66.18 Dispensing, Handling, Transfer, and Use of Liquids
- The vessels, containers, tanks, and piping systems shall be designed for such pressurized transfer and shall be capable of withstanding the anticipated operating pressure.
- Safety and operating controls, including pressure-relief devices, shall be provided to prevent overpressure of any part of the system.
- Only inert gas shall be used to transfer Class I liquids. Only inert gas shall be used to transfer Class II and Class III liquids that are heated above their flash points.
- The pressure shall be generated by means of a listed hand-operated device.
- Pressure shall not exceed a gauge pressure of 6 psi (41 kPa) and pressure relief shall be provided.
- The container shall not exceed 119 gal (450 L) and shall be capable of withstanding the maximum pressure generated by the device.
- The device shall be bonded and grounded or shall be demonstrated as not being capable of generating a static charge under any operating condition.
- The material of construction of the device shall be compatible with the liquid dispensed.
- Containers, intermediate bulk containers, and portable tanks that are in use
- Containers, intermediate bulk containers, and portable tanks that were filled during a single shift
- Containers, intermediate bulk containers, and portable tanks needed to supply the process for one continuous 24-hour period
- Containers, intermediate bulk containers, and portable tanks that are stored in accordance with Section 66.9
Exception No. 2: Intermediate products that are manufactured in the process area. [30:18.4.9]
- From original shipping containers with a capacity of 5.3 gal (20 L) or less
- From safety cans
- Through a closed piping system
- From portable tanks or containers by means of a device that has antisiphoning protection and that draws through an opening in the top of the tank or container
- By gravity through a listed self-closing valve or self-closing faucet
- * The amount required to supply incidental operations for one continuous 24-hour period, provided the hazard analysis required in Section 66.6 accounts for these quantities
- The aggregate sum of the quantities provided in Table 18.104.22.168
|Liquid Class(es)||Open Use||Use — Closed Containers|
|IB and IC||30||115||120||460|
Quantities are permitted to be increased 100 percent where stored in approved flammable liquids storage cabinets or in safety cans. Where note (2) also applies, the increase for both notes is permitted to be applied accumulatively.
Quantities are permitted to be increased 100 percent in buildings equipped throughout with an approved automatic sprinkler system installed in accordance with NFPA 13. Where Note (1) also applies, the increase for both notes is permitted to be applied accumulatively. [30:18.5.4]
- Separation from other operations where potential ignition sources are present by distance or by fire-resistant construction
- Drainage or other means to control spills
- Natural or mechanical ventilation that meets the requirements of 66.17.11