expressed in terms of activity concentration and/or total activity, at or below which a source of radiation may be released from regulatory control . (Source:Nuclear Safety Glossary)

RegulatoryPosition 6.02

Standard CNEN 3.01/2005

Standard CNEN 8.01/2014

First Norm Identifed

1988

Waste Management of NORM Rejects and Hazardous Waste

4 CHALLENGES NORM WASTE DISPOSAL

2 WASTE GENERATION

1 PRESENTATION

3 NORM WASTE STORAGE

SLU

DG

E

PRODUCTION

< 1 Bq/g

> 1 Bq/g

E&P Offshore Oil – Aspects and Impact

DISPOSAL

SCA

LE

GENERATION

Source: Petrobras – RT LO31/2017

Contaminated Generated Waste

0

500

1000

1500

2000

2500

3000

3500

4000

4500

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

Ton

s.

Sludge Cat.I (13%)

Sludge Cat.II (2%)

Scale (<1%)

Pipes (27%)

Equipments (3%)

Sludge (55%)

3R Waste ( 85%)

Reject ( 15 %)

Clean Service in Offshore Tanks

4,000 ton(until 2014)

CoprocessingSLUDGE

(BG)

21,000 ton

Temporary Storage

800 ton

Industrial Landfill(after encapsulation)

1,000 ton(from 2014 on)

SLUDGE CAT I (between 0.5 and 5 µS/h)

SLUDGE CAT II (higher than 5.0 µS/h)

Temporary Storage

> 1 Bq/g

< 1 Bq/g

Clean Service Generation Disposal

More then 79 thousand units

1,000 ton

760 Scale with NORM

190 ton

Recycled Pipes and Equipment

Clean Service

10,000 ton

Generation Disposal

Scrap Metal without NORM

± 11,000 ton

Temporary Storage

Disposal of GeneratedWaste (2002-2018)

21184

10301

4996

1057 765187

Sludge Pipe White Sludge (CAT I) Equipament Yellow Sludge (CAT II) Scare

Ton.

Cooprocessing

Reduction andRecycling

Reduction andRecycling

StorageDisposal or

Storage

4 PROSPECT TO NORM WASTE DISPOSAL

2 WASTE GENERATION

1 PRESENTATION

3 WASTE STORAGE

Waste Management of NORM Rejects and Hazardous Waste

Accumulated Drums in Storage Facility

0

500

1000

1500

2000

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

Stored Drums

SLUDGE CAT.I SLUDGE CAT.II SCARE

Standard CNEN 8.01/1401 Plataform

Decommission

Number of drums per Storage Facility (11)

0.41

0.26

0.49

0.15

0.74

0.35

5.26

0.65

0.41

Rate Exposure (µS/h) Radeye PRD Equipment

StorageControlled

Area

Supervised

Free Area

2.371.16

Fen

ce

2.85

Sludge Cat.I

Sludge Cat.II

scale

2005 2011 2012 2013 20142015 20152015 201720182018Monitoring Area

Radon Avarage in between 14-37 Bq/m³

Worker with TLD dosymeter

Storage Facility Control

10 5 1Rate Exposure Control by localizationRadeye PRD Equipment µS/h

Correlation External Exposure – Activity by Waste Type

µS/h

Ra

22

6 B

q/g

Sludge Cat.I

Sludge Cat.II

scale

1Bq/g

Exposure and Activity by Waste Type

3Bq/g

4 CHALLENGES TO NORM WASTE DISPOSAL

2 WASTE GENERATION

1 PRESENTATION

3 WASTE STORAGE

Waste Management of NORM Rejects and Hazardous Waste

Challenges

PRODUCTION INCREASE

PLATAFORMS DECOMMISSION

SAMPLING DRUM BY DRUM

BUILD AND LICENSING NEW FACILITY

COMMERCIAL SOLUTIONS IN BRAZIL

BEST COST TO STORE

Challenges

3bq/g1bq/g

Conditional Dispense for the lowest Activity toRa 226 in the Sludge Category I

Exportation - RFI

CONSULTING COMPANIES

NOT REPLIED

DECLINED

REPLIED

Marcelo Valinhasmvalinhas@petrobras.com.br