The Gauge One Model Railway Association
Visitors (guest steamers):
Gas filling and Risks
We used to, and still do, fill the gas tanks on our engines directly from the gas cylinder. Some times we need an extension. This is a safe way because the moment the pressing down of the gas cylinder stops, the gas flow stops too. Now, I very often see gas cylinders with a valve, and a tube with a plug-and-socket connection an the end. This maybe quicker but if the tube breaks, you have to close two valves by hand while the gas escapes from two places at once. Also, if the tube has a small hole, you don’t know you have a leakage, and the gas can run along the line. The filling is normally done within a close range of open fire, others rising steam or a passing engine. Therefore, I see this as a very big risk, especially at G-t-G, and when children press their nose onto the side board of the layout.
I would like to bring this up for discussion, maybe we can find a solution together.
Willi, Kleinbasel, Switzerland
Anyone intending to travel to the United Kingdom for the purpose of running a locomotive at a public event there requires a boiler test certificate. Preprinted forms can be ordered here.
Testing regulations for gauge 1 steam locomotive boilers,
A. Hydraulic test
1. Commercially manufactured boilers and tanks are initially tested by the manufacturer. He is liable for the latter within the framework of product liability.
2. The integrity of boilers built by the owner or by the builder of the locomotive must be tested by a third person experienced in boiler construction. Boiler pressure tests are carried out using cold water at twice the operating pressure. All boiler fittings except for the pressure gauge and the safety valves are fitted to the boiler during this pressure test.
3. This test procedure also applies to LPG tanks.
B. Testing the loco under steam
Locomotives must be tested under steam before any track running is envisaged. This test also checks the correct operation of the safety valves. Additional checks are carried out to ensure that a) all fuel lines do not leak, b) that combustion is correct and c) that the locomotive can be safely operated under normal operating conditions.
C. Issue of a certificate by G1MRA-CH
The entire documentation relating to the successful test of a boiler and/or gas tank must be submitted to G1MRA-CH's coordinator. This does not apply to commercially manufactured boilers and tanks.
D. Validity of the certificate
The test must be repeated every 4 years (gas tanks every 10 years) at 1.5 X working pressure and at 2 X working pressure whenever any repairs or changes of any kind have been made - especially after soldering work has been carried out on boilers or tanks. A full documentation must be submitted to G1MRA-CH’s coordinator and all relevant details entered on the certificate. This does not refer to the replacement of water-gauge glasses.
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