WSP08998

• File Number: 8220.200.05
• Description: CRSP - Boulder Dam
• Basin: Colorado Mainstem
• Water Division: 1
• Date: 10/31/1938
• Title: Report of Competitive Value of Falling Water for Primary Energy at Boulder Dam in Competition with Steam Power at the Load Center
• Water Supply Pro - Doc Type: Report/Study

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A. e. ROeeRTS
CONSULTING eNGINeeR

SweTLAND D1..I)G.
CLeVeLAND

SECTION II

of

REPORT BY A.. B. ROBERTS

REVIEW OF REPORT OF H. S. SANDS
DATED JULY 19, 1938

I have roviewed the report by Mr. H. S. Sands,
dRted July 19, 1938, entitled "Engineering and Financial
analy s of proposed Boulder G:tnyon Project Adjustment ActU,
with p rticular reference to the value of falling water fo~
primnr energy at Boulder Dam, and wish to make the follow,
ing co ments:
On PQge 11 of his report, he estimQted f1.n aver!1.ge.
penk d m".nd of 987,500 kw. at Boulder 011 903,963 kw. de-
11 vere P.t Los Angeles, bnsed on 8!% loss.. To meet his
demnnd e assumed the full load rating of the mnchines as
82,500 va. eA-ch, which gR,ve IJ. total equivalent of twel vo
units. It is importnnt to note, in this connection, th~t

during rolonged periods of low river flow, resulting in

low hea when firm energy only must be generated, themaxt~

mum c".p city of each unit is 66,000 kw. Therefore, at

times 0 low water there would be required. ,'In inst'1.llntion

of fifte n largo units plus one spare, making a tot~l of

sixteen nits, or fifteon large and two small units, which

is the c pacity of tho goner~ting station as planned,While

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