The professional body for whole life management of physical assets

About the Endorsed Assessors Scheme

The IAM believes that organisations will realise business benefits from their assets through the development and implementation of asset management (AM) systems that conform to the requirements of ISO 55001 and/or BSI PAS 55.

Although organisations can implement AM systems by themselves, there are benefits in using an independent third party to assess the extent of conformance. This can be:

  1. A gap analysis to understand the work which needs to be done for the management system to conform with all the requirements, and
  2. if desired, when conformance to the requirements is achieved, for this to be demonstrated by an assessor issuing a certificate.

In practice, however, anybody can declare themselves to be a Certification Body and issue a certificate of conformity for an ISO management system standard (such as ISO 55001) or specification (like PAS 55). So… how can organisations, and their stakeholders, have confidence in the competence and capability of organisations offering assessment and certification services?

It was for this reason that the IAM originally set up its Endorsed Assessor (EA) scheme for PAS 55. The IAM believed it was important to assist any potential Client to find and access suitable and reputable assessment providers that could deliver relevant, good quality asset management assessments using knowledgeable assessors. 

Endorsement as an EA can cover assessment against ISO 55001 and/or PAS 55 for gap analysis and/or certification. The IAM assesses applicants against the requirements of the EA scheme, and if they are successful appoints them to the status of Endorsed Assessor.

The IAM plans to continue running the EA scheme even though National Accreditation Bodies are establishing ISO 55001 accreditation schemes for Certification Bodies. One of the reasons, is that these accreditation schemes are only designed for Certification Bodies. They are not for assessors that only wish to offer assessment for gap analysis. The IAM believes that assessors undertaking gap analysis should have the same competence in asset management and auditing as those involved in certification assessments. The IAM’s EA scheme can provide this assurance.

If your organisation is seeking certification against ISO 55001, and would prefer this to be undertaken by an Accredited Certification Body, you should be able to source these via National Accreditation Bodies, such UKAS for the United Kingdom (Link to UKAS Accredited ISO 55001 Certification Bodies)

If you wish to understand the EA scheme in greater detail, you will need to read the documents in the window to the right titled ‘Related Documents’. We recommend that you start with ‘The Endorsed Assessor Scheme’ to get an overview of the scheme, then the EA Code of Practice to understand the assurances that are required of EAs, after that the EA Scheme Requirements document which identifies specific requirements (such as competence) with which EAs must comply. To understand all the information which an EA must provide to the IAM, it is essential that you read the EA Scheme application form.

The EA Scheme FAQ document provides responses to a number of questions that the IAM has been asked – ranging from general questions about the conformity assessment of management systems, to specific questions about aspects of the EA Scheme.

If you have a question which is not addressed in the Scheme documents or FAQs please email your query to

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