Underground Construction - June 2020 - 13
they will have to install automated valves
identification. The rupture provisions
in rural, Class 1 and 2 locations.
appear to only apply to Class 3, 4 and
"PHMSA should clarify that the valve
High Consequence Areas (HCAs).
automation requirements for class 1 and
In its comments, the Pipeline Safety
2 locations outside of High Consequence
Trust, which calls itself a grassroots
Areas are opportunistic and do not require
watchdog group formed after a 1999
automation of upstream/downstream
pipeline accident in Bellingham, Wash.,
valves," they wrote.
argued, "If enacted in their current form,
The stated rationale for that position is
the proposed rules, nine years in the
the costs of putting RCVs/ACVs in remote
making, would not prevent or mitigate
areas run from $300,000 to $600,000.
the damage caused by the failure of
"These costs may be appropriate in densely
PG&E's pipeline in San Bruno, Calif.,
developed areas, but they are not commenthat led to the issuance of NTSB Safety
surate with risk in more remote areas," the
Recommendation P-11-11."
groups added.
Gas industry trade groups, on the other
Also, they don't want RCVs or ACVs
hand, want additional exemptions. The
American Gas Association (AGA), American to be required anywhere a pipeline has a
Petroleum Institute (API), American Public Maximum Allowable Operating Pressure
that's less than 30 percent of SMYS, or a
Gas Association (APGA) and Interstate
Potential Impact Radius less than or equal
Natural Gas Association of America
to 150 feet from the proposed automated
(INGAA) submitted joint comments.
Bore_Spacer-Ad_UC_2020.pdf 1 2/24/2020 10:40:27 AM
valve requirements.
One of their
biggest concerns is that
The NTSB complained the provisions
fall short of what the safety agency has
recommended over the past decade. The
safety board is also unhappy PHMSA is not
proposing to require leak detection equipment on gas transmission and distribution
pipelines as expansively as recommended
by NTSB recommendation P-11-10. Instead,
PHMSA is requiring installation of pressure
monitoring equipment at all rupture
mitigation valves on both the upstream and
downstream locations of the valve.
"This requirement incorporates an
aspect of NTSB Recommendation P-11-10
that will help operators to better detect
ruptures, which should drive further development and installation of leak detection
technology, and may help drive operators
to make decisions to improve the capabilities of their current leak detection systems
to detect non-rupture type events,"
PHMSA explained in the proposed rule. *
C
M
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UConOnline.com | JUNE 2020
13
https://www.udevices.com/
http://www.UConOnline.com
Underground Construction - June 2020
Table of Contents for the Digital Edition of Underground Construction - June 2020
Contents
Underground Construction - June 2020 - FC
Underground Construction - June 2020 - IFC
Underground Construction - June 2020 - Contents
Underground Construction - June 2020 - 4
Underground Construction - June 2020 - 5
Underground Construction - June 2020 - 6
Underground Construction - June 2020 - 7
Underground Construction - June 2020 - 8
Underground Construction - June 2020 - 9
Underground Construction - June 2020 - 10
Underground Construction - June 2020 - 11
Underground Construction - June 2020 - 12
Underground Construction - June 2020 - 13
Underground Construction - June 2020 - 14
Underground Construction - June 2020 - 15
Underground Construction - June 2020 - 16
Underground Construction - June 2020 - 17
Underground Construction - June 2020 - 18
Underground Construction - June 2020 - 19
Underground Construction - June 2020 - 20
Underground Construction - June 2020 - 21
Underground Construction - June 2020 - 22
Underground Construction - June 2020 - 23
Underground Construction - June 2020 - 24
Underground Construction - June 2020 - 25
Underground Construction - June 2020 - 26
Underground Construction - June 2020 - 27
Underground Construction - June 2020 - 28
Underground Construction - June 2020 - 29
Underground Construction - June 2020 - 30
Underground Construction - June 2020 - 31
Underground Construction - June 2020 - 32
Underground Construction - June 2020 - 33
Underground Construction - June 2020 - 34
Underground Construction - June 2020 - 35
Underground Construction - June 2020 - 36
Underground Construction - June 2020 - 37
Underground Construction - June 2020 - 38
Underground Construction - June 2020 - 39
Underground Construction - June 2020 - 40
Underground Construction - June 2020 - 41
Underground Construction - June 2020 - 42
Underground Construction - June 2020 - 43
Underground Construction - June 2020 - 44
Underground Construction - June 2020 - 45
Underground Construction - June 2020 - 46
Underground Construction - June 2020 - 47
Underground Construction - June 2020 - 48
Underground Construction - June 2020 - 49
Underground Construction - June 2020 - 50
Underground Construction - June 2020 - 51
Underground Construction - June 2020 - 52
Underground Construction - June 2020 - 53
Underground Construction - June 2020 - 54
Underground Construction - June 2020 - 55
Underground Construction - June 2020 - 56
Underground Construction - June 2020 - 57
Underground Construction - June 2020 - 58
Underground Construction - June 2020 - IBC
Underground Construction - June 2020 - BC
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