First Technical National Section Session

Monday, May 15, 1922, 2:15 P. M.

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and W. G. Schmauder, will make a report tomorrow. Is there anything further which is to be discussed or approved at this meeting?

W. L. WADSWORTH: I think the general plan is very good. It would seem to me, though, that different arrangements would have to be made in order to keep the report going. If you feed this information to the Bulletin each month you would have to finish up a report of a subcommittee, then feed it to the Bulletin, then start in on another subject, and feed it next time to the Bulletin.

Now, as it is, all the subcommittees finish reporting about a month before the convention, and it would seem to me that your committees would have to work on one subject and clear that up, and then start on another.

CHAIRMAN CARLE: Well, there is no question but that there are certain difficulties, but the advantages outweigh them.

W. L. WADSWORTH: I thought for a long time that the proper scheme for these meetings would be to hold, as you suggest, meetings in different parts of the geographic divisions and call that the Technical Convention. Then, at the main convention, the yearly convention, hold general sessions in the morning and afternoon. Get our executives to these general meetings and hold general sessions and take up these different subjects. Let us have one large room where everybody will meet in the morning and in the afternoon.

CHAIRMAN CARLE: I will ask Mr. Pharis to present the report of the Hydraulic Power Committee.

Report of Hydraulic Power Committee

The first annual report of the Hydraulic Power Committee, which was submitted at the Forty-fourth Convention at Chicago last year, was necessarily limited in the extent of its technical data and discussions, since much of the time of the Committee during the first year of its existence was required in the work of organization and in the preparation of a comprehensive outline to form a basis for the continuing activities of the Committee. Last year's report consisted of two sections, the first one covering the plans and organization of the Committee, and the second section consisting of its technical report. This year the Committee has consistently followed the plans which were previously laid, thus carrying out the general aim of making all technical committee activities continuous rather than intermittent in nature. Subjects were assigned for investigation

General Considerations in the Design Within recent years an increasing amount of attention has been given to general design of hydroelectric generating stations in the endeavor to reduce first cost, but more especially to perfect the arrangement of equipment so as to facilitate operation and maintenance and insure continuity of service. The Committee has corresponded with many engineers and operating executives to obtain information concerning present-day practice and tendencies, and especially to obtain opinions from experienced men which would have an important bearing on future developments. While the widely varying fundamental conditions prevent the same degree of uniformity in practice as is to be found in steam plant design, there are certain fundamental considerations which have a general application. This section of the report is to a large extent a composite of the data and opinions submitted by engineers of operating companies who have been consulted. Discussion of Fundamental Principles Governing Generating Station Arrangement

A necessary and important preliminary to any con

and report to individual committee members, following the general outline which was published in last year's report. This method has produced so much interesting and valuable material that the Committee finds itself unable to publish more than a portion of it.

After a review of available material, it was decided to confine the present report principally to the generating station and its equipment, leaving other phases of hydraulic development for further consideration by future committees. In addition to the main report upon the generating station and its equipment, the present report includes a discussion of records for maintaining continuous check upon station performance and a discussion of the icehandling problem, both of which are of great importance today.

of Hydro-Electric Generating Stations
sideration of generating station arrangement is a
comprehensive examination of the market conditions
and a decision regarding the amount and kind of
service to be furnished.

If the service is of the character requiring reliability under all circumstances, with corresponding high rate of return, the designer may be justified in spending more money in securing the greater degree of reliability than if the load is of a character permitting an occasional interruption. In some cases the designer is justified in adopting somewhat lower standards of equipment and arrangement-with possibly higher operating and maintenance costs-and involving some hazards-in order to keep first costs down. Consideration in detail of these features may serve to influence by a substantial percentage the amount of money that may be put into the project.

When the broad feature has been outlined, the designer is then free to consider the arrangement in this stage that the generating station in its broadest more detail and it is always profitable to recall at aspects serves two purposes, viz.:

1. The substructure provides water passages to