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Salem Unit 2 operated in a condition prohi … Salem Unit 2 operated in a condition prohibited by Technical Specification (TS) 3.6.1.4, "Internal Pressure," for periods from May 1999 until April 2002 due to inaccurate containment pressure indication. On April 20, 2002, PSEG Nuclear discovered that the instrument loop for the containment differential pressure indicator contained additional 250 ohm resistors. The effect of the additional resistors was to cause the indicated differential pressure to be one half of the actual differential pressure. The indicator is used by plant operators in controlling containment pressure within the limits specified in TS 3.6.1.4. This event resulted from the installation of an incorrect part as an equivalent replacement for an obsolete differential pressure alarm module. There were no safety consequences associated with this event. The containment differential pressure indicator is separate from the protective and engineered safety feature instrumentation systems, and the OPERABILITY of these systems was unaffected. Resistors were removed and all loop components were verified to operate properly.ponents were verified to operate properly. +
April 20, 2002 +
Salem Unit 2 operated in a condition prohi … Salem Unit 2 operated in a condition prohibited by Technical Specification (TS) 3.6.1.4, "Internal Pressure," for periods from May 1999 until April 2002 due to inaccurate containment pressure indication. On April 20, 2002, PSEG Nuclear discovered that the instrument loop for the containment differential pressure indicator contained additional 250 ohm resistors. The effect of the additional resistors was to cause the indicated differential pressure to be one half of the actual differential pressure. The indicator is used by plant operators in controlling containment pressure within the limits specified in TS 3.6.1.4. This event resulted from the installation of an incorrect part as an equivalent replacement for an obsolete differential pressure alarm module. There were no safety consequences associated with this event. The containment differential pressure indicator is separate from the protective and engineered safety feature instrumentation systems, and the OPERABILITY of these systems was unaffected. Resistors were removed and all loop components were verified to operate properly.ponents were verified to operate properly. +
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June 19, 2002 +
April 20, 2002 +
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