// CODE SNIPPET
69.4.2 Operational Safety
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Transfer operations shall be conducted by qualified personnel meeting the provisions of Section 4.4 of NFPA 58. [58:126.96.36.199]
At least one qualified person shall remain in attendance at the transfer operation from the time connections are made until the transfer is completed, shutoff valves are closed, and lines are disconnected. [58:188.8.131.52]
When noncompliance with Section 5.2 and Section 5.9 of NFPA 58 is found, the container owner and user shall be notified in writing. [58:184.108.40.206]
Valve outlets on refillable cylinders of 108 lb (49 kg) water capacity [nominal 45 lb (20 kg) propane capacity] or less shall be equipped with a redundant pressure-tight seal or one of the following listed connections: CGA 790, CGA 791, or CGA 810, as described in CGA V-1, Standard Compressed Gas Cylinder Valve Outlet and Inlet Connections. [58:220.127.116.11]
Where redundant pressure seals are used, they shall be in place whenever the cylinder is not connected for use. [58:18.104.22.168]
Containers shall be filled only after determination that they comply with the design, fabrication, inspection, marking, and requalification provisions of NFPA 58. [58:22.214.171.124]
"Single trip," "nonrefillable," or "disposable" cylinders shall not be refilled with LP-Gas. [58:126.96.36.199]
Containers shall comply with the following with regard to service or design pressure requirements:
- The service pressure marked on the cylinder shall be not less than 80 percent of the vapor pressure of the LP-Gas for which the cylinder is designed at 130°F (54.4°C).
- The maximum allowable working pressure (MAWP) for ASME containers shall be in accordance with Table 188.8.131.52 of NFPA 58.
Universal cylinders shall be permitted to be filled when in the vertical position or in the horizontal position when the positioning slot is in the correct orientation. [58:184.108.40.206]
Transfer of refrigerated product shall be made only into systems that are designed to accept refrigerated product. [58:220.127.116.11]
Transfer hoses larger than 1/2 in. (12 mm) internal diameter shall not be used for making connections to individual cylinders being filled indoors. [58:18.104.22.168]
Public access to areas where LP-Gas is stored and transferred shall be prohibited, except where necessary for the conduct of normal business activities. [58:22.214.171.124]
Internal combustion engines within 15 ft (4.6 m) of a point of transfer shall be shut down while such transfer operations are in progress, with the exception of the following:
- Engines of LP-Gas cargo tank vehicles, constructed and operated in compliance with Chapter 9 of NFPA 58, while such engines are driving transfer pumps or compressors on these vehicles to load containers in accordance with 126.96.36.199 of NFPA 58
- Portable engines with shielded ignition systems and exhaust system spark-arresters located at least 10 ft (3 m) from a point of transfer while such engines are driving transfer pumps or compressors
- Engines for industrial (and forklift) trucks powered by LP-Gas used in buildings as provided in Section 11.13 of NFPA 58
Metal cutting, grinding, oxygen-fuel gas cutting, brazing, soldering, or welding shall not be permitted within 35 ft (10.7 m) of a point of transfer while filling operations are in progress. [58:188.8.131.52(C)]
Materials that have been heated above the ignition temperature of LP-Gas shall be cooled before LP-Gas transfer is started. [58:184.108.40.206(D)]
Sources of ignition shall be turned off during the filling of any LP-Gas container on the vehicle. [58:220.127.116.11(E)]
Where the intake of air-moving equipment is less than 50 ft (15 m) from a point of transfer, it shall be shut down while containers are being refilled. [58:18.104.22.168(A)]
Equipment employing open flames or equipment with integral containers shall be shut down while refueling. [58:22.214.171.124(B)]
During the time railroad tank cars are on sidings for loading or unloading, the following shall apply:
- A caution sign, with wording such as "STOP. TANK CAR CONNECTED," shall be placed at the active end(s) of the siding while the car is connected, as required by DOT regulations.
- Wheel chocks shall be placed to prevent movement of the car in either direction.
Where a hose or swivel-type piping is used for loading or unloading railroad tank cars, it shall be protected as follows:
- An emergency shutoff valve shall be installed at the railroad tank car end of the hose or swivel-type piping where flow into or out of the railroad tank car is possible.
- An emergency shutoff valve or a backflow check valve shall be installed on the railroad tank car end of the hose or swivel piping where flow is only into the railroad tank car.
Where cargo tank vehicles are filled directly from railroad tank cars on a private track with nonstationary storage tanks involved, the following requirements shall be met:
- Transfer protection shall be provided in accordance with 69.3.10.
- Ignition source control shall be in accordance with Section 6.25 of NFPA 58.
- Control of ignition sources during transfer shall be provided in accordance with 126.96.36.199.2.
- Fire extinguishers shall be provided in accordance with 9.4.7 of NFPA 58.
- Transfer personnel shall meet the provisions of 188.8.131.52.
- Cargo tank vehicles shall meet the requirements of 184.108.40.206.
- The points of transfer shall be located in accordance with 220.127.116.11.1 with respect to exposures.
- Provision for anchorage and breakaway shall be provided on the cargo tank vehicle side for transfer from a railroad tank car directly into a cargo tank vehicle.
- The provisions of Chapter 15 of NFPA 58 shall apply to all LP-Gas transfers performed in accordance with 18.104.22.168.8.
Where cargo tank vehicles are filled from other cargo tank vehicles or cargo tanks, the following requirements shall apply:
- Transfer between cargo tanks or cargo tank vehicles where one is used as a bulk plant shall be temporary installations that comply with 4.3.2, 6.21.1, 6.21.2, 6.21.4 through 6.21.6 of NFPA 58, and 22.214.171.124.1.
- Arrangements and operations of the transfer system shall be in accordance with the following:
- The point of transfer shall be in accordance with Table 126.96.36.199.1.
- Sources of ignition within the transfer area shall be controlled during the transfer operation as specified in 188.8.131.52.2.
- Fire extinguishers shall be provided in accordance with 9.4.7 of NFPA 58.
- Cargo tanks shall comply with the requirements of 184.108.40.206.8.
- Provisions designed either to prevent a pull-away during a transfer operation or to stop the flow of products from both cargo tank vehicles or cargo tanks in the event of a pull-away shall be incorporated.
- Off-truck remote shutoff devices that meet 49 CFR 173.315(n) requirements and are installed on the cargo tank vehicle unloading the product shall satisfy the requirements of 220.127.116.11.9(4).
- Cargo tank vehicle LP-Gas transfers that are for the sole purpose of testing, maintaining, or repairing the cargo tank vehicle shall be exempt from the requirements of 18.104.22.168.9(1).
Hose assemblies shall be observed for leakage or for damage that could impair their integrity before each use. [58:22.214.171.124]
The hose assemblies specified in 126.96.36.199.1 shall be inspected at least annually. [58:188.8.131.52]
Inspection of pressurized hose assemblies shall include inspection for the following:
- Damage to outer cover that exposes reinforcement
- Kinked or flattened hose
- Soft spots or bulges in hose
- Couplings that have slipped on the hose, are damaged, have missing parts, or have loose bolts
- Leakage other than permeability leakage
Hose assemblies shall be replaced, repaired, or continued in service based on the results of the inspection. [58:184.108.40.206]
Leaking or damaged hose shall be immediately repaired or removed from service. [58:220.127.116.11]
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