Emergency categories

ISO 14001:2015 does not provide either in the text of the standard (Clause 8.2) or in its annex (A.8.2) any requirement for the classification of emergency situations in categories. ISO 14001:2015, clause 8.2 c) provides some guidance for the need to classify each emergency situation. Each organization should define what is the best technique for doing that. Once I worked at a chemical industry manufacturing plant with high environmental impacts associated to emergency situations. We used categories because they were very useful to communicate standardized response actions to everybody in the plant, easily and without going into details. 

The following material will provide you more information about emergency situations:

5 steps to set up an emergency plan according to ISO 14001 - https://advisera.com/14001academy/blog/2014/07/23/5-steps-set-emergency-plan-according-iso-14001/
ISO 14001 emergency preparedness and response - https://advisera.com/14001academy/blog/2019/08/27/key-iso-14001-benefits-to-customers/nowledgebase/iso-14001-emergency-preparedness-and-response/
Environmental aspect identification and classification - https://advisera.com/14001academy/blog/2019/08/27/key-iso-14001-benefits-to-customers/nowledgebase/environmental-aspect-identification-and-classification/
Free webinar - Free webinar - ISO 14001: Identification and evaluation of environmental aspects - https://advisera.com/14001academy/webinar/iso-14001-identification-and-evaluation-of-environmental-aspects-free-webinar-on-demand/
Enroll for free in this course – ISO 14001:2015 Foundations Course - https://advisera.com/training/iso-14001-internal-auditor-course/
Book – The ISO 14001:2015 Companion - https://advisera.com/books/the-iso-14001-2015-companion/