SF6 Switchgear and PCB Equipment Inventory or Leak / Test Record

Operational inventories and records for two regulated insulating substances in electrical plant: sulphur hexafluoride (SF6) in gas-insulated switchgear and circuit breakers (stock held in equipment, top-up, leakage and recovery quantities in kg, as reported under Australian NGER Regulations reg 4.16 and Measurement Determination Part 4.5), and polychlorinated biphenyls (PCBs) in transformers and capacitors (oil test results in mg/kg classed as scheduled PCB material at or above 50 mg/kg, non-scheduled, or PCB-free at or below 2 mg/kg under the ANZECC PCB Management Plan; notifiable quantities above 10 kg). Records carry asset or serial numbers, substation / site locations and measured quantities. The PCB Management Plan, IChEMS advice, NGER Determination text and vendor guidance are decoys.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: Medium: SF6 and PCB terms are specific to electrical plant, but "PCB" also means printed circuit board, and the ANZECC plan, NGER Determination and vendor guidance quote the thresholds (50 mg/kg, 2 mg/kg, 10 kg, 0.0089). Enforce tiers need populated measurements tied to an asset row or labelled field, and ppm is accepted only in labelled PCB fields (electronics documents use ppm). Asset and serial number formats are organisation-specific, so rows are recognised by an uppercase letters-plus-digits token only. 85/75 are heuristic evidence tiers, not measured accuracy; test values are synthetic.
Jurisdictions: global, au
Regulations: National Greenhouse and Energy Reporting Regulations 2008 (Cth), National Greenhouse and Energy Reporting (Measurement) Determination 2008 (Cth) Part 4.5, ANZECC Polychlorinated Biphenyls Management Plan (Revised Edition April 2003), Environmental Protection Act 1994 (Qld)
Frameworks: QGISCF, ISO 14001
Data categories: environment, infrastructure, operations
Scope: narrow
Risk rating: 6
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?i)\b(?:SF6|sul(?:ph|f)ur\s+hexafluoride|polychlorinated\s+biphenyls?|PCBs?|scheduled\s+PCB\s+(?:material|waste)|non-scheduled\s+PCB|PCB[- ]free)\b

Corroborative evidence keywords

transformer, capacitor, circuit breaker, gas insulated switchgear, kVA, MVA, insulating oil, dielectric, leak, top up, recovery, disposal, NATA, density monitor

Proximity: 300 characters

Should match

PCB transformer and capacitor inventory - Northgate depot TX-0412 | Oakdale Zone Substation | 1500 kVA | oil 820 L | 12 mg/kg | non-scheduled TX-0419 | Oakdale Zone Substation | 750 kVA | oil 410 L | <2 mg/kg | PCB-free CAP-2207 | Ferris Road Switchyard | capacitor bank | 64 mg/kg | scheduled PCB material - notify Disposal booked with licensed contractor. — 85 tier - PCB inventory with three distinct asset rows carrying mg/kg results plus transformer / capacitor / disposal evidence
SF6 leak and top-up record - reporting year 2025-26 Asset number: GIS-B3-CB12 Substation: Harlow Creek 275 kV SF6 top-up: 4.6 kg (cylinder C-7781) Gas mass (nameplate): 38.0 kg Leak located at bay 3 density monitor flange; repair work order raised. — 85 tier - SF6 top-up record with labelled measurements, asset number and substation plus leak / density monitor evidence
SF6 stock register 2025-26 Circuit breaker CB-2231 Tarrant 132 kV bay: SF6 charge 7.2 kg — 75 tier - one SF6 inventory row
Transformer oil PCB test results PCB concentration (mg/kg): 38 Sample point: bottom drain valve — 75 tier - one labelled PCB concentration with no asset field

Should not match

Scheduled PCB material means PCB material with a PCB concentration at or above the threshold concentration of 50 mg/kg and a quantity of 50 g or more. PCB-free means a concentration at or below 2 mg/kg. More than 10 kg of PCBs is a notifiable quantity. This plan applies to all jurisdictions. — ANZECC PCB Management Plan definitions
4.102 Method 1 - emissions of sulphur hexafluoride from gas insulated switchgear and circuit breaker applications are estimated by multiplying the SF6 stock contained in the equipment by the default annual leakage rate of 0.0089. — NGER Measurement Determination text
SF6 inventory Asset number: ______ SF6 mass (kg): ____ Substation: [site] PCB concentration (mg/kg): ____ — Blank inventory form
PCB layout for controller board REV-0102: 4 layers, 2 oz copper, crystal Y1 tolerance 20 ppm, panel weight 1.2 kg. — Printed circuit board design note
Utilities are phasing out SF6 switchgear; a single 132 kV bay can hold more than 40 kg of the gas, according to industry groups. — News reporting
SF6 handling training exercise Circuit breaker CB-1001: SF6 charge 5.0 kg SF6 top-up: 1.0 kg — Training exercise (template-exclusion)

Known false positives

The ANZECC PCB Management Plan, IChEMS advice, NPI fact sheets, the NGER Measurement Determination and switchgear vendor guidance quote the same thresholds and units. Mitigation: Guidance states thresholds in prose without asset tokens or labelled measurements; nepc.gov.au / dcceew.gov.au / legislation.gov.au, "Revised Edition", compilation headers and guide framing are excluded from enforce tiers.
Printed circuit board ("PCB") engineering documents. Mitigation: Inventory rows only count mg/kg concentrations or kg quantities tied to SF6; ppm only counts in labelled PCB concentration fields; board documents stay at 65 discovery.
Public PCB registers kept by environment agencies (ANZECC plan clause 4.3) and CER published NGER data. Mitigation: A published agency register is still an inventory and may match; scope the policy to internal repositories if this matters.