LARGE STREAM TURBINE-GENERATORS (10,000 KW AND LARGER) Scheduled production of large steam turbine-generators for all classes of customers, as of October 1, 1951, totals 26,361,200 kw against 24,050,500 kw as of April 1, 1951, an increase of 2,310,700 kw, or 9.6 per cent. The total of new capacity scheduled since April 1 is 4,993,200 kw, compared with shipments during the same period of 2,682,500 kw.

For U. S. Electric Power Systems, scheduled production as of October 1 is 24,007,200 kw against 21,595,500 kw as of April 1, an increase of 2,411,700 kw or 11 percent. The total of new capacity scheduled since April 1 is 4,349,200 kw, compared with shipments during the same period of 1,937,500 kw.

As of October 1, 1951, the total shipments scheduled for U. S. Electric Power Systems in 1951 are 390,000 kw less than shown in April. Production scheduled for 1952 is 20,800 kw less than in April. The increase in scheduled production shown for 1953 and beyond reflects new orders placed since April 1.

As of October 1, total scheduled production for both 1952 and 1953 is at the limit of the present estimated full manufacturing capacity. Therefore, any further delays in production must necessarily affect the schedules over this entire period. It is also apparent that any further manufacturing time lost could not be recovered until sometime in 1954.

Manufacturers report that they are being allotted less material than actually required to maintain their schedules and that it has not been possible to obtain delivery of all materials allotted them. By utilizing normal working inventories, the slippage up to the present has been less than it would otherwise have been. Such inventories, however, have been exhausted and cannot be replaced. Production is thus severely retarded and brought to a hand-to-mouth basis.

The estimated open manufacturing capacity of 200,000 kw shown for 1953 applies to units in the range of 10,000 to 15,000 kw. Estimated open manufacturing capacity of 5,500,000 kw shown for 1954 applies to a wider range of sizes, the larger machines being available mainly for shipment during the last half of the

year.

These estimates are based upon the capacity of manufacturing facilities, assuming that all required materials would be readily available. The full manufacturing capacity for building large steam turbine-generators expressed in terms of kilowatts of capacity per year is now estimated to be about 10,000,000 kw. This capacity will vary depending upon the size and type of units involved, the proportions of duplicate designs, and other factors, such as the number of shifts employed and the extent of the workweek.

SMALL STEAM TURBINE-GENERATORS (4,000 TO 9,999 KW.)

Scheduled production of small steam turbine-generators for all classes of customers, as of October 1, 1951, is 695,000 kw. against 779,500 kw. as of April 1, 1951. The total capacity shipped since April 1 is 194,000 kw., whereas new capacity scheduled during the same period totals 109,500 kw.

As of October 1, 1951, the total shipments scheduled for U. S. Electric Power Systems for 1951 are 148,500 kw., compared with 163,500 kw. as of April, a loss of 15,000 kw. in 1951 production now rescheduled for 1952. The corresponding slippage of capacity for U. S. Industrials is 27,500 kw.

There is considerable manufacturing capacity for production of small steam turbine-generators, but lack of materials has slowed their production the same as for other classes of equipment.

The estimated open manufacturing capacity of 250,000 kw. in 1952 is available for shipment of units during the last quarter of the year. Estimated full manufacturing capacity of 1,200,000 kw. is available in 1953 and beyond.

These estimates assume that all required materials would be obtainable as needed.

Combining this full manufacturing capacity with the estimated full manufacturing capacity for large steam turbine-generators gives a total of 11,200,000 kw. per year as the potential capacity for the production of units 4,000 kw. and larger.

TABLE VI.-Small steam turbine-generators (4,000 to 9,999 kilowatts)