Since risk assessments must assess the existing control measures, they should also consider information regarding: x Manning and supervision (see section 5.9 below); x Type and reliability of controls and the integrity of safety-related systems; x Additional controls for remote or unsupervised boiler operation. Risk assessments must be reviewed periodically, after any accident or incident, and when there is a significant change e.g. a system variation, change in operating parameters or manning levels etc. The outcome of any reviews must be recorded. As an example, an owner moving to a lower level of supervision of the boiler shall, as a first step, review the boiler design and the current risk assessment to take account of the planned change in manning levels. The results of the risk assessment will be used to determine any measures necessary to ensure that the boiler remains safe to use and to operate. Such measures may include: x The proper formulation and correct application of all modifications and installations to ensure they have sufficient safety integrity to adequately mitigate the risk of a dangerous occurrence; x Amendment of procedures where appropriate to ensure the plant continues to be operated safely; x Ensuring all personnel on-site & off-site and in surrounding property remain safe. 4.2 Written scheme of examination (WSE) The requirement for a WSE is set out in Regulation 8 of PSSR. The user/owner is ultimately responsible for ensuring that the scope of the WSE covers all relevant parts of the boiler system, and they should select an organisation with sufficient knowledge and expertise on the systems in question to carry out the CP duties on that system. The CP role and responsibilities are covered in the PSSR ACoP. A brief summary is provided in section 5.3 below. The WSE must include the name of the CP who certified the scheme as suitable, the date of the certification, and the following information: x All parts which require examination by the CP; x Justification for excluding items from examination; x All protective devices; x The nature and frequency of the examinations required; x Details of any preparatory work required by the user/owner in order for the examinations to be completed; x Details of any requirements for the initial examination; x Details of any repairs and modifications where the CP needs to be involved. Where there is more than one WSE for a single pressure system, (e.g. one for the boiler house and another covering the site) or there are hired boilers brought to site, the respective responsibilities for each part of the pressure system must be clearly identified. The boundaries of each WSE must be adjacent to each other with no physical gaps.
BG01 Guidance on the safe Operation of Steam Boilers Edition 2 – © 2019
Page 12
Made with FlippingBook - Online catalogs