ISO 14001 sample selection and audit planning

"what questions to ask management when planning the audit?”

Answer:

ISO 14001:2015 requests top management example, commitment, and leadership. Think about auditing top management about management review, environmental policy and objectives, compliance evaluation results, context, risks, and strategic orientation. I wrote this article about the topic of auditing top management - How to perform an ISO 9001 audit of top management without fear - https://advisera.com/9001academy/blog/2019/05/15/iso-9001-top-management-audit-how-to-perform-it-successfully/ - perhaps it can be useful for you.

What system to use to select sample or anyone can just select sample he/she think is right?

Answer:

An auditor may choose between a statistical and a nonstatistical approach to audit sampling. Normally, during internal audits, you don’t need to follow a standard like ISO 28590 to determine sample size. You need to pick a sample not biased, for example, if you are auditing environmental practices of an organization that works 24 hours a day, the audit also the night shift. And you need to pick a sample size that gives you confidence for a conclusion. If you have 20 containers for segregating wastes, you don’t just check one to conclude that everything is OK or NOK.

You can find practical information in the links below:

• Internal Audits in the EMS: Five Main Steps - https://advisera.com/14001academy/blog/2019/08/27/key-iso-14001-benefits-to-customers/nowledgebase/internal-audits-in-the-ems-five-main-steps/
• Free webinar on-demand - How to perform an ISO 14001:2015 internal audit - https://advisera.com/14001academy/webinar/how-to-perform-an-iso-14001-2015-internal-audit-free-webinar-on-demand/
• You can also attend this free course – ISO 14001:2015 Internal Auditor Course - https://advisera.com/training/iso-14001-internal-auditor-course/
• Book - ISO internal audit: A plain English guide: https://advisera.com/books/iso-internal-audit-plain-english-guide/