1910.119(d)(2)(i): Required Process Technology Information
Process safety information about the technology of the process must include at least a block flow diagram or simplified process flow diagram, process chemistry, maximum intended inventory, safe upper and lower limits for items such as temperatures, pressures, flows or compositions, and an evaluation of the consequences of deviations, including effects on employee safety and health.
Key takeaways
- 1910.119(d)(2)(i) is part of OSHA's general industry standards (29 CFR Part 1910, Subpart H).
- OSHA cited it 36 times in the last 3 years, in 22 inspections, with $567,833 in current penalties.
- Most citations: PA (7), WI (4), TN (4).
- Related part: 1910.119(d) Process safety information (190 citations).
- Free 5-minute toolbox talk for your crew below.
In this article
What this rule covers
29 CFR 1910.119(d)(2)(i) is one requirement inside 1910.119 Process safety management of highly hazardous chemicals, an OSHA general industry standard (Part 1910, Subpart H). It includes 5 sub-paragraphs. The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.
Official text
(i) Information concerning the technology of the process shall include at least the following: 36 citations
(A) A block flow diagram or simplified process flow diagram (see appendix B to this section); 6 citations
(B) Process chemistry; 2 citations
(C) Maximum intended inventory; 7 citations
(D) Safe upper and lower limits for such items as temperatures, pressures, flows or compositions; and, 9 citations
(E) An evaluation of the consequences of deviations, including those affecting the safety and health of employees. 9 citations
Source: eCFR, text current as of 2026-10-15. Read all of 1910.119.
Where and how often it was cited
| Year | Citations |
|---|---|
| 2023 | 4 |
| 2024 | 8 |
| 2025 | 13 |
| 2026 | 11 |
Top states: PA (7), WI (4), TN (4), IL (4), OH (4)
Largest penalties
| Employer | Location | Penalty for this rule |
|---|---|---|
| POLYCARBON INDUSTRIES, INC./SEQENS SAS | NEWBURYPORT, MA | $171,876 |
| ACCURATE ENERGETIC SYSTEMS, LLC | MC EWEN, TN | $147,000 |
| HANOVER FOODS CORPORATION | CENTRE HALL, PA | $90,000 |
| UNITED STATES STEEL CORPORATION | CLAIRTON, PA | $16,550 |
| VALERO REFINING COMPANY- OKLAHOMA | ARDMORE, OK | $16,550 |
Free toolbox talk
A 5-minute crew talk on 1910.119(d)(2)(i), plus alerts when this rule changes. Free.
OSHA interpretation letters
None exist. OSHA has not published a letter of interpretation for 1910.119(d)(2)(i).
Related parts of this rule
- 1910.119(d) Process safety information 190 citations
- 1910.119(d)(3) Information pertaining to the equipment in the process 135 citations
- 1910.119(d)(3)(i) 83 citations
- 1910.119(d)(3)(ii) 48 citations
- 1910.119(d)(2) Information pertaining to the technology of the process 38 citations
- 1910.119(d)(3)(i)(B) 30 citations
- 1910.119(d)(3)(i)(D) 14 citations
- 1910.119(d)(3)(iii) 2 citations
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Frequently asked questions
What diagram is required?
A block flow diagram or simplified process flow diagram (see appendix B to 1910.119).
Must consequences of deviations be evaluated?
Yes, including those affecting the safety and health of employees.
Is inventory part of the information?
Yes. The maximum intended inventory.
About this page
Sources
- 29 CFR 1910.119 (eCFR), text current as of 2026-10-15
- U.S. Department of Labor enforcement data: OSHA inspections, citations and accident records, copied nightly; data as of 2026-10-21
3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.