Utrustning för hantering av petroleumprodukter och naturgas

This document defines the requirements for design, mechanical integrity, and sizing for all types of electric, pneumatic and hydraulic actuators and related components, including mounting kits, used on valves that conform to API Specification 6D/ISO 14313. Actuators are designed to be assembled fully as a single unit or assembled from modules. This standard is not applicable to actuators installed on control valves, or valves used for regulation. This standard does not apply to actuators for valves in subsea service. Also excluded are requirements for handheld powered devices, instrument tubing and fittings.

This part of ISO 21809 specifies requirements for field joint coating of seamless or welded steel pipes for buried and submerged sections of pipeline transportation systems used in the petroleum, petrochemical and natural gas industries as defined in ISO 13623. This part of ISO 21809 specifies the qualification, application and testing of the corrosion protection coatings applied to steel surfaces left bare after the joining of pipes and fittings (components) by welding. This part of ISO 21809 defines and codifies in Table 1 the different types of field joint coatings for pipelines. This part of ISO 21809 does not address requirements for additional mechanical protection, for thermal insulation or for joint infills of concrete weight-coated pipes. NOTE Field joints of pipes and fittings coated in accordance with this part of ISO 21809 are considered suitable for further protection by means of cathodic protection.

This International Standard specifies the design, minimum safety requirements and inspection and testing procedures for high-pressure natural gas (HPNG) marine transfer arms intended for FSRU/ FRU/ FSU applications. High-pressure transfer arms are considered to be ship-to-shore systems transferring pressurized gas from floating units to any part of a gas grid. Although the requirements for power/control systems are covered, this International Standard does not include all the details for the design and fabrication of standard parts and fittings associated with transfer arms. This International Standard is supplementary to local or national standards and regulations and is additional to the requirements of ISO 28460. This standard was based on general hydraulic system. Other control system, e.g. using only electrical or other power generation may be acceptable if it has been developed, tested and qualified for related standards and if it ensures all the functions safety and functional performance described in Clause 8 for the hydraulic and electrical control system. This International Standard may also be used for existing facilities.