API RP 17X-2021 pdf free download

API RP 17X-2021 pdf free download.Recommended Practice for Subsea Pump Module Systems.
1 Scope This RP provides guidance for the design, manufacture, installation, and operation of subsea pumps, including rotary displacement and rotor dynamic types for single phase, and multi-phase services. The RP applies to all subsea pump modules placed at or above the mud line. API RP 17X describes subsea pump modules that are either directly designed or “marinized” for use in an ofshore/marine environment. Potential applications include: — Ofshore use near subsea wells to boost production and enhance oil recovery (EOR) from partially depleted oil felds, or: — To boost fowline pressures to fow at higher rates or greater distances or when fowing subsea wells up to a surface facility. The design of such system solutions requires additional equipment to power, control and otherwise operate the pumps. These are not within the scope of this document and can be found in API Std 17F, API Std 17G, API 17Z, and other relevant standards for these and associated equipment on the host facility or site. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies, except that new editions may be used on issue and shall become mandatory upon the efective date specifed by the publisher or six months from the date of the revision (where no efective date is specifed). API Specifcation 6A, Specifcation for Wellhead and Tree Equipment API Recommended Practice 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations API Specifcation 17D, Design and Operation of Subsea Production Systems—Subsea Wellhead and Tree Equipment, Second Edition, May 2011, Addendum 1, September 2015 API Standard 17F, Standard for Subsea Production Control Systems
4.2 General Design Requirements The general design requirements are as follows: a) Equipment, including all auxiliaries, shall be designed, and selected for subsea installation and the specifed site environmental conditions as specifed in the Pump Design Data Sheets (Annex A). b) Materials for the pump module internal components shall be compatible with the specifed production fuid, seawater, and chemicals in accordance with the Pump Design Data Sheets (Annex A). c) External materials shall be compatible with seawater and the cathodic protection system. d) External coatings and insulation shall be compatible with internal production fuids, chemicals, seawater, and the cathodic protection systems in accordance with the Pump Design Data Sheets (Annex A). e) The motor power rating (as a function of speed for ASD driven motors) shall include a margin of 10 % to the pump power for all specifed operating conditions. f) The motor shall have a maximum continuous speed of at least 105 % of the rated speed. g) The pump system shall be capable of starting from the specifed cold restart conditions. h) The pump system shall be capable of starting after a specifed long-term standstill. i) The pump system shall be capable of operating within the entire operating region for single-phase or operating envelope for multi-phase, at all specifed operating conditions. j) The pump system shall tolerate transient conditions during start-up, shutdown, emergency shut down and power failure. k) For single-phase fow, the calculated preferred operating region shall be identifed in accordance with API Std 610. For multi-phase fow, the preferred operating envelope shall be described in the Pump Design Data Sheets (Annex A).
m) The required design life of the equipment shall be as specifed in the datasheets in Annex A. n) Performance objectives and/or requirements (such as technical availability or reliability) shall be stated in the datasheets in Annex A. The pump system shall be designed and manufactured to meet the specifed performance objectives (e.g. availability, reliability). o) Erosion and abrasion analyses within the pump should be performed using validated functions to describe particle behavior. NOTE Currently, CFD based methods provide the most appropriate basis for the analysis. p) Multi-phase pump systems shall tolerate or mitigate occasional upset operation at 100 % GVFi at the pump inlet. NOTE 1 Unstable fow regimes, gas-flled well start-up conditions or gas-flled pump conditions are to be expected. NOTE 2 Mechanical seals can experience signifcant temperature and pressure deviations when operating near 100 % GVFi. q) The design processes shall conform to the requirements of API RP Q1. r) The safety system shall conform to the requirements of API RP 17V. s) A recycle control system shall be designed for use during startup and to protect the pump against unstable fow regimes. NOTE The recycle line is often designed to have a continuous fow as a method to prevent hydrate formation and other solids accumulation in the line.