riskfw 0.1.0

Risk Framework — Safety calculations for explosion protection (TRGS 721/722, ATEX, EN 1127-1)

riskfw — Risk Framework

Pure-Python safety calculation library for explosion protection. No Django, no HTTP, no external dependencies — stdlib only.

Standards

Module	Standard
riskfw.zones	TRGS 721:2017-09, TRGS 722:2012-08
riskfw.equipment	ATEX 2014/34/EU, IEC 60079-0
riskfw.ignition	EN 1127-1:2019
riskfw.substances	GESTIS/DGUV (static, auditable)

Installation

pip install riskfw

Or as Git dependency (pre-release):

riskfw @ git+https://github.com/achimdehnert/riskfw@v0.1.0

Quick Start

from riskfw.zones import calculate_zone_extent
from riskfw.equipment import check_equipment_suitability
from riskfw.substances import get_substance_properties

# Zone calculation per TRGS 721
result = calculate_zone_extent(
    release_rate_kg_s=0.1,
    ventilation_rate_m3_s=2.0,
    substance_name="ethanol",
    release_type="jet",
)
print(result.zone_type)   # ZoneType.ZONE_1
print(result.radius_m)

# ATEX equipment check
check = check_equipment_suitability(ex_marking="II 2G Ex d IIB T4", zone="1")
print(check.is_suitable)  # True

# Substance lookup
props = get_substance_properties("ethanol")
print(props.lower_explosion_limit)  # 3.1

Versioning

• MAJOR: Norm edition changes affecting calculation results
• MINOR: New norm support added
• PATCH: Bugfix or new substances without normative impact

License

MIT