BOP Assemblies

There are many applications that use our RON Crane Scales & Dynamometers.  Currently we have customers using our RON 2000 S-50 & RON 2125 S-50 ton dynamometers incorporated into the Blowout Preventers.  Effective 8/06, the American Petroleum Institute (API) published addendums to API Specification 7KIS 14693 and API Recommended Practice (RP) 7L for communicating specific safety standards for the design, manufacture, testing, inspection, maintenance and recommended safe practices for equipment and methods used in handling, lifting and suspending blowout preventer assemblies.By using our RON Crane Scales & Dynamometers in these assemblies ensures the users that nothing is hung up on the rig and that it is free to be lifted.  Using the RON 2000 S-50 or RON 2125 S-50 ton capacity ensured a 200% safe overload protection in this application.BOP Assemblies required for use in the oil & gas industry have gotten larger and significantly heavier, thus requiring some type of device ensuring the user’s know what is being lifted.  Common weights of BOP assemblies range from 30-45 tons in normal applications and much more in offshore or special land operations.  Use of 2 of the RON 2000 S-50 or RON 2125 S-50 ton load cells connected to the remote display built into the BOP assembly ensure users safety at all times.Installing casings/tubing slips, cutting & preparing casing/tubing for wellhead installation or the removal of well control equipment often requires personnel to work around and under these 30-50 ton BOP assemblies while suspended from above.  The danger of this process requires systems and practices to ensure that all parties involved are protected and provided with the maximum degree of safety.  Past technology used for lifting & handling BOP often fail to comply with safety requirements mandated by regulatory bodies and specified industry standards.  Consequences of these types of failures can lead to serious risks, legal and financial disasters for others.  Using a RON Crane Scale or Dynamometers ensures the safety of all involved in this field.
Blowout Preventer (BOP) Handling System
Developing innovative lifting and hoisting solutions to keep your organization compliant with safety standards and regulations
New Standards Effective August 2006, the American Petroleum Institute (API) published addendums to API Specification (Spec) 7K/ISO 14693 and API Recommended Practice (RP) 7L for communicating specific safety standards for the design, manufacture, testing, inspection, maintenance and recommended safe practices for equipment and methods used in handling, lifting and suspending blowout preventer assemblies.
 What drove the need for new standards? • Size: Blowout Preventers are much larger today Over time, Blowout Preventer (BOP) Assemblies required for use in the oil and gas industry have gotten larger and significantly heavier. Common weights of BOP assemblies typically range from 30 to 45 tons in normal applications and are often much heavier for offshore or special land operations. • The Human Factor: Personnel working under these assemblies The industry practice of installing casing/tubing slips, cutting and prepping casing/tubing for wellhead installation or the removal of other well control equipment often requires that personnel work around and under the BOP assembly while it is suspended from above. The dangerous nature of this process dictates that equipment systems, methods and practices utilized for this purpose are designed, purpose built, and applied to ensure that all parties involved are protected and provided with the maximum degree of safety. • Technology: Much of the technology used is no longer adequate Many applications of past and present technology – which include equipment, methods and practices – used for lifting and handling BOP assemblies often fail to comply with safety requirements mandated by regulatory bodies and specified by industry standards including those enacted by OSHA and addressed in API Specification 7K/ISO 14693 and API Recommended Practice 7L. In certain areas of application, the frequency and number of failures that occur is alarming. ast failures have recorded catastrophic incidents including fatalities, serious injuries, near misses and financial losses attributable to equipment and/or property damage. Typical equipment failures include wire rope, chain, wire rope slings, holding brakes and other mechanical or structural components. • Risk Management: Consequences of failures is significant The negative consequences of these load path failures can impact not only those whom are directly harmed but pose serious risks, legal and financial, for others that may have direct or indirect involvement.
Many systems in use today are not compliant with the recently implemented standards. Below are 10 basic
questions to help determine whether the BOP handling system being used is compliant. Meets Standards — Does the handling system and its specific components meet design, use and safety
requirements dictated by regulatory mandates or industry standards: OSHA 29CFR 1910, OSHA 29CFR
1926, API Spec. 7K/ISO 14693 and API RP 7L and applicable standards incorporated by reference? Mandated Markings — Are mandated markings (data plates or tags) present and visible on the handling
system and its components that specify the manufacturer’s prescribed usage, working load limits, rated
single line pull, wire rope specifications and additional operational information? Drum & Braking Assembly — Does the handling system meet mandated requirements for proper drum diameters
(Minimum D/d ratio: 18:1), positioning and line spooling, the use of anti-rotational devices such as
ratchets and pawls that are required in addition to the main brake assembly and controlled lowering devices? Wire Rope & Loose Gear Components — Are wire ropes, chain, slings or other loose gear components
used in the handling system applied in a manner not to exceed mandated safety design factors? Design & Testing — Does the handling system meet design verification, proof and load testing requirements? Load Monitoring — Does the handling system include load monitoring devices such as calibrated load
cells? Control Devices — Are control devices implemented that regulate the handling system’s ability to exceed
not more than 10% of the rated safe capacity/working load limit? Redundancy — Is the handling system designed so if a failure was to occur in a load path that the remaining
load path(s) would be capable of supporting the load in accordance with the requirement of API Spec.
7K/ISO14693 and API RP 7L? Inspections and Documentation — Are the handling system in compliance with the requirements for performing
class I and II daily inspections and annual class III and IV inspections and maintaining performance
and verification records? Training — Are the persons operating these systems equipped with the proper training, knowledge, and
experience that qualify them as competent to operate the equipment safely and effectively?
Note: These questions are general and do not address all requirements. For a complete list of requirements, consult the appropriate source document.
PBM Safe Lift Solution
PBM Safe Lift and Service Co. has designed and manufactured a purpose built Multi-Reeve BOP Handling system
that is developed to comprehensively comply with API , ISO, OSHA and other standards, procedures and practices that govern the design, manufacture, application and use of equipment dedicated for this purpose.
Our BOP Handling System assembles, aligns
with the opening and is supported by the surface
of the rig rotary table. Assembled on the rig
floor, the system consists of two multi-reeved
hoist assemblies, the components in each of
their respective load paths, and a base support
structure all of which attach and safely support
and control the load. (Model MRH334)
 The system is designed to assemble with pipe
vertically protruding through and function without
interference on the surface of rotary tables with
opening diameters of 27.5 inches or larger.
 The hydraulic power unit (HPU) features two
independently diesel powered circuits, a wireless
remote and manual overriding directional control
system and electro-proportional fluid control
valves. Each circuit is equipped with tamper free
relief valves that are set to restrict either load
path from exceeding more than ten percent of its
working load limit.
 The hoisting system in each load path is
equipped with a Lebus grooved drum assembly
and guide sheave that allows proper rope spooling
and positioning. The load path(s) are reeved
with a 2:1 mechanical advantage, have ultra
strength 94 Ton nominal wire rope, spelter sockets
for 100 percent rope termination efficiency,
Crosby blocks and a 50 Ton load cell assembly.
PBM Safe Lift Solution
This system and all components comply, meet or exceed standards, mandates and specifications for safety, design, manufacture and application promulgated in API Spec.7K/ISO 14693, API RP 7L, OSHA 29CFR 1910, OSHA 29CFR 1926 inclusive of all applicable requirements incorporated in these documents by reference.
 Each load path includes a Crosby / McKissick
single sheave load block rated 60 ton working
load limit.
 The BOP handling systems are tested on a load
stand assembly to comply with API Spec 7K/ISO
14693 and RP 7L. Load testing procedures include
documented design verification, proof and
load testing in conjunction with the appropriate
requirements for class I, II, III and IV inspections.
 In addition to a primary self setting drum brake,
each hoist assembly includes a counter balance
valve for controlled lowering and an anti –
rotational device. The anti-rotational device is a
remotely operated, spring activated self setting
ratchet and pawl assembly interfaced with the
drum flange assembly. (This requirement is
mandated by OSHA and specified by API)
 In addition to the required markings and tags on
the various components throughout the system,
each hoist assembly includes the mandated
manufacturer’s prescribed safe usage markings.
Technical SpecificationsSystem Characteristics and Technical Specifications• The PBM Model MRH334 is a purpose built BOP Handling Assembly, manufactured and designed to the
specification requirements of API Spec. 7K/ISO 14693 and applied in compliance to the recommended
practices of API RP 7L• System Design Safety Factor at Rated Capacity / Working Load Limit: (WLL): Five (5)• System Safe Load Rated Capacity: 66.8 Tons

• Safe Rated Capacity of each load path (two in system): 33.4 Tons (based on 2:1 mechanical advantage in
each load path)

• Drum Specification: Internal Gear Driven Lebus Grooved 25 inch Diameter (D/d ratio: 23)

• Wire Rope Specification: 28 mm High Performance Ultra Strength 94 Ton Single Line Minimum Breaking
Strength

• Maximum Single Line Pull for each hoist at 5:1 Safety Factor on Wire Rope: 33,400 lbs.

• Single Sheave Load Blocks (WLL): 60 Tons

• Load Cells and Loose Gear Components have WLLs of 50 Tons or greater—all exceed Safety Factor (5:1 )

• Rated Power Supply to Hoist:

• Planetary Gear Ratios: 147.2:1

• Maximum Working Torque: Input: 465 ft./lbs., Output: 68,510 ft/lbs.

• Required Torque at 33,400 lbs. WLL (Single Line Pull): Input: 245 ft/lbs., Output: 36,075 ft/lbs.

• Primary Brake Capacity: 95,402 ft/lbs. Rated at Maximum Working Output Torque

• The allowable stresses for structural components and welds are designed to exceed the requirements of
API Spec. 7K/ISO 14693