Use of Cutting This section provides guidance on the selection and use of cutting oil for threading, Oil for Cutting cutting, or grooving potable pipe within a plant, building, or other facility. and Threading Threading, cutting, or grooving of pipe for most work on your potable water system Pipe will be performed under the direction of the Licensed Plumber. However, at times personnel within your facility may thread, cut, or groove pipe when performing routine maintenance activities that are exempt from the Licensed Plumber requirement. Cutting oil is required to both cool and lubricate the cutting and threading dies. However, this cutting oil must be cleaned and removed before the pipe is placed into potable water service. There are no commercially-available cutting oils that are approved to remain as a coating on the pipe when placed back into potable water service. Even if you use cutting oil that is considered safe for human consumption (such as vegetable oil), the presence of an oil / water mixture in the lines would constitute a nuisance to plant staff due to objectionable taste, odor, and appearance. Continued on next page , Section 6: Maintenance Practices, Continued
Use of Cutting Oil for Cutting and Threading Pipe This section provides guidance on the selection and use of cutting oil for threading, cutting, or grooving potable pipe within a plant, building, or other facility. Threading, cutting, or grooving of pipe for most work on your potable water system will be performed under the direction of the Licensed Plumber. However, at times personnel within your facility may thread, cut, or groove pipe when performing routine maintenance activities that are exempt from the Licensed Plumber requirement. Cutting oil is required to both cool and lubricate the cutting and threading dies. However, this cutting oil must be cleaned and removed before the pipe is placed into potable water service. There are no commercially-available cutting oils that are approved to remain as a coating on the pipe when placed back into potable water service. Even if you use cutting oil that is considered safe for human consumption (such as vegetable oil), the presence of an oil / water mixture in the lines would constitute a nuisance to plant staff due to objectionable taste, odor, and appearance. Continued on next page , Section 6: Maintenance Practices, Continued
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