Aramco材料系统规范32-SAMSS-008 2018燃气轮机进口空气过滤系统 Aramco Materials System Specification 32-SAMSS-008 2018 Inlet Air Filtration Systems for Combustion Gas Turbines

Previous Issue 1 January 2018 Next Planned Update 10 May 2021 Page 1 of 27 Primary contact Sabban, Mahmoud Abdulrahim on 966 13 880-9508 Saudi Aramco 2018. All rights reserved. Materials System Specification 32-SAMSS-008 10 May 2018 Inlet Air Filtration Systems for Combustion Gas Turbines Document Responsibility Gas Turbines and Diesel Engines Standards Committee Saudi Aramco DeskTop Standards Table of Contents 1 Scope............................................................. 2 2 Conflicts and Deviations................................. 2 3 References..................................................... 3 4 Design............................................................ 4 5 Pulse Air System Requirements..................... 9 6 System Perance Requirements............ 10 7 Electrical and Instrumentation...................... 11 8 Protective Coatings...................................... 16 9 Design Drawings.......................................... 16 10 Inspection..................................................... 16 11 Testing Requirements.................................. 16 12 Guarantee.................................................... 16 13 Export Packing, Marking and Shipping........ 17 Appendix I - Protective Coatings......................... 18 Appendix II - Filtration Testing Requirements .. 22 Document Responsibility Gas Turbines and Diesel Engines Standards Committee 32-SAMSS-008 Issue Date 10 May 2018 Next Planned Update 10 May 2021 Inlet Air Filtration Systems for Combustion Gas Turbines Saudi Aramco Company General Use Page 2 of 27 1 Scope 1.1 This Specification together with the Purchase Order covers the minimum mandatory design, perance and testing requirements for combustion gas turbines inlet air filtration systems. These environments could be subject to any combination of dry, high ambient dust, salt concentrations, fog and high humidity conditions. 1.2 The intent of the inlet air filtration system is to limit the ingestion of airborne contaminants such as sand, dust and alkali metal salts so as to prevent gas turbine compressor erosion, fouling, cooling air passage blocking and hot corrosion of the turbine section components. The system specified herein is intended for continuous duty, high efficiency air filtration. 1.3 Air filtration systems covered by this Specification are limited to the automatic pulse-jet self-cleaning type. The system may be a single stage comprising the pulse-clean element alone, or a two-stage system comprising the pulse-clean element with a second stage high barrier filter. Barrier style filters alone are not allowed. 1.4 Air filtration systems shall be supplied by qualified experienced Vendors who must have a Previously manufactured at least two systems of similar type and design. b Shown a satisfactorily system perance of at least three years of continuous fielded service. c Proven through testing that the proposed system meets the Type Test requirements outlined in paragraph 11 of this Specification. 1.5 Compliance with the provisions of this Specification does not relieve the Vendor from the responsibilities of furnishing equipment properly designed to meet the specified operating service conditions. 2 Conflicts and Deviations All requests to deviate from this Specification and any conflicts between this Specification and other applicable Saudi Aramco Materials System Specifications SAMSSs, Engineering Standards SAESs, Standard Drawings SASDs, industry standards, codes and s, shall be resolved in writing by the Company or Buyer and shall be addressed to Saudi Aramco EK Shop Applied for Inlet Filtration System Internal for CGT Air Filtration flame retardant PVC, XLPE or XLPO insulated; size 14 AWG minimum; have an insulation minimum temperature rating of 90C and shall comply with NFPA 70 or IEC 60502-1. 7.2.2 Instrumentation signal wiring shall be stranded copper; flame retardant PVC, XLPE or XLPO insulated. The minimum wire size shall be Document Responsibility Gas Turbines and Diesel Engines Standards Committee 32-SAMSS-008 Issue Date 10 May 2018 Next Planned Update 10 May 2021 Inlet Air Filtration Systems for Combustion Gas Turbines Saudi Aramco Company General Use Page 12 of 27 a 16 AWG single twisted pair/triad from instruments to the nearest skid mounted junction box. Cables carrying analog signals shall also be shielded. Smaller wire size may be accepted if substantiated by field experience and a written approval is obtained from the Chairman, Gas Turbines Diesel Engines Standards Committee, and Consulting Services Department. b 18 AWG for multi-twisted pair/triad cables from junction boxes to other junction boxes, marshalling cabinets, or control system. c 22 AWG for multi-conductor cable inter-cabinet wiring. 7.2.3 Pair/triads of multi-twisted pair/triad control cables shall be numbered. 7.2.4 Except for thermocouple wiring a Power and signal wiring shall be color coded as follows AC Supply DC Supply Signal Pair Signal Triad Phase Black Positive Red or red sleeve over any color except green Positive Black Positive Black Neutral White Negative Black or black sleeve over any color except green Negative White Negative White Ground Green or green with yellow trace - - Third Wire Red b Thermocouples shall be as per ANSI MC96.1. c Blue color insulation or jacket shall only be used for intrinsically safe installation. 7.2.5 Splices are not permitted in wiring. When wiring must be extended, connections shall be made via terminal blocks. 7.2.6 Wiring connections shall be made to channel rail mounted terminal blocks. These terminal blocks shall have tubular box clamp connector and compression bar or yoke for wire termination. More than two connections per terminal point are not allowed. Document Responsibility Gas Turbines and Diesel Engines Standards Committee 32-SAMSS-008 Issue Date 10 May 2018 Next Planned Update 10 May 2021 Inlet Air Filtration Systems for Combustion Gas Turbines Saudi Aramco Company General Use Page 13 of 27 7.2.7 Fused terminals shall be used for power distribution, alarm, and shutdown systems. 7.2.8 Double Block and bleed arrangement for each one of the instruments, grouped in the 2 out of 3 shutdown logic, shall be provided to enable maintenance while the unit is in operation 7.2.9 Different instruments signals shall be segregated from each other and from power wiring. 7.2.10 Cables may be routed utilizing one of two s 7.2.10.1 Instrument cables may be routed in conduits. The conduit installation shall be in accordance with NFPA 70. 7.2.10.2 Armored cables may be routed on trays. For this option, the following guidelines shall be followed a The armored cable shall be suitable for the area classification where the packaged unit is installed e.g., ITC, PLTC, MC, etc.. b The armored cables shall be routed on aluminum or stainless channel trays. Galvanized steel trays are not acceptable. c The cable armor shall be either steel wire armor or interlocked metallic armor. d The trays shall be elevated and shall not be mounted to the skid base plate unless protected by grating. e Tray ends are bent to avoid having sharp edges. f The glands at both ends of the armored cable shall be certified flameproof EExd gland. Where sealing is required by NFPA 70, the gland shall be certified EExd with a compound barrier seal e.g., CMP Protex 2000 - PX2K. 7.2.11 JB shall be 316 series SS and be IEC 60529 type IP66 or NEMA 250/NEMA ICS type 4X and shall meet the segregation requirements of paragraph 7.2.9. Document Responsibility Gas Turbines and Diesel Engines Standards Committee 32-SAMSS-008 Issue Date 10 May 2018 Next Planned Update 10 May 2021 Inlet Air Filtration Systems for Combustion Gas Turbines Saudi Aramco Company General Use Page 14 of 27 7.2.12 Instruments and JBs shall have permanently attached engraved phoenolic / laminate or plastic nameplates, showing tag numbers. Phoenolic nameplates shall be installed with two stainless steel screws. 7.2.13 All packaged unit wiring, intended for interface with plant wiring and/or control package, shall be terminated in junction boxes. 7.2.14 Interconnecting wires between skid mounted components, between skid mounted instruments and the skid termination panel, and between skid termination panels and control system panels shall be tagged. Each tag shall identify the device to which the opposite end of the wire is connected. Heat shrink or ferrule type wire tags with permanently embossed identification markings shall be used. 7.2.15 The alarm and shutdown contacts shall be wired fail safe, i.e., the alarm and shutdown contacts shall be closed during normal operation and shall open when the alarm or shutdown condition is reached. If relays are being used then fail-safe is “Deenergize to alarm and deenergize to shutdown shall be standard” i.e., the alarm and shutdown relays shall be normally energized. For shutdown systems, the initiating devices shall be independent, dedicated primary elements having their own individual process connections. 7.3 Instrument Piping and Tubing 7.3.1 The instrument piping and tubing installation shall ensure the reliable and accurate operation of the instruments involved, and allow sufficient access for maintenance, calibration and testing. It shall be possible to test all alarm and shutdown initiating devices, without interfering with the process operation of the packaged unit. 7.3.2 Instrument piping and tubing materials shall be selected to be acceptable for the expected working environment. 7.3.3 Instrument tubing shall be adequately supported to eliminate any vibration transmission to the instruments or excessive load to the piping connection. 7.3.4 Indicating differential pressure transmitters shall be provided across each filter stage and the overall stage. Each transmitter shall also be provided with isolation valves on the high and low connections in addition to the manifold valves. The transmitters shall be located side by side where they can be conveniently reached from plat or grade level. Document Responsibility Gas Turbines and Diesel Engines Standards Committee 32-SAMSS-008 Issue Date 10 May 2018 Next Planned Update 10 May 2021 Inlet Air Filtration Systems for Combustion Gas Turbines Saudi Aramco Company General Use Page 15 of 27 7.3.5 All threaded connections shall be tapered per ASME B1.20.1. 7.4 Where applicable, instrument connections shall be NPT female threaded and con to ASME B1.20.1. Pneumatic signal and supply connection sizes shall be inch or larger, NPT female. Electric signal connection sizes shall be at least inch NPT female for transmitters, indicators, and solenoid valves. 7.5 Instrument Piping and Tubing threaded fittings shall be forged carbon steel or stainless steel per ASME B16.11, and be Class 3000 for systems rated up to and including ANSI Class 900, and Class 6000 for systems rated ANSI Class 1500. 7.6 A watertight NEMA 4X permanent lighting system of adequate capacity shall be provided for inspection and maintenance. The system shall be suitable for 120 volt, single phase, 60 Hz in accordance with outdoors non-classified area standards. Wiring shall be in rigid conduit, conduit fittings and terminal boxes. Threaded lighting fixtures shall have NPT female threads. A permanent lighting system inside the clean air plenum is not required. 7.7 Electrical accessories and pressure transmitters shall be housed in weatherproof boxes per NEMA 4X in accordance with NEMA ICS 6 and NEMA 250 or IEC 60529 Type IP 65 with the exception of those in coastal areas corrosive environments which shall be in watertight boxes, per NEMA 4X or IEC 60529 Type IP 66. For hazardous areas, where specified in the Purchase Order, boxes shall also be explosion proof NEMA 7. Wiring shall be in rigid conduit, conduit fittings and terminal boxes. 7.8 Solid state electronic timer/sequencer devices shall be housed per paragraph 7.7 and be installed at a convenient location to avoid radiant and convected heat. 7.9 Control pressure transmitter shall be of the smart type. 7.10 The high differential pressure indicating transmitter shall be wired to give a high pressure alarms on the turbine panel and in the central control room for each stage. The lower set point shall provide an alarm annunciation and the high set point shall be wired to shut down the turbine. The alarm and shutdown set points shall not exceed the following a Single Stage System Alarm 1.00 kPa 4.0” W.G. Shutdown 1.75 kPa 7.0” W.G. Document Responsibility Gas Turbines and Diesel Engines Standards Committee 32-SAMSS-008 Issue Date 10 May 2018 Next Planned Update 10 May 2021 Inlet Air Filtration Systems for Combustion Gas Turbines Saudi Aramco Company General Use Page 16 of 27 b Two Stages System Pulse-Clean Barrier Overall System Alarm 1.0 kPa 4.0” W.G. 0.5000 kPa 2.0” W.G. 1.50 kPa 6.0” W.G. Shutdown 2.0 KPa 8.0” W.G. 7.11 All pneumatic instrumentation shall pass leakage test of all piping and tubing. 8 Protective Coatings 8.1 The exterior and interior of the filtration unit shall be coated in accordance with Appendix I. 8.2 The selected coating shall not contain vanadium, lead, mercury, zinc or any other heavy metals. 8.3 Non-ferrous metal and stainless steel surfaces do not require painting. 8.4 Welds, corners and edges shall be brush painted prior to application of the first spray coat to ensure adequate coverage in these areas. 9 Design Drawings The Vendor shall detailed structural, electrical, and instrumentation drawings that are proposed to be furnished, in accordance with this specification, through the Company or Buyer Representative for ination to the Chairman, Gas Turbines Diesel Engines Standards Committee, Consulting Services Department, prior to fabrication. 10 Inspection The filter system components are subject to inspection in accordance with the referenced 175-325503, 175-325508, and 175-325515. 11 Testing Requirements Results of the required tests identified in Appendix II and certified by a Principal Officer of the Vendor Company, must be ted with the bid proposal for uation purposes. Results of these tests shall serve to qualify the proposed filtration system as meeting the requirements and intent of the Specification. The type test results shall be Document Responsibility Gas Turbines and Diesel Engines Standards Committee 32-SAMSS-008 Issue Date 10 May 2018 Next Planned Update 10 May 2021 Inlet Air Filtration Systems for Combustion Gas Turbines Saudi Aramco Company General Use Page 17 of 27 subject to review and approval by the Chairman, Gas Turbines Diesel Engines Standards Committee, and Consulting Services Department. 12 Guarantee 12.1 The Vendor shall guarantee a minimum pulse-clean element life and perance per Section 6 of this spec