[en] A number of tubes were removed from Pickering Unit 8 due to excessive depth of fretting damage at dummy fuel bearing pad positions. Fifteen of these tubes were designated for destructive examination at three sites: AECL-CO, OHRD and CRNL. Examination of parts of six tubes from channels E08, F15, G10, J12, K18 and L14 were carried out at OHRD. The objective of the examination was to determine the extent of microcracking in the fret zones and to confirm the previously observed hydride distributions near fret marks. Results of the investigation show that there is no significant microcracking at the fret marks. However, secondary marks probably due to fretting by particles in the PHT coolant being trapped near bearing pads or under bundles, have been identified. These marks were studied in detail to determine their shapes for subsequent stress analysis. This report summarizes all these examinations

[en] A layman gives his impression of the sights and sounds of Pickering Nuclear Generating Station

[en] The paper describes the use of modern multi-head stud tensioning equipment during the April 1987 shutdown of Pickering 8, to achieve leak-tight channel-to-tubesheet joints in shutdown-cooling heat exchangers and moderator heat exchangers. The paper surveys the theory, describes the equipment and methodology, and reports the leak-tightness and manrem exposure results

[en] This paper is related to the Clearance Potential Index, Ingestion and Inhalation Hazard Factors of the nuclear spent fuel and radioactive wastes. This study required a complex activity that consisted of various phases such us: the acquisition, setting up, validation and application of procedures, codes and libraries. The paper reflects the validation phase of this study. Its objective was to compare the measured inventories of selected actinide and fission products radionuclides in an element from a Pickering CANDU reactor with inventories predicted using a recent version of the ORIGEN-ARP from SCALE 5 coupled with the time dependent cross sections library, CANDU 28.lib, produced by the sequence SAS2H of SCALE 4.4a. In this way, the procedures, codes and libraries for the characterization of radioactive material in terms of radioactive inventories, clearance, and biological hazard factors are being qualified and validated, in support for the safety management of the radioactive wastes. (authors)

[en] This paper describes the development of a telescopic ram and its control system. The ram is a sub-assembly of the SLAR Delivery Machine, which is a modified fuelling machine, required for SLAR at the Pickering 'B', Pt. Lepreau, and Gentilly II nuclear facilities

[en] During the immature operation of the Pickering Units 5 through 8, significant numbers of outages have been required to deal with warranty inspections and equipment problems. Techniques have been developed to ensure that outages are properly planned and managed so that outage time is minimized, overtime is minimized, and capacity factor is maximized, while ensuring that personnel safety is not compromised. Successful outage planning and execution requires the commitment of many on-station and off-station resources groups. Coordination of all of these groups is required both before and during the outage to ensure outage time is not lost due to unavailability of men or equipment at the time they are required. This paper details the control processes that must be used prior to, during, and after an outage to ensure that time is not lost unnecessarily during outages. Successful outage management at Pickering Nuclear Generating Station can be subdivided into three stages; preoutage planning, outage execution, and postoutage review

[en] Some highlights of the survey are as follows. In 1985 Canadian uranium production was 10,870 tonnes, 30% of that of the Western world. The Key Lake uranium mine is now the world's largest. Point Lepreau station ranked second in 1985 among the world's 500-megawatt-plus reactors, with a capacity factor of 97.4%. Retubing of Pickering units 1 and 2 is proceeding satisfactorily. Pickering 8 and Bruce 7 went commercial in 1986, with Bruce 8 scheduled for early 1987. The radiation dose to Canadian workers per unit of nuclear electricity produced has declined 70-fold in the period 1970-1985. The final reports of the interfaith hearings acknowledged that nuclear energy is no different ethically from any other form of energy

No abstract available

[en] A summary is presented of thoughts relative to a systems approach for implementing international safeguards. Included is a preliminary analysis of the Pickering Generating Station followed by a suggested safeguards system for the facility

[en] The operation of Pickering NGS-A Units 1-4 and Pickering NGS-B Units 5-8 are monitored to ensure compliance with licensing requirements by the AECB Pickering project office staff. This report presents AECB staff's review of major licensing issues and of the operational performance of Pickering NGS during 1988. The report is limited to those aspects that AECB staff considers to have particular safety significance. More detailed information on routine performance is contained in Ontario Hydro's 1988 Quarterly Technical Reports for Pickering NGS-A and Pickering NGS-B