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Highlighted items were discussed at DRPIDRS Coordination meeting BOLD items are new --
Outside of Scope SALEM ONE,.,, Weekend Coverage: Harry/Dan A 1(XD.7 AL-2=(2of3)O.1 1 AL,3=t1X)>O13 Outside of Scope AFW piping degradation and Tritium discovery, see below Outside of Scope
/*rv 1-iping LPegrdUuauunI
- Buried AFW piping to the 12 and 14 S/Gs appears to have si*nificant degradation ohfthe protective coating and piping, The. preliminary guided wave inspection results indicate that the ASMEIClass 2 piping is degraded below min wall The pipe is schedule 80 4" inside diamete carbon steel piping with a coal tartype coating that appears to been hand applied, The piping run of concern involves abo&ut 150 ft of pipe that is buried at depths'ranging from 4 ft adjacent to" the dut side of containmhto17 ft deep. inacoveredarea adjacerit:to-the containment Licensee is assembling teams, making plans for excavation to conduct UT (the official test method accepted by NRC).
Note (per DRS staff) guided wave is effective for long straight runs without valves and flanges and bends. UT is still the methodology of record to meet Code inspection requirements. Industry (EPRI) is in the process of building future mockup test facility in NC to qualify the guided wave technique, but for now guided wave technique is not a reliable indicator for some pipes in nuclear applications.
The residents walked the buried AFW pipe excavation down and observed standing water and four services.
Followed-up with PSEG and learned the following:
o Two excavations planned to cornIelte te wave form coverage and to co~rroborate the< first wave form test results with independent UY*T Current (back of the envelope calcs) indicate PSEG will be able to demonstrate operability with the current degradation of 35% of wall thickness (65% remaining). This Op Eval will probably rely on BOTH the strength of the remaining material and the lower pressures AFW would typically see.
EOC -Unit 2 ha girates mai rtne* pl*antisa presumably pr irn bettr conditin;, documrentatibn eicists. that proves ettlpiping was opepned and nspected[-10_years ago and foundto be-in pristine condition; ISI code gives more
,* allowance to an operating unit (they can take credit for up to 90% of the yield stress)
Outside of Scope Wmivon in"o1 record was deleted In
- W,-.dance vilt 14i Freoizom oi IrtlorrnItof AC FOIAOA
[Outside of Scope Outside ofScope