{
  "@context": "https://schema.org",
  "@type": "Dataset",
  "dataset_id": "dccool-us-vs-cn",
  "title": "China-to-US Data-center Liquid Cooling Compliance Gap Matrix",
  "product": "Data-center liquid cooling (cold plate / CDU)",
  "target_market": "United States (UL/NFPA)",
  "canonical_url": "https://asaptic.com/standard/datacenter-cooling-china-to-us",
  "version": "2026-06-11",
  "last_verified": "2026-06-11",
  "provenance": "AI-compiled, multi-model cross-checked, not human-verified. Informational only; confirm with the official regulator and a qualified professional. Not legal/certification/customs/market-access advice.",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "row_count": 6,
  "rows": [
    {
      "id": "dccoolus-fluids-01",
      "requirement": "Data Center Liquid Cooling — Fire Protection of ICT Equipment (NFPA 75 / NFPA 76)",
      "target_requirement": "NFPA 75 (Standard for the Fire Protection of Information Technology Equipment, 2024 edition — current) and NFPA 76 (Standard for the Fire Protection of Telecommunications Facilities, 2020 edition) govern fire protection design for data centers and ICT rooms in the US. NFPA 75 sets requirements for construction, suppression systems (clean agents, water mist, sprinklers), detection, and — critically for liquid-cooled infrastructure — coolant containment, leak detection, and management of flammable or combustible liquids used in cooling systems. The 2024 edition added Chapter 8 specifically for ITE immersion cooling equipment, requiring: coolant fluid flash point ≥135 °C (Class IIIB per NFPA 30 2024 edition), off-gas detection systems, and dedicated containment provisions for single-phase and two-phase immersion tanks. Where direct liquid cooling (DLC), immersion cooling, or two-phase cooling systems are deployed, the flash point and flammability classification of the coolant fluid directly determines which fire protection provisions apply under NFPA 75 Chapters 7–8 and NFPA 30 (Flammable and Combustible Liquids Code, 2024 edition). Non-flammable dielectric fluids (e.g. certain mineral oils, synthetic esters) face containment and spill-control requirements; flammable fluids trigger stricter ventilation, suppression, and storage rules.",
      "target_standards": [
        "NFPA 75 (2024 edition — current; adoption by jurisdiction varies; 2020 edition still in force in some jurisdictions pending local adoption). 2024 edition adds Chapter 8 for ITE immersion cooling equipment: requires coolant flash point ≥135 °C (Class IIIB per NFPA 30), off-gas detection, and specific containment provisions.",
        "NFPA 76 (2020 edition)",
        "NFPA 30 — Flammable and Combustible Liquids Code, 2024 edition (coolant fluid flash-point classification)"
      ],
      "china_equivalent": "China's primary fire protection standard for data centers is GB 50174-2017 (Code for Design of Electronic Information System Room), which covers suppression, detection, and structural fire resistance for data centers. GB 50016 (Code for Fire Protection Design of Buildings) provides the broader building fire code framework. Neither GB 50174 nor GB 50016 contains provisions specifically tailored to the fire-protection implications of liquid immersion cooling or two-phase dielectric fluid cooling systems at the depth of NFPA 75 Chapter 7. Chinese standards address conventional data center fire suppression (halon alternatives, inert gas, water mist) but do not prescribe coolant flash-point-based classification rules or specific containment/leak-detection requirements for immersion cooling fluids.",
      "china_standards": [
        "GB 50174-2017 — Code for Design of Electronic Information System Room",
        "GB 50016-2014 (2018 revision) — Code for Fire Protection Design of Buildings"
      ],
      "gap": "NFPA 75 (2024 edition) integrates coolant fluid flammability classification (per NFPA 30 2024 edition) directly into data center fire protection design — a linkage absent from Chinese standards. The 2024 edition's new Chapter 8 adds immersion-cooling-specific provisions (flash point ≥135 °C, off-gas detection) that have no equivalent in GB 50174 or any current Chinese standard. Chinese manufacturers or operators deploying liquid-cooled systems in the US should evaluate each coolant fluid's flash point, document the NFPA 30 classification where the adopted fire code or AHJ relies on it, and address the corresponding NFPA 75 Chapters 7–8 containment, detection, suppression, ventilation, and off-gas provisions as part of AHJ approval. Data center designs compliant with GB 50174 alone will not normally satisfy US fire-code review for liquid-cooling installations without supplemental US-specific fire protection engineering.",
      "mandatory_status": {
        "target": "Mandatory obligation comes from adopted state/local fire and building codes and AHJ approval. NFPA 75, NFPA 76, and NFPA 30 are consensus standards that become enforceable only where incorporated by an adopted code, permit condition, contract, or AHJ requirement; otherwise they are voluntary reference standards.",
        "cn": "GB 50174-2017 is mandatory for data center design in China; no equivalent liquid-cooling-specific fire protection rules apply"
      },
      "verdict": "[INFORMATIONAL] INFORMATIONAL ONLY — Data center liquid cooling systems deployed in the US must satisfy the fire and building codes adopted in the installation jurisdiction and obtain AHJ approval. NFPA 75 and NFPA 30 are voluntary consensus standards unless incorporated by those codes, permit conditions, contracts, or AHJ requirements. Chinese standard compliance (GB 50174) does not substitute for US project-specific fire protection engineering. This is not legal or regulatory advice.",
      "source": {
        "url": "https://www.nfpa.org/codes-and-standards/nfpa-75-standard-development/75",
        "publisher": "National Fire Protection Association (NFPA)",
        "accessed": "2026-06-12",
        "verified": false
      }
    },
    {
      "id": "dccoolus-fluids-02",
      "requirement": "Data Center Liquid Cooling — PFAS Restrictions on Dielectric and Two-Phase Immersion Cooling Fluids (US EPA TSCA + State Laws) [UNVERIFIED — state-law specifics]",
      "target_requirement": "Many dielectric and two-phase immersion cooling fluids historically used in data centers — including fluorinated fluids such as perfluorocarbon (PFC) and hydrofluoroether (HFE) compounds — are per- and polyfluoroalkyl substances (PFAS) or contain PFAS. The US regulatory landscape for PFAS in industrial fluids is rapidly evolving: (1) EPA TSCA Section 8(a)(7) requires manufacturers and importers of PFAS-containing substances to report data on uses, quantities, and exposure. The reporting deadline has been extended multiple times: under the May 2025 interim final rule, most filers are expected to submit by approximately 13 October 2026; a further EPA amendment published April 2026 introduced a January 31 2027 backstop date. Verify the current deadline at the EPA source before relying. (2) EPA has initiated TSCA Section 6 risk evaluation processes for certain PFAS chemical categories, potentially leading to use restrictions or prohibitions. (3) Multiple US states have enacted or proposed PFAS restrictions that, depending on scope, may cover fluorinated dielectric cooling fluids used in data centers — for example, restrictions on PFAS in industrial or commercial products in states including but potentially not limited to Minnesota, Maine, Colorado, and California. [UNVERIFIED: the precise applicability of specific state PFAS statutes to data-center immersion cooling fluids is not confirmed; state laws vary significantly by chemical scope, product category, and enforcement date.] (4) Fluid suppliers: 3M completed its exit from PFAS production by end of 2025 — last Novec orders were accepted through March 31 2025; Novec 7100, 7000, 649, and Fluorinert FC-72 are now discontinued. Two-phase immersion cooling systems that relied on 3M Novec fluids face active supply disruption; alternative fluid qualification is required.",
      "target_standards": [
        "TSCA Section 8(a)(7) — PFAS Reporting Rule (40 CFR Part 705; EPA, effective 2024)",
        "TSCA Section 6 — EPA PFAS risk evaluation and potential restriction authority",
        "[UNVERIFIED] State PFAS product restriction laws — Minnesota, Maine, Colorado, California and others (scope and applicability to industrial cooling fluids varies; verify current state law before relying)"
      ],
      "china_equivalent": "China currently has no comprehensive PFAS regulatory regime equivalent to US EPA TSCA reporting requirements or US state PFAS product restriction laws as applied to industrial cooling fluids. China's chemical regulatory framework (MEE New Chemical Substances Notification — MEP Order No. 7 / MEE Order No. 12, 2020) requires notification for new chemical substances but does not impose PFAS-specific use restrictions on dielectric cooling fluids. China is developing a PFAS management policy (MEE has issued draft proposals for PFAS control), but as of mid-2026 no binding restriction on PFAS-containing data-center cooling fluids is in force in China. Fluorinated dielectric fluids remain in general commercial use in China without the reporting, phaseout, or restriction obligations applicable in the US.",
      "china_standards": [
        "MEE Order No. 12 (2020) — Measures for Environmental Management Registration of New Chemical Substances (China; does not impose PFAS-specific cooling fluid restrictions)"
      ],
      "gap": "China-origin data center liquid cooling systems using PFAS-containing dielectric or two-phase fluids face a significant and rapidly expanding US regulatory gap: (1) TSCA 8(a)(7) reporting obligations apply to manufacturers and importers of PFAS substances used in the US, including cooling fluid producers and potentially equipment importers; current deadline for most filers is approximately October 13 2026 (January 31 2027 backstop — verify at EPA source); (2) ongoing EPA TSCA Section 6 risk evaluations may result in use restrictions or prohibitions on specific PFAS cooling fluid chemistries; (3) state-level PFAS product laws [UNVERIFIED for specific applicability to this fluid category] may restrict or ban certain fluorinated cooling fluids in specific US states; (4) 3M Novec fluids (Novec 7100, 7000, 649, Fluorinert FC-72) are now discontinued — the supply disruption has materialized and operators must qualify alternative fluids. No analogous obligations exist in China, creating a compliance gap that requires fluid chemistry review, TSCA reporting assessment, and state-law due diligence for any China-origin liquid cooling system entering the US market.",
      "mandatory_status": {
        "target": "TSCA 8(a)(7) reporting is mandatory for covered PFAS manufacturers/importers; TSCA Section 6 restrictions if imposed are mandatory; state PFAS product laws are mandatory within the enacting state [UNVERIFIED: applicability to cooling fluids varies by state]",
        "cn": "No equivalent mandatory PFAS reporting or restriction regime for cooling fluids in China as of mid-2026"
      },
      "verdict": "[INFORMATIONAL] INFORMATIONAL ONLY — PFAS-containing dielectric and two-phase cooling fluids used in US data centers are subject to EPA TSCA reporting requirements and potentially to evolving federal and state PFAS restrictions. China has no equivalent regime. Manufacturers and operators should conduct fluid chemistry screening, assess TSCA 8(a)(7) reporting obligations, and perform state-law due diligence before deploying fluorinated cooling fluids in the US. State-law specifics are flagged [UNVERIFIED] and must be independently confirmed. This is not legal or regulatory advice.",
      "source": {
        "url": "https://www.epa.gov/assessing-and-managing-chemicals-under-tsca/tsca-section-8a7-reporting-and-recordkeeping",
        "publisher": "US Environmental Protection Agency (EPA)",
        "accessed": "2026-06-12",
        "verified": false
      }
    },
    {
      "id": "dccoolus-market-01",
      "requirement": "US Market Access — Electrical Safety Listing (NRTL) and Authority Having Jurisdiction (AHJ) Approval",
      "target_requirement": "Liquid cooling equipment installed in US data centers is typically required by customers, workplace-safety practice, and AHJs to carry a listing mark from an OSHA-recognized Nationally Recognized Testing Laboratory (NRTL) or to pass an AHJ-accepted field evaluation. UL 62368-1 (Audio/Video, Information and Communication Technology Equipment) is a common NRTL evaluation standard, but the binding obligation is the adopted electrical/building code, OSHA-recognized NRTL framework, permit condition, or contract — not UL 62368-1 by itself. Where the National Electrical Code (NEC) is adopted, Article 110.3(B) requires listed or labeled equipment to be installed and used in accordance with its listing and labeling. Final installation also requires sign-off from the local Authority Having Jurisdiction (AHJ), typically the city or county building official, who enforces applicable adopted codes and local amendments. [UNVERIFIED: some AHJs accept field evaluations by NRTLs as an alternative to a factory listing for custom or one-off systems.]",
      "target_standards": [
        {
          "name": "UL 62368-1 (3rd Ed.) — Audio/Video, IT and Communication Technology Equipment Safety",
          "type": "NRTL Safety Standard",
          "mandatory": false,
          "notes": "Voluntary consensus standard commonly used by NRTLs for IT/data-center electrical equipment; it becomes required only when selected by the NRTL, incorporated by code/AHJ, or imposed by contract.",
          "source": {
            "url": "https://www.ul.com/resources/ul-62368-1-standard",
            "publisher": "UL Standards & Engagement",
            "accessed": "2026-06-12",
            "verified": false
          }
        },
        {
          "name": "OSHA NRTL Program — 29 CFR 1910.7",
          "type": "Federal Regulation",
          "mandatory": true,
          "notes": "Defines the NRTL program; listing under an OSHA-recognized NRTL (UL, CSA, Intertek/ETL, etc.) satisfies NEC listing requirements.",
          "source": {
            "url": "https://www.osha.gov/nationally-recognized-testing-laboratory-program",
            "publisher": "US Occupational Safety and Health Administration (OSHA)",
            "accessed": "2026-06-12",
            "verified": false
          }
        },
        {
          "name": "NFPA 70 (NEC) Article 110.3(B) — Equipment Installation per Listing",
          "type": "Adopted Standard / Building Code",
          "mandatory": true,
          "notes": "Requires that listed equipment be installed and used in accordance with its listing and labeling instructions; enforced by AHJ at permit/inspection stage.",
          "source": {
            "url": "https://www.nfpa.org/codes-and-standards/nfpa-70-standard-development/70",
            "publisher": "National Fire Protection Association (NFPA)",
            "accessed": "2026-06-12",
            "verified": false
          }
        }
      ],
      "china_equivalent": "In China, electrical safety for data-center equipment is governed primarily by the GB 4943.1 series (Safety of IT Equipment) and GB/T 19216 series (Fire and Overcurrent Protection). For liquid cooling systems specifically, GB 50174-2017 (Code for Design of Electronic Information System Room) sets facility-level requirements. Certification is typically obtained through China Compulsory Certification (CCC / 3C) for consumer electronics, but data-center infrastructure often relies on voluntary CB/CQC schemes; AHJ-equivalent inspection is performed by local fire bureaus (消防局) and construction authorities. [UNVERIFIED: the precise GB standard mapping to UL 62368-1 for immersion/liquid cooling hardware continues to evolve as of 2026.]",
      "china_standards": [
        {
          "name": "GB 4943.1 — Safety of IT Equipment",
          "type": "Mandatory National Standard (for CCC scope)",
          "mandatory": false,
          "notes": "CN functional equivalent to IEC/UL 62368-1 for IT electrical safety; mandatory CCC only applies to certain product categories — data-center cooling infrastructure often falls outside CCC scope.",
          "source": {
            "url": "https://std.samr.gov.cn/",
            "publisher": "State Administration for Market Regulation (SAMR) — National Standards Database",
            "accessed": "2026-06-12",
            "verified": false
          }
        },
        {
          "name": "GB 50174-2017 — Code for Design of Electronic Information System Room",
          "type": "Mandatory National Standard",
          "mandatory": true,
          "notes": "Governs data-center facility design in China including cooling system requirements; enforced by local construction authorities.",
          "source": {
            "url": "https://std.samr.gov.cn/",
            "publisher": "State Administration for Market Regulation (SAMR) — National Standards Database",
            "accessed": "2026-06-12",
            "verified": false
          }
        }
      ],
      "gap": "The primary gap is the NRTL/AHJ approval pathway: US market entry for data-center liquid cooling equipment commonly requires a UL, ETL, CSA, or equivalent NRTL listing or field evaluation under the applicable NRTL product category; UL 62368-1 is one common evaluation standard, not a standalone legal mandate. Chinese GB certifications are not recognized by US AHJs as substitutes for adopted-code compliance. Testing and listing costs and timelines (typically 3–9 months for new product categories) are material. Additionally, each installation requires AHJ approval, which varies by jurisdiction and may trigger local code amendments beyond the base NEC. China's GB-centric approval pathway does not transfer: a CCC mark or GB test report holds no standing with a US AHJ unless specifically accepted for a narrow purpose.",
      "mandatory_status": {
        "target": "Mandatory obligation comes from OSHA workplace rules, adopted electrical/building codes, and AHJ permit/inspection approval. NRTL listing or field evaluation is commonly required by AHJs/customers; UL 62368-1 is a voluntary consensus standard used for evaluation unless incorporated by code, AHJ condition, or contract.",
        "cn": "Partially mandatory — GB 50174-2017 mandatory for facility design; CCC mandatory only for listed product categories (data-center cooling infrastructure often exempt); local fire/construction inspection mandatory"
      },
      "verdict": "[INFORMATIONAL] Informational only. A Chinese liquid cooling manufacturer entering the US data-center market should plan for NRTL listing or AHJ-accepted field evaluation before installation in US facilities. UL 62368-1 may be the applicable evaluation standard, but the legal gate is the adopted code and AHJ approval. GB certifications held in China do not substitute. Engage an accredited NRTL early; budget 3–9 months and material testing fees for a new product category. Consult legal counsel for jurisdiction-specific AHJ requirements.",
      "source": {
        "url": "https://www.osha.gov/nationally-recognized-testing-laboratory-program",
        "publisher": "US Occupational Safety and Health Administration (OSHA)",
        "accessed": "2026-06-12",
        "verified": false
      }
    },
    {
      "id": "dccoolus-market-02",
      "requirement": "US Market Access — Hyperscaler Operator Qualification (OCP / De-Facto Commercial Gate) and Federal/Government Supply-Chain Requirements (NDAA)",
      "target_requirement": "Beyond legal/code compliance, commercial access to large US hyperscaler data centers (Microsoft, Meta, Google, Amazon) is gated by operator qualification programs. The Open Compute Project (OCP) publishes open hardware specifications — including liquid cooling interoperability standards under OCP's Cooling Environments project (formerly the Advanced Cooling Solutions workgroup, now consolidated) — and hyperscalers increasingly require OCP conformance or their own vendor qualification audits (factory assessment, thermal/hydraulic performance validation, cybersecurity questionnaire). This is a de-facto commercial requirement, not law. For federal and government-operated data centers, the National Defense Authorization Act (NDAA) Section 889 bans procurement of telecommunications and video surveillance equipment from specified Chinese entities (Huawei, ZTE, Hikvision, Dahua, Hytera and their subsidiaries/affiliates); broader supply-chain scrutiny under Executive Orders on securing the ICT supply chain may also apply to data-center cooling infrastructure. [UNVERIFIED: whether liquid cooling hardware from Chinese OEMs not named in NDAA Sec. 889 is currently subject to additional procurement bans beyond the named-entity list — consult legal counsel before bidding on federal contracts.]",
      "target_standards": [
        {
          "name": "OCP Cooling Environments — Liquid Cooling Specifications",
          "type": "Industry Specification (De-Facto Commercial Requirement)",
          "mandatory": false,
          "notes": "Open Compute Project publishes interoperability specs for rack-level and facility-level liquid cooling under the Cooling Environments project (formerly Advanced Cooling Solutions / ACS, now consolidated). Hyperscaler RFQs increasingly reference OCP conformance. Not a law but a practical gate for hyperscaler sales. [UNVERIFIED: specific OCP liquid cooling spec version and conformance testing process as of 2026.]",
          "source": {
            "url": "https://www.opencompute.org/projects/cooling-environments",
            "publisher": "Open Compute Project (OCP)",
            "accessed": "2026-06-12",
            "verified": false
          }
        },
        {
          "name": "NDAA FY2019 Section 889 — Prohibition on Certain Telecommunications and Surveillance Equipment",
          "type": "Federal Law",
          "mandatory": true,
          "notes": "Applies to federal procurement and contractors receiving federal funds. Named entities: Huawei Technologies, ZTE Corporation, Hytera Communications, Hangzhou Hikvision Digital Technology, Dahua Technology, and their subsidiaries/affiliates. Does not currently name liquid cooling OEMs by name, but prime contractors must certify compliance and may conduct broader supply-chain reviews.",
          "source": {
            "url": "https://www.ecfr.gov/current/title-48/chapter-1/subchapter-H/part-52/subpart-52.2/section-52.204-25",
            "publisher": "Electronic Code of Federal Regulations (eCFR) — Federal Acquisition Regulation 52.204-25",
            "accessed": "2026-06-12",
            "verified": false
          }
        },
        {
          "name": "Executive Order 13873 (2019) — Securing the ICT Supply Chain / ICTS Rule (15 CFR Part 7)",
          "type": "Executive Order / Federal Regulation",
          "mandatory": false,
          "notes": "[UNVERIFIED] The ICTS rule empowers the Department of Commerce to block or impose conditions on ICT transactions involving foreign adversary entities. Whether data-center liquid cooling hardware falls within ICTS jurisdiction depends on whether it contains networking/communications components — consult legal counsel for specific product classification.",
          "source": {
            "url": "https://www.ecfr.gov/current/title-15/subtitle-A/part-7",
            "publisher": "Electronic Code of Federal Regulations (eCFR) — 15 CFR Part 7",
            "accessed": "2026-06-12",
            "verified": false
          }
        },
        {
          "name": "ASHRAE TC 9.9 — Thermal Guidelines for Data Processing Environments (5th Ed.)",
          "type": "Industry Guideline (Referenced by AHJs and Operators)",
          "mandatory": false,
          "notes": "ASHRAE TC 9.9 guidelines are widely referenced by data-center operators and increasingly cited by AHJs. Liquid cooling systems should demonstrate compliance with thermal envelope and coolant safety guidelines. Not a law, but non-compliance creates commercial and permitting friction. [UNVERIFIED: 5th edition release date and specific liquid cooling addenda as of 2026.]",
          "source": {
            "url": "https://datacom.ashrae.org",
            "publisher": "American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)",
            "accessed": "2026-06-12",
            "verified": false
          }
        }
      ],
      "china_equivalent": "China does not have a direct equivalent to OCP operator qualification for hyperscaler procurement — Chinese hyperscalers (Alibaba Cloud, Tencent, Huawei Cloud) run proprietary vendor qualification programs. For government data centers, GB/T 22239 (Baseline for Classified Protection of Cybersecurity, a.k.a. MLPS 2.0) and GB 50174-2017 govern facility and equipment requirements; supply-chain security for government procurement is addressed under the Cybersecurity Law (2017) and Data Security Law (2021). There is no direct CN analog to NDAA Section 889 restrictions targeting specific foreign entities for data-center hardware.",
      "china_standards": [
        {
          "name": "GB/T 22239-2019 — Baseline for Classified Protection of Cybersecurity (MLPS 2.0)",
          "type": "Mandatory National Standard (for government/critical-infrastructure data centers)",
          "mandatory": true,
          "notes": "Governs cybersecurity and supply-chain requirements for classified data centers in China. Functional analog to federal data-center security frameworks in the US, but does not restrict foreign vendors by national origin in the same way NDAA does.",
          "source": {
            "url": "https://std.samr.gov.cn/",
            "publisher": "State Administration for Market Regulation (SAMR) — National Standards Database",
            "accessed": "2026-06-12",
            "verified": false
          }
        }
      ],
      "gap": "Two distinct gaps exist for Chinese liquid cooling manufacturers targeting US commercial and government data centers: (1) Commercial gap — OCP operator qualification and hyperscaler vendor audits are de-facto requirements with no CN equivalent pathway. A Chinese OEM must independently complete OCP conformance testing and pass each hyperscaler's vendor qualification process, which typically includes factory audits, performance benchmarking, and cybersecurity assessments. (2) Federal/government gap — NDAA Section 889 and broader ICTS supply-chain rules create heightened scrutiny for Chinese-origin hardware in federal procurement. Even if a product is not sold by a named entity, prime contractors may require written certification of no covered-entity components throughout the supply chain. The combination means Chinese liquid cooling OEMs face both technical qualification barriers (OCP) and geopolitical supply-chain scrutiny (NDAA/ICTS) in the US government segment — two hurdles with no parallel in the Chinese domestic market.",
      "mandatory_status": {
        "target": "OCP qualification: Not mandatory by law — de-facto commercial requirement for hyperscaler sales. NDAA Sec. 889: Mandatory for all federal contractors and subcontractors. ASHRAE 9.9: Not mandatory by law — referenced by AHJs and operators.",
        "cn": "No equivalent to OCP qualification. MLPS 2.0 mandatory for classified government data centers. No equivalent to NDAA named-entity procurement ban."
      },
      "verdict": "[INFORMATIONAL] Informational only. For commercial hyperscaler sales: engage with OCP conformance process and each target operator's vendor qualification program before production scale-up — these are de-facto gates. For US government / federal sales: obtain qualified legal advice on NDAA Section 889 scope and ICTS rules before bidding; even if not a named entity, supply-chain certification requirements are extensive. ASHRAE TC 9.9 thermal compliance should be documented as standard practice. This row reflects the regulatory and commercial landscape as understood in mid-2026; supply-chain rules are actively evolving and require ongoing monitoring.",
      "source": {
        "url": "https://www.opencompute.org/projects/cooling-environments",
        "publisher": "Open Compute Project (OCP)",
        "accessed": "2026-06-12",
        "verified": false
      }
    },
    {
      "id": "dccoolus-safety-nrtl-electrical",
      "requirement": "NRTL Electrical Safety Listing — UL 62368-1 / UL 60335",
      "target_requirement": "Data-center liquid-cooling equipment (cold plates, coolant distribution units / CDUs) sold for US workplace or permitted installations is typically expected by AHJs and customers to carry a listing mark from an OSHA-recognized Nationally Recognized Testing Laboratory (NRTL). ICT-facing electrical components of the CDU (controls, power supply, fans, pumps driven by low-voltage electronics) may be evaluated against UL 62368-1 (Audio/Video, Information and Communication Technology Equipment — Safety Requirements) as an NRTL evaluation route. UL/CSA 62368-1 3rd Edition remains the primary NRTL listing route for US market purposes; the 4th Edition was published July 2025 and NRTLs may begin accepting it for new listings — the transition is underway but no mandatory US cutover date has been set. CDU refrigerant sub-assemblies incorporating vapor-compression or heat-pump circuits are commonly evaluated under UL/CAN/IEC 60335-2-40 (Heat Pumps, Air-Conditioners and Dehumidifiers), not UL 60335-2-41. Non-refrigerant pump-only sub-assemblies may fall under UL 60335-2-41 (Pumps) but this is uncommon for CDU designs — confirm scope with the NRTL before testing. Hermetic motor-compressors are evaluated under UL 60335-2-34. OSHA recognises NRTLs under 29 CFR 1910.7; accepted NRTLs include UL, CSA, Intertek (ETL), and TUV SUD.",
      "target_standards": [
        "UL 62368-1 Ed. 3 — Audio/Video, IT and Communication Technology Equipment Safety (current NRTL listing standard; Ed. 4 published July 2025, transition underway — no mandatory US cutover date set yet)",
        "UL 60335-2-34 — Particular Requirements for Motor-Compressors (hermetic refrigerant pump sub-assemblies)",
        "UL/CAN/IEC 60335-2-40 — Particular Requirements for Heat Pumps, Air-Conditioners and Dehumidifiers (CDU refrigerant/vapor-compression sub-assemblies)",
        "UL 60335-2-41 — Particular Requirements for Pumps [non-refrigerant pump-only sub-assemblies; uncommon for CDU designs — confirm scope with NRTL]",
        "29 CFR 1910.7 — OSHA NRTL Recognition Program",
        "NEC Article 110.3(B) — Equipment listed by NRTL must be installed per listing and labeling instructions"
      ],
      "china_equivalent": "Chinese CDU and cold-plate manufacturers typically hold GB 4943.1 (Safety of IT Equipment, equivalent to IEC 60950-1) and/or GB/T 42315 (the Chinese adoption of IEC 62368-1) certifications issued by CCC-authorised labs (e.g. CCAI, CTI). Pump sub-assemblies may be assessed under GB 4706.70 (hermetic motor-compressors, aligned with IEC 60335-2-34). GB/T 51409-2021 (Technical Standard for Green Data Centers) and YD/T 2378 series address data-center cooling system performance but are not equipment-level safety standards. [UNVERIFIED: GB/T 42315 adoption status and whether CCC mark is mandatory for CDU exports — CCC is mandatory only for products in the CCC catalogue; CDUs may not be listed.]",
      "china_standards": [
        "GB 4943.1-2022 — Safety of Information Technology Equipment (aligned with IEC 60950-1 / partial IEC 62368-1 transition)",
        "GB/T 42315-2023 — Safety Requirements for Audio/Video, IT and Communication Equipment (IEC 62368-1 adoption) [UNVERIFIED mandatory status for CDUs]",
        "GB 4706.70-2008 — Particular Requirements for Hermetic Motor-Compressors (aligned with IEC 60335-2-34)",
        "GB/T 51409-2021 — Technical Standard for Green Data Center (performance, not equipment safety)",
        "YD/T 2378.1-2013 — Data Center Liquid Cooling System Technical Requirements"
      ],
      "gap": "US AHJs and data-center operators commonly require an NRTL listing mark (UL, ETL, CSA, etc.) issued by an OSHA-recognized lab. Chinese GB certifications and CCC marks are not recognised by US AHJs and cannot substitute for an NRTL listing or field evaluation. A Chinese manufacturer should engage an NRTL directly to determine the applicable product category and evaluate the product to UL 62368-1 (and UL 60335 sub-parts where applicable) before shipment. Additionally, the transition from IEC 60950-1 (GB 4943.1) to IEC 62368-1 (UL 62368-1 / GB/T 42315) means products certified only to the older Chinese standard may fail the current US standard's hazard-based safety engineering (HBSE) framework.",
      "mandatory_status": {
        "target": "Mandatory obligation comes from OSHA workplace rules, adopted electrical/building codes, and AHJ permit/inspection approval. UL 62368-1 and UL 60335 sub-parts are voluntary consensus standards used by NRTLs to evaluate products; they become required only when selected by the NRTL, incorporated by code/AHJ, or imposed by contract.",
        "cn": "Mandatory for CCC-catalogue products (CCC mark); GB 4943.1 / GB/T 42315 apply to IT equipment sold in China — mandatory status for CDU export products requires confirmation [UNVERIFIED]"
      },
      "verdict": "[INFORMATIONAL] Informational only. Chinese GB/CCC credentials are not accepted by US AHJs as substitutes for NRTL listing or AHJ field evaluation. Manufacturer should contract an OSHA-recognized NRTL to identify the applicable listing category and evaluate the CDU/cold-plate system, commonly to UL 62368-1 Ed. 3 (Ed. 4 published July 2025 — transition underway; confirm which edition the NRTL is accepting at time of engagement), and to UL/CAN/IEC 60335-2-40 for refrigerant sub-assemblies (not 60335-2-41). Final installability depends on the adopted code and AHJ approval. This is not legal or regulatory advice.",
      "source": {
        "url": "https://www.osha.gov/nationally-recognized-testing-laboratory-program",
        "publisher": "OSHA — Nationally Recognized Testing Laboratory (NRTL) Program",
        "accessed": "2026-06-12",
        "verified": false
      }
    },
    {
      "id": "dccoolus-safety-ashrae-nec-pressure",
      "requirement": "ASHRAE TC 9.9 Liquid-Cooling Guidelines, NEC Electrical Install & ASME Pressure Vessels",
      "target_requirement": "Three complementary US requirements govern liquid-cooling system installation in data centers beyond the equipment safety listing: (1) ASHRAE TC 9.9 Liquid Cooling Guidelines for Datacom Equipment — an industry best-practice document (not a law) widely adopted by hyperscale and co-location operators as a contractual or procurement requirement; it specifies coolant supply temperatures, pressure, flow rates, leak detection, and secondary-loop design for direct liquid cooling (DLC) and rear-door heat exchangers (RDHx). (2) NEC (NFPA 70) governs all electrical wiring and connections of the CDU to facility power where adopted by the jurisdiction; relevant articles include 110 (general requirements), 300 (wiring methods), and 645 (information technology equipment rooms). Installation must be performed or supervised by a licensed electrician and inspected by the AHJ. (3) State boiler and pressure-vessel laws or AHJ rules may require ASME BPVC Section VIII Division 1 stamping if the CDU contains qualifying pressure vessels (e.g., expansion tanks, high-pressure refrigerant receivers) above applicable pressure/dimensional thresholds. [UNVERIFIED: whether typical CDU operating pressures and vessel dimensions trigger state/AHJ stamping requirements — confirm with mechanical engineer and AHJ.]",
      "target_standards": [
        "ASHRAE TC 9.9 — Liquid Cooling Guidelines for Datacom Equipment Centers (industry best practice, not law)",
        "NFPA 70 / NEC 2023 Article 110 — General Requirements for Electrical Installations",
        "NFPA 70 / NEC 2023 Article 300 — Wiring Methods and Materials",
        "NFPA 70 / NEC 2023 Article 645 — Information Technology Equipment",
        "ASME BPVC Section VIII Division 1 — Rules for Construction of Pressure Vessels (used where state law or AHJ rules require ASME-stamped qualifying vessels)"
      ],
      "china_equivalent": "Chinese data-center liquid cooling practice is governed by GB/T 51409-2021 (Technical Standard for Green Data Centers), which includes liquid-cooling system design requirements for CDUs, cold plates, and coolant loops. YD/T 2378.1-2013 (Data Center Liquid Cooling System Technical Requirements) provides telecom-sector specific guidance. Electrical installation in Chinese data centers follows GB 50174-2017 (Code for Design of Electronic Information System Room) and GB 50054-2011 (Code for Design of Low-Voltage Electrical Installations). Pressure vessels in China are regulated under TSG 21-2016 (Safety Technical Supervision Regulations for Stationary Pressure Vessels), administered by the State Administration for Market Regulation (SAMR); vessels above specified thresholds require SAMR registration and periodic inspection. [UNVERIFIED: TSG 21 pressure threshold that triggers mandatory registration for CDU-scale vessels.]",
      "china_standards": [
        "GB/T 51409-2021 — Technical Standard for Green Data Center (includes liquid cooling system design)",
        "YD/T 2378.1-2013 — Data Center Liquid Cooling System Technical Requirements",
        "GB 50174-2017 — Code for Design of Electronic Information System Room",
        "GB 50054-2011 — Code for Design of Low-Voltage Electrical Installations",
        "TSG 21-2016 — Safety Technical Supervision Regulations for Stationary Pressure Vessels (SAMR)"
      ],
      "gap": "ASHRAE TC 9.9 is not law, but major data-center operators and co-location providers may incorporate it into contractual specifications; Chinese GB/T 51409 and YD/T standards are not recognised as substitutes by US operators. NEC electrical installation requirements must be met at the site level by US-licensed contractors where the NEC is adopted by the jurisdiction; Chinese GB 50174 / GB 50054 are irrelevant to US AHJ inspections. ASME BPVC stamping may be required by state boiler and pressure-vessel laws for vessels meeting US dimensional/pressure thresholds; Chinese TSG 21 registration does not satisfy US AHJ requirements. No mutual recognition agreement (MRA) exists between ASME and SAMR for pressure vessel certification.",
      "mandatory_status": {
        "target": "Mixed — adopted electrical/building codes and state boiler/pressure-vessel laws create the mandatory obligations. ASHRAE TC 9.9 is voluntary unless incorporated by contract, operator specification, permit condition, or AHJ requirement; ASME BPVC is a consensus code used to show compliance where state law or AHJ rules require ASME-stamped qualifying vessels.",
        "cn": "Mandatory — GB/T 51409-2021 is a national standard (recommended, not compulsory on its own, but referenced by mandatory regulations); TSG 21 pressure vessel registration is mandatory above specified thresholds under SAMR"
      },
      "verdict": "[INFORMATIONAL] Significant gaps exist across all three areas. Chinese exporters should: (1) verify whether target customers contractually require ASHRAE TC 9.9 coolant specifications; (2) ensure electrical connections comply with the NEC as adopted locally and are handled by a licensed US contractor at the installation site; (3) assess whether any CDU pressure vessel components require ASME BPVC Section VIII stamping under state law or AHJ rules. Chinese equivalent certifications (GB/T 51409, TSG 21, GB 50174) are not substitutes for US AHJ review or operator specifications. This is informational only and does not constitute legal or regulatory advice.",
      "source": {
        "url": "https://www.ashrae.org/technical-resources/bookstore/datacom-equipment",
        "publisher": "ASHRAE — Technical Committee 9.9, Mission Critical Facilities, Data Centers, Technology Spaces and Electronic Equipment",
        "accessed": "2026-06-12",
        "verified": false
      }
    }
  ]
}