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Clark, NRR) Tj ET BT /F1 13.3 Tf 196.8 627.984 Td (Office of Nuclear Reactor Regulation) Tj ET BT /F1 9.7 Tf 89.04 602.4 Td (FP.0fi:) Tj ET BT /F0 9.4 Tf 197.04 603.84 Td (C. J. lleltemes, Jr. , Director) Tj ET BT /F1 10.3 Tf 488.64 606.48 Td (AE0D/E313) Tj ET BT /F1 13.6 Tf 196.8 591.264 Td (Office for Analysis and Evaluation) Tj ET BT /F1 13.1 Tf 208.8 578.544 Td (of Operational Data) Tj ET BT /F1 9.7 Tf 88.56 553.92 Td (SUBJECT:) Tj ET BT /F1 10.0 Tf 197.28 553.92 Td (POTENTIAL CONTAMINATION OF THE SPENT FUEL POOL AND) Tj ET BT /F1 9.3 Tf 197.04 541.92 Td (PRIMARY REACTOR SYSTEM) Tj ET BT /F1 13.2 Tf 88.56 506.112 Td (A recently completed Engineering Evaluation Report on the above subject is) Tj ET BT /F1 13.3 Tf 88.32 494.544 Td (enclosed. Our evaluation concluded that two separate events at the same) Tj ET BT /F1 13.8 Tf 89.28 481.92 Td (plant site, which involved cracking of fuel assembly nozzles in the spent) Tj ET BT /F1 14.2 Tf 89.04 469.488 Td (fuel pool and in piping from the boric acid storage tank to the safety) Tj ET BT /F1 13.9 Tf 89.04 457.488 Td (injection system, are indicative of degradation that resulted from contami-) Tj ET BT /F1 13.5 Tf 88.8 445.296 Td (nation of the systems. Since the postulated sources of contamination were) Tj ET BT /F1 14.0 Tf 88.56 433.632 Td (a contaminated batch of boric acid or resin intrusion due to the recycling) Tj ET BT /F1 13.9 Tf 88.8 420.96 Td (system, the issue is potentially gen ric to PWR's.) Tj ET BT /F1 12.9 Tf 88.56 396.864 Td (Some important aspects are that:) Tj ET BT /F1 13.8 Tf 293.52 397.2 Td (\(1\) this type of contamination was not) Tj ET BT /F1 13.7 Tf 88.8 384.768 Td (anticipated, \(2\) the water chemistry monitoring programs for the spent fuel) Tj ET BT /F1 13.7 Tf 88.8 372.336 Td (pool and the pirmary niactor system do not analyze for sulfates, and \(3\) an) Tj ET BT /F1 13.9 Tf 88.32 360.24 Td (unsuspecting licensee could inadvertently place a plant in a condition that) Tj ET BT 87.84 347.856 Td (may result in significant degradation of safety related equipment. We believe) Tj ET BT /F1 13.4 Tf 88.8 335.952 Td (it would be prudent for NRR to consider establishment of requirements to) Tj ET BT /F1 13.5 Tf 89.04 323.568 Td (include monitoring for sulfur contaminants in the water chemistry programs) Tj ET BT /F1 13.7 Tf 88.8 311.232 Td (for the primary reactor system and the spent fuel pool.) 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