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Horizon Consultants

Horizon Consultants has over 20 years experience supporting the full lifecycle services of Safety Instrumented Systems (SIS) from HAZOP/risk assessment to start-up and commissioning as well as maintenance testing and life cycle management of the SIS platforms.


Established in 1996, Horizon Consultants is strategically located in Gonzales, Louisiana. We’ve had several Long Term Client Relationships in excess 15 years and successful competition in excess of 300 turnkey SIS Projects. Mangan Inc. has positioned itself as an industry leader in SIS engineered solutions in North America. The purchase of Horizon provides us with a local presence to serve Louisiana clients.


“This acquisition made sense on so many fronts,” says Amin Solehjou, CEO of Mangan. “Horizon Consultants shares our ’customer-first‘ doctrine in business, provides complementary engineering solutions and aligns with Mangan, corporately and culturally. Combining our technical skills across the U.S. while equipping the outstanding engineering consultants at Horizon to apply our Safety Lifecycle Management (SLM) software platform positions Mangan as the premier SIS Engineering service provider. We look forward to continued growth in safety systems engineering/consulting by delivering top-tier service, and talent to our clients.”


Harold Howard, President of Horizon Consultants, comments “We have found a strong business partner in Mangan, Inc., that shares not only our level of expertise and business philosophies but also provides a solid foundation for us to extend services to our long-term clients. A combination of the Mangan SLM software platform, their established footprint across the U.S., and strategic relationships will create an SIS Engineering/Consulting group capable of world-class customer support for years to come. “