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Transactions within CO Certification process

Within the process in the CO system, 5 sub-transactions are named. For two of the transactions, a digital message is currently being developed to exchange information in a standardized manner (T1.0 and T2.0).

CO CertificationDigital message
Commissioning notification
T1.0Commissioning notification of gas combustion plant for CO certificationyes
T1.1Commissioning request messageno
T1.2Detail message commissioning gas combustion plant for CO certificationno
Unsafe situation
T2.0Message of unsafe situation, (near) CO casesyes
T2.1Message of violation of building regulations (unsafe situation) to competent authorityno

Figure: Overview transactions

Two processes can be distinguished, Namely

Process -> Notification unsafe situation

Process -> Commissioning device

While these two messages have a connection within the CO system, in practice they are actually separate.

Example 1:

Engineer arrives on site and observes an unsafe situation.

Example 2:

Engineer arrives on site, repairs and reports plant in operation.

T1.0 - Transaction Commissioning

It is prescribed that an installation company report completed work and commissioning to the CB where it is certified. In this way, the CB can perform spot checks on the company's work. The figure shows schematically how this process works. In this case, the report can also be made available to the housing corporation by the commissioning company. In this way, the data is used in two places, after which it can be fed back to one or more residents.

Commissioning Messagestructure
Figure: Transaction Commissioning

T2.0 - Transaction Unsafe Situation

The transaction describes a report of an unsafe situation that occurred during the commissioning of an installation.

Unsafe Situation
Figure: Transaction Unsafe Situation

Additional Information CO Certification

InstructionNumber field

The field <InstructionNumber> is mandatory in both transactions. And it is the instruction number obtained to do the Commissioning or resolve an UnsafeSituation.

Attachment Structure Unsafe Situation

Two attachments are required to be included in the Unsafe Situation. The attachments must contain a photo before recovery and a photo after recovery. For this you use the attachment structure. Multiple before and after photos can also be included.

Relation Unsafe Situation and Commissioning

The Unsafe Situation is a technical extension of the Commissioning. This is useful when implementing both processes. Line-level additions in the Unsafe Situation are:

[2..n] Attachment
[0..1] Location
[1..1] DeviceInformation
[1..1] UnsafeSituation

Description fields

The description fields in the CommissioningNotice and UnsafeSituationNotice are multilingual. So you can include multiple languages. This process is based on the Dutch sector and the agreement is that <LanguageCode> "NL" is used.

OpenAPI

This part of the standard is accessed via OpenAPI. The information is in JSON schemas based on the DICO Data Model.

Difference in handling codelists

There are also technical DICO Messages within the Standard where codelists are placed externally. This is the case for the SALES005 XML messages within the DICO Standard. In these OpenAPI specifications, the codes are hardcoded.