Brief R S, Scala R A
Am Ind Hyg Assoc J. 1975 Jun;36(6):467-9. doi: 10.1080/0002889758507272.
Work schedules other than 7 to 8 hr/day and 40 hr/week are being introduced in many industrial operations. Novel work schedules, such as four 10-hour workdays per week or three 12-hour workdays per week for three weeks followed by four 12-hour workdays for three weeks and several other plans are presently being used. The Threshold Limit Values (TLV) do not apply to such novel schedules. Modified occupational limits, which are calculable from the methods suggested in this report, estimate the needed reduction in the TLV to provide protection for exposed workers. A simple system is suggested, but should be cautiously applied with good medical surveillance. Industrial hygiene experience with novel work schedules will ultimately provide the real requirements for acceptable exposures under such work conditions.
许多工业企业正在采用每周工作时间不是7至8小时/天和40小时/周的工作时间表。目前正在使用一些新颖的工作时间表，例如每周四个10小时工作日，或每周三个12小时工作日，持续三周，之后是每周四个12小时工作日，持续三周，以及其他一些方案。阈限值（TLV）并不适用于此类新颖的工作时间表。根据本报告中建议的方法可计算出的经修改的职业接触限值，可估算出为保护接触工人所需降低的阈限值。文中提出了一个简单的系统，但应在良好的医疗监督下谨慎应用。关于新颖工作时间表的工业卫生经验最终将提供此类工作条件下可接受接触的实际要求。
