Ultra High Pressure Seal

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Ultra High Pressure Seal

• October 2008

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Introduction

• Cooper Crouse-Hinds is releasing a new Ultra High
  Pressure Seal to provide protection up to 1500
  PSI.
• Our current offering has only two options 50PSI
  and 500PSI.
• The new product is easy to install and will save
  labor time
• It will also help you meet the higher pressure
  code requirements for secondary process seals.

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What is a Process Seal?
Classified Area
Ordinary Location
A secondary process seal will prevent this
leakage and allow gases to leak into the
hazardous area, which is acceptable
A normal boundary seal will allow gases to leak
into the ordinary location.
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Primary and Secondary Seals

• Primary Seal
• Isolated process fluids from electrical system
• Secondary Seal
• Installed between primary seal and wiring
• Prevents process fluids and gases from migrating
  into ordinary locations if primary seal fails

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Why Use an Explosionproof Seal?

• Explosionproof conduit and cable seals prevent
• Transmission of explosions
• Passage of fluids and gases at atmospheric
  pressures
• Conduit and cable seals are not designed to
  prevent the passage of gases under high pressure

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Pressure Comparisons

• Explosionproof seals are tested to withstand 0.2
  psi of continuous pressure

psi

Explosionproof Seal
0.2
Good Sneeze
2
Process Vessel
20
Gas Fluid Transmission
400
Current Secondary Process Seal
500
Ultra High Pressure Seal
1500
Explosionproof seals are not designed to prevent
leakage from continuous fluid pressure
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Mishaps Caused by Lack of Process Seals

• 1964 AMOCO Hazards of Electricity recognizes
  conduit seal leakage problems
• 1970 Cove Point, Maryland
  LNG Facility
• 2000 East Hereford, Quebec Compressor Station

Click image
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NEC Code Requirements
(3) Canned Pumps, Process, or Service
Connections, and So Forth. For canned pumps,
process, or service connections for
flow, pressure, or analysis measurement, and so
forth, that depend on a single compression seal,
diaphragm, or tube to prevent flammable or
combustible fluids from entering the electrical
conduit system, an additional approved seal,
barrier, or other means shall be provided to
prevent the flammable or combustible fluid
from entering the conduit system beyond the
additional devices or means if the primary seal
fails. The additional approved seal or barrier
and the interconnecting enclosure shall meet the
temperature and pressure conditions to which they
will be subjected upon failure of the primary
seal, unless other approved means are provided to
accomplish the purpose in the preceding
paragraph. Drains, vents, or other devices shall
be provided so that primary seal leakage is
obvious. FPN See also the fine print notes to
505.16. Process-connected equipment that is
listed and marked Dual Seal shall not require
additional process sealing when used within the
manufacturers ratings. FPN For construction and
testing requirements for dual seal process,
connected equipment, refer to ANSI/ISA-12.27.01-20
03, Requirements for Process Sealing Between
Electrical Systems and Potentially Flammable or
Combustible Process Fluids.
501.15(F)(3)
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National Fire Code Requirements
7.6.3.2 A primary seal shall be provided between
the flammable fluid system and the electrical
conduit wiring system. If the failure of the
primary seal allows the passage of flammable
fluids to another portion of the conduit or
wiring system, an additional approved seal,
barrier, or other means shall be provided to
prevent the passage of the flammable fluid beyond
the additional device or means if the primary
seal fails. 7.6.3.4 Where secondary seals are
used, the space between the primary and secondary
seals shall be continuously vented to the
atmosphere. Similar provisions shall be made on
double-integrity primary sealant systems of the
type used for submerged motor pumps.
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Standards

• ISA Standard
• ANSI/ISA-12.27.01-2003
• Requirements for Process Sealing Between
  Electrical Systems and Flammable or Combustible
  Process Fluids

• CSA TIL
• Conduit and Cable Fittings for Use in Hazardous
  Locations. June 10, 2003
• Heat cycling test /- 50 cycles (9 days)
• Air leakage no bubbles in 30 minutes
• Withstand hydro pressure test
• 4 x maximum explosion pressure or
• 1160 psi ( 8,000 kPa)

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Ultra High Pressure Seal

• The new seal conforms to the Canadian Electric
  Code section 18
• 18-108 and 18-158 requirements.
• Certifications and Compliances
• Class I, Division 1, Groups B, C, D
• UL Listed
• CSA 22.2 NUM 30.03
• CSA 22.2 NUM 14-90 M

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New Catalog Numbers
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Ultra High Pressure Seal

• Availability
• The current lead time is 4 weeks
• Competition
• The main competition will be from Conax Buffalo
  who currently doe not have a product offering in
  the 1500 PSI range. They mostly offer lower PSI
  range products (500 PSI and below).

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Conclusion

• The Ultra High Pressure Seal is a great addition
  to the Cooper Crouse-Hinds product offering. The
  addition of higher level of PSI rounds out the
  Cooper Crouse-Hinds pressure seal portfolio. The
  new product will allow Cooper Crouse-Hinds to
  offer a solution for our customers to be
  compliant with the current code requirements for
  process seals.