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Top The TRMA Discussion Forum topic #55533
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Subject: "RE: Reciprocating room CG #2" Previous topic | Next topic
Scott AndrewsThu Jan-04-18 05:18 PM
Member since Sep 18th 2004
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#55712, "RE: Reciprocating room CG #2"
In response to In response to 35
Thu Jan-04-18 05:25 PMby Scott Andrews

  

          

Excellent, excellent job! As far as the remaining pumps are concerned, the hot well and feed water pumps run much more slowly than the rest of the reciprocating machinery. Here are two videos which very well illustrate what I mean:

https://www.youtube.com/watch?v=KxBMCxlknsc

https://www.youtube.com/watch?v=phw9CUjv9AE

Their speed will vary somewhat with demand. The feed water pumps almost always run at a crawl, since the system is injecting water into the boilers against a head of 215 to 250 psig. Then there are the fresh water and sanitary (salt) water/fire main pumps. The latter pumps, when called upon in service, can run at up to 120+ strokes per minute, but are generally running more slowly (40 to 60 strokes) -- and often they run intermittently -- that's something I'm not sure I'd attempt to replicate in such a detailed animation!

Note: on the night of the sinking, the suctions of all of these pumps had been redirected to the main bilge lines, and the outlet sides redirected to eject water overboard through some sea chest or other large through-hull fitting; with no limit to their supply and practically no back-pressure on their discharge sides, you can bet that the pump rods and levers were flying at a blur!

Regards,
Scott Andrews
TRMA Trustee

  

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Reciprocating room CG #2 [View all] , SteveFury, Sun Oct-15-17 09:17 PM
  RE: Reciprocating room CG #2, SteveFury, Oct 16th 2017, #1
RE: Reciprocating room CG #2, Dave Abate, Oct 16th 2017, #2
      RE: Reciprocating room CG #2, SteveFury, Oct 16th 2017, #3
           RE: Reciprocating room CG #2, Ralph Currell, Oct 17th 2017, #4
                RE: Reciprocating room CG #2, Bill West, Oct 17th 2017, #5
                RE: Reciprocating room CG #2, Ralph Currell, Oct 17th 2017, #6
                     RE: Reciprocating room CG #2, Bill West, Oct 17th 2017, #7
                          RE: Reciprocating room CG #2, SteveFury, Oct 21st 2017, #8
                               RE: Reciprocating room CG #2, SteveFury, Oct 22nd 2017, #9
                                    RE: Reciprocating room CG #2, Joe100, Oct 22nd 2017, #10
                                         RE: Reciprocating room CG #2, Ralph Currell, Oct 22nd 2017, #11
                                              RE: Reciprocating room CG #2, SteveFury, Oct 22nd 2017, #12
                                                   RE: Reciprocating room CG #2, Ralph Currell, Oct 22nd 2017, #13
                                                        RE: Reciprocating room CG #2, Bill West, Oct 23rd 2017, #14
                                                             RE: Reciprocating room CG #2, Ralph Currell, Oct 23rd 2017, #15
                                                                  RE: Reciprocating room CG #2, c riley, Nov 02nd 2017, #16
                                                                       RE: Reciprocating room CG #2, Ralph Currell, Nov 02nd 2017, #17
                                                                            RE: Reciprocating room CG #2, SteveFury, Nov 11th 2017, #18
                                                                                 RE: Reciprocating room CG #2, SteveFury, Nov 11th 2017, #19
                                                                                      RE: Reciprocating room CG #2, Ralph Currell, Nov 11th 2017, #20
                                                                                      RE: Reciprocating room CG #2, Bill West, Nov 12th 2017, #21
                                                                                      RE: Reciprocating room CG #2, SteveFury, Nov 12th 2017, #22
                                                                                      RE: Reciprocating room CG #2, SteveFury, Nov 29th 2017, #23
                                                                                      RE: Reciprocating room CG #2, bpread, Nov 29th 2017, #24
                                                                                      RE: Reciprocating room CG #2, Ralph Currell, Nov 29th 2017, #25
                                                                                      RE: Reciprocating room CG #2, SteveFury, Nov 29th 2017, #26
                                                                                      RE: Reciprocating room CG #2, SteveFury, Nov 29th 2017, #27
                                                                                      RE: Reciprocating room CG #2, SteveFury, Nov 29th 2017, #28
                                                                                      RE: Reciprocating room CG #2, Bill West, Nov 30th 2017, #30
                                                                                      RE: Reciprocating room CG #2, bpread, Nov 30th 2017, #31
                                                                                      RE: Reciprocating room CG #2, SteveFury, Dec 01st 2017, #32
                                                                                      RE: Reciprocating room CG #2, Scott Andrews, Dec 01st 2017, #33
                                                                                      RE: Reciprocating room CG #2, SteveFury, Dec 02nd 2017, #34
                                                                                      RE: Reciprocating room CG #2, William W. Young, Nov 29th 2017, #29
                                                                                      RE: Reciprocating room CG #2, SteveFury, Dec 30th 2017, #35
                                                                                      RE: Reciprocating room CG #2, Ralph Currell, Dec 30th 2017, #36
                                                                                      RE: Reciprocating room CG #2, Bill West, Jan 03rd 2018, #38
                                                                                      RE: Reciprocating room CG #2, Scott Andrews, Jan 04th 2018 #39
                RE: Reciprocating room CG #2, Milner62, Jan 01st 2018, #37
                     RE: Reciprocating room CG #2, Scott Andrews, Jan 04th 2018, #40

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