Nuclear Regulatory Commission

Issue 90: Technical Specifications for Anticipatory Trips ICSB

Reactor protection systems (RPS) or "scram" systems are tripped by many diverse signals.

This issue was identified[1]following a staff evaluation of all

This issue was initiated to address concerns raised by the Union of Concerned Scientists.

The HPCI steam supply line has two containment isolation valves in series: one inside and one outside of the containment. B

In March 1982, leaks were detected in the heat-affected zones of the safe-end-to-pipe welds in two of the 28 in.

In BWRs, SRVs are mounted on the main steam line inside the drywell.

This issue was raised by the ACRS in a memorandum[1]to the Commission in October 1983.

On August 18, 1982, the ACRS issued a letter[1]to the Commissio

The risks of beyond design basis accidents in the spent fuel storage pool were examined in WASH-1400

In October 1982, the Executive Director for Operations appointed the Committee to Review Safety Requirements at Power React