N.Y.C. Admin. Code § FC 5604: Section FC 5604: Explosives Storage and Handling

5604.1 General.

All explosives, including black powder, propellant-actuated cartridges, small arms ammunition and small arms primers, and smokeless propellants, shall be stored, handled, used and sold in accordance with this chapter and NFPA 495. Unclassified detonable organic peroxide, detonable pyrophoric materials, detonable unstable (reactive) materials and detonable water-reactive materials shall additionally comply with the requirements of other chapters of this code applicable to such materials.

5604.1.1 Calculation of quantity of explosives.

The quantity of explosives stored at any location and the distance from such storage to protected exposures shall be in accordance with the quantity-distance tables in FC 5604.5. The net explosive weight of the explosives shall be determined in accordance with FC 5604.1.1.1 through 5604.1.1.6.

5604.1.1.1 Mass explosion hazard explosives.

For Division 1.1, 1.2 or 1.5 explosives, the total net explosive weight of all such explosives, or the TNT equivalent, shall be used for purposes of quantity-distance requirements in accordance with FC Table 5604.5.2(2).

5604.1.1.2 Non-mass explosion hazard explosives, except Division 1.4.

1. For Division 1.3 propellants, the total weight of the propellants alone shall be the net explosive weight for purposes of quantity-distance requirements in accordance with FC Table 5604.5.2(3).

2. The sum of the net weights of metal powders and pyrotechnic materials shall be the net explosive weight for purposes of quantity-distance requirements in accordance with FC Table 5604.5.2(3).

5604.1.1.3 Combination of mass explosion hazard and non-mass explosion hazard explosives, except Division 1.4.

1. When Division 1.1 and 1.2 explosives are located in the same site, determine the distance for the total quantity considered first as if the total quantity were in Division 1.1 and then as if the total quantity were in Division 1.2. The required distance is the greater of the two. When the Division 1.1 requirements are controlling and the TNT equivalent of the Division 1.2 explosive is known, the TNT equivalent weight of the Division 1.2 explosives shall be added to the total explosive weight of Division 1.1 explosives to determine the net explosive weight for the Division 1.1 distance determination, for purposes of quantity-distance requirements in accordance with FC Table 5604.5.2(2).

2. When Division 1.1 and 1.3 explosives are located in the same site, determine the distances for the total quantity considered first as if the total quantity were in Division 1.1 and then as if the total quantity were in Division 1.3. The required distance is the greater of the two. When the Division 1.1 requirements are controlling and the TNT equivalent of the Division 1.3 explosives is known, the TNT equivalent weight of the Division 1.3 explosives shall be added to the total explosive weight of Division 1.1 explosives to determine the net explosive weight for the Division 1.1 distance determination, for purposes of quantity-distance requirements in accordance with FC Table 5604.5.2(2) or 5604.5.2(3), as appropriate.

3. When Division 1.1, 1.2 and 1.3 explosives are located in the same site, determine the distances for the total quantity considered first as if the total quantity were in Division 1.1, next as if the total quantity were in Division 1.2 and finally as if the total quantity were in Division 1.3. The required distance is the greatest of the three. When the Division 1.1 requirements are controlling and the TNT equivalent of the Division 1.2 and Division 1.3 explosives are known, the TNT equivalent weight of the Division 1.2 and Division 1.3 explosives shall be added to the total explosive weight of Division 1.1 explosives to determine the net explosive weight for the Division 1.1 distance determination, for purposes of quantity-distance requirements in accordance with FC Table 5604.5.2(2).

4. For any composite pyrotechnic material and Division 1.1 or Division 1.3 explosives, the sum of the net weights of the pyrotechnic material and the explosives shall be used for the distance determination, for purposes of quantity-distance requirements in accordance with FC Tables 5604.5.2(2) and 5604.5.2(3).

5604.1.1.4 Division 1.4 explosives.

For Division 1.4 explosives, the total weight of the explosive alone is the net weight for the distance determination, for purposes of quantity-distance requirements in accordance with FC Table 5604.5.2(4).

5604.1.1.5 Detonating cord.

Detonating cord of 50 grains per foot shall be calculated as equivalent to 8 pounds (4 kg) of high explosives per 1,000 feet (304 800 mm), for purposes of quantity-distance requirements. Heavier or lighter core loads shall be rated proportionally.

5604.1.1.6 Detonators.

All types of detonators in strengths through No. 8 cap shall be rated at 1 1/2 pounds (0.68 kg) of explosives per 1,000 caps, for purposes of quantity-distance requirements. Detonators in strengths higher than No. 8 cap shall be rated as prescribed by the manufacturer.

5604.2 Storage facility locations.

High explosives may only be stored for use in blasting operations conducted in New York City, and only in a magazine or other approved storage facility at a vendor's facility or job site. High explosives to be used in New York City shall be delivered to a vendor's facility located within New York City, unless otherwise authorized by the department. Explosives shall be delivered to and removed from the job site in accordance with this section and the rules. No explosives shall be delivered to any job site without the prior authorization of the department.

5604.3 Magazines.

The storage of explosives in magazines shall comply with the requirements of FC 5604.3.1 through 5604.3.4 and FC Table 5604.3. Explosives shall be stored in magazines constructed, installed, operated and maintained in accordance with the requirements of this section, NFPA 495, NFPA 1124 and, except for portable or mobile magazines not exceeding 120 square feet (11 m

2

) in area, the construction codes including the Building Code.

FC Table 5604.3 Storage Amounts and Magazine Requirements for Explosives Maximum Allowable Quantity per Control Area

New UN/DOTn Division

Old DOTn Class

ATF/OSHA Class

Indoor

a

(pounds)

Outdoors (pounds)

Magazine Type Allowed

Unprotected

Cabinet

Sprinklers

Sprinklers & Cabinet

1

2

3

4

5

1.1

A

High

0

0

0

0

0

X

X

X

—

—

1.2

A

High

0

0

1

2

0

X

X

X

—

—

1.2

B

Low

0

0

1

2

0

X

X

X

X

—

1.3

b

B

Low

0

0

5

10

0

X

X

X

X

—

1.4

B

Low

0

0

50

100

0

X

X

X

X

—

1.5

C

Low

0

0

1

2

0

X

X

X

X

—

1.5

Blasing Agent

Blasing Agent

0

0

1

2

0

X

X

X

X

X

1.6

N/A

N/A

0

0

1

2

0

X

X

X

X

X

For SI: 1 pound = 0.454 kg, 1 pound per gallon = 0.12 kg per liter, 1 ounce = 28.35 g.

a. A factor of 10 pounds per gallon shall be used for converting pounds (solid) to gallons (liquid) in accordance with FC 5003.1.2.

b. Black powder shall be stored in a Type 1, 2, 3 or 4 magazine as provided for in FC 5604.3.1.

5604.3.1 High explosives.

Explosives classified as Division 1.1 or 1.2 shall be stored in a Type 1 or Type 2 magazine, or temporarily in a Type 3 magazine if such magazine is under personal supervision of an appropriate holder of a certificate of fitness.

Exceptions:

1. Black powder shall be stored in a Type 1, 2, 3 or 4 magazine.

2. Cap-sensitive explosives that are demonstrated not to be bullet sensitive shall be stored in a Type 1, 2, 3, 4 or 5 magazine.

5604.3.1.1 Barricades.

All magazines storing high explosives shall be barricaded in an approved manner.

5604.3.1.2 Detonator magazines.

No more than 20,000 detonators may be stored in a single magazine. Only Type 1 magazines may be used for storage of 1,000 detonators or more.

5604.3.2 Low explosives.

Explosives that are not cap sensitive shall be stored in a Type 1, 2, 3, 4 or 5 magazine.

5604.3.3 Reserved.

5604.3.4 Access.

The owner or operator of a magazine shall restrict access to the magazine and the keys thereto, to the blaster and magazine keeper, provided, however, that other blasting contractor personnel and/or vendor personnel may enter the magazine when authorized and accompanied by the blaster or magazine keeper, if such other personnel require access to carry out their duties and responsibilities in connection with the storage, handling, use or transportation of explosives. The granting of access to the magazine to such other personnel is subject to restrictions imposed by the department for purposes of ensuring compliance with the requirements of this section. This provision shall not be construed to restrict department access to magazines.

5604.4 Prohibited storage.

Detonators shall be stored in a separate magazine that does not contain other explosives. Black powder, blasting powder, and smokeless propellant shall be stored in a separate magazine that does not contain detonators or other explosives.

5604.5 Location.

Magazines for storage of explosives shall be maintained and operated in accordance with FC 5604.5.1 through 5604.5.3.3.

5604.5.1 Indoor magazines.

It shall be unlawful to maintain or operate a magazine indoors for the storage of Division 1.1 explosives except as authorized by FC 5606.5.2. Indoor magazines may be maintained and operated for the storage of explosives, other than those classified as Division 1.1, in accordance with this section.

5604.5.1.1 Occupancies.

Indoor magazines for storage of explosives shall be maintained and operated only in Group F, H, M or S occupancies, when approved. It shall be unlawful to maintain or operate an indoor magazine in any building containing a Group R occupancy.

5604.5.1.2 Construction.

Indoor magazines shall be designed and installed in compliance with the following requirements:

1. The magazine shall be fire resistant and theft resistant.

2. The exterior of the magazine shall be painted red.

3. The base of the magazine shall be fitted with wheels, casters or rollers to facilitate removal from the building in an emergency.

4. The lid or door of the magazine shall be marked with conspicuous white lettering not less than 3 inches (76 mm) high and minimum 1/2-inch (12.7-mm) stroke, reading "EXPLOSIVES – KEEP FIRE AWAY – NO SMOKING".

5. The least horizontal dimension of the magazine shall not exceed the clear width of the entrance door.

5604.5.1.3 Quantity limit.

Not more than 50 pounds (23 kg) of explosives shall be stored in an indoor magazine.

5604.5.1.4 Reserved.

5604.5.1.5 Location.

Indoor magazines shall be located within 10 feet (3048 mm) of a means of egress and only on floors at or having ramp access to the outdoors at grade level.

5604.5.1.6 Limitation on number.

Only one indoor magazine shall be maintained or operated in a single building or structure.

5604.5.2 Outdoor magazines.

Outdoor magazines shall be maintained and operated in accordance with this section.

5604.5.2.1 Location.

All outdoor magazines, other than Type 3 magazines, shall be located so as to be in accordance with FC Table 5604.5.2(2), 5604.5.2(3) or 5604.5.2(4) as set forth in FC Table 5604.5.2(1).

FC Table 5604.5.2(1) Application of Separation Distance Table

a

DOTn Division

American Table of Distances for Storage of Explosives 5604.5.2(2) (DOJ 27 CFR Part 555.218)

Table of Separation Distances for Low Explosives 5604.5.2(3) (DOJ 27 CFR Part 555.219)

Table of Distances for Outdoor Magazines or Buildings Containing Explosives Division 1.4 5604.5.2(4)

1.1

X

—

—

1.2

X

—

—

1.3

—

X

—

1.4G or 1.4S

—

—

X

1.4B or 1.4S detonators

—

—

X

1.5

X

—

—

1.6

Not Applicable

Not Applicable

Not Applicable

a. Where adjacent magazines contain different classes of explosives the separation between magazines shall be as prescribed by FC Table 5604.5.2(2).

FC Table 5604.5.2(2) American Table of Distances for Storage of Explosives (As Revised June 1991)

a

Quantity of Explosives

b, e

Distances in Feet

Inhabited buildings

Public highways with traffic volume less than 3,000 vehicles per day

Public highways with traffic volume greater than 3,000 vehicles per day and passenger railways

Separation of magazines

d

Pounds over

Pounds not over

Barricaded

Unbarricaded

Barricaded

Unbarricaded

Barricaded

Unbarricaded

Barricaded

Unbarricaded

0

5

10

20

30

5

10

20

30

40

70

90

110

125

140

140

180

220

250

280

30

35

45

50

55

60

70

90

100

110

51

64

81

93

103

102

128

162

186

206

6

8

10

11

12

12

16

20

22

24

40

50

75

100

125

50

75

100

125

150

150

170

190

200

215

300

340

380

400

430

60

70

75

80

85

120

140

150

160

170

110

127

139

150

159

220

254

278

300

318

14

15

16

18

19

28

30

32

36

38

150

200

250

300

400

200

250

300

400

500

235

255

270

295

320

470

510

540

590

640

95

105

110

120

130

190

210

220

240

260

175

189

201

221

238

350

378

402

442

476

21

23

24

27

29

42

46

48

54

58

500

600

700

800

900

600

700

800

900

1,000

240

355

375

390

400

480

710

750

780

800

135

145

150

155

160

270

290

300

310

320

253

266

278

289

300

506

532

556

578

600

31

32

33

35

36

62

64

66

70

72

For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg.

a. This table applies to the storage of explosives, except for temporary storage incidental to transportation.

b. Storage of explosives in a quantity exceeding 1,000 pounds in one magazine is prohibited.

c. Reserved.

d. Where two or more storage magazines are located on the same property, each magazine shall comply with the minimum distance specified from inhabited buildings, railways and highways, and, in addition, they should be separated from each other by not less than the distances shown for separation of magazines, except that the quantity of explosives in detonator magazines shall govern in regard to the spacing of said detonator magazines from magazines containing other explosives. Where any two or more magazines are separated from each other by less than the specified separation of magazine distances, then two or more such magazines, as a group, shall be considered as one magazine, and the total quantity of explosives stored in such group shall be treated as if stored in a single magazine located on the site of any magazine in the group and shall comply with the minimum distances specified from other magazines, inhabited buildings, railways and highways.

e. The quantity of explosives refers to pounds of trinitrotoluene (TNT), or for other type explosives, the quantity of TNT with the equivalent explosive energy.

FC Table 5604.5.2(3) Table of Distances for Outdoor Magazines or Buildings Containing Explosives – Division 1.3 – Mass-Fire Hazard

a,b,c

Quantity of Division 1.3 Explosives

Distances in Feet

Pounds over

Pounds not over

Inhabited buildings, railways and public highways

Magazines

0

1,000

75

50

For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg.

a. Black powder, when stored in magazines, is defined as low explosive by the Bureau of Alcohol, Tobacco and Firearms (BATF).

b. For quantities less than 1,000 pounds, the required distances are those specified for 1,000 pounds. The commissioner may authorize storage of such explosives in quantities less than 1,

000 pounds at lesser distances from protected exposures.

c. No more than 50 pounds of explosives may be stored in a building.

FC Table 5604.5.2(4) Table of Distances for Outdoor Magazines or Buildings Containing Explosives – Division 1.4

c,d

Quantity of Division 1.4 Explosives

Distances in Feet

Pounds Over

Pounds Not Over

From Inhabited Building

From Public Railroad and Highway

From Aboveground Magazine

and Operating Buildings

a, b

50

1,000

100

100

50

For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg.

a. A separation distance of 100 feet is required for buildings of other than Type I or Type II construction as defined in the Building Code

.

b. For earth-covered magazines, no specified separation is required.

1. Earth cover material used for magazines shall be relatively cohesive. Solid or wet clay and similar types of soil are too cohesive and shall not be used. Soil shall be free from unsanitary organic matter, trash, debris and stones heavier than 10 pounds or larger than 6 inches in diameter. Compaction and surface preparation shall be provided, as necessary, to maintain structural integrity and avoid erosion. Where cohesive material cannot be used, as in sandy soil, the earth cover over magazines shall be finished with a suitable material to ensure structural integrity.

2. The earth fill or earth cover between earth-covered magazines shall be either solid or sloped, in accordance with the requirements of other construction features, but a minimum of 2 feet of earth cover shall be maintained over the top of each magazine. To reduce erosion and facilitate maintenance operations, the cover shall have a slope of 2 horizontal to 1 vertical.

c. Restricted to articles, including articles packaged for shipment, that are not regulated as an explosive under Bureau of Alcohol, Tobacco and Firearms regulations, or unpacked articles used in process operations that do not propagate a detonation or deflagration between articles.

d. No more than 50 pounds of explosives may be stored in a building.

5604.5.2.2 Detonator storage.

Magazines storing detonators, including magazines on drill boats, shall be located 100 feet (30 480 mm) from magazines storing high explosives, except as otherwise approved by the department. Where the magazine is barricaded the distance between magazines may be reduced as set forth in FC Table 5604.5.2(2).

5604.5.2.3 Tunnel or under-decking.

When a suitable aboveground storage site is unavailable, barricaded magazines, located in the excavation below decking in compliance with the distance requirements as set forth in FC Table 5604.5.2(2), may be approved. The blasting contractor for the job site shall submit to the department a plan detailing the load carrying capacity of the decking above the magazine location. For deep underground excavations, the use of a gated coyote hole with overnight storage may be approved for a magazine that is constructed to Type 1 magazine requirements.

5604.5.3 Additional requirements for Type 3 magazines.

Type 3 magazines shall comply with the requirements of FC 5604.5.3.1 through 5604.5.3.3.

5604.5.3.1 Location.

Wherever practicable, Type 3 magazines shall be located away from neighboring inhabited buildings, railways, public streets, and other magazines in accordance with FC Table 5604.5.2(2), 5604.5.2(3) or 5604.5.2(4) as applicable.

5604.5.3.2 Storage of explosives.

Explosives shall be removed from Type 3 magazines to appropriate storage magazines at the end of the work day, unless approved.

5604.5.3.3 Limitation on number.

Not more than two Type 3 magazines shall be located at the same blast site, unless approved. Where two or more Type 3 magazines are located at the same blast site, one magazine shall be used solely for the storage of detonators.

5604.6 Installation.

Magazines shall be designed and installed in accordance with FC 5604.6.1 through 5604.6.8.

5604.6.1 Drainage.

The ground around a magazine shall be graded so that water drains away from the magazine.

5604.6.2 Heating.

Magazines requiring heat shall be heated as prescribed in NFPA 495 by either hot water radiant heating within the magazine or by indirect warm air heating.

5604.6.3 Lighting.

All electric lights, electric safety flashlights or electric safety lanterns used in a magazine shall be listed as intrinsically safe or otherwise suitable for use in hazardous locations and shall comply with the requirements of NFPA 495.

5604.6.4 Nonsparking materials.

It shall be unlawful to maintain or operate a magazine, other than a Type 5 magazine, with exposed ferrous metal on any interior surface.

5604.6.5 Warning signs.

Any premises upon which explosives are stored in magazines shall have signs posted in accordance with FC 5604.6.5.1 and 5604.6.5.2. Signs shall be durable, weather resistant and of contrasting colors with a minimum letter height of 3 inches (76 mm) with a minimum brush stroke of 1/2 inch (12.7 mm).

5604.6.5.1 Job sites.

The owner shall conspicuously post on the exterior of the construction fence or other exterior wall of the premises the following sign at approved locations:

DANGER! NEVER FIGHT EXPLOSIVES FIRES – CALL 911. EXPLOSIVES ARE STORED ON THIS SITE

5604.6.5.2 Vendor facilities.

Signs complying with the requirements of FC 5604.6.5.1 shall be conspicuously posted at approved locations at vendor facilities.

5604.6.5.3 Placards.

Type 5 magazines containing Division 1.5 blasting agents shall be prominently placarded as required during transportation by the regulations of the United States Department of Transportation, as set forth in 49 CFR Part 172 and the regulations of the Bureau of Alcohol, Tobacco, Firearms and Explosives of the United States Department of Justice, as set forth in 27 CFR Part 555.

5604.6.6 Security for magazines at vendor facilities.

Vendor magazines shall be provided with the following security measures:

1. A magazine keeper shall be present on the premises and continuously monitor the magazine at all times.

2. A suitable shelter for the magazine keeper shall be provided.

3. The magazine and surrounding area shall be illuminated at night.

4. A telephone not requiring a coin to operate or other approved means to communicate an emergency shall be provided inside the shelter for the use of the magazine keeper.

5. A door alarm and holdup alarm, monitored by an approved central station company, shall be provided. The central station company shall not have the capability to shut off the alarms. The central station shall:

5.1. Record all openings and closings of the magazine doors.

5.2. Notify the department of any unusual occurrences and outages.

5.3. Provide written procedures concerning the opening and closing of magazine doors.

6. An audible and visible alarm system shall be provided that is activated by opening the magazine door, and that is continuously monitored at an approved location on the premises.

7. A local perimeter intrusion alarm shall be provided that is capable of being deactivated during normal delivery hours.

8. Type 1 magazines shall additionally comply with the following installation requirements:

8.1. Circuits used for the doors and holdup alarm shall be dedicated and use fire alarm wiring and wiring methods as set forth in the construction codes, including the Building Code and the Electrical Code. The door and holdup alarm shall use an approved transmitter, operate on alternating current, be provided with battery backup, and be monitored by an approved central station company. There shall be no control on the premises for shutting down the alarm transmission to the central station company other than disconnecting all power to the alarm system.

8.2. Electrical wiring on the premises from the magazine doors to the central station company and the magazine keeper's shelter shall be protected by rigid conduit. Overhead wiring shall use a weatherhead fitting and have a minimum 15 feet (4572 mm) clearance from the ground. Underground wiring shall be protected in galvanized conduit, buried at a minimum depth of 18 inches (457 mm) or 12 inches (305 mm) deep with 6 inches (152 mm) concrete cover.

8.3. Overhead telephone lines feeding the magazine keeper's shelter shall be protected for a distance of 15 feet (4572 mm) in height by a conduit service pipe suitably braced for strain. Underground telephone lines shall be protected in galvanized conduit, buried 18 inches (457 mm) minimum or 12 inches (305 mm) deep with 6 inches (152 mm) concrete cover.

5604.6.7 Security for magazines.

All Type 1 magazines at job sites and all other magazines storing high explosives overnight shall comply with the requirements of FC 5604.6.6.

5604.6.8 Magazine cars.

Approved magazine cars shall be used to transport explosives through tunnels to working headings.

5604.7 Operation.

Magazines shall be operated in accordance with FC 5604.7.1 through 5604.7.9.

5604.7.1 Security.

Magazines shall be kept locked and otherwise secured in the manner prescribed in NFPA 495 at all times except during delivery or removal of explosives or during inspection.

5604.7.2 Open flames and lights.

Smoking, matches, hot work, flame-producing devices, open flames, firearms and firearms cartridges shall not be allowed inside of or within 100 feet (30 480 mm) of portable or permanent magazines in which explosives are stored.

5604.7.2.1 Capping and primers.

No cartridge shall be capped or primer readied within 100 feet (30 480 mm) of a magazine.

5604.7.3 Vegetation and combustible waste.

The area located around a magazine shall be kept clear of brush, grass, vines, weeds, rubbish and other combustible waste for a distance of 25 feet (7620 mm).

5604.7.4 Combustible material storage.

Combustible materials shall not be stored within 100 feet (30 480 mm) of magazines.

5604.7.5 Unpacking and repacking explosives.

Containers of explosives, except fiberboard containers, and packages of damaged or deteriorated explosives shall not be unpacked or repacked inside or within 50 feet (15 240 mm) of a magazine or in close proximity to other explosives.

5604.7.5.1 Storage of opened packages.

Packages of explosives that have been opened shall be closed before being placed in a magazine.

5604.7.5.2 Nonsparking tools.

Tools used for the opening and closing of packages of explosives, other than metal slitters for opening paper, plastic or fiberboard containers, shall be made of nonsparking materials.

5604.7.5.3 Disposal of packaging.

Empty containers and paper and fiber packaging materials that previously contained explosives shall be disposed of or reused in an approved manner.

5604.7.6 Tools and equipment.

Metal tools, other than nonferrous transfer conveyors and ferrous metal conveyor stands protected by a coat of paint, shall not be stored or used in a magazine containing explosives.

5604.7.7 Contents.

Magazines shall be used exclusively for the storage of explosives.

5604.7.8 Compatibility.

Corresponding grades and brands of explosives shall be stored together and in such a manner that the grade and brand marks are visible. The inventory of explosives shall be stored in a manner that allows ready access for counting and checking its condition. Packages of explosives shall be stacked in a stable manner not exceeding 8 feet (2438 mm) in height.

5604.7.9 Stock rotation.

When explosives are removed from a magazine for use, the oldest usable stock shall be removed first.

5604.8 Maintenance.

Maintenance of magazines shall comply with the requirements of FC 5604.8.1 through 5604.8.3.

5604.8.1 Housekeeping.

Magazine floors shall be regularly swept and be kept clean, dry and free of grit, paper, empty packages and rubbish. Brooms and other cleaning utensils shall not have any spark-producing metal parts. Sweepings from magazine floors shall be removed from the premises and disposed of lawfully.

5604.8.2 Repairs.

Explosives shall be removed from the magazine before repairs are made to the interior of a magazine. Explosives shall be removed from the magazine before repairs are made to the exterior of the magazine when there is a possibility of causing a fire. Explosives removed from a magazine under repair shall either be placed in another magazine or placed a safe distance from the magazine, where they shall be properly guarded and protected until repairs have been completed. Upon completion of repairs, the explosives shall be promptly returned to the magazine. Floors shall be cleaned before and after repairs. Under no circumstances shall explosives be stored outside the magazine overnight.

5604.8.3 Floors.

Magazine floors stained with liquid from explosives shall be cleaned or replaced in accordance with the explosives manufacturer instructions.

5604.9 Inspection.

Magazines storing explosives shall be opened and inspected daily. The magazine keeper shall lock and otherwise secure the magazine from unauthorized entry and its contents from unauthorized access; receive and dispense explosives; and maintain complete and accurate records of the explosives received and dispensed. The magazine keeper shall personally supervise the unloading and loading of motor vehicles delivering explosives to the magazine or removing explosives therefrom. At the beginning and end of each work shift, the magazine keeper shall visually inspect and verify the quantity and condition of the explosives in the magazine, determine whether there has been an unauthorized or attempted entry into the magazine or an unauthorized removal, and document same at the end of each work shift by signing an inventory slip in the presence of the succeeding magazine keeper.

5604.10 Disposal of explosives.

Explosives shall be disposed of in accordance with FC 5604.10.1 through 5604.10.5.

5604.10.1 Notification.

The department shall be notified immediately when explosives are determined to be deteriorated or leaking or otherwise unstable or in need of disposal.

5604.10.2 Deteriorated explosives.

When an explosive has deteriorated to an extent that it is in an unstable or dangerous condition, or when a liquid has leaked from an explosive, the person in possession of such explosives shall immediately contact the manufacturer to obtain handling and disposal instructions.

5604.10.3 Destruction of explosives.

Unused explosives may be destroyed at the job site only when approved. When approved, such destruction of explosives shall be conducted by a qualified person at an approved location under the supervision of department representatives. It shall be unlawful to dispose of explosives by burning.

5604.10.4 Storage of misfires.

Explosives that fail to detonate during blasting operations shall be handled in accordance with FC 5607.18 and other approved procedures until the blaster has determined the proper method for disposal in consultation with the department.

5604.10.5 Unused high explosives.

High explosives in storage at a job site at the completion of blasting operations, or which are not otherwise to be used at the job site, shall be removed from the job site and transported to a vendor's facility. The vendor may store and supply for use unopened cases of high explosives. The vendor may not supply open cases of high explosives for use unless the explosives are packaged in an approved manner, and their condition certified in writing in an approved manner by the magazine keeper previously responsible for their storage.