1989 Soviet nuclear tests

1989
Information
Country	Soviet Union
Test site	Balapan, Semipalatinsk, Kazakhstan; Degelen, Semipalatinsk, Kazakhstan
Period	1989
Number of tests	7
Test type	underground shaft, underground tunnel
Max. yield	118 kilotonnes of TNT (490 TJ)
Navigation
Previous test series	1988 Soviet nuclear tests
Next test series	1990 Soviet nuclear tests

The Soviet Union's 1989 nuclear test series^[1] was a group of 7 nuclear tests conducted in 1989. These tests ^{[note 1]} followed the 1988 Soviet nuclear tests series and preceded the 1990 Soviet nuclear tests series.

Soviet Union's 1989 series tests and detonations

Name [note 2]	Date time (UT)	Local time zone [note 3][2]	Location [note 4]	Elevation + height [note 5]	Delivery, [note 6] Purpose [note 7]	Device [note 8]	Yield [note 9]	Fallout [note 10]	References	Notes
708 - 1	22 January 1989 03:57:09.06	ALMT (6 hrs)	Balapan, Semipalatinsk, Kazakhstan: 1328 49°56′25″N 78°48′58″E / 49.94029°N 78.81603°E	330 m (1,080 ft) +	underground shaft, weapons development		118 kt		[1][3][4][5][6]
708 - 2	22 January 1989 03:57:09.1	ALMT (6 hrs)	Balapan, Semipalatinsk, Kazakhstan: 1328 49°56′25″N 78°48′58″E / 49.94029°N 78.81603°E	330 m (1,080 ft) +	underground shaft, weapons development		unknown yield		[1][3][4][5][6]
709	12 February 1989 04:15:09.26	ALMT (6 hrs)	Balapan, Semipalatinsk, Kazakhstan: 1366 49°55′03″N 78°42′44″E / 49.9174°N 78.71217°E	330 m (1,080 ft) +	underground shaft, weapons development		63 kt		[1][3][4][5][6]
710	17 February 1989 04:01:09.22	ALMT (6 hrs)	Degelen, Semipalatinsk, Kazakhstan: 139 49°49′25″N 78°04′05″E / 49.8235°N 78.068°E	648 m (2,126 ft) +	underground tunnel, weapons development		10 kt		[1][4][5][6][7]
711	8 July 1989 03:47:00.09	ALMT (6 hrs)	Balapan, Semipalatinsk, Kazakhstan: 1352 49°52′07″N 78°46′43″E / 49.86849°N 78.77867°E	330 m (1,080 ft) +	underground shaft, weapons development		22 kt		[1][3][4][5][6]
712 - 1	2 September 1989 04:16:59.85	ALMT (6 hrs)	Balapan, Semipalatinsk, Kazakhstan: 1410 50°00′34″N 78°59′05″E / 50.00945°N 78.98467°E	330 m (1,080 ft) +	underground shaft, weapons development		6 kt		[1][3][4][5][6]
712 - 2	2 September 1989 04:16:59.9	ALMT (6 hrs)	Balapan, Semipalatinsk, Kazakhstan: 1410 50°00′34″N 78°59′05″E / 50.00945°N 78.98467°E	330 m (1,080 ft) +	underground shaft, weapons development		unknown yield		[1][3][4][5][6]
713	4 October 1989 11:30:00.16	ALMT (6 hrs)	Degelen, Semipalatinsk, Kazakhstan: 169/2 49°44′59″N 78°00′42″E / 49.7498°N 78.0117°E	680 m (2,230 ft) - 94 m (308 ft)	underground tunnel, weapon effect		4 kt		[1][4][5][6][7]
714 - 1	19 October 1989 09:49:59.98	ALMT (6 hrs)	Balapan, Semipalatinsk, Kazakhstan: 1365 49°55′20″N 78°54′30″E / 49.92222°N 78.90833°E	330 m (1,080 ft) - 628 m (2,060 ft)	underground shaft, weapons development		85 kt		[1][4][5][6][7]
714 - 2	19 October 1989 09:50:00.0	ALMT (6 hrs)	Balapan, Semipalatinsk, Kazakhstan: 1365 49°55′20″N 78°54′30″E / 49.92222°N 78.90833°E	330 m (1,080 ft) - 592 m (1,942 ft)	underground shaft, weapons development		unknown yield		[1][5][6][8][9]
714 - 3	19 October 1989 09:50:00.0	ALMT (6 hrs)	Balapan, Semipalatinsk, Kazakhstan: 1365 49°55′20″N 78°54′30″E / 49.92222°N 78.90833°E	330 m (1,080 ft) - 556 m (1,824 ft)	underground shaft, weapons development		unknown yield		[1][5][6][8][9]

1. A bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual explosions does not exceed 5 seconds and where the burial points of all explosive devices can be connected by segments of straight lines, each of them connecting two burial points and does not exceed 40 kilometers in length". Mikhailov, V. N., Editor in Chief. "Catalog of World Wide Nuclear Testing". Begell-Atom, LLC.
2. The US, France and Great Britain have code-named their test events, while the USSR and China did not, and therefore have only test numbers (with some exceptions – Soviet peaceful explosions were named). Word translations into English in parentheses unless the name is a proper noun. A dash followed by a number indicates a member of a salvo event. The US also sometimes named the individual explosions in such a salvo test, which results in "name1 – 1(with name2)". If test is canceled or aborted, then the row data like date and location discloses the intended plans, where known.
3. To convert the UT time into standard local, add the number of hours in parentheses to the UT time; for local daylight saving time, add one additional hour. If the result is earlier than 00:00, add 24 hours and subtract 1 from the day; if it is 24:00 or later, subtract 24 hours and add 1 to the day. All historical timezone data are derived from here:
4. Rough place name and a latitude/longitude reference; for rocket-carried tests, the launch location is specified before the detonation location, if known. Some locations are extremely accurate; others (like airdrops and space blasts) may be quite inaccurate. "~" indicates a likely pro-forma rough location, shared with other tests in that same area.
5. Elevation is the ground level at the point directly below the explosion relative to sea level; height is the additional distance added or subtracted by tower, balloon, shaft, tunnel, air drop or other contrivance. For rocket bursts the ground level is "N/A". In some cases it is not clear if the height is absolute or relative to ground, for example, Plumbbob/John. No number or units indicates the value is unknown, while "0" means zero. Sorting on this column is by elevation and height added together.
6. Atmospheric, airdrop, balloon, gun, cruise missile, rocket, surface, tower, and barge are all disallowed by the Partial Nuclear Test Ban Treaty. Sealed shaft and tunnel are underground, and remained useful under the PTBT. Intentional cratering tests are borderline; they occurred under the treaty, were sometimes protested, and generally overlooked if the test was declared to be a peaceful use.
7. Include weapons development, weapon effects, safety test, transport safety test, war, science, joint verification and industrial/peaceful, which may be further broken down.
8. Designations for test items where known, "?" indicates some uncertainty about the preceding value, nicknames for particular devices in quotes. This category of information is often not officially disclosed.
9. Estimated energy yield in tons, kilotons, and megatons. A ton of TNT equivalent is defined as 4.184 gigajoules (1 gigacalorie).
10. Radioactive emission to the atmosphere aside from prompt neutrons, where known. The measured species is only iodine-131 if mentioned, otherwise it is all species. No entry means unknown, probably none if underground and "all" if not; otherwise notation for whether measured on the site only or off the site, where known, and the measured amount of radioactivity released.

References

1. Yang, Xiaoping; North, Robert; Romney, Carl (August 2000). CMR Nuclear Explosion Database (Revision 3) (Technical report). SMDC Monitoring Research.
2. "Timezone Historical Database". iana.com. Retrieved March 8, 2014.
3. Thurber, Clifford; Trabant, Chad; Haslinger, Florian; Hartog, Renate (2001). Nuclear explosion locations at the Balapan, Kazakhstan, nuclear test site: the effects of high-precision arrival times and three-dimensional structure. Physics of the Earth and Planetary Interiors (Technical report) 123. pp. 283–301. doi:10.1016/s0031-9201(00)00215-6. Retrieved December 13, 2013.
4. Khalturin, Vitaly I.; Rautian, Tatyana G.; Richards, Paul G. (2000). "Chemical explosions during 1961-1989 on the Semipalatinsk Test Site, Kazakhstan" (PDF). Pure and Applied Geophysics 158: 143–171. doi:10.1007/pl00001153. Retrieved December 13, 2013.
5. Podvig, Pavel, ed. (2001). Russian Strategic Nuclear Forces. Cambridge, MA: MIT Press. Retrieved January 9, 2014.
6. USSR Nuclear Weapons Tests and Peaceful Nuclear Explosions 1949 through 1990. Sarov, Russia: RFNC-VNIIEF. 1996. The official Russian list of Soviet tests.
7. Kim, Won-Young; Richards, Paul G.; Andrushkin, Vitaly; Ovtchinnikov, Vladimir (April 1, 2001). Borovoye digital seismogram archive for underground nuclear tests during 1966-1996 (PDF) (Technical report). LDEO. Retrieved December 13, 2013.
8. Andrushkin, Vitaly V.; Leith, William (September 1, 2001). The containment of Soviet underground nuclear explosions (PDF) (Open File Report 01-312). USGS. Retrieved December 13, 2013.
9. Nuclear explosions in the USSR: The North Test Site reference material, version 4 (PDF) (Technical report). IAEA Dept. of Nuclear Safety and Security. December 1, 2004. Retrieved December 13, 2013.