Nuclear power plant operation -- revision of seven Safety Guides (Safety Guides, Step 7) (DS497) COMMENTS BY REVIEWER RESOLUTION Reviewer: Lori Brownell (DOE/NNSA) & Richard Hale (ORNL) Page 1 of 1 Country/Organization: U.S.A. (DOE/NNSA) Date: 10/4/2018 Comment No. Para/Line No. Proposed new text Reason Accepted Accepted, but modified as Rejected Reason for follows modification/rejection 497(3) page 2.5. The operating organization should There may be regulatory 13 examine the various functions that are requirements as to needed for safe operation of a nuclear staffing at the facility that power plant; it should decide which would superceded functions should be performed (a) at the operating organization plant site, (b) off the site but within the preferences. operating organization, or (c) outside the operating organization. 497(3) page the need to ensure that systems and Modified from the draft 14 components are available to cool the text to include reference fuel and contain the radioactive to design basis accident material during all operational states, conditions which are the and design basis accident regulatory requirements. conditions. 497(1) 5.3. The following are typical The list that follows this parameters, operational occurrences description looks like it is and protective system devices for prescriptive rather than which safety system settings are notional. I would necessary. Note that the settings may be provide a reference so different in different plant states. For that its source and intent example, at a low operating can be determined temperature, the relief system for the reactor pressure vessel may necessitate lower pressure settings.
Nuclear power plant operation -- revision of seven Safety Guides (Safety Guides, Step 7) (DS497) COMMENTS BY REVIEWER Reviewer: Lori Brownell (DOE/NNSA) & Richard Hale (ORNL) Page 1 of 1 Country/Organization: U.S.A. (DOE/NNSA) Date: 10/4/2018 RESOLUTION Comment No. Para/Line No. Proposed new text Reason Accepted Accepted, but modified as follows Rejected Reason for modification/rejection 497(3) page 13 2.5. The operating organization should examine the various functions that are needed for safe operation of a nuclear power plant; it should decide which functions should be performed (a) at the plant site, (b) off the site but within the operating organization, or (c) outside the operating organization. There may be regulatory requirements as to staffing at the facility that would superceded operating organization preferences. 497(3) page 14 the need to ensure that systems and components are available to cool the fuel and contain the radioactive material during all operational states, and design basis accident conditions. Modified from the draft text to include reference to design basis accident conditions which are the regulatory requirements. 497(1) 5.3. The following are typical parameters, operational occurrences and protective system devices for which safety system settings are necessary. Note that the settings may be different in different plant states. For example, at a low operating temperature, the relief system for the reactor pressure vessel may necessitate lower pressure settings. The list that follows this description looks like it is prescriptive rather than notional. I would provide a reference so that its source and intent can be determined
CommentFormDS497U.S.A.docx