Ammonia Know How contributors


Dan Cojocaru – Ammonia process safety expert

He has over 13 years of engineering and consultancy experience in fertilizer and gas projects from the following countries: Australia, Germany, Vietnam, UAE, Saudi Arabia, Romania and Russia, and was involved in design for projects developed in countries like Egypt, Algeria, Slovak Republic and China.

He has experience in all project phases starting from Concept and Front End Engineering (FEED) through Commissioning and Operation. He is a Chartered Chemical Engineer, a Member of The Institution of Chemical Engineers (CEng, MIChemE), a Member of Engineers Australia, a Member of the Safety and Loss Prevention Group of the IChemE, and a Registered Professional Engineer of Queensland (RPEQ).

Dan has extensive experience in engineering and process safety consultancy services to EPCM companies and their clients including the preparation of Safety Reports, hazard identification and analysis, consequence and risk modelling of major accidents using DNV GL PHAST, quantitative risk assessment using DNV GL SAFETI, development of Major Accident Hazard (MAH) bow-tie diagrams, and Hazard and Operability (HAZOP) facilitation.

Dan also provides advice and process safety input to various safety studies such as Hazard Identification (HAZID), HAZOP, Layers of Protection Analysis (LOPA), 3D model review, design review and Simultaneous Operations (SIMOPS) during the project lifecycle.

Mark graduated at the Technical University of Eindhoven (Chemical Engineering). After military service he joined DSM where he worked first seven years as a process engineer. In 1996 he joined Stamicarbon as Licensing Manager Urea Revamps. Later he became the Manager of Stamicarbon Services responsible for all Stamicarbon’s activities in existing urea plants. In these nearly fourteen years he visited more than 100 urea plants worldwide and was involved in numerous revamp, relocation, debottlenecking and grass root projects.

Since early 2009 Mark Brouwer started up is an independent group of nitrogen fertilizer specialists with an impressive number of years experience in designing, maintaining and operating urea plants.’s mission is to support, facilitate and promote the exchange of information within the nitrogen fertilizer industry with the target to improve the Safety and Performance of all nitrogen fertilizer plants worldwide. has become the largest network in the urea industry and offers various technical and commercial consultancy services.

Angus Keddie

Angus Keddie has spent 30 years with industry leaders such as BP, KBR and Foster wheeler. He has held high level Process Safety, technical, operations, proposals and training positions. Angus graduated with an Honours Degree in Chemical Engineering from Edinburgh University in 1986. He was subsequently awarded an MBA from Aston University in 1997. Furthermore, he was elected a Fellow of the Institute of Chemical Engineers in 2014.

Angus combines a strong technical background, proven management and facilitation credentials and robust communication skills. He has leveraged the use of these assets to achieve success in the industry posts he has held to date in his career. He has recent experience as HAZOP, SIL, LOPA, HAZID and SIMOPs Leader for several leading Oil Industry company. In addition, he has held senior proposals posts in two major Oil Industry contractors (FW/KBR) for 5+ years, giving him a broad overview of design and operations requirements.

Agustin Valera-Medina

Agustin Valera-Medina is a Reader/Associate Professor at Cardiff School of Engineering. He has participated as Principal Investigator (PI) or Co-Investigator (Co-I) on 26 industrial projects with multinationals including PEMEX, Rolls-Royce, Siemens, Ricardo, Airbus, and EON, attracting approximately £8.6M in research and development.

He has published 151 papers (h-index 21), 28 of these specifically concerning ammonia power. He has been part of various scientific boards, chairing sessions in international conferences, and moderating large industrial panels on the topic of “Ammonia for Direct Use.” He supported the preparation of the Royal Society Policy Briefings “Green Ammonia” on the use of ammonia as an energy vector, and he is the main author of the book “Techno-economic challenges of green ammonia as energy vector” (Elsevier).

Venkat Pattabathula

Venkat Pattabathula has more than 35 years of experience in nitrogen manufacturing industry in various parts of the world such as Asia, North America, and Australia. Extensive experience in process design and engineering of world scale ammonia/urea projects valued at more than US$ 600 million engineered by different process licensors and EPC companies. A Technology Manager experienced in being responsible for economic evaluation and technology selection in plant upgrades and performance guarantees on all ammonia plant related projects. A track record of identifying and documenting Best Practices in ammonia production processes to achieve world class safety and reliability standards. Venkat is a chartered professional engineer (CPE) of Engineers Australia and a registered professional engineer of Queensland (RPEQ) and a life member of American Institute of Chemical Engineers (AIChE). Venkat was elected to the AIChE Ammonia Safety Committee in 2005 and has been on the committee since then. He is also on the Editorial Advisory Board of Chemical Engineering Progress (CEP) magazine of AIChE.

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