15. (1) All structural elements that are part of an installation and the failure of which as a result of corrosion would cause a safety hazard shall be protected or constructed with extra material so as to prevent the degree of corrosion that may cause that structural element to fail and shall be protected against corrosion in accordance with section 4.15 of Canadian Standards Association CAN/CSA-S471-92, General Requirements, Design Criteria, the Environment, and Loads.
(2) Corrosion protection systems for installations shall be designed, installed and maintained in accordance with
(a) section 15 of Canadian Standards Association CAN/CSA-S473-92, Steel Structures, Offshore Structures, in the case of steel platforms; and
(b) sections 4.9.5, 5.1.1, 5.3, 5.4.2, 5.6, 5.10 and 11.19 of Canadian Standards Association Preliminary Standard S474-M1989, Concrete Structures, in the case of concrete platforms.
(3) All corrosion protection systems on an installation shall be designed so that adjustment, repair or replacement can be done on site, except where
(a) dry dock surveys are possible and are scheduled at a frequency of five years or less; or
(b) the corrosion protection system is a cathodic protection system that has a design life exceeding that of the installation.
16. Every crane on an installation shall
(a) be designed and constructed in accordance with American Petroleum Institute Spec 2C, Specification for Offshore Cranes; and
(b) be operated and maintained in accordance with American Petroleum Institute RP 2D, Recommended Practice for Operation and Maintenance of Offshore Cranes.
Gas Release System
17. (1) In this section, “gas release system” means a system for releasing gas and combustible liquid from an installation, and includes a flare system, a pressure relief system, a depressurizing system and a cold vent system.
(2) Every gas release system shall be designed and located, taking into account the amount of combustibles to be released, the prevailing winds, the location of other equipment and facilities, including rigs, the dependent personnel accommodation, the air intake system, embarkation points, muster areas, the helicopter approaches and other factors affecting the safe, normal flaring or emergency release of the combustible liquid, gases or vapours, so that when the system is operating it will not damage the installation, other installations, the land or other platforms in the vicinity used for the exploration or exploitation of resources, or injure any person.
(3) Every gas release system shall be designed and installed in accordance with
(a) American Petroleum Institute RP 520, Recommended Practice for the Design and Installation of Pressure-Relieving Systems in Refineries;
(b) American Petroleum Institute RP 521, Guide for Pressure-Relieving and Depressuring Systems;
(c) American Petroleum Institute Standard 526, Flanged Steel Safety-Relief Valves;
(d) American Petroleum Institute Standard 527, Seat Tightness of Pressure Relief Valves; and
(e) American Petroleum Institute Standard 2000, Venting Atmospheric and Low-Pressure Storage Tanks.
(4) Every gas release system shall be designed and constructed to ensure that oxygen cannot enter the system during normal operation.
(5) Any flare boom and its associated equipment shall be designed
(a) to ensure a continuous flame using an automatic igniter system;
(b) to withstand the radiated heat at the maximum venting rate;
(c) to prevent flashback; and
(d) to withstand all loads to which they may be subjected.
(6) Every gas release system shall be designed to limit to the acceptable levels permitted by the Oil and Gas Occupational Safety and Health Regulations the noise that may occur as the gas expands.
(7) With the exception of water, any liquid that cannot be safely and reliably burned at the flare tip of a gas release system shall be removed from the gas before it enters the flare.
(8) Any vent that is used to release gas to the atmosphere without combustion shall be located and designed to minimize the risk of accidental ignition of the gas.
(9) Every gas release system shall be designed and installed so that, taking into account the prevailing wind conditions, the maximum radiation on areas where personnel may be located, from the automatically ignited flame of a flare or vent, will be
(a) 6.3 kW/m2, where the period of exposure will not be greater than one minute;
(b) 4.72 kW/m2, where the period of exposure will be greater than one minute but not greater than one hour; and
(c) l.9 kW/m2, where the period of exposure will be greater than one hour.
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