| 31. | The boilers had a working pressure of.
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| 32. | Working pressure was initially 120 psi but was later raised to 140 psi and then 160 psi.
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| 33. | The high working pressures often put on the staff can sometimes exacerbate such rushed and impersonal treatment.
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| 34. | The ship had one three-cylinder horizontal boilers provided steam to the engine at a working pressure of.
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| 35. | Nos . 33, 58 and 69 later received boilers with a working pressure of in place of.
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| 36. | It was not under working pressure,
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| 37. | Tanks normally have a working pressure of up to, but this can be raised for an emergency discharge.
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| 38. | The usual working pressure of a firehose can vary between while its bursting pressure can be up to.
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| 39. | This force is called working pressure.
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| 40. | The safety valves are set to release excess steam to avoid going above the boiler's maximum working pressure.
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