Recommended Practice for Subsea High Integrity Pressure Protection Systems (HIPPS)

Upstream Segment

API RECOMMENDED PRACTICE 17O FIRST EDITION, OCTOBER 2009

Special Notes

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Copyright © 2009 American Petroleum Institute

Foreword

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Suggested revisions are invited and should be submitted to the Standards Department, API, 1220 L Street, NW, Washington, D.C. 20005, standards@api.org.

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Contents

Page

1. Scope 1

2. Normative References 1

3. Terms, Definitions and Acronyms 2

   1. Terms and Definitions 2

   2. Acronyms, Abbreviations, and Symbols 4

4. System Considerations 6

   1. Introduction and Overview 6

   2. Production Characteristics 7

   3. Flowline Rupture Considerations 7

   4. Process Hazard and Risk Analysis 8

   5. Selection and Determination of SIL 8

   6. Safety Requirement Specification (SRS) 9

5. Design 10

   1. Design Basis Requirements 10

   2. Modes of Failure 13

   3. Temperature 13

   4. Pressure 14

   5. Control System 14

   6. Materials Class Rating 15

   7. External Hydrostatic Pressure 17

   8. Transportation and Installation Conditions 17

   9. Equipment Design 17

   10. Control Systems 18

6. Materials 22

   1. HIPPS Final Element Equipment 22

   2. HIPPS Control System and Final Element-mounted Control Devices 23

   3. Welding 24

   4. Coatings (External) 24

7. Quality Control 25

   1. General 25

   2. HIPPS Closure Devices—PSL 25

   3. Structural Components 27

   4. Lifting Devices 27

   5. Cathodic Protection 27

   6. Storing and Shipping 27

8. Equipment Marking 27

   1. General 27

   2. Pad Eyes and Lift Points 27

9. Validation 28

   1. General 28

   2. Validation for HIPPS Closure Devices (Isolation Valve) and Actuator 28

   3. Validation for Monitor/Bleed, Bypass, Injection Valves 29

   4. Validation for DCV 29

   5. Validation of Sensors, Logic Solvers, and Control System Devices 30

   6. Validation of HIPPS Final Element 31

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      Page

   7. Estimating SIL for HIPPS Final Element Components 31

10. Installation and Commissioning 32

    1. General 32

    2. Planning 32

    3. Installation 33

    4. Commissioning 34

Bibliography 38

Figures

1 Typical Subsea Production HIPPS Valve Diagram 6

Tables

1. SILs 8

2. Minimum HFT of Programmable Electronics (PE) Logic Solvers 16

3. Minimum HFT of Sensors and Final Elements and Non-PE Logic Solvers 16

4. Hardware Safety Integrity: Architectural Constraints on Type A Safety-related Subsystems 16

5. Hardware Safety Integrity: Architectural Constraints on Type B Safety-related Subsystems 16

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Recommended Practice for Subsea High Integrity Pressure Protection Systems (HIPPS)

1. Scope

   This recommended practice (RP) addresses the requirements for the use of high integrity pressure protection systems (HIPPS) for subsea applications. API 14C, IEC 61508, and IEC 61511 specify the requirements for onshore, topsides, and subsea safety instrumented systems (SIS’s) and are applicable to HIPPS, which are designed to autonomously isolate downstream facilities from overpressure situations. This document integrates these requirements to address the specific needs of subsea production. These requirements cover the HIPPS pressure sensors, logic solver, shutdown valves, and ancillary devices including testing, communications, and monitoring subsystems.

   
   

2. Normative References

The following referenced documents are indispensable for the application of this RP. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

API Specification 6A/ISO 10423, Specification for Wellhead and Christmas Tree Equipment

API Recommended Practice 6HT, Heat Treatment and Testing of Large Cross Section and Critical Section Components

API Recommended Practice 17A/ISO 13628-1, Design and Operation of Subsea Production Systems—General Requirements and Recommendations

API Recommended Practice 17C/ISO 13628-3, Recommended Practice on TFL (Through Flowline) Systems

API Specification 17D/ISO 13628-4, Subsea Wellhead and Christmas Tree Equipment

API Specification 17F/ISO 13628-6, Specification for Subsea Production Control Systems

API Recommended Practice 17H/ISO 13628-8, Recommended Practice for Remotely Operated Vehicle (ROV) Interfaces on Subsea Production Systems

NOTE ISO 13628-8 will be withdrawn and replaced by ISO 13628-13 when published. In this document, any reference to ISO 13628-8 should be replaced with ISO 13628-13 when published and available.

ANSI/ASME B31.3 1 2, Process Piping

ANSI/ASME B31.8, Gas Transmission and Distribution Piping Systems

AWS D1.1 3, Structural Welding Code—Steel

IEC 61508, Parts 1 to 4 4, Functional safety of electrical/electronic/programmable electronic safety-related systems

1. American National Standards Institute, 25 West 43rd Street, 4th Floor, New York, New York 10036, www.ansi.org.

2. ASME International, 3 Park Avenue, New York, New York 10016-5990, www.asme.org.

3. American Welding Society, 550 NW LeJeune Road, Miami, Florida 33126, www.aws.org.

4. International Electrotechnical Commission, 3, rue de Varembé, P.O. Box 131, CH-1211, Geneva 20, Switzerland, www.iec.ch.

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