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Mounds View – Ferrellgas Plan Review <br />Page 4 of 10 <br />October 1, 2007 <br /> <br />possible to verify that the relief valve sizing is adequate for this installation according to <br />NFPA 58 Table 5.7.2.5. Multiple pages of manufacturer’s data on relief valves were <br />provided with no indication as to which valve model, size, or flow rate is to be installed. <br />3. Tank Appurtenances – NFPA 58 allows a number of configurations for vapor and liquid <br />openings, yet the submission isn’t specific as to which option will be used. For example, <br />in the Incident Prevention Review Emergency Controls Section on Page 2, boxes #1 and <br />#4 are both checked, leading to confusion if internal valves will be used or external <br />emergency shutoff valves are. The generic tank installation details provided to show the <br />piping also show multiple combinations of valves forming code complying designs, thus <br />it isn’t clear WHICH option is used. Is it intended that the installation also complies with <br />the Ferrellgas Safety and Technical Support Policy Manual for Tank Installations? If so, <br />only internal valves are used, thus for tank openings the submission would appear to be <br />in substantial compliance with NFPA 58. <br />4. Piping – NFPA 58 Section 5.8 addresses piping and there is no information in the <br />submission on the type of pipe, tubing or hose used, construction materials, <br />specifications, etc. Is it intended that the installation also comply with the Ferrellgas <br />Safety and Technical Support Policy Manual for Tank Installations? If so, it appears the <br />submission would be in substantial compliance with NFPA 58. <br />5. Tank Separation Distances – As shown on the plot plan, a minimum 50 foot clearance is <br />provided to property lines, buildings, etc. and as a result is in substantial compliance with <br />NFPA 58 Section 6.3. <br />6. Separation Distances to Transfer Operations – Spacing requirements for points of transfer <br />contained in NFPA 58 Table 6.5.3 apply to the cylinder loading dock. If the office <br />building is constructed of anything other than minimum one-hour fire-resistive exterior <br />walls, it appears to be less than the 25 feet required by NFPA 58 Table 6.5.3 (B). <br />Similarly, the outside storage is too close to containers being filled and doesn’t provide <br />the minimum 10 foot separation required by NFPA 58 Table 6.5.3 (I) and Section <br />6.16.2.1. <br />7. Protection From Damage – No information was provided to review concerning protection <br />from damage as required by NFPA 58 Sections 6.6.1.2, 6.10.8 and MSFC Section 312 <br />(adequacy will need to be verified on site). <br />8. Container Support – No information was provided to review concerning container <br />support as required by NFPA 58 Section 6.6.3. Is it intended that the installation also <br />comply with the Ferrellgas Safety and Technical Support Policy Manual for Tank <br />Installations? If so, container supports would be in substantial compliance with NFPA 58. <br />9. Emergency Shut Off Valves and Remote Manual Shutoff Stations – are not shown on the <br />plot plan, thus compliance with NFPA 58 Section 6.10 will need to be verified on site. <br />Proper separation distances are indicated in the submission, but due to a lack of a <br />drawing showing their location, it isn’t possible to review the locations to assure they are <br />not blocked, are in the direction of egress, and are visible. <br />10. Electrical Equipment – No information on extent of electrically rated equipment, etc. was <br />provided, thus compliance with NFPA 58 Sections 6.16.4 and 6.20.2 could not be <br />verified (the Incident Prevention Review does indicate the electrical equipment and <br />wiring will be installed according to NFPA 58 and NFPA 70, however).