neqsim-standards-lookup

name	neqsim-standards-lookup
description	Industry standards lookup and compliance tracking for NeqSim engineering tasks. USE WHEN: any engineering task requires standards compliance (API, ISO, NORSOK, DNV, ASME, EN, ASTM), risk assessment, or safety analysis. Provides equipment-to-standards mapping, database query patterns, results.json schema for standards_applied, and risk standards quick-reference.
last_verified	2026-07-04

NeqSim Standards Lookup

Reference for identifying, applying, and documenting industry standards compliance in every engineering task. All tasks — Quick, Standard, or Comprehensive — must identify applicable standards proportional to task depth.

Standards Identification (MANDATORY First Step)

Before any simulation or analysis, identify applicable standards:

Task Scale	Standards Requirement
Quick	1-line note: "Per [STANDARD]" or "N/A — property lookup"
Standard	Table of applicable standards with scope and status
Comprehensive	Full table with clause numbers, design values, and compliance evidence

Equipment → Standards Mapping

NeqSim's standards database is in src/main/resources/designdata/standards/. The index file standards_index.csv maps equipment types to applicable standards:

Equipment Type	Primary Standards	NeqSim CSV File
Separator, ThreePhaseSeparator, GasScrubber	NORSOK P-001, API 12J, ASME VIII	norsok_standards.csv, api_standards.csv, asme_standards.csv
Compressor	API 617, NORSOK P-002	api_standards.csv, norsok_standards.csv
Pump	API 610	api_standards.csv
Pipeline, AdiabaticPipe, MultiphasePipe	NORSOK L-001, ASME B31.3/B31.4/B31.8, DNV-ST-F101	norsok_standards.csv, asme_standards.csv, dnv_iso_en_standards.csv
HeatExchanger, Heater, Cooler	API 660/661, TEMA	api_standards.csv
Tank	API 650/620	api_standards.csv
Valve	ASME B31.3	asme_standards.csv
Subsea equipment	NORSOK U-001, DNV-ST-F101	norsok_standards.csv, subsea_standards.csv
Well casing/tubing	API 5CT, API TR 5C3, NORSOK D-010	api_standards.csv, norsok_standards.csv
Flange	ASME B16.5	asme_standards.csv
CO2 corrosion / materials selection	NORSOK M-506, ISO 15156 / NACE MR0175, NORSOK M-001	norsok_standards.csv — see NorsokM506CorrosionRate / NorsokM506ElectrolyteBridge (process.corrosion)
Mineral scale / produced water	(industry practice; Davies + Ksp(T))	ElectrolyteScaleCalculator / ScaleKinetics / BrineMixingScaleEvaluator (process.chemistry.scale)

TR/NORSOK Integration Classes

Use these Java classes when a task references Equinor technical requirements, STS0131, TR1965, TR2237, or NORSOK P-002:

Scope	Class	Use
Gas scrubber conformance	neqsim.process.mechanicaldesign.separator.conformity.ConformityRuleSet.create("TR1965")	Checks TR1965 K-factor, gas/liquid margins, entrainment, and scrubber layout metadata configured on GasScrubberMechanicalDesign.
Blowdown fire acceptance	neqsim.process.safety.depressurization.STS0131AcceptanceCriteria	Evaluates DepressurizationResult against time-to-escape/time-to-rupture pressure, inventory, and escalated fire-rate limits.
Piping/line sizing	neqsim.process.mechanicaldesign.pipeline.NorsokP002LineSizingValidator	Screens PipeLineInterface velocity, pressure gradient, and erosional velocity using NORSOK P-002 style limits.
Leak detection sensitivity	neqsim.process.safety.leakdetection.MassBalanceLeakDetector	Estimates minimum detectable leak rate from flow, pressure, temperature, and linepack uncertainty.
Performance standards	neqsim.process.safety.barrier.TR2237Templates	Creates starter barrier registers with TR2237-style performance standards and NORSOK S-001 topic mappings.
Standards review	neqsim.process.safety.compliance.StandardsDesignReview	Converts supported calculated checks from a ProcessSystem into StandardsComplianceReport.
Overpressure LOPA targets	LOPAResult.getSTS0131OverpressureTargetFrequency(...)	Selects target event frequency from STS0131 pressure severity bands.
LEL endpoint policy	GasDispersionAnalyzer.builder().sts0131IntegralEndpoint()	Uses 20% LFL for integral dispersion tools; sts0131CfdEndpoint() uses 50% LFL.

TR1965 Gas Scrubber Pattern

GasScrubber scrubber = new GasScrubber("inlet scrubber", feed);
scrubber.run();
scrubber.initMechanicalDesign();
GasScrubberMechanicalDesign design = scrubber.getMechanicalDesign();
design.setInnerDiameter(2.0);
design.setMeshPad(3.0, 100.0);
design.setLaHHElevationM(0.5);
design.setInletDeviceElevationM(1.2);
design.setMeshPadElevationM(2.3);
design.setLiquidEntrainmentLitresPerMSm3(5.0);
design.setLiquidDesignMarginFraction(0.25);
design.setConformityRules("TR1965");
ConformityReport report = design.checkConformity();

STS0131 Blowdown Acceptance Pattern

DepressurizationResult blowdown = simulator.run();
STS0131AcceptanceCriteria criteria = new STS0131AcceptanceCriteria()
  .setTimeToEscapeS(120.0)
  .setEstimatedTimeToRuptureS(300.0)
  .setMaximumPressureAtRuptureBara(15.0)
  .setMaximumRemainingMassKg(500.0)
  .setMaximumEscalatedFireRateKgPerS(2.0);
STS0131AcceptanceResult acceptance = blowdown.evaluateSTS0131(criteria);

Database Query Pattern (Java)

// Query standards values for a specific equipment type
import neqsim.util.database.NeqSimProcessDesignDataBase;
import java.sql.*;

try (Connection conn = NeqSimProcessDesignDataBase.createConnection()) {
    String sql = "SELECT * FROM api_standards "
               + "WHERE EQUIPMENTTYPE = ? AND STANDARD_CODE = ?";
    PreparedStatement stmt = conn.prepareStatement(sql);
    stmt.setString(1, "Separator");
    stmt.setString(2, "API-12J");
    ResultSet rs = stmt.executeQuery();
    while (rs.next()) {
        String spec = rs.getString("SPECIFICATION");
        double minVal = rs.getDouble("MINVALUE");
        double maxVal = rs.getDouble("MAXVALUE");
        String unit = rs.getString("UNIT");
    }
}

Database Query Pattern (Python / Jupyter)

# Query via mechanical design classes
separator.initMechanicalDesign()
design = separator.getMechanicalDesign()
design.setDesignStandardCode("NORSOK-P-001")
design.setCompanySpecificDesignStandards("OperatorA")
design.readDesignSpecifications()
design.calcDesign()
print(design.toJson())

CSV Column Reference

All standards CSV files share this schema:

Column	Type	Description
STANDARD_CODE	String	Standard identifier (e.g., "API-12J", "NORSOK-P-001")
VERSION	String	Edition/revision (e.g., "8th Ed", "Rev 5")
EQUIPMENTTYPE	String	NeqSim class name (e.g., "Separator", "Compressor")
SPECIFICATION	String	Parameter name (e.g., "GasLoadFactor", "SurgeMargin")
MINVALUE	Double	Minimum allowed or typical low value
MAXVALUE	Double	Maximum allowed or typical high value
UNIT	String	Physical unit (e.g., "m/s", "%", "mm")
DESCRIPTION	String	Human-readable description

results.json — standards_applied Schema

Every task's results.json should include a standards_applied array:

"standards_applied": [
  {
    "code": "NORSOK P-001 Rev 5",
    "scope": "Separator sizing — K-factor and retention time",
    "status": "PASS",
    "design_value": 0.13,
    "limit": "0.12–0.15 m/s",
    "unit": "m/s",
    "clause": "Table A-1"
  },
  {
    "code": "API 617 8th Ed",
    "scope": "Compressor surge margin",
    "status": "PASS",
    "design_value": 12.5,
    "limit": ">10%",
    "unit": "%",
    "clause": "Section 2.6"
  },
  {
    "code": "DNV-ST-F101",
    "scope": "Pipeline wall thickness",
    "status": "INFO",
    "design_value": null,
    "limit": null,
    "unit": null,
    "clause": "Not applied — onshore pipeline"
  }
]

Required Fields

Field	Type	Required	Description
code	String	Yes	Standard code with version (e.g., "API 520 Part I 10th Ed")
scope	String	Yes	What aspect was checked (e.g., "Relief valve sizing")
status	String	Yes	PASS / FAIL / INFO / N/A
design_value	Number	No	Calculated value from simulation
limit	String	No	Standard's requirement or range
unit	String	No	Unit for design_value and limit
clause	String	No	Specific clause or table reference

Status Values

Status	Meaning
PASS	Design value meets the standard's requirement
FAIL	Design value violates the standard — action required
INFO	Standard identified and noted, no pass/fail applicable
N/A	Standard exists but does not apply to this specific case

Risk & Safety Standards Quick-Reference

Risk Assessment (ISO 31000 / NORSOK Z-013)

NeqSim classes in neqsim.process.equipment.failure:

Class	Standard	Purpose
RiskMatrix	ISO 31000, NORSOK Z-013	5×5 risk matrix with likelihood × consequence
RiskEvent	ISO 31000	Individual risk event with probability and consequence
RiskModel	ISO 31000, QRA	Monte Carlo simulation for risk quantification
AutomaticScenarioGenerator	IEC 61882 (HAZOP)	HAZOP deviation generation (NO_FLOW, HIGH_PRESSURE, etc.)

Safety Instrumented Systems (IEC 61508 / IEC 61511)

Class	Standard	Purpose
SafetyInstrumentedFunction	IEC 61508, IEC 61511	SIF with SIL rating (1–4) and PFD calculation
SISIntegratedRiskModel	IEC 61511, LOPA	Layer of Protection Analysis with IPL credit

Fire & Depressuring (API 521)

Class	Standard	Purpose
FireProtectionDesign	API 521	Fire case heat input, pool/jet fire modeling
AlarmTripScheduleGenerator	IEC 61511, NORSOK I-001	Alarm and trip schedule generation
NoiseAssessment	ISO 9613, NORSOK S-002	Equipment noise prediction

Risk Proportionality by Task Scale

Scale	Risk Requirement
Quick	Not required (unless safety-critical)
Standard	3–5 line risk table with top risks and mitigation
Comprehensive	Full ISO 31000 risk register with 5×5 matrix, mitigation, ALARP

Gas Quality Standards

NeqSim has extensive gas quality standard implementations in neqsim.standards.gasquality:

Standard	Class	Purpose
ISO 6976	Standard_ISO6976	Calorific value, Wobbe index, relative density
ISO 12213	Standard_ISO12213	Compression factor (AGA 8)
ISO 13443	Standard_ISO13443	Natural gas — standard reference conditions
ISO 14687	—	Hydrogen fuel quality
ISO 15403	—	Natural gas for vehicles (CNG)
AGA 3 (API 14.3)	UKofficialOFGEM_ISO6976	Orifice flow measurement
AGA 7	—	Turbine flow measurement
GPA 2145	Standard_ISO6976 (via)	Physical constants for hydrocarbons
EN 16723	—	Biomethane injection quality
EN 16726	—	Gas quality — H-gas specification

Oil Quality Standards

In neqsim.standards.oilquality:

Standard	Class	Purpose
ASTM D86	Standard_ASTM_D86	Distillation of petroleum products
ASTM D1160	Standard_ASTM_D1160	Vacuum distillation
ASTM D2887	Standard_ASTM_D2887	Simulated distillation (GC)
ASTM D6377	Standard_ASTM_D6377	Reid vapor pressure (VPCR4)

Typical Standards by Task Type

Type A — Property Calculation

• ISO 6976 (gas properties), GERG-2008 (compressibility)

Type B — Process Simulation

• NORSOK P-001 (process design), API 12J (separators), API 617 (compressors), TEMA (heat exchangers)

Type C — PVT Study

• ISO 6976, GPA 2145, ASTM D86/D2887 (oil characterization)

Type D — Standards Compliance

• Direct application of the requested standard

Type E — Feature Implementation

• Standards that the new feature must implement

Type F — Mechanical Design

• ASME VIII (vessels), DNV-ST-F101 (subsea pipe), NORSOK L-001 (piping), API 5CT (casing)

Type G — Workflow / Field Development

• NORSOK Z-013 (risk), ISO 31000 (risk management), NORSOK P-001 (process), company TRs

Post-Simulation Standards Check Pattern

After running a process simulation, check key results against standards:

# Example: Check separator K-factor against NORSOK P-001
k_factor = separator.getInternalDiameter()  # Get from results
# Look up limit from standards database
if k_factor < 0.12 or k_factor > 0.15:
    print("WARNING: K-factor outside NORSOK P-001 range (0.12-0.15 m/s)")
    standards_status = "FAIL"
else:
    standards_status = "PASS"

Workflow Integration

1. Phase 0 (Setup): Identify task type → look up applicable standards from mapping table above
2. Phase 1 (Scope): List standards in task_spec.md under "Applicable standards"
3. Phase 2 (Analysis): Use standards values as design inputs and validation limits
4. Phase 2 (Results): Populate standards_applied array in results.json
5. Phase 3 (Report): Standards compliance table auto-rendered in Word/HTML report