neqsim-controllability-operability SKILL.md skillA
neqsim-controllability-operability from equinor/neqsim is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add equinor/neqsim/neqsim-controllability-operability@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- equinor/neqsim
- Path
.github/skills/neqsim-controllability-operability/SKILL.md- Versions recorded
- 4
- Latest version
- v1.0.0, committed Sep 17, 2026
- First version recorded
- Apr 26, 2026
- Size
- 11,529 bytes
- Repository stars
- 167
- License
- Apache-2.0
Process controllability and operability — operating envelope mapping, turndown analysis, startup/shutdown sequencing, control valve sizing per ISA-75 (Fl, Fp, choked flow), rangeability, hunting/loop tuning, recycle stability. USE WHEN: a task involves operability assessment, turndown studies, control valve sizing, startup/shutdown procedures, or 'will this design operate?' questions. Complements neqsim-dynamic-simulation (transient solver) with steady-state operability framing.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# NeqSim Controllability & Operability Skill The "can this plant be operated?" half of process design — operating envelopes, turndown, startup/shutdown sequencing, control valve sizing, and steady-state operability checks. Pairs with [`neqsim-dynamic-simulation`](../neqsim-dynamic-simulation/SKILL.md) which solves the transient response. ## When to Use - Mapping operating envelope (P, T, flow, composition window where the plant runs) - Turndown analysis (10–100% capacity) - Control valve sizing per ISA-75 / IEC 60534 - Startup / shutdown sequence definition - Recycle stability / loop interaction screening - Identifying hidden constraints (compressor surge, tray weeping, HX pinch) - Evaluating P&ID-derived valve changes such as closing an isolation valve, partly closing a control valve, opening a bypass, or changing controller mode For P&ID-driven operational changes, load `neqsim-pid-process-operations` first to classify symbols, define the topology, bind plant tags, and turn each action into a NeqSim model delta. For MCP or Java workflows that already have a `ProcessSystem`, use `neqsim.process.operations.envelope.OperationalEnvelopeEvaluator` or MCP …
Read the whole file at its exact version.
How to install
mdr add equinor/neqsim/neqsim-controllability-operability@sha256:72210f054ef2a0f5The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_d4d3dhuu5pc5g6ba)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Apr 26, 2026 and Sep 17, 2026, about one every 48 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-09-17 | 84ac573 | 11,529 B | A | view · diff |
| v1.0.0 | 2026-06-30 | be1d063 | 11,317 B | A | view · diff |
| v1.0.0 | 2026-05-10 | f20567c | 10,198 B | A | view · diff |
| v1.0.0 | 2026-04-26 | f35556c | 9,408 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11529 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
equinor/neqsim · 167 stars · license Apache-2.0 · pushed 2026-11-08 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_d4d3dhuu5pc5g6ba GET https://markdownregistry.com/api/v1/resolve?ref=equinor/neqsim/neqsim-controllability-operability GET https://markdownregistry.com/api/v1/blob/72210f054ef2a0f56291dfb374f3e11eee9ea5b8cd0abc3554a59fd47d00f5f9
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.