Iranian Classification Society Rules

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Section 1 General


101. General


1.The requirements in this Chapter apply to the machinery installations of the installation. Equipments and systems of the drilling and production systems are not covered by these requirements.


2. The machinery installations of units, except where specially required in this chapter, are to comply with the relevant requirements in Ch 5, Ch 7, Ch 8 and Ch 9 of Guidance for Mobile Offshore Drilling Units.


3. Piping system design, fabrication and testing are to comply with the requirements in this Chapter and standards recognized by the Society, such as ASME B31, "Code for Pressure Piping", latest edition.


102. Plans and documents to be Submitted

The following plans and documents are to be submitted in triplicate to the Society.

(1) General arrangement of machinery spaces

(2) Plans and documents of boilers and pressure vessels, engines and other equipments specified in

Pt 5, Ch 1 of Rules for the Classification of Steel Ships.

(3) Plans and documents specified in Pt 5, Ch 1, 202. of Rules for the Classification of Steel Ships, where applicable.

(4) An arrangement plan clearly indicating the hazardous areas as outlined in 103.

(5) Complete particulars of the ventilating system including capacities of fans, number of complete air changes per minute, air flow, area subject to positive and negative pressure, and location of self-closing doors.

(6) A description of the ventilating system for all hazardous areas

(7) Piping and instrumentation diagram


103. Definition


1. Hazardous space means space to be classified on the basis of the latest edition of API RP 505, "Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1 and Zone 2", or an equivalent recognized standard.