neqsim-noise-screening

neqsim-noise-screening is a skill for Claude Code, Codex from equinor/neqsim-community-skills. It costs 76 tokens per session (1,763 once invoked), scanned A, original, Apache-2.0.

A preliminary check of noise from a gas valve or restriction at a specified receiver distance. It can use a measured sound level or an energy-based estimate from gas flow and pressure drop.

In plain words
What is it for?
Screening whether a gas restriction may be noisy and routing cases toward detailed noise prediction; it is not by itself a personnel-exposure or vibration-fatigue assessment.
Why use it?
It provides an early noise flag while keeping source noise, workplace assessment, and vibration-risk decisions separate.

Skill for Claude CodeCodex

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

Good fit Screening whether a gas restriction may be noisy and routing cases toward detailed noise prediction; it is not by itself a personnel-exposure or vibration-fatigue assessment.

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Install with agentmods
npx agentmods add skills/equinor/neqsim-community-skills/noise-screening
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 noise-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-noise-screening

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/equinor/neqsim-community-skills/noise-screening"><img src="https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/noise-screening.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,763 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 $0.00076 $0.01763
Opus 5 $0.00038 $0.00881
Sonnet 5 $0.00015 $0.00353
Haiku 4.5 $0.00008 $0.00176

Measured 11d ago against content hash f65493946ecb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

neqsim-noise-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 11d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (examples/basic_noise_screening.py, src/noise_screening/__init__.py, src/noise_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/noise-screening/SKILL.md · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Noise Screening

Use this skill to screen gas-valve and restriction noise at a stated receiver distance from either a representative operating measurement or a conservative energy model. Keep source prediction, receiver/workplace assessment, and acoustic-induced-vibration (AIV) screening as separate decisions.

When to Use

  • When a user asks whether a gas valve or restriction is likely to be noisy.
  • When current measured noise must be evaluated at a stated operating condition and receiver position.
  • When an agent needs a quick action/high noise flag before detailed engineering.
  • When examples must run without confidential valve trim or vendor noise data.
  • Do not use this skill alone to accept personnel exposure, acoustic fatigue, or AIV.

Inputs

  • mass_flow: gas mass flow in kg/s.
  • pressure_drop: pressure drop across the restriction in bar.
  • inlet_density: inlet gas density in kg/m3.
  • sound_speed: speed of sound in m/s (provide this, or temperature and molar mass).
  • distance: source-to-receiver distance in m, default 1 m.
  • measured_spl_at_distance: optional representative A-weighted measurement in dBA at distance.
  • measured_uncertainty_db: optional positive measurement uncertainty in dB.
  • specific_heat_ratio: ratio of specific heats k, default 1.3.
  • temperature: gas temperature in K (used to estimate sound speed).
  • molar_mass: gas molar mass in g/mol (used to estimate sound speed).
  • Constructor overrides for action level, high level, model uncertainty, acoustic efficiency, and transmission loss.

Outputs

  • vena_contracta_velocity_m_s: estimated velocity at the restriction.
  • mach_number: velocity divided by the speed of sound.
  • internal_sound_power_level_db: internal sound power level (re 1 pW).
  • estimated_spl_1m_dba: screening sound-pressure level at 1 m.
  • estimated_spl_at_distance_dba: assessed A-weighted level at the receiver distance.
  • assessment_basis: measurement or screening-model.
  • noise_warning: ok, action, or high.
  • uncertainty_db, standards_basis, and assumptions for review and escalation.

Read the full file on GitHub · 145 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. 11d ago First seen · 145 lines · 76 tokens per session scan A f65493946ecb

Subscribe to this mod's changes

neqsim-noise-screening is a skill published in the GitHub repository equinor/neqsim-community-skills (2 stars, last pushed yesterday), licensed Apache-2.0. It adds 76 tokens to every session and 1,763 once invoked, about $0.0004 per session on Opus 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 2026-08-31.

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