SUBPARTS V
THROUGH Z AND
RELATED SAFETY
PRACTICES
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CHAPTER 11
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OUTLINE
 Subpart V: Power Transmission and
Distribution
 Subpart W: Rollover Protective Structures
and Overhead Protection
 Subpart X: Stairways and Ladders
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 Subpart Y: Commercial Diving Operations
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TRANSMISSION AND
DISTRIBUTION
 General Requirements
– All line are considered energized unless tested
– All lines must be disconnected before work
starts
– Complete
training of
Voltage
Range and
(kV)comprehensive
Minimum distance
workers
(ft)
2-15 distance based on
2 Voltage
– Minimum
15-35
35-46
46-72.5
72.5-121
2.33
2.5
3
3.5
3
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TRANSMISSION AND
DISTRIBUTION… CONT’D
 Tools and Equipments
– Proper Insulation and inspection on the handles of tools
– Conductive tools must be kept a safe distance away
from source
– Rubber protected/protective equipments should be airtested to identify holes and weak spots.
– Mechanical equipments must be grounded or
barricaded or both
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– All materials (cables, utility poles...etc) should be
marked, tested before unloading and shall be stored
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TRANSMISSION AND
DISTRIBUTION… CONT’D
 Overhead Lines
– When working on overhead lines, poles, and
other structures, all working loads shall be
calculated and bracing shall be applied
whenever needed
 Underground Lines
– When working underground, warning signs and
barriers should be placed around underground
openings
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– The atmosphere of the underground
environment must and determined to be safe
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TRANSMISSION AND
DISTRIBUTION… CONT’D
Safety Fact
A construction Company in Plummer,
Minnesota, failed to check for underground
hazards before digging and ruptured a crude
oil pipeline. Before the pipeline could be
repaired more than 200,000 gal of crude oil
had leaked into a nearby river. Not only did
this cause an environmental nightmare, but
the nearby town was evacuated and the 6
company was fined $50,000.
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PROTECTION STRUCTURES
AND OVERHEAD
PROTECTION
 All material handling
equipments (scraper,
dozers…etc) must have
proper rollover protection
– if manufactured after
1972- or by retrofitting if
manufactured before this
date
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 ROPs must be designed to
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SUBPART X: STAIRWAYS
AND LADDERS
 Requirement: the 19 inches rule
 Spiral staircases are not allowed unless the
staircase is a permanent part of the
construction
 Construction staircase requirements:
– Landings must be at least 30 in wide x 22 in
deep at every 12 ft of vertical height
– Slope angle should run between 30 to 50
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degrees
– Risers/tread heights and widths must be
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SUBPART X: STAIRWAYS
AND LADDERS… CONT’D
 Ladders
– Most of the ladders requirements are the
manufacturer requirements. From the
construction end, requirements can be
categorized as load capacity requirements and
Type
Grade
Load
safety practices
Capacity
I
IA
Industrial
Extra heavy
duty industrial
250 lb
II
Commercial
225 lb
III
household
200 lb
300 lb
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SUBPART X: STAIRWAYS
AND LADDERS… CONT’D
 Ladders and Training
All workers using ladders must be trained
to:
– Identify fall hazards relating to stairs and
ladders
– Erect, maintain, disassemble fall protection
systems
– Safe construction, placement, use, and care of
stairs and ladders
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– Maximum load capacity of ladders and ladders
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SUBPART Y: COMMERCIAL
DIVING OPERATIONS
 General Requirements
Personnel Requirements
– Proper operations and
maintenance of tools,
equipments, and
systems used in diving
– Proper diving
techniques
– Emergency procedures
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DIVING OPERATIONS…
CONT’D
Employer Requirements
Ensures all of the diving
team members have
been trained on
– First aid precautions
by the American Red
Cross or equivalent
trainer
– Physiological aspects
of working in such
conditions
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DIVING OPERATIONS…
CONT’D
 Safe Diving Procedures Manual
It is required by law for the employer to distribute
for all the diving team safe diving procedures
manual that includes the following
information beyond the actual OSHA 29
CFR 1926 subpart Y:
1.Safety procedures and corresponding checklists
for diving operations
2.Assignments and responsibility of all the diving
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team
3.Equipments procedures and corresponding
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SUBPART Z: TOXIC AND
HAZARDOUS SUBSTANCES
 OSHA requires before starting any
construction job to answer the following
questions about any hazardous chemical in
the job site:
– What is the chemical present? What is the
phase?
– Possible routes of entry into the body
– What is the hazard associated with each route
of entry?
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– How can the hazard be detected?
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HAZARDOUS
SUBSTANCES…CONT’D
Safety Fact
Removing Asbestos is one of the most
challenging renovation and demolition jobs.
OSHA standards and comprehensive,
specific, and uncompromisable.
A company in Hasting, NY cut few corners
during the process of removing Asbestos. Its
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owner was sentenced to 37 months in prison
and 3 years of supervised probation. He 15
When Safety is
Compromised!
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