1 Scope…………………………………………………………………………………………………………………………………………….2 References …………………………………………………………………………………………………………………………………………….3 Definitions …………………………………………………………………………………………………………………………………………….4 General …………………………………………………………………………………………………………………………………………….5
Design Condition for Pressure Piping as per ASME B31.1, B31.3, B31.4 & B31.8 …………………………..
6
Design Criteria for Pressure Piping as per ASME B31.1, B31.3, B31.4 & B31.8 …………………………..
7 Pressure Design of Pipe and Piping Components as per ASME B31.1, B31.3, B31.4 & B31.8 8 Piping Layouts ………………………………………………………………………………………………………………..9 Piping Material Requirements ………………………………………………………………………………………………………………..10 Piping Flexibility ………………………………………………………………………………………………………………..11 Piping Support ………………………………………………………………………………………………………………..12 Pipeline construction installation and back filling procedures ……………………………………………………….13 Field Fabrication and Erection ………………………………………………………………………………………………………………..14 Pressure Testing and Lay-up Procedures ……………………………………………………………………………………15 Revision Summary: ………………………………………………………………………………………………………………..
1 Scope
1.1 This standard provides requirements for the design of Plant piping and Transportation pipelines.
1.2 This standard supplements ASME B 31.1, B 31.3, B 31.4, and B 31.8 codes and defines
additional requirements for pressure piping located within plant area and outside plant area
limits.
1.3 This standard also provides road map to other applicable piping SES.
2 References
Reference is made in this standard to the following documents. The latest issues, amendments, and
supplements to these documents shall apply unless otherwise indicated.
SABIC Engineering Standards (SES)
P01-E04 Flexibility Requirements and Stress Analysis of Above Ground and Plant Piping systems
P01-E09 Piping Layout, Spacing and Clearances
P01-E11 Dynamic Effects on Piping Systems Due to Impulse Loads
P01-E12 Dynamic Effects on Piping Systems Due to Harmonic Loads
P01-E13 Dynamic Effects on Piping Systems Due to Seismic Loads
P01-E15 Pressure Testing and Lay-up procedures
P01-E19 Utility Piping Systems, Connections to Process Equipment, Safety Shower and Eyewash
P01-E21 Fire Protection Water System
P02-S01 Piping Materials Standard Specification – Part I, Group 1
P02-S14 Piping Materials Standard Specification- Part I, Group 2
P03-S01 Piping Materials Standard Specification Part II
P04-S01 Piping Materials Standard Specification Part III
P13-C01 Pipeline construction, installation and back filling procedures
P13-C02 Field fabrication and Erection
P15-G01 Selection of Pipe – Options and Limitations for Design and Materials.
P18-G01 Design Limitations and Applications of Valves
American Petroleum Institute (API)
API 5L Specification for Line Pipe
API 570 Piping Inspection Code: Inspection, repair, alteration, and Rerating of In-service piping
systems
American Society of Mechanical Engineers (ASME)
B 16.5 Pipe Flanges and Flanged Fittings NPS 1/2 through NPS 24
B 16.47 Large diameter steel flanges, NPS 26 through NPS 60
B 31.1 Power Piping
B 31.3 Process Piping
B 31.4 Pipeline transportation system for liquid hydrocarbons and other liquids
B 31.8 Gas Transmission and distribution piping system
High Commission for Industrial Security (HCIS)
Safety and Fire protection directives for industrial facilities (SAF) – regulations.
Security Directives for industrial facilities (SEC) – regulations.
Process Industry Practices (PIP)
PNC00005 Design of ASME B31.3 Metallic Piping Systems
PNE00004 Stream Traps Guidelines
REIE686 Recommended practices for machinery installation and installation design
National Electrical Manufacturers Association (NEMA)
NEMA SM-23 Steam turbines for mechanical drive services
3 Definitions
Normal Operating Conditions: Conditions expected to occur during normal plant operation per
design. These exclude short term pressure variations or conditions due to occasional loads or
conditions resulting in plant shutdown. These include normal start-up, operation and controlled
shutdown of plants.
Critical Equipment: Equipment, which is crucial to the operation and safety of a plant. Examples of
critical equipment are: Reactors, Process Compressors, Turbines, Large capacity process Pumps, and
furnaces/reformers. Pipes and valves are not considered critical.
4 General
4.1 Piping systems shall be designed in accordance with this standard and with all applicable local
laws and regulations.
4.2 New piping systems within the scope of this standard shall be in accordance with the Code.
4.3 Alterations to the existing piping systems shall be in accordance with API 570. Changes in
service or in design conditions shall be considered alterations.
4.4 Design of piping at machinery shall be in accordance with PIP REIE686 and NEMA SM-23, as
applicable.
4.5 All piping shall be identified as Category-D, Category-M, High pressure fluid or Normal fluid
services as defined in the ASME B 31.3. „Severe cyclic conditions‟ in accordance with Code
shall also be identified by Design Engineering Company.
5 Design Condition for Pressure Piping as per ASME B31.1, B31.3, B31.4 &
B31.8
This section defines the pressures, temperatures, and forces applicable to design of piping, and states
the consideration that shall be given to various effects and their consequent loadings.
5.1 Design Pressure
5.1.1 Piping systems in accordance to ASME B31.1 or B31.3 shall be designed to withstand
the most severe combination of pressure and temperature expected during service. The most
severe condition is that which results in the greatest required component thickness and the
highest component rating. For other design consideration, the requirement specified in the Code
shall be considered.
5.1.2 Piping system designed in accordance to ASME B31.4, the design pressure of pipelines
shall not be less than the pressure at the pump dead head condition plus static head due to
elevation changes. For other design conditions such as surges, the requirement specified in the
Code shall be considered.
5.1.3 Piping system designed in accordance to ASME B31.8, the design pressure for gas
transmission shall not be less than the maximum supply pressure. For other design
consideration, the requirement specified in the Code shall be considered.
The design pressure specified in Process line list shall satisfy the condition given in
paragraph 5.1.1, 5.1.2 & 5.1.3. Also design condition of internal and external pressure of piping shall
be determined by considering various conditions stated in PIP PNC00005
5.2 Design Temperature
5.2.1 The design temperature of each component in a piping system is the temperature at
which, under the coincident pressure, the greatest thickness or highest component rating is
required.
When determining the design temperature, consideration shall be given to the extreme solar
radiation to the exposed piping.
5.2.2 The component design temperature for uninsulated & externally insulated piping
components and internally insulated/lined components shall confirm to applicable Code.
The design temperature specified in Process line list shall satisfy the condition given in paragraph 5.2.1
& 5.2.2. Also design condition of temperature of piping shall be determined by considering various
conditions stated in PIP PNC00005.
5.3 Ambient Effects, Thermal effect, Weight effect and Dynamic effects
Ambient effects, Thermal effect, Weight effect and Dynamic effects shall be taken in to account
in the design of piping.
6 Design Criteria for Pressure Piping as per ASME B31.1, B31.3, B31.4 &
B31.8
6.1 Allowable Stresses & Design Factors:
6.1.1 Plant piping designed in accordance with ASME B31.1 or ASME B31.3 shall follow the
Code allowable Stress.
6.1.2 Pipeline designed in accordance with ASME B31.4 & B31.8, the design factor shall be
as per HCIS SAF-10.
7 Pressure Design of Pipe and Piping Components as per ASME B31.1,
B31.3, B31.4 & B31.8
7.1 Wall thickness of pipe and piping components shall meet the requirement of applicable Code as
a minimum.
The wall thickness selection shall be governed by greater of minimum calculated code thickness
including corrosion allowance or the minimum structural thickness provided in SES P15-G01.
The thickness shall be rounded up to the next commercially available thickness, or to the
minimum thickness as given in this SES.
7.2 Mill tolerance or Manufacturer‟s negative tolerance:-
7.2.1 Mill tolerance shall be included with calculated minimum required thickness if pipe and
piping components are designed as per ASME B31.3 & B31.1. The negative tolerance shall be
as per respective ASTM Material specification or API 5 L specifications as applicable.
7.2.2 For transportation pipelines per ASME B31.4 & B31.8, the Mill tolerance is not required
to be included with minimum thickness since this is already incorporated in the design factor.
However, for critical piping (inside plants) where ASME B 31.3 is used, the requirement of mill
tolerance shall be additionally included with minimum thickness.
7.3 Unless otherwise specified in Process Design Package (PDP), the required corrosion allowance
of lines shall comply with PIP for process piping and P04-S01 for utility piping.
8 Piping Layouts
8.1 Plant layout, spacing and clearances shall be in accordance with SES P01- E09 and HCIS SAF
& SEC regulations.
8.2 Minimum requirements for the design of utility piping systems, connection to process equipment,
utility stations, safety showers and eyewash shall be in accordance with SES P01-E19.
8.3 Requirements for the design of fire protection water system shall be in accordance with SES
P01-E21.
8.4 Layout of Liquid and Gas transportation pipeline such as burial of pipelines, corridor design,
Rupture exposure radius (RER), sectionalizing valve spacing, basic spacing with respect to
adjacent facilities etc, shall be in accordance with HCIS SAF-10.
9 Piping Material Requirements
9.1 Unless otherwise specified in Process Design Package (PDP), the basic material selection of
pipes and components for process unit shall be in accordance with P15-G01 and P04-S01 for
utility piping.
9.2 The piping material specification shall be in accordance with SES P02 to P04 series.
9.3 Selection of pipes-options and limitation for design and material shall be in accordance with
P15-G01.
9.4 Design limitations and applications of steel Gate, Ball, Globe, and Check valves shall be in
accordance with P18-G01.
10 Piping Flexibility
10.1 The piping configuration shall be analyzed for adequate flexibility in accordance with
P01-E04.
10.2 Dynamic Effects on Piping Systems Due to Impulse Load shall be in accordance with P01-E11
10.3 Dynamic Effects on Piping Systems Due to Harmonic Loads shall be in accordance with
P01-E12
10.4 Dynamic Effects on Piping Systems Due to Seismic Loads shall be in accordance with
SES P01-E13
11 Piping Support
Design Engineering Company shall utilize their company standards for pipe supports or SES pipe
supports.
12 Pipeline construction installation and back filling procedures
12.1 Pipeline construction, installation and back filling procedures shall be in accordance with SES
P13-C01.
12.2 Hot tap and Stopple fittings shall be in accordance with SES P01-E24.
13 Field Fabrication and Erection
Field fabrication and erection of metallic piping inside plants that is engineered and designed to ASME
B31.1 and ASME B31.3 shall be in accordance with SES P13-C02.
14 Pressure Testing and Lay-up Procedures
Pressure testing and Lay-up procedure for newly constructed plant piping and pipelines shall be in
accordance with SES P01-E15.