Iranian Classification Society Rules

SECTION 1 General

101. Application

1. This Annex apply to the drilling systems which or intended to be registered under the Society.

are installed on the unit classed with the Society

2. The requirements not specified in this Annex are to be in accordance with recognized national or international standards.

3. The following standards.

standards may be adequately referred as recognized national or international

Systems	Standard No.	Standard Title
Blowout Preventer (BOP) System	API Spec 6A	Specification for Wellhead and Christmas Tree Equipment
	API Spec 16A	Specification for Drill-through Equipment
	API Spec 16D	Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment
	API RP 53	Blowout Prevention Equipment Systems for Drilling Operations
	API RP 59	Recommended Practice for Well Control Operations
Lower Marine Riser Package (LMRP)	API Spec 16A	Specification for Drill-through Equipment
	API Spec 16D	Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment
	API Spec 16F	Specification for Marine Drilling Riser Equipment
	API Spec 16R	Marine Drilling Riser Couplings
	API PR 16Q	Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems
Choke and Kill System	API Spec 6A	Specification for Wellhead and Christmas Tree Equipment
	API Spec 16C	Choke and Kill Systems
	API Spec 16F	Specification for Marine Drilling Riser Equipment
	API RP 53	Blowout Prevention Equipment Systems for Drilling Operations
	API RP 59	Recommended Practice for Well Control Operations
Diverter System	API Spec 16D	Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment
	API Spec 6A	Specification for Wellhead and Christmas Tree Equipment
	API RP 53	Blowout Prevention Equipment Systems for Drilling Operations
	API RP 64	Recommended Practice for Well Control Operations
Auxiliary Well Control System	API Spec 7-1	Specification for Rotary Drill Stem Elements
	API Spec 16A	Specification for Drill-through Equipment
	API RP 53	Blowout Prevention Equipment Systems for Drilling Operations

Systems	Standard No.			Standard Title
Marine Drilling Riser System	API	Spec		16A	Specification for Drill-through Equipment
	API	Spec 16Q		Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems
	API	Spec 16R		Marine Drilling Riser Couplings
	API	Spec 16J		Comparison of Marine Drilling Riser Analyses
	API	Spec 16F		Specification for Marine Drilling Riser Equipment
Hoisting, Lifting, Rotating and Pipe Handling System	API	Spec		7F	Oil Field Chain and Sprockets
	API	Spec 7K		Specification for Drilling and Well Servicing Equipment
	API	Spec 8A		Drilling and Production Hoisting Equipment
	API	Spec 8C		Specification for Drilling and Production Hoisting Equipment (PSL 1 and PSL 2)
	API	Spec 2C		Offshore Cranes
	API	Spec 9A		Specification for Wire Rope
Derrick	API	Spec		4G	Recommended Practice for Use and Procedures for Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures
	API	Spec 4F		Drilling and Well Servicing Structures
Well Test System	API	Spec		6A	Specification for Wellhead and Christmas Tree Equipment
	API	Spec 16C		Choke and Kill Systems
	API	Spec 6D		Specification for Pipeline Valves
	API	Spec 6AV1		Specification for Verification Test of Wellhead Surface Safety Valves and Underwater Safety Valves for Offshore Service
Materials	API	RP	2A-WSD	Planning, Designing and Working Stress Design	Constructing	Fixed	Offshore	Platforms—
	API	Spec 4F		Drilling and Well Servicing Structures
Piping	ASME B			31.3	Process Piping
	API	Spec 16C		Choke and Kill Systems
	API	Spec 16D		Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment
	API	RP 14E		Recommended Practice for Design and Installation of Offshore Production Platform Piping Systems

102. Scope

This Annex covers the drilling system which includes the following. However items may differ ac- cording to type of units and is not limited to the following.

1. Well control system

(1) Blowout preventer (BOP) system

(2) Lower marine riser package (LMRP)

(3) Choke and kill system

(4) Diverter system

(5) Auxiliary well control system

2. Marine drilling riser system

3. Drill string compensation system

4. Mud and cementing system

(1) Bulk storage and transferring systems

(2) Mud circulating and mixing system

(3) Cementing system

5. Hoisting, lifting, rotating and pipe handling system

6. Derrick

7. Well test system

8. Burner booms

103. Equivalence and novel feature

1. Drilling systems which are not in compliance with this Annex may be acceptable provided that sat- isfactory service experience or a systematic analysis based on sound engineering principles demon- strate their overall safety and function.

2. Drilling systems which are not in compliance with this Annex may be acceptable provided that Systems are designed and constructed in accordance with recognized national standards or interna- tional standards.

3. The Society may consider the classification of systems based on or applying novel design principles or features, to which the Annex is not directly applicable, on the basis of experiments, calculations or other supporting information provided to the Society.

4. Risk evaluations may be applicable for the justification of alternative arrangements or novel features.

104. Design conditions

The drilling systems are to be designed to account erational, and test loads, or combination thereof.

1. Environmental conditions

(1) Earthquake

(2) Wind

(3) Ice

(4) Temperature

(5) Current, waves

(6) 1, 10, 50, 100 year storm event

2. Operational conditions

(1) Static pressure

(2) Vibration

(3) Transient pressure excursion

for all applicable following environmental, op-

(4) Acceleration loads due to movement

(5) Temperature excursion

(6) Retrieval

(7) Tension

(8) Bending

(9) Drifting

3. Transportation

4. Installation

5. Commissioning

6. Storage and maintenance

7. Test loads

of the unit

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