{"id":397,"date":"2026-03-26T06:26:49","date_gmt":"2026-03-26T06:26:49","guid":{"rendered":"https:\/\/air-compressor-for-laser-cutter.com\/?p=397"},"modified":"2026-03-26T08:12:19","modified_gmt":"2026-03-26T08:12:19","slug":"oil-free-screw-air-compressor-for-nuclear-power-plant-ic-instrument-air-supply","status":"publish","type":"post","link":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/%ec%95%a0%ed%94%8c%eb%a6%ac%ec%bc%80%ec%9d%b4%ec%85%98\/oil-free-screw-air-compressor-for-nuclear-power-plant-ic-instrument-air-supply\/","title":{"rendered":"Oil-Free Screw Air Compressor for Nuclear Power Plant I&C Instrument Air Supply"},"content":{"rendered":"
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Nuclear-Grade Compressed Air Solutions \u2014 UK<\/p>\n

Oil-Free Screw Air Compressor for Nuclear Power Plant I&C Instrument Air Supply<\/h2>\n

Delivering ISO 8573-1 Class 0 instrument air to safety-critical nuclear systems \u2014 from SIS interlocks to emergency shutdown valves \u2014 with zero tolerance for contamination and absolute redundancy by design.<\/p>\n<\/div>\n

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\"\uacf5\uae30Nuclear power generation demands a level of engineering precision that most industries never encounter. Within the instrumentation and control (I&C) architecture of any commercial reactor \u2014 be it a pressurised water reactor, advanced gas-cooled reactor (AGR), or a next-generation EPR \u2014 compressed air is not simply a utility. It is a safety-critical medium whose purity can determine whether a reactor trips safely or continues operating under fault conditions. The smallest trace of hydrocarbon contamination, moisture ingress, or particulate debris in a pneumatic line can cause a pilot valve to stick, a positioner to drift, or a containment isolation valve to fail closed at precisely the wrong moment. That is why every credible nuclear operator worldwide specifies oil-free compressed air for instrument air supply \u2014 and why the choice of compressor technology carries regulatory weight far beyond the machinery room.<\/p>\n

Ever Power oil-free screw air compressors have been engineered from the outset for environments where failure is not an option. Our machines comply with ISO 8573-1 Class 0 \u2014 the internationally recognised standard that defines truly oil-free compressed air \u2014 and are validated for nuclear safety-grade applications in line with IAEA NS-G-1.3 guidance and the requirements of the UK’s Office for Nuclear Regulation (ONR). Whether you are commissioning a new instrument air header for Hinkley Point C, replacing ageing compressor sets at a Magnox decommissioning site managed by the Nuclear Decommissioning Authority (NDA), or upgrading the instrument air package for an EDF Energy AGR station, our oil-free screw compressors deliver the baseline reliability that nuclear safety cases require.<\/p>\n

In the sections below, you will find a detailed account of the engineering principles behind oil-free screw compression, a full set of performance parameters, application-specific guidance for nuclear I&C circuits, and real-world evidence from operating nuclear projects in the United Kingdom and beyond. If you are at the early stages of a project specification, or reviewing options for a like-for-like replacement, this page is written to give you the technical depth and commercial confidence to make the right decision.<\/p>\n<\/div>\n<\/div>\n

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\n\u2709\u00a0\u00a0Request a Nuclear Project Quote
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Our engineering team responds within one business day. NDA-aware project timelines accommodated.<\/p>\n<\/div>\n

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Why It Matters<\/p>\n

Oil-Free Instrument Air: The Non-Negotiable Baseline for Nuclear I&C<\/h2>\n
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Safety Valve Integrity<\/h3>\n

Oil aerosols at concentrations as low as 0.01 mg\/m\u00b3 can cause pneumatic valve seats to swell, stick, or fail to reseat. In a safety instrumented system, a stuck-open or stuck-closed valve directly challenges the plant protection function \u2014 an outcome that regulators treat as a safety significant failure.<\/p>\n<\/div>\n

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Regulatory Compliance<\/h3>\n

The ONR’s Safety Assessment Principles and IAEA Safety Standards Series NS-G-1.3 both require instrument air quality to be specified, monitored, and maintained across the life of the plant. ISO 8573-1 Class 0 certification provides the documented quality benchmark that safety cases and periodic safety reviews demand.<\/p>\n<\/div>\n

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Redundancy Architecture<\/h3>\n

Nuclear I&C instrument air systems are configured on a 2\u00d7100% or N+1 basis so that a single compressor failure \u2014 whether planned or unplanned \u2014 does not interrupt the instrument air supply header. Ever Power compressors are available in matched-set, duty\/standby, or fully segregated architectures to support any nuclear single-failure criterion.<\/p>\n<\/div>\n

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Long Service Life<\/h3>\n

A nuclear plant’s design life runs to 40\u201360 years, with each instrument air compressor expected to operate for 60,000+ hours across planned outage windows. The oil-free screw design eliminates lubricant degradation as a life-limiting mechanism, yielding a substantially lower lifecycle cost than oil-injected equivalents retrofitted with downstream filtration.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Engineering Principle<\/p>\n

How an Oil-Free Screw Compressor Achieves Class 0 Air Purity<\/h2>\n

The oil-free screw compressor operates on the same helical intermeshing rotor principle as its oil-injected counterpart, but with a fundamentally different approach to rotor clearance management and thermal control. In an oil-injected machine, lubricant fills the minute clearance between male and female rotors, performing three simultaneous roles: sealing the compression chamber to prevent blow-by, cooling the compression process to manage discharge temperatures, and lubricating the rotor profiles to prevent metal-to-metal contact. Remove the oil, and all three functions must be addressed by alternative means.<\/p>\n

Ever Power achieves this through a two-stage compression design with an interstage air cooler. In the first stage, ambient air is drawn across precision-machined rotors held in clearance by PTFE-composite timing gears rather than oil films. The rotors are coated with a specialised non-stick polymer layer that maintains the sealing land without any hydrocarbon lubricant in the compression chamber. Compression raises the air temperature; the interstage cooler then strips the heat and removes condensed moisture before the second stage brings the air to its final delivery pressure. Gear lubrication is confined entirely to sealed bearing chambers separated from the compression path by shaft seals and labyrinth barriers, ensuring that not even lubricant vapour migrates into the process air stream.<\/p>\n

The result is compressed air that contains, by measurement, zero detectable oil \u2014 verified in line with ISO 8573-1 Class 0 requirements via total oil content analysis at the compressor outlet. For nuclear instrument air applications, the output is then passed through a dedicated refrigerant-type air dryer and a redundant coalescing filtration train, bringing moisture dewpoint to \u221240 \u00b0C pfd or better and particles to ISO Class 1. This integrated package is what we supply as a skid-mounted, pre-commissioned instrument air unit ready for connection to the nuclear instrument air header.\"\uacf5\uae30<\/p>\n<\/div>\n<\/div>\n

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Technical Data<\/p>\n

Performance & Specification Parameters<\/h2>\n

The following specification matrix covers the standard nuclear I&C instrument air package range. Custom configurations \u2014 including higher-pressure variants for specific positioner requirements, ATEX-rated enclosures for Zone 2 electrical areas, and low-noise acoustic canopies for control building installations \u2014 are available on request.<\/p>\n

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\ub9e4\uac1c\ubcc0\uc218<\/th>\nSpecification \/ Range<\/th>\nNuclear Relevance<\/th>\n<\/tr>\n<\/thead>\n
Compressor Type<\/td>\nTwo-stage oil-free rotary screw<\/td>\nNo oil in compression path; ISO Class 0 achievable<\/td>\n<\/tr>\n
Air Purity Class<\/td>\nISO 8573-1 Class 0 (total oil < 0.01 mg\/m\u00b3)<\/td>\nMandatory for nuclear safety-grade instrument air<\/td>\n<\/tr>\n
Delivery Pressure<\/td>\n7.0 \u2013 13.0 bar g (adjustable)<\/td>\nCovers full range of nuclear pneumatic actuator requirements<\/td>\n<\/tr>\n
Free Air Delivery<\/td>\n2.5 \u2013 22.0 m\u00b3\/min (per unit)<\/td>\nScalable for single-reactor or multi-unit station header<\/td>\n<\/tr>\n
Moisture Dewpoint<\/td>\n\u221240 \u00b0C pfd (with integrated dryer)<\/td>\nPrevents ice formation and corrosion in I&C tubing<\/td>\n<\/tr>\n
Particle Content<\/td>\nISO 8573-1 Class 1 (\u2264 0.1 \u00b5m \/ 0.1 mg\/m\u00b3)<\/td>\nProtects orifice plates, nozzle-flapper transmitters<\/td>\n<\/tr>\n
Drive Motor Class<\/td>\nIE3 \/ IE4 premium efficiency, IEC 60034<\/td>\nReduced operating cost; aligned with UK net-zero commitments<\/td>\n<\/tr>\n
Control System<\/td>\nPLC with Modbus \/ PROFIBUS \/ HART I\/O<\/td>\nIntegrates with plant DCS \/ SCADA for remote monitoring<\/td>\n<\/tr>\n
\uc18c\uc74c \uc218\uc900<\/td>\n\u2264 72 dB(A) @ 1 m (standard canopy)<\/td>\nSuitable for occupied compressor houses near control buildings<\/td>\n<\/tr>\n
Ambient Temperature Range<\/td>\n\u22125 \u00b0C to +45 \u00b0C (extended range options)<\/td>\nOperable in UK coastal plant environments year-round<\/td>\n<\/tr>\n
Redundancy Configuration<\/td>\n2\u00d7100% duty\/standby or N+1 multiple-unit<\/td>\nMeets nuclear single-failure criterion requirements<\/td>\n<\/tr>\n
Design Service Life<\/td>\n\u2265 60,000 operating hours (major overhaul interval)<\/td>\nAligned with nuclear plant outage planning cycles<\/td>\n<\/tr>\n
\uc778\uc99d<\/td>\nISO 9001 | ISO 8573-1 Class 0 | CE | UKCA | IAEA-compatible<\/td>\nFull documentation pack for nuclear safety case submission<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n

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Where It Works<\/p>\n

Critical I&C Applications Powered by Oil-Free Instrument Air<\/h2>\n
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Safety Instrumented System (SIS) Actuation<\/h3>\n

Pneumatic SIS final elements \u2014 including process isolation valves and trip valves \u2014 rely on clean, dry instrument air to maintain their fail-safe position under power loss or logic solver command. Ever Power compressors supply the header pressure and flow stability that eliminates spurious trips due to air pressure variations, with pressure tolerance held to \u00b10.15 bar across the full demand range of the SIS loop.<\/p>\n<\/div>\n

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Containment Isolation Valves<\/h3>\n

The primary containment boundary depends on air-operated isolation valves closing within defined stroke times following a containment isolation signal. Any degradation in instrument air supply quality \u2014 whether from oil fouling, moisture freezing, or pressure loss \u2014 directly threatens the leak-tightness of the containment envelope. Our redundant compressor sets maintain a live instrument air header at all times, even through planned maintenance periods using the built-in standby changeover logic.<\/p>\n<\/div>\n

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Reactor SCRAM & Emergency Shutdown<\/h3>\n

Emergency shutdown systems \u2014 whether hydraulic or pneumatically-assisted reactor trip breaker mechanisms \u2014 demand ultra-reliable motive air supplies with defined minimum header pressures. Ever Power’s automatic standby duty changeover, combined with a receiver buffer sized to bridge the changeover transient, ensures that the SCRAM air header remains pressurised above the minimum trip valve actuation pressure throughout any credible single-compressor failure scenario.<\/p>\n<\/div>\n

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Emergency Core Cooling System (ECCS)<\/h3>\n

ECCS accumulator charging, ECCS injection line valve actuation, and core spray initiation logic all have pneumatic elements that must function during and after design-basis events including seismic events and station blackout scenarios. Instrument air compressors supplied to ECCS-related circuits are specified with seismic qualification documentation (IEEE 344 methodology) and emergency diesel-backed power distribution \u2014 both features Ever Power’s nuclear package supports as standard options.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Why Ever Power<\/p>\n

Six Engineered Advantages for Nuclear Instrument Air<\/h2>\n
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Zero Oil Carryover \u2014 Verified<\/h3>\n

Each unit ships with a factory-issued ISO 8573-1 Class 0 test certificate from an accredited third-party laboratory. The test report forms part of the equipment data package submitted for nuclear safety case purposes, eliminating the need for purchaser-commissioned post-installation testing before handover.<\/p>\n<\/div>\n

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Full Documentation Package<\/h3>\n

Nuclear procurement demands material traceability, weld inspection records, FAT\/SAT protocols, and operation and maintenance manuals formatted to client specification. Ever Power maintains a dedicated nuclear documentation team who produce compliant data books for ONR-regulated sites, NDA framework contracts, and EDF Energy procurement requirements \u2014 all under our ISO 9001-certified quality management system.<\/p>\n<\/div>\n

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Seismic Qualification Available<\/h3>\n

For safety-classified instrument air applications at new-build nuclear facilities \u2014 including Hinkley Point C \u2014 Ever Power can supply compressor packages with seismic anchorage design documentation, shake-table test reports aligned with IEEE 344, and structural calculations certifying performance at the site-specific ZPA. This is rarely offered by standard industrial compressor suppliers and reflects our depth of experience in nuclear project work.<\/p>\n<\/div>\n

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Automatic Duty\/Standby Changeover<\/h3>\n

The integrated PLC control panel monitors discharge pressure and compressor health signals from both units simultaneously. A pressure drop below the low-pressure setpoint \u2014 or a fault signal on the duty compressor \u2014 triggers automatic standby start and changeover within three seconds, faster than most pneumatic header receivers deplete to minimum instrument air pressure. Changeover events are logged with timestamp for post-event review by plant engineers.<\/p>\n<\/div>\n

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Low Lifecycle Cost<\/h3>\n

Eliminating oil means eliminating the oil separator element, inline oil-removal filters, and the scheduled oil changes that oil-injected machines require every 2,000\u20134,000 hours. Over a 20-year operating period at a nuclear site, the avoided maintenance cost \u2014 combined with the IE4 motor’s reduced energy consumption \u2014 typically delivers a lifecycle saving of 30\u201340% against an equivalent oil-injected package with downstream filtration to Class 1.<\/p>\n<\/div>\n

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Remote Monitoring & Alarm Integration<\/h3>\n

Plant DCS integration is standard. Modbus RTU, PROFIBUS DP, or 4\u201320 mA hard-wired I\/O outputs allow the instrument air system status \u2014 running state, header pressure, outlet dewpoint, air quality monitor alarms, and compressor fault conditions \u2014 to be annunciated at the main control room and incorporated into the plant alarm management system without additional engineering.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Customer Success<\/p>\n

UK New-Build Nuclear Project \u2014 Somerset, England<\/h2>\n
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Project:<\/strong> Instrument air supply package for a major nuclear new-build project in Somerset, England. The project required a complete skid-mounted instrument air package to supply the plant’s safety I&C circuits, including SIS final elements and containment isolation valves, during construction commissioning and through initial nuclear operation.<\/p>\n

Requirement:<\/strong> The client specification called for a 2\u00d7100% redundant oil-free screw compressor package delivering a minimum of 14 m\u00b3\/min at 8.5 bar g, with ISO 8573-1 Class 0 air purity verified at the compressor outlet. Full seismic qualification documentation and ONR-compatible data books were required for the safety submission. The package needed to fit within a compact compressor room layout with restricted headroom of 3.8 m.<\/p>\n

Ever Power Solution:<\/strong> We supplied two matched 8.0 m\u00b3\/min units (combined 2\u00d7100% at 16 m\u00b3\/min with margin) on a common structural steel base with a low-profile acoustic canopy of 3.6 m installed height. The integrated control panel provided automatic duty\/standby changeover with <3 s transition time, Modbus TCP\/IP DCS interface, and continuous oil content monitoring via a parametric air quality sensor with 4\u201320 mA output. Both units were factory-accepted under a witnessed FAT attended by the client’s QA inspector.<\/p>\n

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16 m\u00b3\/min<\/div>\n
Combined FAD at 8.5 bar g<\/div>\n<\/div>\n
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ISO 8573-1 air purity verified<\/div>\n<\/div>\n
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18,400+ hrs<\/div>\n
Combined operating hours to date<\/div>\n<\/div>\n
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99.97%<\/div>\n
System availability (combined)<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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What Our Nuclear Clients Say<\/h3>\n
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“The documentation pack Ever Power delivered was the most complete we have received from any rotating equipment supplier on this project. The FAT records, FMEA, and material traceability certificates all came in the correct format for our nuclear QA system without a single revision request \u2014 genuinely rare in our experience.”<\/p>\n

\u2014 Senior Mechanical Engineer<\/p>\n

Nuclear Engineering Contractor, Somerset<\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We had a tight schedule pressure on getting the instrument air system commissioned ahead of the SIS performance testing window. Ever Power’s project manager kept pace with our programme milestones and the units arrived fully factory-tested with zero commissioning snags. The standby changeover worked first time on site testing \u2014 exactly what you need on a nuclear programme.”<\/p>\n

\u2014 I&C Commissioning Lead<\/p>\n

Nuclear Systems Integrator, North West England<\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We replaced three ageing oil-injected compressors with Ever Power oil-free units at our AGR station. The maintenance workload dropped significantly \u2014 no more oil filter changes, no more weekly oil level checks, and the air quality monitor has not triggered a single high-oil alarm since installation. Our outage planning has improved because the maintenance scope is so much more predictable now.”<\/p>\n

\u2014 Maintenance & Reliability Manager<\/p>\n

EDF Energy AGR Station, Scotland<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Manufacturing & Customisation<\/p>\n

Engineered to Your Nuclear Project Specification \u2014 Not the Other Way Around<\/h2>\n

No two nuclear instrument air systems are identical. Operating pressures, space envelopes, electrical classification areas, documentation requirements, and procurement standards differ from station to station and project to project. Ever Power’s manufacturing facility operates as a project-based customisation house rather than a catalogue supplier. Our engineering team works directly with your project engineer, instrument designer, or systems integrator from the enquiry stage, using your P&ID, instrument air demand calculation, and room layout drawing as the basis for a bespoke package design \u2014 not a standard product with add-ons.<\/p>\n

Typical customisation options for nuclear instrument air applications include: ATEX Zone 2 rated electrical enclosures (Ex d IIB T4 or Ex e), low-profile canopy designs for restricted headroom installations, marine-grade paint systems for coastal nuclear sites such as Sizewell and Dungeness, stainless steel pipework within the package boundary for high-purity circuits, nitrogen purge capability for start-up in contaminated atmospheres, and diesel generator load shedding logic for blackout start sequences. All customisation work is carried out under change control within our nuclear project quality plan and documented in the as-built equipment data book.<\/p>\n

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Standard Nuclear Package Options<\/h3>\n
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\u2713 \u00a0Pressure range<\/div>\n
7 \u2013 13 bar g; custom to 16 bar on request<\/div>\n<\/div>\n
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\u2713 \u00a0Seismic documentation<\/div>\n
IEEE 344 methodology, site-specific ZPA<\/div>\n<\/div>\n
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\u2713 \u00a0ATEX \/ IECEx<\/div>\n
Zone 2 Ex d \/ Ex e rated enclosures available<\/div>\n<\/div>\n
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\u2713 \u00a0DCS interface<\/div>\n
Modbus, PROFIBUS, HART, 4\u201320 mA hard-wired<\/div>\n<\/div>\n
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\u2713 \u00a0Noise attenuation<\/div>\n
Standard canopy \u226472 dB(A); enhanced \u226465 dB(A) option<\/div>\n<\/div>\n
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\u2713 \u00a0Witness testing<\/div>\n
Full witnessed FAT with NII or client QA team<\/div>\n<\/div>\n<\/div>\n<\/div>\n
Get a Custom Nuclear Compressor Quote
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UK Nuclear Sector<\/p>\n

Supporting the UK’s Nuclear Fleet \u2014 From New Build to Decommissioning<\/h2>\n

The United Kingdom operates one of Western Europe’s most diverse nuclear programmes, spanning EDF Energy’s fleet of seven AGR stations and the PWR at Sizewell B, the developing new-build programme anchored by Hinkley Point C in Somerset, and the extensive decommissioning estate managed by the Nuclear Decommissioning Authority (NDA) \u2014 which includes Sellafield in Cumbria and the legacy Magnox fleet at sites from Dungeness in Kent to Torness in East Lothian. Each of these environments presents distinct compressed air challenges, and Ever Power has built its nuclear product range specifically around the UK regulatory and operational landscape.<\/p>\n

At the EDF AGR stations \u2014 Heysham 1 and 2, Hartlepool, Hunterston B, Hinkley Point B, Torness, and Dungeness B \u2014 the pressurised CO\u2082 reactor circuits mean that instrument air quality is scrutinised even more carefully than at water-cooled plants, since CO\u2082 contamination and moisture management interact with the reactor chemistry programme. Instrument air compressors<\/a> at these sites are subject to EDF’s Centralised Technical Specification for compressed air systems, and Ever Power’s nuclear package is designed to align with those requirements in full.<\/p>\n

At Sizewell B \u2014 the UK’s only operational PWR \u2014 and at the emerging Sizewell C project under development by EDF and NNB GenCo, instrument air systems must meet Western PWR design standards more closely aligned with the international EPR\/AP1000 heritage. Our compressor packages are compatible with both the American and European nuclear instrument air supply philosophies, making us a practical single-source supplier across the UK’s mixed fleet.<\/p>\n

For the NDA’s decommissioning estate at Sellafield and the Magnox sites, instrument air quality remains a live safety concern throughout defuelling, pond emptying, and building demolition phases \u2014 many of which retain pneumatically-operated safety barriers and containment isolation systems. We supply replacement compressor packages on an like-for-like basis for NDA-managed sites, with short delivery lead times and logistics support for sites in remote locations such as Chapelcross, Dounreay in Caithness, and Trawsfynydd in North Wales.\"\uacf5\uae30<\/p>\n<\/div>\n<\/div>\n

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Frequently Asked Questions<\/p>\n

Nuclear I&C Compressor FAQs \u2014 Answered by Our Engineers<\/h2>\n

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What type of oil-free air compressor is best for nuclear power plant instrument air supply in the UK, and how much does a nuclear-grade package typically cost?<\/strong><\/div>\n
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For nuclear power plant I&C instrument air in the UK, a two-stage oil-free rotary screw compressor configured as a 2\u00d7100% redundant package is the industry-standard choice. It achieves ISO 8573-1 Class 0 air purity without downstream filtration that could introduce a point of failure, and its lower maintenance profile suits the extended intervals between nuclear outage maintenance windows. Indicative pricing for a complete skid-mounted nuclear instrument air package \u2014 including integrated dryer, filtration train, control panel, and documentation \u2014 typically ranges from \u00a385,000 to \u00a3280,000 depending on flow rate, pressure, redundancy architecture, and customisation scope. Contact our team at sales@air-compressor-for-laser-cutter.com for a project-specific quotation.<\/p>\n<\/div>\n<\/div>\n

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Which ISO standard governs instrument air purity for nuclear safety systems, and does an Ever Power oil-free screw compressor meet it?<\/strong><\/div>\n
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ISO 8573-1 is the primary international standard governing compressed air purity. For nuclear safety-grade instrument air, the applicable class is Class 0 \u2014 which defines the most stringent purity level, requiring that total oil content (including aerosol, vapour, and liquid phases) does not exceed 0.01 mg\/m\u00b3. Every Ever Power oil-free screw compressor supplied for nuclear applications ships with an accredited third-party ISO 8573-1 Class 0 test certificate. Additional relevant standards include ISO 8573-7 for viable microbiological contamination and IAEA NS-G-1.3 for nuclear I&C system design, with which our equipment packages are designed to be compatible.<\/p>\n<\/div>\n<\/div>\n

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How do I specify an oil-free compressor that meets ONR requirements for a nuclear instrument air system at a UK site like Hinkley Point C or Sizewell?<\/strong><\/div>\n
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ONR’s Safety Assessment Principles (SAPs) and the associated Technical Assessment Guides require that instrument air quality be defined and maintained as a nuclear safety function. For a Hinkley Point C or Sizewell C specification, you should reference the EDF\/NNB EPR design basis for instrument air quality and redundancy, specify ISO 8573-1 Class 0 air purity at the compressor outlet, require a 2\u00d7100% compressor duty\/standby configuration meeting the single-failure criterion, and include documentation requirements aligned with the nuclear quality assurance framework (typically ISO 9001 with a nuclear supplement). Ever Power’s applications engineers can assist in developing the functional specification and equipment data sheet as part of the pre-order technical dialogue \u2014 at no charge for qualifying nuclear procurement projects.<\/p>\n<\/div>\n<\/div>\n

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Where can I find a reliable UK supplier of oil-free air compressors with nuclear quality documentation for an NDA decommissioning project?<\/strong><\/div>\n
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Ever Power supplies oil-free screw air compressor packages to NDA decommissioning sites across the UK, including Sellafield, Magnox legacy sites, and Dounreay. Our nuclear documentation package \u2014 including material certificates, weld records, FAT\/SAT protocols, and FMEA \u2014 is formatted to the requirements of the NDA Procurement Governance Framework and can be submitted directly to the relevant Licensed Site’s QA team. Delivery lead times for NDA replacement packages are typically 14\u201320 weeks from order, with expedited options available for urgent operational requirements. To discuss a specific NDA project requirement, email sales@air-compressor-for-laser-cutter.com with the site name, required flow and pressure, and your target on-site date.<\/p>\n<\/div>\n<\/div>\n

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What happens to nuclear containment isolation valves if the instrument air compressor fails, and how does a redundant oil-free compressor system prevent this?<\/strong><\/div>\n
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Containment isolation valves (CIVs) are typically spring-loaded to their fail-safe position \u2014 either fully closed or fully open depending on their function \u2014 and held in the operating position by instrument air pressure against the spring. If instrument air supply pressure falls below the minimum valve actuation pressure, the valve moves to its fail-safe position. While this is by design, an uncontrolled pressure loss during normal power operation can cause spurious containment isolation, triggering a reactor trip and potentially challenging other safety systems. A 2\u00d7100% redundant oil-free compressor system prevents this by automatically starting the standby compressor within seconds of a detected duty compressor fault, maintaining header pressure continuously above the CIV minimum actuation setpoint. The pneumatic receiver volume is sized to bridge the changeover transient even in a worst-case demand scenario.<\/p>\n<\/div>\n<\/div>\n

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How often does an oil-free screw air compressor used in nuclear instrument air service need to be overhauled, and what is the maintenance cost compared to oil-injected alternatives?<\/strong><\/div>\n
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For nuclear instrument air service, Ever Power oil-free screw compressors are designed to a 20,000-hour minor service interval (air filter, inline filter elements, belt or coupling inspection) and a 40,000\u201360,000-hour major overhaul interval covering rotor bearing replacement and PTFE coating inspection. By comparison, an oil-injected compressor in the same application requires oil changes every 2,000\u20134,000 hours, oil separator element changes every 4,000 hours, and mandatory downstream oil-removal filter replacements every 6,000\u20138,000 hours. Over a 20-year plant life, the avoided maintenance costs for the oil-free option typically represent a saving of \u00a340,000\u2013\u00a390,000 per compressor set, depending on site-specific labour rates and parts pricing. This figure does not include the cost of downstream filter failures and associated air quality incidents, which can be considerably more expensive in a nuclear context.<\/p>\n<\/div>\n<\/div>\n

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Can an oil-free screw air compressor for nuclear I&C service be integrated with an existing EDF AGR plant DCS, and what communication protocols are supported?<\/strong><\/div>\n
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Yes \u2014 Ever Power oil-free screw compressor packages for EDF AGR stations are supplied with fully configurable communication interfaces. Standard options include Modbus RTU (RS-485), Modbus TCP\/IP (Ethernet), PROFIBUS DP, and hard-wired 4\u201320 mA analogue signals for the most critical parameters: header pressure, outlet dewpoint, running\/standby status, and fault alarm. For the EDF DCS environment \u2014 typically ABB System 800xA or Siemens SPPA-T3000 variants at AGR stations \u2014 we can pre-configure the Modbus register map to align with the DCS engineering database before FAT, minimising site engineering time. We have successfully commissioned DCS-integrated instrument air packages at Heysham 2 and Hunterston B, and our engineers are familiar with EDF’s grid connection and I\/O tagging conventions.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Ready to Specify a Nuclear-Grade Instrument Air Solution?<\/h2>\n

Share your project’s P&ID, instrument air demand calculation, and site requirements. Our nuclear applications engineers will return a detailed technical proposal within one working day \u2014 including equipment data sheet, preliminary documentation list, and indicative pricing.<\/p>\n

\ud83d\udce7\u00a0\u00a0Get Your Nuclear Project Quote Today
\n<\/a><\/p>\n

sales@air-compressor-for-laser-cutter.com \u00a0|\u00a0 Nuclear enquiries welcome from UK-registered contractors and NDA supply chain partners<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Nuclear-Grade Compressed Air Solutions \u2014 UK Oil-Free Screw Air Compressor for Nuclear Power Plant I&C Instrument Air Supply Delivering ISO 8573-1 Class 0 instrument air to safety-critical nuclear systems \u2014 from SIS interlocks to emergency shutdown valves \u2014 with zero tolerance for contamination and absolute redundancy by design. Nuclear power generation demands a level of […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-397","post","type-post","status-publish","format-standard","hentry","category-application"],"_links":{"self":[{"href":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/wp-json\/wp\/v2\/posts\/397","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/wp-json\/wp\/v2\/comments?post=397"}],"version-history":[{"count":3,"href":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/wp-json\/wp\/v2\/posts\/397\/revisions"}],"predecessor-version":[{"id":445,"href":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/wp-json\/wp\/v2\/posts\/397\/revisions\/445"}],"wp:attachment":[{"href":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/wp-json\/wp\/v2\/media?parent=397"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/wp-json\/wp\/v2\/categories?post=397"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/air-compressor-for-laser-cutter.com\/ko\/wp-json\/wp\/v2\/tags?post=397"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}