| Year | 1994 |
| Date | 02-Dec |
| Volume | 173 |
| Issue | 3,982 |
| Page | 682 |
| Category | Steam |
| Part | 1 |
| Title | Safety Valves |
| Author | W.B.Hall, B.Hughes & T.D.Walshaw |
| Notes | Present and explain their findings on investigation of a vital steam fitting. Survey of the problem, editorial note, sample calculation, summary, addendum: spring and lever operated valves, references, acknowledgements. See EIM 25 6 179 |