Overview
EN ISO 20321:2020 - "Petroleum, petrochemical and natural gas industries - Safety of machineries - Powered elevators" (CEN adoption of ISO 20321:2020) specifies general safety requirements for the design, testing and production of powered elevators used in petroleum, petrochemical and natural gas industries. It covers both onshore and offshore applications and addresses hazards, protective measures and verification for powered elevators built on or after the publication date. The standard is aligned with the European Machinery Directive (Directive 2006/42/EC) as noted in Annex A.
Important exclusions: the standard does not apply to other elevator types or certain lifting accessories (for example remote-control devices, lifting nubbins, lifting plugs, lifting subs, internal gripping devices, equipment for lifting tubulars from/onto vessels, elevator links or bails). It also excludes powered elevators manufactured prior to publication.
Key Topics and Requirements
- General safety requirements for powered elevators covering lifecycle stages from manufacture to operation.
- Mechanical strength and fatigue life expectations and verification tests (normative tests provided in Annex B).
- Safety design elements: ergonomic design, secure fastening and DROPS prevention, suspension points, guarding of moving parts and pinch points.
- Protective measures: surface/edge risks, size/type verification to prevent misfitting, static electricity control, loss-of-stability mitigation, and explosion prevention for hazardous atmospheres.
- Controls and feedback: requirements for control systems, external power sources, feedback signals and defined danger zones.
- Stop and failure modes: defined procedures and safety for start, normal/operational stops, emergency shutdown and power supply failure.
- Pre-lift functions: practical requirements for wrapping, securing, locking and verification of readiness (including “black box” approach and closed‑ring powered elevator specifics).
- Instructions and marking: manufacturer documentation, user instructions and mandatory identification/marking provisions.
Applications and Users
Who uses EN ISO 20321:2020:
- OEMs and designers of powered elevators for petroleum and petrochemical operations
- Offshore and onshore rig owners, platform operators and asset managers
- Safety, inspection and maintenance teams responsible for lifting appliances
- Procurement, certification and conformity assessment bodies ensuring compliance with machinery safety requirements
- Engineers tasked with risk assessments and lifting operations in upstream and midstream facilities
Practical applications include selection and specification of powered elevators for pipe handling, safe-lift preparation workflows, maintenance schedules, and compliance documentation for commissioning and audits.
Related Standards
- The standard was developed by ISO/TC 67 (materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries) and is related to the European Machinery Directive (Directive 2006/42/EC) as referenced in Annex A.
- Users should consider other applicable machinery and lifting equipment safety standards and national regulations when implementing EN ISO 20321:2020.
Keywords: EN ISO 20321:2020, powered elevators, petroleum industry safety, petrochemical lifting, offshore elevator safety, machinery directive, DROPS prevention, wrapping securing locking.