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Page Title:
Table 5-1. Quantity-distance separation |
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|  DOE-HDBK-1092-2004
Table 5-1. Quantity-distance separation
for protection of underground service installationsa
Quantity of explosive
Distance, m (ft)
(maximum pounds)
100
26
(80)
200
26
(80)
500
26
(80)
1,000
26
(80)
2,000
26
(80)
5,000
26
(80)
10,000
26
(80)
20,000
28
(85)
50,000
36
(110)
100,000
46
(140)
250,000
62
(190)
a
If the planned building is designed to contain the
effects of an explosion, the formula D (distance) =
3.0 w1/3 (w=weight) can be used to determine
separation distances for less than 20,000 lb.
5.1.5.4 BUILDING SERVICE ENTRANCE
The electrical service entrance for explosives facilities shall be provided with:
1.
An intermediate, metal-oxide surge lightning arrester on the primary side of the transformer.
2.
Surge arresters and surge capacitors on the supply side of the main service disconnect.
3.
Interconnected grounding between the lightning arrester, surge arrester, surge capacitors,
service entrance ground, and building ground.
5.1.6
TESTING
Certain provisions shall be complied with before tests are performed. Qualified personnel shall
be used to determine the time and procedure of the test.
5-7
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