neqsim-pid-process-operations

neqsim-pid-process-operations is a skill for Claude Code, Codex from equinor/neqsim. It costs 78 tokens per session (6,384 once invoked), scanned A, original, Apache-2.0.

A guide for connecting P&ID drawings, NeqSim process models, and plant data. A P&ID is an engineering diagram showing equipment, pipes, valves, instruments, and control connections.

In plain words
What is it for?
Use it to read P&IDs, build process topology, link instrument tags to historian data, determine active equipment, and assess changes such as blocked outlets, bypasses, recycles, drains, or vents.
Why use it?
It helps translate diagrams and plant measurements into operational scenarios that a simulation can evaluate, such as closing a valve or switching process trains.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to read P&IDs, build process topology, link instrument tags to historian data, determine active equipment, and assess changes such as blocked outlets, bypasses, recycles, drains, or vents.

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Install with agentmods
npx agentmods add skills/equinor/neqsim/neqsim-pid-process-operations
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add equinor/neqsim --skill neqsim-pid-process-operations
Clone the repo
git clone --depth 1 https://github.com/equinor/neqsim

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for neqsim-pid-process-operations

README.md
[![agentmods](https://agentmods.dev/badge/skills/equinor/neqsim/neqsim-pid-process-operations/github.svg)](https://agentmods.dev/skills/equinor/neqsim/neqsim-pid-process-operations)
Your own site
<a href="https://agentmods.dev/skills/equinor/neqsim/neqsim-pid-process-operations"><img src="https://agentmods.dev/badge/skills/equinor/neqsim/neqsim-pid-process-operations/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for neqsim-pid-process-operations

Your own site · 80×15
<a href="https://agentmods.dev/skills/equinor/neqsim/neqsim-pid-process-operations"><img src="https://agentmods.dev/badge/skills/equinor/neqsim/neqsim-pid-process-operations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 78 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,384 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 298
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00078 $0.06384
Opus 5.5 $0.00031 $0.02554
Sonnet 5.5 $0.00016 $0.01277
Haiku 4.5 $0.00008 $0.00638

Measured 1mo ago against content hash 498aeac517a8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

neqsim-pid-process-operations scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.github/skills/neqsim-pid-process-operations/SKILL.md · 572 lines

How it starts

The opening of the file, as written. The whole thing — 572 lines — stays where its author put it; the contents beside it link to each section on GitHub.

P&ID to Process Operations

This skill bridges P&ID interpretation, NeqSim process simulation, and plant historian data. It is for operational questions such as "what happens if this valve closes?", "which train is active?", "what inventory is trapped between these valves?", and "how will pressure, level, flow, flare load, or emissions change?"

Keep this public skill plant-agnostic. Do not include real facility names, operator-specific document numbers, internal historian source names, real tag maps, credentials, or private operating procedures. Put those details in a private prompt file or local private skill.

When to Use

  • Reading P&ID symbols, line numbers, valves, instruments, drains, vents, interlocks, and equipment connections.
  • Converting P&ID topology into a NeqSim ProcessSystem, ProcessModel, or PipingRouteBuilder route.
  • Mapping P&ID instrument tags to plant historian tags read by tagreader.
  • Determining active train/equipment state from valves, flows, pressures, levels, temperatures, and run-status tags.
  • Evaluating steady-state process effects of valve position changes, blocked outlets, bypasses, recycles, drains, or alternate routing.
  • Evaluating dynamic effects of valve actions using runTransient, controllers, measurement devices, or dedicated blowdown/depressurization models.
  • Preparing WaterHammerStudy or MCP runWaterHammer inputs for fast liquid-line valve closure, pump trip, or check-valve slam.
  • Generating governed DEXPI engineering packages from a simulated ProcessSystem or multi-area ProcessModel, including available mechanical, piping, PSV, blowdown/flare and materials calculations.

Required Skill Stack

Use this skill with:

  • neqsim-technical-document-reading for P&ID image/document extraction,
  • neqsim-process-extraction for topology to JSON/route conversion,
  • neqsim-plant-data for tagreader reads, tag maps, and data quality,
  • neqsim-controllability-operability for steady-state operating envelopes and control valve checks,
  • neqsim-dynamic-simulation for transient valve-action studies,
  • neqsim-water-hammer for hydraulic surge screening from fast liquid-line events,
  • neqsim-depressurization-mdmt for blowdown and minimum-temperature cases,
  • neqsim-professional-reporting for evidence traceability and report outputs.

Read the full file on GitHub · 572 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 572 lines · 78 tokens per session scan A 498aeac517a8

Subscribe to this mod's changes

neqsim-pid-process-operations is a skill published in the GitHub repository equinor/neqsim (156 stars, last pushed today), licensed Apache-2.0. It adds 78 tokens to every session and 6,384 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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