152 requirements · 48 checked by deterministic rules, the others by discipline agents · 25 documents in the document register. Synthetic, modelled on the kind of design basis, specifications and procedures a CO2 transport project uses; standards are cited by number only.
| ID | Requirement | Source | Applies to | Priority | Check |
|---|---|---|---|---|---|
| NCT-R-DCC-001 | Document number format Every project document shall carry a document number of the form NCT-<discipline>-<type>-<nnnn>, where discipline is a three-letter code and type a two- or three-letter code. | NCT-DCC-PR-0004 Rev A §3.1 | DS, SP, PID, LL, IL, CA, PR, DW, ITP | Medium | docnumber_format |
| NCT-R-DCC-002 | Valid revision code Revisions shall be identified by a single capital letter (A, B, C ...) before 'Issued for Construction' and by a number (0, 1, 2 ...) from 'Issued for Construction' onwards. Combined codes such as 'C1' are not allowed. | NCT-DCC-PR-0004 Rev A §3.4 | DS, SP, PID, LL, IL, CA, PR, DW, ITP | Low | revision_format |
| NCT-R-DCC-003 | References to current revisions Where a document references another project document by revision, the referenced revision shall be the current revision in the document register; references to superseded revisions are not allowed. | NCT-DCC-PR-0004 Rev A §4.2 | DS, SP, PID, LL, IL, CA, PR, DW, ITP | Medium | refs_current |
| NCT-R-DCC-004 | Referenced documents exist Every project document number referenced in a document shall exist in the project document register. | NCT-DCC-PR-0004 Rev A §4.3 | DS, SP, PID, LL, IL, CA, PR, DW, ITP | Low | refs_exist |
| NCT-R-DCC-005 | SI units Values shall be stated in SI units (bar(g), degC, mm, m, kg). Imperial units (psi, degF, ft, lb) are not allowed, except nominal pipe sizes in inches. | NCT-DCC-PR-0004 Rev A §5.1 | DS, SP, PID, LL, IL, CA, PR, DW, ITP | Low | si_units |
| NCT-R-DCC-006 | Document language Documents shall be written in English. Procedures executed by Dutch site personnel may be written in Dutch. | NCT-DCC-PR-0004 Rev A §5.3 | SP, PR, CA, ITP | Low | agent |
| NCT-R-DCC-007 | Revision history Each document shall contain a revision history stating revision, date, description and author. | NCT-DCC-PR-0004 Rev A §6.1 | SP, PR, CA, ITP | Low | section_required |
| NCT-R-DCC-008 | Title block complete Every drawing shall have a title block with project, document number, title, revision, date, status, drawn, checked, approved, scale and sheet filled in. | NCT-DCC-SP-0005 Rev A §2.2 | PID, DW | Medium | titleblock_complete |
| NCT-R-DCC-009 | Status code on drawings The status in the title block shall be one of IFR (issued for review), IFA (issued for approval) or IFC (issued for construction). | NCT-DCC-SP-0005 Rev A §2.4 | PID, DW | Low | titleblock_value |
| NCT-R-DCC-010 | CAD layer standard CAD drawings shall use the project layer names (e.g. PROCESS, INSTR, VALVES, TEXT, TITLEBLOCK, DIMENSIONS); layer 0 shall not carry content. | NCT-DCC-SP-0005 Rev A §3.1 | PID, DW | Low | layers_standard |
| NCT-R-DCC-011 | Page numbering Pages shall be numbered 'Page x of y' (or 'Pagina x van y'). | NCT-DCC-PR-0004 Rev A §5.4 | SP, PR, CA, ITP | Low | agent |
| NCT-R-DCC-012 | Document status stated The issue purpose (IFR, IFA, IFC) shall be stated on the cover page or title block. | NCT-DCC-PR-0004 Rev A §6.3 | DS, SP, PID, LL, IL, CA, PR, DW, ITP | Low | agent |
| NCT-R-DCC-013 | Hold list Open items in a document shall be listed in a hold list with the action owner; 'TBD' without a hold is not allowed. | NCT-DCC-PR-0004 Rev A §7.1 | SP, PR | Low | agent |
| NCT-R-DCC-014 | Reference list Each specification, calculation, procedure and ITP shall contain a list of referenced documents and standards. | NCT-DCC-PR-0004 Rev A §7.2 | SP, CA, PR, ITP | Low | section_required |
| NCT-R-PRC-001 | Design pressure The design pressure of the compressor discharge system and the trunkline is 150 barg. Documents shall use this value. | NCT-PRC-DB-0001 Rev D §4.1 | DS, SP, PID, LL, CA, PR | High | field_eq |
| NCT-R-PRC-002 | Maximum allowable operating pressure The maximum allowable operating pressure (MAOP) is 140 barg. | NCT-PRC-DB-0001 Rev D §4.1 | DS, SP, LL, CA | Medium | field_eq |
| NCT-R-PRC-003 | Minimum design temperature (general) The minimum design temperature is -20 degC for buried and above-ground process piping. | NCT-PRC-DB-0001 Rev D §4.2 | DS, SP, LL, CA | High | agent |
| NCT-R-PRC-004 | Minimum design temperature for depressurisation Vent, blowdown and relief lines and all valves that can see depressurisation of dense-phase CO2 shall be designed for a minimum design temperature of -46 degC. | NCT-PRC-DB-0001 Rev D §4.2 | SP, LL | High | table_rule |
| NCT-R-PRC-005 | Maximum design temperature The maximum design temperature is 50 degC downstream of the after-cooler. | NCT-PRC-DB-0001 Rev D §4.2 | DS, SP, LL, CA | Medium | agent |
| NCT-R-PRC-006 | CO2 specification - purity Equipment shall be suitable for CO2 with a purity of at least 95 mol%. | NCT-PRC-DB-0001 Rev D §3.2 | SP, CA, PR | Medium | agent |
| NCT-R-PRC-007 | CO2 specification - water content The design shall assume a maximum water content of 50 ppmv in the transported CO2; free water shall never be present in operation. | NCT-PRC-DB-0001 Rev D §3.3 | SP, CA, PR | High | agent |
| NCT-R-PRC-008 | CO2 specification - impurities Materials shall be compatible with the impurity limits of the design basis (O2 <= 10 ppmv, H2S <= 5 ppmv, SOx and NOx <= 10 ppmv each). | NCT-PRC-DB-0001 Rev D §3.3 | SP | Medium | agent |
| NCT-R-PRC-009 | Overpressure protection Every section that can be blocked in shall be protected against overpressure by a relief device or an instrumented protection system. | NCT-PRC-DB-0001 Rev D §4.4 | PID | Medium | agent |
| NCT-R-PRC-010 | Dense-phase operation The trunkline is operated in dense phase; the operating envelope shall stay above 80 barg in normal operation. | NCT-PRC-DB-0001 Rev D §4.5 | PID, SP | Medium | agent |
| NCT-R-PRC-011 | Pig launcher The compressor discharge shall include a pig launcher suitable for intelligent pigging of the trunkline. | NCT-PRC-DB-0001 Rev D §5.1 | PID | Medium | agent |
| NCT-R-PRC-012 | Piggability All valves in the trunkline shall be full bore to allow pigging. | NCT-PRC-DB-0001 Rev D §5.2 | PID, SP | Medium | agent |
| NCT-R-PRC-013 | Emergency shutdown valves Emergency shutdown valves (XV) shall be provided at the compressor discharge and at the landfall valve station. | NCT-PRC-DB-0001 Rev D §5.3 | PID | High | agent |
| NCT-R-PRC-014 | Blowdown Each isolatable section shall have a blowdown valve routed to the vent stack. | NCT-PRC-DB-0001 Rev D §5.4 | PID | Medium | agent |
| NCT-R-PRC-015 | Design pressure on P&ID notes Design conditions stated on P&IDs shall match the design basis (150 barg / -46 to +50 degC for the discharge and trunkline). | NCT-PRC-DB-0001 Rev D §4.1 | PID | High | field_eq |
| NCT-R-PRC-016 | Insulation for personnel protection Surfaces hotter than 60 degC or colder than -10 degC within reach shall have personnel protection. | NCT-PRC-DB-0001 Rev D §4.6 | PID, LL | Low | agent |
| NCT-R-PRC-017 | Design life The design life of the transport system is 30 years. | NCT-PRC-DB-0001 Rev D §6.1 | CA | Medium | agent |
| NCT-R-PRC-018 | Ambient conditions Outdoor equipment shall be designed for ambient temperatures from -20 degC to +35 degC and a coastal (C5-M) atmosphere. | NCT-PRC-DB-0001 Rev D §6.2 | SP, DS | Low | agent |
| NCT-R-PRC-019 | Line numbering on P&IDs Every process line on a P&ID shall carry a line number of the form <size>"-<fluid>-<nnnn>-<piping class>. | NCT-PRC-DB-0001 Rev D §4.7 | PID | Medium | pattern_all |
| NCT-R-PRC-020 | Line list consistency Every line number shown on a P&ID shall appear in the line list. | NCT-PRC-DB-0001 Rev D §4.7 | PID | Medium | lines_in_linelist |
| NCT-R-PRC-021 | Line list design pressure In the line list, all CO2 lines in the discharge and trunkline system shall have a design pressure of 150 barg. | NCT-PRC-DB-0001 Rev D §4.8 | LL | Medium | table_rule |
| NCT-R-PRC-022 | Line list test pressure The line list shall state a hydrotest pressure of at least 1.5 times the design pressure for every CO2 line. | NCT-PRC-DB-0001 Rev D §4.8 | LL | Low | table_rule |
| NCT-R-PRC-023 | Specification breaks Piping class breaks shall be shown on the P&ID. | NCT-PRC-DB-0001 Rev D §4.9 | PID | Low | agent |
| NCT-R-PRC-024 | Cold-temperature embrittlement Measures against brittle fracture during depressurisation shall be described for all components that can reach -46 degC. | NCT-PRC-DB-0001 Rev D §7.1 | SP, PR | Medium | agent |
| NCT-R-PRC-025 | Running ductile fracture The line pipe design shall address running ductile fracture arrest for dense-phase CO2. | NCT-PRC-DB-0001 Rev D §7.2 | CA | Medium | agent |
| NCT-R-PIP-001 | Allowed line pipe grades Line pipe shall be ISO 3183 PSL2 grade L415ME or L450ME. Other grades require an approved deviation. | NCT-PIP-SP-0003 Rev B §3.1 | CA, SP, DS | Medium | field_allowed |
| NCT-R-PIP-002 | Corrosion allowance A corrosion allowance of 3.0 mm shall be applied to all carbon-steel piping and line pipe in CO2 service. | NCT-PIP-SP-0003 Rev B §3.2 | CA, LL, SP | High | field_min |
| NCT-R-PIP-003 | Design factor The design factor for line pipe shall not exceed 0.72. | NCT-PIP-SP-0003 Rev B §3.3 | CA | High | field_max |
| NCT-R-PIP-004 | Wall thickness formula Wall thickness shall be calculated with the hoop-stress (Barlow) formula t = P*D/(2*SMYS*F) plus corrosion allowance and fabrication tolerance. | NCT-PIP-SP-0003 Rev B §3.4 | CA | Medium | agent |
| NCT-R-PIP-005 | Fabrication tolerance A negative wall thickness fabrication tolerance of 12.5% shall be considered unless the mill guarantees less. | NCT-PIP-SP-0003 Rev B §3.5 | CA | Medium | agent |
| NCT-R-PIP-006 | Calculation inputs traceable All calculation inputs shall be traceable to a referenced project document and revision. | NCT-PIP-SP-0003 Rev B §3.6 | CA | Low | agent |
| NCT-R-PIP-007 | Piping class for 150 barg CO2 lines with 150 barg design pressure shall use piping class B9C (ASME Class 900, carbon steel low-temperature). | NCT-PIP-SP-0003 Rev B §4.1 | LL, PID | Medium | table_rule |
| NCT-R-PIP-008 | Piping class for vent lines Vent and blowdown lines shall use low-temperature piping class L9C. | NCT-PIP-SP-0003 Rev B §4.1 | LL | Medium | table_rule |
| NCT-R-PIP-009 | Insulation code Every line in the line list shall carry an insulation code (N = none, PP = personnel protection, H = heat conservation). | NCT-PIP-SP-0003 Rev B §4.3 | LL | Low | table_rule |
| NCT-R-PIP-010 | Girth weld NDT extent 100% of the girth welds of the trunkline shall be examined by automated ultrasonic testing (AUT) or radiography. | NCT-PIP-SP-0003 Rev B §5.1 | ITP, PR | High | field_min |
| NCT-R-PIP-011 | Positive material identification PMI shall be performed on all alloy materials and on 10% of low-temperature carbon-steel components. | NCT-PIP-SP-0003 Rev B §5.2 | ITP | Medium | agent |
| NCT-R-PIP-012 | Coating holiday detection External coating shall be 100% holiday tested before lowering-in. | NCT-PIP-SP-0003 Rev B §5.3 | ITP | Medium | agent |
| NCT-R-PIP-013 | Welding procedure qualification Welding procedures shall be qualified including Charpy impact testing at -46 degC. | NCT-PIP-SP-0003 Rev B §5.4 | ITP, PR | Medium | agent |
| NCT-R-PIP-014 | Minimum wall thickness The selected nominal wall thickness of the 32-inch trunkline shall not be less than 15.9 mm. | NCT-PIP-SP-0003 Rev B §6.1 | CA | Medium | field_min |
| NCT-R-PIP-015 | Outside diameter The outside diameter of the 32-inch trunkline is 813 mm. | NCT-PIP-SP-0003 Rev B §6.2 | CA | Low | field_eq |
| NCT-R-PIP-016 | Cathodic protection Buried line pipe shall be protected by external coating and impressed-current cathodic protection. | NCT-PIP-SP-0003 Rev B §6.3 | CA | Medium | agent |
| NCT-R-PIP-017 | Toughness requirements Line pipe shall meet Charpy toughness requirements for fracture arrest as defined in the line pipe specification. | NCT-PIP-SP-0003 Rev B §6.4 | CA, SP | Low | agent |
| NCT-R-PIP-018 | Line list completeness The line list shall state for every line: size, fluid, from, to, piping class, design pressure, minimum and maximum design temperature, corrosion allowance, insulation and test pressure. | NCT-PIP-SP-0003 Rev B §7.1 | LL | Low | agent |
| NCT-R-PIP-019 | Line reference to P&ID Every line in the line list shall reference the P&ID on which it is shown. | NCT-PIP-SP-0003 Rev B §7.2 | LL, PID | Low | agent |
| NCT-R-PIP-020 | Corrosion allowance in line list The line list shall show a corrosion allowance of 3.0 mm for every carbon-steel CO2 line. | NCT-PIP-SP-0003 Rev B §3.2 | LL | High | table_rule |
| NCT-R-VLV-001 | Body material for low-temperature service Valve bodies exposed to -46 degC shall be ASTM A350 LF2 Class 1 (forged) or ASTM A352 LCC (cast). ASTM A105 and A216 WCB are not allowed. | NCT-MEC-SP-0007 Rev B §4.1 | SP, DS | High | field_allowed |
| NCT-R-VLV-002 | Elastomers resistant to rapid gas decompression Elastomeric seals in CO2 service shall be qualified for rapid gas decompression (RGD) according to ISO 23936-2 or NORSOK M-710; standard nitrile (NBR) is not allowed. | NCT-MEC-SP-0007 Rev B §4.2 | SP, DS | High | agent |
| NCT-R-VLV-003 | Fire-safe design Trunkline ball valves shall be fire-safe certified to ISO 10497 or API 607. The specification shall contain a fire-safe section. | NCT-MEC-SP-0007 Rev B §4.3 | SP | Medium | section_required |
| NCT-R-VLV-004 | Fugitive emission class Valves shall meet ISO 15848-1 tightness class B (or better, class A). | NCT-MEC-SP-0007 Rev B §4.4 | SP | Medium | field_allowed |
| NCT-R-VLV-005 | Pressure class Valves in the 150 barg system shall be ASME B16.34 / B16.5 Class 900. | NCT-MEC-SP-0007 Rev B §4.5 | SP, PID, DS | High | field_allowed |
| NCT-R-VLV-006 | Full bore Trunkline valves shall be full bore and piggable. | NCT-MEC-SP-0007 Rev B §4.6 | SP | Medium | agent |
| NCT-R-VLV-007 | Double block and bleed Trunkline ball valves shall provide double block and bleed (DBB) functionality. | NCT-MEC-SP-0007 Rev B §4.7 | SP | Medium | agent |
| NCT-R-VLV-008 | Seat material Seats shall be metal or PEEK; PTFE seats are not allowed in CO2 service above 100 barg. | NCT-MEC-SP-0007 Rev B §4.8 | SP | Medium | agent |
| NCT-R-VLV-009 | Shell and seat test Each valve shall be shell tested at 1.5 times and seat tested at 1.1 times the rated pressure, plus a low-pressure gas seat test. | NCT-MEC-SP-0007 Rev B §5.1 | SP | Medium | agent |
| NCT-R-VLV-010 | Low-temperature test One valve per size and class shall be cryogenically tested at -46 degC with seat leakage measurement. | NCT-MEC-SP-0007 Rev B §5.2 | SP | Medium | agent |
| NCT-R-VLV-011 | Actuator fail-safe position Shutdown valve actuators shall be spring-return, fail-closed. | NCT-MEC-SP-0007 Rev B §6.1 | SP | Medium | agent |
| NCT-R-VLV-012 | Actuator sizing margin Actuators shall be sized with a safety factor of at least 1.5 on the maximum valve torque. | NCT-MEC-SP-0007 Rev B §6.2 | SP | Low | agent |
| NCT-R-VLV-013 | Stroke time Shutdown valves shall close within 30 seconds. | NCT-MEC-SP-0007 Rev B §6.3 | SP | Medium | agent |
| NCT-R-VLV-014 | External coating Above-ground valves shall be coated for a C5-M environment per ISO 12944. | NCT-MEC-SP-0007 Rev B §7.1 | SP | Low | agent |
| NCT-R-VLV-015 | Marking Valves shall be marked with tag number, size, class, body material and flow direction where applicable. | NCT-MEC-SP-0007 Rev B §7.2 | SP | Low | agent |
| NCT-R-VLV-016 | Material certificates Pressure-retaining parts shall have EN 10204 type 3.1 material certificates. | NCT-MEC-SP-0007 Rev B §8.1 | SP | Medium | agent |
| NCT-R-VLV-017 | Vendor documentation The vendor shall supply general arrangement drawings, a cross-section with parts list, test certificates and an installation and maintenance manual. | NCT-MEC-SP-0007 Rev B §8.2 | SP | Low | agent |
| NCT-R-VLV-018 | Stem design Valve stems shall be anti-blow-out design. | NCT-MEC-SP-0007 Rev B §4.9 | SP | Medium | agent |
| NCT-R-VLV-019 | Bolting Bolting for low-temperature valves shall be ASTM A320 L7 with A194 grade 7 nuts. | NCT-MEC-SP-0007 Rev B §4.10 | SP | Low | agent |
| NCT-R-VLV-020 | Design temperature of valves Valves shall be designed for -46 degC to +50 degC. | NCT-MEC-SP-0007 Rev B §4.11 | SP, DS | Medium | agent |
| NCT-R-VLV-021 | Cavity relief Ball valves shall have automatic body cavity relief. | NCT-MEC-SP-0007 Rev B §4.12 | SP | Medium | agent |
| NCT-R-VLV-022 | Spare parts The vendor shall propose commissioning spares and two years of operating spares. | NCT-MEC-SP-0007 Rev B §9.1 | SP | Low | agent |
| NCT-R-INS-001 | Calibrated range covers design pressure Pressure transmitters on the 150 barg system shall have a calibrated range whose upper value is at least 1.1 times the design pressure (165 barg). | NCT-INS-SP-0002 Rev 1 §3.1 | DS, IL | High | range_upper_min |
| NCT-R-INS-002 | Ingress protection Field instruments shall have ingress protection of at least IP66. | NCT-INS-SP-0002 Rev 1 §3.2 | DS | Medium | field_min |
| NCT-R-INS-003 | Hazardous-area certification Instruments in the compressor area shall be certified for Zone 1, gas group IIB, temperature class T4 (Ex d or Ex ia). | NCT-INS-SP-0002 Rev 1 §3.3 | DS, IL | High | field_allowed |
| NCT-R-INS-004 | Output signal Transmitters shall have a 4-20 mA output with HART. | NCT-INS-SP-0002 Rev 1 §3.4 | DS, IL | Medium | agent |
| NCT-R-INS-005 | Wetted materials Wetted parts of pressure instruments shall be AISI 316L as a minimum. | NCT-INS-SP-0002 Rev 1 §3.5 | DS | Medium | agent |
| NCT-R-INS-006 | Accuracy Pressure transmitter reference accuracy shall be 0.075% of span or better. | NCT-INS-SP-0002 Rev 1 §3.6 | DS | Low | agent |
| NCT-R-INS-007 | Process connection Process connection shall be 1/2-inch NPT female via a double block and bleed manifold. | NCT-INS-SP-0002 Rev 1 §3.7 | DS | Low | agent |
| NCT-R-INS-008 | Electrical connection Electrical connection shall be M20 x 1.5. | NCT-INS-SP-0002 Rev 1 §3.8 | DS | Low | agent |
| NCT-R-INS-009 | Instrument tag format Instrument and valve tags shall have the form <unit>-<function>-<nnnn>, e.g. 110-PT-1011 (three-digit unit, two- to four-letter function, four-digit loop number). | NCT-INS-SP-0002 Rev 1 §4.1 | PID, IL, DS | Medium | pattern_all |
| NCT-R-INS-010 | P&ID instruments in instrument index Every instrument tag shown on a P&ID shall appear in the instrument index. | NCT-INS-SP-0002 Rev 1 §4.2 | PID | Medium | tags_in_index |
| NCT-R-INS-011 | Unique tags Each tag shall appear only once in the instrument index. | NCT-INS-SP-0002 Rev 1 §4.3 | IL | Low | no_duplicates |
| NCT-R-INS-012 | P&ID reference in index Every instrument in the index shall reference an existing P&ID. | NCT-INS-SP-0002 Rev 1 §4.4 | IL | Low | table_refs_exist |
| NCT-R-INS-013 | Datasheet tags in index Every tag on an instrument datasheet shall appear in the instrument index. | NCT-INS-SP-0002 Rev 1 §4.5 | DS | Low | tags_in_index |
| NCT-R-INS-014 | Calibration certificate Each transmitter shall be delivered with a factory calibration certificate traceable to national standards. | NCT-INS-SP-0002 Rev 1 §5.1 | DS | Medium | agent |
| NCT-R-INS-015 | Display Transmitters shall have a local LCD display in engineering units. | NCT-INS-SP-0002 Rev 1 §5.2 | DS | Low | agent |
| NCT-R-INS-016 | Housing material Housings shall be stainless steel or copper-free aluminium with a C5-M coating. | NCT-INS-SP-0002 Rev 1 §5.3 | DS | Low | agent |
| NCT-R-INS-017 | Overpressure limit The sensor overpressure limit shall be at least 1.5 times the design pressure. | NCT-INS-SP-0002 Rev 1 §5.4 | DS | Low | agent |
| NCT-R-INS-018 | Diagnostics Transmitters in SIS service shall have diagnostic coverage reported in the SIL certificate. | NCT-INS-SP-0002 Rev 1 §5.5 | DS | Medium | agent |
| NCT-R-INS-019 | Index completeness The instrument index shall state for every tag: service, type, range, signal, SIL, P&ID and hazardous-area certification. | NCT-INS-SP-0002 Rev 1 §6.1 | IL | Low | agent |
| NCT-R-INS-020 | Instrument line symbols Instrument signal lines shall follow ISA 5.1 symbols. | NCT-INS-SP-0002 Rev 1 §6.2 | PID | Low | agent |
| NCT-R-INS-021 | Pressure measurement redundancy SIS pressure measurements shall be 2oo3 voted transmitters. | NCT-INS-SP-0002 Rev 1 §6.3 | PID | Medium | agent |
| NCT-R-INS-022 | Manufacturer and model stated The datasheet shall state manufacturer and model number for each instrument. | NCT-INS-SP-0002 Rev 1 §6.4 | DS | Low | agent |
| NCT-R-INS-023 | Damping Transmitter damping shall be adjustable from 0 to 60 seconds. | NCT-INS-SP-0002 Rev 1 §6.5 | DS | Low | agent |
| NCT-R-SIS-001 | SIL capability for SIS transmitters Transmitters in safety-instrumented functions shall be certified SIL 2 capable (IEC 61508) as a minimum. | NCT-INS-SP-0011 Rev A §3.1 | DS, IL | High | sil_min |
| NCT-R-SIS-002 | Proof test interval The datasheet shall state the proof test interval assumed in the SIL certificate (12 months maximum). | NCT-INS-SP-0011 Rev A §3.2 | DS | Medium | agent |
| NCT-R-SIS-003 | SIS tagging on P&ID Safety-instrumented loops shall be identified on the P&ID with the SIF number. | NCT-INS-SP-0011 Rev A §3.3 | PID | Medium | agent |
| NCT-R-SIS-004 | Shutdown valve SIL Shutdown valves in safety functions shall have a SIL 2 capability certificate for the valve and actuator assembly. | NCT-INS-SP-0011 Rev A §3.4 | SP | Medium | agent |
| NCT-R-SIS-005 | Partial stroke testing Shutdown valves shall support partial stroke testing. | NCT-INS-SP-0011 Rev A §3.5 | SP | Medium | agent |
| NCT-R-AFP-001 | Testdruk / test pressure The strength test pressure shall be at least 1.5 times the design pressure (225 barg). | NCT-MEC-SP-0009 Rev A §2.1 | PR | High | field_min |
| NCT-R-AFP-002 | Houdtijd / hold time The hold time of the combined strength and leak test shall be at least 24 hours. | NCT-MEC-SP-0009 Rev A §2.2 | PR | High | field_min |
| NCT-R-AFP-003 | Testmedium / test medium The test medium shall be filtered fresh water (filter 50 micrometre or finer) with a corrosion inhibitor; seawater is not allowed. | NCT-MEC-SP-0009 Rev A §2.3 | PR | High | agent |
| NCT-R-AFP-004 | Drogen / drying After dewatering, the line shall be dried to a water dew point of -40 degC or lower at atmospheric pressure before CO2 is introduced. The procedure shall contain a drying section. | NCT-MEC-SP-0009 Rev A §3.1 | PR | High | section_required |
| NCT-R-AFP-005 | Dauwpuntmeting / dew point measurement The dew point shall be measured at the far end of the section with a calibrated hygrometer and recorded. | NCT-MEC-SP-0009 Rev A §3.2 | PR | Medium | agent |
| NCT-R-AFP-006 | Kalibratie drukschrijver / recorder calibration Pressure and temperature recorders and dead-weight testers shall have been calibrated within the last 6 months. | NCT-MEC-SP-0009 Rev A §4.1 | PR | Medium | field_max |
| NCT-R-AFP-007 | Temperatuurmeting / temperature recording Pipe wall and ambient temperature shall be recorded continuously during the hold period. | NCT-MEC-SP-0009 Rev A §4.2 | PR | Medium | agent |
| NCT-R-AFP-008 | Acceptatiecriterium / acceptance criterion The test is accepted when pressure variations are fully explained by temperature effects and no leaks are found. | NCT-MEC-SP-0009 Rev A §4.3 | PR | Medium | agent |
| NCT-R-AFP-009 | Veiligheidszone / safety zone A safety zone shall be established and marked around the test section during pressurisation. | NCT-MEC-SP-0009 Rev A §4.4 | PR | Medium | agent |
| NCT-R-AFP-010 | Opdruksnelheid / pressurisation rate The pressurisation rate above 50% of the test pressure shall not exceed 1 bar per minute. | NCT-MEC-SP-0009 Rev A §4.5 | PR | Low | agent |
| NCT-R-AFP-011 | Afvoer testwater / test water disposal Test water shall be disposed of under a permit; inhibitor concentration shall be recorded. | NCT-MEC-SP-0009 Rev A §5.1 | PR | Medium | agent |
| NCT-R-AFP-012 | Testrapport / test report The test report shall contain the recorder charts, calibration certificates, test log and signatures of contractor and owner. | NCT-MEC-SP-0009 Rev A §5.2 | PR | Medium | agent |
| NCT-R-AFP-013 | Getuige opdrachtgever / owner witness The strength and leak test is a hold point witnessed by the owner's inspector. | NCT-MEC-SP-0009 Rev A §5.3 | PR, ITP | High | agent |
| NCT-R-AFP-014 | Ontluchten / venting The section shall be vented at high points to remove air before pressurisation. | NCT-MEC-SP-0009 Rev A §2.4 | PR | Medium | agent |
| NCT-R-AFP-015 | Testsecties / test sections Test section limits shall be defined with their elevation profile so that the test pressure at the highest point is not below the minimum. | NCT-MEC-SP-0009 Rev A §2.5 | PR | Medium | agent |
| NCT-R-AFP-016 | Ontwateren met pigs / dewatering by pigs Dewatering shall be done with at least two foam or bi-directional pigs driven by dry air or nitrogen. | NCT-MEC-SP-0009 Rev A §3.3 | PR | Medium | agent |
| NCT-R-HSE-001 | Vent stack distance to site boundary The vent stack shall be at least 60 m from the site boundary. | NCT-HSE-SP-0006 Rev A §3.1 | DW | High | dimension_min |
| NCT-R-HSE-002 | Control room separation The control room shall be at least 30 m from the compressor building. | NCT-HSE-SP-0006 Rev A §3.2 | DW | Medium | dimension_min |
| NCT-R-HSE-003 | Two escape routes Each building and process area shall have at least two escape routes in different directions. | NCT-HSE-SP-0006 Rev A §3.3 | DW | Medium | agent |
| NCT-R-HSE-004 | CO2 gas detection Fixed CO2 gas detection shall be provided in the compressor building and at low points where CO2 can accumulate. | NCT-HSE-SP-0006 Rev A §3.4 | DW, PID | Medium | agent |
| NCT-R-HSE-005 | Wind direction indicators At least two wind socks shall be visible from all process areas. | NCT-HSE-SP-0006 Rev A §3.5 | DW | Low | agent |
| NCT-R-HSE-006 | Assembly points Primary and secondary assembly points shall be shown on the plot plan, upwind of the vent stack for the prevailing wind. | NCT-HSE-SP-0006 Rev A §3.6 | DW | Medium | agent |
| NCT-R-HSE-007 | North arrow and prevailing wind Plot plans shall show a north arrow and the prevailing wind direction. | NCT-HSE-SP-0006 Rev A §3.7 | DW | Low | agent |
| NCT-R-HSE-008 | Emergency vehicle access Emergency vehicles shall have access to every process area from two sides. | NCT-HSE-SP-0006 Rev A §3.8 | DW | Medium | agent |
| NCT-R-HSE-009 | Asphyxiation hazard Procedures and specifications for CO2 systems shall address the asphyxiation hazard of CO2 releases. | NCT-HSE-SP-0006 Rev A §4.1 | SP, PR | Medium | agent |
| NCT-R-HSE-010 | Toolbox meeting Site procedures shall require a toolbox meeting before high-pressure work. | NCT-HSE-SP-0006 Rev A §4.2 | PR | Low | agent |
| NCT-R-HSE-011 | Vent stack height The vent stack shall be at least 30 m high (exit above grade). | NCT-HSE-SP-0006 Rev A §3.9 | DW | Medium | agent |
| NCT-R-HSE-012 | Fence and gates The site shall be fenced with at least two gates. | NCT-HSE-SP-0006 Rev A §3.10 | DW | Low | agent |
| NCT-R-CIV-001 | Drawing scale stated Plot plans shall be drawn to a stated scale (e.g. 1:500 or 1:1000); 'NTS' is not allowed for layouts. | NCT-HSE-SP-0006 Rev A §5.1 | DW | Low | titleblock_value |
| NCT-R-CIV-002 | Dimensions in metres Layout dimensions shall be in metres and the unit shall be stated on the drawing. | NCT-HSE-SP-0006 Rev A §5.2 | DW | Low | agent |
| NCT-R-CIV-003 | Site roads An access road shall run along the site with connection to the public road. | NCT-HSE-SP-0006 Rev A §5.3 | DW | Medium | agent |
| NCT-R-CIV-004 | Substation location The electrical substation shall be located outside hazardous areas. | NCT-HSE-SP-0006 Rev A §5.4 | DW | Low | agent |
| NCT-R-CIV-005 | Vent stack routing Blowdown and vent lines shall be routed to the vent stack shown on the plot plan. | NCT-HSE-SP-0006 Rev A §5.5 | DW, PID | Medium | agent |
| NCT-R-QAC-001 | Owner hold point for pressure test The pressure test of the pipeline shall be an owner hold point (H) in the ITP. | NCT-QAC-SP-0008 Rev A §3.1 | ITP | High | agent |
| NCT-R-QAC-002 | ITP references procedures Every ITP activity shall reference the governing procedure or specification by number. | NCT-QAC-SP-0008 Rev A §3.2 | ITP | Medium | agent |
| NCT-R-QAC-003 | Acceptance criteria Every ITP activity shall state its acceptance criteria. | NCT-QAC-SP-0008 Rev A §3.3 | ITP | Medium | agent |
| NCT-R-QAC-004 | Records Every ITP activity shall state the verifying record (certificate, report or checklist). | NCT-QAC-SP-0008 Rev A §3.4 | ITP | Low | agent |
| NCT-R-QAC-005 | Material receipt inspection The ITP shall include receipt inspection of line pipe including certificate review. | NCT-QAC-SP-0008 Rev A §3.5 | ITP | Medium | agent |
| NCT-R-QAC-006 | Welder qualification Welder qualification shall be verified before production welding (review point). | NCT-QAC-SP-0008 Rev A §3.6 | ITP | Medium | agent |
| NCT-R-QAC-007 | Drying verification The ITP shall include verification of drying to the specified dew point as an owner hold point. | NCT-QAC-SP-0008 Rev A §3.7 | ITP | Medium | agent |
| NCT-R-QAC-008 | As-built survey The ITP shall include an as-built survey of the pipeline route. | NCT-QAC-SP-0008 Rev A §3.8 | ITP | Low | agent |
| NCT-R-QAC-009 | Intervention codes Intervention codes shall be H (hold), W (witness), R (review) and S (surveillance) for contractor and owner. | NCT-QAC-SP-0008 Rev A §3.9 | ITP | Low | agent |
| NCT-R-QAC-010 | Coating repair Coating repairs shall be inspected and holiday tested. | NCT-QAC-SP-0008 Rev A §3.10 | ITP | Medium | agent |
used to check cross-references and superseded revisions
| NCT-PRC-DB-0001 | D | Design Basis - CO2 transport system | current |
| NCT-PRC-DB-0001 | C | Design Basis - CO2 transport system | superseded |
| NCT-INS-SP-0002 | 1 | Project specification - Field instrumentation | current |
| NCT-PIP-SP-0003 | B | Piping material specification and line pipe | current |
| NCT-DCC-PR-0004 | A | Document numbering and revision procedure | current |
| NCT-DCC-SP-0005 | A | CAD and drawing standard | current |
| NCT-HSE-SP-0006 | A | Layout and safety distances specification | current |
| NCT-MEC-SP-0007 | B | Pipeline valve specification | current |
| NCT-QAC-SP-0008 | A | Quality requirements for construction (ITP) | current |
| NCT-MEC-SP-0009 | A | Projectspecificatie afpersen en drogen (NL) | current |
| NCT-QAC-PR-0910 | A | Hydrotest quality procedure | current |
| NCT-INS-SP-0011 | A | Functional safety (SIS) requirements | current |
| NCT-INS-DS-0101 | A | Instrument datasheet - Pressure transmitters, compressor discharge | current (under review) |
| NCT-MEC-SP-0201 | A | Vendor technical specification - Trunkline ball valves | current (under review) |
| NCT-PRC-PID-0301 | A | P&ID - Compressor discharge and pig launcher | current (under review) |
| NCT-PRC-PID-0302 | A | P&ID - Landfall valve station | current (under review) |
| NCT-PIP-LL-0401 | A | Line list - Compressor station and trunkline | current (under review) |
| NCT-INS-IL-0501 | A | Instrument index - Compressor station and landfall | current (under review) |
| NCT-PIP-CA-0601 | A | Wall thickness calculation - 32-inch trunkline | current (under review) |
| NCT-MEC-PR-0701 | A | Afpersprocedure onshore leidingsectie (hydrotest procedure) | current (under review) |
| NCT-CIV-DW-0801 | A | Plot plan - Compressor station | current (under review) |
| NCT-QAC-ITP-0901 | A | Inspection and test plan - Pipeline construction | current (under review) |
| NCT-INS-DS-0102 | A | Instrument datasheet (not in this package) | current |
| NCT-INS-DS-0103 | A | Instrument datasheet (not in this package) | current |
| NCT-INS-DS-0104 | A | Instrument datasheet (not in this package) | current |