Professional Regulatory Body INGAA – Interstate Natural Gas Association of America Professional Regulatory Body GERG – European Gas Research Group Professional Regulatory Body INGAA – Interstate Natural Gas Association of America Professional Regulatory Body International Gas Union (IGU) Professional Regulatory Body Pipeline Research Council International (PRCI) Professional Regulatory Body American Petroleum Institute (API) Professional Regulatory Body American Society of Civil Engineers (ASCE) Professional Regulatory Body American Society of Mechanical Engineers (ASME) Professional Regulatory Body International Petroleum Technology Institute (an ASME Institute) Professional Regulatory Body British Standards Institution (BSI) Professional Regulatory Body European Pipeline Research Group e.V. (EPRG) Professional Regulatory Body Fédération Internationale des Ingénieurs-Conseils (FIDIC) Professional Regulatory Body IFP Energies Nouvelles (IFPEN) Professional Regulatory Body Institution of Civil Engineers Professional Regulatory Body Institution of Mechanical Engineers Professional Regulatory Body Lloyd’s Register Professional Regulatory Body Institute of Marine Engineering, Science & Technology (IMarEST) Professional Regulatory Body The Energy Institute Professional Regulatory Body