Informasi Seminar
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Layer of Protection Analysis (LOPA)

Layer of Protection Analysis (LOPA)
Bandung | 13 – 15 Februari 2013 | IDR 7.949.000,-
Bandung | 6 – 8 Mei 2013 | IDR 7.949.000,-
Bandung | 11 – 13 November 2013 | IDR 7.949.000,-



Recommended prerequisites: Attendees of this training layer of protection analysis should have strong technical skills and prior training in qualitative hazard evaluation techniques

Are proposed or existing combinations of safeguards enough to prevent an accident or mitigate the consequences? Do you perceive that doing a fully quantitative risk assessment (QRA) would be over-working the problem? Then Layer of Protection Analysis (LOPA) is the new tool you need to learn. LOPA combines both qualitative and quantitative elements of hazard evaluation and risk assessment to analyze and judge the adequacy of existing or proposed safeguards against process deviations and accident scenarios. A key to the success of LOPA is its rules for judging if protection layers are truly independent. Because of these rules, LOPA helps the analysts make consistent judgments of if the risk of scenarios are “as low as reasonably practical (ALARP)”.

What You Will Learn
When and how to use LOPA and How to systematically create risk scenarios
How to establish risk acceptance (risk tolerance) criteria for use within your company (this is also called development of ALARP criteria)
How to calculate “as-is” risk for a cause-consequence pair:
Estimate the frequency of the initiating event and estimate consequence
What is meant by “independence” and “uniqueness” with respect to IPLs
How to use LOPA to determine the Safety Integrity Level (SIL) necessary for an instrument IPL (to comply with the requirements of IEC 61508/61511)
How other companies worldwide use LOPA to:
Decide which PHA/HAZOP recommendations to reject and which to accept
Focus limited resources within mechanical integrity departments and operations on what is critical to manage risk to ALARP
Avoid wasting resources on quantifying risk using QRA methods
Perform specialized risk modeling for facility siting questions

Who Should Attend?

This Training Layer of Protection Analysys course is designed for experienced PHA/HAZOP leaders. Other individuals with a strong technical background (such as engineers and scientists) may attend: Managers of Operations, Safety; Project Managers; Engineers – Process, Safety, and Mechanical; PSM Coordinators and Managers


Introduction to LOPA

Learning objectives and goals of using the LOPA technique
What is LOPA? How is LOPA applied? Definitions? When is LOPA used?
Developing LOPA Scenarios

Selecting candidate scenarios from brainstorming hazard evaluations
Scenarios from design questions and from incidents
Estimating the Consequence of the Scenario

Using a look-up table of consequence; Developing a consequence look-up table for your company; Alternative methods for estimating consequences
Workshop 1: Estimating the consequence of a scenario (part of a continuing example)
Estimating the Likelihood of the Selected Initiating Event

Using a look-up table of initiating event categories and frequencies
How to develop an initiating event look-up table for your company
Addressing enabling conditions and time-dependent initiating events
Workshop 1: Estimating the frequency of an initiating event of a scenario (part of a continuing example)
Estimating the Probability of Failure of Independent Protection Layers

Definitions, rules, and exceptions for giving credit for an independent protection layer (IPL);
Using a look-up table of IPL categories and probability of failure on demand (PFOD); How to develop an IPL look-up table
Workshop 1: Deciding which safeguards are valid IPLs and estimating the PFOD of the valid IPLs (part of a continuing example)
Calculating the Risk

Using a standardized LOPA worksheet; Rules for calculating risk for an individual scenario (LOPA); Rules for summing risk of related scenarios
Workshop 1: Calculating the risk of a LOPA scenario (part of a continuing example)
Judging the Risk

Examples of risk tolerance criteria from the industry
Development and implementation of a company risk tolerance criteria
Workshop 1: Judging the risk of a LOPA scenario (cont. example) Case Studies
Workshop 2: Performing LOPA from beginning to end for a scenario
Workshop 3: Performing several LOPA, beginning with a set to HAZOP tables and deciding which scenarios need LOPA
Special Applications of LOPA

Using LOPA for facility siting questions; Selecting the SIL for an interlock
Workshop 4: Estimating the composite risk for facility siting


Dr. Bambang Murtjahjanto, M.Sc, P.E.

He has experienced in HSE, Quality and Engineering including for training Process Safety Management for almost 30 years. His career began as HSE Engineer at Roy Huffington, Inc (Hufco – Badak) in 1982 – 1987, Gas plant manajer at PT. Asahimas Flat Gas, Operation Manager at Dupont Chemicals, Inc USA and South East Asia Manufacturing Manager GE Power and Locomotive USA. As a professional trainer and consultant, he already served many companies, including PT. INKA, PT. Jawa Power, PT. Agaton Mandiri, PT. PAL Indonesia, McDermott Batam, Chevron Pasific Indonesia, Kondur Oil Co, PT. Pertamina Drilling Service, Total Elf Senipah, JOB Pertamina – Talisman, etc. He was graduated from Instrumentation Engineering ITS – Surabaya, hold Master Graduate in Reliability Engineering and PhD in Engineering System, University of Century – Albuquerque NM USA


  1. Bandung, 7 – 9 November 2012
  2. Bandung, 13 – 15 Februari 2013
  3. Bandung, 6 – 8 Mei 2013
  4. Bandung, 11 – 13 November 2013


  • Pendaftaran per peserta IDR 7.949.000,-
  • Pendaftaran & Pelunasan 2 minggu sebelum training IDR 7.699.000,-
  • Gratis orang ke 5, untuk pendaftaran 4 orang dari satu perusahaan

Fasilitas  :

Modul Training yang berkualitas (hardcopy dan softcopy), Training Kit: tas, Block Note, ballpoint, termasuk jaket atau t shirt, Lokasi training yg nyaman di hotel berbintang empat / lima, Makan Siang, coffee / tea break, Sertifikat,Flash disk berisi materi training, Foto bersama seluruh peseta training layer of protection analysis

Posted in: Bandung, HSE

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