https://externalhazards.epri.com/index.php?action=history&feed=atom&title=Industry_Experience%2FExtreme_TemperatureIndustry Experience/Extreme Temperature - Revision history2026-07-02T01:36:10ZRevision history for this page on the wikiMediaWiki 1.39.8https://externalhazards.epri.com/index.php?title=Industry_Experience/Extreme_Temperature&diff=88&oldid=prevAdmin: 1 revision imported2026-06-09T22:29:36Z<p>1 revision imported</p>
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</td></tr></table>Adminhttps://externalhazards.epri.com/index.php?title=Industry_Experience/Extreme_Temperature&diff=87&oldid=prev10.1.236.152: v1.0 placeholder — detailed content coming in v1.12026-06-01T20:44:45Z<p>v1.0 placeholder — detailed content coming in v1.1</p>
<p><b>New page</b></p><div><!-- PAGE METADATA<br />
page_type: industry_experience<br />
page_id: INDUSTRY_EXPERIENCE_EXTREME_TEMPERATURE<br />
canonical_hazard_id: EH-ATM-EHT<br />
related_hazard_ids: EH-ATM-ECL, EH-BIO-DRT, EH-BIO-FOL, EH-BIO-CLM<br />
authoritative: false<br />
revision_date: 2026-05-07<br />
status: placeholder_v1.0<br />
summary: Industry operating experience for extreme temperature events at nuclear power plants, including shutdowns and derates driven by high cooling water temperatures and environmental discharge limits.<br />
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<span style="background:#8E7CC3; padding:3px 14px; border-radius:12px; font-size:80%; font-weight:bold; letter-spacing:1px;">[[Industry_Experience|<span style="color:#FFF;">INDUSTRY EXPERIENCE</span>]]</span><br />
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'''Extreme Temperature — Industry Experience'''<br />
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Among external hazards, extreme temperature events have historically produced operational consequences, such as power derates, planned shutdowns, and limiting conditions for operation, rather than safety-significant consequences. The most consequential and recurring operational experience involves elevated ultimate heat sink (UHS) water temperatures that approach or exceed thermal discharge limits imposed by environmental regulations. High UHS temperatures can also challenge dependent cooling systems, and low temperatures can cause icing and freeze damage to sensitive outdoor equipment.<br />
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{{#tag:div|'''MORE INFO COMING SOON''' — This page is under active development. Detailed content will be available in an upcoming update to the External Hazards Knowledge System.|style=background:#E8F4FD;color:#1B4F72;padding:16px;border:2px solid #85C1E9;border-radius:8px;font-size:110%;margin:24px 0;text-align:center;}}<br />
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''Return to [[Industry Experience]].'' | ''EPRI technical point of contact: Chris Rochon ([mailto:CRochon@epri.com CRochon@epri.com])''<br />
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''Date last reviewed: 2026-05-07''</div>10.1.236.152