International Standard Bases and Safety Classification - Nuclear Power Plant Instrumentation and Control Systems for Safety and Security - page 35

Figure 1. IAEA safety standards categories

examples are the documents (IAEA, 2010) and
(IAEA, 2009).The Specific Safety Requirements
(SSR) are applicable to specific installations and
activities.
Overarching requirements of NPP I&C sys-
tems contain documents from group 2 “Specific
safety requirements, devoted to safety of nuclear
power plants”: “2.1 Design “(IAEA, 2012) and 2.2
“Commissioning and operation” (IAEA, 2011,a).
“Safety Guides”: Safety Guides provide rec-
ommendations and guidance on how to comply
with the safety requirements, indicating an inter-
national consensus that is necessary to take the
measures recommended (or equivalent alternative
measures). The Safety Guides present international
good practices, and increasingly they reflect best
practices, to help users striving to achieve high
levels of safety.
General Safety Guides (GSG) are applicable
to all facilities and activities. Document number
1 of this group, GSG-1, is the guide, devoted to
classification of radioactive waste, the second
GSG-2 contains criteria for use in preparedness and
response for a nuclear and radiological emergency.
Specific Safety Guides (SSG) are applicable
to specified facilities or activities. The recently

developed new safety guide “Design of I&C Sys-
tems for Nuclear Power Plants” (IAEA, 2013,a)
will be related to Specific Safety Guide group.
This document will combine and supersede the
current 2 safety guides: NS-G-1.1 (IAEA, 2000,
b) and NS-G-1.3 (IAEA, 2002).

Other IAEA Documents

International Nuclear Safety Advisory Group -
INSAG , in which the most authoritative experts
from different countries are working, was es-
tablished in 1985. The group develops general
safety concepts on the basis of analysis of activity
results both within IAEA framework and on other
information. INSAG documents formally have
information status. However, in fact they should be
applied in international practice, because they re-
flect international trends of nuclear safety and due
to them documents of both IAEA and its member
countries are issued. The first INSAG paper was
devoted to causes and effects of the Chernobyl
NPP disaster. For NPP I&C 75-INSAG-3 “Basic
safety principles for nuclear power plants” is very
important. It was issued in 1988, then revised in
1999 and reissued under the same title but with