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Transcript of 1 CERTIFIED PERSON STUDY GUIDE SHAFT AND SLOPE. 2 Technical Guidance 580-2200- 011 Sinking of Shafts...
1
CERTIFIED PERSON STUDY GUIDE SHAFT AND SLOPE
2
Technical Guidance 580-2200-011 Sinking of Shafts
and Slopes for Underground Mines
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Effective Date: October 1, 2005
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Request in writing
• 30 CFR Part 77 Subpart T (Underground Coal Mines-Health and Safety Standards-Slope and Shaft Sinking).
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Shaft and Slope Construction Supervisor
• 21 years of age• 2 years practical experience sinking of slopes and
shafts• 1 year practical experience sinking of slopes and
shafts – Bachelor of Science Degree in mining engineering– Coal mine foreman or Assistant mine foreman certificate– Industrial mineral underground mine foreman certificate– An acceptable certificate of qualification issued by
another state– Trained in the detection of oxygen and explosive gases /
mechanics of all gas detection devices– Passed a written test with a score of 80 %
6
Blaster
• Possess a license issued pursuant to Chapter 210
7
Pennsylvania code
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Chapter 210
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Chapter 210.11
• 210.11 Definitions– Blaster– Blaster Learner– Blaster License– Demolition Blasting– Person
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210.13 General
• 210.13 (a) A person may not detonate explosives or supervise blasting activities unless the person has obtained a blaster's license
• 210.13(c) Upon request, a blaster shall exhibit a blasters license – Authorized Department Representative– Blaster's employer– Police Officer
• 210.13(d) Blaster's license is not transferable
11
210.14 Eligibility requirements
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BLASTERS LICENSE
• 21 YRS OLD• blaster learner
– 1YRS PRACTICAL BLASTER EXPERIENCE SHAFT AND SLOPE
• AND TAKEN DEP CLASS ON EXPLOSIVES
• AND PASSED DEP EXAMINATION FOR BLASTERS 80 PERCENT SCORE
13
210.15 License Application
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Department forms
• $50 check payable to the Commonwealth of Pennsylvania– Submitted 2 week prior to test
15
Notarized statement
• Experience as blaster leaner• Competence
16
210.17 Issuance and renewal of licenses
• Blasters license will be issued for 3 years• Within the 3 year period have had 8
Hours CEU in Department approved Blasting and Safety courses– Submit a copy of the 8 hr CEU Certificate– Submit a $30 check payable to the
Commonwealth– Renewed within 1 year of its expiration date
17
210.18 Out of State Blaster License
• Another States licensing program provides training on the storage, handling and use of explosives
• Examination that is equivalent to Chapter 210
• Copies of the other state's explosives training and exam materials
• Subtopic• Proof of License
18
210.19 Suspension, Modification and Revocation• The Department may suspend,
modify or revoke a blaster's license for violations of Chapter 210 / Chapter 211
19
ATF Background Check Sec. 555.33
20
Safe Explosives Act
• Effective date November 25, 2002• Prohibited Persons Categories;
– Aliens– Persons who have dishonorably discharged from the
military– Citizens of the US who have renounced their citizenship– Felons– Fugitives– Users of, and persons addicted to, controlled substances– Persons who have been adjudicated metal defectives or
committed to mental institutions
• All prohibited persons are permitted to apply to the BATF for relief from Federal explosives disabilities
21
Samples
• When requested by ATF, manufacturers and importers of explosives must submit samples, as well as information on their chemical composition
22
Intrastate Permit
• limited permit – farmers or construction companies that
acquire and use explosives infrequently and within their State of residence
– will allow the purchaser to receive explosive materials from an in-State explosives licensee or permittee on no more than six (6) occasions during the period of the permit
– Will be valid for one year
23
Required Industry Information
• Responsible persons are required to submit to ATF identifying information, fingerprints, and photographs
• Employee of licensees and permittees who will be possessing explosive materials must submit identifying information
• ATF must issue letters of clearance for those responsible persons and possessor employees who are not prohibited from possessing explosives
• Responsible person or employee subject o an explosives prohibition, ATF must provide information on the appeal process
24
Inspections
• ATF will have to physically inspect all ATF licensees and permittees at least once every three calendar years
• User permits and licenses, ATF must verify by visual inspection that new applicants and renewal applicants have places of storage for explosive materials
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chapter 211
26
211.101 Definitions
• access point• air blast• blast site• blast area• barricade• misfire• blaster• magazine• inner perimeter security• outer perimeter security
27
211.101 Definitions (2)
• scaled distance• scaled table of distance• required distance for seismograph
readings
28
211.112 Magazine license and fees
• 211.112(a) Shall store explosives in a magazine licensed by the Department– A person may not construct, install or modify a
magazine
• 211.112(b) magazine license specifications – types of explosives– quantities of explosives– conditions to comply with other standards
• 211.112(c) license expires DEC 31 each year
29
211.113 Application Content
• Applicant's name, address and telephone number• Contact person• Types and quantities of explosives• Map, plan or sketch of the site location showing
– nearest buildings– nearest railways– nearest highways – existing barricades– proposed barricades
• Plan showing the design and specifications of the magazine
30
211.113 Application Content (2)
• Plan showing the design and specifications, dimensions and locations of all security measures
• The latitude and longitude of outdoor magazines– except Type 3
• The latitude and longitude of indoor magazines containing high explosives
31
211.114 Displaying the license
• Magazine license or legible copy shall be conspicuously displayed– Shall be displayed inside the magazine
or adjacent to the magazine
32
211.115 Explosive storage
33
27 CFR Part 555 Subpart K (relating to storage), are incorporated herein by
reference.
34
211.115(a1) Classify explosives
35
211.115(a2)Determine which class of explosive may be stored in each
type of magazine
36
211.115(a3)Determine quantity of explosive
stored
37
211.115(a-4) Determine construction standards
38
211.115(a5) Site the magazine
39
211.115(a6) Specify maintenance and
housekeeping
40
211.115(a7) Grant variances
41
Security measures (211.115.d)
42
211.115(d1) Each magazine site shall be
inspected at least daily at approximately 24-hour
intervals
43
Equipped with electronic intrusion detection devices
44
Inspected daily (24 hour intervals)
45
magazines containing no explosive are not required
to be inspected• Must reflect date last explosives
were removed
46
Each inspection
• Include the magazine• Access points and perimeter security
– Inspection can be in person or electronically by remote cameras
• Record of Inspection– Maintained 3 years– Name of person – Date and time inspection began /ended– Remarks– Action taken on problems– Dates no inspection / no explosives
47
Magazine and outer perimeter gates at the site
are equipped with electronic intrusion detection devices
48
Outer perimeter
49
Obstructs, wheeled vehicles
50
surround the entire magazine site
• 25 feet away from the exterior of any magazine
• 25 feet away from the inner perimeter security measures
51
Subsection (g)
52
Sufficient number of personnel assigned to physically insect each
magazine once every hour• All persons with communications
capable of providing direct verbal communications with Police Dept. or another person capable of contacting Police
53
Closed Circuit Television (CCTV)
• Continuously monitoring the entire outer perimeter
• Any portion of the outer perimeter that is not protected by another measure
• Images shall be recorded and maintained at least until magazine integrity is confirmed
• Latest output images of all CCTV cameras shall be viewed at least once every hour by a person having direct verbal communications
54
Electronic intrusion detection devices
• Microwave sensors• Seismic detectors• Vehicle detectors• Alarms or infrared motion detectors• Zone of detection shall encompass entire outer
perimeter• All systems shall provide initial notification of an
alert within 15 minutes of an event and onsite presence in response to an alert within 1 hour
• All systems shall have backup power and provide an alert
55
Earthen Barrier
• 7 feet in height• Constructed to obstruct access, to
the greatest extent possible, by wheeled vehicles
• Made of loose soils the earthen barrier shall be compacted
• Vegetated
56
Boulder Barrier
• Boulders shall be of a size and weight to deter, to the greatest extent possible, defeat of the barrier by wheeled vehicles
57
Highwall Barrier
• minimum of 7 feet in height– Face or slopes are sufficient to obstruct,
to the greatest extent possible, unauthorized access by wheeled vehicles
58
Natural Barrier
• Composed of natural terrain features which are impassable, to the greatest extent possible, to wheeled vehicles
59
Fencing Systems
• Constructed of members that of sufficient size, strength and anchorage – To deter, to the greatest extent
possible, the fencing system from being bent over, broken through or uprooted by a wheeled vehicle
60
Inner Barrier 211.115
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6 feet away from exterior of magazine (211.115-4 )
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25 feet inside and away from the outer perimeter
security (211.115-4)
63
Inner perimeter security can be met by measures
approved by the Department as provided in
subsection (g)
64
Personal assigned to physically inspect each
magazine• Once every hour• Equipped with communications
device capable of providing direct verbal communications– Police Department– Another person with the ability to
contact the Police Department
65
CCTV
• Images shall be recorded and maintained at least until magazine integrity is confirmed during the next required site inspection
• The latest images of all CCTV cameras shall be viewed once every hour by persons having direct verbal communication with the Police Department
66
Electronic intrusion devices
• Shall be installed on each magazine containing high explosives or detonators
• Installed on all magazine doors• Infrared motion detectors and other
similar devices shall be installed on the interior of each magazine
67
Microwave sensors, seismic sensors
• Zone of detection shall encompass the inner perimeter, or any portion of the inner perimeter that is not protected by another measure
68
All systems
• Shall have the capability of providing initial notification of an alert within 15 minutes of an event
• An on site presence in response to an alert with 1 hour
• Backup power supply– Shall provide and alert in the event of
power loss or a compromise of the system integrity
69
Highwall
• minimum of 20 feet in height• face or slopes are sufficient to
obstruct, to the greatest extent possible, access by unauthorized persons.
70
Fence construction• minimum of 9 gauge chain link fencing
– maximum 2-inch mesh that is kept in a condition which maintains its original functionality.
• Buried at least 1 foot at the base– Or equipped with a minimum 1.66 inch outside diameter
bottom rail• Minimum height of 8 feet above the ground• Top rail with a minimum 1.66 inch outside diameter• Firmly anchored posts 10 feet or less on center
– End, corner and pull posts shall have a minimum outside diameter of 2.875 inches if round or 2.5-inch square
– Intermediate posts shall have a minimum outside diameter of 2.375 inches if round or 2.25-inche C-Section.
– Posts shall be set in concrete at a minimum depth of 33 inches.– Post holes shall be a minimum of 12 inches in diameter and
completely filled with concrete
71
Fence construction (2)
• Outriggers at the top– concertina razor wire attached
• Concertina razor wire attached on the inside at the bottom
• Gates– as many gates as necessary to provide for the
safe exit in event of an emergency
• Vegetation– Trimmed or suppressed to a distance of 6 feet
from each side of the fence
72
Inner perimeter security gates
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Constructed at all access points
• firmly anchored posts• good condition• Padlocked whenever the site is
unoccupied
74
Gates shall be constructed of a minimum of 9 gauge chain link fencing with a maximum 2-inch mesh
75
Gate frame members minimum outside
diameter of 1.9 inches if round or 2.0-inch if square
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Gate Posts with a minimum 6.625-inch
outside diameter
77
Posts set in concrete at a minimum depth of 42
inches
78
Postholes shall be a minimum of 16 inches in diameter and filled with
concrete
79
Outriggers at the top with concertina razor wire
80
Two Locks
• Separate hasps and staples• Hood of at least 1/4-inch thick steel
– must prevent sawing or lever-cutting on the locks, hasps, and staples
• Each lock shall have at least five tumblers – case-hardened shackle of at least 3/8 inches in
diameter
• Lock and chain used to secure gate– minimum specification of the chain shall be 3/8
inch Grade 70, Transport
81
Outer perimeter security gates
82
Constructed at all access points
83
Deter to the greatest extent possible, defeat of
the gate by wheeled vehicles
84
firmly anchored posts
• Guideposts shall be a minimum 6.625-inch outside diameter
• Posts set in concrete at a minimum depth of 42 inches
• Postholes shall be a minimum of 16 inches in diameter – filled with concrete
• Department may approve, in writing, least equivalent security
85
good condition
86
Padlocked whenever the site is unoccupied
87
Two Locks
• Separate hasps and staples• Hood of at least 1/4-inch thick steel
– must prevent sawing or lever-cutting on the locks, hasps, and staples
• Each lock shall have at least five tumblers – case-hardened shackle of at least 3/8 inches in
diameter
• Lock and chain used to secure gate– minimum specification of the chain shall be 3/8
inch Grade 70, Transport
88
"No Trespassing" signs
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Placed around outer perimeter of site
90
Shall be spaced so that, except for corners,
adjacent signs are visible
91
Warning signs shall be placed at all access points
• Shall provide notice of private property
• No trespassing • Providing a notice substantially
conforming to the following: "Danger, never fight explosives fires, explosives are stored on this site"– to warn first responders and public– Shall provide an emergency contact
phone number
92
Signs shall be well maintained
93
Signs shall be placed so that a bullet passing
directly through the sign will not impact a magazine
94
Signs may not be obscured by vegetation or
other obstructions
95
Constructed of a durable, weather-resistant material
• Letters and numbers shall be a minimum height of 2 inches
96
In addition to outer perimeter security
97
All portable magazines being used as stationary
magazines • Having an a volume of less than 3
cubic yards – shall be immobilized by fastening the
magazine securely to the earth or terrain
– sufficient to prevent displacement of the magazine by wheeled vehicle
98
Requirements may be satisfied by any single layer
of perimeter security measures that obstructs
• unauthorized access to the magazine wheeled vehicles
• Access by unauthorized persons• 25 feet away from the exterior of any
magazine• 6 feet from any magazine
99
Magazines shall be constructed according to
the construction standards found in 27 CFR Part555,
Subpart K (relating to storage) with the following
additions
100
Mobile type 5 magazines being used as stationary magazines for more than 1 year must be located
within the outer perimeter security
101
Immobilized in accordance with 27 CFR 555.211
(relating to construction of type 5 magazines
102
Fastened securely to earth or terrain feature to
prevent movement of the magazine by a motor
vehicle
103
Motor vehicles used to transport bulk blasting
agents that are left unattended at a magazine
site
104
Must have two department approved methods of
disabling the vehicles to render tem effectively
immobilized
105
Vehicles must be kept within the outer perimeter
security
106
Disabling methods may include
• Steering locking device• Pedal locking device• Fuel or electrical system disablers• Other equivalent disabling measures
approved by the Department• Systems of pumps or tanks, or both, used
to store, mix or dispense bulk blasting agents at magazine site– Shall be equipped with locks – Shall be constructed to prevent the
unauthorized removal of blasting agent from the system
107
Person who stores explosive materials
108
Shall notify both the local police having jurisdiction
and the Pennsylvania State Police
• Notification made in the manner of and in addition to the notification requirements in 27 CFR 555.201 (f) (relating to general)
109
Shall immediately notify the Department, Pennsylvania
State Police, and local Police• Evidence is discovered of Break-in or theft at the magazine• an attempted theft or break-in has occurred• Security measures required by this section have been
breached or disabled or disabled or partially breached or disabled
• Short-term partial breaches of security of less than 48-hour duration need not be reported under this subsection if all the following apply:– Partial breach was due to equipment failure or accidental or
natural causes– An account of the partial breach was recorded under
paragraph 1– Immediate measures are being taken to repair or replace the
partial breach
110
Notification to State and Local police are in addition
to any notification by agencies of the United
States• Immediately upon June 18, 2005, the
inspection and notification requirements shall be implemented
• Within 180 days of approval of the plan outer or inner perimeter security measure requirements shall be implemented
• Within 360 days of approval of the required plan the remaining perimeter security measures required
111
Unauthorized persons exhibiting suspicious
behavior are observed in the vicinity of the
magazine
112
Inventory records indicate that explosive material is missing and unaccounted
for
113
Permissible explosives / Shot -firing units 77.1909
114
Evacuate personal from shaft prior to firing shot
• ALL PLANS SUBMITTED TO MSHA WILL BE SUBMITTED TO THE STATE
115
Chapter 211 Incorporates Sub Part k
116
211.122 Permit to sell explosives
• Identify the applicant's name, address, telephone number and type of business
• Identify a contact person• Specify type of explosives to be sold• Specify the type of explosives to be sold• State whether the applicant will purchase or
manufacture the explosives to be sold• Permits to sell explosives are not
transferable• Permits to sell explosives expire on April 30
117
211.123 Permits to purchase explosives
• Identify the applicant's name, address, telephone number and type of business
• Identify a contact person, including name, address, telephone number and type of business
• Identify the location and license number of the magazine to be used for storing the explosives
• Specify the type of explosives that will be purchased
• Specify whether the explosives are being purchased for sale or use by the permittee
118
211.123 Permits to purchase explosives (2)
• Permits to purchase explosives are not transferable
• Permits to purchase explosives expire on April 30 of each year
119
211.124 Blasting Activity Permit
• Blast-in-charge– Supervise the blasting activity– Two people present to fire blast– Blaster-In-Charge and up to Six Assistants
• Operating Equipment– Within 50 feet 211.154
• Blaster shall prepare application for blasting activity report– Applicant's name, address, telephone number, type business– Contact person / name, title, telephone number– Identity of subcontractor who will perform the blasting activity– Type of explosive used– Maximum amount of explosives that will be detonated per delay interval of less than 8
milliseconds– Maximum amount of explosives that will be detonated in any one blast– Map indicating the location where the explosives will be used– Purpose for which the explosives will be used– Location and license number of magazine that will be used to store the explosives– Description of how the monitoring requlirements will be satisfied– 3rd part general liability insurance in the amount of $300,000 or greater per occurrence.– anticipated duration of blasting activity – Anticipated days of the week and times when blasting may occur– Distance and direction to the closest building– Printed name, signature and license number of blaster– Proof of notification of blast to resident's within 200 feet– Blast activity permits are not transferable
120
211.125 Blasting permit-by- rule
• Blasts are designed and performed for a scaled distance of 90 or greater
• No more than 15 pound of explosives are detonated per delay interval of less than 8 milliseconds
• Total charge weight per blast does not exceed 150 pounds
• Person notifies the Department – verbally– in writing
121
211.131 Sales Record
• Shall keep accurate record of every sale of explosives for 3 years– Shall identify the purchaser's name and
address– Department purchase permit number – Date of the sale– Amount and types of explosives
122
211.132 Purchase records
• Shall keep a record of all purchases of explosives for 3 years– Records shall identify the date– types and amounts of explosives
purchased– name and address of the seller
123
211.133 Blast reports 211.133
124
Blaster-In-Charge
• Shall prepare a report for each blast– Sufficient information to reconstruct the
conditions and events surrounding a blast
– Maintained 3 years
125
Location of blast and monitor readings
126
Name of blasting activity permittee
127
Blasting activity permit / mining permit number
128
Date and time of blast
129
Printed name , signature and license number Blaster-In-Charge
130
Type of material blasted
131
Sketch showing
• number of holes• burden• pattern dimensions• point of initiation
132
Diameter / Depth of blast holes
133
Height / length of stemming
134
Types of explosives used
• Arrangement in blast holes
135
Total weight in pounds of explosives and primer
cartridge
136
The maximum weight in pounds of explosives detonated per delay period of less than 8
milliseconds
137
Type of circuit, if electric was used
138
Direction / Distance in feet from blast site to nearest
building
139
A description of the nearest building not
owned based on local landmarks
140
Scaled Distance
141
Weather Conditions
142
Direction from which the wind was coming
143
Measures taken to control flyrock (whether or not
mats were used)
144
Total quantity and type of detonators and delays
used
145
Number of individuals on blast crew
146
Monitoring records shall be made part of blast report within 7 days
147
Misfire
148
211.141 Transportation of Explosives
149
Fueling
150
Repairs
151
Fire Extinguishers
152
No Smoking
• 100 feet
153
Loading / Unloading
154
IME #22 Separation
• Non sparking tools• Wooden bed on vehicle • Separated from tools
155
State Inspected Vehicles
156
Vehicle Exhaust
• avoid hot gases and sparks• in tack
157
Fire Extinguisher
• 10 BC or more– Readily Accessible
158
Engine Off / Tires Chocked
159
No Smoking within 100 ft
• NO SMOKING signs posted while parked
160
DOT Placards
161
Immediately
162
Less than 2000 pounds of explosives
• Open Body– Sides and ends high enough– fire resistant tarpaulin– magazine attached to vehicle
163
More than 2000 pounds of explosives
• Closed Body
164
No firearms, combustible materials
165
Damaged or Deteriorated explosives
• Manufactures Recommendations
166
211.151 Prevention of Damage
167
flyrock or damage to real property
• Blaster-in-charge– report to Department within 4 hours
168
Air Blast
• 133 dbl peak
169
Scaled Distance
• 90
170
Peak Particle Velocity
• 2 inches per second
171
211.152 Control of Noxious Gases
• Health and Safety of individuals– Evacuate people– interrupt path of gas flow– Vent gases to atmosphere
172
211.153 Handling Explosives
173
Nonferrous, non sparking tools
174
No Smoking
• within 100 ft of where explosives are used or stored
175
Damaged or Deteriorated Explosives
• destroy as per Manufacturer recommendations
176
Cast Boosters
• detonators shall not be forced into cartridges of explosives or cast boosters
• detonators shall be completely inserted into the cartridge of explosive
• detonators shall be completely inserted into detonator well of a cast booster
177
licensed magazine
• Stored– Explosives may not be left unattended– Kept under control and supervision of
Permittee
178
Loaded Blast
• loaded blast shall always be under the continuous observation of the blaster-in-charge or a designee
179
Blast Site
• No shooting or carrying of ammunition or firearms
180
Electric Lines
• test shall be made for stray electrical current
• electric blasting caps may not be used in excess of 50 milliamperes
181
Packages of Explosives
• shall not be thrown or slid along floor, over other packages, and handled roughly
• Non-sparking tools
182
Electrical Storms
• Area clear of all people• Guards posted to all approaches to
prevent trespass
183
Explosives
• damaged and deteriorated shall not be used
• May not be abandoned
184
211.154 Preparing the Blast
185
211.154(a) Blaster-in-charge
186
211.154(a) Must be designated by Blasting
Activity Permittee
187
211.154 (a)Shall control and supervise the blasting
activities
188
211.154 (a) Responsible for all effects of the blast
189
211.154(c) May not prepare or detonate a blast unless another
person is present, ready to render assistant in the event of an accident or
injury
190
211.154(d) Shall make every effort to determine
the condition of the material to be blasted
from the individual who drilled the blast holes or
from the drill log.
191
211.154(e) Only blaster in charge, other blasters, and up to six assistants per blaster may be at a
blast site once loading of blast holes begins
192
211.154(f) While loading a blast hole the following shall
be followed:• 211.154(f-1) Ferrous material may not be
used– This includes the use of steel casings, ferrous
tools and retrieving equipment
• 211.154(f-2) Nonsparking tamping sticks• 211.154(f-3) Pneumatic loading device,
every precaution shall be taken to prevent an static electricity– Loading operation shall be stopped immediately
if static electricity or stray electric currents are detected
193
211.154(f) While loading a blast hole the following shall
be followed: (2)• 211.154(f-4) Blast holes shall be carefully
checked for obstructions– Explosives may not be forced past and
obstruction in blast hole
• 211.154(f-5) Each blast hole shall be logged and recorded on the blast report
• 211.154(f-6) Blast hole containing loose dynamite shall be stemmed (not tamped)
• 211.154(f-7) The Department may specify the type and amount of stemming
194
211.154(g) Before connecting blast holes, all
activity within the blast area shall cease
• All nonessential persons shall retreat to a safe place
• The blaster-in-charge shall determine the blast area
195
211.154(h) Primers shall be prepared only at the hole to
be loaded• Primers shall be prepared only at the
hole to be loaded,immediately prior to loading
• Components of the primer are to be kept separated at the collar of the blast hole
• The primer may not be slit, dropped, deformed or carelessly handled and tamped or forced into blast hole
196
211.154(I) Upon completing the loading of a blast hole
• Wood, paper or other materials used to pack explosives shall be inspected for explosives and removed to and isolated area
• materials may be burned after the blast has been fired
• Persons may not be within 100 feet of burning materials
197
211.154(j) Measures shall be taken to reduce the
chance of flyrock• Use of blasting mats or other
protective devices• Blasting to an open, vertical face,
checking the face for loose, hanging material or faults prior to loading the blast holes
198
211.154(k) Only enough explosives for the blast may be brought to the blast site
• Surplus explosives may not be stored in the blast site
199
211.154(l) Blast holes shall be checked to ensure that it is cool and does not contain any hot material or smoldering material
from drilling hole
200
211.154(m) Abrasive or sharp stemming shall be
avoided
201
211.154(n) Blasting activities may not be
conducted within 800 feet of a public roadway
• Precautionary measures including stopping or slowing of traffic and posting signs
202
211.154(b) Equipment
• Only equipment necessary loading Blast holes shall operate within 50 ft of the blast site
203
211.155 Preblast measures
204
Prior to detonating a blast, the blaster-in-charge shall:
205
211.155(1) Ensure that all excess explosives have been removed from the
blast area
206
211.155(2) Inspect the blast site to ensure that connections are proper
207
211.155 (3) Ensure that the blast area is cleared
an safeguarded
208
211.155(4) In addition to warning signal, notify all
persons
209
211.155(5) Ensure that precautions are in place to protect the pubic on public
roads
210
211.155(6) At least 1 minute but no more than 2 minutes prior to detonation
• Sound a warning signal of three blasts– each lasting 5 seconds
• Warning signal shall be of sufficient power to heard 1,000 feet from the blast site
211
211.156 Detonating the Blast
• 211.156(a) Blast may be detonated only between sunrise and sunset– Unless the Department authorizes
• 211.156(b) Only the blaster-in-charge may detonate a blast
212
211.157 Postblast measures
213
211.157(a) After a blast has been detonated, no one may return to the
blast area until all smoke and fumes have dissipated
214
211.157(b) Blaster-in-charge shall return to and inspect the blast site to
ensure it is safe
215
211.157(c) the blaster-in-charge shall sound an all-
clear signal• One long blast lasting 10 seconds
– All-clear signal shall be heard 1,000 feet from the blast site
216
211.157(d) Blaster-in-charge shall determine if a
misfire has occurred• Shall take actions necessary to
render the blast site safe• The blast site shall be made safe
before drilling or muck removal begins
217
211.157(e) Blaster-in-charge suspects that
undetonated ammonium nitrate/fuel mixture remains• The muck pile shall be wetted down
with water before any digging • Special attention shall be given to
primers, other explosives or detonators are present in the muck pile
218
211.157(f) Blaster-in-charge shall immediately complete the blast report
219
211.157(g) Blaster-in-charge shall notify the
Department within 24 hours of a misfire
• A copy of the blast report shall be forwarded to the Department
220
211.158 Mudcapping
• 211.158(a) Mudcapping is allowed only when the blaster-in-charge determines that drilling would not be safe– No more than 10 pounds of explosives
shall be used for a blast
221
211.159 Electric detonation
222
211.159(a) Electric blasting caps shall be tested for
continuity with a blaster's galvanometer or Blaster's
Multimeter • 211.159(a-1) Before the primers are
made up• 211.159(a-2)After the blast hole has
been loaded but prior to stemming• 211.159(a-3) As the final connecting
of the circuit progresses
223
211.159(b) When shunt is removed from electric
blasting cap leg wires, the exposed wires shall be
reshunted
224
211.159(c) Electric blasting caps may not be employed near overhead
electric lines
225
211.159(d) Blasting caps may not be reused if the
leg wires are broken
226
211.159(e) Leg wires shall extend above the top of the
blast hole• Wire connections and splices are not
allowed in the blast hole
227
211.159(f) Only solid wire shall be used in a blasting
circuit• Stranded wire is prohibited
228
211.159(g) Electric detonation near public
roads • Signs shall be erected at least 500
feet from the blast area– Reading "Blast area -shut off all two -
way radios"
229
211.159(h) Permissible blasting machines shall be used to detonate the blast
230
211.159(i) Blasting circuit shall remain shunted until
the time for detonation• Unless the circuit is being tested• connections are being made
231
211.159(j) All blasting machines shall be
calibrated every 30 days by procedures
recommended by the manufacturer or supplier
232
211.159(k) Blaster-in-charge shall determine that there is adequate
current to properly energize the detonators
233
211.160 Nonelectric detonation
• Nonelectric initiation systems shall be checked and tested in accordance with manufacturer recommendations
234
211.160 Detonating cords
235
211.161(a) Shall be cut from the supply roll immediately after
placement in the blast hole
236
A sufficient length of downlines shall be left at the top of the blast ole for connections to trunk lines
• The supply roll shall be immediately removed from the site– Scrap pieces of detonating cord shall be
destroyed after connections are made
237
211.161(b) Trunk line shall be covered with at least
12 inches of earth or sand
238
211.161(c) Detonating cord may not be spliced if the splice will fall within a
blast hole
239
211.162 Safety Fuse
• 211.162(a) Shall be long enough to provide a burn time of 120 seconds or longer
• 211.162(b) Blaster-in-charge shall conduct a test burn– Test burn will utilize at least a 12 inch section of
fuse
• 211.162(c) A proper crimping tool shall be used to crimp a blasting cap to a safety fuse– A blasting cap may not be attached to a safety
fuse in or within 10 feet of a magazine
240
211.171General provisions for monitoring
• 211.171(a) Scaled Distance of a blast is 90 or numerically less at the closest building not owned or leased
• 211.171(b) Blasting without monitoring • 211.171(c) A ground vibration and airblast
record of each blast shall be made part of the blast report
• 211.171(d) The trigger for ground vibration shall be set at a particle velocity of no more than .25 inches per second
241
211.171General provisions for monitoring (2)
• 211.171(e) A printout from the instrument shall be attached to the blast report– the printout shall provide date and time
when instrument was turned on and off, set trigger levels
242
211.172 Monitoring instruments
243
211.172 Monitoring instrument shall provide a permanent record of each
blast• 211.172(1) A monitoring instrument for recording
ground vibration shall have– Frequency range of 2 Hz to 100 Hz– Particle velocity range of 0.2 to4.0 inches per second or
greater– An internal dynamic calibration system
• 211.172(2) A monitoring instrument used to record airblast shall have– A lower frequency limit of 0.1 ,2.0 or 6.0 HZ– An upper end flat-frequency response of at least 200 Hz– A dynamic range that, at a minimum, extends from 106
to 142 dbl
244
211.172 Monitoring instrument shall provide a permanent record of each
blast (2)• 211.172(3) Shall be calibrated
annually– Also when repairs are made– Calibration procedures and
documentation of calibration shall be made available for review by the Department
• 211.172(4) Nonalterable calibration sticker affixed to the instrument
245
211.173 Monitoring records
246
211.173(a) Everyone using the monitoring instrument
shall be trained• A record of the training is to be
maintained and available for review by the Department
247
211.173(b) Monitoring records at a minimum shall
contain• 211.173(b-1)Calibration pulse on each of the
mutually-perpendicular ground vibration traces
• 211.173(b-2) The time history of particle velocities of three mutually perpendicular round vibration traces and one air-overpressure trace, including time base, amplitude scales and peak values for all traces
• 211.173(b-3) The results of a field calibration test for each channel
248
211.173(b) Monitoring records at a minimum shall
contain (2)• 211.173(b-4) The frequency content of all vibration signals using either single degree of freedom (SDF) response spectrum or half-cycle zero-crossing analysis method
• 211.173(b-5) Frequency versus particle velocity plots
• 211.173(b-6) The name and signature of the individual taking the recording
• 211.173(b-7) The location of the monitoring instrument, date and time of the recording
249
211.173(b) Monitoring records at a minimum shall
contain (3)• 211.173(b-8) The last calibration
date of the monitoring instrument
250
211.173(c) If the Department questions the
validity of a ground vibration or airblast record or the interpretation of the
record, the Department may require
• Ground vibration or airblast recording to be analyzed or certified by an independent, qualified consultant– It shall be performed and included with
the blast report within 30 days
251
Title 25 Chapter 87
252
Public highways and entrances to the operation
• Barricade / Guard– If highway is within 1,000 feet of blast to
be shot
253
30 CFR PART 77 SUBPART T
254
Top man on Duty
255
check in and out system
256
Examinations 77.1901
• Pre shift - 90 minutes prior to start of shift– Certified Person
• On shift while men are at work – Certified Person
• Before and after Blasting– Certified Person
257
all exams must include 77.1901
258
259
Continuous Monitoring of Atmosphere
260
Check Coping
261
• Air Reading at Fan– Magnahelic Reading
262
• Check Service Lines
263
check water ring gas test
264
examine ribs below concrete
265
make gas test around ribs
266
make gas tests at bottom
• methane• oxygen• carbon monoxide
267
Correct all hazards found on pre shift / on shift exam
268
Record keeping
• air reading (CFM)(Location)• gas readings
– CH4 and O2 deficiency CO approved devices 77.1901-1
• violations or hazards observed• miss fires• corrective actions taken• date / time • signature
269
surface area exam 77.1901
• tripping and stumbling obstacles• general housekeeping• illumination• walk through compressor house
– note temperature– airline leaks – unusual smells– oil spillage– Subtopic
• record examination
270
Excessive gas encountered 77.1901
• 1.0 % Methane– Make changes or adjustment to ventilation– Do not start any equipment– De-energize power– Re-examine area
• 50 PPM Carbon Monoxide– Make changes or adjustment to ventilation– Re-examine area
• 19.5% Oxygen
271
Excessive gas encountered 77.1901 (2)
• 1.5% Methane– Remove all personal– De-energize equipment– Ventilate– Re-examine area
272
Diesel 77.1902 - 1
• Permissible Part 36
273
Hoists 77.1903
274
Communications 77.1904
• Two independent means of signaling– one audible – signal codes posted– communications tested daily
275
Hoist Construction 77.1907
• Hooks shall be self-closing
276
Daily Inspections 77. 1906
• Insure daily inspections are completed and signed
• Records to be maintained for 1Year
277
Hoist Installation 77.1908
278
Hoist rope suspended from substantial housing
279
Shaft guide and guide attachments installed
77.1908-c
280
emergency escape 77.1908-f
• hoist• Ladder
281
embark / disembark landing over shaft
77.1908-e
282
Hoist bucket
• Shall not ride rim or loaded bucket 77.1908-g
• Mantrip number of people77.1908-h– Speed 500 fpm / 200fpm within100 ft of
stop– speed posted for hoistman– hoist stopped within 15 ft. of landing – all bucket shall be trimmed
283
Wire Ropes 77.1430
284
visual examination 77.1433
• every 14 calendar days• broken wires, stress points,
distortions
285
End attachment retermination 77.1437
286
Drum End Attachment 77.1436
• attached securely to drum• minimum of three full turns of wire
rope on drum
287
Load end attachments 77.1435
288
Retirement criteria 77.1434
• 6% wear• Broken wires• Subtopic
289
Minimum rope strength 77.1431
290
Initial measurement 77.1432
• After initial stretch - before wear is shown
• Baseline measurement – three measurements
• Records shall be retained with cable
291
Hoistman Qualification
292
Ventilation 77.1911
293
Mechanical ventilation
294
Installation• On Surface• Fireproof• Design to permit air reversal• Equipped with automatic signal device• Offset 15 feet• duct work grounded to prevent electrical • Duct work extended as close a possible to
ventilate properly• qualified person designated by the operator to
maintain ventilation system• Fans shall operated continuously while men are
underground– Accidental stoppage
295
examined before each shift
• Quantity of air • Measured by Certified Person• Recorded
296
Electrical equipment 77.1914
• Permissible• Flame resistant• Approved by Bureau of Mines
297
Combustible Materials 77.1915
• Compressed and liquefied gas, oil gasoline and other – Not stored within 100 feet of shaft or
slope
• Other combustible materials and supplies– Not stored with 25 feet of shaft or slope
• Oily rags,waste, waste paper shall be stored in metal containers
298
Welding, cutting; Fire Protection 77.1916
• One portable fire extinguisher • Welding, cutting in the vicinity of any
shaft or slope• Exams for Methane
– 1,0% Methane
• Noncombustible barriers shall be used