TNAG-2828-FCO40-4081-Hong-Kong-Guangdong-nuclear-power-station--Daya-Bay--China-1993 — Page 144

CONFIDENTIAL

HKCC 166/1

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O FEB 1993

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CONFIDENTIAL

FM HONG KONG

TO PRIORITY, PEKING

TELNO 3

OF 020949Z FEBRUARY 93

AND TO PRIORITY FCO

INFO PRIORITY UKREP JLG HONG KONG, UKMIS VIENNA

GUANGDONG NUCLEAR POWER STATION AT DAYA BAY

1.

2.

YOUR TELNO 128 REFERS.

PERHAPS WE SHOULD CLARIFY THAT HONG KONG'S REQUEST FOR INFORMATION DOES NOT STOP AT THE ON-SITE AND OFF-SITE EMERGENCIES. AS EXPLAINED IN OUR TELNO 124, HONG KONG NEEDS TO BE GIVEN FULL AND IMMEDIATE INFORMATION ON ALL STANDBY/PLANT/ON- SITE AND OFF-SITE EMERGENCIES. A MORE DETAILED EXPLANATION IS GIVEN BELOW.

STANDBY/PLANT/ON-SITE/OFF-SITE EMERGENCIES

3.

THESE ARE THE EMERGENCY SITUATIONS CLASSIFIED UNDER THE IAEA'S ACCIDENT CLASSIFICATION SYSTEM. THE PURPOSE OF THIS SYSTEM IS TO FACILITATE PROMPT ALERT OF RELEVANT PARTIES AT THE TIME OF EMERGENCIES SO THAT THEY CAN MOBILISE AND TAKE EFFECTIVE ACTION TO MITIGATE AGAINST ANY DANGER. BRIEFLY, THE FOUR CATEGORIES AND THEIR PURPOSE ARE DESCRIBED AS FOLLOWS (WHICH LARGELY RESEMBLE THOSE USED BY THE CHINESE IN THEIR OFF-SITE PLAN):-

CATEGORY: EMERGENCY STANDBY

EVENTS ARE IN PROCESS OR HAVE OCCURRED WHICH INDICATE A POTENTIAL DEGRADATION OF THE LEVEL OF THE SAFETY OF THE PLANT. NO RELEASE OF RADIOACTIVITY IS EXPECTED.

PURPOSE

TO PROVIDE EARLY AND PROMPT NOTIFICATION OF MINOR EVENTS WHICH COULD, IF NOT PROPERLY RECTIFIED, LEAD TO MORE SERIOUS CONSEQUENCES. APPROPRIATE PLANT PERSONNEL ARE PLACED ON STANDBY.

CATEGORY : PLANT EMERGENCY

EVENTS ARE IN PROCESS OR HAVE OCCURRED WHICH INVOLVE AN ACTUAL OR POTENTIAL SUBSTANTIAL DEGRADATION OF

1

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