Document Z88mbMonrm37n2JwpJwQw7yZZ

E. I. DU .*CNT cc Nkmcuxb 8 Company WllAUNTTOM. OCLA'.YARu BWNBMNa BWimONT August 5, 1938 H. 0. 307CE DISTRICT SUPIItIHEIBENT COMSTRUCnOR DIVISIOH coaiRocrion ?344-864g9613 - PttSSPEE TE8T1X IMnMg AIR 3hciLTTT-;s Zu accordance with Suction 0, Pare 19 of the Construction Division Safety Operational Methods Manual, on Pressure Vessels, your approval is requested of the procedures to be followed in pressure testing vith air in the throe categories listed below for Projects 8344, 3648 acd 9815. A. T*tM^t Air Drvera eeesnenDiiaiBsneHwieMOTeBv Bach of the do dryers will have two towers, all of which will have ASIC pressure vessel sreaps for 150# design pressure. Each tower will alto have an individual pressure gags and prassura relief valve. The dryers will be aubjeeted to appzoxlaasely 65 pels, full plant sir pressure, following which ebay win be placad - on Automatic cycle, with e small volute discharge to atmssphorc, to regenerate end supply dry sir for the header prassura test. B. Instrument Air leader Sretewe These systems orlginete at the inatrunaat sir dryers, ubaoce they run via outsice overhead pipe supports es each of the FAA areas. The pipe is galvanises A3TM A-53 buttueld with 150# ductile iron fittings. Design pressure reting is 130#. Bone of the headers is larger than 2" ips. Project 8648 air heed system includes cn existing sir receiver. The systems, including the air receiver, will be leak tested at 13#. than reieod to plant sir pressuxo of epproxinataly 65 peig. This procedure follows Std. Eng. Spec. S?U, Paragraph 16.1, `:hieb specifies, "Do not teat hydraulically1' and BPIS, I'arigraph 8.2.1 accept that soap test pressure rill be 15 peig instead of 25 peig. DUP 0918113 C. Air rrensmteeion Lines These ere l/4r QD polyethylene end copper tubes, both single and in bundles of seven is e polyvinyl-chloride or Bulan sheath. As specified in Std. Sag. Spec. SPZ3, Paragraph 16.2, cubing vill DU 031705 asgiaia August 3, 1928 P&ga 2 H. 1. floyca bo Ctstod according to tag. Std. 111412. Aceachad is our procoduro, doeoilad as to safety in preparation and curing test. a. C. 8E8ES. FIELB PSOJICT MA8&G28. BSBteh ittiotaMiiti 2. k. Borth DUf 0918114 DU 031706 2 Field Project Managers 10/1/63 The Dtrieion objective cool will again be 0*0 for the year. Ve feel that this goal will be achieved in 1964 provided eeeh of oe will shoulder the responsibility he hes eeeepted end exercise the inherent authority. COISTRUCTIOlf DX7I3I01I Z&WfaeAtsC F. H. Mackie, Kaaagor iai,, DU 031707