Health Risk Assessment Report - PDO...LP Flare System, chemical injections, etc. 1.2.3 Modifications at existing facilities 1.2.3.1 Khulud EPS Facility FSW and KLD-11 re-routing to

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MAR-24-102961-HH-7180-00001-0000-JW

Printed: 05/05/2019 Printed copies of this document should be treated as information of temporary value and destroyed after use

Khulud (KLD) Phase 1 Project

Health Risk Assessment Report

Revision Record

01 20.09.2016 Issued for

Approval

Mohamed Al Busaidi MCOH5

Salter,

Elizabeth

CHSG2

Jose Petrizzo MCOH1

Rev. Date Reason for

Issue

Originator Checker/ owner Approver/custodian

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Responsible RTA’s distribution list:

Hold Record

Specify any outstanding issues in the document

Hold No. Section Description of Hold

Revision Tracking

Specify significant changes from previous revisions of the document (sorted by date)

Rev. Date Description of Revision

01 20.09.2016 Issued for Approval

User Notes:

1. A controlled copy of the current version of this document is on PDO's live link. Before making

reference to this document, it is the user's responsibility to ensure that any hard copy, or

electronic copy, is current. For assistance, contact the Document Custodian.

2. Users are encouraged to participate in the ongoing improvement of this document by providing constructive feedback.

Table of Contents

Name Function Signature

Al Azri, Hamood CGKA2

Project Engineer

Jose Petrizzo MCOH1

Sr. IH

Salter, Elizabeth CHSG2 Sr. TSE CPD

Copyright: 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.

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0. INTRODUCTION TO THE HRA REPORT 4

1. HRA SCOPE 4

2. HRA TEAM 7

3. REMEDIAL ACTIONS 8

4. HEALTH HAZARD INVENTORY AND DETAILED RISK APPRAISALS 10

5. GENERIC CONTROLS AND RECOVERY MEASURES 42

6. CONTROL STATEMENTS FOR LOW RAM HAZARDS 43

APPENDIX 1: DEFINITIONS 44

APPENDIX 2: RISK ASSESSMENT MATRIX 46

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0. Introduction to the HRA report

The Health Risk Assessment (HRA) report is used by PDO to process and store health related information.

The report starts with a description of the scope of the HRA and the persons involved in sections 1 and 2.

The remedial actions from the HRA are presented in report section 3, and are sorted by priority. Section 4

provides information from the detailed appraisals. The focus here is on High and Medium RAM rated risks.

Section 5 provides an overview of generally applicable controls and recovery measures. Section 6 lists the

status of the Low RAM rated risks that were reviewed during the HRA. The report concludes with definitions

and a diagram of the RAM risk matrix in appendices 1 and 2.

1. HRA Project Scope

1.1 Subsurface Overview

The Khulud Tight Gas Cluster comprises of the major tight gas Amin Formation discoveries of Khulud (2009), Khulud West (2010) and Khulud Northwest (2012). Main fields characteristics are: depth be-tween 4,500 and 5,000 m [14,763 and 16,404 ft] below mean sea level, average reservoir temperature 175ºC [347ºF], Amin formation thickness 200 m [656 ft], very clean not naturally fractured sandstones, dry to some wet gas, and no significant water production. Formation permeability varies from 0.001 to 0.1 milli-darcies, which dictates use of hydraulic fracturing stimulation for commercial production rates. Since discovery, the Khulud project team has embarked on an extensive appraisal and commercialisa-tion campaign. By year end of 2015, a total of 19 (16 vertical and 3 horizontal) wells were drilled to de-lineate the structures and prove commerciality, with 6 additional wells being drilled in 2016. The intense appraisal drilling campaigns from 2012 onwards has enabled the project team to delineate the discov-ered structures and resulted in a proposed phased development approach as shown on the road map depicted in the figure below.

Figure 1: Schematic Overview of Khulud Project Road map

The Khulud project will mature these multi TCF gas opportunities in a phased development. Phase 1, will deliver 2.5 MM m3/d from the crestal parts of the Khulud East and Khulud West fields by Q2 2019 with an associated Final Investment Decision by Q4 2016.

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The Phase 1 investment opportunity is a fast track development of the attic volumes in Khulud East and Khulud West fields, the sweet spots. Based on the appraisal results to date, including extended produc-tion testing, the sweet spots in Khulud have been characterized by three features, 1. Lean gas composition; 2. Better rock properties in the Upper Amin and 3. Higher gas saturation at the crest of the structure. The currently estimated resource volumes in the Phase 1 area are in the range of 10.0 BCM of Gas in

Place (GIIP). The total Expected Ultimate Recovery (EUR) scope of the Khulud Phase 1 is currently

estimated as 3.5 BCM (1.1.2016 ARPR). The Phase 1 facility is an upgrade of current Early Production

System (EPS) from overall gas capacity of 1.0 MMm3/d to 2.5MMm3/d.

1.2 Facility Overview

Khulud Gas Development Project involves the development of the Khulud Main, East and West gas producing fields. The Khulud field is a Non Associated Gas field (NAG). Phase-1 project scope (figure 1 below) is to produce sweet gas at an average annual production rate of 2.5 MSm3/d, with maximum annual average hydrocarbon liquids production predicted to reach 650m3/d. The reservoir fluids will be transported from the new and existing production wells via gathering systems to a Processing Facility in order to produce sweet gas and gross liquids prior to further processing in Yibal GGP and Yibal A re-spectively for export.

Yibal A

V-

V-3 km, 12” GRE

37 km, 18" CS

2 km 6” GREKLD East RMS

4 Wells

(8 Slots)

Inlet

Separator

Test

Separator

Utilities

Slug Catcher

V-9311

Yibal A

Production

Separator

V-0971/72

GGP

Tie- in

with

existing

Y2DC

Existing 40 km -

10” DSS

Legend

Existing Facility

GGK Contractor Scope

Off-plot Scope

7 km, 10" GRE

7 km, 6" GRE

2.1 km, 8" DSS

2.1 km, 6" DSS

5.4 km, 10" GRE

5.4 km, 6" GRE

Trunkline

Trunkline

Trunkline

Testline

Testline

Testline

Gas Export Pipeline

Liquid Export

FSW &

KLD -11

well V-2

Liquids

from GGP

KHULUD GAS DEVELOPMENT OVERALL PROCESS BLOCK DIAGRAM

Off-plot Gathering System Onplot Processing Facilities

GGKOff-plot Export System

Fahud OHL (33kV)

23 km

MRU

GSU

KLD West RMS

7 Wells

(10 Slots)

KLD Main RMS

11 Wells

(11 Slots)

Figure 2: Schematic Overview of Khulud Facility

1.2.1 Off-Plot Facilities

The Khulud off- plot facilities consist of 7 new wells in Khulud West RMS-1, 4 new wells in Khulud East RMS, 9 wells at Khulud Main RMS (6 existing + 3 being connected in year 2016 by GGE) and 2 existing wells (FSW/KLD-11) which will be rerouted from 10” DSS line to GGP to Khulud Main RMS trunkline/testline. Each new well comprising the wellhead, High Integrity Pressure Protection System (HIPPS valve only), temperature protection system, choke valve, drain pit, vent stack, hydraulics pack-age, FCS/IPS/ Fire and Gas system remote I/O’s. Each new well site is tied back to one of two new re-mote Manifold Stations (KLDE/KLDW1) through 8 inch GRE buried flowlines. Two new Remote Mani-fold Stations (RMS) and one main manifold (existing); East RMS located ~5.4 km from the GGK with 8 slots, West RMS located ~7 km from GGK with 10 slots and the Main manifold located 2.1 km from GGK (existing11 slots with 6 wells hooked-up and 3 being hooked-up) and Each RMS will comprise production and test manifolds with MOV’s, drain pit, vent stack, provision for pig launchers, provision for Mobile Well test unit and FCS/IPS/Fire & Gas system Panel. A single 5.4 km 10 inch buried GRE trunkline from the East RMS to GGK, a single 7 km 10 inch buried GRE trunkline from the West RMS to GGK and single 2.1 km 8 inch aboveground DSS trunk line from Main RMS to Khulud GGK will be con-

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structed. For test facility, single 5.4 km 6 inch buried GRE test line from the East RMS to GGK; a single 7 km 6 inch buried GRE test line from the West RMS to GGK and single 2.1 km 6 inch aboveground DSS test line from Main RMS to Khulud GGK will be constructed. A single 2.1 km 6 inch buried GRE export liquid pipeline from Khulud GGK will be tied-up to existing 40 km 10 inch buried DSS export liq-uid pipeline to GGP. A single 37 km 18 inch buried CS pipeline, including permanent pig traps will be constructed for gas export to GGP. There is also one dedicated 33 kV OHL feeder from Fahud 33 kV GIS that will be constructed to supply the new electrical loads at Khulud.

1.2.2 On-Plot Khulud gas properties from wells contain CO2 at 2 mole%, H2S 30 ppmv and Mercury 124 µg/Nm3. The Processing Facilities consists of inlet gas/liquid separation, gas treatment (mercury removal unit and H2S/CO2 Removal Unit), and incineration unit for incinerating the acid gas prior to release to the atmosphere. Gas will be exported to meet gas export specifications with CO2 at 0.5 mole %, H2S 5 ppmv and Mercury at < 5.5 μg/Nm3. The treated gas will be exported to the existing Government Gas Plant (GGP) for further treatment and the produced gross liquids will be tied into the liquids line at GGP feeding to the existing Yibal A station. Test separator will be provided for well testing. The facilities will include also utilities complex including hot oil system, instrument air, nitrogen generation system, fuel gas system, service water, drain system, LP Flare System, chemical injections, etc.

1.2.3 Modifications at existing facilities

1.2.3.1 Khulud EPS Facility

FSW and KLD-11 re-routing to Khulud Main RMS trunkline & testline to common header going to Khulud GGK.

Khulud Main RMS bulk header re-routing to Khulud production manifold at new GGK.

Khulud Main RMS test header re-routing to Khulud test manifold at new GGK.

Disconnection of existing bulk header from KLD Main RMS to existing KLD-GGP 10” DSS pipe-line.

Replacement of existing manual valves with MOV’s on production and test headers at Khulud Main RMS to enable automatic well testing.

Utility tie-ins for vent and drain.

1.2.3.2 GGP

Re-routing of existing 10” DSS liquid export KLD-GGP pipeline from V-9311 to existing 3km, 12 inch GRE, GGP-Yibal A pipeline by modification of V-9311 outlet piping.

Connecting Khulud new 18” gas export pipeline to Slug Catcher V-9311 inlet.

Existing Slug Catcher V-9311 gas outlet piping to Y2DC inlet manifold (tie-in at V-9206 inlet and V-9204 inlet) replacement from 10” to 16” followed by 14”.

Existing 6” Al-Huwaisah gas pipeline (AHW wells inlet manifold) re-routing to Khulud new Gas Export pipeline.

Start-up buy back gas tie-in from GGP 30” Gas export pipeline

Adequacy check of existing slug catcher V-9311 and 12” GGP to Yibal A pipeline

Reinstating V-9204 piping and instruments mothballed as a part of Y3DC.

Utility tie-ins for flare, drain, IA etc.

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2. HRA Team Responsible for HRA: Petrizzo, Jose MCOH1

Input Provided By: Al Busaidi, Mohamed MCOH5

Dr. Salter, Elizabeth CHSG2

Farsi, Adham CTPSG3

Falahi, Haitham CTOG6

Maloni, Achmad Farid CGKA21

Jabri, Hilal CGKA112

Al Azri, Hamood CGKA2

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MAR-24-102961-HH-7180-00001-0000-JW

Printed copies of this document should be treated as information of temporary value and destroyed after use Printed: 05/05/2019

3. Remedial Actions MCO

Priority Work Area Hazard, RAM Rating and Scenario Recommended Remedial Action

1

Khulud (KLD) Phase 1

PROJECT

General

1. Site verification is required to finalize the effectiveness of controls, recovery measures and final exposure ratings mentioned in this HRA. Resp: PSUA team + MCOH Date: Q1 2019

2. ERP to be reviewed/developed. Resp: CHSG2 Date: Q3 2017

3. Emergency safety showers & eye wash units to follow appropriate international standards (for off-plot GU-817)

T Resp: CHSG2 Date: Q2 2017

1 Psychological Hazards and Stress High

Isolation from family and friends when on

rotational duty, working on dead-lines,

pressure owning to the nature of the work

environment.

1. Written procedure/safe work practice: Confirm expectations for shift rotations and employee welfare are included in Agreements.

ACTION CLOSED

1 Ergonomics: HFE Items

RAM: Medium

1. Implement all HFE DEPs standards required by DCAF and follow all remedial actions stated in Human Factors Engineering

Screening report issued in 12/03/2015. and the updated HSE

Plan for Off-Plot. For On-Plot, ensure that the HFE requirements as stated in the Contract have been complied with [C06-01 Functional Specifications (section 16)]. Resp: CHSG2 Date: Q2 2017

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MAR-24-102961-HH-7180-00001-0000-JW


Priority Work Area Hazard, RAM Rating and Scenario Recommended Remedial Action

1

Khulud (KLD) Phase 1

PROJECT

Hydrogen sulfide containing streams with H2S

> 1000 ppm mole (600 mg/kg) or >100 ppm

vapour space (7783-06-4)

RAM: Medium

1. Ensure that HAZOP and dispersion model to identify potential high H2S identification, classification and exclusion zones, have been performed. Resp: CHSG2 Date: Q2 2017

2 Noise

RAM: Medium

1. Confirm that all equipment has been specified to produce less than 85 dBA

Resp: CHSG2 Date: Q2 2017

2 Amines – Piperazine – Sulfolane

RAM: Medium

1. Ensure unloading portable automatic pump has been included in the design. Resp: CGKA11 Date: Q4 2016 for off-plot, Q3 2017 for on-plot

2 Legionella bacteria (waterborne)

RAM: Medium

1. Process design/equipment standards: Confirm that the design of potential water sources prevents aerosols, dead legs and stagnant water. Resp: CGKA11 Date: Q4 2016 for off-plot, Q3 2017 for on-plot

3 Visible light (VL) (too much; too little) - wavelength 400 - 780 nm (non-ionizing radiation)

RAM: Low

1. For Off-Plot Process design/equipment standards - Confirm design in accordance with HFE DEP’s and FEED Emergency lightning guideline (GU/705). For On-Plot, confirm the lighting has ALARP risks. Resp: CGKA11 Date: Q4 2016 for off-plot, Q3 2017 for on-plot

3 Histoplasma Capsulatum (contact with bird

droppings)

RAM: Low

1. If there is a bird nesting problem, decide on the ALARP risk solution. Should this include installing a roof net, spikes or alarm/sirens to avoid pigeon rest and nesting, investigate the feasibility of this and undertake. Resp for bird nesting check: CHS1 Date: Q4 2019 Resp for ALARP: CHSG2 Date: Q1 2020 Resp for Netting and civil solution (an passing action to Asset): Date: CGKA13

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4. Health Hazard Inventory and Detailed Risk Appraisals

Work Area Khulud (KLD) Phase 1 PROJECT

Hazard Food and water borne pathogens

RAM: Medium

Acute Potential Health Effects

Food poisoning; hepatitis A, amoebic dysentery, giardiasis, typhoid, cholera RAM: 3D

Chronic Potential Health Effects

Carrier of disease without having symptoms RAM:

Scenario Food and/or drinking water is handled and provided to staff.

Route & Form of Exposure

Ingestion Solid and liquids

Frequency & Duration of Exposure

Exposure Limit

Exposure Rating & Justification

ALARP Status Yes

ALARP Justification Controls in place

Controls Effectiveness

Written procedure/safe work practice - Food safety management system (FSMS) aligned with HACCP is implemented.

Audits and Inspections - FSMS is audited internally and SME's conduct external audits. Process design/equipment standards - Food handling facilities are planned, designed and constructed meeting local and international best practices.

Vector control measures - Effective pest control and sanitation programs in place.

Recovery Measures Effectiveness

Medical Facilities in place, First Aid, Medical Emergency Response Plan

Remedial Actions Priority

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Hazard Infectious and venomous animal bites

RAM: Medium


Severe wounds, tetanus, rabies, poisoning, acute renal failure and anaphylactic

shock only for snakes

RAM: 4C


None known RAM:

Scenario The potential for rodents, foxes, snakes etc gaining access to camp or office areas from the surrounding environment exists.


Dermal


Exposure Limit


ALARP Status Yes

ALARP Justification Controls on place


Training and information on hazard - Contractor personnel have been informed to immediately report any sightings of animals, reptiles or rodents to the HSE focal point. All staff is made aware of requirement not to feed wild animals and to properly store and dispose of any food items.

Process design/equipment standards – fences, barriers Recovery Measures Effectiveness



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Hazard Insects, Spiders, Scorpions, Bees

RAM: Medium


Irritation, inflammation, poisoning, anaphylactic shock RAM: 3C


Allergic reaction, secondary infection, RAM: 3C

Scenario Potential exposure to bites of insects, spiders, scorpions and bees exits due to location of work activities.


Dermal


Exposure Limit


ALARP Status Yes



Training and information on hazard - Staff are advised to check empty boots before wear and to be careful when moving objects i.e. small rocks.

Process design/equipment standards – fences, barriers Recovery Measures Effectiveness



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Hazard Legionella bacteria (waterborne)

RAM: Medium


Pontiac fever (mildest form of infection); Legionairres' disease - pneumonia (severest form of infection - may be fatal) RAM: 4B


Effects on lung function RAM: 3B

Scenario Domestic water systems, safety showers and eye wash stations are potential source of exposure.


Inhalation Liquid


Exposure Limit PDO PR-2109


ALARP Status No

ALARP Justification Site verification required

Controls: Procedures in place to be applied during operations. Effectiveness

Local Control - A focal point has been appointed to implement a Legionella management procedure for site potable water sources. A schedule for cleaning and disinfection of shower heads and water fountains are implemented and maintained.

Process design/equipment standards – Biocide control, filters, pipeline design. Preventive maintenance - A regular preventative maintenance and inspection program on equipment that may harbour Legionella is implemented and includes all activities with regard to water systems, such as inspection, periodic flushing, cleaning, maintenance and application of biocides. Eye wash stations and safety showers are flushed weekly during routine inspections. Records of all activities are available on maintenance schedule.




1. Process design/equipment standards: Confirm that the design of potential water sources prevents aerosols, dead legs and stagnant water.

2

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Hazard Histoplasma Capsulatum (contact with bird droppings)

RAM: Low


Histoplasmosis, primary risk is to persons with impaired immune systems RAM: 3B


Not Known

Scenario During routine presence in the plant


Inhalation Solid


Exposure Limit


ALARP Status No ALARP Justification Controls need improvement Controls Effectiveness

Ensure Process design/equipment to international standards as specified in C06-01 Functional Specifications (section 16).

Written procedure/safe work practice –A maintenance program should be in place. Recovery Measures Effectiveness


Remedial Actions Priority 1. If there is a bird nesting problem, decide on the ALARP risk solution. Should this include installing a roof net, spikes or alarm/sirens to avoid pigeon rest and nesting, investigate the feasibility of this and undertake.

3

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Hazard Psychological Hazards and Stress

RAM: High


Stress symptoms like headaches, high blood pressure, sleep disturbance,

irritability, Chest pain, Difficulty breathing, Severe pain, Symptoms of shock

(shallow breathing, rapid or weak pulse, nausea, shivering, pale and moist skin,

mental confusion, and dilated pupils), Fatigue, Nausea/vomiting, Dizziness,

Profuse sweating, Thirst, Visual difficulties, Clenching of jaw, Nonspecific aches

and pains

RAM: 2D


Anxiety, depression, severe gastrointestinal symptoms, heart attack

RAM: 4D

Scenario Isolation from family and friends when on rotational duty, working on dead-lines, pressure owning to the nature of the work environment.



Exposure Limit


ALARP Status Yes after action has been closed

ALARP Justification Site verification of controls required


Stress - generic organisational controls - Clear organisational structure and reporting lines; job descriptions, competence framework and work plans linked to roles and responsibilities.

Stress - generic personal controls - Time management, appraisal and performance management, physical exercises etc

Local Control - Shell Health resilience program or equivalent implemented for project team.


Stress - generic recovery measures - Psychological counseling available on referral by physician.


1. Written procedure/safe work practice: Confirm expectations for shift rotations and employee welfare are included in Agreements.

ACTION CLOSED

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Hazard Heat Stress / Hot Temperature Differentials

RAM: Medium


Heat stroke leading to death (lesser symptoms: exhaustion, cramps, rash, fatigue) RAM: 4C


Dermatitis RAM: 2C

Scenario Exposure to heat when working outdoors, typical ranges are from 32-40 degrees Celsius.



Exposure Limit TWL Abu Dhabi EHS


ALARP Status Yes

ALARP Justification Site verification of controls and recovery measures required


Administrative controls, such as area restrictions and limited schedules - Scheduling of work to avoid peak heat times especially during the month of Ramadan (i.e. start work early in the morning and finish earlier). Chilled drinking fluids should be provided, with volume of consumption guidance. Shaded rest areas shall be positioned strategically.

Written procedure/safe work practice - Heat illness prevention procedure is implemented and specifies a work rest regime, approved by Occupational Health.

Local Control - Sheltered/shaded areas available. Fans or air blowers provided where feasible to provide air movement.

Training and information on hazard - Site induction includes heat stress awareness to all workers, rotators, visitors and the importance of acclimatization underscored.




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Hazard Ultra violet light (UV) - wavelength 100 - 400 nm (non-ionizing radiation)

RAM: Medium


Skin burns, erythema (reddening of the skin) and darkening of the skin.

Photokeratitis (painful condition caused by the inflammation of the cornea of the

eye). Conjunctivitis (inflammation of the conjunctiva). Eye disorders with pain

and discomfort ("flash burn", "arc eye", "snow blindness")

RAM: 2C


IARC 1 - Human carcinogen (skin cancer). Skin aging. May cause pterygium,

cataracts and macular degeneration

RAM: 4B

Scenario Direct sun exposure in outdoor work environment.



Exposure Limit ACGIH TLVs


ALARP Status Yes

ALARP Justification Controls in Place


Shelter space designed within the site in accordance with C06-01 Functional Specifications (section 16).

Training and information on hazard - UV prevention training provided to all staff (toolbox talks, HSSE meetings, posters etc)




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Hazard Visible light (VL) (too much; too little) - wavelength 400 - 780 nm (non-ionizing radiation) RAM: Low


Eyestrain, headaches, decreased efficiency, increase in work errors. RAM: 1C


High levels of exposure to blue or visible light may cause ocular damage, especially later in life, and may be related to the development of age-related macular degeneration. RAM: 2A

Scenario Route & Form of Exposure


Exposure Limit ACGIH TLVs


ALARP Status No ALARP Justification Site verification of controls required Controls Effectiveness

Training and information on hazard and task - adequate information and training on possible health effects of exposure to chemicals and how to handle them safely

Safety Manual, Written protocols



Remedial Actions Priority 1. For Off-Plot Process design/equipment standards - Confirm design in accordance with HFE DEP’s and FEED Emergency lightning guideline (GU/705). For On-Plot, confirm the lighting has ALARP risks.

3

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Hazard Noise

RAM: Medium


Loud steady noise: temporary threshold shift. Impact noise: rupture of eardrum; acoustic trauma. RAM: 2C


Noise induced hearing loss (permanent threshold shift); tinnitus (ringing in ears) RAM: 2D

Scenario Exposure to plant noise and equipment.



Exposure Limit 85 dB(A)


ALARP Status No

ALARP Justification Verification of controls required


Training and information on hazard - should consider noise induced hearing loss prevention training.

Written procedure/safe work practice - Prevention of noise induced hearing loss should be managed in accordance with the company hearing conservation plan approved by PDO Head Occupational Health.

Process design/equipment standards - noise limits were included in the weighted selection criteria for high noise producing equipment i.e. 85dBA.




1. Confirm that all equipment has been specified to produce less than 85 dBA

1

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Hazard Hand/Arm Vibration

RAM: Medium


Muscular discomfort, fatigue and tingling in the hand or arms RAM: 1D


Muscular-skeletal disorders, vibration white finger RAM: 3D

Scenario While handling clutch. Route & Form of Exposure

Energy interaction


Exposure Limit PDO SP-1231


ALARP Status Yes ALARP Justification Controls in place Controls Effectiveness

Administrative controls, such as area restrictions and limited schedules - Periodic break part of job routine.

Training and information on hazard - Adequate hazard information and training should be considered.

Ensure a preventive maintenance - Preventive equipment maintenance to minimize level of vibration being carried out.

Process design/equipment standards according to C06-01 Functional Specifications (section 16).


Medical Facilities in place, First Aid, Medical Emergency Response Plan Remedial Actions Priority

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Hazard Whole Body Vibration

RAM: Medium


Muscular discomfort or fatigue, or tingling or numbness in the body RAM: 1D


Lower back pain or lower lumbar disorders RAM: 3D

Scenario While driving cranes/forklifts etc. Route & Form of Exposure

Energy interaction





Administrative controls, such as area restrictions and limited schedules – should be considered.

Training and information on hazard - Adequate hazard information and training should be provided.

Ensure preventive maintenance - Preventive equipment maintenance to minimize level of vibration being carried out.


Medical Facilities in place, First Aid, Medical Emergency Response Plan Remedial Actions Priority

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Hazard NORM

RAM: Medium


Cell damage e.g. skin burns, sickness, loss of hair - potentially fatal RAM: 3B


Human carcinogen (IARC 1), Damage to reproductive system and blood cells. RAM: 4B

Scenario During maintenance operations to wells Route & Form of Exposure

Dermal Contact, inhalation Solid, gas





Hazard identification by signs/warnings/labels - Radioactive source containers always carry standard 'Radiation Hazard Warning' label.

Training and information on hazard - Operators have appropriate level of hazard information and training.

Training on task/skill - operators are skilled and certified as competent on their jobs. Monitoring: Personal Measurements - Operators have instruments to ensure exposures are not above threshold limit values.

Written procedure/safe work practice - There is written procedure in the form of 'Procedure for Handling Radioactive Source' to guide safe tasks performance.




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Hazard Mercury (7439-97-6)

RAM: Medium


Acute poisoning, neurological effects RAM: 3B


Effects on kidneys and central nervous system, emotional and psychological disturbances, effects on reproduction. RAM: 3C

Scenario Breakage of mercury containing equipment and subsequent cleanup. Thermometers and Brookfield meter. Digestion Solution for COD contains mercury - samples are heated to 140C.


Inhalation and Contact Liquid


Exposure Limit 0.025 mg/m3


ALARP Status Yes

ALARP Justification Controls in place but Site verification of controls is required


Process design/equipment standards - Good engineering design practice in accordance with C06-01 Functional Specifications (section 16).

Mercury Disposal in accordance to SP-2087 & PR-1515


Spill clean-up kit - Mercury spill kit present in lab.



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Hazard Natural Gas Condensate RAM: Medium


Irritation of the eyes and respiratory tract, CNS depression RAM: 2C


Human carcinogen (IARC 1), damage to bone marrow and immune system, dermatitis. RAM: 4B

Scenario During field operations sampling Route & Form of Exposure

Inhalation, contact dermal Vapor


Exposure Limit PDO SP-1231 CONTROL BANDING


ALARP Status Yes ALARP Justification Controls in place but Site verification of controls is required Controls Effectiveness

Training and information on hazard and task - adequate information and training on possible health effects of exposure to chemicals and how to handle them safely should be considered.


Sampling type based on standard requirements: C06-01 Functional Specifications

(section 16).

Hazard identification by signs/warnings/labels - Equipment and lines labeled in accord-ance with C06-01 Functional Specifications (section 16).





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Hazard Amines [monoethanol amine (MEA), methyl diethanolamine (MDEA)

RAM: Medium


Severe eyes, skin and respiratory tract irritant. Absorbed through skin, narcotic effects RAM: 3B


Skin and respiratory sensitizer; repeated overexposure may produce liver, kidney damage. Some amino (n-nitro) / (quinone) / (azol) mixs are according to RoC U.S. HHS - Reasonably anticipated to be a human carcinogen RAM: 3C

Scenario During additivation in production activities Route & Form of Exposure

Inhalation, Dermal Liquid


Exposure Limit 3 ppm


ALARP Status No ALARP Justification Controls need improvements. Controls Effectiveness



SHOC cards/SDS. Sampling type based on standard requirements: C06-01 Functional Specifications (section 16).

Storage and injection system for chemicals referred to in C06-01 Functional Specifications (section 16).


Medical Facilities in place, Firs Aid, Medical Emergency Response Plan

Remedial Actions Priority 1. Ensure unloading portable automatic pump has been included in the design. 2

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Hazard Piperazine

RAM: Medium


Corrosive to eyes, skin and respiratory tract. Can be fatal by inhalation or skin absorbtion. Can effect liver, kidney or CNS. RAM: 4B


IARC 2B - Possible human carcinogen, skin sensitizer, damage to liver, kidney and CNS. Suspected Development and Reproductive human Toxicant RAM: 4B

Scenario 1. During manual injection for PH control

2. Fugitive emissions, spills of during make-up of amine to gas sweetening unit (GGL)




Exposure Limit 0.01 ppm






SHOC cards/SDS. Sampling type based on standard requirements: C06-01 Functional Specifications

(section 16).




Remedial Actions Priority 1. Unloading portable pump must be automatic 2

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Hazard Sulfolane

RAM: Medium


May be harmful if swallowed RAM: 2B


May damage fertility, and the unborn child RAM: 4B

Scenario Gas treatment process chemical Route & Form of Exposure



Exposure Limit PDO SP 1231 CONTROL BANDING






SHOC cards/SDS. Sampling type based on standard requirements: C06-01 Functional Specifications

(section 16).




Remedial Actions Priority 1. Unloading portable pump must be automatic 2

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Work Area

Hazard Mono Ethylene Glycol (MEG) RAM: Medium


Severe eyes irritant, mildly irritant to skin, moderately irritant to lungs. May affect CNS, liver and kidneys RAM: 3C


Damage to kidneys. Recognized human reprotoxic substances RAM: 3C

Scenario Production Operators and Maintenance staff have the potential for exposure for EG that is a recognized reprotoxic substance.


Dermal Liquid


Exposure Limit EG: Ceiling: 100 mg/m3 .


ALARP Status Yes

ALARP Justification Conventional Controls in place Controls Effectiveness

Process design/equipment international standards in accordance with C06-01 Functional Specifications (section 16).

Hazard identification by signs/warnings/labels - PDO requires SHOC cards to be available and displayed where product is stored.




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Hazard Simple Asphyxiants- Nitrogen, Inert Gases, Oxygen Depletion, and Gas

Releases

RAM: Medium


Chemical asphyxiant RAM: 4C


Scenario During analysis task Route & Form of Exposure

Inhalation Gas


Exposure Limit






SHOC cards/SDS. Recovery Measures Effectiveness

Medical Facilities in place, Firs Aid, Medical Emergency Response Plan, Safety Showers and eye washer


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Hazard Oxygen concentration in air (in balance) RAM: Medium


Asphyxiation due to displacement of oxygen, addressed in safety case RAM: 4C


None known



Exposure Limit 21.8%






Hazard identification by signs/warnings/labels - Equipment and lines labeled in accordance with C06-01 Functional Specifications (section 16).




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Hazard Carbon monoxide (Gas) RAM: Medium


Inhalation: VERY TOXIC. Can harm the blood (decreased ability to carry oxygen carboxy - haemoglobinemia) and cardiac disorders . . Symptoms may include headache, nausea, dizziness, drowsiness and confusion. May cause permanent damage to organs including the brain and heart. Can be fatal Skin Contact: Not irritating. Direct contact with the liquefied gas can chill or freeze the skin (frostbite). RAM: 4C


EU Risk Category 1 - Teratogen: may cause harm to unborn child. RAM: 4B












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Hazard Hydrogen sulfide containing streams with H2S > 1000 ppm mole (600

mg/kg) or >100 ppm vapour space (7783-06-4)

RAM: Medium


Chemical asphyxiant causing respiratory paralysis, irritant; unconsciousness, fatality RAM: 4C


Damage to nasal tissues. RAM: 2B

Scenario The scale of a toxic impact from high pressure, high-% H2S leaks is very significant.


Inhalation Gas


Exposure Limit TWA: 5 ppm / STEL: 10 ppm


ALARP Status No

ALARP Justification Verification of controls required



Written procedure/safe work practice - Confined space entry procedures in place (PR-1148) Activity takes place under PTW procedure.

Training and information on hazard - H2S training schedule in place for all staff and visitors. Schedule includes H2S awareness and escape and H2S awareness and escape for sour sites, both with a validity period of 2 years.




1. Ensure that HAZOP and dispersion model to identify potential high H2S identification, classification and exclusion zones, have been performed.

2

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Hazard Sulfur dioxide (SO2) RAM: Medium


Corrosive to eyes and lungs. Inhalation can produce asthma-like reactions, reflex spasm of the larynx and respiratory arrest to fatality RAM: 4C


Respiratory sensitizer, Asthma. Suspected reprotoxic substance. RAM: 3C





ALARP Status Yes ALARP Justification Verification of controls required Controls Effectiveness

Apply process design/equipment standards - Good engineering design practice in accord-ance with C06-01 Functional Specifications (section 16).

Ensure Hazard identification by signs/warnings/labels - Equipment and lines labeled in accordance with C06-01 Functional Specifications (section 16).






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Work Area/Job Khulud (KLD) Phase 1 PROJECT

Hazard Combustion particulates/toxic smoke

RAM: Medium


Irritation of eyes and respiratory tract. RAM: 2C


Probably carcinogenic to humans (IARC 2A) RAM: 4B

Scenario Exposure during outdoor working. Route & Form of Exposure

Inhalation, contact Particle


Exposure Limit


ALARP Status Yes ALARP Justification Open space, natural ventilation, flare designed far from location Controls Effectiveness

Engineering controls: C06-01 Functional Specifications (section 16) in place.

Local control – natural open spaces Recovery Measures Effectiveness



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Hazard Unknown chemicals during an emergency

RAM: Medium


Various including irritation, asphyxiation, burns (if corrosive) RAM: 4B


Dependant of the chemical potential damage (systemic, carcinogen). RAM: 4B

Scenario During an emergency (fire, reactions, combustion) Route & Form of Exposure

Inhalation Gas


Exposure Limit







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Hazard Motor Oils, Used

RAM: Medium


Irritant to eyes and respiratory tract if mist is inhaled RAM: 2B


Contact dermatitis, skin carcinomas based on potential presence of PCAH RAM: 4B

Scenario During change-out of used oil. Route & Form of Exposure

Splash, Dermal, Inhalation Liquid


Exposure Limit


ALARP Status Yes ALARP Justification Controls in place. Controls Effectiveness


SHOC cards/SDS. Training and information on hazard - Adequate hazard information and training on toxicology and preventive measures put in place provided.




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Hazard Man made or synthetic vitreous fibers

RAM: Medium


Irritant to skin and respiratory tract RAM: 2B


IARC 2B - Possible human carcinogen. Chronic persistent inflammation and fibrosis. RAM: 4B

Scenario Used for equipment’s insulation-isolation


Inhalation


Exposure Limit 5 mg/m3


ALARP Status Yes





Hazard identification by signs/warnings/labels –according to international standards. Recovery Measures Effectiveness



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Hazard Manual Handling - Lifting, Lowering, Pushing, Pulling,

Hand/Wrist/Grasping/Pinching/Holding/Repetitive Use

RAM: Medium


Acute strain or sprain to muscles and joints RAM: 3C


Chronic musculo-skeletal disorders RAM: 3D

Scenario Movement of equipment and materials.



Exposure Limit


ALARP Status No



Process design/equipment standards - Design include C06-01 Functional Specifications (section 16).

Training and information on hazard - Correct lifting procedures are communicated to staff. Ensure the availability of mechanical lifting devices if required.




1. Implement all HFE DEPs standards required by DCAF and follow all remedial actions

stated in Human Factors Engineering Screening report issued in 12/03/2015. and the

updated HSE Plan for Off-Plot. For On-Plot, ensure that the HFE requirements as stated in the Contract have been complied with [C06-01 Functional Specifications (section 16)].

1

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Hazard RSI Risk from Computer/Display Screen Equipment

RAM: Medium


Muscular discomfort; eyestrain; soreness to soft tissues (e.g. wrist) RAM: 1D


Work-related upper limb disorders, repetitive strain injury RAM: 3D

Scenario Use of personal computer and mouse during preparation of menus, placement of orders and normal administrative duties.



Exposure Limit


ALARP Status No

ALARP Justification Site verification of controls and recovery measures required


Ergonomic workplace assessment - HFE screening for project and control room to be im-plemented by HFE professional and results of analysis implemented for FEED.

Administrative controls, such as area restrictions and limited schedules - Rotation sched-ule should be considered.

Ensure the availability of ergonomic accessories & software - Laptop accessories. Training and information on hazard - Awareness training (explaining what RSI is and how it can be prevented).







1

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Hazard Awkward Posture - Unavoidable, sustained, long-term awkward posture of

the shoulder, neck and back

RAM: Medium


Muscular discomfort or fatigue, strain or sprain RAM: 3C


Chronic musculo-skeletal disorders of the shoulder neck or back RAM: 3D

Scenario Exposure when holding neck in an awkward position and bending at the waste when using personal computers.



Exposure Limit


ALARP Status No



Administrative controls, such as area restrictions and limited schedules - Adequate work-rest cycles should be considered to reduce frequency and duration.

Process design/equipment standards - Design include C06-01 Functional Specifications (section 16).

Training and information on hazard - Behavioral safety techniques, as applicable is communicated by HSE Department to all admin staff.


Medical Facilities in place, Firs Aiders, Medical Emergency Response Plan





1

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Hazard Kneeling, Squatting, Standing on 1 leg, Contact Stress on legs due low

and high walking displacement

RAM: Medium


Muscular fatigue or discomfort, may include numbness in the legs RAM: 1C


Lower body joint disorders RAM: 3D

Scenario During equipment maintenance and parts change out. Route & Form of Exposure


Exposure Limit


ALARP Status No ALARP Justification Site verification of controls required Controls Effectiveness

Training and information on hazard - Adequate hazard information and training on prevention of RSI shall communicate to all users.


Medical Facilities in place, Firs Aiders, Medical Emergency Response Plan Remedial Actions Priority




1

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5. Generic Controls and Recovery Measures



Regulations, standards, specifications and procedures to be applied to the project

On-plot should follow C06-01 Functional Specifications (section 16).

Off-plot should follow Shell DEP’s and PDO Specifications.

Energy efficiency in equipment & technology

Incorporate Lessons learned

Have experienced resources

Written procedure/safe work practice - Site induction training procedure is in place which is mandatory for all workers attend prior to commencing work. Life critical activities have been identified and is communicated to all staff through awareness campaigns, posters etc

Written procedure/safe work practice - Alcohol and drugs policy is implemented.

Local Control - A Permit to Work (PTW) system is in place.

Written procedure/safe work practice - Chemical compatibility matrix developed.

Hazard identification by signs/warnings/labels - The SDS sheets for all chemicals are available with UIK1 – production chemistry and can be provided as requested. The SDS sheets contain all information regarding the chemical including: Chemical product and company identification Composition/ information on ingredients Hazards identification First aid measures Fire fighting measures Accidental release measures Handling and storage Exposure controls/ personal protection Physical and chemical properties Stability and reactivity Toxicological information Ecological information Disposal considerations Transport information Regulatory information Other information

Hazard identification by signs/warnings/labels - SHOC cards for all chemicals are provided in PDO Chemical Requirements Report

Written procedure/safe work practice - PDO Chemical Requirements Report provides personal protective equipment (PPE) requirements when handling chemicals under normal unconfined conditions.

Process design/equipment standards - Sampling points will be located at ground level.. The location of sampling points and types is specified in the project.

Written procedure/safe work practice - waste management is managed in accordance with PDO standards.

Recovery Measures

First aid and Medical emergency response - Medical Emergency Response Plan with tiered response and a Health Hazards Monitoring Plan available and approved by PDO Head of Occupational Health.

Effectiveness

Emergency response procedures - PDO Chemical Requirements provides personal precautions and methods for cleanup of hazardous chemical substances in case of accidental release.

To be Reviewed

Safety Showers/eyewash To be reviewed

Remedial Actions

See section 3 Priority

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6. Control statements for Low RAM Hazards

Work Area Hazard CONTROLS NEED IMPROVEMENT? MORE DETAILED ASSESSMENT?

Khulud (KLD) Phase 1 PROJECT

Sexually Transmitted Diseases (other than HIV)

No

Histoplasma Capsuatum Yes

Work Environment - Indoor climate No

Work Environment – Nuisance noise such as from open plan office.

No

Fungus/mold growth, or bioaerosols

No

Visible light (too much; too little) - wavelength 400 - 780 nm (non-ionizing radiation)

Yes

Infrared (IR) – wavelength 780 1 mm (non-ionizing radiation)

No

Extremely Low Frequency magnetic radiation (ELF) - wavelength: > 30 km (non-ionizing radiation)

No

Radiowave/Microwave radiation - wavelength 1 mm - 30 km (non-ionizing radiation)

No

Solvents / Degreasers No

Methanol No

Particulates (total, not classified) No

Hydrocarbon Gas (EP), Hydrocarbons Light (<C5's),

No

Detergents No

Hydrocarbons, VOC (total vapor) No

Lubricating Oils, C16-C35 Hydrocarbons (includes oil mist and glycerin) and Greases (< 3%PCAH Content). Includes oil mist and glycerin

No

Dielectirc Oils/ Fluids No

Refrigerants No

Antifoam No

Biocide – water treatment No

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Appendix 1: Definitions Acute Health Effect Health Effect that occurs immediately or a short time (seconds to hours) following exposure, such as heat stroke, chemical burns and asphyxiation. Agent See Hazard ALARP - As Low As Reasonably Practicable The point at which the cost (in time, money and effort) of further Risk reduction is grossly disproportionate to the Risk reduction achieved. Barrier A Risk Control or a Recovery Measure. Barriers provide the means of preventing an Event or Incident, or of mitigating the Consequences. A Barrier can be an item of equipment or a human intervention, and can also be a Control on an Escalation Factor. Chronic Health Effect Health Effect that occurs gradually over a long period of time (months or years), generally following repeated and prolonged exposure. In specific cases a short term exposure may result in a chronic health effect. Consequence An Effect on people, assets, the environment or reputation as a result of a Hazard being released. Control A means of preventing an Incident. Controls can be engineering, procedural or behavioral. Critical Activity An activity necessary for the development, implementation or maintenance of a Barrier established for managing Hazards with RAM red Risks. Effect The Consequence of the release of a Hazard. Escalation Factor A situation, condition or circumstance that may lead to the partial or full failure of a Barrier. Event An Incident that occurs when a Hazard is released. Exposure Limit The airborne concentration of chemical agents and levels of physical agents to which nearly all workers may be repeatedly exposed day after day without adverse Effect. Exposure Rating The chance of over-exposure to a health hazard when compared against agreed control standards. The exposure rating is evaluated as Very Low, Low, Medium or High. Hazard An agent with the potential to cause harm to people, damage to Assets, or an Impact on the environment or reputation. Health Hazard A factor of a physical, chemical, biological, ergonomic or psychological nature with the potential to cause harm to the health of people.

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HRA - Health Risk Assessment A process of identifying, evaluating, controlling and managing Health Risks, associated with work to prevent acute and chronic health Effects. Incident An unplanned Event or chain of Events that has, or could have, resulted in injury or illness or damage to Assets, the environment or reputation. Likelihood The probability that a specified Consequence will happen. OEL – Occupational Exposure Limit The airborne concentration of chemical agents and levels of physical agents to which nearly all workers may be repeatedly exposed day after day without adverse effect. RAM - Risk Assessment Matrix A tool used to assess the Consequences and Risks of Hazards to HSSE. The results are referred to as a RAM Severity rating and a RAM Risk rating. Recovery Measure A Barrier that reduces the Consequences of the release of a Hazard as a result of an Incident. Recovery Measures can be engineering, procedural or behavioral measures. Remedial Action Plan RAP - A Plan to implement corrective action items. Risk The combination of the Consequence of a specific Hazard being released and the Likelihood of it happening. Risk Assessment The process of identifying the Consequences of the Worst Case Credible Scenario arising from the release of a Hazard, and estimating the Likelihood of that scenario. Severity A level of Consequence on the RAM on a scale of 0 to 5. TBD To be determined.

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Appendix 2: Risk Assessment Matrix

Documents

Health Risk Assessment Report - PDO...LP Flare System, chemical injections, etc. 1.2.3 Modifications at existing facilities 1.2.3.1 Khulud EPS Facility FSW and KLD-11 re-routing to