Design and Engineering Manual 1 (DEM1) is a supporting document for the AI-PSM process. It includes a list of Design and Engineering Practices (DEP) and other engineering documents that specify the mandatory requirements needed to manage Process Safety risks during design and construction. CP-117 PDO, Project Engineering Code of Practice,requires all new assets and modifications to existing assets to be designed and constructed in accordance with DEM1.
The purpose of DEM1 compliance is to define the technical standards for design and construction, which have a direct impact on Process Safety. GU-611, PDO Guide to Engineering Standards and Procedures, lists the DEM1 DEP and the PDO Standards applicable to PDO’s operations.
An SP or DEP is designated as DEM1-applicable if it contains a minimum of one statement relating to the prevention of, or the managing of the risks associated with, a Process-Safety-related incident and significantly contributes to a preventative control or mitigating measure for “Severity Five” or “High-Risk” hazards to People, Environment, Assets or Reputation. The “SHALL [PS]” statements that refer to hazards of “Severity Five” or “High-Risk” are mandated requirements.
”SHALL [PS]” statements are mandatory unless derogation is approved by the discipline CFDH (TA-1) or UED (delegated TA-0).“Shall” statements remain mandatory requirements but may be challenged on a project basis, subject to the rules of PR-1247, PDO, Project Management of Change Procedure.
The Project shall demonstrate compliance with the “SHALL [PS]” statements in the applicable DEM1 DEP and PDO Standards, and provide the documentary evidence. Where it is not possible to fully comply with the mandatory requirements set out in the standards and procedures, a Variance shall be raised and signed-off by the relevant CFDH, with variances maintained in a Variance Register.
CP-117 requires that all assets comply with the Process Safety Basic Requirements (PSBRs), as specified in DEM2.
The PSBRs are requirements derived from learning from past AI-PS accidents in the industry. The purpose of the PSBR is to prevent re-occurrence of known major Process Safety Incidents by focusing on their main causes and key barriers. All PSBRs are covered by various DEP, Standards (SP), Procedures (PR) and Codes of Practice (CoP). Compliance with these documents will ensure that all PSBR requirements are met by default.
However, every project must be able to demonstrate through the HSE Case that the relevant PSBRs are specifically met, prior to the introduction of Hydrocarbons. Compliance in PDO with PSBRs in project is required by CP-117 and supported by the application of GU-648, PDO, Guide for Applying Process Safety in Project.
PSBRs compliance applies to assets that have process hazards with PDO RAM Red or Yellow 5B Risks and that are used for exploring, drilling, Producing, processing, transporting or storing hazardous substances or energy. The Asset Manager is accountable for ensuring compliance with the PSBR.
DEM-1 & DEM-2 compliance demonstration is a part of the AI-PSM compliance report.