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neqsim-piping-flexibility-screening

neqsim-piping-flexibility-screening is a skill for Claude Code, Codex from equinor/neqsim-community-skills. It costs 80 tokens per session (1,441 once invoked), scanned A, original, Apache-2.0.

A screening calculation for the strength and movement of process piping. It estimates pressure stress, thermal expansion, expansion stress range, and whether a flange rating can handle the pressure.

In plain words
What is it for?
Use it to assess a hot pipe run, estimate its thermal movement, check simplified stress limits, and review a flange pressure rating. It supports early piping-flexibility studies.
Why use it?
Hot piping expands and restrained piping can develop significant stress, which may require an expansion loop or detailed stress analysis. This gives an early check before building a full pipe-stress model.

Skill for Claude CodeCodex

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

not rated 4repo today A scan 80 tokens original Apache-2.0

Good fit Use it to assess a hot pipe run, estimate its thermal movement, check simplified stress limits, and review a flange pressure rating. It supports early piping-flexibility studies.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/equinor/neqsim-community-skills/neqsim-piping-flexibility-screening
View source ↗ equinor/neqsim-community-skills equinor.github.io
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-community-skills --skill neqsim-piping-flexibility-screening
Clone the repo
git clone --depth 1 https://github.com/equinor/neqsim-community-skills

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-piping-flexibility-screening

README.md
[![agentmods](https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/neqsim-piping-flexibility-screening/github.svg)](https://agentmods.dev/skills/equinor/neqsim-community-skills/neqsim-piping-flexibility-screening)
Your own site
<a href="https://agentmods.dev/skills/equinor/neqsim-community-skills/neqsim-piping-flexibility-screening"><img src="https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/neqsim-piping-flexibility-screening/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-piping-flexibility-screening

Your own site · 80×15
<a href="https://agentmods.dev/skills/equinor/neqsim-community-skills/neqsim-piping-flexibility-screening"><img src="https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/neqsim-piping-flexibility-screening.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,441 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.
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 $0.00080 $0.01441
Opus 5.5 $0.00032 $0.00576
Sonnet 5.5 $0.00016 $0.00288
Haiku 4.5 $0.00008 $0.00144

Measured 1mo ago against content hash 7f4bf0a4dd57, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

neqsim-piping-flexibility-screening 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.

The scan reads SKILL.md. This mod also ships 4 executable files (examples/basic_piping_flexibility_screening.py, src/piping_flexibility_screening/__init__.py, src/piping_flexibility_screening/model.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/process/neqsim-piping-flexibility-screening/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Piping Flexibility Screening

Use this skill for public, educational piping-flexibility screening. It estimates hoop (sustained) stress, free thermal expansion, displacement (expansion) stress range against a simplified allowable, and a flange-rating pressure check so an agent can scope a pipe-flexibility study before detailed pipe-stress analysis.

When to Use

  • When a user asks whether a hot pipe run needs an expansion loop or whether a flange class is adequate.
  • When an agent needs a quick hoop-stress and thermal-expansion estimate for a process line.
  • When examples must run without confidential isometrics, stress-analysis models, or company piping specs.

Inputs

  • outside_diameter_mm: pipe outside diameter in mm.
  • wall_thickness_mm: pipe wall thickness in mm.
  • design_pressure_bar: internal design pressure in bar gauge.
  • design_temperature_c: design (operating) temperature in degrees Celsius.
  • pipe_length_m: straight run length in m.
  • install_temperature_c: installation/ambient temperature in degrees Celsius, default 20.
  • anchor_to_anchor: whether the run is fully restrained anchor-to-anchor, default True.
  • youngs_modulus_mpa: Young's modulus in MPa, default 200000.
  • thermal_expansion_coeff_per_k: mean thermal expansion coefficient per K, default 1.2e-5.
  • allowable_stress_mpa: material allowable stress in MPa, default 138.
  • flange_rating_class: optional ASME B16.5 flange class (e.g. 150, 300, 600).
  • flange_allowable_pressure_bar: optional flange allowable pressure at temperature in bar.

Outputs

  • hoop_stress_mpa: Barlow hoop (sustained) stress.
  • hoop_stress_ratio: hoop stress divided by allowable stress.
  • delta_temperature_k: design minus install temperature difference.
  • free_thermal_expansion_mm: unrestrained thermal growth of the run.
  • displacement_stress_mpa: displacement (expansion) stress estimate.
  • allowable_stress_range_mpa: simplified allowable stress range.
  • displacement_stress_ratio: displacement stress divided by the allowable range.
  • flange_pressure_ratio: design pressure divided by flange allowable pressure, or null.
  • stress_warning: ok, watch, hoop-stress-exceeded, or expansion-stress-exceeded.
  • flange_warning: ok, flange-overpressure, or no-rating.
  • assumptions: public assumptions used by the placeholder model.

Read the full file on GitHub · 124 lines

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 124 lines · 80 tokens per session scan A 7f4bf0a4dd57

Subscribe to this mod's changes

neqsim-piping-flexibility-screening is a skill published in the GitHub repository equinor/neqsim-community-skills (4 stars, last pushed today), licensed Apache-2.0. It adds 80 tokens to every session and 1,441 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 2026-09-19.

Scientific
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