Standards & Regulatory Compliance

RHYA operates to internationally recognized codes and standards across all service lines

Compliance-Driven Engineering

Regulatory compliance is not optional—it's foundational to asset integrity and operational safety.

RHYA's engineering services are designed around the requirements of API, ASME, AS/NZS, and ISO standards. Our inspectors, engineers, and trainers maintain current certifications and stay updated on code revisions to ensure your assets meet jurisdictional requirements.

API Standards

API-510

Pressure Vessel Inspection Code

Covers in-service inspection, repair, alteration, and rerating of pressure vessels. Applicable to vessels constructed to ASME Section VIII or equivalent.

  • Inspection organization requirements
  • Inspector qualifications
  • Inspection intervals and methods
  • Fitness-for-service evaluation

API-570

Piping Inspection Code

Provides requirements for inspection, repair, alteration, and rerating of in-service piping systems.

  • Piping system classification
  • Inspection planning and intervals
  • Corrosion monitoring
  • Repair and alteration requirements

API-653

Tank Inspection, Repair, Alteration, and Reconstruction

Standard for above-ground storage tanks constructed per API-650 or equivalent.

  • Tank inspection intervals
  • Bottom inspection methods (MFL, UT)
  • Settlement analysis
  • Repair procedures and welding

API-579 / ASME FFS-1

Fitness-for-Service

Comprehensive methodology for assessing damaged equipment and determining safe operating limits.

  • Assessment levels (1, 2, 3)
  • Local thin area evaluation
  • Crack-like flaw assessment
  • Remaining life prediction

API-580

Risk-Based Inspection

Framework for developing and implementing risk-based inspection (RBI) programs.

  • Qualitative and quantitative RBI
  • Probability of failure (POF)
  • Consequence of failure (COF)
  • Inspection planning optimization

ASME Standards

ASME Section VIII

Pressure Vessel Design & Construction

Primary code for new pressure vessel design (Div. 1, Div. 2, Div. 3).

  • Division 1: Design by rules
  • Division 2: Design by analysis
  • Material specifications
  • Fabrication requirements

ASME B31.3

Process Piping

Design, materials, fabrication, and testing of process piping systems.

  • Piping design calculations
  • Material selection
  • Welding and heat treatment
  • Pressure testing requirements

ASME Section IX

Welding & Brazing Qualifications

Standard for qualifying welders, welding procedures, and brazers.

  • Procedure qualification (PQR/WPS)
  • Welder performance qualification
  • Essential variables
  • Testing and documentation

ASME PCC-2

Repair of Pressure Equipment and Piping

Guidelines for repair and alteration of pressure equipment.

  • Weld repair methods
  • Composite repair systems
  • Leak sealing techniques
  • Post-repair inspection

Australian & New Zealand Standards

AS/NZS 3788

Pressure Equipment - In-service Inspection

Australian standard for in-service inspection of pressure equipment.

  • Inspector authorization
  • Inspection frequencies
  • Documentation requirements
  • Exemption criteria

AS 1210

Pressure Vessels

Design, fabrication, testing, and materials for pressure vessels.

  • Design calculations
  • Material specifications
  • Fabrication procedures
  • Inspection and testing

AS 4343

Pressure Equipment - Hazard Levels

Classification of pressure equipment by hazard level.

  • Hazard level determination
  • Design verification requirements
  • Inspection and testing criteria
  • Registration requirements

AS/NZS 4130

Pressure Equipment - Manufacture

Requirements for manufacturing pressure equipment.

  • Manufacturer responsibilities
  • Quality system requirements
  • Material traceability
  • Non-destructive testing

AS 1554

Structural Steel Welding

Welding of steel structures (Parts 1-6).

  • Welding procedures
  • Welder qualification
  • Inspection and testing
  • Acceptance criteria

AS 2033

Installation of Metal Piping

Installation requirements for metal piping systems.

  • Installation procedures
  • Pressure testing
  • Support and restraint
  • Commissioning requirements

ISO Management Systems

ISO 9001:2015

Quality Management System

International standard for quality management ensuring consistent service delivery.

ISO 45001:2018

Occupational Health & Safety

Framework for managing workplace health and safety risks.

ISO 14001:2015

Environmental Management

Standard for environmental management and sustainability.

Need Standards Guidance?

Our team can help determine applicable codes for your project

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