---
id: 20251030141936
title: Emergency Operating Procedures
type: permanent
created: 2025-10-30T18:19:36Z
modified: 2025-10-30T19:30:12Z
tags: []
---

# Emergency Operating Procedures
Emergency operating procedures for nuclear power are special
procedures that are used when off-normal conditions are
present. They are for when 'shit hits the fan'. 

EOPs have defining regulations. Most notably [[nureg899]].
NUREG899 is a writers guide to emergency operating
procedures.

EOPs should be 'function-oriented'. This means operators
should not need to know a root cause to start performing
control operations in an emergency. Critical functions in an
emergency are usually:

1. [[Containment Integrity]]
2. [[Reactivity Control]]
3. [[Heat Removal]]
4. [[Reactor Coolant Inventory Control]]

If each of these are maintained, the reactor can be 'safe',
and the risk of environmental release is minimized. [[nureg899]]

EOPs should minimize cross referencing because it increases
decision time and is disruptive changing between documents
[[nureg899]].

EOPs today are reveiwed with simulation exercises,
control-room walkthroughs, seminars, and numerical analysis
[[nureg899]].