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Email: info@otkltd.com

Tel: 234 (0) 8093563356, +234(0) 8060156326
UK: +44(0)1224966159; +447869107574

Our Services

Technical Safety

Workshop Facilitation

Technical review workshops are necessary for all engineering design projects and in some cases following a major incident event. The objectives of these technical reviews are to highlight or classify significant issues which may have been otherwise overlooked. It is important that such review sessions are led by a strong chairperson with working knowledge of the issues and understanding of the review process. OTK are able to provide such candidates.
We have a selection of dedicated Chairpersons with significant industry experience able to facilitate workshops. Our Chairpersons have a history in executing and coordinating the following workshops:

  • Hazard Identification Tools (HAZID)
  • Hazard and Operability (HAZOP techniques)
  • Offshore Activities Risk Assessment Review
  • Safety Integrity Level (SIL Assessments)
  • Layers of Protection Analysis (LOPA)
  • Failure Modes Effects and Criticality Analysis (FMECA)
  • Reliability Operability Maintenance (ROM)
  • Environmental Identification (ENVID Workshop)
  • Best Available Techniques (BAT)

Workshop Facilitation

Safety Engineering
OTK offers engineering design solutions and assessment studies for both onshore and offshore facilities including floating vessels such as FPSO, FSRU, MODU, etc. OTK has team of engineers who are able to assist our clients throughout the project lifecycle by providing cost-effective services to minimise the possible impact of changes on design during the early stage of the project.
OTK is a specialist provider of the following safety studies to identify process or non-process hazards, analyse their effects and assess the risks associated with the facilities or operations during normal operations or simultaneous operations (SIMOPS):

  • Fire and Explosion Hazards Analysis (FERA/FEA/FRA/FEDHA)
  • Gas Dispersion and Smoke Ingress Analysis (GDSI)
  • Exhaust Vent Study
  • Escape, Evacuation and Rescue Analysis (EERA)
  • Emergency Systems Survivability Assessment (ESSA)
  • Temporary Refuge Integrity Analysis (TRIA)
  • Non-Hydrocarbon Hazards Analysis (NHHA)
  • Dropped Object (DOS) and Material Handling Study
  • Ship/Helicopter Collision and Structural Failure Study
  • Transportation Risk Assessment (TRA)
  • Blast and Overpressure Analysis
  • Topsides/Riser/Subsea/Ship Safety Analysis

Our HSE specialists also provide the following advisory services in Safety Engineering Design for various Greenfield and Brownfield projects:

  • Building/Plant/Platform Design/Layout Review and Optimisation
  • Hazardous Area Classification
  • Firewater Demand and Hydraulic Analysis
  • Depressurisation System Design
  • Flare and Vent System Design
  • Safety Equipment Specification
  • Machinery Safety Engineering
  • Fire Safety Engineering UK, Europe and Middle East

Safety Engineering

Fire Detection and Fire Protection Systems Design
At OTK, we have team of specialists who provides fire risk assessment and fire risk safety engineering design to ensure fires and smoke are detected on the onset of the events and appropriate controls and mitigations safeguards are provided to protect people and their environments from the destructive effects of fires and smoke. OTK also provides guidance to our clients in the selection of appropriate systems in accordance with the best industry practices and client specifications.
OTK 's specialist services include:

  • Fire, Heat and Smoke Detection System Design
  • Active Fire Protection (AFP) Design
  • Passive Fire Protection (PFP) Design
  • Fire and Gas Mapping
  • Fire Dynamics Analysis/Fire Effects Modelling

Fire Detection and Fire Protection Systems Design

HSE Risk Management

Qualitative and Quantitative Risk Assessment (QRA)
Qualitative Risk Assessments and Quantitative Risk Assessments are specialised methods for calculating risks to individuals, public (societal risk), the environment and/or assets. As part of the formal safety assessment required in the project HSE management, a QRA is highly demanded by our clients to identify major accident hazards and reduce the significant risk contributor according to the As Low As Reasonably Practicable (ALARP) principle.
OTK has extensive experience in providing QRAs for normal operations and SIMOPS with other value added analyses to assist our clients in decision making to achieve ALARP within their proposed project CAPEX/OPEX. The OTK team is able to effectively:

  • Identify process and non-process hazards associated with the facility or operation
  • Conduct frequency and consequence analyses
  • Conduct risk analysis and risk assessment
  • Recommend risk reduction and mitigation measures

OTK can provide the following comprehensive studies and solutions:

  • Quantitative Risk Assessment (QRA) for onshore and offshore facilities
  • Offshore/Onshore Pipeline QRA
  • Miscellaneous Risk Assessments.
  • Simultaneous Operations (SIMOPS) Risk Assessment
  • Cost-Benefit Analysis (CBA)
  • ALARP Assessment

OTK uses client proprietary software’s and approved OTK in-house consequence modelling and risk tools.

Qualitative and Quantitative Risk Assessment (QRA)

HSE Management System Development and Compliance
The Health, Safety and Environmental risk Management System (HSE MS) is an integral part of many company’s business management system to manage major HSE issues and risks. A HSE MS is mandatory in projects according to country specific legislation/regulation, company policy and requirements or industry standards. The HSE MS is aimed to strategically identify HSE risks, plan for arrangements to be in place to control the HSE risks, and engineer appropriate procedures, trainings, audits and improvements processes to achieve the HSE goals and objectives.
HSE MS development and compliance form a major part of OTK consultancy work. Our team provides advisory services to assist our clients in handling HSE issues associated with their facilities and operations from the earliest stage of the project. OTK also provides services to develop formal documentation for the HSE MS and outlines the appropriate actions to be taken in every project activity to ensure effective HSE management. Our services extend to assist our client to update and maintain the document as a live system through the whole project lifecycle.
Acting as COMAH (Control of Major Accident or Hazard) consultants, Sstructure also provides Formal Safety Assessments (FSAs) and prepares COMAH/CIMAH reports as well as offshore HSE/Safety Cases. These formal documents define the policy and objectives, the organisation and responsibilities/commitment of each role, the standards and procedures, the business processes and controls and the resources that are required to manage HSE issues in all aspects of the business.
Our specialist services are as follows:

  • Offshore HSE/Safety Case Development
  • Onshore COMAH/CIMAH Report Development
  • HSE/Safety Case Updates/Revisions and Bridging Documents
  • HSE MS Audits and Reviews
  • Hazard and Risk Register Preparation
  • Emergency Response Plan (ERP) Development
  • Procedures for General Safety, Operations and Maintenance (SOP) Development
  • Performance Standards (PS) Development for Safety Critical Elements (SCEs)
  • Safety Strategy and Philosophy Development
  • Onshore and Offshore Facilities Surveys and Audits

HSE Management System Development and Compliance

Occupational Health Risk Management
At OTK we now include workplace risk assessment within our portfolio of services. Risk assessment at work is a cross-disciplinary area concerned with protecting the safety, health and welfare of people engaged in work or employment. The goal of all workplace risk assessment programs is to facilitate a safe work environment. As a secondary effect, it may also protect co-workers, family members, employers, customers, suppliers, nearby communities, and other members of the public who are impacted by the workplace environment. Workplace risk assessment may involve interactions among many subject areas, including occupational medicine, occupational (or industrial) hygiene, public health, safety engineering, chemistry, health and physics. Modern occupational safety and health legislation usually demands that a risk assessment be carried out prior to making an intervention. It should be kept in mind that risk management requires risk to be managed to a level which is as low as is reasonably practical.
Our specialist services are as follows;

  • Working Environment Risk Assessment (WERA)
  • Human Error and Human Factor Study
  • Job/Task Hazard Analysis (JHA)
  • Human Behaviour during MAE
  • Ergonomics Study

Occupational Health Risk Management

Environmental Risk Assessments and Management
OTK uses a variety of tools to identify the Environmental, Social and Economic impacts of a proposed development prior to decision making.
Sstructure Environmental risk assessment will provide:

  • The most environmentally suitable option at an early stage
  • The Best Practicable Environmental Option
  • Alternative processes

OTK Environmental risk assessment provides clients with information for decision-making on the environmental consequences of proposed actions; and promotes environmentally sound and sustainable development through the identification of appropriate enhancement and mitigation measures. OTK 's environmental impact assessment service helps the stakeholders with the identification of the environmental, social and economic impacts of a proposed development before a decision is taking on whether or not to proceed. Particular attention is given in our environmental risk assessment practice to preventing, mitigating and offsetting the significant adverse effects of proposed undertakings.
Our specialist services are as follows;

  • Environmental Impact Assessment (EIA)
  • EIA Scoping
  • Best Available Technique (BAT) Assessment
  • Environmental Review/ENVID

Environmental Risk Assessments and Management


4.3.1 Reliability, Availability and Maintainability (RAM)
RAM Analysis concepts have been widely used by operators to develop optimised production solutions which minimise impact on revenue and expenditure. RAM techniques can be applied at engineering design and operational stage of an installation:

RAM simulations can be used to compare alterative design options by quantifying the likely production throughput for each option. The analysis can be used to identify key systems which represent potential “bottlenecks” in production flow. Historically, it has been shown that the findings of a RAM study conducted at an early stage will ultimately minimise the impact on project cost and schedule following a design change.
Front End Engineering Design            Reviews performed at FEED are often aimed at evaluating critical equipment which may lead to production losses. These reviews are also intended to provide a benchmark of predicted plant uptimes against targets. This is particularly useful for large gas projects for which contractual agreements are based on gas deliverability. RAM reviews are able to provide solutions to identify an optimised plant configuration with the aim of avoiding costly penalties which may otherwise occur due to production downtime. RAM studies can provide an invaluable insight into predicting production performance and it can ultimately provide input into

  • Equipment Selection
  • System Configuration
  • Maintenance and sparing philosophies
  • Power Load requirements
  • Pipeline Sizing
  • Third Party contractual agreements

Detailed Engineering                RAM assessments at this stage allow clients to establish minimum performance parameters for equipment items and packages that must be sourced by specialist vendors. The outcomes of the assessment can be directly used in defining the design specification required as part of the procurement process.
Operations                                Adopting the principles of RAM and applying to a “live” facility can reap benefits for identifying unreliable equipment, plant bottlenecks and operational constraints. OTK have supported operators in developing maintenance and sparing philosophies, diagnosing the root cause of failing equipment and de-bottlenecking systems with the objective of maximising plant performance.
OTK is a leading provider of RAM services in Oil & Gas industry with experience in executing studies for Onshore, Offshore, Subsea and Floating facilities. Our specialist RAM consultants are able to provide:

  • Availability Studies
  • Markov State Modelling
  • Logistics and Transportation using "real time" simulation modelling
  • Debottlenecking and Performance Improvement studies
  • Spare Parts Optimisation
  • System Performance Evaluations
  • Whole Life Cycle Costing
  • CAPEX and OPEX Economic calculations

Reliability, Availability and Maintainability (RAM)

4.3.2 Risk Based Inspection
RBI is a systematic approach that enables users to make informed business decisions regarding inspection and maintenance expenditure. The fundamental objective of implementing a successful RBI programme is to create an inspection strategy that clearly defines.

  • The equipment items which require inspection;
  • The optimal periodicity of inspections; and
  • The correct techniques that should be performed to identify defects that a particular component is likely to develop.

The fundamental reasons for implementing RBI are to:

  • Measure and understand the risks associated with current inspection programs
  • Provide a basis for shifting resources from lower to higher risk equipment
  • Enhance the cost effectiveness of inspection and maintenance resources
  • Monitor risk reduction as a result of implementing inspection practices
  • Use historical data to facilitate the maintenance planning process for future installations
  • Allow management to review safety in an integrated, cost effective manner
  • Increase reliability of equipment and operation thereby extending asset life
  • Minimise loss of production through selecting cost effective inspection programs without compromising safety and risk to environment

OTK has the in-house capabilities to implement RBI programs for clients in Oil & Gas industry. Using industry software and our experience in Asset Integrity Management, we are able to work closely with our clients to provide tailored solutions to maximise values. Sstructure has applied RBI principles, such as RBI studies and Corrosion Risk Assessments, to Offshore and Onshore installations.

Risk Based Inspection

4.3.3 Reliability Centred Maintenance
RCM assessments identify cost effective maintenance strategies based on a detailed understanding of an asset's functional requirements, performance standards and conditions of use. If applied correctly, the resultant maintenance strategy will ensure that the required levels of safety and in-service availability are achieved at minimal cost.
OTK, RCM consulting specialists, have the skill base and project experience in the application of RCM methodology. This is centred on:

  • Derivation of functional definitions and performance standards
  • Analysis of source data to identify trends and failure characteristics
  • Failure Modes Effects and Criticality Analysis (FMECA) whereby functional failures are defined and failure modes identified together with the consequential effects relative to safety, environmental and system performance
  • Based on FMECA results and the failure characteristics of individual equipment and components, derivation of cost effective maintenance strategies can be achieved using:
    • On condition maintenance
    • On failure maintenance
    • Scheduled overhaul / replacement
    • Fault finding
    • Re-design where appropriate and cost effective
  • Preparation of maintenance documentation including scheduling

Derivations of maintenance strategies by OTK consultants, using RCM techniques offer the following benefits:

  • Maintenance strategies tailored to suit specific commercial and operational requirements
  • Optimisation of maintenance costs
  • Efficient use of maintenance resources
  • A clear audit trail and demonstration of compliance with safety case or other regulatory / legislative requirements regarding the in-service availability of critical equipment

Our RCM consultants are able to provide:

  • Reliability Centred Maintenance (RCM) studies
  • Maintenance Optimisation
  • Root Cause Analysis
  • Failure Modes Effects and Criticality Analysis (FMECA)

Reliability Centred Maintenance

4.3.5 Functional Safety Engineering
The fundamentals of Functional Safety have been further highlighted in the industry through highly publicised asset integrity disasters. The importance of following Functional Safety Lifecycle in accordance with IEC 61508 / 61511 standards is key as concepts have become embedded in regulatory requirements.
Safety Instrumented Systems (SIS) is critical in maintaining a safe environment within the Oil & Gas Industry. They represent methods of reducing the likelihood of hazardous scenarios occurring by either preventing or mitigating escalation. Functional Safety studies are performed with the objective of providing assurance that safety related systems offer the appropriate level of risk reduction to achieve the required protection for equipment.
OTK provides functional safety assurance by reviewing engineering design with an aim to:

  • Reduce the likelihood of systematic failures
  • Improve compliance with regulatory bodies
  • Enhance the overall process safety management
  • Support demonstration of continuous improvement in safety culture

We use our in-house developed software tools primarily for Safety Integrity Level (SIL) and Layers of Protection (LOPA) studies.

OTK consultants have undertaken intensive training and are certified Functional Safety Engineers. We are able to assist our clients in the following:

  • Safety Integrity Level (SIL) Workshops
  • Verification and Validation
  • Functional Safety Assessments
  • Layers of Protection Analysis (LOPA)
  • SIS Design
  • Safety Requirement Specification Development
  • Functional Safety Audits

Functional Safety Engineering

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