NY -- Standard&Poor's CreditWire 10/2/98 – Standard&Poor's today assigned its 'A-2' rating to Precision Castparts Corp.'s $600 million 4(2) commercial paper program and its triple-'B' bank loan rating to the firm's $400 million five-year revolving credit facility and $200 million 364-day revolving credit facility with a term-out option. Standard&Poor's also withdrew its triple-'B' rating on the company's existing $250 million revolving credit facility and $150 million term loan. At the same time, Standard&Poor's affirmed its triple-'B' corporate credit and senior unsecured debt ratings on the company. The outlook remains stable. Commercial paper proceeds will be used to repay bank borrowings and for general corporate purposes. The $600 million facilities are being arranged