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neqsim-acoustic-induced-vibration-screening

neqsim-acoustic-induced-vibration-screening is a skill for Claude Code, Codex from equinor/neqsim-community-skills. It costs 93 tokens per session (1,408 once invoked), scanned A, original, Apache-2.0.

An educational check for acoustic-induced vibration, where loud pressure changes from a gas valve or restriction can shake and damage nearby piping. It estimates sound power and a likelihood-of-failure indicator using a published screening approach.

In plain words
What is it for?
Use it to screen control valves, relief valves, and restriction orifices from flow, pressure, and downstream pipe dimensions.
Why use it?
It provides an early warning after a large gas pressure drop, before commissioning a detailed piping-vibration assessment with vendor and project data.

Skill for Claude CodeCodex

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

not rated 4repo 4d ago A scan 93 tokens original Apache-2.0

Good fit Use it to screen control valves, relief valves, and restriction orifices from flow, pressure, and downstream pipe dimensions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/equinor/neqsim-community-skills/neqsim-acoustic-induced-vibration-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-acoustic-induced-vibration-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-acoustic-induced-vibration-screening

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/equinor/neqsim-community-skills/neqsim-acoustic-induced-vibration-screening"><img src="https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/neqsim-acoustic-induced-vibration-screening.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,408 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 $0.00093 $0.01408
Opus 5.5 $0.00037 $0.00563
Sonnet 5.5 $0.00019 $0.00282
Haiku 4.5 $0.00009 $0.00141

Measured 1mo ago against content hash 27c24b375b4a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

neqsim-acoustic-induced-vibration-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_acoustic_induced_vibration_screening.py, src/acoustic_induced_vibration_screening/__init__.py, src/acoustic_induced_vibration_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-acoustic-induced-vibration-screening/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Acoustic-Induced Vibration Screening

Use this skill for public, educational acoustic-induced-vibration (AIV) screening of gas pressure-reducing devices. It estimates the generated sound power level, the pipe diameter-to-thickness ratio, an allowable sound power level, and a likelihood-of-failure (LOF) index so an agent can scope an AIV study before a detailed piping-vibration assessment. It complements the flow-induced-vibration-screening skill, which covers gas flow-induced vibration through a kinetic-energy index.

When to Use

  • When a user asks whether a control valve, relief valve, or restriction orifice creates an AIV risk.
  • When an agent needs a quick sound-power-level and LOF estimate downstream of a high pressure drop.
  • When examples must run without confidential valve data, vendor noise curves, or company specs.

Inputs

  • mass_flow_kg_s: gas mass flow through the device in kg/s.
  • upstream_pressure_bar: upstream pressure P1 in bar absolute.
  • downstream_pressure_bar: downstream pressure P2 in bar absolute.
  • pipe_outside_diameter_mm: downstream pipe outside diameter in mm.
  • wall_thickness_mm: downstream pipe wall thickness in mm.
  • molecular_weight: gas molecular weight, default 19.
  • temperature_k: gas temperature in kelvin, default 313.15.
  • downstream_pipe_length_m: downstream pipe length in m, default 10.
  • sound_power_level_db: optional measured/known sound power level; if omitted it is computed.

Outputs

  • pressure_drop_ratio: (P1 - P2) / P1.
  • sound_power_level_db: supplied or computed sound power level in dB.
  • diameter_thickness_ratio: pipe D / t.
  • allowable_sound_power_level_db: allowable sound power level from the D / t correlation.
  • likelihood_of_failure: dimensionless AIV LOF index.
  • downstream_pipe_length_m: echoed downstream pipe length.
  • risk_warning: low-risk, medium-risk, or high-risk.
  • assumptions: public assumptions used by the placeholder model.

Engineering Method

Read the full file on GitHub · 114 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 · 114 lines · 93 tokens per session scan A 27c24b375b4a

Subscribe to this mod's changes

neqsim-acoustic-induced-vibration-screening is a skill published in the GitHub repository equinor/neqsim-community-skills (4 stars, last pushed 4d ago), licensed Apache-2.0. It adds 93 tokens to every session and 1,408 once invoked, about $0.0004 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
Related

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neqsim-acoustic-induced-vibration-screening next to 6 skills from other repositories
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