What Process Improvement Institute does

Process Improvement Institute, Inc. (PII) is a Tennessee-based B2B professional services firm founded in 2003 that specializes in process safety management (PSM) training and consulting for regulated process industries. The company serves chemical, petrochemical, oil and gas, nuclear, pharmaceutical, semiconductor, and mining operators, delivering an 18-course standardized public training catalog (per-student pricing $1,100-$2,995) alongside customized private/on-site courses and hands-on consulting engagements covering process hazard analysis (PHA/HAZOP), Layer of Protection Analysis (LOPA), Safety Instrumented Systems (SIS/SIL) verification, incident investigation and root cause analysis, mechanical integrity, management of change, and full PSM program implementation.

PII's core intellectual property is its methodology authorship: founder William Bridges and principal Art Dowell are recognized originators of LOPA and co-authors of the definitive CCPS/AIChE textbooks on LOPA, PHA hazard evaluation procedures, and incident investigation. PII staff have led more than 600 PHAs/HAZOPs, performed more than 240 major incident investigations, and conducted more than 70 PSM audits, with cumulative training of over 10,000 professionals worldwide and an approximately 80% repeat business rate.

In March 2026, Trinity Consultants (a Dallas-based global environmental consulting firm) acquired PII, integrating its PSM training, human factors consulting, and SIS verification capabilities with Trinity's environmental compliance platform. Post-acquisition, PII operates as a subsidiary maintaining its brand, with combined geographic reach spanning North America, South America, Europe, the Middle East, and parts of Asia Pacific. The firm runs a small headcount (11-50) of senior expert instructors and has begun productizing extensions such as the SIL Solver Lite mobile application for Safety Integrity Level calculations.

Name

Process Improvement Institute

Legal name

Process Improvement Institute, Inc.

Website

https://process-improvement-institute.com

Company type

Private

Founded year

2003

Operating status

Acquired

Headcount range

11–50 employees

Short description

Process Improvement Institute is a Knoxville, TN-based PSM training and consulting firm serving regulated process industries (chemical, petrochemical, oil and gas, pharma, nuclear) with 18 standardized courses, private on-site training, and expert-led consulting. Founded 2003, it was acquired by Trinity Consultants in March 2026.

Ownership category

akta.pro rank

Product category

Process Safety Management Consulting and Training

NAICS

Other Scientific and Technical Consulting Services (541690), Testing Laboratories and Services (541380)

SIC

Services-Engineering, Accounting, Research, Management (8700), Services-Engineering Services (8711)

akta.pro primary industry

Process Safety & Major Hazard Risk Management (PSM) (BPAHAJAE)

akta.pro secondary industries

Process Safety Management (PSM) & High-Hazard Operations (EDABAEAD), Reliability, Safety & Risk Engineering (RAMS/PSM) Consulting (BPAHAIAK)

Keywords

• Process safety management
• PSM consulting
• HAZOP training
• Risk management services
• Industrial safety training

Headquarters

HQ city

Knoxville

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Public Training Courses: PII offers standardized public training courses delivered in US cities (Houston, Charlotte, Napa) and international locations (Dubai, Bahrain). Course fees vary by duration, location, and format (online vs. in-person), ranging from $1,100 to $2,995 per participant. A 15% discount is available for groups of 4 or more from the same company.
2. Private/On-site Training: Customized training delivered at client sites or a central regional location, priced per day per class with recommended maximum class sizes. This is the most popular option, with PII providing more than 50 private courses to over 20 organizations in the past year. Multiple course discounts are available.
3. Consulting and Contract Services: Hands-on consulting services including leading PHAs/HAZOPs, coaching PHA leaders, performing LOPA and SIL assessments, incident investigation support, PSM program development and implementation, procedure writing, and mechanical integrity programs. Services augment or replace internal staff as needed.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Process Improvement Institute (PII) delivers specialized training and consulting services for process safety management (PSM), risk management, and process reliability in regulated industrial sectors. Its portfolio includes 18 standardized public training courses, customized private on-site training, and hands-on consulting covering hazard analysis (PHA/HAZOP), Layer of Protection Analysis (LOPA), Safety Instrumented Systems (SIS/SIL), incident investigation, mechanical integrity, and full PSM program implementation.

Product overview

Process Improvement Institute (PII) offers a comprehensive portfolio of process safety management training courses and consulting services. The company provides 18 standardized public training courses covering topics including PSM overview, process hazard analysis (HAZOP), Layer of Protection Analysis (LOPA), incident investigation, root cause analysis, mechanical integrity, management of change, safety instrumented systems, human error prevention, and reliability leadership. Additionally, PII offers private/customized training delivered at client sites or regional locations. On the consulting side, PII provides hazard review services, LOPA services, SIS implementation support, procedure writing coaching, incident investigation services, equipment reliability programs, and full PSM program development and implementation. The company also provides free resources including technical papers and best practice documents on process safety topics. In March 2026, PII was acquired by Trinity Consultants to expand process safety services globally.

Differentiator

Problem solved

Functional benefit

Products and services

• Process Safety Management (PSM) Training Course In-depth training on each of the 14 elements of OSHA's PSM regulation, with guidelines for integrating PSM element requirements into other company programs and evaluating program compliance. Available as a 3-day public course ($1,350 in USA/Online, $1,995 in Dubai/Bahrain) and via private on-site delivery.
• Compliance Auditing for Process Safety Course Training covering every aspect of PSM auditing including data gathering via records and interviews, note taking, report writing, and recommendations, with a workshop auditing actual PSM practices in a real-time setting. 2-day course at $1,100 in USA/Online and $1,695 in Dubai/Bahrain.
• Incident Investigation / Root Cause Analysis Leadership Course Teaches how to lead investigations and root cause analyses using Causal Factor Charting, Fault Tree Analysis, and Root Cause Charts. Optional software instruction included. 3-day course at $1,350 in USA/Online and $1,995 in Dubai/Bahrain.
• PHA/HAZOP Leadership Training Course Comprehensive 5-day course covering risk review techniques for initial PHAs of entire units or large projects, including HAZOP, what-if/checklist, and FMEA methods. Priced at $2,500 in USA/Online and $2,995 in Dubai/Bahrain.
• Layer of Protection Analysis (LOPA) Training Course Teaches LOPA methodology for determining if proposed or existing combinations of safeguards are sufficient to prevent accidents or mitigate consequences without requiring full quantitative risk assessment. 2-day course at $1,200 in USA/Online and $1,795 in Dubai/Bahrain.
• Safety Instrumented Systems (SIS/SIF/SIL) Training Course Covers determining SIL levels or designing SIS, including what SIS are, where they fit in to control risk, and how these are specified, designed, installed, and maintained. 2-day course at $1,200 in USA/Online and $1,795 in Dubai/Bahrain.
• Mechanical Integrity Training Course Prepares participants to evaluate existing practices versus recognized codes and standards and efficiently improve or develop and implement a mechanical integrity (MI) program. 2-day course.
• Writing Effective Operating and Maintenance Procedures Course Teaches how to write effective step-by-step operating procedures and how to develop troubleshooting guides from PHA documentation. 2-day course at $1,100 in USA/Online and $1,695 in Dubai/Bahrain.
• Management of Change (MOC) & Pre-Startup Safety Review (PSSR) Course Explores proven strategies for implementing a workable MOC system and shows how to implement physical/instrumentation changes through proper use of pre-startup safety review systems. 2-day course.
• Updating and Revalidating Process Hazard Analyses Course Prepares participants to execute PHA revalidation that complies with PSM regulations and industry standards, including when a complete redo may be required.
• Human Error Prevention for Managers Course Provides insights into current knowledge of human error and how it can be reduced with hands-on experience of practical error reduction techniques using real-life case studies.
• Job Safety Analysis (JSA) Training Course Teaches basics of performing a Job Safety Analysis, a proven process for controlling operating hazards and costs with step-by-step overview.
• Reliability Leadership for Manufacturing Excellence Course Reviews models for achieving reliability and manufacturing excellence, covering application of reliability strategy supporting lean manufacturing and supply chain principles.
• Private On-site Training Services Customized private courses offered at client sites or regional locations, with advantages including cost savings for groups, larger class sizes, custom training plans, and follow-on hands-on coaching. PII provided more than 50 private courses to over 20 organizations in the past year. Priced per day per class rather than per student.
• Hazard Review Consulting Services Consulting services covering process hazard analysis (PHA), hazard and operability (HAZOP) analysis, What-if analysis, failure mode and effects analysis (FMEA), SIL determination for SIS, and project risk reviews. Delivered by PII experts embedded with client teams.
• Layer of Protection Analysis (LOPA) Consulting Services Co-authored by PII staff who wrote the definitive AIChE guideline book on LOPA. Services include performing LOPA for resolving PHA recommendations and determining SIL for safety instrumented systems.
• Safety Instrumented Systems (SIS) Implementation Consulting Services Full SIS implementation support including SIF/SIL determination, SIF specification, SIF design, SIL verification, SIS installation, and SIS functional checks.
• Incident Investigation and Root Cause Analysis Consulting Services Assists in or leads incident investigations or root cause analyses, helping teams find all causes and root causes of near hits or accidents. PII has conducted over 240 major investigations and over 100 root cause analyses.
• PSM Program Development and Implementation Consulting Services Expert assistance developing and implementing all parts of PSM including MOC, Incident Investigation, PSSR, operating procedures, mechanical integrity, and key performance indicators.
• Equipment Reliability and Mechanical Integrity Programs Consulting Assists in developing inspection, test, and preventive maintenance plans and equipment reliability programs using risk-based approaches.
• Procedure Writing Coaching Services Hands-on coaching to help organize procedure writing tasks and ensure writers get off to a good start following classroom training on writing effective procedures.

Quantifiable outcome

• Over 10,000 professionals trained in PSM-related topics; over 4500 investigators, 5000+ PHA leaders, 3500 PSM experts and auditors, 1000 procedure writers trained
• +3 more outcomes

Named customers16 records

Segments7 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Trinity ConsultantscoreStrategic or Co-development Partner · 1 March 2026Trinity Consultants, a Dallas-based global environmental consulting firm, acquired Process Improvement Institute Inc. in March 2026. The acquisition integrates PII's PSM training, engineering, human factors consulting, and Safety Instrumented Systems verification capabilities with Trinity's existing environmental consulting business, expanding the combined entity's service offerings across regulated industries including chemical, petrochemical, oil and gas, and pharmaceutical sectors, with geographic reach across North America, South America, Europe, and the Middle East.

Scale indicators6 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Jensen Hughes: Jensen Hughes is a large global engineering and consulting firm covering fire protection, risk, and process safety. While broader in scope than PII, it competes on PHA, LOPA, and PSM engagements for enterprise clients.
• Exponent: Exponent is a multi-disciplinary engineering and scientific consulting firm that handles root cause failure analysis, incident investigation, and human factors work. It overlaps with PII's incident investigation and RCA service lines.
• ERM (Environmental Resources Management): ERM is a global environmental, health, and safety consultancy that includes process safety services among its broader sustainability and compliance offerings. It competes with PII for enterprise EHS and process safety mandates.

Direct peers

• ioMosaic Corporation: ioMosaic is a specialized process safety, risk management, and process reliability consulting firm offering PHA, LOPA, QRA, and PSM implementation services. It competes head-to-head with PII in petrochemical and chemical industry consulting and training.
• Stonehouse Process Safety: Stonehouse is a process safety consultancy providing PHA/HAZOP, LOPA, SIL, incident investigation, and PSM/RMP audit services. It targets a similar enterprise client base in chemical and oil & gas with comparable methodologies.
• DEKRA Process Safety: DEKRA Process Safety delivers process safety consulting, PHA/HAZOP leadership, LOPA, and PSM training globally. It serves the same regulated industries (chemical, petrochemical, oil & gas, pharmaceutical) and is one of the largest dedicated process safety consultancies worldwide.
• ABS Group: ABS Group is a global provider of process safety management, risk and reliability, and integrity management consulting and training. It overlaps directly with PII across PHA, HAZOP, LOPA, SIL/SIS, and PSM auditing for chemical, oil & gas, and petrochemical clients.
• Chilworth (now part of DEKRA): Chilworth was a specialized process safety and laboratory testing consultancy covering PHA, LOPA, electrostatic hazards, and PSM. Now part of DEKRA, it remains a direct competitor in the same niche.
• GexCon: GexCon specializes in process safety, explosion modeling, and consequence analysis consulting and software (FLACS). It overlaps with PII in advanced risk assessment and incident investigation work for oil & gas and chemical clients.

Others

• Trinity Consultants: Trinity Consultants is PII's parent company and a global environmental, EHS, and life sciences consulting firm. Although now an acquirer, Trinity's standalone EHS and air permitting services represent an adjacent capability set now combined with PII's PSM expertise.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

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• LinkedInlinkedin.com/company/928748?trk=tyah

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Process Improvement Institute